1.ISSR Identification of genetic diversity in Aconitum carmichaeli
Qun LUO ; Danwei MA ; Yuehua WANG
Chinese Traditional and Herbal Drugs 1994;0(10):-
Objective ISSR Identification of genetic diversity in Aconitum carmichaeli by ISSR marker technique. Methods Genetic diversity between Jiangyou Radix Aconiti Lateralis Preparata and nine wild A. carmichaeli populations was determined by ISSR technique. Results Eight primers were selected to produce highly reproducible ISSR bands. Among 98 amplified bands, 68 showed polymorphism, the percentage of polymorphic bands (PPB) reached to 69.39%. Observed number of alleles (Na), effective number of alleles (Ne), Nei′s gene diversity index (H), and Shannon information index (I) were 1.693 9, 1.371 5, 0.230 8, and 0.353 0, respectively. A DNA profile was discovered with a single primer, ISSR 855, in which each of ten tested populations had its unique patterns and was distinguished from each other. Conclusion ISSR Method is suitable for DNA fingerprinting, identification , and genetic diversity analysis of A. carmichaeli.
2.Correlated Factors of Compliance to Alimentary Control in Hyperuricemia Patients
Shuxiang GAI ; Xiaoqing WANG ; Hong CHEN ; Danwei YIN ; Limei GAO
Chinese Journal of Rehabilitation Theory and Practice 2008;14(3):278-280
Objective To investigate the correlated factors of compliance to dietary therapy in hyperuricemia patients.Methods 388 hyperuricemia patients were investigated with the questionnaire developed by ourselves.Results 119 cases(31.6%)complied to the dietary control program,and 257 cases(68.4%)didn't controlled food and drink or controlled disqualification.The compliance to alimentary control of hyperuricemia patients was correlated intimately with family history,occupation,the degree of nosography,heathy education,propaganda of the masses media,family supporting and satisfaction.Conclusion The alimentary control compliance and related knowledge about dietary therapy of hyperuricemia of hyperuricemia patients were poor.The alimentary control compliance was better in patients with more serious illness,more heathy knowledge,more family supporting,more propaganda of the masses media and more satisfaction.
3.Inhibition of miR-802 on insulin secretion by targeting Hnf1B
Danwei WANG ; Fangfang ZHANG ; Liang JIN ; Jie WU
Journal of China Pharmaceutical University 2020;51(1):99-106
To investigate the effect of miR-802 on insulin secretion by islet β cells and its mechanism, miR-802 was overexpressed or knocked down in primary islet cells and Min6 cells via transfecting miR-802 mimic and miR-802 inhibitor, respectively. The effect of miR-802 on insulin secretion was detected by ELISA. The target gene of miR-802 was confirmed by miRNA target gene database prediction, luciferase report and Western blot. The function recovery experiment was carried out to clarify the mechanism of miR-802 regulating β cell secretion of insulin. The results showed that overexpression of miR-802 in islet primary cells and Min6 cells inhibited insulin secretion. qPCR and Western blot showed that miR-802 inhibited insulin secretion by inhibiting the transcription and translation of the target gene, hepatocyte nuclear factor 1β(Hnf1B).
4.Genotypic analysis of Mycobacterium tuberculosis strains collected from He'nan Province by 24-locus variable-number tandem-repeat typing and spoligotyping
Jie SHI ; Danwei ZHENG ; Yankun ZHU ; Junwei ZHAO ; Xiaoguang MA ; Shaohua WANG ; Hui LI ; Jin XING
Chinese Journal of Infectious Diseases 2018;36(12):741-746
Objective To investigate the genotype of M.tuberculosis in He'nan Province.Methods A total of 668 M.tuberculosis clinical strains collected in difference regions of He'nan Province during 2015 were genotyped by two standard methods,including classical 24-locus mycobacterium interspersed repetitive unit variable-number tandem-repeat (MIRU-VNTR) typing and spoligotyping.Results The 668 isolates were divided into 11 clusters and 35 patterns by spoligotyping.Among the 558 Beijing strains,546 were typical Beijing strains and the other 12 were atypical Beijing strains.Among the 110 non-Beijing strains,eight were new strains and the remaining 102 non-Beijing strains were divided into 10 families.There were 76 isolates belonging to T family,including 59 of T1 families,7 of T2 families,and 10 of T3 families.The 668 strains were divided into 550 gene patterns by standard 24-locus VNTR,including 508 un-clustered patterns and 160 clustered into 42 clusters.The largest cluster contained 21 strains,the other clusters contained 2-20 strains.Conclusion Beijing strain is still the most prevalent M.tuberculosis in He'nan Province.
