News tagged with hormone

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

The decades-long quest to cure cancer

US President Barack Obama's announcement of a "moonshot" bid to cure cancer, continues a centuries-long quest to defeat a disease which kills over eight million people every year.

Jan 13, 2016
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DHEA improves vaginal discomfort after menopause

A new phase III trial with positive results is taking intravaginal DHEA a step closer to governmental approval. The formulation could provide women who cannot or do not wish to use intravaginal estrogen with an effective ...

Jan 05, 2016
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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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