title: PPIA rs6850: A > G single-nucleotide polymorphism is associated with raised plasma cyclophilin A levels in patients with coronary artery disease.
abstract: Plasma level of cyclophilin A is a promising marker of vascular disease in patients with type 2 diabetes. Genetic variants in the peptidylprolyl isomerase A gene, encoding human cyclophilin may alter protein synthesis thus affecting its activity, function, and circulating plasma levels. We examined the effect of single-nucleotide polymorphisms (SNPs) within the PPIA gene on plasma levels of cyclophilin A and coupled this with status of vascular disease in patients with and without type 2 diabetes in 212 South Indian subjects. The regulatory region of PPIA gene was sequenced for SNPs. The association of SNPs with known blood markers of type 2 diabetes and coronary artery disease such as HbA1c, low- and high-density lipoproteins, triglycerides, fasting and postprandial blood sugar levels, and cyclophilin A were probed. We identified three SNPs namely, rs6850: A > G; (AG/-) c.*227_*228delAG and (-/T) c.*318_*319insT. Welchs two-sample t test indicated an association of SNP rs6850: A > G, located at the 5' UTR region with increased plasma levels of cyclophilin A in patients with coronary artery disease and with coronary artery disease associated with diabetes. The presence of rs6850: A > G variant was significantly associated with coronary artery disease irrespective of whether the patients had diabetes or not. In silico analysis of the sequence using different tools and matrix libraries did not predict any significant differential binding sites for rs6850: A > G, c.*227_*228delAG and c.*318_*319insT. Our results indicate that the SNP rs6850: A > G is associated with increased risk for elevated plasma levels of cyclophilin A and coronary artery disease in patients with and without type 2 diabetes.
authors.affiliation: Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India.
authors.forename: A
authors.initials: A
authors.lastname: Vinitha
authors.affiliation: Achutha Menon Centre, SCTIMST, Thiruvananthapuram, India.
authors.forename: V Raman
authors.initials: VR
authors.lastname: Kutty
authors.affiliation: Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India.
authors.forename: A
authors.initials: A
authors.lastname: Vivekanand
authors.affiliation: Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India.
authors.forename: G
authors.initials: G
authors.lastname: Reshmi
authors.affiliation: Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India.
authors.forename: G
authors.initials: G
authors.lastname: Divya
authors.affiliation: Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India.
authors.forename: S
authors.initials: S
authors.lastname: Sumi
authors.affiliation: PRS Hospital, Thiruvananthapuram, India.
authors.forename: K R
authors.initials: KR
authors.lastname: Santosh
authors.affiliation: Indian Institute of Diabetes, Thiruvananthapuram, India.
authors.forename: N S
authors.initials: NS
authors.lastname: Pratapachandran
authors.affiliation: The Madras Medical Mission, Chennai, India.
authors.forename: Mullassari S
authors.initials: MS
authors.lastname: Ajit
authors.affiliation: Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India. cckartha@rgcb.res.in.
authors.forename: C C
authors.initials: CC
authors.lastname: Kartha
authors.affiliation: Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India. suryaramachandran@rgcb.res.in.
authors.forename: Surya
authors.initials: S
authors.lastname: Ramachandran
mesh_terms: D020121:5' Untranslated Regions; D000328:Adult; D003324:Coronary Artery Disease / Q000097:blood / Q000150:complications / Q000235:genetics*; D021984:Cyclophilin A / Q000097:blood*; D003924:Diabetes Mellitus, Type 2 / Q000150:complications; D005260:Female; D005787:Gene Frequency; D006801:Humans; D008297:Male; D008875:Middle Aged; D019696:Peptidylprolyl Isomerase / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide
chemical_list: D020121:5' Untranslated Regions; D021984:Cyclophilin A; D019696:Peptidylprolyl Isomerase
keywords: Coronary artery disease; Cyclophilin A; PPIA gene; Single-nucleotide polymorphism; Type 2 diabetes mellitus; Vascular disease