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1.
Phytother Res ; 37(9): 4018-4041, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37165686

RESUMEN

Polycystic ovary syndrome (PCOS) is most common in women of reproductive age, giving rise to androgen excess and anovulation, leading to infertility and non-reproductive complications. We explored the ameliorating effect of naringenin in PCOS using the Sprague Dawley (SD) rat model and human granulosa cells. Letrozole-induced PCOS rats were given either naringenin (50 mg/kg/day) alone or in combination with metformin (300 mg/kg/day), followed by the estrous cycle, hormonal analysis, and glucose sensitivity test. To evaluate the effect of naringenin on granulosa cell (hGC) steroidogenesis, we treated cells with naringenin (2.5 µM) alone or in combination with metformin (1 mM) in the presence of forskolin (10 µM). To determine the steroidogenesis of CYP-17A1, -19A1, and 3ßHSD2, the protein expression levels were examined. Treatment with naringenin in the PCOS animal groups increased ovulation potential and decreased cystic follicles and levels of androgens. The expression levels of CYP-17A1, -19A1, and 3ßHSD2, were seen restored in the ovary of PCOS SD rats' model and in the human ovarian cells in response to the naringenin. We found an increased expression level of phosphorylated-AKT in the ovary and hGCs by naringenin. Naringenin improves ovulation and suppress androgens and cystic follicles, involving AKT activation.


Asunto(s)
Quiste Folicular , Metformina , Síndrome del Ovario Poliquístico , Humanos , Femenino , Ratas , Animales , Andrógenos/efectos adversos , Ratas Sprague-Dawley , Letrozol/efectos adversos , Proteínas Proto-Oncogénicas c-akt , Quiste Folicular/complicaciones , Modelos Animales de Enfermedad
2.
Steroids ; 193: 109199, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36796473

RESUMEN

From 2012 to 2013, approximately 16 New York residents reported vague, nonspecific adverse health effects which included fatigue, loss of scalp hair, and muscle aches. One patient was hospitalized for liver damage. An epidemiological investigation identified a common factor among these patients; the consumption of B-50 vitamin and multimineral supplements from the same supplier. To investigate whether these nutritional supplements might have been responsible for the adverse health effects observed, comprehensive chemical analyses of marketed lots of the supplements were performed. To determine presence of organic components and contaminants, organic extracts of samples were prepared and analyzed using gas chromatography-mass spectrometry (GC-MS), liquid chromatography-tandem mass spectrometry (LC-MS/MS), liquid chromatography high-resolution mass spectrometry (LC-HRMS), and nuclear magnetic resonance (NMR). These analyses revealed the presence of significant levels of methasterone (17ß-hydroxy-2α,17α-dimethyl-5α-androstane-3-one), an androgenic steroid and schedule III-controlled substance; dimethazine, an azine-linked dimer of methasterone; and methylstenbolone (2,17α-dimethyl-17ß-hydroxy-5α-androst-1-en-3-one), a related androgenic steroid. Methasterone and extracts of certain supplement capsules were identified as highly androgenic in luciferase assays by using an androgen receptor promoter construct. This androgenicity persisted for several days after cell exposure to the compounds. The presence of these components in implicated lots were associated with adverse health effects and the hospitalization of one patient and the presentation of symptoms of severe virilization in a child. These findings underscore the need for more rigorous oversight of the nutritional supplement industry.


Asunto(s)
Anabolizantes , Doping en los Deportes , Niño , Humanos , Cromatografía de Gases y Espectrometría de Masas/métodos , Cromatografía Liquida/métodos , Espectrometría de Masas en Tándem/métodos , Andrógenos/efectos adversos , Suplementos Dietéticos/efectos adversos , Suplementos Dietéticos/análisis
3.
Biochim Biophys Acta Mol Basis Dis ; 1867(12): 166242, 2021 12 01.
Artículo en Inglés | MEDLINE | ID: mdl-34389474

RESUMEN

Endoplasmic reticulum (ER) stress, with adaptive unfolded protein response (UPR), is a key link between obesity, insulin resistance and type 2 diabetes, all of which are often present in the most common endocrine-metabolic disorder in women of reproductive age, polycystic ovary syndrome (PCOS), which is characterized with hyperandrogenism. However, the link between excess androgen and endoplasmic reticulum (ER) stress/insulin resistance in patients with polycystic ovary syndrome (PCOS) is unknown. An unexpected role of kisspeptin was reported in the regulation of UPR pathways and its involvement in the androgen-induced ER stress in hypothalamic neuronal cells. To evaluate the relationship of kisspeptin and ER stress, we detected kisspeptin and other factors in blood plasm of PCOS patients, rat models and hypothalamic neuronal cells. We detected higher testosterone and lower kisspeptin levels in the plasma of PCOS than that in non-PCOS women. We established a PCOS rat model by dihydrotestosterone (DHT) chronic exposure, and observed significantly downregulated kisspeptin expression and activated UPR pathways in PCOS rat hypothalamus compared to that in controls. Inhibition or knockdown of kisspeptin completely mimicked the enhancing effect of DHT on UPR pathways in a hypothalamic neuronal cell line, GT1-7. Kp10, the most potent peptide of kisspeptin, effectively reversed or suppressed the activated UPR pathways induced by DHT or thapsigargin, an ER stress activator, in GT1-7 cells, as well as in the hypothalamus in PCOS rats. Similarly, kisspeptin attenuated thapsigargin-induced Ca2+ response and the DHT- induced insulin resistance in GT1-7 cells. Collectively, the present study has revealed an unexpected protective role of kisspeptin against ER stress and insulin resistance in the hypothalamus and has provided a new treatment strategy targeting hypothalamic ER stress and insulin resistance with kisspeptin as a potential therapeutic agent.


