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1.
Arq. bras. oftalmol ; 84(1): 78-82, Jan.-Feb. 2021. graf
Article in English | LILACS | ID: biblio-1153102

ABSTRACT

ABSTRACT This report is of three cases of sicca syndrome, initially suspected to be Sjögren's syndrome, which was ruled out by clinical and laboratory investigations. The patients were a 24-year-old woman, a 32-year-old man, and a 77-year-old woman with chronic symptoms of sicca syndrome, including dry eye syndrome. The first case was associated with the use of isotretinoin, a retinoic acid. The second was associated with the use of anabolic androgenic steroids, and the third was related to a prolactin- secreting pituitary adenoma. All cases manifested sicca, including dry eye syndrome, after those events, and the manifestations persisted. Magnetic resonance imaging revealed bilateral atrophy of the lacrimal gland. The medical history, ocular examinations, laboratory exams, and magnetic resonance images confirmed dry eye syndrome; however, the exams were all negative for Sjögren's syndrome. The lacrimal gland was absent on magnetic resonance imaging in all three cases. The clinical history revealed that the signs and symptoms appeared after chronic exposure to retinoic acid, anabolic androgenic steroids, and a prolactin-secreting pituitary adenoma, respectively. Chronic isotretinoin, anabolic androgenic steroids, and prolactin-secreting pituitary adenoma or, in this last case, its inhibitory treatment, can cause lacrimal gland atrophy, sicca syndrome, and dry eye syndrome, and a differential diagnosis of Sjögren's syndrome. Further studies on doses, time, and other susceptibilities to the long-lasting adverse effects of retinoic acid, anabolic androgenic steroids, and the repercussions of prolactin-secreting pituitary adenoma are necessary to confirm and expand upon these associations.


RESUMO O relato descreve três casos de síndrome de sicca, inicialmente suspeitos de serem a síndrome de Sjögren, que fo­ram negados pela investigação clínica e laboratorial. O primeiro associado ao uso de isotretinoína, um ácido retinóico, o segundo ao uso de esteroides androgênicos anabolizantes e o terceiro relacionado ao adenoma da hipófise secretora da prolactina, todos manifestaram sicca, incluindo a síndrome do olho seco após esses eventos e as manifestações persistem. A ressonância magnética revelou atrofia bilateral da glândula lacrimal. Eles eram uma mulher de 24 anos, um homem de 32 anos e uma mulher de 77 anos com sintomas crônicos da síndrome de sicca, incluindo a síndrome do olho seco. A história médica, o exame ocular, os exames laboratoriais e a ressonância magnética foram confirmados como síndrome do olho seco, no entanto, todos os exames foram negativos para a síndrome de Sjögren. A glândula lacrimal estava ausente na ressonância magnética nos três casos. A história clínica revelou que sinais e sintomas se manifestaram após exposição crônica ao ácido retinóico, esteróides anabolizantes androgênicos e adenoma secretivo da prolactina hipofisária, respectivamente. Isotretinoína crônica, esteroides anabólicos androgênicos e adenoma hipofisário secretor de prolactina ou, neste último caso, seu tratamento inibitório pode ser a causa da atrofia da glândula lacrimal, síndrome da sicca e síndrome do olho seco e diagnóstico diferencial da síndrome de Sjögren. Estudos adicionais sobre doses, duração e outras suscetibilidades aos efeitos adversos duradouros do ácido retinóico, esteroides androgênicos anabólicos e repercussões do adenoma da hipófise secretora da prolactina são necessários para confirmar e detalhar essas associações.


Subject(s)
Humans , Male , Female , Adult , Aged , Dry Eye Syndromes , Sjogren's Syndrome , Lacrimal Apparatus , Prolactin , Atrophy , Dry Eye Syndromes/diagnosis , Dry Eye Syndromes/chemically induced , Dry Eye Syndromes/pathology , Isotretinoin/adverse effects , Sjogren's Syndrome/diagnosis , Sjogren's Syndrome/chemically induced , Sjogren's Syndrome/pathology , Diagnosis, Differential , Androgens , Lacrimal Apparatus/pathology , Lacrimal Apparatus/diagnostic imaging
2.
Med. lab ; 25(1): 393-408, 2021. tab, graf, ilus, fotografia
Article in Spanish | LILACS | ID: biblio-1292643

ABSTRACT

La ginecomastia es el crecimiento mamario benigno en el varón. Etiológicamente se clasifica en fisiológica y patológica. La ginecomastia fisiológica se presenta frecuentemente en ciertos periodos de la vida, como la época neonatal, puberal y senil. La patológica se asocia a múltiples factores, incluyendo los hormonales, los de origen tumoral, y al uso de ciertos medicamentos, entre otros; sin embargo, en muchos pacientes no se consigue identificar nunca la causa. La historia clínica y el examen físico son los pilares fundamentales que permiten orientar hacia la etiología, con el apoyo de pruebas de laboratorio e imagenología que permitan descartar una enfermedad clínica subyacente. En los casos moderados o severos, la cirugía es el tratamiento de elección. El objetivo del presente manuscrito es discutir algunos puntos de interés acerca de los aspectos más importantes relacionados con la ginecomastia, incluyendo la fisiopatología, la clínica y el diagnóstico, además de presentar las principales causas asociadas a esta condición. Por último, se describen los tipos de tratamiento disponibles para estos pacientes


Gynecomastia is the benign breast enlargement in males. Etiologically it is classified as physiological and pathological. Physiological gynecomastia is more frequently observed in newborns, adolescents, and in older men. Pathological gynecomastia is associated with multiple factors, including hormonal and of tumor origin, and to the use of certain medications, among other factors; however, in many patients the underlying cause may never be identified. Anamnesis and physical examination are the fundamental pillars that will guide towards the etiology, with the support of laboratory and imaging tests to rule out an underlying disease. In moderate or severe cases, surgery is the treatment of choice. The aim of this article is to discuss some key points about the most important aspects related to gynecomastia, including pathophysiology, symptoms and diagnosis, in addition to presenting the main causes associated with this condition. Finally, the types of treatment available for these patients are described


Subject(s)
Gynecomastia , Testosterone , Estrogens , Hypogonadism , Androgens
3.
Rev. Hosp. Ital. B. Aires (2004) ; 40(1): 34-38, mar. 2020. tab
Article in Spanish | LILACS | ID: biblio-1102292

