Association of single nucleotide polymorphisms of SCN1A gene with therapeutic effect of carbamazepine among ethnic Zhuang Chinese patients with epilepsy / 中华医学遗传学杂志

OBJECTIVE@#To assess the association of single nucleotide polymorphisms of SCN1A gene with therapeutic effect of carbamazepine among ethnic Zhuang Chinese patients with epilepsy.@*METHODS@#Peripheral blood samples were taken from 186 epileptic patients for whom 66 cases standard regime of carbamazepine treatment was effective. Genotypes of rs3812718 and rs1813502 loci of the SCN1A gene were determined by Mass ARRAY-IPLEX and matrix assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS). Correlation between genotypes of patients and efficacy of carbamazepine treatment was analyzed.@*RESULTS@#Three genotypes (GG, GA and AA) were detected at both rs3812718 and rs1813502 loci of the SCN1A gene. A significant difference was found in allelic distribution (chi-square=17.810, P=0.000) and genotypic distribution (chi-square=17.873, P=0.000) of the rs3812718 locus between the effective group and ineffective group. No such difference was found with the rs1813502 locus (chi-square=1.606, P=0.206; chi-square=1.546, P=0.462, respectively). Compared with the GG+GA genotype, the AA genotype at rs3812718 locus significantly reduced the antiepileptic efficacy of carbamazepine (OR=3.776, 95%CI: 2.007-7.105). Among the 66 patients who were responsive to carbamazepine treatment, those with the AA genotype for rs3812718 or rs1813502 shown no significant difference in their blood concentration of carbamazepine compared with those with the GG+GA genotype (t=1.562, P=0.125; t=0.843, P=0.562, respectively). rs3812718 and rs1813502 were not in strong linkage disequilibrium.@*CONCLUSION@#Polymorphisms of rs3812718 of the SCN1A gene is associated with carbamazepine resistance among ethnic Zhuang Chinese epilepsy patients from Baise region.

Relationship between the single nucleotide polymorphisms of SCN1A genes and the therapeutic effects of carbamazepine in Zhuang population with epilepsies / 实用医学杂志

Objective To investigate the relationship between the single nucleotide polymorphisms of SCN1A genes and the therapeutic effects of carbamazepine in Zhuang population with epilepsies. Methods We used Mass ARRAY-IPLEX and matrix assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS) technology to detect the SCN1A gene rs4667869 and rs10497275 genotypes in peripheral blood of186 Zhuang individuals with epileptic (66 cases in effective group and 120 cases of ineffective group) who received the standardized treatment of carbamazepine in Baise Region. The reversed phase high-performance liquid chromatography was used to determine blood drug level of carbamazepine. The correlations between the genotypes, alleles and the carbamazepine efficacy of the two groups were evaluated, respectively. We also analyzed the difference of carbamazepine's blood concentration between different genotypes. Results Three genotypes of GG, GC and CC were detected in rs4667869 locus. There were 3 genotypes of GG, GA and AA found in rs 10497275 locus.The differences in the allele distribution (χ2 = 11.790, P = 0.001) and genotype distribution (χ2= 10.655, P =0.005) of the rs4667869 locus were statistically significant between the two groups (ineffective group vs. effective group). However, there was no significant difference in allele distribution (χ2 = 3.335, P= 0.068) and genotype (χ2= 3.046, P = 0.218) for rs 10497275 locus in these two groups. Compared with the GG + GC genotype, the CC genotype of rs4667869 locus significantly reduced the antiepileptic efficacy of carbamazepine (OR = 2.800, 95％CI : 1.495～5.244). W hile there were no significant differences in blood concentration of genotype CC (t=1.273, P = 0.083) comparing with genotypes GG + GC in rs4667869. No significant differences were found in blood concentration between genotype AA and genotypes GG + GA of rs 10497275 (t= 0.963, P = 0.064). Conclusions These results suggest that the single nucleotide polymorphisms of rs4667869 in SCN1A genes could be associated with the drug resistance of carbamazepine in Zhuang population with epilepsies.

Experimental Study on the Up-Regulation of NF-kappa B and MMP-9 mRNA Level in HUVECs Stimulated by Serum from Children with Coronary Artery Lesions of Kawasaki Disease / 现代检验医学杂志

Objective To investigate the relationship between nuclear factor kappa B(NF-κB) and matrix metalloproteinase-9 (MMP-9) mRNA in human umbilical vein endothelial cells(HUVECs) stimulated by the serum from children with coronary artery lesions of Kawasaki disease (KD).Methods HUVECs were cultured and were divided into 4 groups:normal serum group,general fever group,Non-CALs group and CALs group.Co-Immunoprecipitation (ChIP) was used to detect the relationship between NF-κB and MMP-9,and RT-PCR was used to detect the mRNA level of MMP-9.Results Compared with control groups,NF-κB p65 could bind the promoter of MMP 9 in HUVECs cultured with 10 ％ serum from KD patients with coronary artery lesions.The mRNA level of MMP 9 was also up-regulated.Conclusion NF-κB p65 can promote the transcription of MMP-9 in HUVECs induced by the serum from KD patients with coronary artery lesions.