Asunto(s)
Estrés del Retículo Endoplásmico/genética , Kisspeptinas/sangre , Neuronas/metabolismo , Síndrome del Ovario Poliquístico/genética , Andrógenos/efectos adversos , Animales , Diabetes Mellitus Tipo 2/metabolismo , Diabetes Mellitus Tipo 2/patología , Modelos Animales de Enfermedad , Retículo Endoplásmico/metabolismo , Retículo Endoplásmico/patología , Femenino , Hipotálamo/metabolismo , Hipotálamo/patología , Resistencia a la Insulina/genética , Kisspeptinas/genética , Neuronas/patología , Obesidad/metabolismo , Obesidad/patología , Síndrome del Ovario Poliquístico/sangre , Síndrome del Ovario Poliquístico/patología , Ratas , Testosterona/sangre , Respuesta de Proteína Desplegada/genética
4.
G Ital Dermatol Venereol ; 155(6): 711-718, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33084268

RESUMEN

Acne fulminans (AF) is a rare and severe form of inflammatory acne presenting clinically with an abrupt outburst of painful, hemorrhagic pustules and ulceration, that may or may not be associated with systemic symptoms, such as fever, polyarthritis, and laboratory abnormalities. It typically affects male teenagers with a pre-existing acne. Although the pathogenetic mechanism has not been established yet, a role of genetic, abnormal immunologic response, drugs intake, hormonal imbalance and viral infection, as causal factors, has been identified. AF may occur as a single disease or may be associated with other disorders. Traditionally, AF has been classified, on the basis of the presence of systemic involvement, in "acne fulminans" and acne fulminans "sine fulminans," when no systemic involvement is present. Recently, four clinical variants have been proposed: acne fulminans with systemic symptoms (AF-SS), acne fulminans without systemic symptoms (AF-WOSS), isotretinoin-induced acne fulminans with systemic symptoms (IIAF-SS), isotretinoin-induced acne fulminans without systemic symptoms (IIAF-WOSS). The diagnosis of AF is usually based on clinical history and physical examination. No specific laboratory abnormalities are generally found. In selected cases, biopsy and/or radiologic imaging are helpful for a correct diagnosis. The treatment significantly differs from severe acne according to severity of clinical presentation and possible systemic involvement. Currently, systemic corticosteroids (prednisolone) and retinoids (isotretinoin) represent the first choice of treatment. Dapsone, cyclosporine A, methotrexate, azathioprine, levamisole, and biological agents such as anakinra, infliximab, adalimumab may be considered as alternative therapies in selected cases. Adjunctive topical and physical therapies may also be considered.


Asunto(s)
Acné Vulgar , Acné Vulgar/complicaciones , Acné Vulgar/diagnóstico , Acné Vulgar/fisiopatología , Acné Vulgar/terapia , Síndrome de Hiperostosis Adquirido/complicaciones , Síndrome de Hiperostosis Adquirido/diagnóstico , Adolescente , Corticoesteroides/uso terapéutico , Adulto , Andrógenos/efectos adversos , Antiinflamatorios/uso terapéutico , Artralgia/complicaciones , Terapia Combinada , Desbridamiento , Fármacos Dermatológicos/uso terapéutico , Diagnóstico Diferencial , Progresión de la Enfermedad , Femenino , Humanos , Inmunosupresores/uso terapéutico , Inflamación , Isotretinoína/efectos adversos , Isotretinoína/uso terapéutico , Láseres de Colorantes , Terapia por Luz de Baja Intensidad , Masculino , Fotoquimioterapia , Propionibacteriaceae/inmunología , Retinoides/uso terapéutico , Evaluación de Síntomas , Adulto Joven
5.
J BUON ; 25(3): 1286-1294, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32862568

RESUMEN

Androgen deprivation therapy (ADT) is the most effective systemic treatment for prostate cancer and can be succeeded either surgically or pharmaceutically. Both approaches lead to hypogonadism with a large variety of adverse events, including obesity, metabolic syndrome, osteoporosis, sarcopenia, diabetes mellitus, cardiovascular disease, gynecomastia and sexual dysfunction. In addition, undesirable effects on muscle and bone health may have a significant impact not only on the quality of life but also on life expectancy. Currently, supervised exercise seems to be the only intervention that could prevent the adverse effects of the ADT and improve quality of life. Lifestyle modification, supplementation of calcium, vitamin D and when indicated antiosteoporotic treatments improve bone health. However, patients receiving ADT must be well informed about the potential benefits as well as the risks of the treatment.


Asunto(s)
Andrógenos/efectos adversos , Andrógenos/uso terapéutico , Antineoplásicos Hormonales/efectos adversos , Antineoplásicos Hormonales/uso terapéutico , Huesos/efectos de los fármacos , Músculos/efectos de los fármacos , Neoplasias de la Próstata/tratamiento farmacológico , Densidad Ósea/efectos de los fármacos , Humanos , Masculino
6.
Nefrologia (Engl Ed) ; 40(1): 26-31, 2020.
Artículo en Inglés, Español | MEDLINE | ID: mdl-31585781

RESUMEN

The excessive chase for beauty standards and the rise of muscle dysmorphia have ultimately led to an increase in androgenic-anabolic steroids (AAS) and intramuscular injections of vitamins A, D and E (ADE) abuse, which is associated with several adverse effects and has become a public health issue. This review of literature discusses kidney injury associated with the use of AAS and ADE, highlighting the mechanisms of acute and chronic renal lesion, such as direct renal toxicity, glomerular hyperfiltration and hypercalcemia. Future perspectives regarding evaluation and early diagnosis of kidney injury in these patients are also discussed.


Asunto(s)
Anabolizantes/efectos adversos , Andrógenos/efectos adversos , Enfermedades Renales/inducido químicamente , Congéneres de la Testosterona/efectos adversos , Vitaminas/efectos adversos , Lesión Renal Aguda/inducido químicamente , Humanos , Hipercalcemia/inducido químicamente , Hipercalcemia/complicaciones , Riñón/efectos de los fármacos , Vitamina A/efectos adversos , Vitamina D/efectos adversos , Vitamina E/efectos adversos
7.
Physiol Rep ; 7(14): e14192, 2019 07.
Artículo en Inglés | MEDLINE | ID: mdl-31353833

