ENVEJECIMIENTO MASCULINO Y HORMONAS SEXUALES

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Existe cierta evidencia del papel que desempeña la testosterona en la aparición de signos clínicos y síntomas asociados al envejecimiento masculino; sin embargo, la importancia clínica entre la edad y el hipogonadismo es aún poco clara.
vermeulen9.jpg Autor:
Alex Vermeulen
Columnista Experto de SIIC
Artículos publicados por Alex Vermeulen
Recepción del artículo
13 de Enero, 2004
Aprobación
3 de Febrero, 2004
Primera edición
28 de Junio, 2004
Segunda edición, ampliada y corregida
7 de Junio, 2021

Resumen
El envejecimiento masculino se acompaña de deterioro progresivo de los niveles de testosterona plasmática y, además, de una serie de signos y síntomas que recuerdan la sintomatología del hipogonadismo en hombres jóvenes, por lo que parece razonable aceptar que los bajos niveles de testosterona desempeñan un papel en el envejecimiento. Este último, sin embargo, tiene origen multifactorial, con niveles descendidos de hormona de crecimiento, sedentarismo relativo, obesidad y resistencia a la insulina, condiciones que desempeñan un papel especial. De esta forma, no sorprende que la correlación entre los síntomas y los niveles de testosterona se considere débil, si bien estadísticamente significativa. El papel exacto que desempeña el hipogonadismo relativo en esta sintomatología sigue siendo, a pesar de todo, difícil de definir, y el suplemento con andrógenos solo debe ser considerado en presencia de ambas condiciones: síntomas evidentes y niveles de testosterona por debajo de lo normal. La experiencia con suplemento de andrógenos en hombres de edad avanzada es aún muy limitada y existen muy pocos estudios que incluyan investigaciones por períodos mayores a un año. En relación con los hallazgos de estas investigaciones es posible concluir, con prudencia, que el tratamiento con andrógenos en hombres de edad avanzada puede tener algún efecto beneficioso sobre la masa muscular, la grasa corporal, la libido y posiblemente en la masa ósea; con el logro de mejores resultados en presencia de niveles basales de testosterona más reducidos. De todas formas, los efectos beneficiosos en los parámetros clínicos de importancia, como caídas, fracturas, infarto de miocardio, no han sido reconocidos hasta el momento. Los riesgos a largo plazo y la proporción de beneficios permanecen poco conocidos; si bien el tratamiento parece ser seguro, se sugiere la realización de una rigurosa vigilancia de los efectos adversos, en particular de la próstata.

Palabras clave
Varones, envejecimiento, andrógenos, testosterona, hipogonadismo, deficiencia androgénica parcial en el envejec, deficiencia androgénica parcial en el envejec


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Abstract
Aging in males is accompanied on the one hand by a progressive decline of plasma testosterone levels and on the other hand by a series of signs and symptoms reminiscent of the symptomatology of hypogonadism in young males. It seems reasonable to assume a role of low testosterone levels in this symptomatology. The latter, however has a multifactorial origin, with decreased growth hormone levels , relative sedentarism, obesity and insulin resistance playing a role. Hence it is not surprising that correlations between symptoms and testosterone levels are generally weak, although often statistically significant. The exact role of the relative hypogonadism in this symptomatology remains, nevertheless still difficult to define and androgen supplementation should only be considered in the presence of both evident symptoms and subnormal testosterone levels. Experience with androgen substitution in elderly males remains still very limited and very few studies covered a period exceeding one year. From these studies it can cautiously be concluded that androgen treatment of elderly men may have some beneficial effects on muscle mass, body fat, libido and possibly bone mass, the more evident beneficial effects refer to the lower basal testosterone levels. However, beneficial effects on clinically relevant parameters such as falls, fractures heart infarction or mortality have, so far, not been reported. The long term risks and benefits ratio remains largely unknown, although so far, treatment seems to be rather safe, but careful monitoring for side effects, in particular at the level of the prostate, remains mandatory.

