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Objective To investigate the effect against exercise-indused fatigue in mice by aqueous extract of Ludisia dis-color and its mechanism .Methods Male mice were randomly divided into five groups including low ,middle ,high dose groups [aqueous extract of Ludisia discolor at dose of 1 .22 ,2 .44 ,4 .88 g/(kg · d) respectively ] ,positive control group [aqueous ex-tract of Rhodiola ,at dose of 2 .34 g/(kg · d)] and control group (distilled water ) .After intragastric administration for seven days ,mice were measured for loading swimming time ,and were tested 90 minutes after loading swimming for blood urea nitro-gen ,blood lactic acid and hepatic glycogen levels .Results The blood urea nitrogen was significantly decreased (P<0 .05) in aqueous extract of Ludisia discolor groups ,and hepatic glycogen was significantly increased (P<0 .05) in a dose-dependent manner .The blood lactic acid was significantly decreased in high dose group ,and weight loading swimming time was prolonged (P<0 .05) .The effects of Ludisia discolor is similar compared to Rhodiola .Conclusion The aqueous extract of Ludisia dis-color has anti-fatigue action in mice .The mechanism might be related with the increased glycogen reserves ,increased glucose aerobic decomposition ,as well as reduced anaerobic glucolysis and reduced protein breakdown .
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OBJECTIVE:To screen Gongshisong's active sites for anti-sports fatigue. METHODS:Gongshisong extract was prepared with 80% ethanol extraction technology,and extracted with petroleum ether,chloroform,ethyl acetate and n-butyl alco-hol after dispersed with water to obtain the extract. 70 mice were randomly divided into blank control group(1% sodium carboxy-methylcellulose,CMC-Na),positive control group [Rhodiola wallichiana capsules,590 mg/(kg·d)],petroleum ether,chloro-form,ethyl acetate and n-butyl alcohol extracts and aqueous layer of Gongshisong groups(TS,TL,TY,TZ,TW groups). Gong-shisong extracts groups was given relevant medicine 2.5 g(crude drug)/(kg·d),ig,for consecutive 7 days. Exhaustion time of bur-den swimming test was detected. 70 mice were grouped according to above method,and the contents of liver glycogen,muscle gly-cogen and the coefficient of liver were tested in mice. 80 mice were grouped according to above method,and model group was es-tablished additionally(1% CMC-Na). The contents of lactic acid(LA),creatine kinase(CK)and urea nitrogen(BUN)in serum of mice were determined after 90 minutes of unburden swimming. RESULTS:Compared with blank control group,exhaustion time of burden swimming mice in TS,TY and TZ groups prolonged;the content of liver glycogen increased in TY,TZ and TW groups;the content of muscle glycogen increased in TS and TW groups;the contents of BUN,LA and CK in mice increased in model group (P<0.05 or P<0.01). Compared with model group,the serum content of BUN in mice decreased in TS and TY groups;that of LA in mice decreased in TZ and TW groups;that of CK in mice decreased in TS group (P<0.05 or P<0.01). CONCLUSIONS:The petroleum ether and n-butanol extract site and water layer of Gongshisong are good anti-fatigue active sites.
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Objective:To analyze the association between gene single nucleotide polymorphisms ( SNP) of methylenetetrahydrofo-late reductase ( MTHFR) gene and lower extremity atherosclerotic disease ( LEAD) . Methods:The clinical data and peripheral blood were collected from 384 participants (224 LEAD cases and 160 normal controls) from Han population of Minnan Fujian. LEAD was detected with ankle brachial index ( ABI) , toe brachial index ( TBI) , color Doppler ultrasonic examination and the other imaging stud-ies. The SNP genotypes including rs1801133, rs1801131, rs2274976, rs4846048, rs3737966, rs1537515, rs4846049, rs3834044, rs13306561 and rs3737964 in the MTHFR gene were detected by matrix-assisted laser desorption ionization-time of flight ( MALDI-TOF) . Results:The genotype distributions of the ten loci were in accordance with Hardy-Weinberg equilibrium. There were 37 obvi-ous linkage disequilibrium, including the association between rs4846048 and rs3737966 (D′>0. 9) and so on. There were significant differences (P=0. 02) in GCCTCGGAAT haplotypes of MTHFR gene groups between LEAD cases and the normal groups. The results from chi-square test of allele frequencies suggested rs1801131 (OR=1. 287),rs4846048 (OR=1. 844,P=0. 02), rs3737966(OR=1. 339),rs4846049 (OR=1. 314) and rs3737964 (OR=1. 522). Significant differences (P<0. 05) were observed between LEAD and the normal groups in Cochran- Armitage trend test and Dominant gene action test of rs4846048. Conclusion: The SNP of rs1801131,rs4846048,rs3737966,rs4846049 and rs3737964 might be associated with the susceptibility of LEAD,and rs4846048 gene mutation might serve as a risk factor for LEAD in the community-based population.
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Objective To study the relevance between the polymorphisms and haplotype of multidrug resistant gene (MDR1) and the ratio of blood concentration/dosage in individuals treated by tacrolimus in stable phases post renal transplanta-tion ,and to provide data for personalized FK-506 administration .Methods The MDR1 C1236T ,G2677T/A and C3435T gen-otypes of 104 renal transplantation patients were determined by PCR followed sequencing method .The blood concentration of tacrolimus was detected by EMIT method .The differences in concentration/(dose × weight) (C/D) ratios were compared a-mong all of the genotype groups treated by tacrolimus .Results In the 104 renal transplantation recipients ,the frequency of MDR1 C1236T ,G2677T/A and C3435T mutation alleles was 56 .73% ,55 .77% and 33 .17% ,respectively .A correlation was revealed among SNP of MDR1 C3435T ,TTT haplotype and the C/D ratios (P<0.05) .In patients of CYP3A5*3*3 ,A cor-relation was also found among TTT haplotype and the C/D ratios (P< 0.05) .No difference was found among the MDR1 C1236T ,G2677T/A ,CGC haplotype and the C/D ratios (P>0.05) .Conclusion It is demonstrated that genetic polymor-phisms of MDR1 C3435T and TTT haplotype are correlated with C/D ratio of tacrolimus in Chinese renal transplant patients in stable stage .These findings affect the dose-adjusted concentration of tacrolimus individually .