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Apolipoprotein(a) phenotypes in cardio-cerebrovascular diseases
1Department of Biochemistry, Nanjing Jinling Hospital, Nanjing University, China.
Insights
Apolipoprotein(a) (apo(a)) phenotypes differ between patients with cardiovascular and cerebrovascular diseases and healthy individuals. Specific apo(a) phenotypes and higher Lp(a) serum concentrations are linked to increased disease risk.
Area of Science:
- Genetics
- Cardiology
- Neurology
Background:
- Apolipoprotein(a) (apo(a)) is a key component of lipoprotein(a) (Lp(a)), a known risk factor for cardiovascular and cerebrovascular diseases (CCVD).
- Understanding the distribution of apo(a) phenotypes in patient populations is crucial for assessing genetic predispositions to CCVD.
Purpose of the Study:
- To investigate the association between apo(a) phenotypes and CCVD.
- To compare apo(a) phenotype frequencies and Lp(a) serum concentrations between CCVD patients and healthy controls.
Main Methods:
- Phenotyping of apolipoprotein(a) (apo(a)) in 69 myocardial infarction survivors, 56 stroke patients, and 190 healthy Chinese individuals.
- Analysis of apo(a) phenotype frequencies and Lp(a) serum concentrations.
- Pedigree analysis to determine inheritance patterns.
Main Results:
- The distribution of apo(a) phenotype frequencies differs significantly between CCVD patients and healthy controls.
- Phenotypes B, S1, and S2 showed a remarkably higher frequency in CCVD patients compared to controls within the same single-band apo(a) phenotype.
- Lp(a) serum concentrations were significantly higher in CCVD patients than in controls within the same single-band apo(a) phenotype.
- Autosomal dominant inheritance was observed for apo(a) phenotypes in two analyzed pedigrees.
Conclusions:
- Apolipoprotein(a) phenotype distribution is a potential risk indicator for cardio-cerebrovascular diseases.
- Specific apo(a) phenotypes (B, S1, S2) and elevated Lp(a) levels are associated with increased CCVD risk.
- Apo(a)) phenotypes follow an autosomal dominant inheritance pattern.
Abstract:
We report apolipoprotein(a) (apo(a)) phenotypes of 69 myocardial infarction survivors and 56 stroke patients, and compare them with those of 190 healthy Chinese. The results indicate that the distribution of apo(a) phenotype frequency in cardio-cerebrovascular disease patients is different from those of controls. The frequency of the phenotypes B, S1 and S2 in patients is remarkably higher than those in controls within the same single-band apo(a) phenotype. Moreover, the Lp(a) serum concentrations in CCVD patients are significantly higher than those in controls within the same single-band apo(a) phenotype. The apo(a) phenotype analyses of two pedigrees are shown as a typical autosomal dominant inheritance.