ABSTRACT

Las mujeres han sido tratadas por décadas con testosterona intentando aliviar una gran variedad de síntomas con riesgos y beneficios inciertos. En la mayoría de los países, la testosterona se prescribe "off-label", de modo que las mujeres están utilizando compuestos y dosis ideadas para tratamientos en hombres. En este sentido, varias sociedades médicas de distintos continentes adoptaron recientemente por consenso una toma de posición sobre los beneficios y potenciales riesgos de la terapia con testosterona en la mujer, explorar las áreas de incertidumbre e identificar prácticas de prescripción con potencial de causar daño. Las recomendaciones con respecto a los beneficios y riesgos de la terapia con testosterona se basan en los resultados de ensayos clínicos controlados con placebo de al menos 12 semanas de duración. A continuación se comentan las recomendaciones. (AU)


There are currently no clear established indications for testosterone replacement therapy for women. Nonetheless, clinicians have been treating women with testosterone to alleviate a variety of symptoms for decades with uncertainty regarding its benefits and risks. In most countries, testosterone therapy is prescribed off-label, which means that women are using testosterone formulations or compounds approved for men with a modified dose for women. Due to these issues, there was a need for a global Consensus Position Statement on testosterone therapy for women based on the available evidence from placebo randomized controlled trials (RCTs). This Position Statement was developed to inform health care professionals about the benefits and potential risks of testosterone therapy intended for women. The aim of the Consensus was to provide clear guidance as to which women might benefit from testosterone therapy; to identify symptoms, signs, and certain conditions for which the evidence does not support the prescription of testosterone; to explore areas of uncertainty, and to identify any prescribing practices that have the potential to cause harm. (AU)


Subject(s)
Humans , Female , Aged , Testosterone/therapeutic use , Postmenopause/drug effects , Appetite Depressants/adverse effects , Phenytoin/adverse effects , Placebos/administration & dosage , Psychotropic Drugs/adverse effects , Tamoxifen/adverse effects , Testosterone/administration & dosage , Testosterone/analysis , Testosterone/adverse effects , Testosterone/pharmacology , Cardiovascular Agents/adverse effects , Indomethacin/adverse effects , Gonadotropin-Releasing Hormone/adverse effects , Postmenopause/physiology , Controlled Clinical Trials as Topic , Cholinergic Antagonists/adverse effects , Contraceptives, Oral/adverse effects , Sexual Dysfunctions, Psychological/etiology , Sexual Dysfunctions, Psychological/therapy , Danazol/adverse effects , Consensus , Aromatase Inhibitors/adverse effects , Off-Label Use , Factor Xa Inhibitors/adverse effects , Amphetamines/adverse effects , Histamine Antagonists/adverse effects , Androgen Antagonists/adverse effects , Androgens/physiology , Ketoconazole/adverse effects , Narcotics/adverse effects
4.
Arch. endocrinol. metab. (Online) ; 64(1): 4-10, Jan.-Feb. 2020. tab
Article in English | LILACS | ID: biblio-1088773

ABSTRACT

ABSTRACT Objective The aim of this study was to investigate polycystic ovary syndrome (PCOS) and to explore the relationship between body fat percentage and metabolic markers. Subjects and methods Sedentary women were assigned to PCOS (N = 60) and CONTROL (N = 60) groups. Each group was subdivided into three subgroups according to body fat percentage (22-27%, 27-32% and 32-37%). The protocol consisted of assessments of glucose, insulin, androgens, follicle stimulating hormone (FSH), luteinizing hormone (LH), 17-hydroxyprogesterone (17-OHP), leptin, adiponectin, tumor necrosis factor (TNF-α) and interleukin-6 (IL-6). Results The PCOS subgroups showed higher concentrations of androgens, LH and 17-OHP. Leptin showed direct relationship with increased body fat percentage, whereas adiponectin showed the inverse effect. However, both were unaffected by PCOS. TNF-α and IL-6 were higher in PCOS women and showed a direct relationship with increased body fat percentage. Glucose showed direct relationship with body fat percentage, whereas insulin presented higher values in PCOS women and direct relationship with increased body fat percentage. Conclusions Our findings indicate that PCOS and body fat percentage directly influence concentrations of insulin, TNF-α and IL-6, whereas leptin and adiponectin are influenced only by the increase in body fat percentage in these women. Arch Endocrinol Metab. 2020;64(1):4-10


Subject(s)
Humans , Female , Adolescent , Adult , Young Adult , Biomarkers/blood , Adipose Tissue/anatomy & histology , Metabolic Diseases/blood , Insulin Resistance , Luteinizing Hormone/blood , Body Mass Index , Case-Control Studies , Interleukin-6/blood , Tumor Necrosis Factor-alpha/blood , 17-alpha-Hydroxyprogesterone/blood , Leptin/blood , Adiponectin/blood , Follicle Stimulating Hormone/blood , Glucose/analysis , Androgens/blood , Insulin/blood
5.
Rev. Assoc. Med. Bras. (1992) ; 66(1): 36-41, Jan. 2020. tab, graf
Article in English | LILACS | ID: biblio-1091909

ABSTRACT

SUMMARY OBJECTIVE Acne vulgaris in female adolescents, when severe or accompanied by other signs of androgenization, may represent a sign of hyperandrogenemia often underdiagnosed, which will have harmful consequences for adult life. The objective of this cross-sectional and retrospective study was to demonstrate the incidence of hormonal changes in the cases of female adolescents with severe or extensive acne, with or without other signs of hyperandrogenism, and propose a hormonal research pattern which should be indicated in order to detect early hyperandrogenemia. METHODS The medical records of 38 female patients aged between 9 and 15 years old with grade II and/or III acne were analyzed. The dehydroepiandrosterone sulfate, dehydroepiandrostenedione, and androstenedione, total testosterone, and dihydrotestosterone sulfate hormones were required prior to initiation of treatment. The hormonal dosages were performed in the serum after at least 3 hours of fasting by means of radioimmunoassay tests. RESULTS Of the 38 patients included, 44.7% presented changes in androgen levels (hyperandrogenemia), and the two most frequently altered hormones were DHEA and androstenedione, with the same incidence (23.6%). CONCLUSIONS The correct and early diagnosis provides an effective and agile approach, including antiandrogen therapy, with the purpose of avoiding the reproductive and metabolic repercussions, besides controlling the inflammatory picture and avoid aesthetic complications.


