Publication:
Efecto de la melatonina aplicada localmente en el interior de alveolos post-extracción de terceros molares retenidos.Estudio piloto

Loading...
Thumbnail Image
Official URL
Full text at PDC
Publication Date
2013
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Citations
Google Scholar
Research Projects
Organizational Units
Journal Issue
Abstract
La inflamación y el dolor son problemas frecuentes que sufre el paciente y a los que debe hacer frente el profesional tras la realización de tratamientos quirúrgicos. Por otra parte la ausencia de densidad ósea suficiente es la principal limitación a la hora de realizar tratamientos implantológicos exitosos reduciendo los tiempos de espera. La exodoncia quirúrgica de los terceros molares inferiores retenidos es un modelo característico en el que se produce inflamación y dolor tempranos, seguido de un proceso de curación ósea del lecho alveolar de varios meses de duración. Varios estudios han demostrado las propiedades antiinflamatorias y analgésicas tempranas de la melatonina, así como su efecto osteogénico y osteodiferenciador, reduciendo el periodo de curación. Por este motivo se realiza el presente ensayo clínico aleatorizado, a triple ciego, unicéntrico, empleando un diseño a boca-partida en el Departamento de Medicina y Cirugía Bucofacial de la Facultad de Odontología de la Universidad Complutense de Madrid. Se estudiaron 10 pacientes con indicación de extracción quirúrgica de ambos terceros molares inferiores. Se aplicaron 3 mg de melatonina en uno de los alveolos post-extracción de forma aleatorizada por ordenador frente a un placebo. Para determinar las propiedades antiinflamatorias y analgésicas se analizaron muestras de suero sanguíneo mediante pruebas de enzimoinmunoanálisis independientes cuantificando las concentraciones de interleuquina-6 y nitrotirosina. La cuantificación de las propiedades osteogénicas se realizó mediante la medición de la densidad ósea radiográfica (número de unidades Hounsfield por área) en cortes panorámicos y seccionales obtenidos por escáner digital. Las muestras fueron codificadas (a=lado de melatonina previo; b=lado de control previo; A=lado de melatonina posterior; B=lado de control posterior), de modo que el paciente, el cirujano y el evaluador externo desconocieron el lado de aplicación de la melatonina. La concentración de interleuquina-6 tras la aplicación de melatonina fue de 361,32 ± 235,22 pg/ml, mientras que tras la aplicación del placebo fue de 262,58 ± 233,92 pg/ml. El análisis estadístico de las concentraciones de nitrotirosina no pudo realizarse ya que los valores de densidad óptica obtenidos se encontraban por debajo de la curva patrón de detectabilidad (< 0,001 nM). La densidad ósea en los cortes panorámicos a nivel del alveolo tras la aplicación de melatonina fue de 561,98±105,92 UH, mientras que tras la aplicación del placebo fue de 598,82±209,03 UH. En los cortes seccionales, la densidad ósea en la región alveolar fue de 377,42 ±125,67 UH tras la aplicación de melatonina y de 347,56±97,02 UH en el lado control. En el presente estudio no existen diferencias entre la aplicación de melatonina y placebo en cuanto a la concentración de IL-6. Tampoco se hallaron diferencias en cuanto a densidad ósea en los cortes panorámicos ni seccionales en función del tratamiento. Por tanto, no se encontraron diferencias entre la aplicación de melatonina y placebo en el alveolo post-extracción de los cordales inferiores retenidos.
Description
Unesco subjects
Keywords
Citation
1. Shepherd JP and Brickley M. Surgical removal of third molars. BMJ 1994,309:620. 2. Mercier P and Precious D. Risks and benefits of removal of impacted third molars: a critical review of the literature. Int J Oral Maxillofac Surg 1992,21:17. 3. Dhariwal DK, Goodey R and Shepherd JR. Trends in oral surgery in England and Wales. Br Dent J 2002,192:639. 4. Chukwuneke F and Onyejiaka N. Management of postoperative morbidity after third molar surgery: a review of the literature. Niger J Med 2007,16:107. 5. Schultze-Mosgau S, Schmelzeisen JC, Frolich JC et al. Use of ibuprofen and methylprednisolone for the prevention of pain and swelling after removal of impacted third molars. J Oral Maxillofac Surg 1995,53:2. 6. Cotran RS, Kumar V and Collins T. Robbins pathologic basis desease. W. B. Sanders Company, Philadelphia 1999,6:50. 7. Malkawi Z, Al-Omiri MK and Khraisat A. Risk indicators of postoperative complications following surgical extraction of lower third molars. Med Princ Prac 2011,20:321. 8. Bruce RA, Frederickson GC and Small GS. Age of patients and morbidility associated with mandibular third molar surgery. J Am Dent Assoc 1980,101:240. 9. De Boer M, Raghoebar GM, Stegenga B et al. Complications after mandibular third molar extraction. Quitessence Int 1995,26:779. 10. Capuzzi P, Montebugnoli L, Vaccaro MA. Extraction of impacted third molars, a longitudinal prospective study on factors that affect postoperative recovery. Oral Surg Oral Med Oral Pathol 1994,77:341. 11. Bello SA, Adeyemo WL, Bamgbose BO et al. Effect of age, impaction types and operative time on inflammatory tissue reactions following lower third molar surgery. Head and Face Medicine 2011,7:8. 12. Monaco G, Staffolani C, Gatto MR et al. Antibiotic therapy in impacted third molar surgery. Eur J Oral Sci 1999,107:437. 13. Blondeau F and Daniel NG. Extraction of impacted mandibular third molars: postoperative complications and their risk factors. J Can Dent Assoc 2007,73:325a. 14. Benediktsdóttir JS, Wenzel A, Petersen JK et al. Mandibular third molar removal: risk indicators for extended operation time, postoperative pain, and complications. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2004,97:438. 15. Chiapasco M, De Cicco L and Marroneh K. Side effects and complications associated with third molar surgery. Oral Surg Oral Med Oral Pathol 1993,73:412. 16. Gbotolorun OM, Arotiba GT and Ladeinde AL. Assessment of factors associated with surgical difficulty in impacted mandibular third molar extraction. J Oral Maxillofac Surg 2007,65:1977. 17. Peterson LJ, Ellis E, Hupp JR et al. Contemporary oral and maxillofacial surgery. Mosby, St Louis 1993,2:225. 18. Lopez-Carriches C, Rafael GF, Jose MM, Manuel DF. Influence of smoking upon the post operative course of lower third molar surgery. Med Oral Pathol Oral Cir Bucal 2006,11:56-60. 19. Rakprasitkul S and Pairuchives V. Mandibular third molar surgery with primary closure and tubedrain. Int J Oral Maxillofac Surg 1997,26:187. 