title: Interleukin-4 C-590T polymorphism has no role in coronary artery bypass surgery.
abstract: Interleukin-4 exerts anti-inflammatory effects through decreased macrophage production of tumor necrosis factor-alpha and interleukin-1 beta. We investigated genetic predisposition in the interleukin-4 response to coronary revascularization and studied the association between C-590T polymorphism, interleukin-4 levels, and outcome of surgery. DNA was obtained from 96 consecutive patients undergoing elective coronary revascularization. Patients were genotyped for interleukin-4 C-590T polymorphism using a sequence-specific primer polymerase chain reaction. Interleukin-4 levels were measured using an enzyme-linked immunosorbent assay in serum samples taken 3 hr postoperatively. The frequency of interleukin-4 C-590T genotypes CC, CT, and TT was 33.3%, 27.1%, and 39.6%, respectively. Patients with the TT genotype had significantly higher circulating levels of interleukin-4 (3.4 +/- 4.6 pg x mL(-1)) postoperatively compared to CC (2.5 +/- 0.1 pg x mL(-1)) and CT (2.7 +/- 0.5 pg x mL(-1)) genotypes. Interleukin-4 C-590T polymorphism is the main determinant of postoperative interleukin-4 levels. The TT genotype is the highest producer of interleukin-4. Neither the genotype nor the serum levels seem to play any role in recovery from coronary artery bypass surgery.
authors.affiliation: Department of Cardiothoracic Surgery, South Manchester University Hospitals NHS Trust, Wythenshawe Hospital, Southmoor Road, Manchester, M23 9LT, United Kingdom. mbittar@doctors.org.uk
authors.forename: Mohamad N
authors.initials: MN
authors.lastname: Bittar
authors.forename: Noman H
authors.initials: NH
authors.lastname: Khasati
authors.forename: Abdul K
authors.initials: AK
authors.lastname: Deiraniya
authors.forename: Nizar
authors.initials: N
authors.lastname: Yonan
mesh_terms: D000368:Aged; D002315:Cardiopulmonary Bypass; D001026:Coronary Artery Bypass; D003324:Coronary Artery Disease / Q000097:blood / Q000235:genetics / Q000601:surgery*; D017558:Elective Surgical Procedures; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D015847:Interleukin-4 / Q000097:blood / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D011110:Polymorphism, Genetic; D011446:Prospective Studies; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: C508598:IL4 protein, human; D015847:Interleukin-4