RESUMO OBJETIVO A acne vulgar em adolescentes do sexo feminino, quando grave ou acompanhada de outros sinais de androgenização, pode representar um sinal de hiperandrogenemia muitas vezes subdiagnosticado, que acarretará consequências danosas para a vida adulta. O objetivo deste estudo transversal e retrospectivo foi demonstrar a incidência das alterações hormonais nos casos de adolescentes do sexo feminino com acne grave ou extensa, acompanhada ou não de outros sinais de hiperandrogenismo e propor um padrão de pesquisa hormonal que deve ser indicado com o intuito de detectar precocemente o quadro de hiperandrogenemia. MÉTODOS Foram analisados os prontuários de 38 pacientes do sexo feminino com idades entre 9 e 15 anos, portadoras de quadro de acne grau II e/ou III. Os hormônios sulfato de dehidroepiandrostenediona, dehidroepiandrostenediona, androstenediona, testosterona total e dehidrotestosterona foram solicitados antes do início do tratamento. As dosagens hormonais foram realizadas no soro após pelo menos 3 horas de jejum por meio de exames de radioimunoensaio. RESULTADOS Das 38 pacientes incluídas, 44,7% apresentaram alterações dos níveis de andrógenos (hiperandrogenemia), sendo que os dois hormônios mais frequentemente alterados foram o DHEA e androstenediona, com a mesma incidência (23,6%). CONCLUSÕES O diagnóstico correto e precoce propicia uma abordagem efetiva e ágil, incluindo a terapia antiandrogênica, com a finalidade de evitar as repercussões reprodutivas e metabólicas, além de controlar o quadro inflamatório e evitar complicações estéticas.


Subject(s)
Humans , Female , Child , Adolescent , Acne Vulgaris/blood , Hyperandrogenism/diagnosis , Androgens/blood , Severity of Illness Index , Hyperandrogenism/blood
6.
Electron. j. biotechnol ; 43: 8-15, Jan. 2020. tab
Article in English | LILACS | ID: biblio-1087467

ABSTRACT

Background: Plant tissue cultures have the potential to reprogram the development of microspores from normal gametophytic to sporophytic pathway resulting in the formation of androgenic embryos. The efficiency of this process depends on the genotype, media composition and external conditions. However, this process frequently results in the regeneration of albino instead of green plants. Successful regeneration of green plants is affected by the concentration of copper sulfate (CuSO4) and silver nitrate (AgNO3) and the length of induction step. In this study, we aimed at concurrent optimization of these three factors in barley (Hordeum vulgare L.), wheat (Triticum aestivum L.), and triticale (x Triticosecale spp. Wittmack ex A. Camus 1927) using the Taguchi method. We evaluated uniform donor plants under varying experimental conditions of in vitro anther culture using the Taguchi approach, and verified the optimized conditions. Results: Optimization of the regeneration conditions resulted in an increase in the number of green regenerants compared with the control. Statistic Taguchi method for optimization of the in vitro tissue culture plant regeneration via anther cultures allowed reduction of the number of experimental designs from 27 needed if full factorial analysis is used to 9. With the increase in the number of green regenerants, the number of spontaneous doubled haploids decreased. Moreover, in barley and triticale, the number of albino regenerants was reduced. Conclusion: The statistic Taguchi approach could be successfully used for various factors (here components of induction media, time of incubation on induction media) at a one time, that may impact on cereals anther cultures to improve the regeneration efficiency


Subject(s)
Agricultural Cultivation , Edible Grain/growth & development , Models, Statistical , Pigments, Biological , Plant Growth Regulators , Pollen , Silver Nitrate , Color , Copper Sulfate , Androgens
7.
Acta Physiologica Sinica ; (6): 243-248, 2020.
Article in Chinese | WPRIM | ID: wpr-827063

ABSTRACT

Androgen plays an important role in singing of songbirds. Recent studies have shown that androgen levels in vivo not only affect the external morphology of songbirds, but also affect their singing behavior. Androgens (including derivatives) affect singing behavior and singing system in many ways. Based mainly on the results from our research group in the zebra finch, this review summarizes the effects of androgen on singing behavior, excitability and synaptic transmission of projection neurons of singing system, and the interaction of androgen with other neurotransmitter receptors in the brain of songbirds.


Subject(s)
Androgens , Physiology , Animals , Brain , Physiology , Songbirds , Physiology , Vocalization, Animal
9.
Arch. endocrinol. metab. (Online) ; 63(3): 190-198, May-June 2019. tab
Article in English | LILACS | ID: biblio-1011166

ABSTRACT

ABSTRACT Objective To summarize current evidence regarding testosterone treatment for women with low sexual desire. Materials and methods The Female Endocrinology and Andrology Department of the Brazilian Society of Endocrinology and Metabolism invited nine experts to review the physiology of testosterone secretion and the use, misuse, and side effects of exogenous testosterone therapy in women, based on the available literature and guidelines and statements from international societies. Results Low sexual desire is a common complaint in clinical practice, especially in postmenopausal women, and may negatively interfere with quality of life. Testosterone seems to exert a positive effect on sexual desire in women with sexual dysfunction, despite a small magnitude of effect, a lack of long-term safety data, and insufficient evidence to make a broad recommendation for testosterone therapy. Furthermore, there are currently no testosterone formulations approved for women by the relevant regulatory agencies in the United States, Brazil, and most other countries, and testosterone formulations approved for men are not recommended for use by women. Conclusion Therefore, testosterone therapy might be considered if other strategies fail, but the risks and benefits must be discussed with the patient before prescription. Arch Endocrinol Metab. 2019;63(3):190-8


Subject(s)
Humans , Female , Adolescent , Adult , Middle Aged , Aged , Young Adult , Sexual Dysfunction, Physiological/drug therapy , Testosterone/therapeutic use , Androgens/therapeutic use , Libido/drug effects , Societies, Medical , Testosterone/adverse effects , Testosterone/blood , Practice Guidelines as Topic , Androgens/adverse effects , Androgens/blood
10.
An. bras. dermatol ; 94(3): 327-330, May-June 2019. tab
Article in English | LILACS | ID: biblio-1011107