20. Saglam AA. Effect of tube drain with primary closure technique on postoperative trismus and swelling after removal of fully impacted mandibular third molars. Quintessence Int 2003,34:143-147. 21. García GA, Sampedro FH, Rey JH et al. Trismus and pain after removal of impacted third lower third molars. J Oral Maxillofac Surg 1997,55:1223. 22. Pederson A: Inter-relationship of complaints after removal of impacted third molars. Int J Oral Maxillofac Surg 1985,14:241-247. 23. Gazivoda D, Dzopalic T, Bozic B et al. Production of proinflammatory and immunoregulatory cytokiness by inflammatory cells from periapical lesions in culture. J Oral Pathol Med 2009,38:605. 24. De Jongh RF, Vissers KC, Meert TF, Booij LHDJ, De Deyne CS, Heylen RJ.The role of interleukin-6 in nociception and pain. Anesth Analg. 2003,96:1096-1103. 25. Wang XM, Hamza M, Wu TX and Dionne RA. Up-regulation of IL-6, IL-8 and CCL2 gene expression after acute inflammation: correlation to clinical pain. Pain 2009,142(3):275-83. 26. Holzheimer RG and Steinmetz W. Local and systemic concentrations of pro- and anti- inflammatory citokines in human wounds. Eur J Med Res 2000,18:347. 27. Cruickshank AM, Fraser WD, Burns HJ et al. Response of serum interleukin-6 in patients undergoing elective surgery of varying severity. Clin Sci 1990,79:161. 28. Haefeli M and Elfering A. Pain assessment. Eur Spine J 2006,15:S17. 29. Seymour RA, Meechan JG and Blair GS. An investigation into post operative pain after third molar surgery under local analgesia. Br J Oral Maxillofac Surg 1985,23:410. 30. Wang XM, Wu TX, Hamza M, Ramsay ES, Wahl SM, Dionne RA. Rofecoxib modulates multiple gene expression pathways in a clinical model of acute inflammatory pain. Pain. 2007,128:136-147. 31. Wang XM, Wu TX, Lee YS, Dionne RA. Rofecoxib regulates the expression of genes related to the matrix metalloproteinase pathway in humans: implication for the adverse effects of cyclooxygenase-2 inhibitors. Clin. Pharmacol. Ther. 2006,79:303-315. 32. Hurst SM, Wilkinson TS, McLoughlin RM, Jones S, Horiuchi S, Yamamoto N, Rose-John S, Fuller GM, Topley N, Jones SA. IL-6 and its soluble receptor orchestrate a temporal switch in the pattern of leukocyte recruitment seen during acute inflammation.Immunity 2001,14:705-714. 33. Romano M, Sironi M, Toniatti C, Polentarutti N, Fruscella P, Ghezzi P, Faggioni R, Luini W, van Hinsbergh V, Sozzani S, Bussolino F, Poli V, Ciliberto G, Mantovani A. Role of IL-6 and its soluble receptor in induction of chemokines and leukocyte recruitment. Immunity 1997,6:315-325. 34. Suganuma MM. Discrete roles of cytokines, TNF-alpha, IL-1, IL-6 in tumor promotion and cell transformation. Int J Oncol. 2002, 20:131–136. 35. Verri JWA, Cunha TM, Parada CA, Poole S, Cunha FQ, Ferreira SH. Hypernociceptive role of cytokines and chemokines: Targets for analgesic drug development? Pharmacol Therap. 2006,112:116-138. 36. De Jong RF, Vissers KC, Meert TF et al. The role of interleukin-6 in nociception and pain. Anesth Analg 2003,96:1096. 37. Oka Y, Ibuki T, Matsumura K, Namba M, Yamazaki Y, Poole S, Tanaka Y, Kobayashi S. Interleukin-6 is a candidate molecule that transmits inflammatory information to the CNS. Neuroscience. 2007,145:530-538. 38. Fernández-Tresguerres-Hernández-Gil I, Alobera-Gracia MA, del Canto-Pingarrón M, Blanco-Jerez L. Physiological bases of bone regeneration II. The remodeling process. Med Oral Patol Oral Cir Bucal 2006,11:E151-7. 39. Korhonen R, Lahti A, Kankaanranta H and Noilanen E. Nitric oxide production and signaling in inflammation. Current Drug Targets-Inflammation&Allergy 2005,4(4):471-9. 40. Tripathi P, Tripathi P, Kashyap L and Singh V. The role of nitric oxide in inflammatory reactions. FEMS Imunol Med Microbiol 2007,51:443-52. 41. Kawachi S, Cockrell A, Laroux FS, Gray L, Granger DN, van der Heyde HC, Grisham MB. Role of inducible nitric oxide synthase in the regulation of VCAM-1 expression in gut inflammation. Am J Physiol1999,277(3 Pt 1):G572-6. 42. Hamza H, Wang XM, Wu T et al. Nitric oxide is negatively correlated to pain during acute inflammation. Mol Pain 2010,6:55. 43. Towler, P.K., Bennett, G.S., Moore, P.K., Neurogenic oedema and vasodilatation: effect of a selective neuronal NO inhibitor. Brain, S.D.Neuroreport. 1998,9(7):1513-8. 44. Alfieri A.B. y Cubeddu L.X. Nitric Oxide and NK1-Tachynin receptors in Cyclophosphamide -induced cystitis, in rats. J. Pharmacol. Exp. Therapeutics 2002,95(2):824-829. 45. Alfieri A.B., Malavé A. y Cubeddu L.X. Nitric Oxide synthase and Cyclophosphamideinduced cystitis in rats. Naunyn-Schiedemberg's Arch. Pharmacol 2001,363(3):353-357. 46. Alfieri A.B. y Cubeddu L.X. Oxido nítrico y sustancia P: papel en la cistitis inducida por ciclofosfamida. Archivos Venezolanos de Farmacología Clínica y Terapéutica 2001,20(1):44-50. 47. Whittle BJ. Nitric oxide in physiology and pathology. Histochem J 1995, 27(10):727-37. orchestrate a temporal switch in the pattern of leukocyte recruitment seen during acute inflammation.Immunity 2001,14:705-714. 48. Szabó C, Dawson VL. Role of poly(ADP-ribose) synthetase in inflammation and ischaemia reperfusion. Trends Pharmacol Sci 1998,19(7):287-98. 49. Schmidt HHHW, nau H, Wittfoht W, Gerlach J, Prescher K-E, Klein MM. Arginine is the hysiological precursor of endothelium-derived nitric oxide. Eur. J. Parmacol 1988,154:213-216. 50. Ridger VC, Greenacre SA, Handy RL, Halliwell B, Moore PK, Whiteman M, Brain SD. Effect of peroxynitrite on plasma extravasation, microvascular blood flow and nociception in the rat. Br J Pharmacol1997,122(6):1083-8. 51. Li J y Billiar TR. Nitric Oxide. IV. Determinants of nitric oxide protection and toxicity in liver. Am. J. Physiol1999,276:G1069-73. 52. Li J y Billiar TR. The role of nitric oxide in apoptosis. Semin Perinatol 2000,24(1):46-50. 53. Clancy RM, Abramson SB. Nitric oxide: a novel mediator of inflammation. Proc Soc Exp Biol Med 1995,210:93–101. 54. Mok MY, Fung PCW, Ooi C, Tse HF, Wong Y, Lam YM et al. Serum nitric oxide metabolites and disease activity in patients with systemic sclerosis. Clin Rheumatol 2008,27:315-22. 55. Linares-Fernández B and Alfieri AB. Changes in nitric oxide, prostaglandins and myeloperoxidase activity in acrolein-induced cystitis in rats. Invest Clin 2009,50:23. 56. Iasella JM, Greenwell H, Miller RL et al. Ridge preservation with freeze-dried bone allograft and a collagen membrane compared to extraction alone for implant site development: a clinical and histologic study in humans. J Periodontol 2003,74:990. 