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Studies on the hypertriglyceridemia in pregnant rats
Acta Biologica Et Medica Germanica
|January 1, 1982
Summary
Pregnancy increases plasma triglyceride flux by 65% in rats. This is due to reduced removal by extrahepatic tissues, not abnormal VLDL or lipase activity, during late gestation.
Area of Science:
- Biochemistry
- Physiology
- Reproductive Biology
Background:
- Hypertriglyceridemia is a common metabolic alteration during pregnancy.
- Understanding the underlying mechanisms is crucial for maternal and fetal health.
Purpose of the Study:
- To investigate the mechanism of hypertriglyceridemia in pregnant rats.
- To determine the role of VLDL triglyceride metabolism and removal in late gestation.
Main Methods:
- Utilized radiolabeled VLDL triglyceride injection in pregnant and non-pregnant rats.
- Compared plasma triglyceride disappearance rates between groups.
- Assessed VLDL triglyceride clearance and extrahepatic tissue removal capacity.
Main Results:
- Plasma triglyceride flux increased by 65% in late gestation.
- Labeled VLDL triglyceride from pregnant rats cleared normally in non-pregnant rats.
- Labeled VLDL triglyceride from non-pregnant rats showed delayed clearance in pregnant rats.
Conclusions:
- Delayed plasma triglyceride disappearance in pregnant rats is not due to abnormal VLDL or reduced lipase affinity.
- The primary cause is a decreased removal capacity of plasma triglycerides by extrahepatic tissues during late gestation.