ABSTRACT

Abstract: Background: Seborrheic dermatitis is a common disease characterized by the erythematous plaques with oily-yellow desquamation. Increased sebaceous gland activity by androgenic hormones has played a role in the etiology of the disease. The second-to-fourth digit (2D:4D) ratio is thought to be a marker of prenatal androgen exposure. Objectives: To investigate the association between 2D:4D ratios and seborrheic dermatitis in a male population. Methods: Healthy male controls and patients with seborrheic dermatitis were included in this study. One hundred seborrheic dermatitis patients and 120 healthy controls, aged 17-59, were enrolled. A digital Vernier caliper was used to measure the finger lengths. Seborrheic dermatitis severity was assessed using the Seborrheic Dermatitis Area and Severity Index (SDASI). Results: The 2D:4D ratios of the patients (x = 0.977) were significantly lower than those of the controls (x = 1.050) for right hands (t = 6.948; p = 0.000; > 0.05). No similar relationship was found between the 2D:4D ratio for left hands (t = 0.901; p = 0.368; > 0.05). Seborrheic dermatitis severity was negatively correlated with 2D:4D ratios of right hands (r = -0.391; p = 0.000-0.05). Study limitations: One of the main limitations of this study was the small sample, which got a head of us from acquiring certain findings about the 2D:4D ratio and seborrheic dermatitis. The other limitation is that the patient selection did not reflect the general population, as a single clinic was studied. Conclusion: To the authors' knowledge, this is the first study examining the relationship between 2D:4D ratios and seborrheic dermatitis. The result of this study may indicate a line of investigation and can support the theory of prenatal androgen exposure.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Young Adult , Dermatitis, Seborrheic/diagnosis , Fingers/anatomy & histology , Organ Size , Prenatal Exposure Delayed Effects , Severity of Illness Index , Pregnancy , Biomarkers , Case-Control Studies , Anthropometry , Hand/anatomy & histology , Androgens/metabolism
11.
An. bras. dermatol ; 94(1): 62-75, Jan.-Feb. 2019. tab, graf
Article in English | LILACS | ID: biblio-983728

ABSTRACT

Abstract: Background: Acne in women is often associated with anxiety and depression, and may persist from adolescence as well as manifest for the first time in adulthood. Genetic and hormonal factors contribute to its etiopathogenesis, and maintenance treatment is required, usually for years, due to its clinical evolution. Objective: To develop a guide for the clinical practice of adult female acne. Methods: A team of five experts with extensive experience in acne conducted a literature review of the main scientific evidence and met to discuss the best practices and personal experiences to develop a guide containing recommendations for the clinical practice of adult female acne. Results: The group of specialists reached consensus on the main guidelines for clinical practice, providing detailed recommendations on clinical picture, etiopathogenesis, laboratory investigation and treatment of adult female acne. Conclusion: Different from teenage acne, adult female acne presents some characteristics and multiple etiopathogenic factors that make its management more complex. This guide provides recommendations for best clinical practices and therapeutic decisions. However, the authors consider that additional studies are needed in order to provide more evidence for adult female acne to be better understood.


Subject(s)
Humans , Female , Adult , Acne Vulgaris/etiology , Acne Vulgaris/drug therapy , Quality of Life , Sebum , Risk Factors , Practice Guidelines as Topic , Consensus , Dermatologic Agents/therapeutic use , Androgens , Anti-Bacterial Agents/therapeutic use
12.
Article in Chinese | WPRIM | ID: wpr-773727

ABSTRACT

The present study was conducted to explores the effects of short-term addition of 17β-E2 on the growth,gonad development and internal quality of overwintering Whitmania pigra. Before overwintering,0. 0,1. 0,10. 0,25. 0,50. 0,100. 0 μg·L~(-1) of 17β-E2 were added to the aquaculture water for 6 weeks and then hibernated for 60 days. The changes of growth performance,gonad index,morphological structure of spermary( ovary),endogenous steroid hormones level and internal quality were measured. The results showed that the body weight,weight gain rate,specific growth rate,female gonad index,oocyte development and endogenous estrogen level of the leech increased first and then decreased with the increase of the concentration of exogenous 17β-E2,which were higher than those of the control group. The body weight,weight gain rate and specific growth rate of the leech at the concentration of 25 μg·L~(-1)17β-E2 were significantly higher than those of the other groups( P<0. 05),oocyte development and endogenous estrogen levels were significantly higher than those of other groups at the concentration of 50 μg·L~(-1)( P<0. 05). When the concentration of exogenous 17β-E2 was higher than 50 μg·L~(-1),the levels of male gonad index,spermatocyte development,endogenous androgen and progesterone were significantly inhibited( P< 0. 05). There was no significant difference in endogenous corticosteroid levels among the groups. In conclusion,short-term addition of exogenous 17β-E2 of 10-25 μg·L~(-1) could promote the growth of overwintering leeches,oocyte development and antithrombin activity without inhibiting the development of male gonads.


Subject(s)
Androgens , Animals , Estradiol , Pharmacology , Estrogens , Female , Gonads , Hibernation , Leeches , Male , Progesterone
13.
São Paulo; s.n; s.n; 2019. 122 p. tab, graf.
Thesis in Portuguese | LILACS | ID: biblio-1049921

ABSTRACT

O lincRNA PVT1 (Plasmacytoma Variant Translocation 1) é um RNA longo não codificador de proteínas (ncRNA) descrito como um oncogene sendo superexpresso em vários tipos de cânceres. LincRNA PVT1 está localizado na região genômica 8q24, também conhecida como 'gene desert'. O nível de expressão do lincRNA PVT1 está associado ao aumento do risco de câncer de próstata (PCa) e está correlacionado com os níveis de expressão do receptor de andrógeno (AR). No entanto, o mecanismo do envolvimento do lincRNA PVT1 com o AR no desenvolvimento de câncer de próstata ainda não está bem esclarecido. Aqui, nós testamos a hipótese que a formação do complexo AR-EZH2-PVT1 participa na regulação da expressão gênica em câncer de próstata, nas células LNCaP. A imunoprecipitação de ribonucleoproteínas seguida de PCR quantitativo (RIP-qPCR) revelou que o lincRNA PVT1 está associado fisicamente ao AR (12% do input) e à metiltransferase EZH2, proteína componente do complexo repressor Polycomb 2 (36% do input) sob condições suplementadas com andrógeno (+R1881). O lincRNA PVT1 também está associado fisicamente ao AR (10% de input) e à EZH2 (42% de input) em condições de privação de andrógeno (-R1881). Assim, a associação física entre lincRNA PVT1, AR e EZH2 é independente do hormônio andrógeno. Usando uma abordagem de estudo em larga-escala de perda e ganho de função, nossos resultados mostraram que o silenciamento do lincRNA PVT1 em células LNCaP na presença de andrógeno restaura a expressão parcialmente, totalmente ou causa superexpressão de 160 genes que tiveram a expressão inibida por andrógeno. Entre esses genes, destacamos genes envolvidos na regulação da diferenciação celular, em componentes da junção célula-célula, na inibição da migração e invasão celular e no desencadeamento da via apoptótica. Imunoprecipitação da cromatina seguida de PCR quantitativo (ChIP-qPCR), em cultura de células LNCaP suplementada com andrógeno sob silenciamento do lincRNA PVT1, mostrou aumento significativo na ocupação pela marca de histona ativadora H3K27Ac do promotor do gene NOV, um dos genes que tiveram sua expressão aumentada com o silenciamento de PVT1. O ChIP-qPCR também mostrou, após o silenciamento do lincRNA PVT1, um aumento significativo da marca H3K27me3 na região enhancer do gene NOV, uma característica de enhancers poised (prontos para ativação). Em conclusão, nós fornecemos a primeira evidência experimental para um mecanismo de ação do oncogene lincRNA PVT1 em células de câncer de próstata e demonstramos que sua ação inibidora da expressão afeta genes alvo que facilitam a proliferação e migração de células do câncer de próstata, sugerindo que o lincRNA PVT1 é um novo agente no complexo mecanismo de repressão transcricional envolvendo um RNA silenciador, o receptor de andrógeno (AR) e o potenciador de Zeste homólogo 2 (EZH2) no remodelamento da cromatina em células LNCaP


