News tagged with hormone

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

Gene linked to low IQ

(Medical Xpress)—Children with both a common gene variant and lower thyroid hormone levels, which occurs in approximately 4% of the population, are four times more likely to have a low IQ, according to ...

Mar 25, 2014
popularity 4.5 / 5 (4) | comments 1

Childhood abuse may impair weight-regulating hormones

Childhood abuse or neglect can lead to long-term hormone impairment that raises the risk of developing obesity, diabetes or other metabolic disorders in adulthood, according to a new study published in the Endocrine Society's ...

Mar 20, 2014
popularity 5 / 5 (1) | comments 0

The genetics of healthy ageing and cancer

We're living longer. That means that we're all at greater risk of cancer and we'll all suffer from bone loss. And for many of us, our final years will be difficult.

Mar 18, 2014
popularity 5 / 5 (1) | comments 0

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