RESUMEN

Androgen therapy provides cardiovascular benefits for hypogonadism. However, myocardial hypertrophy, fibrosis, and infarction have been reported in testosterone or androgenic anabolic steroid abuse. Therefore, better understanding of the factors leading to adverse results of androgen abuse is needed. The aim of the present study was to examine the impact of high dose of androgen treatment on cardiac biology, and whether exposure duration modulates this response. Male rats were treated with 10 mg/kg testosterone, three times a week, for either 4 or 12 weeks; vehicle injections served as controls. Four weeks of testosterone treatment induced an increase in ventricular wall thickness, indicative of concentric hypertrophy, as well as increased ejection fraction; in contrast, both parameters were blunted following 12 weeks of high-dose testosterone treatment. Cardiac myocyte contractile parameters were assessed in isolated electrically stimulated myocytes (sarcomere and intracellular calcium dynamics), and in chemically permeabilized isolated myocardium (myofilament force development and tension-cost). High-dose testosterone treatment for 4 weeks was associated with increased myocyte contractile parameters, while 12 weeks treatment induced significant depression of these parameters, mirroring the cardiac pump function results. In conclusion, chronic administration of high-dose testosterone initially induces increased cardiac function. However, this initial beneficial impact is followed by significant depression of cardiac pump function, myocyte contractility, and cardiac myofilament function. Our results indicate that chronic high-testosterone usage is of limited use and may, instead, induce significant cardiac dysfunction.


Asunto(s)
Andrógenos/farmacología , Corazón/efectos de los fármacos , Contracción Miocárdica , Testosterona/farmacología , Andrógenos/administración & dosificación , Andrógenos/efectos adversos , Animales , Calcio/metabolismo , Células Cultivadas , Corazón/fisiología , Masculino , Ratas , Ratas Sprague-Dawley , Sarcómeros/efectos de los fármacos , Sarcómeros/metabolismo , Sarcómeros/fisiología , Testosterona/administración & dosificación , Testosterona/efectos adversos
8.
PLoS One ; 14(5): e0216951, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31083690

RESUMEN

Hyperandrogenism is a risk factor of cerebrovascular diseases as androgens can alter markedly the regulation of cerebrovascular tone. We examined the combined impact of androgen excess and vitamin D deficiency (VDD), a common co-morbidity in hyperandrogenic disorders, on remodeling and testosterone-induced vascular responses of anterior cerebral arteries (ACA) in order to evaluate the interplay between androgens and VDD in the cerebral vasculature. Male and female Wistar rats were either fed with vitamin D deficient or vitamin D supplemented diet. Half of the female animals from both groups received transdermal testosterone treatment. After 8 weeks, vessel lumen, wall thickness and testosterone-induced vascular tone of isolated ACA were determined using pressure microangiometry and histological examination. Androgen receptor protein expression in the wall of cerebral arteries was examined using immunohistochemistry. In female rats only combined VDD and testosterone treatment decreased the lumen and increased the wall thickness of ACA. In males, however VDD by itself was able to decrease the lumen and increase the wall thickness. Vascular reactivity showed similar alterations: in females, testosterone constricted the ACA only after combined VDD and hyperandrogenism, whereas in males VDD resulted in increased testosterone-induced contractions in spite of decreased androgen receptor expression. In conclusion, a marked interplay between hyperandrogenism and VDD results in inward remodeling and enhanced testosterone-induced constrictions of cerebral arteries, which might compromise the cerebral circulation and thus, increase the risk of stroke in the long term. In addition, the early cerebrovascular manifestation of VDD appears to require androgen excess and thus, depends on gender.


Asunto(s)
Andrógenos/efectos adversos , Hiperandrogenismo/fisiopatología , Accidente Cerebrovascular/fisiopatología , Testosterona/efectos adversos , Deficiencia de Vitamina D/fisiopatología , Administración Oral , Andrógenos/administración & dosificación , Andrógenos/sangre , Animales , Arteria Cerebral Anterior , Dieta , Modelos Animales de Enfermedad , Femenino , Expresión Génica , Humanos , Hiperandrogenismo/sangre , Hiperandrogenismo/inducido químicamente , Hiperandrogenismo/complicaciones , Masculino , Ratas , Ratas Wistar , Receptores Androgénicos/genética , Receptores Androgénicos/metabolismo , Riesgo , Factores Sexuales , Accidente Cerebrovascular/sangre , Accidente Cerebrovascular/inducido químicamente , Accidente Cerebrovascular/etiología , Testosterona/administración & dosificación , Testosterona/sangre , Vasoconstricción/efectos de los fármacos , Vitamina D/administración & dosificación , Deficiencia de Vitamina D/sangre , Deficiencia de Vitamina D/inducido químicamente , Deficiencia de Vitamina D/complicaciones
9.
J Clin Endocrinol Metab ; 104(4): 1069-1074, 2019 04 01.
Artículo en Inglés | MEDLINE | ID: mdl-30239802

RESUMEN

CONTEXT: The prevalence of body image disorders and anabolic-androgenic steroid (AAS) use is increasing, despite the evidence of their serious adverse health effects and despite the passage of laws regulating their sales. Here we review the evolution of the dual emerging epidemics of body image disorders and AAS use, adverse health effects of AASs, and the need for an integrated health policy and regulatory response. EVIDENCE ACQUISITION: We searched for studies published prior to June 2018. Quality of evidence was low to moderate because of its observational nature; heterogeneity of eligibility criteria; variable doses; reliance on retrospective self-reported data in many studies; and variable quality of outcome ascertainment. EVIDENCE SYNTHESIS: Most AAS users are nonathlete young men, who use these substances to look lean and more muscular. Some of these men suffer from "muscle dysmorphia," a form of body dysmorphic disorder. AASs has been associated with cardiovascular disorders, psychiatric disorders, AAS-withdrawal hypogonadism, infertility, neurotoxic effects, musculoskeletal injuries, liver toxicity, and needle-borne infections. Potential adverse effects may be compounded by the use of other substances (e.g., opioids) and high-risk behaviors. Unregulated Internet sales of AASs and selective androgen receptor modulators, which are easily purchased without a prescription, are of concern because of their potential to fuel the epidemic among adolescents and the military. CONCLUSIONS: Integrated nationwide efforts are necessary to raise public awareness of this epidemic, to study long-term health effects of AASs and treatment strategies, and to reform regulations to stem the epidemics of AAS use and body image disorders.