57. Bränemark P, Hansson B, Adel R, Breine U, Linström J, Hallén O et al. Osseointegrated implants in the treatment of the edentulous jaw. Experience from a 10 years period. Scand J Plast Reconstr Surg 1977,16:1-132. 58. Herrera-Briones FJ, Romero-Olid MN, Vallecillo-Capilla M. Puesta al día sobre implantes de carga inmediata. Revisión bibliográfica. Med Oral 2004,9:74-81. 59. Thomas KA, Cook S. An evaluation of variables influencing implant fixation by direct bone apposition.. J Biomed Mater Res 1985,19:875-901. 60. Yamashita-Mikami E, Tanaka M, Saturai N, Yamada K, Ohsima H, Nomura S et al. Microstructural observation with microTC and histological analysis of human alveolar bone biopsy from a planned implant site: a case report. The Open Dentistry Journal 2013,7:47-54. 61. Jaffin RA, Berman CL. The excessive loss of Branemark fixtures in type IV bone: a 5-year analysis. J Periodontol 1991,62:2-4. 62. Herrmann I, Lekholm U, Holm S, Kultje C. Evaluation of patient and implant characteristics as potential prognostic factors for oral implant failures. Int J Oral Maxillofac Implants 2005,20:220-30. 63. Malik R, Garg R, Suresh DK, Chandna S. Success or failure of a dental implant: its relationship to bone density: a case report of a failed implant. J Contemp Dent Pract 2010,11:E065-72. 64. Schnitman PA, Wöhrle PS, Rubenstein JE. Inmediate fixed interim prostheses supported by two-stage threaded implant: Methodology and results. J Oral Implantol 1990,2:96-105. 65. Molly L. Bone density and primary stability in implant therapy.Clin Oral Imp Res 2006,17(2):124-135. 66. Haghighat A, Hekmatian E, Abdinian M et al. Radiographic evaluation of bone formation and density changes after mandibular third molar extraction: a 6 month follow up. Dent Res J 2011,8:1. 67. Becker W, Hujoel PP, Becker BF and Willingham H. Osteoporosis and implant failure: an exploratory case–control study. Journal of Periodontology 2000,71:625–631. 68. Truhlar, RS, Morris, HF and Ochi S. Stability of the bone-implant complex. Results of longitudinal testing to 60 months with the Periotest device on endosseous dental implants. Annuals of Periodontology 2000,5: 42–55. 69. Trisi P, Rao W. Bone classification: clinical-histomorphometric comparison. Clin Oral Implants Res 1999,10: 1-7. 70. Turkyilmaz I, Tözüm TF and Tumer C. Bone density assessments of oral implant sites using computerized tomography. Journal of Oral Rehabilitation 2007,34,267–272. 71. Schwarz MS, Rothman SLG, Rhodes ML, Chafetz N. Computed tomography: Part I. Preoperative assessment of the mandible for endosseous implant surgery. Int J Oral Maxillofac Implants 1987,2:137–141. 72. Schwarz MS, Rothman SLG, Rhodes ML, Chafetz N. Computed tomography: Part II. Preoperative assessment of the maxilla for endosseous implant surgery. Int J Oral Maxillofac Implants. 1987,2:143-148. 73. Arenaz-Búa J, Luaces-Rey R, Sironvalle-Soliva S, Patiño-Seijas B, García-Rozado A, Martín-Sastre R, Ferreras-Granados J, Lorenzo-Franco F, Vázquez-Mahía I, López-Cedrún JL. A comparative study of plateletrich plasma, hydroxyapatite, demineralized bone matrix and autologous bone to promote bone regeneration after mandibular impacted third molar extraction. Med Oral Patol Oral Cir Bucal. 2010,15(3):e483-9. 74. Hounsfield GN. Computed medical imaging. Science 1980,210: 22–28. 75. Isoda K, Ayukawa Y, Tsukiyama Y, Sogo M, Matsushita Y, Koyano K. Relationship between the bone density estimated by cone-beam computed tomography and the primary stability of dental implants.Clin. Oral Impl. Res. 23, 2012,832–836. 76. Kalender WA, and Suess C. A new calibration phantom for quantitative computed tomography. Medical Physics 1987,14:863–866. 77. Nickoloff EL, Feldman F, and Atherton JV. Bone mineral assessment: new dual-energy CT approach. Radiology 1988,168: 223–228. 78. Hill R, Holloway L and Baldock C. A dosimetric evaluation of water equivalent phantoms for kilovoltage x-ray beams. Physics In Medicine and Biology 2005,50: N331–N344. 79. Norton RM, Gamble C. Bone classification: an objective scale of bone density using the computerized tomography scan. Clin Oral Implants Res. 2001,12:79-84. 80. Lindh C, Nilsson M, Klinge B, Petersson A. Quantitative computed tomography of trabecular bone in the mandible. Dentomaxillofac Radiol. 1996,25:146–150. 81. Munhoz EA, Bodanezi A, Junior OF and Granjeiro JM. Bone crestal height and bone density after third-third molar extraction and grafting: a long-term follow-up study. Clin Oral Invest 2011,15:123-6. 82. Kobayashi K, Shimoda S, Nakagawa Y, and Yamamoto A. Accuracy in measurement of distance using limited cone-beam computerized tomography. The International Journal of Oral & Maxillofacial Implants 2004,19: 228–231. 83. Loubele M, Maes F, Schutyser F, Marchal G, Jacobs R and Suetens P. Assessment of bone segmentation quality of cone-beam CT versus multislice spiral CT: a pilot study. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics 2006,102: 225–234. 84. Pinsky HM, Dyda S, Pinsky RW, Misch KA and Sarment DP. Accuracy of three-dimensional measurements using cone-beam CT. Dentomaxillofacial Radiology 2006,35: 410–416. 85. Loubele M, Guerrero ME, Jacobs R, Suetens P and van Steenberghe D. A comparison of jaw dimensional and quality assessments of bone characteristics with cone-beam CT, spiral tomography, and multi-slice spiral CT. The International Journal of Oral & Maxillofacial Implants 2007,22:446–454. 86. Ekestubbe A, Grondahl K, Ekholm S, Johansson PE and Grondahl HG. Low-dose tomographic techniques for dental implant planning. The International Journal Of Oral & Maxillofacial Implants 1996,11:650–659. 87. Loubele M, Jacobs R, Maes F, Schutyser F, Debaveye D, Bogaerts R, Coudyzer W, Vandermeulen D, van CJ, Marchal G and Suetens P. Radiation dose vs. image quality for lowdose CT protocols of the head for maxillofacial surgery and oral implant planning. Radiation Protection Dosimetry 2005,117: 211–216. 88. Hiasa K, Abe Y, Okazaki Y, Nogami K, Mizumachi W and Akagawa Y. Preoperative computed tomography-derived bone densities in Hounsfield Units at implant sites acquired primary stability. ISRN Dentistry 2011,678729:1-5 89. Yim JH, Ryu DM, Lee BS, Kwon YD. Analysis of digitalized panorama and cone beam computed tomographic image distortion for the diagnosis of dental implant surgery. J Craniofac Surg 2011,22: 669-73. 90. Nackaerts O, Maes F, Yan H, Souza PC, Pauwels R, and Jacobs R. Analysis of intensity variability in multislice and cone beam computed tomography. Clinical Oral Implants Research 2011, 22:873–879. 