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Carbohydrate metabolism in fetuses with Rh alloimmunization
C Hubinont1, U Nicolini, N M Fisk
1RPMS, Institute of Obstetrics and Gynaecology, Queen Charlotte's and Chelsea Hospital, London, UK.
Fetal Diagnosis and Therapy
|July 1, 1993
Summary
Rh fetuses show altered glucose metabolism, with elevated glucose and fructosamine before treatment. Post-transfusion, hyperinsulinemia and low glucagon suggest a metabolic state similar to fetuses of diabetic mothers.
Area of Science:
- Perinatology
- Fetal Endocrinology
- Neonatal Metabolism
Background:
- Rh incompatibility can lead to fetal anemia and potential metabolic disturbances.
- Understanding fetal metabolic changes is crucial for managing Rh disease complications.
Purpose of the Study:
- To investigate glucose, insulin, glucagon, and fructosamine levels in Rh-affected fetuses.
- To compare metabolic profiles before and after intrauterine transfusions.
- To assess similarities with metabolic states in fetuses of diabetic mothers.
Main Methods:
- Plasma samples collected from control (n=34) and Rh-fetuses (n=22) before transfusions.
- Measurement of glucose, insulin, glucagon, and fructosamine concentrations.
- Statistical comparison between groups and over time points.
Main Results:
- Prior to treatment, Rh fetuses exhibited higher glucose, glucagon, and fructosamine levels than controls.
- Fetal insulin levels were not significantly different initially.
- After transfusion, Rh fetuses became hyperinsulinemic and had decreased glucagon, irrespective of gestational age correction.
Conclusions:
- Rh fetuses present with distinct metabolic alterations, including hyperglycemia and hyperinsulinemia.
- The observed metabolic milieu in Rh fetuses resembles that of fetuses from diabetic pregnancies.
- These findings highlight the complex endocrine-metabolic impact of Rh incompatibility.