Long non-coding RNA (lncRNA) plasmacytoma variant translocation 1 (PVT1) is an oncogene known to be overexpressed in various types of cancer. PVT1 lincRNA is located in the wellknown cancer-related genomic region 8q24, also known as 'gene desert. PVT1 lincRNA level of expression is associated with increased prostate cancer (PCa) risk and is correlated with androgen receptor (AR) expression levels. However, the mechanism of PVT1 and AR involvement in the development of prostate cancer is still unclear. Here, we tested the hypothesis that formation of the complex AR-EZH2-PVT1 participates in the regulation of gene expression in prostate cancer, in LNCaP cells. Ribonucleoprotein immunoprecipitation followed by quantitative PCR (RIP-qPCR) revealed that PVT1 lincRNA binds both the AR (12 % of PVT1 input) and the methyltransferase EZH2 from the Polycomb repressive complex 2 (36 % of input) under androgen-supplemented conditions (+R1881). PVT1 also binds both AR (10 % of input) and EZH2 (42 % of input) under androgen-deprived conditions (-R1881). Thus, PVT1 binding to AR and EZH2 is independent of the androgen hormone. Using a large-scale loss and gain of function approach, our results show that PVT1 knockdown (KD) in LNCaP in the presence of androgen restores the expression partially, fully or causes overexpression of 160 genes that are inhibited by androgen. Among these genes, we highlight genes involved in regulation of cell differentiation, in components of cell-cell junction, in inhibition of cell migration and invasion and in triggering of the apoptotic pathway. Chromatin immunoprecipitation followed by quantitative PCR (ChIP-qPCR) with LNCaP cells in androgen-supplemented cultures under PVT1 lincRNA knockdown showed a significant increase in occupancy by the histone activation mark H3K27Ac of the promoter region of the NOV gene, one of the genes that had an increased expression upon PVT1 silencing. ChIPqPCR also showed a significant increase upon PVT1 lincRNA silencing of the H3K27me3 histone mark in the enhancer region of the NOV gene, a distinct feature of poised enhancers. In conclusion, we provide first experimental evidence for a mechanism of action of PVT1 lincRNA oncogene in prostate cancer cells, and show that its inhibitory action affects targetgenes that facilitate proliferation and migration of prostate cancer cells, thus suggesting PVT1 lincRNA as a novel lncRNA player in the complex mechanism of transcriptional repression involving a silencer RNA, the androgen receptor (AR) and the Enhancer of zeste homolog 2 (EZH2) in chromatin remodeling in LNCaP cells


Subject(s)
Plasmacytoma , RNA, Long Noncoding/adverse effects , Enhancer of Zeste Homolog 2 Protein/analysis , Androgens/analysis , Prostatic Neoplasms/diagnosis
14.
Rev. chil. endocrinol. diabetes ; 12(1): 11-15, 2019. tab, ilus
Article in Spanish | LILACS | ID: biblio-982011

ABSTRACT

Clinical case: a girl of 7 ½ years who consulted for early pubarche without thelark, with a percentile size of 75 for a genetic target size in the 10th percentile, overweight with a 90th percentile BMI, and normal blood pressure. The biochemical study showed high levels of androgens: testosterone: 7.2 ng/dL, androstenedione of 5.1 ng / ml, 17OHP: 15 ng / dL with low normal DHEAS (0.26 ug/ml), Plasma Renin Activity normal low: 0.22 ng/mL/h. Initial imaging study showed a bone age of 10 years 6 months and normal abdominal and pelvic ultrasound. Molecular study showed no pathogenic variants in the CYP21A2 gene (21 Hydroxylase). With a probable diagnosis of non-classical congenital adrenal hyperplasia (HSRNC) and no known mutation, he started treatment with hydrocortisone (12 mg/m2). At 8.7 years, pubertal development begins and braking begins with LHRH analogues, which are administered for 18 months. Despite the treatment, signs of virilization and elevation of androgens (testosterone up to 130 ng/ml) are progressively accentuated, which do not diminish when trying different corticosteroid schemes. MRI of the abdomen and pelvis shows the normal adrenal glands and a solid nodular image of 2.1 x 1.6 cm in the right ovary (Figure 2), later demonstrated with pelvic ultrasound (Figure 2). Right laparoscopic oophorectomy was performed, whose biopsy demonstrated a Leydig cell tumor. One month after surgery, all androgenic levels were normalized, so the gradual suspension of corticosteroids began. Conclusion: Although HSRNC is the most frequent pathological cause of early pubarche, when it is associated with progressive clinical and biochemical hyperandrogenism despite adequate treatment and without pathogenic variants in the CYP21A2 gene, even with high levels of 17OHP, other causes should be considered, specifically, androgen producing tumors.


Caso clínico: niña de 7½ años que consulta por pubarquia precoz sin telarquia, con talla en percentil 75 para una talla objetivo genético en percentil 10, sobrepeso con IMC percentil 90 y presión arterial normal. El estudio bioquímico mostró niveles elevados de andrógenos: testosterona: 7,2 ng/dL, androstenediona de 5,1 ng/ml, 17OHP: 15 ng/dL con DHEAS normal baja (0,26 ug/ml), Actividad de Renina Plasmática normal baja: 0.22 ng/ mL/h. Estudio de imágenes inicial mostró una edad ósea de 10 años 6 meses y ecografía abdominal y pelviana normales. Estudio molecular no mostró variantes patogénicas en el gen CYP21A2 (21 Hidroxilasa). Con diagnosticó probable de hiperplasia suprarrenal congénita no clásica (HSRNC) y sin mutación conocida,inició el tratamiento con hidrocortisona (12 mg/m2). A los 8.7 años comienza desarrollo puberal y se inicia frenación con análogos de LHRH, los cuales se administran por 18 meses. A pesar del tratamiento se acentúan progresivamente los signos de virilización y hayelevación de los andrógenos (testosterona hasta 130 ng/ml), que no disminuyen intentando diferentes esquemas de corticoides. Se realiza RM de abdomen y pelvis que muestra las glándulas suprarrenales normales y una imagen nodular sólida de 2.1 x 1.6 cm en el ovario derecho (Figura 2), demostrada posteriormente con Ecografía pelviana (Figura 2). Se realiza ooforectomía derecha por vía laparoscópica, cuya biopsia demostró un tumor de células de Leydig. Un mes después de la cirugía, se normalizan todos los niveles androgénicos por lo que se inició la suspensión gradual de los corticoides. Conclusión: Aunque la HSRNC es la causa patológica más frecuente de la pubarquia precoz, cuando se asocia con un hiperandrogenismo clínico y bioquímico progresivo a pesar de un tratamiento adecuado y sin variantes patógenicas en el gen CYP21A2, incluso con niveles elevados de 17OHP, otras causas deben ser consideradas, específicamente tumores productores de andrógenos.