91. Naitoh M, Aimiya H, Hirukawa A, and Ariji E. Morphometric analysis of mandibular trabecular bone using cone beam computed tomography: an in vitro study. International Journal of Oral and Maxillofacial Implants 2010,25:1093- 1098. 92. Sogo, M. Evaluation of clinical bone quality on implant installation -reliability about hounsfield unit on NSCT and CBCT. Journal of Japanese Society of Oral Implantology 2009,Special Issue:119 (Abstract). 93. González-García R, Monje F. The reliability of cone-beam computed tomography to assess bone density at dental implant recipient sites: a histomorphometric analysis by micro-CT. Clin Oral Impl Res 2013,24:871–879. 94. Beer A, Gahleitner A, Holm A, Tschabitscher M and Homolka P. Correlation of ins ertion torques with bone mineral densityfrom dental quantitative CT in the mandible. Clin Oral Impl Res 2003,14:616–620. 95. Ikumi N and Tsutsumi S. Assessment of correlation between computerized tomography values of the bone and cutting torque values atimplant placement: a clinical study. InternationalJournal of Oral & Maxillofacial Implants 2005,20:253–260. 96. Merheb J, Van Assche N, Coucke W, Jacobs R, Naert I, Quirynen M. Relationship between cortical bone thickness or computerized tomography-derived bone density values and implant stability. Clin Oral Impl. Res 2010,21:612–617. 97. Ludlow JB, Davies-Ludlow LE, Brooks SL and Howerton WB. Dosimetry of 3CBCT devices for oral and maxillofacial radiology: CB Mercuray, NewTom 3G and i-CAT. Dentomaxillofac Radiol 2006,35:219-26. 98. Tan DX, Reiter RJ, Manchester LC et al. Chemical and physical properties and potential mechanisms: melatonin as a broad-spectrum antioxidant and free radical scavenger. Curr Topics Med Chem 2002,2:181. 99. Cutando A, Aneiros-Fernández J, López-Valverde A et al. A new perspective in oral health: potential importance and actions of melatonin receptors MT1, MT2, MT3, and RZR/ROR in the oral cavity. Arch Oral Biol 2011,56:944. 100. Pandi-Perumal SR, Srinivasan V, Maestroni GJM, Cardinali DP, Poeggeler B and Hardeland R. Melatonin. Nature´s most versatile biological signal? FEBS Journal 2006,273:2813–2838. 101. Laakso ML, Porkka-Heiskanen T, Aliala A et al. Correlation between salivary and serum melatonin: dependence on serum melatonin levels. J Pineal Res 1990,9:39. 102. Srinath R, Acharya AB and Thakur SL. Salivary and gingival crevicular fluid melatonin in periodontal health and disease. J Periodontol 2010,81:277. 103. Carrillo-Vico A, Calvo JR, Abreu P, Lardone PJ, Garcia- Maurino S, Reiter RJ and Guerrero JM. Evidence of melatonin synthesis by human lymphocytes and its physiological significance: possible role as intracrine, autocrine, and⁄or paracrine substance. FASEB J 2004,18:537–539. 104. Ambriz-Tututi M, Rocha-González HI, Cruz SL et al. Melatonin: a hormone that modulates pain. Life Sciences 2009,84:489. 105. Pieri C, Moroni F, Marra M et al. Melatonin is an efficient antioxidants. Arch Gerontol Geriatr 1995, 20:159. 106. Wade A, Downie S. Prolonged-release melatonin for the treatment of insomnia in patients over 55 years. Expert Opinion on Investigational Drugs 2008,17(10): 1567–1572. 107. Kostoglou-Athanassiou I, Athanassiou P, Treacher D, Wheeler M and Forsling M. Neurohypophysial hormone and melatonin secretion over the natural and suppressed menstrual cycle in premenopausal women. Clin Endocrinol 1998a,49:209–216. 108. Lopez-Burillo S, Tan DX, Rodriguez-Gallego V, Manchester LC, Mayo JC, Sainz RM and Reiter RJ. Melatonin and its derivatives cyclic 3-hydroxymelatonin, N1-acetyl-N2-formyl-5-methoxykynuramine and 6-methoxymelatonin reduce oxidative DNA damage induced by Fenton reagents. J Pineal Res 2003,34:178–184. 109. Rozov SV, Filatova EV, Orlov AA, Volkova AV, Zhloba AR, Blashko EL & Pozdeyev NV. N1-acetyl-N2-formyl-5-methoxykynuramine is a product of melatonin oxidation in rats. J Pineal Res 2003,35:245–250. 110. Carrillo-Vico A, Guerrero JM, Lardone PJ and Reiter RJ. A review of the multiple actions of melatonin on the immune system. Endocrine 2005,27:189-200. 111. Hardeland R, Poeggeler B, Niebergall R and Zelosko V. Oxidation of melatonin by carbonate radicals and chemiluminescence emitted during pyrrole ring cleavage. J Pineal Res 2003,34:17–25. 112. Hardeland R (1997) Melatonin: multiple functions in signaling and protection. In Skin Cancer and UV Radiation (Altmeyer P, Hoffmann K & Stucker M, eds) Springer 1997,x:186-98. 113. Hardeland R, Coto-Montes A and Poeggeler B. Circadian rhythms, oxidative stress, and antioxidative defense mechanisms. Chronobiol Int 2003,20:921–962. 114. Wurtman RJ and Zhdanova I. Improvement of sleep quality by melatonin. Lancet 1995,346:1491. 115. Lavie P. Melatonin: role in gating nocturnal rise in sleep propensity. J Biol Rhythms 1997,12:657–665. 116. Zisapel N. Circadian rhythm sleep disorders: pathophysiology and potential approaches to management. CNS Drugs 2001,15:311–328. 117. Scheer FA, Van Montfrans GA, Van Someren EJ, Mairuhu G and Buijs RM. Daily night-time melatonin reduces blood pressure in male patients with essential hypertension. Hypertension 2004,43:192–197. 118. Guerrero JM and Reiter RJ. Melatonin-immune system relationships. Curr Top Med Chem 2002,2:167–179. 119. Esquifino AI, Pandi-Perumal SR and Cardinali DP. Circadian organization of the immune response: a role for melatonin. Clin Appl Immunol Rev 2004,4:423-433. 120. Armstrong SM. Melatonin and circadian controlin mammals. Experientia 1989,45:932–938. 121. Ressmeyer AR, Mayo JC, Zelosko V, Sainz RM, Tan DX, Poeggeler B, Antolin I, Zsizsik BK, Reiter RJ and Hardeland R. Antioxidant properties of the melatonin metabolite N1-acetyl-5-methoxykynuramine (AMK): scavenging of free radicals and prevention of protein destruction. Redox Rep 2003,8:205–213. 122. Kelly RW, Amato F and Seamark RF. N-acetyl-5- methoxy kynurenamine, a brain metabolite of melatonin, is a potent inhibitor of prostaglandin biosynthesis. Biochem Biophys Res Commun 1984,121:372–379. 123. Reiter RJ, Tan DX, Manchester LC and Qi W. Biochemical reactivity of melatonin with reactive oxygen and nitrogen species: a review of the evidence. Cell Biochem Biophys 2001,34:237–256. 124. Mayo JC, Sainz RM, Tan DX, Hardeland R, Leon J, Rodriguez C and Reiter RJ. Anti-inflammatory actions of melatonin and its metabolites, N1-acetyl-N2-formyl-5-methoxykynuramine (AFMK) and N1-acetyl- 5- ethoxykynuramine (AMK), in macrophages. J Neuroimmunol 2005,165:139–149. 