Asunto(s)
Anabolizantes/efectos adversos , Andrógenos/efectos adversos , Trastorno Dismórfico Corporal/epidemiología , Epidemias/prevención & control , Trastornos Relacionados con Sustancias/epidemiología , Adulto , Factores de Edad , Trastorno Dismórfico Corporal/complicaciones , Trastorno Dismórfico Corporal/psicología , Política de Salud , Humanos , Masculino , Prevalencia , Trastornos Relacionados con Sustancias/prevención & control , Trastornos Relacionados con Sustancias/psicología , Estados Unidos , Adulto Joven
10.
Food Funct ; 9(4): 2136-2144, 2018 Apr 25.
Artículo en Inglés | MEDLINE | ID: mdl-29629442

RESUMEN

Essential oils (EOs) of culinary herbs and spices are consumed on a daily basis. They are multicomponent mixtures of compounds with already demonstrated biological activities. Taking into account regular dietary intake and the chemical composition of EOs, they may be considered as candidates for endocrine-disrupting entities. Therefore, we examined the effects of 31 EOs of culinary herbs and spices on transcriptional activities of glucocorticoid receptor (GR), androgen receptor (AR) and vitamin D receptor (VDR). Using reporter gene assays in stably transfected cell lines, weak anti-androgen and anti-glucocorticoid activity was observed for EO of vanilla and nutmeg, respectively. Moderate augmentation of calcitriol-dependent VDR activity was caused by EOs of ginger, thyme, coriander and lemongrass. Mixed anti-glucocorticoid and VDR-stimulatory activities were displayed by EOs of turmeric, oregano, dill, caraway, verveine and spearmint. The remaining 19 EOs were inactive against all receptors under investigation. Analyses of GR, AR and VDR target genes by means of RT-PCR confirmed the VDR-stimulatory effects, but could not confirm the anti-glucocorticoid and anti-androgen effects of EOs. In conclusion, although we observed minor effects of several EOs on transcriptional activities of GR, AR and VDR, the toxicological significance of these effects is very low. Hence, 31 EOs of culinary herbs and spices may be considered safe, in terms of endocrine disruption involving receptors GR, AR and VDR.


Asunto(s)
Disruptores Endocrinos/efectos adversos , Aceites Volátiles/efectos adversos , Plantas Comestibles/química , Receptores Androgénicos/metabolismo , Receptores de Calcitriol/metabolismo , Receptores de Glucocorticoides/metabolismo , Especias , Antagonistas de Andrógenos/efectos adversos , Andrógenos/efectos adversos , Línea Celular Tumoral , Supervivencia Celular/efectos de los fármacos , República Checa , Regulación de la Expresión Génica/efectos de los fármacos , Genes Reporteros/efectos de los fármacos , Humanos , Ligandos , Plantas Medicinales/química , Receptores Androgénicos/química , Receptores de Calcitriol/agonistas , Receptores de Calcitriol/antagonistas & inhibidores , Receptores de Calcitriol/genética , Receptores de Glucocorticoides/agonistas , Receptores de Glucocorticoides/antagonistas & inhibidores , Receptores de Glucocorticoides/genética , Proteínas Recombinantes/química , Proteínas Recombinantes/metabolismo , Reproducibilidad de los Resultados , Activación Transcripcional/efectos de los fármacos
11.
Sex Med Rev ; 6(1): 106-113, 2018 01.
Artículo en Inglés | MEDLINE | ID: mdl-29174957

RESUMEN

INTRODUCTION: Although testosterone therapy (TTh) is an effective treatment for hypogonadism, recent concerns regarding its safety have been raised. In 2015, the US Food and Drug Administration issued a warning about potential cardiovascular risks resulting from TTh. Fertility preservation is another reason to search for viable alternative therapies to conventional TTh, and in this review we evaluate the literature examining these alternatives. AIMS: To review the role and limitations of non-testosterone treatments for hypogonadism. METHODS: A literature search was conducted using PubMed to identify relevant studies examining medical and non-medical alternatives to TTh. Search terms included hypogonadism, testosterone replacement therapy, testosterone therapy, testosterone replacement alternatives, diet and exercise and testosterone, varicocele repair and testosterone, stress reduction and testosterone, and sleep apnea and testosterone. MAIN OUTCOME MEASURES: Review of peer-reviewed literature. RESULTS: Medical therapies examined include human chorionic gonadotropins, aromatase inhibitors, and selective estrogen receptor modulators. Non-drug therapies that are reviewed include lifestyle modifications including diet and exercise, improvements in sleep, decreasing stress, and varicocele repair. The high prevalence of obesity and metabolic syndrome in the United States suggests that disease modification could represent a viable treatment approach for affected men with hypogonadism. CONCLUSIONS: These alternatives to TTh can increase testosterone levels and should be considered before TTh. Lo EM, Rodriguez KM, Pastuszak AW, Khera M. Alternatives to Testosterone Therapy: A Review. Sex Med Rev 2018;6:106-113.


Asunto(s)
Andrógenos/efectos adversos , Inhibidores de la Aromatasa/uso terapéutico , Enfermedades Cardiovasculares/inducido químicamente , Terapia de Reemplazo de Hormonas/efectos adversos , Hipogonadismo/tratamiento farmacológico , Moduladores Selectivos de los Receptores de Estrógeno/uso terapéutico , Testosterona/efectos adversos , Andrógenos/uso terapéutico , Enfermedades Cardiovasculares/fisiopatología , Frecuencia Cardíaca/efectos de los fármacos , Humanos , Masculino , Testosterona/uso terapéutico , Resultado del Tratamiento
12.
Adv Exp Med Biol ; 1034: 25-28, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-29256124

RESUMEN

Due in part to aggressive marketing, the prevalence of exogenous androgen use has increased to disturbing levels. Prescribing practitioners are often unaware of the severity of the anti-fertility effects. Exogenous androgens should only be prescribed if hypogonadism has been established by appropriate investigation, and preferably the patient does not intend to father a child. There are alternative medications, or combinations of medications, that can be used if hypogonadism is present and fertility is desired.It is somewhat counterintuitive that testosterone treatment will decrease or abolish fertility. Exogenous testosterone inhibits spermatogenesis by removing the feedback response to low testosterone at the hypothalamus and pituitary. This results in reduced synthesis and secretion of gonadotropins required to stimulate endogenous testosterone production and to support spermatogenesis. It is important to realize that the normal testicular levels of testosterone are approximately 100 times the concentration in circulation. These high levels are required locally to support spermatogenesis. So even with circulating androgen levels within the normal range, spermatogenesis fails due to insufficient gonadotropin and local testosterone support. Androgenic herbal supplements and illicit use of anabolic steroids have contributed to this serious challenge in the treatment of infertile men. Most men will recover normal spermatogenesis after cessation of exogenous testosterone treatment, but this requires 6 months or more in most men. In rare cases fertility is permanently impaired.