Key words
Males, aging, androgens, testosterone, hypogonadism, PADAM (partial androgen deficiency of the agi, PADAM (partial androgen deficiency of the agi


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Especialidades
Principal: Urología
Relacionadas: Diagnóstico por Laboratorio, Endocrinología y Metabolismo, Geriatría



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Bibliografía del artículo
  1. Vermeulen A. 1991 Androgens in the aging male. Clinical Review 24. J.Clin.Endocrinol.Metab. 73:221-224.
  2. Vermeulen A. 2001 Androgen replacement therapy in the aging male-A critical evaluation. J.Clin.Endocrinol.Metab. 86:2386-2395.
  3. Rosner W, Hryb BJ, Kahn MS et al. 1994 Sex hormone binding globulin mediates steroid signal transduction at the plasma membrane. J.Ster.Bioch.Mol.Biol. 69:481-485.
  4. Nieschlag E, Lammers U, Freischem W et al. 1982 Reproductive function in young fathers and grandfathers . J.Clin.Endocrinol.Metab. 55:676-681.
  5. Handelsman DJ 1994 Testicular dysfunction in systemic disease. Endocr.Metab.Clin. 23:839-852.
  6. Bagatell CJ, Heiman JR, Rivier JE et al. 1994 Effects of endogenous testosterone and oestradiol on sexual behavior in normal aging men. J.Clin.Endocrinol.Metab. 78:711-716.
  7. Gooren LSG. 1987 Androgen levels and sex functions in testosterone treated hypogonadal men. Arch.Sex.Beh. 16:463-467.
  8. Schiavi T.C. 1996 Androgens and sexual function in men. In: Oddens B, Vermeulen A (eds) Androgens and the aging male. Parthenon Publishing group New York pp 111-128.
  9. Kaiser FE. 1996 Impotence in the elderly. In: Morley J, Krenman P. (eds) Endocrinology and metabolism in the elderly. Blackwell - Cambridge pp 268—271.
  10. Schiavi RCV, Schreiner-Engel P, White D et al. 1988. Pituitary-gonadal function during sleep in men with hypoactive sexual desire and normal controls. Psychosom.Med. 20:304-318.
  11. Bancroft J. 1984. Androgens, sexuality and the aging male. In: Labrie F, Proulx L (eds) Endocrinology. Elsevier-Amsterdam pp 913-916.
  12. Korenman SG, Morley JE, Mooredian AD et al. 1990 Secondary hypogonadism in older men: the relation to impotence. J.Clin.Endocrinol.Metab. 71:963-969.
  13. Rhoden EL, Teloken C, Mafissoni R et al. 2002. Is there any relation between serum levels of total testosterone and the severity of erectile dysfunction Int.J. Impot. Res. 14:167-170.
  14. Vermeulen A, Goemaere S, Kaufman JM. 1999. Sex hormones, body composition and aging. The aging Male 2:8-16.
  15. Van den Beld AW, de Jong FH, Grobbee DE et al. 2000 Measure of bio-available serum testosterone and estradiol and their relationship with muscle strength, bone mineral densiy and body composition in elderly men. J.Clin.Endocrinol.Metab. 85:3276-3282.
  16. Giagulli VA, Kaufman JM, Vermeulen A. 1994 Pathogenesis of decreased androgen levels in obese men. J.Clin.Endocrinol.Metab. 79:997-1000.
  17. Roy TA, Blackman MR, Harman SM, et al. 2002 Interrelationships of serum testosterone and free testosterone with FFM and strength in aging men. Am.J.Physiol.Endocrinol.Metab. 283: E284-E294.
  18. Abassi AA, Drinka PJ, Mattson DE et al. 1993 Low circulating levels of insuline-like-growth factors and testosterone in chronically institutionalized elderly men. J.Am.Geriatr.Soc. 41:975-981.
  19. Orwoll ES, Klein RF. 1995 Osteoporosis in men. Endocr.Rev. 16:87-115.
  20. Van der Klift M, De Laet CEDH, McCloskey et al .2002 The incidence of vertebral fractures in men and women. The Rotterdam Study. J.Bone Miner. Res. 17:1051-1056.
  21. Riggs BL, Khosla S, Melton LSIII 2002. Sex steroids and the construction and conservation of the adult skeleton. Endocr.Rev. 23:279-302.
  22. Khosla S, Melton LJIII, Atkinson EJ et al. 2001. Relationship of serum sex steroid levels to longitudinal changes in bone density in young versus elderly men. J.Clin.Endocrinol.Metab. 86:3555-3561.