125. Barlow-Walden LR, Reiter RJ, Abe M, Pablos M, Menendez-Pelaez A, Chen LD and Poeggeler B. Melatonin stimulates brain glutathione peroxidase activity. Neurochem Int 1995,26:497–502. 126. Ferry G, Ubeaud C, Lambert PH, Bertin S, Coge F, Chomarat P, Delagrange P, Serkiz B, Bouchet JP, Truscott RJ et al. Molecular evidence that melatonin is enzymatically oxidized in a different manner than tryptophan. Investigation on both indoleamine- 2,3-dioxygenase and myeloperoxidase. Biochem J 2005,388:205–215. 127. Poeggeler B, Thuermann S, Dose A, Schoenke M, Burkhardt S and Hardeland R. Melatonin’sunique radical scavenging properties – roles of its functional substituents as revealed by a comparison with its structural analogs. J Pineal Res 2002,33:20–30. 128. Tan DX, Hardeland R, Manchester LC, Poeggeler B, Lopez-Burillo S, Mayo JC, Sainz RM and Reiter RJ. Mechanistic and comparative studies of melatonin and classic antioxidants in terms of their interactions with the ABTS cation radical. J Pineal Res 2003,34:249–259. 129. Sugden D, Davidson K, Hough KA, Teh MT. Melatonin, melatonin receptors and melanophores: a moving story. Pigment Cell Research 2004,17(5):454–460. 130. Dubocovich ML and Markowska M. Functional MT1 and MT2 melatonin receptors in mammals. Endocrine 2005,27:101–110. 131. Reppert SM, Weaver DR and Ebisawa T. Cloning and characterization of a mammalian melatonin receptor that mediates reproductive and circadian responses. Neuron 1994,13:1177–1185. 132. Reppert SM, Godson C, Mahle CD, Weaver DR, Slaugenhaupt SA and Gusella JF. Molecular characterization of a second melatonin receptor expressed in human retina and brain: the Mel1b melatonin receptor. Proc Natl Acad Sci USA 1995,92:8734– 8738. 133. Dubocovich ML, Cardinali DP, Delagrange P, Krause DN, Strosberg D, Sugden D and Yocca FD. Melatonin receptors. In The IUPHAR Compendium of Receptor Characterization and Classification. IUPHAR Media, 2000,2nd ed:271-7. 134. Yu CX, Zhu CB, Xu SF, Cao XD, Wu GCb. Selective MT melatonin receptor antagonist blocks melatonin-induced 2 antinociception in rats. Neuroscience Letters 2000b,282(3):161–164. 135. Tu Y, Sun RQ, Willis WD. Effects of intrathecal injections of melatonin analogs on capsaicin-induced secondary mechanical allodynia and hyperalgesia in rats. Pain 2004,109(3):340–350. 136. Wang T, Li SR, Dai X, Peng YL, Chen Q, Wang R. Effects of melatonin on orphanin FQ/ nociceptin-induced hyperalgesia in mice. Brain Research 2006,1085(1):43–48. 137. Ambriz-Tututi, Granados-Soto V.Oral and spinalmelatonin reduces tactile allodynia in rats via activation of MT2 and opioid receptors. Pain 2007,132(3):273–280. 138. Nosjean O, Ferro M, Coge F, Beauverger P, Henlin JM, Lefoulon F, Fauchere JL, Delagrange P, Canet E and Boutin JA. Identification of the melatonin binding site MT3 as the quinone reductase 2. J Biol Chem 200,275:31311–31317. 139. Foster CE, Bianchet MA, Talalay P, Faig M and Amzel LM. Structures of mammalian cytosolic quinonereductases. Free Radic Biol Med 2000,29:241–245. 140. Becker-Andre M, Wiesenberg I, Schaeren-Wiemers N, Andre E, Missbach M, Saurat JH, Carlberg C. Pineal gland hormone melatonin binds and activates an orphan of the nuclear receptor superfamily. Journal of Biological Chemistry 1994,269(46):28531–28534. 141. Smirnov AN. Nuclear melatonin receptors. Biochemistry (Mosc)2001,66(1):19–26. 142. Steinhilber D, BrungsM,Werz O,Wiesenberg I, Danielsson C, Kahlen JP, Nayeri S, Schrader M, Carlberg C. The nuclear receptor for melatonin represses 5-lipoxygenase gene expression in human B lymphocytes. The Journal of Biological Chemistry 1995,270(13):7037–7040. 143. Poeggeler B, Saarela S, Reiter RJ, Tan DX, Chen LD, Manchester LC and Barlow-Walden LR. Melatonin – a highly potent endogenous radical scavenger and electron donor: new aspects of the oxidation chemistry of this indole accessed in vitro. Ann N Y Acad Sci 1994,738:419–420. 144. Park HT, Kim YJ, Yoon S, Kim JB, Kim JJ. Distributional characteristics of the mRNA for retinoid Z receptor beta (RZR beta), a putative nuclear melatonin receptor, in the rat brain and spinal cord. Brain Research 1997,747(2):332–337. 145. Benitez-King G. Melatonin as a cytoskeletal modulator: implications for cell physiology and disease. J Pineal Res 2006,40:1–9. 146. Yao H, Guo L, Jiang BH, Luo J, Shi X. Oxidative stress and chromium(VI) carcinogenesis. J Environ Pathol Toxicol Oncol 2008,27:77–88. 147. Bogdan C, Röllinghoff M, Diefenbach A. Reactive oxygen and reactive nitrogen intermediates in innate and specific immunity. Curr Opin Immunol 2000,12:64–76. 148. Niethammer P, Grabher C, Look AT, Mitchison TJ. A tissue-scale gradient of hydrogen peroxide mediates rapid wound detection in zebrafish. Nature 2009,459:996–9. 149. Cristofanon S, Nuccitelli S, D’Alessio M, Dicato M, Diederich M, Ghibelli L. Oxidation-dependent maturation and survival of explanted blood monocytes via Bcl-2 up-regulation. Biochem Pharmacol 2008,76:1533–43. 150. Rosseau S, Selhorst J, Wiechmann K, Leissner K, Maus U, Mayer K, et al. Monocyte migration through the alveolar epithelial barrier: adhesion molecule mechanisms and impact of chemokines. Immunology 2000,164:427–35. 151. Kim H, Hwang JS, Woo CH, Kim EY, Kim TH, Cho KJ, et al. TNF-alpha-induced up-regulation of intercellular adhesion molecule-1 is regulated by a Rac-ROSdependent cascade in human airway epithelial cells. Exp Mol Med 2008, 40:167–75. 152. Cristofanon S, Morceau F, Scovassi AI, Dicato M, Ghibelli L, Diederich M. Oxidative, multistep activation of the noncanonical NF-kappaB pathway via disulfide Bcl-3/p50 complex. FASEB J 2009,23:45–57. 153. Carrillo-Vico A, Lardone PJ, Álvarez-Sánchez N, Rodríguez-Rodríguez A and Guerrero JM. Melatonin: buffering the immune system. Int J Mol Sci 2013,14:8638-8683. 154. Radogna F, Diederich M and Ghibelli L. Melatonin: a pleiotropic molecule regulating inflammation. Biochemical Pharmacology 2010,80:1844–1852. 155. Martinon F. Signaling by ROS drives inflammasome activation. Eur J Immunol 2010,40:616–9. 156. Cuzzocrea S, Zingarelli B, Gilad E, Hake P, Salzman AL, Szabó C. Protective effect of melatonin in carrageenan-induced models of local inflammation: relationship to its inhibitory effect on nitric oxide production and its peroxynitrite scavenging activity. Journal of Pineal Research 1997,23(2):106–116. 157. Costantino G, Cuzzocrea S, Mazzon E, Caputi AP. Protective effects of melatonin in zymosan-activated plasma-induced paw inflammation. European Journal of Pharmacology 1998,363(1):57–63. 