Asunto(s)
Andrógenos/efectos adversos , Andrógenos/uso terapéutico , Hipogonadismo , Reproducción/efectos de los fármacos , Espermatogénesis/efectos de los fármacos , Gonadotropinas/metabolismo , Humanos , Hipogonadismo/tratamiento farmacológico , Hipogonadismo/metabolismo , Hipogonadismo/patología , Hipotálamo/metabolismo , Hipotálamo/patología , Masculino , Hipófisis/metabolismo , Hipófisis/patología , Testosterona/metabolismo
13.
JAMA Intern Med ; 177(4): 491-499, 2017 04 01.
Artículo en Inglés | MEDLINE | ID: mdl-28241244

RESUMEN

Importance: Controversy exists regarding the safety of testosterone replacement therapy (TRT) following recent reports of an increased risk of adverse cardiovascular events. Objective: To investigate the association between TRT and cardiovascular outcomes in men with androgen deficiency. Design, Setting, and Participants: A retrospective cohort study was conducted within an integrated health care delivery system. Men at least 40 years old with evidence of androgen deficiency either by a coded diagnosis and/or a morning serum total testosterone level of less than 300 ng/dL were included. The eligibility window was January 1, 1999, to December 31, 2010, with follow-up through December 31, 2012. Exposures: Any prescribed TRT given by injection, orally, or topically. Main Outcomes and Measures: The primary outcome was a composite of cardiovascular end points that included acute myocardial infarction (AMI), coronary revascularization, unstable angina, stroke, transient ischemic attack (TIA), and sudden cardiac death (SCD). Multivariable Cox proportional hazards models were used to investigate the association between TRT and cardiovascular outcomes. An inverse probability of treatment weight, propensity score methodology, was used to balance baseline characteristics. Results: The cohorts consisted of 8808 men (19.8%) ever dispensed testosterone (ever-TRT) (mean age, 58.4 years; 1.4% with prior cardiovascular events) and 35 527 men (80.2%) never dispensed testosterone (never-TRT) (mean age, 59.8 years; 2.0% with prior cardiovascular events). Median follow was 3.2 years (interquartile range [IQR], 1.7-6.6 years) in the never-TRT group vs 4.2 (IQR, 2.1-7.8) years in the ever-TRT group. The rates of the composite cardiovascular end point were 23.9 vs 16.9 per 1000 person-years in the never-TRT and ever-TRT groups, respectively. The adjusted hazard ratio (HR) for the composite cardiovascular end point in the ever-TRT group was 0.67 (95% CI, 0.62-0.73. Similar results were seen when the outcome was restricted to combined stroke events (stroke and TIA) (HR, 0.72; 95% CI, 0.62-0.84) and combined cardiac events (AMI, SCD, unstable angina, revascularization procedures) (HR, 0.66; 95% CI, 0.60-0.72). Conclusions and Relevance: Among men with androgen deficiency, dispensed testosterone prescriptions were associated with a lower risk of cardiovascular outcomes over a median follow-up of 3.4 years.


Asunto(s)
Enfermedades Cardiovasculares , Muerte Súbita Cardíaca/epidemiología , Testosterona , Andrógenos/administración & dosificación , Andrógenos/efectos adversos , Andrógenos/sangre , Andrógenos/deficiencia , California/epidemiología , Enfermedades Cardiovasculares/clasificación , Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/mortalidad , Vías de Administración de Medicamentos , Monitoreo de Drogas , Terapia de Reemplazo de Hormonas/métodos , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Medición de Riesgo , Estadística como Asunto , Testosterona/administración & dosificación , Testosterona/efectos adversos , Testosterona/sangre , Testosterona/deficiencia
14.
Prostate ; 77(7): 708-717, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-28168722

RESUMEN

BACKGROUND: Complications after a thulium laser resection of the prostate (TmLRP) are related to re-epithelialization of the prostatic urethra. Since prostate growth and development are induced by androgen, the aim of this study was to determine the role and explore the mechanism of androgen in wound healing of the prostatic urethra. METHODS: Beagles that received TmLRPs were randomly distributed into a castration group, a testosterone undecanoate (TU) group, and a control group. The prostate wound was assessed once a week using a cystoscope. Histological analysis was then carried out to study the re-epithelialization of the prostatic urethra in each group. The inflammatory response in the wound tissue and urine was also investigated. RESULTS: The healing of the prostatic urethra after a TmLRP was more rapid in the castration group and slower in the TU group than that in the control group. Castration accelerated re-epithelialization by promoting basal cell proliferation in the wound surface and beneath the wound and by accelerating the differentiation of basal cells into urothelial cells. Castration reduced the duration of the inflammatory phase and induced the conversion of M1 macrophages to M2 macrophages, thus accelerating the maturation of the wound. By contrast, androgen supplementation enhanced the inflammatory response and prolonged the inflammatory phase. Moreover, the anti-inflammatory phase was delayed and weakened. CONCLUSION: Androgen deprivation promotes re-epithelialization of the wound, regulates the inflammatory response, and accelerates wound healing of the prostatic urethra after a TmLRP. Prostate 77:708-717, 2017. © 2017 Wiley Periodicals, Inc.


