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Objective To explore the interaction between tryptophan hydroxylase 2(TPH2) gene polymorphisms (rs4570625,rs11178997) and serotonin 1A receptor (5-HT1A) gene polymorpbisms (rs878567,rs1364043,rs6265) and the association with major depressive disorder (MDD) in a Chinese Han population.Methods The DNA isolated from peripheral blood samples of 288 MDD patients 288 healthy subjects was detected by single base primer extension assay (Snapshot).The generalized multifactor dimensionality reduction (GMDR) method was used to analyze the gene-gene interaction.Results Significant differences were found in the genotype (patients (TT:27,TA:152,AA:109),controls (TT:82,TA:105,AA:101),P＜0.01) and allele(patients (T:206,A:370),controls (T:269,A:307),P＜0.01) frequencies of rs1 1178997 within TPH2 between MDD patients and controls.Statistically,a greater risk of developing MDD was found in individuals with an rs1 1178997 A-allele(OR=1.574,95％CI=1.243-1.993).The interaction between TPH2 (rs4570625,rs1 1178997) and 5-HT1A (rs878567,rs1364043,rs6265) was considered as the best multi-locus model,and this showed a testing accuracy of 57.67％ and a CV consistency of 10/10.And this interaction had a significant effect on the risk of MDD (P=0.0107).Conclusion There may be an association between the interaction of TPH2 and 5-HT1A polymorphisms and MDD.
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Objective To investigate the single nucleotide polymorphisms(SNPs) of 5-HT1BR(rs6298),5-HT2AR(rs6311,rs6313) and 5-HT2BR(rs765458) gene,and their gene-gene interactions on suicidal behavior in major depressive disorder.Methods The blood samples were taken from 281 depression patients with impulsive suicide attempt and 281 age-matched healthy controls from a hospital in Harbin city,Heilongjiang province.The DNA isolated from blood samples and was genotyped using TapMan SNP genotyping probe.χ2 test was used to compare differences in the distribution of gene alleles between cases and controls.Haplotype and linkage disequilibrium(LD) analysis was performed using Haploview 4.0 software.GMDR was used to analyze the gene-gene interaction.Results The rs6313 and rs6311 of the 5-HT2AR gene were in strong linkage disequilibrium (D=0.756,r2=0.375).There was a significant gene-gene interaction of 5-HT1BR (rs6298),5-HT2AR (rs6311,rs6313) and 5-HT2BR(rs765458) on suicidal behavior(P<0.05).In this model,the test accuracy was 0.6182 and CV value was 10/10.Conclusion A haplotype containing rs6311 and rs6313 of 5-HT2AR gene is associated with suicidal behavior.The interaction of 5-HT1BR gene (rs6298),5-HT2AR gene (rs6311,rs6313) and 5-HT2BR gene (rs765458) are associated with depression suicidal behavior.
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Objective To explore the association between GNβ3 gene and depression,and to investigate the interaction of gene-environment(negative life events and childhood trauma) and potential possible pathogenesis of depression.Methods The sample of peripheral blood was collected from Chinese Northern patients(n=500) and controls(n=500).Snapshot technique was used to detect the genotype frequency and allele frequency of GNβ3 rs5443 polymorphism in cases and controls.The genotype and allele frequencies were analyzed by Chi-square test,the interactions of gene-environment were analyzed by Logistic regression.Results GNβ3 rs5443 genotype and allele frequencies were observed between patients and controls (x2 =20.249,P＜0.01;x2 =4.803,P＜0.05).There were genotype CC 102 and 158,genotype CT 280 and 217,genotype TT 118 and 125;allele C 484 and 533,allele T 516 and 467 between patients and controls,respectively.Logistic regression analysis showed that the interaction between rs5443 T+ and negative life events was associated with depression (P＜0.05,OR=1.957).In addition,individual carrying rs5443T+ genotypes and negative life events could increase risk of depression.Conclusion GNβ3 rs5443 is a possible susceptibility gene of depression.The interaction between rs5443 and negative life events is associated with depression.
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ObjectiveTo explore the relationship between single nucleotide polymorphism analysis of a novel tryptophanhydroxylase isoform(TPH2)gene rs11178997and depression,and suicidal behavior.MethodsThe specimens of peripheral blood were collected from Chinese Northern 300 depression and 300 controis.The amplification of TPH2 gene rs11178997 was executed by realtime-polymerase chain reaction (realtime-PCR),and analyzed by directed sequencing.And the association between the polymorphisms of TPH2 gene and depression and suicidal behavior was analyzed with SPSS 17.0.ResultsThe genotypic frequencies of the SNPs did not deviate from Hardy-Weinberg equilibrium both in patient and control groups (P ＞ 0.05 ).Compared with control group,significant difference of genotypes and alleles of TPH2 gene rs1 1178997 single nucleotide polymorphism had been found in patient group (75.7％ vs 39.7％,6.0％ vs 1.3％,18.3％ vs 1.3％ ; P＜ 0.05 for all),and the AA genotype frequency of rsl 1178997 was significantly higher in patients.Meanwhile there were not significant differences between genotypes of TPH2 gene rs11178997 and suicide behavior in patient group.Suicidal behavior of depression patients in allele genotypes was higher than nonsuicide behavior of depression patients (P ＞0.05).ConclusionTPH2 gene rs4570625 single nucleotide polymorphisms have association with the susceptibility of depression.
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The scientific spirit and humanistic spirit of medical staff are integrated originally.However,they are separated by many historical and realistic reasons,which result in the deterioration of doctor-patient relationship and doctor-patient conflict continuously.Facing the urgent call for the medical humanities spirit,it is an important topic to probe the scientific connotation of medical humanistic spirit,its lost cause and the return solution of it in the development of modern medicine.
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Constrained by traditional ethical concepts and medical reality,the hospice,as a new field of medical service,falls into a predicament in China.In order to get rid of the predicament at present and promote the construction of a harmonious socialist society,it is of great significance to comb,analyze and discuss the content,origins and development of the hospice,so as to seek a universal path for the future development of hospice.
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At present,due to the loss of humanities concern among hospitals,a series of negative issues including utilized and non-humanized physician-patient relationship have seriously hindered hospitals' survival and further development,and their role in social development.Therefore,it is necessary to discuss medical humanities concern in order to display its expected function and reconstruct a harmonious physician-patient relationship.