Subject(s)
Humans , Female , Child , Ovarian Neoplasms/complications , Ovarian Neoplasms/diagnosis , Puberty, Precocious/etiology , Leydig Cell Tumor/complications , Leydig Cell Tumor/diagnosis , Testosterone/analysis , Hyperandrogenism/etiology , Adrenal Hyperplasia, Congenital/diagnosis , 17-alpha-Hydroxyprogesterone/analysis , Hirsutism/etiology , Androgens/analysis , Androstenedione/analysis
15.
Rev. chil. obstet. ginecol. (En línea) ; 84(2): 122-129, 2019. tab
Article in Spanish | LILACS | ID: biblio-1013821

ABSTRACT

RESUMEN Introducción y objetivos: La identidad de género es la vivencia interna e individual del género tal como cada persona la siente. En algunos casos, la adquisición de los caracteres sexuales secundarios del otro género es importante en el proceso de reasignación de género, siendo importante el tratamiento endocrinológico. La cuestión es si la administración prolongada de andrógenos es segura en los casos de pacientes transexuales mujer a hombre, ya que es poca la evidencia científica a largo plazo. El objetivo de este estudio es analizar las características clínicas de los pacientes trans de nuestra unidad, y los hallazgos anatomopatológicos de las piezas quirúrgicas de histerectomía y doble anexectomía, para ver la influencia de la androgenoterapia en los genitales internos femeninos. Métodos: Se trata de un estudio descriptivo donde se analizaron datos demográficos y clínicos de los pacientes remitidos para cirugía genital, así como se analizaron los resultados del estudio anatomopatológico de las piezas de histerectomía y anexectomía. Resultados: Se incluyeron 66 pacientes, de los que 59 se intervinieron. No se halló malignidad en ninguna de las piezas quirúrgicas, sí diversos hallazgos benignos como miomas, atrofia/proliferación endometrial, actividad folicular en ovarios u ovarios tipo síndrome de ovario poliquístico. Conclusiones: La exposición a andrógenos a largo plazo no parece producir cambios malignos en la histología uterina ni ovárica, sin embargo, a menudo lleva a cambios en la actividad y la arquitectura ovárica, apreciándose en la mayoría de los casos ovarios funcionales e incluso semejantes a los observados en mujeres con ovario poliquístico.


ABSTRACT Introduction and objectives: Gender identity is the internal and individual experience of the gender as each person feels it. In some cases, the acquisition of secondary sexual characteristics of the other gender is important in the process of gender reassignment, with endocrinological treatment being important. The question is whether prolonged administration of androgens is safe in cases of transsexual women to men, since there is little scientific evidence in the long term. The aim of this study is to analyze the clinical characteristics of trans patients in our unit, and the anatomopathological findings of the surgical pieces of hysterectomy and double adnexectomy, to see the influence of androgen therapy on the female internal genitalia. Methods: This is a descriptive study where demographic and clinical data of the patients referred for genital surgery were analyzed, as well as the results of the anatomopathological study of the hysterectomy and adnexectomy pieces were analyzed. Results: 66 patients were included, of which 59 were intervened. No malignancy was found in any of the surgical pieces, but several benign findings such as myomas, endometrial atrophy / proliferation, follicular activity in ovaries or ovaries like polycystic ovary syndrome. Conclusions: Long-term exposure to androgens does not seem to produce malignant changes in uterine or ovarian histology, however, it often leads to changes in ovarian activity and architecture, with functional ovaries being seen in most cases and even similar ones. those observed in women with polycystic ovary.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Young Adult , Sex Reassignment Surgery , Transgender Persons , Genitalia, Female/pathology , Hysterectomy , Androgens/adverse effects , Transsexualism , Epidemiology, Descriptive , Risk Assessment , Genitalia, Female/surgery , Genitalia, Female/drug effects
16.
Article in Spanish | LILACS, BNUY, UY-BNMED | ID: biblio-1088684

ABSTRACT

El consumo ilícito de esteroides anabólicos androgénicos con fines estéticos ha aumentado en los últimos años y, aunque raro, es causa de hepatotoxicidad. Los casos con daño hepatocelular son más frecuentes, pero los colestásicos son más graves y pueden asociarse a falla renal. Salvo por la suspensión del fármaco, la hepatotoxicidad por anabólicos no tiene tratamiento específico. Se describe y discuten las historias clínicas de dos hombres jóvenes, deportistas aficionados que consultaron por ictericia y presentaron colestasis e insuficiencia renal. El reporte de casos, en patologías poco frecuentes, resulta fundamental para difundir y ampliar la información que ayude al clínico a considerar con firmeza este diagnóstico, incluso ante la falta de reconocimiento inicial del consumo por parte del paciente.


Illicit consumption of anabolic-androgenic steroids for aesthetic purposes has increased in recent years. Hepatocellular damage is more frequent, but cholestasis is more dangerous and may be associated with renal failure. The clinical records of two young men, amateur athletes who consulted for jaundice in the last year and denied its consumption at the beginning, are described. Except for the drug interruption, hepatotoxicity by anabolics has no specific treatment. Usually presented as cholestatic liver disease and renal failure, case reports are fundamental to characterize its clinical-evolutionary presentation. This may also allow clinicians to firmly consider diagnosis even when the patient denies consumption.


