[Effect of gestational diabetes on erythrocyte aggregation]

Area of Science:

• Obstetrics and Gynecology
• Hematology
• Pathophysiology

Context:

• Gestational diabetes mellitus (GDM) is a common pregnancy complication.
• Altered blood rheology may contribute to placental dysfunction in GDM.
• Erythrocyte aggregation is a key determinant of blood viscosity.

Purpose:

• To investigate erythrocyte aggregation and blood viscosity in the third trimester of pregnancy with GDM.
• To compare rheological parameters between GDM and normal pregnancy.
• To explore the relationship between fibrinogen levels and erythrocyte aggregation in GDM.

Summary:

• Blood viscosity at low shear rates was significantly higher in 20 women with GDM compared to 40 normal pregnant women.
• Mean corrected viscosity values at 0.11, 0.54, and 0.99 sec-1 were elevated in GDM.
• Mean fibrinogen levels were significantly higher in GDM patients (408.8 mg/dl) than in normal controls (313.3 mg/dl).

Impact:

• Increased erythrocyte aggregation in GDM is linked to elevated fibrinogen.
• These rheological changes may induce placental microcirculatory disturbances and hypoxia.
• Hypoxia could be a trigger for cytotrophoblastic cell proliferation, a characteristic finding in diabetic placentas.