Asunto(s)
Andrógenos , Complicaciones Intraoperatorias , Próstata , Testosterona/análogos & derivados , Resección Transuretral de la Próstata/efectos adversos , Uretra , Andrógenos/administración & dosificación , Andrógenos/efectos adversos , Andrógenos/metabolismo , Animales , Modelos Animales de Enfermedad , Perros , Complicaciones Intraoperatorias/metabolismo , Complicaciones Intraoperatorias/fisiopatología , Complicaciones Intraoperatorias/terapia , Macrófagos/patología , Macrófagos/fisiología , Masculino , Próstata/patología , Próstata/cirugía , Repitelización/efectos de los fármacos , Repitelización/fisiología , Estadística como Asunto , Testosterona/administración & dosificación , Testosterona/efectos adversos , Testosterona/metabolismo , Tulio/farmacología , Resección Transuretral de la Próstata/métodos , Uretra/lesiones , Uretra/patología , Cicatrización de Heridas/efectos de los fármacos , Cicatrización de Heridas/fisiología
15.
Zhonghua Nan Ke Xue ; 23(5): 455-458, 2017 May.
Artículo en Chino | MEDLINE | ID: mdl-29717839

RESUMEN

OBJECTIVE: To investigate the clinical effects of oral Testosterone Undecanoate Capsules (TUC) combined with Qilin Pills (QLP) on late-onset hypogonadism (LOH) in men. METHODS: Sixty-three LOH patients meeting the inclusion criteria were randomly divided into a control group (aged ï¼»48.4 ± 6.2ï¼½ yr, n = 32) and an experimental group (aged ï¼»47.2 ± 5.6ï¼½ yr, n = 31) to be treated with oral TUC (80 mg, qd) and TUC + QLP (6g, tid), respectively, both for 3 months. Comparisons were made between the two groups of patients in the IIEF-5 scores, total testosterone (TT) levels, and scores in the Aging Males' Symptoms (AMS) scale before and after treatment. RESULTS: After treatment, the patients of the experimental group, as compared with the controls, showed a significantly increased IIEF-5 score (21.7 ± 5.8 vs 15.9 ± 4.7, P <0.05) and TT level (ï¼»16.7 ± 2.2ï¼½ vs ï¼»13.1 ± 2.8ï¼½ nmol/L, P <0.05), but a decreased AMS score (20.7 ± 5.7 vs 31.3±6.5, P <0.05). CONCLUSIONS: TUC combined with Qilin Pills has a better effect and a lower rate of adverse reactions than TUC used alone in the treatment of late-onset hypogonadism in males.


Asunto(s)
Andrógenos/administración & dosificación , Medicamentos Herbarios Chinos/administración & dosificación , Hipogonadismo/tratamiento farmacológico , Testosterona/análogos & derivados , Andrógenos/efectos adversos , Cápsulas , Quimioterapia Combinada/efectos adversos , Medicamentos Herbarios Chinos/efectos adversos , Humanos , Hipogonadismo/sangre , Masculino , Persona de Mediana Edad , Testosterona/administración & dosificación , Testosterona/efectos adversos , Testosterona/sangre
16.
Andrologia ; 48(9): 923-932, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26840772

RESUMEN

The flower buds of Syzygium aromaticum (clove) have been used for the treatment of male sexual disorders in indigenous medicines of Indian subcontinent. Therefore to evaluate the efficacy of Syzygium aromaticum on the male reproductive health, chronic oral exposure of aqueous extract of flower buds of Syzygium in three doses (15 mg, 30 mg and 60 mg kg-1 BW) were studied for a single spermatogenic cycle (35 days) in Parkes (P) strain mice. Lower dose (15 mg) of Syzygium aromaticum flower buds increased serum testosterone level and testicular hydroxysteroid dehydrogenase (HSD) activities and improved sperm motility, sperm morphology, secretory activity of epididymis and seminal vesicle, and number of litters per female. On the other hand, higher doses (30 and 60 mg) of the treatment adversely affected above parameters. Further, higher doses of the extract also had adverse effects on daily sperm production, 1C cell population and on histology of testis. In conclusion, Syzygium aromaticum flower buds extract exhibits biphasic effect on reproductive physiology of male mice. Lower dose of Syzygium aromaticum flower bud extract is androgenic in nature and may have a viable future as an indigenous sexual rejuvenator, while higher doses adversely affected functional physiology of reproductive organs.


Asunto(s)
Reproducción/efectos de los fármacos , Syzygium , Andrógenos/administración & dosificación , Andrógenos/efectos adversos , Andrógenos/farmacología , Animales , Relación Dosis-Respuesta a Droga , Femenino , Fertilidad/efectos de los fármacos , Fertilidad/fisiología , Flores , Genitales Masculinos/efectos de los fármacos , Genitales Masculinos/metabolismo , Genitales Masculinos/patología , Humanos , India , Masculino , Medicina Tradicional , Ratones , Extractos Vegetales/administración & dosificación , Extractos Vegetales/efectos adversos , Extractos Vegetales/farmacología , Embarazo , Reproducción/fisiología , Espermatogénesis/efectos de los fármacos , Testosterona/sangre
17.
Cell Physiol Biochem ; 37(3): 1134-46, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26414164

RESUMEN

BACKGROUND/AIMS: Advanced glycation end products (AGEs) have been related to a wide range of liver disorders including hyperandrogenic states such as the Polycystic Ovary Syndrome (PCOS). The aim of the present study is to evaluate the potential impact of dietary glycotoxins exposure and androgen excess on hepatic histology and biochemistry in an androgenized female rat model. METHODS: The study population consisted of 80 female Wistar rats, divided in 3 groups, a group of prepubertal (Group A, n=30) and adult rats (Group B, n=20) that were androgenized via subcutaneous implantation of dihydrotestosterone-containing pellets as well as a group of adult non-androgenized rodents (Group C, n=30). All groups were randomly assigned either to a high-AGE or low-AGE diet for 3 months. RESULTS: Rats fed with a high-AGE diet exhibited significantly elevated levels of gamma-glutamyl transferase (x03B3;GT) (p≤0.0002) and indices of AGE immunostaining in liver tissue (p<0.01) when compared to the respective low-AGE group, while aspartate aminotransferase (AST) levels were affected only in non-androgenized animals (p=0.0002). Androgenization per se constitutes an aggravating factor as demonstrated by the elevated x03B3;GT levels in adult androgenized animals compared to non-androgenized, independent of diet content (p=0.0002) and by the elevated AST and alanine aminotransferase (ALT) levels in low-AGE subgroups (adult androgenized vs. non-androgenized, p=0.0002) followed by increased immunohistochemical AGE deposition in hepatocytes of the latter categories (p=0.0007). CONCLUSION: The present study suggests that androgens and glycotoxins may contribute synergistically to distort hepatic physiology and function as observed in hyperandrogenic conditions.


