OBJECTIVES The aim of this study was to assess the relationship between sex hormones and natriuretic peptide levels in community-based adults. BACKGROUND Women have higher circulating natriuretic peptide concentrations than men, but the mechanisms for these sex-related differences and the impact of hormone therapy are unclear. Experimental studies suggest that androgens may suppress natriuret...

BACKGROUND Studies relating long-term exposure to persistent organochlorine pollutants (POPs) with endocrine activities (endocrine disrupting chemicals) on circulating levels of steroid hormones have been limited to a small number of hormones and reported conflicting results. OBJECTIVE We examined the relationship between serum concentrations of dehydroepiandrosterone, dehydroepiandrosterone ...

To summarize the maintenance of homeostasis in our body terms signal transduction, there are two major axes: autonomic nervous system and hormones. The system, one peripheral nerves, secretes neurotransmitters such as norepinephrine acetylcholine to affect target organs quickly efficiently. Hormones can be viewed signals that trigger larger changes DNA level after they secreted into blood reach...

Case A case of Leydig cell tumor, associated with azoospermia, is presented. Outcome The levels of sex hormones obviously were decreased, including luteinizing hormone (LH) and follicle-stimulating hormone (FSH), with elevated testosterone. Computed tomography revealed no adrenal gland tumor, but a significant calcification in the right scrotal content was observed. He received a right radica...

This study sought to investigate late-onset hypogonadism (LOH) in old and middle-aged males in Shanghai communities, using symptom score evaluation systems and measurements of sex hormone levels. One thousand cases of males aged 40-70 years were investigated. The aging male symptoms (AMS) scale and androgen deficiency in aging males (ADAM) questionnaire were used at the beginning of the investi...

Measuring hormone levels multiple times on the same individual across different life stages or treatments can facilitate our understanding of hormonal regulation of physiological and behavioral events. The conventional method of hormone measurement requires blood sampling, which is potentially lethal to small individuals. In fishes, there is an alternative non-invasive method of hormone measure...

Plasma levels of luteinizing hormone, sex hormone binding globulin, and antithrombin III were measured in pre- and postmenopausal breast cancer patients receiving adjuvant combination chemotherapy or combination chemotherapy and long-term tamoxifen therapy. The aim was to determine the estrogen-like effects of tamoxifen. The premenopausal patients had received tamoxifen for between 434 and 2592...

BACKGROUND AND PURPOSE The aim of this study was to determine if circulating levels of pituitary hormones are altered by stroke and, if so, whether these alterations offer insight into specific neurochemical pathways in the region of the central nervous system injury. METHODS Twenty-eight consecutive postmenopausal women undergoing computed tomographic imaging of the brain for evaluation of c...

The liver is involved in the synthesis and metabolism of many kinds of hormones, various abnormalities hormone levels are found in advanced liver disease. For example the liver is, extremely sensitive to changes in insulin or glucagon levels. The liver is the primary organ of iron storage is frequently involved, diabetes is common in patients with iron overload and may be seen in cirrhosis. Chr...