  23. Van Pottelbergh I, Goemaere S, Kaufman JM. 2003 Bio-available estradiol and an aromatase gene polymorphism are determinants of bone mineral density changes in men over 70 years of age. J.Clin Endocrinol.Metab. 88:2075-2081.
  24. Van Pottelbergh I, Lumbroso S, Goemaere S et al. 2001 Lack of influence of the androgen receptor gene CAG repeat polymorphism on sex steroid status and bone metabolism in elderly men. Clin.Endocrinol. 55:659-666.
  25. Alexandersen P, Haarbo J, Christiansen C. 1996. The relationship of natural androgens to coronary heart disease in males: a review. Atherosclerosis 125:1-13.
  26. Barrett-Connor E. 1996 Testosterone, HDL-cholesterol and cardiovascular disease. In: Bhasin S, Gabelnick HC, Spieler JM, Swerdloff RS, Wang C, Kelly C (eds) Pharmacology, biology and clinical applications of androgens : current status and future prospects. N.Y. Wiley-Liss pp 215-223.
  27. English KM, Mandour O, Steeds RP, Diver MJ, Jones TH, Channer KS. 2000 Men with coronary heart disease have lower levels of androgens than men with normal coronary angiograms. Eur.Heart J. 21:890-894.
  28. Hak AE, Witteman JC, De Jongh FH, Geerlings MI, Hofman A, Pols HA. 2002 Low levels of endogenous androgens increase the risk of atherosclerosis in elderly men. The Rotterdam study. J.Clin.Endocrinol.Metab. 87:3632-3639
  29. Van den Belt AW, Bots ML,Janssen JAMLL,Pols HAP, Lamberts SWJ, Grobbee DE. 2003 Endogenous hormones and carotid atherosclerosis in elderly men . Am.J.Epidemiol. 157 :25-31
  30. Yarnell JWG, Beswick AD, Sweetnam PM, Riad-Fahmy D. 1983 Endogenous sex hormones and ischaemic heart disease in men. The Caerphilly Prospective Study . Arterioscl.Thromb. 13:468-7-471.
  31. Contoreggi CS, Blackman, MR, Andres R et al. 1990 Plasma levels of estradiol, testosterone and DHEAS do not predict coronary heart disease in men. J.Androl. 11:460-470.
  32. Hämäläinen E, Adlercreutz H, Einholm C, Puska P. 1986 Relationships of serum lipoproteins and apoproteins to the binding capacity of sex hormone binding globulin (SHBG) in healthy Finnish men. Metabolism 35:535-554.
  33. Freedman DS, O'Brien, TR, Flanders WD, Di Stefano F, Barboriak JJ. 1991 Relation of serum testosterone levels to high density lipoprotein cholesterol and other characteristics in men. Arterioscl.Thromb. 11:307-315.
  34. Haffner SM, Mykkänen L, Valdez RA, Katz MS. 1993 Relationship of sex hormones to lipids and lipoproteins in non-diabetic men. J.Clin.Endocrinol.Metab. 77:1610-1615
  35. Schatzl G, Maderbacher S, Temml C, Krenn-Schinkel K, Nader A, Soregi, G, Lapin A, Hermann M, Berger P, Marberger M. 2003 Serum androgen levels in men : impact of health status and age. Urology 61:629-632.
  36. Ooi LS, Panesar NS, Masarel JR. 1996 Urinary excretion of testosterone and oestradiol in Chinese men and relationship with serum lipoprotein concentrations. Metabolism 42:279-284
  37. Miller GJ, Wheeler MJ, Price SGI, Beckles GLA, Kirkwood BR, Carson DC. 1985. Serum high density lipoprotein subclasses, testosterone and sex hormone binding globulin in Trinitadian men of African and Indian descent; Atherosclerosis 55:251-258.
  38. Gruenewald DA, Matsumoto AM 2003. Testosterone supplementation therapy for older men: potential benefits and risks. J.Am.Geriatr.Soc 51:1010-1015.
  39. Barrett-Connor E, Von Mühlen DG, Kritz-Silverstein D. 1999 Bio-available testosterone and depressed mood in older men. The Rancho Bernardo study. J.Clin.Endocrinol.Metab. 84:573- 58-77.
  40. Perry PJ, Lund BC, Arndt S et al. 2001 Bio-available testosterone as a correlate of cognition, psychological status, quality of life and sexual function in aging males. Implications for testosterone replacement therapy. Am.J. Clin.Psychiatr. 13:75-80.