158. Lin XJ, Mei GP, Liu J, Li YL, Zuo D, Liu SJ, Zhao TB, Lin MT. Therapeutic effects of melatonin on heatstroke-induced multiple organ dysfunction syndrome in rats. J. Pineal Res. 2011,50:436–444. 159. Chen CF, Wang D, Reiter RJ, Yeh DY. Oral melatonin attenuates lung inflammation and airway hyperreactivity induced by inhalation of aerosolized pancreatic fluid in rats. J Pineal Res 2011,50:46–53. 160. Jaworek J, Szklarczyk J, Jaworek AK, Nawrot-Porabka K, Leja-Szpak A, Bonior J, Kot M. Protective effect of melatonin on acute pancreatitis. Int J Inflam 2012,173675:1–173675:8. 161. Cuzzocrea S, Costantino G, Mazzon E, Caputi AP. Regulation of prostaglandin production in carrageenan-induced pleurisy by melatonin. Journal of Pineal Research 1999,27(12):9–14. 162. Mohan N, Sadeghi K, Reiter RJ, Meltz ML. The neurohormone melatonin inhibits cytokine, mitogen and ionizing radiation induced NF-kappa B. Biochemestry and Molecular Biology International 1995,37(6):1063–1070. 163. Konturek SJ, Zayachkivska O, Havryluk XO, Brzozowski T, Sliwowski Z, Pawlik M, Konturek PC, Cześnikiewicz-Guzik M, Gzhegotsky MR, Pawlik WW. Protective influence of melatonin against acute esophageal lesions involves prostaglandins, nitric oxide and sensory nerves. Journal of Physiology and Pharmacology 2007,58(2):361–377. 164. Raghavendra V, Agrewala JN, Kulkarni SK. Melatonin reversal of lipopolysacharidesinduced thermal and behavioral hyperalgesia in mice. European Journal of Pharmacology 2000,395(1):15–21. 165. Pozo D, Reiter RJ, Calvo JR. Inhibition of cerebellar nitric oxide synthase and cyclic GMP production melatonin via complex formation with calmodulin. Journal of Cellular Biochemistry 1997,65(3):430–442. 166. Garcia-Perganeda A, Guerrero JM, Rafii-El-Idrissi M, Paz Romero M, Pozo D, Calvo JR. Characterization of membrane melatonin receptor in mouse peritoneal macrophages: inhibition of adenylyl cyclase by a pertussis toxin-sensitive G protein. Journal of Neuroimmunology 1999,95(1–2):85–94. 167. Xia, M.Z., Liang, Y.L., Wang, H., Chen, X., Huang, Y.Y., Zhang, Z.H., Chen, Y.H., Zhang, C., Zhao, M., Xu, D.X., et al. Melatonin modulates tlr4-mediated inflammatory genes through myd88- and trif-dependent signaling pathways in lipopolysaccharide-stimulated raw264.7 cells.J. Pineal Res 2012,53:325–334. 168. Huang SH, Cao XJ, Wei W. Melatonin decreases tlr3-mediated inflammatory factor expression via inhibition of nf-kappa b activation in respiratory syncytial virus-infected raw264.7 macrophages. J Pineal Res 2008,45:93–100. 169. Hoppe JB, Frozza RL, Horn AP, Comiran RA, Bernardi A, Campos MM, Battastini AM, Salbego C. Amyloid-beta neurotoxicity in organotypic culture is attenuated by melatonin: Involvement of gsk-3beta, tau and neuroinflammation. J Pineal Res 2010,48:230–238. 170. Cutando A, Arana C, Gomez G, Escames G, Lopez A, Ferrera MJ, et al. Local application of melatonin into alveolar sockets of beagle dogs reduces tooth removal-induced oxidative stress. J Periodontol 2007,78:576–83. 171. Ahmad R, Haldar C, Gupta S. Melatonin membrane receptor type mt1 modulates cell-mediated immunity in the seasonally breeding tropical rodent funambulus pennanti. Neuroimmunomodulation 2012,19:50–59. 172. Ahmad R, Haldar C. Photoperiodic regulation of mt1 and mt2 melatonin receptor expression is spleen and thymus of a tropical rodent funambulus pennanti during reproductively active and inactive phases. Chronobiol Int 2010,27:446–462. 173. Lahiri S, Haldar C. Response of melatonin receptor mt1 in spleen of a tropical indian rodent, funambulus pennanti, to natural solar insolation and different photoperiodic conditions. Chronobiol Int 2009,26:1559–1574. 174. Cutando A, Gómez-Moreno G, Arana C, Muñoz F, Lopez-Peña M, Stephenson J, et al. Melatonin stimulates osteointegration of dental implants. J Pineal Res 2008,45:174–9. 175. Lissoni P. The pineal gland as a central regulator of cytokine network. Neuro Endocrinol Lett 1999,20:343–349. 176. Gupta S, Haldar C. Physiological crosstalk between melatonin and glucocorticoid receptor modulates t-cell mediated immune responses in a wild tropical rodent, funambulus pennanti. J Steroid Biochem Mol Biol 2013,134:23–36. 177. Drazen DL, Nelson RJ. Melatonin receptor subtype mt2 (mel 1b) and not mt1 (mel 1a) is associated with melatonin-induced enhancement of cell-mediated and humoral immunity. Neuroendocrinology 2001,74:178–184. 178. Arias J, Melean E, Valero N, Pons H, Chacin-Bonilla L, Larreal Y, Bonilla E. Effect of melatonin on lymphocyte proliferation and production of interleukin-2 (il-2) and interleukin-1 beta (il-1 beta) in mice splenocytes. Invest Clin 2003,44:41–50. 179. Wichmann MW, Zellweger R, DeMaso CM, Ayala A, Chaudry IH. Melatonin administration attenuates depressed immune functions trauma-hemorrhage. J Surg Res 1996,63:256–262. 180. Garcia-Maurino S, Gonzalez-Haba MG, Calvo JR, Rafii-El-Idrissi M, Sanchez-Margalet V, Goberna R, Guerrero JM. Melatonin enhances il-2, il-6, and ifn-gamma production by human circulating cd4+ cells: A possible nuclear receptor-mediated mechanism involving t helper type 1 lymphocytes and monocytes. J Immunol 1997,159:574–581. 181. Garcia-Maurino S, Pozo D, Carrillo-Vico A, Calvo JR, Guerrero JM. Melatonin activates th1 lymphocytes by increasing il-12 production. Life Sci 1999,65:2143–2150. 182. Lissoni P, Rovelli F, Brivio F, Fumagalli L and Brera G. A study of immunoendocrine strategies with pineal indoles and interleukin-2 to prevent radiotherapy-induced lymphocytopenia in cancer patients. In Vivo 2008,22:397–400. 183. Jimenez-Jorge S, Jimenez-Caliani AJ, Guerrero JM, Naranjo MC, Lardone PJ,Carrillo-Vico A, Osuna C, Molinero P. Melatonin synthesis and melatonin-membrane receptor (mt1) expression during rat thymus development: Role of the pineal gland. J Pineal Res 2005,39:77–83. 184. Ahmad R, Haldar C. Melatonin and androgen receptor expression interplay modulates cell-mediated immunity in tropical rodent funambulus pennanti: An in vivo and in vitro study. Scand J Immunol 2010,71:420–430. 185. Kostoglou-Athanassiou I. Therapeutic applications of melatonin. The Adv Endocrinol Metab 2013,4(1):13-24. 186. Szabó C, Wong HR, Salzman AL. Pre-exposure to heat shock inhibits peroxynitrite-induced activation of poly(ADP) ribosyltransferase and protects against peroxynitrite cytotoxicity in J774 macrophages. European Journal of Pharmacology 1996,315(2):221–226. 187. Laikin MI, Miller CH, Stott ML, Winters WD. Involvement of the pineal gland and melatonin in murine analgesia. Life Sci 1981,29:2543-2551. 