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  • Title: TGF-beta(1) gene polymorphism in psoriasis vulgaris.
    Author: Baran W, Szepietowski JC, Mazur G, Baran E.
    Journal: Cytokine; 2007 Apr; 38(1):8-11. PubMed ID: 17560118.
    Abstract:
    Overexpression of TGF-beta(1) has been implicated in the pathology of many inflammatory diseases, including psoriasis. This study was performed to investigate the association between TGF-beta(1) single nucleotide polymorphism and susceptibility for psoriasis vulgaris. DNA from 78 patients with psoriasis vulgaris and 74 healthy volunteers was investigated. Polymorphism of TGF-beta(1) gene in codon 10 (T/C) and codon 25 (G/C) was evaluated by PCR-SSP and the results were compared between group of psoriatic patients, divided into early onset of psoriasis (type I) and late onset of psoriasis (type II) subgroups, and control healthy subjects. Frequencies in genotypes were similar between patients and control group (p >0.7), but between type I and type II psoriasis patients highly significant difference was found (p <0.0003). Higher frequency of CC/GG (intermediate producer) and TC/GG (high producer) was noted in the type I group, but the second high producer genotype (TT/GG) was more common in type II group. Also between type II psoriasis patients and healthy controls statistically significant difference was found (p <0.000001). In analyzing frequencies of carriage and alleles no significant differences were found. TGF-beta(1) gene polymorphism in codon 10 and 25 is not associated with susceptibility to psoriasis vulgaris, but may be important for the type of the disease.
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