News tagged with hormone

Related topics: breast cancer · women · plants · estrogen · protein

Approval of test to diagnose adrenal cancer

A new analytical test has been launched in the UK that provides sensitive, specific and efficient predictive analysis of a rare form of cancer from a simple urine sample. The ACC steroid analysis service will be marketed ...

Sep 21, 2016
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Stress hormones could undermine breast cancer therapy

Recently, researchers have discovered that the hormone progesterone, an ingredient in contraceptives and menopausal hormone replacement therapies, might stimulate the growth of breast cancer cells that are resistant to anti-estrogen ...

Jun 22, 2015
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Hormone

Hormones (from Greek ὁρμή - "impetus") are chemicals released by cells that affect cells in other parts of the body. Only a small amount of hormone is required to alter cell metabolism. It is essentially a chemical messenger that transports a signal from one cell to another. All multicellular organisms produce hormones; plant hormones are also called phytohormones. Hormones in animals are often transported in the blood. Cells respond to a hormone when they express a specific receptor for that hormone. The hormone binds to the receptor protein, resulting in the activation of a signal transduction mechanism that ultimately leads to cell type-specific responses.

Endocrine hormone molecules are secreted (released) directly into the bloodstream, while exocrine hormones (or ectohormones) are secreted directly into a duct, and from the duct they either flow into the bloodstream or they flow from cell to cell by diffusion in a process known as paracrine signalling.

This text uses material from Wikipedia, licensed under CC BY-SA

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