AIM:To develope a reversed-phase high performance liquid chromatographic method for determing chlorogenic acid and caffeic acid in Fanhuncao Granule(Senecio cannabifolius Less). METHODS: The operation was carried out on Eclipse XDB-C_(18) column with the mobile phase consisting of a mixture of acetonitrile-0.4% phosphoric acid(12(∶)88,V/V).The flow rate of 1.0 mL/min and UV detection wavelength at 327 nm were set to determine the contents of chlorogenic acid and caffieic acid. RESULTS: There was good linear relationship between the concentrations and the peak-areas of chlorogenic acid and caffeic acid.The two kinds of standard solutions were both stable in 16 h(RSD=1.55% for chlorogenic acid,1.11% for caffeic acid) The average recovery was 100.1% and 99.8% for chlorogenic acid and caffeic acid,repectively. CONCLUSION: The method is simple,sensitive,rapid and accurate,and can be used for the quality control of Fanhuncao Granule.

Objective To explore the 5,10-methylenetetrahydrofolate reductase( MTHFR) and 5-methyltet-rahydrofolate-homocysteine methyltransferase reductase( MTRR) gene polymorphisms among the Han women in Laiwu City.Methods A total of 559 Han women were recruited.And their oral epithelial cells were collected to extract genome DNA in order to detect gene polymorphisms of MTHFR and MTRR using fluorescence quantitative PCR.Then the results were compared with those in other cities in China.Results The frequency of MTHFR 677CC,677CT and 677TT of Han women in Laiwu city was 14.3%,46.7%and 38.1%,respectively.The frequency of MTHFR 677TT among Laiwu women was significantly different to those of Zhenjiang, Wuhan, Kunming, Deyang, Huizhou, Qionghai (P<0.05).The frequency of AA,AC,CC gene type on MTHFR A1298C was 78.2%,19.7% and 2.1%,respec-tively, the frequency was significantly different to those of Zhenjiang, Wuhan, Kunming, Deyang, Huizhou, Qionghai (P<0.05).The frequency of AA,AG,GG gene type on MTRR A66G was 53.3%,38.8%and 7.9%,respectively. The frequency of MTRR 66GG was significantly different to that of Qionghai(P<0.05).Conclusion The MTHFR, MTRR polymorphism distribution of Han women in Laiwu City has the characteristic of region specificity,respectively.

Objective:To prepare injectable interferon ?-2b(IFN-?-2b) loaded microsphere and develop a long-acting dosage form.Methods: IFN-?-2b loaded microspheres were prepared with poly(lactic-co-glycolic acid)(PLGA) as carrier material by double emulsion(w/o/w) method and solid in oil in oil(s/o/o) method separately.Physical and chemical characteristics of microspheres(mean diameter,morphology and drug entrapment efficiency) were evaluated;the in vitro release behavior and influencing factors of the microspheres were determined by micro-BCA(bicinchoninic acid) method;and IFN-?-2b stability during encapsulation and in vitro release was evaluated by sodium dodecyl sulfate polyacrylamide gel electropheresis.Results: The 2 types of microspheres produced had good shape and dispersive quality and a drug entrapment efficiency of more than 80%.IFN-?-2b bulk ultrafitration can significantly influence the mean diameter and in vitro release behavior of microspheres prepared by w/o/w method.The accumulated release(within 1 month) of the microspheres prepared by both methods was significantly improved when using PLGA with lower inherent viscosity.SDS-PAGE test showed aggregation of IFN-?-2b with s/o/o method,while there was no difference between the electrophoretic behavior of bulk IFN-?-2b and IFN-?-2b in microspheres prepared by w/o/w method.Conclusion: IFN-?-2b can be encapsulated into injectable microspheres to yield a one-month continuous release by both w/o/w method and s/o/o method.

AIM: To investigate the antioxidative and antinitrosative effects of copperleaf(Acalypha australis L) on TNBS-induced ulcerative colitis rats. METHODS: Using biochemical method,the activity of antioxidative enzyme SOD,GSH-Px and MDA were determined in normal,model and three rat's groups with low,moderate and high copperleaf decoction respectively.At the same time,the production of NO and the activity of iNOS were also measured.The expression of iNOS mRNA was also determined in normal,model and moderate-copperleaf decoction rats groups through RT-PCR method. RESULTS: The index SOD and GSH-Px increased and MDA reduced significantly in high-and moderate-copperleaf decoction groups compared with the model group.The production of NO the activity of iNOS reduced significantly in high-and moderate-copperleaf decoction groups compared with the model group.RT-PCR results demonstrated that the expression of iNOS mRNA was significantly inhibited in TNBS-induced ulcerative colitis rats after being treated with moderate-dosage copperleaf. CONCLUSION: Acalypha australis L.has antioxidative and antinitrosative effects which is probably one of the mechanism of copperleaf for treating UC.

