Glucose-dependent leucocyte activation in familial hypercholesterolemia

Area of Science:

• Cardiovascular Research
• Metabolic Disorders
• Immunology

Background:

• Leukocyte activation is crucial in atherosclerosis development.
• Postprandial states are linked to increased leukocyte activation in various disorders.
• Familial hypercholesterolemia (FH) is a genetic condition predisposing to cardiovascular disease.

Purpose of the Study:

• To investigate the effect of post-oral glucose tolerance test (OGTT) hyperglycemia on leukocyte activation in FH patients.
• To compare leukocyte activation markers between FH patients and healthy controls after an OGTT.

Main Methods:

• Heterozygous FH patients and healthy volunteers underwent an OGTT.
• Leukocyte activation markers (CD11b, CD66b) were measured using flow cytometry.
• Post-OGTT glucose excursions and leukocyte activation were analyzed using AUC and dAUC, with repeated measures analysis for time-dependent profiles.

Main Results:

• FH patients exhibited significantly higher post-OGTT glucose levels than healthy controls, irrespective of statin use.
• FH patients on statins had slightly higher HbA1c levels.
• Post-OGTT hyperglycemia was observed in FH patients.

Conclusions:

• FH patients demonstrate impaired post-OGTT glucose regulation compared to healthy individuals.
• Persistent post-OGTT monocyte activation in FH patients may be linked to hyperglycemia.
• This persistent activation could be a contributing factor to cardiovascular disease progression in FH.