O uso ilícito de esteróides androgênicos anabólicos para fins estéticos tem aumentado nos últimos anos e, apesar de raro, é causa de hepatotoxicidade. Casos com dano hepatocelular são mais freqüentes, mas colestesia é mais grave e pode estar associada à insuficiência renal. Com exceção da suspensão do medicamento, a hepatotoxicidade anabólica não possui tratamento específico. As histórias clínicas de dois homens jovens, atletas amadores que consultaram para icterícia e apresentaram colestase e insuficiência renal, são descritos e discutidos. O relato de casos, em patologias pouco freqüentes, é fundamental para disseminar e ampliar as informações que auxiliam o clínico a considerar com firmeza esse diagnóstico antes mesmo do não reconhecimento inicial do consumo pelo paciente.


Subject(s)
Humans , Male , Adult , Chemical and Drug Induced Liver Injury/diagnosis , Chemical and Drug Induced Liver Injury/rehabilitation , Anabolic Agents/adverse effects , Androgens/adverse effects , Pruritus/chemically induced , Cholestasis/chemically induced , Renal Dialysis , Renal Insufficiency/chemically induced , Renal Insufficiency/therapy , Jaundice/chemically induced
17.
Acta fisiátrica ; 25(3)set. 2018.
Article in English, Portuguese | LILACS | ID: biblio-999736

ABSTRACT

Níveis de testosterona sérica já foram relacionados a piora de fatores hematológicos, função e envelhecimento vascular, contribuindo potencialmente para formação de trombos. Com o envelhecimento, dados epidemiológicos mostram declínio dos níveis de testosterona, prejuízo da função vascular e aumento das incidências de doenças vasculares, como o AVE. Objetivo: Descrever estudos que abordaram a potencial relação dos níveis de testosterona com a prevenção, apresentação clínica e prognóstico do AVE. Métodos: Uma pesquisa e seleção de artigos foi conduzida em três diferentes bases de dados (MEDLINE, SCIELO, LILACS) utilizando termos relacionados a testosterona e AVE (inglês e português), filtrada para estudos em humanos. Apenas estudos que abordaram algum aspecto da relação entre testosterona e AVE foram incluídos para discussão no presente estudo. Resultados: A busca resultou em 12 estudos relevantes para análise e discussão (7 observacionais, 3 transversais, 2 experimentais). Estudos observacionais verificaram um papel protetor da testosterona na incidência de AVE. Estudos transversais verificaram alterações endocrinológicas, como o hipogonadismo, na fase aguda do AVE, bem como melhor apresentação clínica (gravidade, tamanho da lesão). Estudos experimentais controlados verificaram benefícios clínicos e funcionais da suplementação de testosterona em pacientes em reabilitação. Conclusão: Apesar dos potenciais diversos benefícios destacados de níveis mais altos de testosterona no AVE, mais estudos que abordem de forma sistematizada o papel da testosterona em aspectos preventivos, de apresentação clínica, e de reabilitação e prognóstico serão bem vindos, para melhor manejo e otimização do tratamento do AVE.


Serum testosterone levels have already been related to endothelial function, vascular aging and hemathological factors, possibly contributing to thrombus formation. As aging progresses, epidemiological data shows declining testosterone levels, impaired vascular function and an increasing incidence of vascular diseases like stroke. Objective: The aim of present paper is to describe studies with a possible relation of testosterone levels with stroke prevention, clinical presentation, and prognosis. Methods: A research and selection of articles, filtering for humans studies only, was conducted in three different eletronic scientific databases, (MEDLINE, SCIELO, LILACS), using related and registered terms (english and portuguese) about "stroke" and "testosterone". Only studies that encompasses the role of testosterone in stroke and its different clinical aspects were included in the present review. Results: The search retrieved 12 relevant studies for analysis and discussion relating testosterone and stroke (7 observational, 3 cross sectional, 2 experimental). Observational studies verified a preventive role of testosterone levels on stroke incidence, cross-sectional studies verified endocrinologial alterations like hypogonadism on acute stroke phase and better clinical presentation (severity, brain lesion size). Experimental controled studies observed clinical benefits of testosterone supplementation in rehabilitation patients. Conclusion: Despite the potential benefits of higher levels of testosterne in stroke spectrum, more studies that systematically aproach the role of testosterone in stroke prevention, severity, clinical features, prognosis, rehabilitation and mortality will be welcome to better elaborate future medical management and otimization in stroke spectrum.


Subject(s)
Humans , Testosterone/blood , Stroke/prevention & control , Rehabilitation , Androgens
18.
Rev. argent. endocrinol. metab ; 55(2): 41-50, jun. 2018. graf
Article in Spanish | LILACS | ID: biblio-1041735

ABSTRACT

RESUMEN Diversos estudios bioquímicos adicionales a la evaluación de Testosterona total (TT), biodisponible (Tbio) y libre (TL) han sido realizados a los efectos que pudieran resultar de mayor utilidad para el diagnóstico de patologías concomitantes en el SOP, entre otros. En la hormona anti Mülleriana, cuando la concentración supera a los 3,0 ng/ml existen evidencias de que el 79% de las mismas pueden ser identificadas correctamente como SOP. El Antígeno Prostático Específico (PSA), marcador de singular importancia en pacientes con cáncer de Próstata, con técnicas ultrasensibles ha podido ser detectado en más del 50% en mujeres. En un grupo de pacientes con SOP, los niveles circulantes de PSA fueron significativamente mayores que en las mujeres sin SOP. El Kiss-1 aislado de la placenta y demostrado en otros tejidos, presenta niveles aumentados que correlacionan con la LH, TT, TL y resistencia a la insulina (RI) en adolescentes con SOP versus adolescentes sin SOP, sugiriendo que el Kiss-1 podría estar involucrado en el desarrollo del SOP en estas pacientes. Algunas pacientes con SOP están asociadas a patologías relevantes, de las cuales han sido comunicadas el aumento del BMI, mayor grado de dislipemia, adiposidad central, RI y Síndrome Metabólico (SMe). En las pacientes con un fenotipo clásico (hiperandrogenismo, alteración del ciclo menstrual y ovarios poliquísticos), estas patologías son de mayor frecuencia y severidad que en los otros fenotipos, particularmente aquellos sin hiperandrogenismo. Otras determinaciones como TNFα, interleuquinas, test de tolerancia a la glucosa, ApoB, partículas pequeñas de LDL e Inhibidor del Activador del Plasminógeno-1 han sido comunicados que podrían ser de utilidad para tener mayor sensibilidad en la definición de patología concomitantes en el SOP. Actualmente se ha comenzado a evaluar otros marcadores como el Fetuin-A; Quemerina, Nesfatina-1, Neopterina y Endocannabinoides, cuyos resultados preliminares parecerían ser un aporte importante para evaluar SMe y RI en paciente con SOP y tratar de definir su prevalencia en los distintos fenotipos de esta patología.