Objective To explore the genotype distribution of methylenetetrahydrofolate reductase ( MTH-FR)C677T,A1298C and methionine synthase reductase (MTRR) A66G involved in the folic acid biosynthetic path-way among Chinese Han gestational age women in Sanhe City .Methods 601 samples were recruited from Sanhe re-gion,genomic DNA was obtained from the oral mucosa cells .The detections of MTHFR and MTRR gene polymor-phisms conducted with Taqman -MGB technology .The distribution of gene polymorphisms of this study was analyzed and compared with partial regions of China ,which were reported.Results The frequency of MTHFR 677TT among Sanhe women(37.40%) was significantly different to Yanbian (28.30%),Zhenjiang(21.84%),Songzi(15.40%), Deyang(13.80%),Huizhou(10.90%),Qionghai(6.14%),Zibo(43.6%) (χ2 =12.60,87.44,151.95,233.02, 61.87,446.90,7.27,all P<0.05).The frequency of MTHFR 1298CC(2.30%) was significantly different to Zibo (1.44%),Zhenjiang(3.50%),Songzi(2.60%),Deyang(6.26%),Huizhou(7.20%),Qionghai(7.13%) (χ2 =5.84,6.49,14.32,32.54,22.94,53.12,all P<0.05).The frequency of MTRR 66GG (7.50%) was significantly different to Qionghai (9.25%),Songzi(6.40%)(χ2 =16.34,4.10,all P<0.05).Conclusion The MTHFR, MTRR polymorphism distribution of Han women in Sanhe City is region specific ,respective .

Objective To explore the 5,10-methylenetetrahydrofolate reductase (MTHFR) and 5-methyltetrahydro-folate-homocysteine methyltransferase reductase ( MTRR ) gene polymorphisms among the Han women in Zhangjiagang city .Methods A total of 4008 Han women were recruited .Their oral epithelial cells were collected to extract genome DNA in order to detect gene polymorphisms of MTHFR and MTRR using fluorescence quantitative PCR.Then the results were compared with those in other cities in China .Results The genotype frequencies of MTHFR C677T CC, CT and TT among Zhangjiagang women are 32.2%, 49.5%and 18.3%, respectively.The C allele frequency is 64.3%, T allele frequency is 35.7%.The genotype frequencies of MTHFR A1298 C AA, AC and CC are 68.7%,28.7% and 2.5%, respectively .The A allele frequency is 80.8%, C allele frequency is 19.2%.The genotype frequencies of MTRR A66 G AA, AG and GG are 54.4%, 38.5%and 7.1%, respectively . The A allele frequency is 76.3%, G allele frequency is 26.4%.Conclusions The MTHFR, MTRR polymorphism distribution of Han women in Zhangjiagang city is region specific.

Objective To evaluate the effects of folic acid supplement on subjects with different 5, 10-methylenetet-rahydrofolate reductase (MTHFR) genotypes. Methods One hundred and eleven healthy women were divided into CC, CT and TT groups according to their MTHFR C677T genotypes. In each group subjects were randomly sub-divided into interven-tion (400 μg/d folic acid supplement) and control (usual diet) groups. The plasma folate, red blood cell (RBC) folate and plasma homocysteine (Hcy) concentration were measured at baseline and two months after intervention. Results The plasma folate was lower and the plasma Hcy was higher in the TT genotype than those in CC or CT genotypes (P＜0.05 or P＜0.01). After two months of intervention, the levels of plasma folate, RBC folate concentration increased while the plasma Hcy concen-tration decreased in all three intervention groups. Although the plasma folate concentration increased the most obvious in TT genotype than that of CC and CT genotypes, P＜0.05), the plasma Hcy concentration decreased the most obvious in TT geno-type than that of CT genotype, P＜0.05). Logistic regression analysis showed that the MTHFR TT genotype was a risk factor of high Hcy concentration, which was 8.078 times compared with that of CC genotype (P＜0.05). Conclusion Folic acid sup-plement can significantly increase plasma folate and red cell folate concentration, and reduce plasma Hcy concentration in all MTHFR genotypes. TT genotype was the most dangerous in disorder of folic metabolic and high Hcy concentration. However, low-dose folic acid supplement cannot reduce the risk of high Hcy concentration.

