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Human androgen deficiency： insights gained from androgen receptor knockout mouse models

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Asian Journal of Andrology 2014年第2期16卷 169-177,I0006页

作者： Kesha Rana Rachel A Davey Jeffrey D Zajac Department of Medicine Austin Health University of Melbourne Heidelberg Victoria Australia.

The mechanism of androgen action is complex. Recently, significant advances have been made into our understanding of how androgens act via the androgen receptor （AR） through the use of genetically modified mouse models. A number of global and tissue-specific AR knockout （ARKO） models have been generated using the Cre-loxP system which allows tissue- and/or cell-specific deletion. These ARKO models have examined a number of sites of androgen action including the cardiovascular system, the immune and hemopoetic system, bone, muscle, adipose tissue, the prostate and the brain. This review focuses on the insights that have been gained into human androgen deficiency through the use of ARKO mouse models at each of these sites of action, and highlights the strengths and limitations of these Cre-loxP mouse models that should be considered to ensure accurate interpretation of the phenotype.

关键词： androgen receptor androgen receptor knockout mouse model androgen deficiency

Impact of a physician-supervised exercise-nutrition program with testosterone substitution in partial androgen-deficient middle-aged obese men

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Journal of Geriatric Cardiology 2011年第4期8卷 201-206页

作者： Ernst R Schwarz Robert D Willix Jr Cenegenics Education and Research Foundation Las Vegas and Heart Institute of Southern CaliforniaBeverly Hills348 S Oakhurst DrBeverly HillsCA 90212USA

Background Partial androgen deficiency syndrome in the aging male is associated with signs of aging such as a development of abdominal obesity,sexual dysfunction,increase body fat,weight gain and the development of cardiac *** We assessed the outcome of a commercially available physician supervised nutrition and exercise program with concomitant testosterone replacement therapy in middle age obese men with partial androgen deficiency in order to reduce cardiac risks *** Fifty-six self referred men without diabetes mellitus,hypertension,or cardiovascular disease(ages 52.3±7.8 years)were randomly selected from a large *** weight,body fat composition,fasting glucose,hemoglobin A1c and fasting lipid levels,as well as free and total testosterone levels were *** patients were assessed and followed 6–18 months after initiation of the *** program consisted of a low glycemic load balanced nutrition diet,a recommended structured daily exercise program of 30–60 minutes,as well as once to twice weekly intramuscular testosterone injections(113.0±27.8 mg).Results At follow up,weight was reduced from 233.9±30.0 pounds(lbs)to 221.3±25.1 lbs(Pandrogen deficiency appeared safe and might have promoted the effects of a weight reduction diet and daily exercise program as long as an adequate physician supervision and follow up was *** combination therapy significantly reduced coronary risk factors such as glucose intolerance and hyperlipidemia.

关键词： aging heart disease androgen deficiency testosterone

Effect of testosterone replacement treatment on constitutional and sexual symptoms in type 2 diabetic men. need for rules

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Asian Journal of Andrology 2015年第2期17卷 217-218页

作者： Fotios Dimitriadis Nikolaos Sofikitis Department of Urology University of Ioannina Medical School Ioannina Greece.

In a recent publication, Gianatti and colleagues investigated the effect of testosterone treatment in obese, aging men with type 2 diabetes （T2D） with mild to moderate symptoms, a modest reduction in testosterone levels, mild to moderate aging male symptoms, and erectile dysfunction？ The authors could not show any significant improvement in constitutional or sexual symptoms in this group of men. This randomized double-blind, parallel, and placebo-controlled trial among other critically emphasizes the increased testosterone prescriptions worldwide and together with other corroborating or contradictory studies awakes the need for guidelines in the androgen replacement treatment.

关键词： QUALITY-OF-LIFE DEPRESSIVE SYMPTOMS androgen deficiency METABOLIC SYNDROME HYPOGONADAL MEN ADULT MEN THERAPY METAANALYSIS UNDECANOATE DYSFUNCTION

Testosterone replacement therapy： dilemmas and challenges in China and Asia

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Asian Journal of Andrology 2018年第2期20卷 149-151页

作者： Qi An Yi-Qun Gu Graduate School Peking Union Medical College Beijing 100730 China Nationa Health and Family Planning Key Laboratory of Male Reproductive Health National Research Institute for Family Planning Beijing 100081 China

Late-onset hypogonadism （LOH） has been described as a clinical syndrome comprising symptoms consistent with androgen deficiency and a circulating concentration of testosterone in the low-to-normal range in some middle-aged and elderly men. The presence of symptoms may affect the health and quality of life in aging men and it has become a hot spot in global medical research, diagnosis, and treatment in the recent years.

关键词： LATE-ONSET HYPOGONADISM CARDIOVASCULAR RISKS androgen deficiency MEN METAANALYSIS EVENTS AGE

Orchiectomy and letrozole differently affected synaptic plasticity and spatial memory in the hippocampus of male mice

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Orchiectomy and letrozole differently affected synaptic plas...