Asunto(s)
Andrógenos/efectos adversos , Productos Finales de Glicación Avanzada/efectos adversos , Hígado/efectos de los fármacos , Síndrome del Ovario Poliquístico/inducido químicamente , gamma-Glutamiltransferasa/metabolismo , Andrógenos/farmacología , Animales , Suplementos Dietéticos , Modelos Animales de Enfermedad , Femenino , Productos Finales de Glicación Avanzada/farmacología , Humanos , Hígado/metabolismo , Síndrome del Ovario Poliquístico/enzimología , Ratas , Ratas Wistar
18.
Cochrane Database Syst Rev ; (10): CD008887, 2014 Oct 06.
Artículo en Inglés | MEDLINE | ID: mdl-25284341

RESUMEN

BACKGROUND: Hip fracture occurs predominantly in older people, many of whom are frail and undernourished. After hip fracture surgery and rehabilitation, most patients experience a decline in mobility and function. Anabolic steroids, the synthetic derivatives of the male hormone testosterone, have been used in combination with exercise to improve muscle mass and strength in athletes. They may have similar effects in older people who are recovering from hip fracture. OBJECTIVES: To examine the effects (primarily in terms of functional outcome and adverse events) of anabolic steroids after surgical treatment of hip fracture in older people. SEARCH METHODS: We searched the Cochrane Bone, Joint and Muscle Trauma Group Specialised Register (10 September 2013), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library, 2013 Issue 8), MEDLINE (1946 to August Week 4 2013), EMBASE (1974 to 2013 Week 36), trial registers, conference proceedings, and reference lists of relevant articles. The search was run in September 2013. SELECTION CRITERIA: Randomised controlled trials of anabolic steroids given after hip fracture surgery, in inpatient or outpatient settings, to improve physical functioning in older patients with hip fracture. DATA COLLECTION AND ANALYSIS: Two review authors independently selected trials (based on predefined inclusion criteria), extracted data and assessed each study's risk of bias. A third review author moderated disagreements. Only very limited pooling of data was possible. The primary outcomes were function (for example, independence in mobility and activities of daily living) and adverse events, including mortality. MAIN RESULTS: We screened 1290 records and found only three trials involving 154 female participants, all of whom were aged above 65 years and had had hip fracture surgery. All studies had methodological shortcomings that placed them at high or unclear risk of bias. Because of this high risk of bias, imprecise results and likelihood of publication bias, we judged the quality of the evidence for all primary outcomes to be very low.These trials tested two comparisons. One trial had three groups and contributed data to both comparisons. None of the trials reported on patient acceptability of the intervention.Two very different trials compared anabolic steroid versus control (no anabolic steroid or placebo). One trial compared anabolic steroid injections (given weekly until discharge from hospital or four weeks, whichever came first) versus placebo injections in 29 "frail elderly females". This found very low quality evidence of little difference between the two groups in the numbers discharged to a higher level of care or dead (one person in the control group died) (8/15 versus 10/14; risk ratio (RR) 0.75, 95% confidence interval (CI) 0.42 to 1.33; P = 0.32), time to independent mobilisation or individual adverse events. The second trial compared anabolic steroid injections (every three weeks for six months) and daily protein supplementation versus daily protein supplementation alone in 40 "lean elderly women" who were followed up for one year after surgery. This trial provided very low quality evidence that anabolic steroid may result in less dependency, assessed in terms of being either dependent in at least two functions or dead (one person in the control group died) at six and 12 months, but the result was also compatible with no difference or an increase in dependency (dependent in at least two levels of function or dead at 12 months: 1/17 versus 5/19; RR 0.22, 95% CI 0.03 to 1.73; P = 0.15). The trial found no evidence of between-group differences in individual adverse events.Two trials compared anabolic steroids combined with another nutritional intervention ('steroid plus') versus control (no 'steroid plus'). One trial compared anabolic steroid injections every three weeks for 12 months in combination with daily supplement of vitamin D and calcium versus calcium only in 63 women who were living independently at home. The other trial compared anabolic steroid injections every three weeks for six months and daily protein supplementation versus control in 40 "lean elderly women". Both trials found some evidence of better function in the steroid plus group. One trial reported greater independence, higher Harris hip scores and gait speeds in the steroid plus group at 12 months. The second trial found fewer participants in the anabolic steroid group were either dependent in at least two functions, including bathing, or dead at six and 12 months (one person in the control group died) (1/17 versus 7/18; RR 0.15, 95% CI 0.02 to 1.10; P = 0.06). Pooled mortality data (2/51 versus 3/51) from the two trials showed no evidence of a difference between the two groups at one year. Similarly, there was no evidence of between-group differences in individual adverse events. Three participants in the steroid group of one trial reported side effects of hoarseness and increased facial hair. The other trial reported better quality of life in the steroid plus group. AUTHORS' CONCLUSIONS: The available evidence is insufficient to draw conclusions on the effects, primarily in terms of functional outcome and adverse events, of anabolic steroids, either separately or in combination with nutritional supplements, after surgical treatment of hip fracture in older people. Given that the available data points to the potential for more promising outcomes with a combined anabolic steroid and nutritional supplement intervention, we suggest that future research should focus on evaluating this combination.