188. Srinivasan V, Lauterbach EC, Ho KY, Acuña-Castroviejo D, Zakaria R and Brzezinski A. Melatonin in antinociception: its therapeutic applications. Current Neuropharmacology 2012,10:167-178. 189. Golombek DA, Escolar E, Burin LJ, Bristo-Sanchez MG, Cardinali DP. Time dependent melatonin analgesia in mice: inhibition by opiate or benzodiazepine antagonism. Eur. J. Pharmacol 1991,194(1):25-30. 190. Yu CX, Weng SM, Chen CHa. Studies on the analgesic effect and physical dependence of melatonin in mice. Chinese Journal of Drug Dependence 1999a,8:58–60. 191. Yu CX, Wu GC, Xu SF, Chen CHa. Effect of melatonin on release of endogenous opioid peptides in rat periaqueductal gray. Sheng Li Xue Bao 2000a,52:207–210. 192. Yu CX, Zhu CB, Xu SF, Cao XD, Wu GCb. Selective MT melatonin receptor antagonist blocks melatonin-induced 2 antinociception in rats. Neuroscience Letters 2000b,282(3):161–164. 193. Naguib M, Hammond DL, Schmid III PG, Baker MT, Cutkomp J, Queral L, Smith T. Pharmacological effects of intravenous melatonin: comparative studies with thiopental and propofol. British Journal of Anaesthesia 2003,90(4):504–507. 194. Le Grand SM, Patumraj S, Phansuwan-Pujito P, Srikiatkhachorn A. Melatonin inhibits cortical spreading depression-evoked trigeminal nociception. Neuroreport 2006,6(16):1709–1713. 195. Xu S, Wei W, Shen Y, Hao J, Ding C. Studies on the antiinflamatory, immnoregulatory, and analgesic actions of melatonin. Drug Development Research 1996,39(2):167–173. 196. Jeong JH, Choi KB, Yi BC, Chun CH, Sung KY, Sung JY, Gimm YM, Huh IH, Sohn UD. Effects of extremely low frequency magnetic fields on pain thresholds in mice: roles of melatonin and opioids. Journal of Autonomic Pharmacology 2000,20(4):259–264. 197. Mantovani M, Pertile R, Calixto JB, Santos AR, Rodrigues AL. Melatonin exerts an antidepressant-like effect in the tail suspension test in mice: evidence for involvement of N-methyl-D-aspartate receptors and the L-arginine-nitric oxide pathway. Neuroscience Letters 2003,343(1):1–4. 198. Esposito E, Paterniti I, Mazzon E et al. Melatonin reduces hyperalgesia associated with inflammation. J Pineal Res 2010,49:321. 199. Pang CS, Tsang SF, Yang JC. Effects of melatonin, morphine and diazepam on formalininduced nociception in mice. Life Sciences 2001,68(8):943–951. 200. RayM, Mediratta PK,Mahajan P, Sharma KK. Evaluation of the role of melatonin in formalininduced pain response in mice. Indian Journal ofMedical Sciences 2004,58(3):122–130. 201. Hernández-Pacheco A, Araiza-Saldaña CI, Granados-Soto V, Mixcoatl-Zecuatl T. Possible participation of the nitric oxide-cyclic GMP-protein kinase G-K+ channels pathway in the peripheral antinociception of melatonin. European Journal of Pharmacology 2008,596(1–3):70–6. 202. Zahn PK, Lansmann T, Berger E, Speckmann EJ, Musshoff U. Gene expression and functional characterization of melatonin receptors in the spinal cord of the rat: implications for pain modulation. J Pineal Res 2003,35(1):24–31. 203. Ying SW, Huang ZQ. Effects of pineal body and melatonin on sensitivity to pain in mice. Acta Pharmacologica Sinica 1990,11(5):411–414. 204. Gomar MD, Fernández B, Castillo JL, del Aguila CM, Acuña-Castroviejo D. Melatonin counteracts pinealectomy-dependent decreases in rat brain [3H]flunitrazepam binding through an opioid mechanism. Neurosci Lett 1993,164(1-2):149-153. 205. Yu CX, Zhu CB, Xu SF, Cao XD, Wu GC. The analgesic effects of peripheral and central administration of melatonin in rats. Eur J Pharmacol 2000,403:49-53. 206. Li SR, Wang T, Wang X, Dai X, Chen Q, Li RD. Melatonin enhances anti-nociceptive effects of δ but not μ opioid agonist in mice. Brain Res 2005,1043(1-2):132-138. 207. Laste G, De Macedo IC, Rozisky JR, Da Silva FR, Caumo W and Torres ILS. Melatonin administration reduces inflammatory pain in rats. J Pain Res 2012:5 359-62. 208. Shin DJ, Jeong CW, Lee SH, Yoon MH. Receptors involved in the anti-nociception of intrathecal melatonin in formalin test rats. Neurosci Lett 2011,494:207–210. 209. Srinivasan V, Pandi-Perumal SR, Spence DW, et al. Potential use of melatonergic drugs in analgesia: mechanisms of action. Brain Res Bull 2010,81:362–371. 210. Bilici D, Akpinar E, Kiziltunç A. Protective effect of melatonin in carrageenan-induced acute local inflammation. Pharmacol Res 2002,46:133–139. 211. Lichtenberger LM, Romero JJ, Dial EJ, Moore JE. Naproxen-PC: a GI safe and highly effective anti-inflammatory. Inflammopharmacology 2008,5:17–21. 212. Lewy AJ, Emens J, Jackman A, Yuhas K. Circadian uses of melatonin in humans. Chronobiol Int 2006,23:403–412. 213. Yoon MH, Park HC, Kim WM, et al. Evaluation for the interaction between intrathecal melatonin and clonidine or neostigmine on formalin induced nocicetion. Life Sci 2008,83:845–850. 214. Deng WG, Tang ST, Tseng HP, Wu KK. Melatonin suppresses macrophage cyclooxygenase-2 and inducible nitric oxide synthase expression by inhibiting p52 acetylation and binding. Blood 2006,108:518–524. 215. Choi EY, Jin JY, Lee JY, Choi JI, Choi IS, Kim SJ. Melatonin inhibits prevotella intermedia lipopolysaccharide-induced production of nitric oxide and interleukin-6 in murine macrophages by suppressing nf-kappab and stat1 activity. J. Pineal Res 2011,50:197–206. 216. Huang SH, Cao XJ, Wei W. Melatonin decreases tlr3-mediated inflammatory factor expression via inhibition of nf-kappa b activation in respiratory syncytial virus-infected raw264.7 macrophages. J Pineal Res 2008,45:93–100. 217. Feng Z, Zhang JT. Melatonin reduces amyloid beta-induced apoptosis in pheochromocytoma (PC12) cells. J. Pineal Res 2004,37:257– 266. 218. Feng Z, Chang Y, Cheng Y, Zhang BL, Qu ZW, Qin C, Zhang JT. Melatonin alleviates behavioral deficits associated with apoptosis and cholinergic system dysfunction in the APP 695 transgenic mouse model of Alzheimer’s disease. J. Pineal Res 2004,37:129–136. 219. Pei Z, Fung PC, Cheung RT. Melatonin reduces nitric oxide level during ischemia but not blood– brain barrier breakdown during reperfusion in a rat middle cerebral artery occlusion stroke model. J. Pineal Res 2003,34:110–118. 220. Escames G, Leon J, López LC, Acuna-Castroviejo D. Mechanisms of N-methyl-D-aspartate receptor inhibition by melatonin in the rat striatum. Journal of Neuroendocrinology 2004,16(11): 929–935. 221. Escames G, León J, Macías M, Khaldy H, Acuña-Castroviejo D. Melatonin counteracts lipopolysaccharide-induced expression and activity of mitochondrial nitric oxide synthase in rats. FASEB J 2003,17:932–934. 