Objective To investigate the relationship of plasma homocysteine with the genotype distribution of MTHFR and MTRR among Chinese Han women in Xiangtan. Methods MTHFR C677T, A1298C and MTRR A66G geno?typing was analyzed to detect the distribution of gene polymorphisms among 1 701 women from Xiangtan city then the data were compared with the rest of the Han women in Zibo, Zhengzhou, Yantai, Zhenjiang, Songzi, Huizhou, Qionghai. Plasma Hcy levels from 110 patients were measured and analyzed the correlation with gene polymorphisms. Results The frequency of MTHFR C677T genotype and allele frequencies in Xiangtan is 12.6%which is higher than Huizhou (10.9%) and Qionghai (6.1%) but lower than Zibo (43.6%), Zhengzhou (36.8%), Yantai (32.2%), Zhenjiang (21.8%) with statistically significant dif?ference (P<0.05). There is no significant different in MTHFR C677T between Xiangtan and Songzi. The frequency of MTH?FR A1298C genotype and allele frequencies in Xiangtan is 4.8%which is lower than Qionghai(7.1%)but higher than Zibo (1.4%),Zhengzhou(2.4%), Yantai(1.8%), Zhenjiang(3.5%)and Songzi(2.6%)with statistically significant difference. The frenquency of MTRR A66G genotype and allele frequencies in Xiangtan is 6.8%which is higher than Zibo (4.8%) but lower than Qionghai (9.3%) with statistically signifcant difference. Plasma Hcy concentration correlate with MTHFR C677T, Hcy concentration in TT population is higher than that in CT and CC population(μmol/L:8.52±2.01 vs 5.94±1.47 vs 5.71± 0.18);Plasma Hcy concentration also correlate with MTHFR A1298C and Hcy concentration in CC population is higher than AA and AC population(μmol/L:9.83 ± 2.26 vs 6.35 ± 2.13 vs 5.55 ± 1.75);Plasma Hcy concentration does not correlate with MTRR A66G. Conclusion The gene polymorphism of MTHFR C677T, A1298C and MTRR A66G among the Han women in Xiangtan was statistically different from other selected regions of China. Mutation in MTHFR C 677T and A1298C were associated with elevated plasma levels of Hcy.

Objective To investigate the features of risk factors of minor stroke with CISS classification in Guangdong Province. Methods We retrospectively investigated the patients admitted within 3 days of the occurrence of a minor stroke, and were classified by CISS criteria as large artery atherosclerosis (LAA), cardiogenic stroke (CS), penetrating artery disease (PAD), other etiology (OE), undetermined etiology (UE). Results In this study, 303 pa-tients met the inclusion criteria of minor stroke. The highest percentage of the risk factors included hypertension (72.3%), hyperlipidemia (58.3%), and diabetes mellitus (39.9%). Among different subtypes, 41.9% were diagnosed with LAA, and 50.8% with PAD. Plasma triglyceride (TG)(1.765 ±1.18)mg/L vs.(2.19 ±1.84)mg/L,P=0.03], apolipoproteinsB (ApoB) [(0.95±0.29)mg/L vs.(1.11±0.46)mg/L,P=0.009]C-reactive protein (CRP) [(6.63±11.30) mg/L vs.(3.42 ±5.02)mg/L,P=0.042] and ApoB/ApoA1 ratio [(0.754 ±0.25)mg/L vs.(0.875 ±0.49)mg/L,P=0.019], differed significantly between group LAA and PAD. Conclusion Hypertension, hyperlipidemia and diabetes mellitus are the major risk factors of minor stroke. The most common subtypes of the minor stroke patients in Guangdong Province are LAA and PAD, and detecting their TG, apoB, CRP level and apoB/apoA1 ratio might help subclassify minor stroke according to CISS.

Objective To discuss the correlation between MTHFR gene polymorphism and unexplained recurrent spontaneous abortion.Methods A case control study was used in this study,140 patients with unexplained recurrent spontaneous abortion(UR-SA) (abortion group)and 143 cases of normal women(control group)were recruited.Genomic DNA was obtained and extracted from the oral mucosa cells.Fluorescence quantitative PCR was used to examine the MTHFR gene polymorphisms,and Taqman-MGB technology was conducted to analysis the relationship between single nucleotide polymorphism and disease.Results There was statistically significant difference in the frequencies of C677T genotype and alleles between the two groups(P＜0.05).However,no significant difference in the frequencies of A1298C genotype and alleles between the two groups(P＞0.05).Conclusion MTHFR gene C677T polymorphism might be one of the genetic risk factors of URSA.