“oxytocin”的概念、定义、翻译、参考文献-科学参考

oxytocin

Chemistry

A hormone that is produced in the body under various circumstances, resulting in noticeable effects on behaviour. It is a peptide made up of nine amino acids in the order: cysteine – tyrosine – isoleucine – glutamine – asparagine – cysteine – proline – leucine – glycine – amide, with a disulphide bridge joining the cysteine moieties. Oxytocin was discovered in 1906 and was the first hormone to have its amino acid sequence determined and to be synthesized, with both being achieved in the early 1950s.

Biology

A hormone, produced by birds and mammals, that in mammals causes both contraction of smooth muscle in the uterus during birth and expulsion of milk from the mammary glands during suckling. Like antidiuretic hormone, oxytocin is produced in the neurosecretory cells of the hypothalamus (see neurosecretion) but is stored and secreted by the posterior pituitary gland. In some species the high circulating levels of oxytocin immediately after birth are associated with a critical period for the mother’s bonding with her newborn young. See also neurophysin.

单词	oxytocin
释义	oxytocin Chemistry A hormone that is produced in the body under various circumstances, resulting in noticeable effects on behaviour. It is a peptide made up of nine amino acids in the order: cysteine – tyrosine – isoleucine – glutamine – asparagine – cysteine – proline – leucine – glycine – amide, with a disulphide bridge joining the cysteine moieties. Oxytocin was discovered in 1906 and was the first hormone to have its amino acid sequence determined and to be synthesized, with both being achieved in the early 1950s. Biology A hormone, produced by birds and mammals, that in mammals causes both contraction of smooth muscle in the uterus during birth and expulsion of milk from the mammary glands during suckling. Like antidiuretic hormone, oxytocin is produced in the neurosecretory cells of the hypothalamus (see neurosecretion) but is stored and secreted by the posterior pituitary gland. In some species the high circulating levels of oxytocin immediately after birth are associated with a critical period for the mother’s bonding with her newborn young. See also neurophysin.
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