Asunto(s)
Anabolizantes/uso terapéutico , Andrógenos/uso terapéutico , Fracturas de Cadera/rehabilitación , Nandrolona/análogos & derivados , Anciano , Anciano de 80 o más Años , Anabolizantes/efectos adversos , Andrógenos/efectos adversos , Femenino , Anciano Frágil , Fracturas de Cadera/cirugía , Humanos , Masculino , Nandrolona/efectos adversos , Nandrolona/uso terapéutico , Nandrolona Decanoato , Cuidados Posoperatorios/métodos , Calidad de Vida , Ensayos Clínicos Controlados Aleatorios como Asunto
19.
Reprod Biol ; 14(3): 182-9, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25152515

RESUMEN

The objective of the study was to investigate the protective effect of Apium graveolens (AP) against di-(2-ethylhexyl) phthalate (DEHP)-induced testes injury in rats. Adult rats were divided into nine groups: (1) control group (no treatment); (2) corn oil (60 µg/kg body weight - bwt); (3) AP (50 µg/kg bwt); (4) 300 mg DEHP/kg bwt; (5) 500 mg DEHP/kg bwt; (6) 1000 mg DEHP/kg bwt; (7) 300 mg DEHP/kg bwt+AP; (8) 500 mg DEHP/kg bwt+AP; and (9) 1000 mg DEHP/kg bwt+AP. Oral administration of treatments was performed daily for 6 weeks. DEHP decreased (p<0.01) body weight, testis weight and serum concentrations of testosterone, cholesterol and total proteins. Moreover, DEHP increased (p<0.001) total antioxidant capacity in the testis and plasma DEHP level. In addition, DEHP decreased mRNA expression of two testicular steroidogenic enzymes: 3ß-hydroxysteroid dehydrogenase and 17ß-hydroxysteroid dehydrogenase. DEHP also caused atrophy, vacuolar degeneration and aspermia of the seminiferous tubules. AP administered concurrently with DEHP effectively alleviated most of the DEHP-induced effects. In conclusion, in male rats, DEHP had adverse effects on the testis including inhibition of androgen production. A concurrent administration of A. graveolens (celery oil) protected the testis against DEHP-induced toxicity.


Asunto(s)
Apium/química , Dietilhexil Ftalato/antagonistas & inhibidores , Disruptores Endocrinos/química , Infertilidad Masculina/prevención & control , Aceites Volátiles/uso terapéutico , Fitoterapia , Testículo/efectos de los fármacos , 17-Hidroxiesteroide Deshidrogenasas/antagonistas & inhibidores , 17-Hidroxiesteroide Deshidrogenasas/genética , 17-Hidroxiesteroide Deshidrogenasas/metabolismo , 3-Hidroxiesteroide Deshidrogenasas/antagonistas & inhibidores , 3-Hidroxiesteroide Deshidrogenasas/genética , 3-Hidroxiesteroide Deshidrogenasas/metabolismo , Andrógenos/efectos adversos , Andrógenos/uso terapéutico , Animales , Antioxidantes/efectos adversos , Antioxidantes/uso terapéutico , Dietilhexil Ftalato/administración & dosificación , Dietilhexil Ftalato/farmacocinética , Dietilhexil Ftalato/toxicidad , Relación Dosis-Respuesta a Droga , Egipto , Disruptores Endocrinos/administración & dosificación , Disruptores Endocrinos/farmacocinética , Disruptores Endocrinos/toxicidad , Etnofarmacología , Frutas/química , Regulación Enzimológica de la Expresión Génica/efectos de los fármacos , Infertilidad Masculina/inducido químicamente , Infertilidad Masculina/metabolismo , Infertilidad Masculina/patología , Masculino , Medicinas Tradicionales Africanas , Aceites Volátiles/efectos adversos , Tamaño de los Órganos/efectos de los fármacos , Fitoterapia/efectos adversos , Ratas Wistar , Semillas/química , Testículo/metabolismo , Testículo/patología
20.
Obesity (Silver Spring) ; 22(6): 1477-84, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24639082

RESUMEN

OBJECTIVE: Androgen excess in women is associated with visceral adiposity. However, little is known on the mechanism through which androgen promotes visceral fat accumulation. METHODS: To address this issue, female mice to chronic androgen excess using 5α-dihydrotestosterone (DHT) and studied the regulation of energy homeostasis was exposed. RESULTS: DHT induced a leptin failure to decrease body weight associated with visceral adiposity but without alterations in leptin anorectic action. This paralleled leptin's failure to upregulate brown adipose tissue expression of uncoupling protein-1, associated with decreased energy expenditure (EE). DHT decreased hypothalamic proopiomelanocortin (pomc) mRNA expression and increased POMC intensity in neuronal bodies of the arcuate nucleus while simultaneously decreasing the intensity of POMC projections to the dorsomedial hypothalamus (DMH). This was associated with a failure of the melanocortin 4 receptor agonist melanotan-II to suppress body weight. CONCLUSION: Taken together, these data indicate that androgen excess promotes visceral adiposity with reduced POMC neuronal innervation in the DMH, reduced EE but without hyperphagia.


Asunto(s)
Adiposidad/fisiología , Andrógenos/administración & dosificación , Andrógenos/sangre , Dihidrotestosterona/administración & dosificación , Dihidrotestosterona/sangre , Grasa Intraabdominal/efectos de los fármacos , Tejido Adiposo Pardo/efectos de los fármacos , Tejido Adiposo Pardo/metabolismo , Andrógenos/efectos adversos , Animales , Núcleo Arqueado del Hipotálamo/efectos de los fármacos , Núcleo Arqueado del Hipotálamo/metabolismo , Composición Corporal , Peso Corporal , Metabolismo Energético , Femenino , Hiperfagia/patología , Hipotálamo/efectos de los fármacos , Hipotálamo/metabolismo , Grasa Intraabdominal/metabolismo , Canales Iónicos/genética , Canales Iónicos/metabolismo , Leptina/sangre , Ratones , Ratones Endogámicos C57BL , Proteínas Mitocondriales/genética , Proteínas Mitocondriales/metabolismo , Obesidad/metabolismo , Péptidos Cíclicos/metabolismo , Proopiomelanocortina/genética , Proopiomelanocortina/metabolismo , ARN Mensajero/genética , ARN Mensajero/metabolismo , Receptor de Melanocortina Tipo 4/genética , Receptor de Melanocortina Tipo 4/metabolismo , Proteína Desacopladora 1 , Regulación hacia Arriba , alfa-MSH/análogos & derivados , alfa-MSH/metabolismo
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