title: A non-conservative polymorphism in the IL-6 signal transducer (IL6ST)/gp130 is associated with myocardial infarction in a hypertensive population.
abstract: Inflammation is a key component in the development of atherosclerosis, and myocardial infarction (MI); therefore we investigated the association between an interleukin-6 signal transducer (IL6ST)/gp130 polymorphism, gp130 function and risk of MI. Structural modeling suggested that a non-conservative single nucleotide polymorphism in the gp130, Gly148Arg, can change the stability and functional properties of the molecule. In vitro studies were done with BAF/3 cells lacking endogenous gp130. Cells stably transfected with the gp130 148Arg variant proliferated less and showed slightly lower STAT-3 phosphorylation in response to gp130 stimulation as compared to cells transfected with gp130 148Gly. In a prospectively followed hypertensive cohort we identified 167 patients who suffered a MI during the study and compared them to matched controls (mean age 57 years, 73% males, n=482). Carriers of the 148Arg variant (f(Arg)=0.12) of the gp130 receptor had decreased odds ratio for MI in univariate analysis (0.56, 95% CI 0.34-0.91, p=0.02). In conclusion, a genetically determined structural variant of the IL-6 receptor subunit gp130 is, independently of other known risk factors, associated with decreased risk of MI. The variant is also associated with decreased IL-6 responsiveness and could lead to a configuration change in the gp130 receptor.
authors.affiliation: Department of Neuroscience and Physiology, Göteborg University, Sweden.
authors.forename: Anna
authors.initials: A
authors.lastname: Benrick
authors.forename: Pernilla
authors.initials: P
authors.lastname: Jirholt
authors.forename: Ingrid
authors.initials: I
authors.lastname: Wernstedt
authors.forename: Maria
authors.initials: M
authors.lastname: Gustafsson
authors.forename: Juergen
authors.initials: J
authors.lastname: Scheller
authors.forename: Anna-Lena
authors.initials: AL
authors.lastname: Eriksson
authors.forename: Jan
authors.initials: J
authors.lastname: Borén
authors.forename: Thomas
authors.initials: T
authors.lastname: Hedner
authors.forename: Claes
authors.initials: C
authors.lastname: Ohlsson
authors.forename: Torleif
authors.initials: T
authors.lastname: Härd
authors.forename: Stefan
authors.initials: S
authors.lastname: Rose-John
authors.forename: John-Olov
authors.initials: JO
authors.lastname: Jansson
mesh_terms: D000328:Adult; D000368:Aged; D002478:Cells, Cultured; D015897:Comorbidity; D050822:Cytokine Receptor gp130 / Q000235:genetics*; D005260:Female; D014644:Genetic Variation; D006801:Humans; D006973:Hypertension / Q000453:epidemiology / Q000235:genetics*; D015850:Interleukin-6 / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology / Q000235:genetics*; D011110:Polymorphism, Genetic
chemical_list: D015850:Interleukin-6; D050822:Cytokine Receptor gp130