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Glucose utilization by fetal muscles during maternal fasting
S Hauguel1, A Leturque, M Gilbert
1Centre de Recherches sur la Nutrition, C.N.R.S., Meudon, France.
Reproduction, Nutrition, Developpement
|January 1, 1988
Summary
Fetal muscle glucose utilization differs significantly between species, being higher in rats than rabbits. Maternal fasting reduces glucose use in rat fetuses but not in rabbit fetuses.
Area of Science:
- Perinatal physiology
- Comparative fetal metabolism
- In utero development
Background:
- Glucose utilization by fetal muscles is crucial for growth and development.
- Significant interspecies variations exist in fetal metabolic processes.
- Understanding these differences is key to comprehending fetal adaptation to maternal nutritional status.
Purpose of the Study:
- To investigate interspecies differences in fetal muscle glucose utilization.
- To examine the impact of maternal fasting on fetal glucose metabolism in different species.
Main Methods:
- Comparative analysis of glucose uptake in fetal rat and rabbit heart and hindlimb muscles.
- Assessment of metabolic responses under fed and fasted maternal conditions.
Main Results:
- Fetal rat muscles exhibited a 5-fold higher glucose utilization compared to fetal rabbit muscles in the fed state.
- Maternal fasting led to a significant decrease in glucose utilization in fetal rat muscles.
- Maternal fasting did not alter glucose utilization in fetal rabbit muscles.
Conclusions:
- Fetal muscle glucose metabolism shows marked interspecies variability.
- The fetal rabbit exhibits a distinct metabolic adaptation to maternal fasting compared to the fetal rat.