Lipoprotein Lipase Activity and Blood Triglyceride Levels in Fetal and Newborn Rats

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Lipoprotein lipase activity in lung and heart was studied in fetal (17-22 days of gestation) and newborn rats from the day of birth until 30 days of age. Enzyme activity in epididymal, omental, and parametrial adipose tissue was tested after 18 days of age. Blood triglyceride levels were measured at all ages from 17 days in utero until 30 days after birth.


The triglyceridemia that starts in the immediate postnatal period and lasts for several days in the rat probably results from the combination of high fat intake and low clearing ability of the extrahepatic tissues.

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