222. Escames G, López LC, Ortíz F, Ros E, Acuña-Castroviejo D. Age-dependent lipopolysaccharide-induced iNOS expression and multiorgan failure in rats: effects of melatonin treatment. Exp. Gerontol. 2006,41:1165–1173. 223. Escames G, López LC, Tapias V, Utrilla P, Reiter RJ, Hitos AB, León J, Rodríguez MI, Acuña-Castroviejo D. Melatonin counteracts inducible mitochondrial nitric oxide synthase-dependent mitochondrial dysfunction in skeletal muscle of septic mice. J. Pineal Res 2006,40:71–78. 224. Escames G, López LC, Ortiz F, López A, García JA, Ros E, Acuña-Castroviejo D. Attenuation of cardiac mitochondrial dysfunction by melatonin in septic mice. FEBS J 2007,274:2135–2147. 225. Hardeland R, Cardinali DP, Srinivasan V et al. Melatonin-a pleotropic, orchestrating regulator molecule. Prog Neurobiol 2011,93:350. 226. León J, Vives F, Crespo E, Camacho E, Espinosa A, Gallo MA, Escames G, Acuña-Castroviejo D. Modification of nitric oxide synthase activity and neuronal response in rat striatum by melatonin and kynurenine derivatives. J. Neuroendocrinol 1998,10:297–302. 227. León J, Macías M, Escames G, Camacho E, Khaldy H, Martín M, Espinosa A, Gallo MA, Acuña-Castroviejo D. Structure-related inhibition of calmodulin- dependent neuronal nitric-oxide synthase activity by melatonin and synthetic kynurenines. Mol. Pharmacol 2000,58:967–975. 228. León J, Escames G, Rodríguez MI, López LC, Tapias V, Entrena A, Camacho E, Carrión MD, Gallo MA, Espinosa A, Tan DX, Reiter RJ, Acuña-Castroviejo D. Inhibition of neuronal nitric oxide synthase activity by N1-acetyl-5- methoxykynuramine, a brain metabolite of melatonin. J. Neurochem 2006,98:2023– 2033. 229. Chandrasekaran A, Ponnambalam G, Kaur C. Domoic acid-induced neurotoxicity in the hippocampus of adult rats. Neurotox. Res 2004,6:105–117. 230. Escames G, Khaldy H, León J, Gonzalez L, Acuña-Castroviejo D. Changes in iNOS activity, oxidative stress and melatonin levels in hypertensive patients treated with lacidipine. J. Hypertens 2004,22:629–635. 231. Yamamoto H, Tang H. Effects of 2-amino-7-phosphonohepatanoic acid, melatonin or NG-nitro-L-arginine on cyanide or N-methyl-D-aspartate-induced neurotoxicity in rat cortical cells. Toxicology Letters 1998,94(1):13–18. 232. Acuña CD, Escames G, Carazo A et al. Melatonin, mitochondrial homeostasis and mitochondrial-related diseases.Curr Top Med Chem 2002,2:133–151. 233. Witt-Enderby PA, Radio NM, Doctor JS et al. Therapeutic treatments potentially mediated by melatonin receptors: potential clinical uses in the prevention of osteoporosis, cancer and as an adjuvant therapy. J Pineal Res 2006,41:297–305. 234. Calvo-Guirado JL, Gómez-Moreno G, Barone A, Cutando A, Alcaraz-Baños M, Chiva F et al. Melatonin plus porcine bone on discrete calcium deposit implant surfaces stimulates osteointegration in dental implants. J Pineal Res 2009,47:164–172. 235. Nakade O, Koyama H, Ariji H et al. Melatonin stimulates proliferation and type I collagen synthesis in human bone cells in vivo. J Pineal Res 1999, 27:106. 236. Roth JA, Kim BG, Lin WL et al. Melatonin promotes osteoblast differentiation and bone formation. J Biol Chem 1999, 274:22041. 237. Calvo-Guirado JL, Gómez-Moreno G, López-Marí L et al. Actions of melatonin mixed with collagenized porcine bone versus porcine only on osteointegration of dental implants. J Pineal Res 2010,49:356. 238. Jockers R, Maurice P, Boutin JA, Delagrange P. Melatonin receptors, heterodimerization, signal transduction and binding sites: what_s new? Br J Pharmacol 2008,154:1182–1195. 239. Maldonado MD, Mora-Santos M, Naji L et al. Evidence of melatonin synthesis and release by mast cells. Possible modulatory role on inflammation. Pharmacol Res 2010,62:282. 240. Cardinali DP, Ladizesky MG, Boggio V et al. Melatonin effects on bone: experimental facts and clinical perspectives. J Pineal Res 2003,34:81. 241. Koyama H, Nakade O, Takada Y et al. Melatonin at pharmacologic dosis increases bone mass by suppresing resportion trough down-regulation of the RANKL-mediated osteoclast formation and activation. J Bone Miner Res 2002,17:1219. 242. Calvo-Guirado JL, Ramírez-Fernández MP, Gómez-Moreno G, Maté-Sánchez JE, Delgado-Ruiz R, Guardia J, López-Marí L et al. Melatonin stimulates the growth of new bone around implants in the tibia of rabbits. J Pineal Res 2010,49:356-63. 243. Tan DX, Manchester LC, Reiter RJ et al. Identification of highly elevated levels of melatonin in bone marrow: its origin and significance. Biochim Biophys Acta 1999,1472:206–214. 244. Tresguerres IF, Clemente C, Blanco L et al. Effects of local melatonin application on implant osseointegration. Clin Implant Dent Relat Res 2010,In press. 245. Ramírez-Fernández MP, Vicente-Ortega V, Calvo-Guirado JL, Álvarez-Sánchez N, Delgado-Ruiz RA, Maté-Sánchez de-Val JE et al. Modelo experimental de la respuesta ósea a implantes y melatonina: estudio radiológico e histomorfométrico. X Congreso Virtual Hispanoamericano de Anatomía Patológica 2009. Nº 1909. 246. Radio NM, Doctor JS, Witt-Enderby PA. Melatonin enhances alkaline phosphatase activity in differentiating human adult mesenchymal stem cells grown in osteogenic medium via MT2 melatonin receptors and the MEK/ERK (1/2) signaling cascade. J Pineal Res 2006,40:332–342. 247. Takechi M, Tatehara S, Satomura K, Fujisawa K, Nagayama M. Effect of FGF-2 and melatonin on implant bone healing: a histomorphometric study. J Mater Sci: Mater Med 2008,19:2949–2952. 248. Bourne RS, Mills GH, Minelli C. Melatonin therapy to improve nocturnal sleep in critically ill patients: encouraging results from a small randomised controlled trial. Critical Care 2008,12(2):R52, 2008. 249. Radogna F, Diederich M and Ghibelli L. Melatonin: a pleotropic molecule regulating inflammation. Biochem Pharmacol 2010,80:1844. 250. Histing T, Anton C, Scheuer C et al. Melatonin impairs fracture healing by suppressing RANKL-mediated bone remodeling. J Surg Res 2010,In press. 251. Baeza I, Fdez-Tresguerres J, Ariznavarreta C et al. Effects of growth hormone, melatonin, oestrogens and phytoestrogens on the oxidized glutathione (GSSG)/reduced glutathione (GSH) ratio and lipid peroxidation in aged ovariectomized rats. Biogerontology 2010,11:687. 252. Ramírez-Fernández MP, Ortega W, Calvo-Guirado JL et al. Modelo experimental de la respuesta ósea a implantes y melatonina: estudio radiológico e histomorfométrico. X Congreso Virtual Hispanoamericano de Anatomía Patológica 2009. 253. Molteni R. Prospects and challenges of rendering tissue density in Hounsfield units for cone beam computed tomography. Oral Surg Oral Med Oral Pathol Oral Radiol 2013,116:105-119.