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Testosterone is a steroid hormone from the androgen group. In mammals, testosterone is primarily secreted in the testes of males and the ovaries of females, although small amounts are also secreted by the adrenal glands
High status gestures assumed to stimulate psychological, physiological processes

High status gestures assumed to stimulate psychological, physiological processes

Hands pressed to the hips or perhaps leaning back with arms crossed behind the head are typical poses of power. Referred to power poses or high status gestures in technical jargon, they are assumed to stimulate both psychological and physiological processes. [More]
Study suggests link between androgens, atherosclerosis and obesity in females

Study suggests link between androgens, atherosclerosis and obesity in females

While testosterone replacement therapies may be controversial in males, new research in The FASEB Journal may extend this controversy to females too. That's because research involving mice, appearing in the April 2015 issue, suggests that there is an association between low levels of androgens (which includes testosterone), and atherosclerosis and obesity in females. [More]
Idiopathic central precocious puberty on the rise in boys

Idiopathic central precocious puberty on the rise in boys

About three-quarters of cases of central precocious puberty in boys have no identifiable cause, say researchers. [More]
Research opens door to new prostate cancer treatment

Research opens door to new prostate cancer treatment

Researchers from the Centenary Institute’s Origins of Cancer Program have discovered new links between nutrition and prostate cancer. [More]
Endo announces commercial availability of NATESTO nasal gel for men with hypogonadism

Endo announces commercial availability of NATESTO nasal gel for men with hypogonadism

Endo Pharmaceuticals Inc., a subsidiary of Endo International plc (NASDAQ: ENDP) (TSX: ENL), announced today the commercial availability of NATESTO (testosterone nasal gel), the first and only nasal gel for testosterone replacement therapy in adult males diagnosed with hypogonadism. [More]
Nomogram aids management of boys with constitutional delay in growth and puberty

Nomogram aids management of boys with constitutional delay in growth and puberty

A puberty nomogram is better than the classical criteria for identifying boys with constitutional delay in growth and puberty, report researchers. [More]
Testosterone, estrogen raise men's risk of heart disease

Testosterone, estrogen raise men's risk of heart disease

Why men have more heart disease than premenopausal women has been unclear, but a new study shows that the sex hormones testosterone and estrogen alter cardiovascular risk factors in a way that raises a man's risk of heart disease. [More]
New study shows positive effects of gastric bypass surgery on obese adolescents

New study shows positive effects of gastric bypass surgery on obese adolescents

The skeletons of obese adolescents are usually more dense than those of normal weight teens, but after gastric bypass surgery, most return to normal density within two years, a new study finds. [More]
Men with borderline testosterone levels have higher rates of depression, new research finds

Men with borderline testosterone levels have higher rates of depression, new research finds

Men with borderline testosterone levels have higher rates of depression and depressive symptoms than the general population, new research finds. [More]
Letrozole helps restore fertility in obese, infertile men

Letrozole helps restore fertility in obese, infertile men

A letrozole pill once a week restored fertility in obese, infertile men and led to their partners giving birth to two full-term, healthy babies, according to a new study from Canada. The results will be presented Thursday at the Endocrine Society's 97th annual meeting in San Diego. [More]
Serum testosterone may decline due to decreased sexual activity and desire in older men

Serum testosterone may decline due to decreased sexual activity and desire in older men

In older men, decreased sexual activity and desire, not erectile dysfunction, may cause serum testosterone to decline, a new study from Australia finds. The results will be presented Saturday March 7, at ENDO 2015, the annual meeting of the Endocrine Society, in San Diego. [More]

Phase 3 trial results show that new testosterone nasal gel is effective and practical

A new testosterone nasal gel raises men's low testosterone levels to normal, with few side effects, according to the results of a phase 3 clinical trial to be presented Saturday at the Endocrine Society's 97th annual meeting in San Diego. [More]
AR-V7 status does not affect response to taxane chemotherapy in patients with mCRPC

AR-V7 status does not affect response to taxane chemotherapy in patients with mCRPC

Findings from a small prospective study suggest that androgen receptor V7 (or AR-V7) status does not significantly affect response to taxane chemotherapy in men with metastatic castration-resistant prostate cancer (mCRPC). Treatment outcomes were largely similar for the 17 patients with AR-V7-positive prostate cancer and the 20 patients with AR-V7-negative disease included in this analysis. [More]
Adult survivors of childhood cancer at risk for pituitary hormone deficiencies

Adult survivors of childhood cancer at risk for pituitary hormone deficiencies

Decades after undergoing cranial irradiation for childhood cancer, St. Jude Children's Research Hospital investigators found that adult survivors of pediatric cancer remain at risk for pituitary hormone deficiencies that may diminish their health and quality of life. [More]
Nomogram aids management of boys with constitutional delay in growth and puberty

Nomogram aids management of boys with constitutional delay in growth and puberty

A puberty nomogram is better than the classical criteria for identifying boys with constitutional delay in growth and puberty, report researchers. [More]
Study finds no evidence that testosterone replacement therapy increases cardiovascular risk

Study finds no evidence that testosterone replacement therapy increases cardiovascular risk

Fears of a link between testosterone replacement therapy and cardiovascular risk are misplaced, according to a review published in this month's Mayo Clinic Proceedings. The therapy has come under widespread scrutiny in recent months, including by a federal Food and Drug Administration panel convened last fall. [More]
Androgen receptor in prostate cancer cells can activate different gene set when bound to antiandrogens

Androgen receptor in prostate cancer cells can activate different gene set when bound to antiandrogens

The androgen receptor in prostate cancer cells can activate different sets of genes depending on whether it binds with an androgen hormone or an antiandrogen drug, according to a new study led by researchers at The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute. [More]
Study: Prostate cancer drug stabilizes memory loss for a year in women with Alzheimer's disease

Study: Prostate cancer drug stabilizes memory loss for a year in women with Alzheimer's disease

Women with Alzheimer's disease showed stable cognition for a year when a drug that is more commonly used to treat advanced prostate cancer was added to their drug regimen, according to a new study from researchers at the University of Wisconsin-Madison. [More]

Fast HPLC screening methods used to detect steroids

As the importance of steroids in the regulation of bioprocesses has increased so has the demand for fast screening methods for their detection. HPLC is a highly regarded analytical technique for pharmaceutical applications due to its unrivalled analytical validation characteristics; including accuracy, precision, limit of detection, specificity, linearity and range, and ruggedness. [More]
Personal gender identity of every human being is reflected in the structure of brain networks

Personal gender identity of every human being is reflected in the structure of brain networks

Our sense of belonging to the male or female gender is an inherent component of the human identity perception. As a general rule, gender identity and physical sex coincide. If this is not the case, one refers to trans-identity or transsexuality. In a current study, brain researcher Georg S. Kanz of the University Clinic for Psychiatry and Psychotherapy of the MedUni Vienna was able to demonstrate that the very personal gender identity of every human being is reflected and verifiable in the cross-links between brain regions. [More]
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