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001-es BibID:BIBFORM042063
Első szerző:Losonczy Gergely (szemész)
Cím:Effect of the Gas6 c.834+7G>A Polymorphism and the Interaction of Known Risk Factors on AMD Pathogenesis in Hungarian Patients / Gergely Losonczy, Attila Vajas, Lili Takács, Erika Dzsudzsák, Ágnes Fekete, Éva Márhoffer, László Kardos, Éva Ajzner, Begoña Hurtado, Pablo Garcia de Frutos, András Berta, István Balogh
Dátum:2012
Megjegyzések:Age-related macular degeneration (AMD) is the leading cause of blindness in the elderly in the developed world. Numerous genetic factors contribute to the development of the multifactorial disease. We performed a case-control study to assess the risk conferred by known and candidate genetic polymorphisms on the development of AMD. We searched for genetic interactions and for differences in dry and wet AMD etiology. We enrolled 213 patients with exudative, 67 patients with dry AMD and 106 age and ethnically matched controls. Altogether 12 polymorphisms in Apolipoprotein E, complement factor H, complement factor I, complement component 3, blood coagulation factor XIII, HTRA1, LOC387715, Gas6 and MerTK genes were tested. No association was found between either the exudative or the dry form and the polymorphisms in the Apolipoprotein E, complement factor I, FXIII and MerTK genes. Gas6 c.834+7G>A polymorphism was found to be significantly protective irrespective of other genotypes, reducing the odds of wet type AMD by a half (OR = 0.50, 95%CI: 0.26-0.97, p = 0.04). Multiple regression models revealed an interesting genetic interaction in the dry AMD subgroup. In the absence of C3 risk allele, mutant genotypes of both CFH and HTRA1 behaved as strongly significant risk factors (OR = 7.96, 95%CI: 2.39 = 26.50, p = 0.0007, and OR = 36.02, 95%CI: 3.30-393.02, p = 0.0033, respectively), but reduced to neutrality otherwise. The risk allele of C3 was observed to carry a significant risk in the simultaneous absence of homozygous CFH and HTRA1 polymorphisms only, in which case it was associated with a near-five-fold relative increase in the odds of dry type AMD (OR = 4.93, 95%CI: 1.98-12.25, p = 0.0006). Our results suggest a protective role of Gas6 c.834+7G>A polymorphism in exudative AMD development. In addition, novel genetic interactions were revealed between CFH, HTRA1 and C3 polymorphisms that might contribute to the pathogenesis of dry AMD.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
egyetemen (Magyarországon) készült közlemény
Megjelenés:PLoS One. - 7 : 11 (2012), p. e50181. -
További szerzők:Vajas Attila (1973-) (szemész) Takács Lili (1969-) (szemész) Dzsudzsák Erika Fekete Ágnes Márhoffer Éva Kardos László (1970-) (megelőző orvostan és népegészségtan szakorvos) Ajzner Éva (1968-) (laboratóriumi szakorvos) Hurtado, Begona de Frutos, Pablo Garcia Berta András (1955-) (szemész, gyermekszemész) Balogh István (1972-) (molekuláris biológus, genetikus)
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001-es BibID:BIBFORM010492
Első szerző:Losonczy Gergely (szemész)
Cím:Analysis of complement factor H Y402H, LOC387715, HTRA1 polymorphisms and ApoE alleles with susceptibility to age-related macular degeneration in Hungarian patients / Gergely Losonczy, Ágnes Fekete, Zoltan Voko , Lili Takacs, Ildiko Kaldi, Eva Ajzner, Marta Kasza, Attila Vajas, Andras Berta, Istvan Balogh
Dátum:2011
ISSN:0001-639X (Print)
Megjegyzések:Recent studies strongly support the role of genetic factors in the aetiology of age-related macular degeneration (AMD). We investigated the frequency of Tyr402His polymorphism of the complement factor H (CFH) gene, Ser69Ala polymorphism at LOC387715, rs11200638 polymorphism of the HTRA1 gene and different apolipoprotein E (ApoE) alleles in Hungarian patients with AMD in order to determine the disease risk conferred by these factors. Methods: In a case-control study, we performed clinical and molecular genetic examination of 105 AMD patients (48 patients in the early and 57 in the late subgroup) and 95 unrelated healthy controls. Detailed patient histories were recorded with the use of a questionnaire focusing on known risk factors for AMD. Results: In the early AMD subgroup, homozygous CFH, LOC387715 or HTRA1 polymorphisms conferred a 4.9-fold (95% confidence interval [CI] 1.7-14.2), 7.4-fold (95% CI 2.1-26.2) or 10.1-fold (95% CI 2.5-40.8) risk of disease, respectively. In the late AMD subgroup, carriers of two CFH, LOC387715 or HTRA1 risk alleles were at 10.7-fold (95% CI 3.7-31.0), 11.3-fold (95% CI 3.2-40.4) or 13.5-fold (95% CI 3.3-55.4) greater disease risk, respectively. Two CFH and one LOC387715 risk alleles in combination conferred a 15.0-fold (95% CI 3.2-71.0) increase in risk, whereas two LOC387715 risk alleles combined with one CFH risk allele was associated with a 14.0-fold (95% CI 2.1-95.1) increased risk for late AMD. ApoE alleles neither increased disease risk nor proved to be protective. Conclusions: The CFH, LOC387715 and HTRA1 polymorphisms are strongly associated with the development of AMD in the Hungarian population. The association is particularly pronounced when homozygous risk alleles are present and in the late stages of the disease.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Acta Ophthalmologica. - 89 : 3 (2011), p. 255-262. -
További szerzők:Fekete Ágnes Vokó Zoltán (1968-) (epidemiológus) Takács Lili (1969-) (szemész) Káldi Ildikó (szemész) Ajzner Éva (1968-) (laboratóriumi szakorvos) Kasza Márta Vajas Attila (1973-) (szemész) Berta András (1955-) (szemész, gyermekszemész) Balogh István (1972-) (molekuláris biológus, genetikus)
Internet cím:DOI
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