5.Differential expression profile in Neuro-2a cells infected by rabies virus
Xiaomin LIU ; Yidi GUO ; Xin GUO ; Yannan ZHANG ; Chongyang WANG ; Zichen WANG ; Danwei ZHANG ; Maolin ZHANG
Chinese Journal of Veterinary Science 2024;44(8):1682-1690
Rabies is a zoonotic disease that poses a global public health threat.Rabies virus(RABV)is neurotropic and can cause severe neurological disorders and behavioral abnormalities in host,with a fatality rate nearly 100%.In order to identify the key genes for RABV affecting neuronal cell function,we established and analyzed the mRNA expression profile of Neuro-2a(N2a)cell in-fected with challenge virus standard(CVS)-11 by RNA sequencing(RNA-seq).Biological func-tions of differentially expressed genes(DEGs)were determined by GO and KEGG enrichment a-nalysis.The results showed that there were 415 differentially expressed genes in N2a infected with CVS-11 strain,of which 89 were up-regulated and 326 were down-regulated.These genes were re-lated to a variety of biological processes,such as axon guidance pathway,cholesterol metabolism pathway,nitrogen metabolism pathway,and glycosphingolipid biosynthesis pathway,many of them have been shown to be closely associated with RABV infection.A total of 12 DEGs related to axon conduction,antigen processing and presentation pathways were selected and detected by real-time PCR,and their expression trends were consistent with the RNA-seq results.The genomic tran-scriptomic data on N2a cell under RABV infection will provide new clues for probing the mecha-nisms of RABV infection and transmission in the nervous system in the future.
6.Fear memory and heart rate and blood pressure during conditioned fear in rats with hippocampal lesion or fimbria-fornix transection
Danwei ZHANG ; Guohai LI ; Rujing XU ; Jia WANG ; Xu XIAO ; Cheng XUE ; Yang ZHOU ; Ying ZHANG ; Yanmei HU ; Yuanyuan ZHANG ; Weining ZHANG
Chinese Journal of Behavioral Medicine and Brain Science 2018;27(12):1068-1074
Objective To investigate the effects of dorsal hippocampal lesions (DH) or fimbria-fornix transection (FF) on the learning and memory of conditioned fear and the heart rate and blood pressure in rats.Methods Nineteen male adult Wistar rats were used in this experiment.They were implanted telemetry sensors in their abdominal aortas.Two week later,six of the rats were subjected to permanent NMDA-induced neurotoxic lesions to the dorsal hippocampus (DH) and seven for the fimbria-fornix transection (FF)through stereotactic brain surgery,the left six were treated with saline as the control (Sham).All rats were subjected to a conditioned fear experiment.Meanwhile,changes in heart rate and blood pressure were measured.Results There was no significant difference in heart rate and blood pressure among the rats with the hippocampal operation or fimbria-fornix transection.In the acquisition of conditioned fear,there were significant difference in freezing time among the three group in both inter-trial-interval (ITI) and conditioned stimulus (CS) process (all P<0.05).The freezing time of the FF group showed significantly lower than that of the Sham group (P<0.05).There was no significant difference in heart rate and blood pressure among the three group(P>0.05).In the test of conditioned contextual fear memory,the freezing time percentage in the FF group ((0.31±0.16) %) significantly lower than that in the Sham group ((2.78± 1.23) %) (P<0.05)at the first 3 min of the test.There was a significant difference in heart rate among the three group.The heart rate of FF group ((436.42± 10.16) times/min) was significantly lower than that of the Sham group ((472.48±4.43) times/min,P<0.01) and the DH group ((469.94 ±7.36)times/min,P<0.01).In the test of conditioned tone fear memory.The freezing time percentage in FF group ((18.78±6.29) %) was significantly lower than that in the Sham ((51.77±9.33)%,P<0.01) and DH group ((59.19±8.13)%,P<0.01),but the freezing time percentage between the later two groups had no difference (P=0.52).The synchronous telemetry measurement showed there was no significant difference both in the heart rate and the blood pressure among the groups (all P>0.05) during the conditioned tone test.Conclusion The dorsal hippocampal lesions and fimbria-fornix transection in rats can significantly reduce the learning and memory ability in conditioned fear and scene fear in rats,and the effect of fimbria-fornix transection is more obvious.The decrease in,fear memory is not synchronously reflected in heart rate and blood pressure in rats.