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单词 pepsin
释义

pepsinn.

Brit. /ˈpɛpsɪn/, U.S. /ˈpɛps(ə)n/
Forms: 1800s pepsine, 1800s– pepsin.
Origin: A borrowing from German. Etymon: German Pepsin.
Etymology: < German Pepsin (T. Schwann 1836, in Ann. der Physik u. Chem. 38 362) < ancient Greek πέψις digestion ( < πέσσειν (Attic πέττειν ) to cook, digest (see pepon n.) + -σις -sis suffix; compare Sanskrit pac- to cook) + German -in -in suffix1. Compare French pepsine (1839; < German), Italian pepsina (1856).With the form pepsine compare French pepsine ; compare -ine suffix5.
Biochemistry.
The chief digestive enzyme of the stomach, an endopeptidase which splits proteins into polypeptides able to be absorbed by the body, and which was formerly used medicinally to treat indigestion, etc.Pepsin is now regarded as a group of several related enzymes each designated by a letter, e.g. pepsin B.
ΘΚΠ
the world > life > the body > secretory organs > secretion > gastric juice > [noun] > substance in
pepsin1844
pepsinogen1877
rennin1889
propeptone1890
thrombogen1890
intrinsic factor1930
1844 R. Dunglison Dict. Med. Sci. (ed. 4) Pepsin, a peculiar matter, which, in combination with the gastric juices, is considered to form the proper digestive solvent.
1886 St. Stephen's Rev. 13 Mar. 12/1 As good as a pepsine pill before dinner.
1920 Amer. Woman Aug. 13/3 (advt.) Pepsin must be activated, and the usual agent is an acid harmful to the teeth.
1955 K. Hutton & A. Swallow Chem. for Gen. Sci. xii. 175 Some common enzymes are ptyalin in saliva, pepsin and rennin in the gastric juice.
1998 Biochem. Jrnl. 335 481 The gastric aspartic proteinases (pepsin A, pepsin B, gastricsin and chymosin) are synthesized in the gastric mucosa.

Derivatives

pepsiniferous adj. Obsolete rare secreting pepsin.Apparently only attested in dictionaries or glossaries.
ΚΠ
1890 Cent. Dict. Pepsiniferous, producing pepsin.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).
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n.1844
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