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Tag: "testosterone" at biology news

Olfactory system detects pheromones that control reproduction

...rols gonad function, including spermatogenesis and testosterone production. "One of the classical dogmas is that LHRH neurons receive inputs from the vomeronasal system. For example, textbooks on reproductive physiology say that pheromonal modulation of reproductive behavior depends on these connections," said D...

MWG Biotech expands siMAX?siRNA portfolio with new scales, lengths and design tools

...lear hormone receptor." Hormones like estrogen and testosterone attach to these receptors, which in turn attach to genes in cell nuclei to switch the genes on or off. Nuclear hormone receptors are found in all animals, including flies and humans, and are linked to maturation. "So concluding that nuclear receptor...

Scientists find a maturity gene in fly

...lear hormone receptor." Hormones like estrogen and testosterone attach to these receptors, which in turn attach to genes in cell nuclei to switch the genes on or off. Nuclear hormone receptors are found in all animals, including flies and humans, and are linked to maturation. "So concluding that nuclear receptor...

By creating molecular bridge, scientists change function of a protein

...eptor in a step-wise fashion, Zhao said. They used testosterone and progesterone to build the bridge. The receptor was gradually altered to accept one steroid, then another, until accepting the desired one -- corticosterone, a potent glucocoticoid. In total, Zhao and Chen did four rounds of random mutagenesis an...

Estrogen-like Component of Plastic Stimulates Growth of Certain Prostate Cancer Cells

... cases of prostate cancer depend on androgens like testosterone fortumor growth and cancer cell proliferation, sai...mon treatment for prostate cancer includeslimiting testosterone synthesis. Patients with mutated androgenreceptors may not respond to this therapy and according to ...

Scientists develop new color-coded test for protein folding

Every protein--from albumin to testosterone (Ed : testosterone isn't a protein, it's a steroid) --is folded into a unique, three-dimensional shape that allows it t...

A gene's first 'kiss' sets off that affair known as puberty

...the testes and ovaries to produce the sex hormones testosterone and estradiol, the culprits responsible for the physical changes and emotional baggage of male and female puberty, respectively. "We now have very good evidence that the GPR54 gene and its switch, the kisspeptin protein molecule produced by KiSS-1, ...

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