Effects of RNA interference-induced tryptase down-regulation in P815 cells on IL-6 and TNF-alpha release of endothelial cells / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

<p><b>OBJECTIVE</b>To explore the effects of down-regulated tryptase expression in mast cells on the synthesis and release of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha) of vascular endothelial cells.</p><p><b>METHODS</b>Tryptase-siRNA (small-interfering RNA) vector was constructed to inhibit tryptase expression in P815 cells. The medium of P815 cells treated by the tryptase-siRNA (RNAi-P815 group) or pure vector (P815 group) was collected and used to culture bEnd.3 cells. The messenger RNAs (mRNAs) of IL-6 and TNF-alpha in bEnd.3 cells and their protein levels in the medium were measured by reverse transcription polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA), respectively.</p><p><b>RESULTS</b>IL-6 and TNF-alpha mRNAs in bEnd.3 cells cultured in RNAi-P815-conditioned medium decreased significantly compared to those in P815-conditioned medium. Consistently, IL-6 and TNF-alpha protein levels in the medium of bEnd.3 of RNAi-P815 group were lower than those of P815 group.</p><p><b>CONCLUSION</b>Reduced tryptase expression significantly inhibited the synthesis and release of IL-6 and TNF-alpha in vascular endothelial cells. RNA interference targeting tryptase expression may be a new anti-inflammatory strategy for vascular diseases.</p>

Roles of cyclooxygenase-2 in microvascular endothelial cell proliferation induced by basic fibroblast growth factor / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>The level of basic fibroblast growth factor (bFGF) increases rapidly after cerebral ischemia. However, the molecular mechanisms for the effects of bFGF on cerebral microvascular endothelial cells (cMVECs) have not yet been fully elucidated. In this study, a murine cMVEC line, bEnd.3, was employed to study the effects of bFGF on cyclooxygenase (COX) expression and its downstream effects in cMVECs.</p><p><b>METHODS</b>After treatment with bFGF, RT-PCR and Western blotting analyses were carried out to evaluate the changes in COX-2 mRNA and protein expression, respectively. MTT assays were performed to measure cell proliferation. The prostaglandin E2 (PGE2) and vascular endothelial growth factor (VEGF) concentrations in the culture medium were measured by enzyme-linked immunosorbent assay (ELISA).</p><p><b>RESULTS</b>COX-2 mRNA and protein expressions in bEnd.3 cells were induced by bFGF in time- and dose-dependent manners. The bFGF-induced COX-2 upregulation led to enhanced PGE2 production by bEnd.3 cells, and this effect was abolished by the selective COX-2 inhibitor NS-398. bFGF also increased VEGF production by bEnd.3 cells, and this effect was blocked by NS-398 and the EP1/2 (PGE2 receptors) antagonist AH6809. Furthermore, exogenous PGE2 increased VEGF production in bEnd.3 cells, and AH6809 blocked this effect.</p><p><b>CONCLUSION</b>bFGF increases VEGF production in an autocrine manner by increasing COX-2-generated PGE2 in cMVECs and subsequently stimulates MVEC proliferation and angiogenesis.</p>

On Medical Moral Education in Medical College / 中华医学教育探索杂志

Medical students will be the clinicians in the future.The medical moral education and the moral character formation will directly influence their medical careers.It is extremely important for the medical students to know basic theory of the medical moral and develop their character by strengthening the medical moral and criterion education,especially in the time of increasing conflicts between doctors and patients.

Dynamic changes in focal adhesion kinase during cell migration induced by bFGF and the significance / 生理学报

Cell migration plays an important role in repair of injury, angiogenesis, cancer metastasis and so on. In this paper the effects of basic fibroblast growth factor (bFGF) of different concentrations on ECV-304 cell migration, and the dynamic changes in focal adhesion kinase (FAK) were observed. The relationship between FAK and cell migration induced by bFGF was studied. A ECV-304 cell scratch wound model was established and the images of cell migration were quantitatively measured using a computer-assisted videomicroscopic system. The dynamic changes in FAK content (Western blot), FAK activity (immunoprecipitation plus Western blot) and FAK mRNA (RT-PCR) were measured in vitro. The expression of integrin alpha3 was investigated using immunocytochemical staining (ABC method). The results showed that bFGF produced a dual-phase regulatory effect on ECV-304 migration when the cell confluent areas reached 90%-95% in culture. It was found that compared with the control group (0 ng/ml bFGF), the cell migration was stimulated (P<0.05), inhibited (P<0.05) and unchanged when the cultured cells were treated with bFGF at the concentrations of 5, 10 and 15 ng/ml, respectively. The content and activity of FAK protein were markedly up-regulated in 5 ng/ml bFGF group and down-regulated in 15 ng/ml bFGF group, respectively. FAK mRNA expression came to the peak in 5 ng/ml bFGF group after 6 h culture and there was a significant difference compared with the control group. In various experimental groups there were no significant differences in the expression of integrin alpha3 compared with the control group according to the immunocytochemical staining. The results mentioned above suggest that different concentrations of bFGF have a dual-phase effect on the migration of cultured ECV-304 cells, which correlates positively with FAK content, activity and mRNA in cultured ECV-304 cell scratch wound model. The FAK plays an important role in the signal transduction pathway of cell migration induced by bFGF, while bFGF can regulate the content of FAK in ECV-304 cells at gene transcription level.