  41. T'Sjoen G, Goemaere S, De Meyere M et al. 2003. Perception of males' aging symptoms, health and well-being in elderly, community-dwelling men is not related to circulating androgen levels. Psychneuroendocrinol. In press.
  42. Dunbar N, Gruman-Creisine S, Kenny A. 2001 Comparison of two health status measures and their association with testosterone levels in older men. The Aging Male 4:1-7.
  43. Wang C, Swerdloff RS, Iranmanesh A et al. 2000 Transdermal testosterone gel improves sexual function, mood, muscle strength and body composition parameters in hypogonadal men. J.Clin.Endocrinol.Metab. 86:2839-2853.
  44. Tenover JS. 1992 Effect of testosterone supplementation in the aging male. J.Clin.Endocrinol.Metab. 75:1092-1095.
  45. Snyder PJ, Pechey H, Berlin JA et al. 1999. Effect of testosterone treatment on body composition and muscle strength in men over 65 years of age. J.Clin.Endocrinol.Metab. 84:2647-2653.
  46. Kenny AM, Prestwood KM, Gruman CA et al. Effect of transdermal testosterone on body composition and muscle strength in older men with low bio-available testosterone. J.Gerontol.A.Bio.Sci. M266-M272.
  47. Ferrando AA, Sheffield-Moore M, Yeckel et al .2002 Differential anabolic effects of testosterone and amino-acid feeding in older men. J.Clin.Endocrinol.Metab. 88:358-362.
  48. Steidle C, Schwarz S, Jacoby K et al. 2003 Testosterone gel normalizes androgen levels in aging men, with improvements in body composition and sexual function. J.Clin.endocrinol.Metab. 88:2673-2681.
  49. Morley JE, Perry HM, Kaiser FC et al. Effects of testosterone replacement therapy in old hypogonadal males: a preliminary study. J.Am.Geriatr.Soc. 41:149-152.
  50. Orwoll ES, Oviatt S 1992 Transdermal testosterone supplementation in normal old men. 74th Ann.Meeting Endocrin.Soc. Abstract 1071
  51. Sih R, Morley JE, Kaiser FE et al. 1997 Testosterone replacement in older hypogonadal men: a 12 month randomized, controlled trial. J.Clin.Endocrinol.Metab. 82:1661-1667.
  52. Wu FC, von Eckhardstein A. 2003 Androgens and coronary artery disease. Endocr Rev. 24:183-217.
  53. Kunelius P, Lukkarinen O, Hannuksela ML et al. The effects of transdermal dihydrotestosterone in the aging male: a prospective, randomized, double blind study. J.Clin.Endocrinol.Metab. 87:1467-1471.
  54. Friedl KE, Hannan Cj jr, Jones RE et al. 1990 High density lipoprotein-cholesterol is not decreased if an aromatizable androgen is administered. Metabolism 39:69-74.
  55. Hajjar RR, Kaiser FE, Morley JE. 1997 Outcome of long-term testosterone replacement in older hypogonadal males: a retrospective analysis. J.Clin.Endocrinol.Metab. 82:3792-3796.
  56. Tenover JS. 1994 Androgen administration to aging men. Endocrinol.Metab.Clin. 23:877-889.
  57. Tenover SJ. 1996 Effect of androgen supplementation in the aging male. In: Oddens B, Vermeulen A (eds) Androgens in the aging male.Parthenon Publishing Group pp191-221.
  58. Bhasin S, Singh AB, Mac RP et al. 2003. Managing the risk of prostate disease during testosterone replacement therapy in older men: recommendations for a standardized monitoring. J.Andrology 24:299-311.
  59. Morales A. 1999 Andropause, androgen therapy and prostate safety. The Aging Male 2:81-86.
  60. Goldenberg SL, Bruchowsky N, Gleave ME. 1995 Intermittent androgen suppression in the treatment of prostate cancer . Urology 45:839-847.
  61. Jackson JA, Waxman J, Spiekerman H. 1989 Prostatic implications of testosterone replacement therapy. Arch.Int.Med. 149:2364-2366.
  62. Matsumoto AM, Sandblom Re, Schoene RB et al.1985 Testosterone replacement in hypogonadal men: effects on obstructive sleep apnea, respiratory drives and sleep. Clin.Endocrinol. 22:713-721.
  63. Sandblom RE, Matsumoto AM, Schoene RB et al. 1983 Obstructive long apnea induced by testosterone administration. N.Engl.J.Med 308:208-510.

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