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English Abstract
Journal Article
[The relationship between the rs6265 polymorphism of the BDNF gene and the level of serum neurotrophic factor in patients with Parkinson's disease].
OBJECTIVE: To evaluate the clinical features and the level of serum brain-derived neurotrophic factor (BDNF) in groups of patients with Parkinson's disease (PD) differentiated by the genotypes of BDNF polymorphism (rs6265).
MATERIAL AND METHODS: The level of serum BDNF in the biomarkers' multiplex panel of neurodegenerative diseases (HNDG3MAG-36K) was assessed in 134 PD patients. Allele discrimination was carried out by real-time PCR using TaqMan probes for the analysis of BDNF rs6265 polymorphism in groups of patients and controls ( n =192) matched for sex, age and ethnicity.
RESULTS: Comparing the distribution of rs6265 genotypes and alleles between groups of patients and controls no significant differences were found ( p >0.05). Serum BDNF levels varied significantly by genotype (rs6265) among PD patients. Minimum mean serum BDNF level (320.1±164.6 pg/ml) was noted for individuals with the AA genotype, which significantly differs from the corresponding indicator among individuals with GA (2944.2±1590.6 pg/ml; p =0.0001) and GG genotypes (2949.4±1620.6 pg/ml; p =3.9×10-5 ). The concentration of BDNF significantly differed between patients with different forms of PD ( p =0.0007) and increased as the stage of the disease progressed according to Hoehn and Yahr staging scale ( p =1.0×10-6 ).
CONCLUSION: The BDNF rs6265 polymorphism was not associated with the development of PD in the studied population. The variability of the mean serum BDNF level was established depending on the genotype of the BDNF polymorphism in PD patients and a number of clinical features.
MATERIAL AND METHODS: The level of serum BDNF in the biomarkers' multiplex panel of neurodegenerative diseases (HNDG3MAG-36K) was assessed in 134 PD patients. Allele discrimination was carried out by real-time PCR using TaqMan probes for the analysis of BDNF rs6265 polymorphism in groups of patients and controls ( n =192) matched for sex, age and ethnicity.
RESULTS: Comparing the distribution of rs6265 genotypes and alleles between groups of patients and controls no significant differences were found ( p >0.05). Serum BDNF levels varied significantly by genotype (rs6265) among PD patients. Minimum mean serum BDNF level (320.1±164.6 pg/ml) was noted for individuals with the AA genotype, which significantly differs from the corresponding indicator among individuals with GA (2944.2±1590.6 pg/ml; p =0.0001) and GG genotypes (2949.4±1620.6 pg/ml; p =3.9×10-5 ). The concentration of BDNF significantly differed between patients with different forms of PD ( p =0.0007) and increased as the stage of the disease progressed according to Hoehn and Yahr staging scale ( p =1.0×10-6 ).
CONCLUSION: The BDNF rs6265 polymorphism was not associated with the development of PD in the studied population. The variability of the mean serum BDNF level was established depending on the genotype of the BDNF polymorphism in PD patients and a number of clinical features.
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