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- W3030420453 abstract "ObjectiveTo investigate the effects of stress on the methylation of brain derived neurotrophic factor gene in the patients with major depressive disorder (MDD), and to investigate the relationship between BDNF gene methylation and MDD.Methods47 cases of MDD were divided into MDD stress group(n=24) and MDD non stress group(n=23) while 27 health subjects were collected as normal control group.The methylation status of CpG island in the promoter region of BDNF gene in peripheral blood was detected by the method of heavy hydrogen and hydrogen sulfate.SPSS17.0 statistical software package was used to analyze the data.The differences of 19 CpG methylation rates and the overall level of methylation rates of three groups were analyzed.ResultsThe CpG overall methylation rates (median, interquartile range) of MDD stress group, MDD non stress group and normal control group was 189.150 (7.575), 188.500 (400) and 480.200(770) respectively, and the difference was statistically significant (P 0.05). The CpG methylation rates (mean± SD or median, interquartile range) of three groups were detected as follows: CpG-1: 2.600(0.275), 2.700(0.400), 6.500(0.800); CpG-2: 3.350(0.650), 3.300(0.800), 14.600(1.500); CpG-3: 1.596±0.363, 1.543±0.400, 4.581±0.437; CpG-4: 1.779±0.516, 1.522±0.329, 4.033±0.529; CpG-5: 0.900(0.575), 0.800(0.600), 5.700(1.500); CpG-6: 6.258±0.805, 6.213±0.944, 14.589±0.819; CpG-7: 10.667±0.894, 10.283±1.006, 15.000±0.763; CpG-8: 16.421±0.697, 16.330 ±0.775, 24.796±0.547; CpG-9: 4.713±0.565, 4.891±0.554, 28.826±0.679; CpG-10: 10.254±0.902, 10.378±0.777, 11.381±0.538; CpG-11: 24.125±2.301, 24.170±2.613, 37.474±1.579; CpG-12: 5.442±0.641, 5.596±1.117, 12.141±0.940; CpG-13: 4.150(1.150), 4.200(1.000), 61.700(4.800); CpG-14: 5.500±0.544, 5.717±0.568, 6.378±0.397; CpG-15: 3.700(0.700), 4.100(1.000), 63.300(2.500); CpG-16: 8.200(1.775), 8.100(1.500), 75.200(3.300); CpG-17: 3.250(0.550), 3.300(0.800), 34.600(5.000); CpG-18: 1.988±0.279, 1.939±0.259, 2.330±0.207; CpG-19: 35.338±2.421, 35.187±2.259, 65.941±2.692.16 CpG methylation rates of 19 CpG were higher in MDD stress group and MDD non stress group.Compared with the normal control group, the difference was statistically significant (P 0.05).ConclusionThe overall methylation rate of CpG in BDNF gene promoter region is closely related with MDD, which may affect the incidence of MDD.There was no correlation between CpG methylation in BDNF gene promoter region and MDD, and stressful life events may not be the direct cause of CpG methylation in BDNF gene promoter region in patients with MDD.Key words: Major depressive disorder; Brain-derived neurotrophic factor; Stress; Gene methylation" @default.
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- W3030420453 date "2016-05-20" @default.
- W3030420453 modified "2023-09-27" @default.
- W3030420453 title "Correlation between stress and BDNF gene promoter CpG methylation in patients with major depressive disorder" @default.
- W3030420453 doi "https://doi.org/10.3760/cma.j.issn.1674-6554.2016.05.011" @default.
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