Adiponectin multimer distribution in patients with familial combined hyperlipidemia

Area of Science:

• Endocrinology
• Cardiovascular Research
• Metabolic Syndrome

Background:

• Adiponectin, a hormone secreted by adipocytes, exists in various molecular weight forms.
• The high molecular weight (HMW) adiponectin is primarily associated with beneficial metabolic and anti-atherogenic effects.
• Familial combined hyperlipidemia (FCH) is a common genetic dyslipidemia often associated with increased cardiovascular disease (CVD) risk.

Purpose of the Study:

• To investigate the differences in adiponectin multimer distribution between patients with FCH and healthy controls.
• To explore the relationship between adiponectin multimers and the presence of cardiovascular disease (CVD) in FCH patients.
• To examine potential sexual dimorphism in adiponectin multimer patterns in FCH.

Main Methods:

• Measurement of total adiponectin and its low molecular weight (LMW) and high molecular weight (HMW) multimers.
• Analysis of adiponectin multimer distribution in 29 female and 22 male FCH patients and 51 matched controls.
• Calculation of adiponectin sensitivity index (ASI) and LMW/HMW ratio.

Main Results:

• A significant sexual dimorphism in total adiponectin and its multimers was observed.
• Female FCH patients exhibited lower total adiponectin, HMW adiponectin, and LMW adiponectin compared to female controls.
• FCH females with CVD showed a significantly lower ASI and a higher LMW/HMW ratio, indicating a more atherogenic adiponectin profile.

Conclusions:

• Adiponectin multimer distribution is altered in female FCH patients, with a shift towards a more atherogenic profile in those with CVD.
• The findings highlight the potential role of adiponectin multimer dysfunction in the pathogenesis of CVD in FCH.
• Adiponectin multimer analysis may offer insights into CVD risk stratification in FCH patients.