ABSTRACT Several biochemical studies in addition to the evaluation of total Testosterone (TT), bioavailable (bioT) and free (FT) have been performed to the effects that could be of greater use for the diagnosis of concomitant pathologies in the PCOS, among others. The anti-Müllerian hormone whose concentration when exceeds 3.0 ng/ml, there is evidence that 79% of these patients can be correctly identified as PCOS. The Prostate-Specific Antigen (PSA), a marker of singular importance in patients with prostate cancer, with ultra-sensitive techniques, has been detected in more than 50% of women. In a group of patients with PCOS, circulating levels of PSA are significantly higher than in women without PCOS. The Kiss-1 isolated from the placenta and demonstrated in other tissues, has increased levels that correlate with LH, TT, TL and insulin resistance (IR) in adolescents with PCOS respect to adolescents without PCOS, suggesting that Kiss-1 could be involved in the development of the PCOS in these patients. In some patients with PCOS, they are associated with relevant pathologies, of which the increase in BMI, higher degree of dyslipidemia, central adiposity, IR and Metabolic Syndrome (MeS) have been reported. Those that show a classic phenotype (hyperandrogenism, alteration of the menstrual cycle and polycystic ovaries) these characteristics are of greater frequency and severity than in the other phenotypes, particularly those without hyperandrogenism. Other determinations such as TNFα, interleukins, glucose tolerance test, ApoB, small particles of LDL and Plasminogen Activator Inhibitor-1 have been reported that could be useful to have greater sensitivity in the definition of concomitant pathology in the PCOS. Currently, other markers such as Fetuin-A, Chemerin, Nesfatin-1 Neopterin and Endocannabinoids have been evaluated. The preliminary results suggest to be an important contribution to define MeS and IR in patient with PCOS and to try to determine its prevalence in the different phenotypes of this pathology.


Subject(s)
Humans , Female , Polycystic Ovary Syndrome/complications , Polycystic Ovary Syndrome/physiopathology , Biomarkers/analysis , Polycystic Ovary Syndrome/blood , Metabolic Syndrome/complications , Dyslipidemias/complications , Androgens/analysis
19.
Article in English | WPRIM | ID: wpr-772963

ABSTRACT

Androgen receptor (AR) is a ligand-activated transcription factor that plays a pivotal role in the development and progression of many severe diseases such as prostate cancer, muscle atrophy, and osteoporosis. Binding of ligands to AR triggers the conformational changes in AR that may affect the recruitment of coactivators and downstream response of AR signaling pathway. Therefore, AR ligands have great potential to treat these diseases. In this study, we searched for novel AR ligands by performing a docking-based virtual screening (VS) on the basis of the crystal structure of the AR ligand binding domain (LBD) in complex with its agonist. A total of 58 structurally diverse compounds were selected and subjected to LBD affinity assay, with five of them (HBP1-3, HBP1-17, HBP1-38, HBP1-51, and HBP1-58) exhibiting strong binding to AR-LBD. The IC values of HBP1-51 and HBP1-58 are 3.96 µM and 4.92 µM, respectively, which are even lower than that of enzalutamide (Enz, IC = 13.87 µM), a marketed second-generation AR antagonist. Further bioactivity assays suggest that HBP1-51 is an AR agonist, whereas HBP1-58 is an AR antagonist. In addition, molecular dynamics (MD) simulations and principal components analysis (PCA) were carried out to reveal the binding principle of the newly-identified AR ligands toward AR. Our modeling results indicate that the conformational changes of helix 12 induced by the bindings of antagonist and agonist are visibly different. In summary, the current study provides a highly efficient way to discover novel AR ligands, which could serve as the starting point for development of new therapeutics for AR-related diseases.


Subject(s)
Androgen Receptor Antagonists , Pharmacology , Androgens , Metabolism , Pharmacology , Biological Assay , Cell Line, Tumor , Drug Discovery , Methods , Humans , Ligands , Male , Molecular Docking Simulation , Molecular Dynamics Simulation , Phenylthiohydantoin , Pharmacology , Principal Component Analysis , Prostatic Neoplasms , Drug Therapy , Protein Binding , Physiology , Protein Conformation , Receptors, Androgen , Metabolism
20.
National Journal of Andrology ; (12): 311-316, 2018.
Article in Chinese | WPRIM | ID: wpr-689759

ABSTRACT

<p><b>Objective</b>To investigate the relationship of the levels of serum androgens with lipid metabolism in middle-aged and elderly men in Zunyi, Guizhou.</p><p><b>METHODS</b>Using the stratified cluster sampling method, we conducted a questionnaire investigation and physical examinations among 437 men in Zunyi City. We divided the subjects into a middle-aged (40-64 [53.20 ± 7.41] years, n = 269) and an elderly group (=≥65 [70.63 ± 4.66] years, n = 168) and collected fasting elbow venous blood samples from them for measuring the levels of total testosterone (TT), sex hormone-binding globulin (SHBG), luteinizing hormone (LH), total cholesterol (TCH), triglyceride (TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL), calculated free testosterone (cFT), free testosterone index (FTI), and testosterone secretion index (TSI).</p><p><b>RESULTS</b>Compared with the elderly group, the middle-aged males showed significantly lower SHBG, LH, HDL and LDL, and higher cFT, FTI, TSI, TG and TCH (all P < 0.05). TT and SHBG were negatively correlated with TG, TCH, HDL and LDL, while cFT was positively correlated with TCH, and so was FTI with TG, TCH with LDL, and TSI with TCH, HDL and LDL (all P < 0.05), but LH was negatively correlated with TG, TCH and LDL (all P < 0.05). Multivariate linear regression analysis showed that TT and SHBG were negatively correlated with TG, TCH, HDL and LDL, and so was LH with TCH, HDL and LDL (all P < 0.05).</p><p><b>CONCLUSIONS</b>In the middle-aged and elderly men in Zunyi, low concentrations of TT, SHBG and LH were associated with the increased risk of high-TCH and -LDL dyslipidemia, low concentrations of TT and SHBG with that of high-TG dyslipidemia, while high concentrations of TT, SHBG and LH with that of low-HDL dyslipidemia.</p>


Subject(s)
Adult , Aged , Androgens , Blood , China , Cholesterol , Blood , Dyslipidemias , Humans , Lipid Metabolism , Lipoproteins, HDL , Blood , Lipoproteins, LDL , Blood , Luteinizing Hormone , Male , Middle Aged , Multivariate Analysis , Sex Hormone-Binding Globulin , Testosterone , Blood , Triglycerides , Blood
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