2.Clinical application of nuclear medicine imaging in amyotrophic lateral sclerosis
Peng FU ; Lingge WEI ; Ainan GUO
Chinese Journal of Nuclear Medicine and Molecular Imaging 2014;34(3):253-256
Amyotrophic lateral sclerosis (ALS),a neurodegenerative disorder,is subtle in disease onset,difficult to diagnose,and fast-growing at progression.There.are at present little specific neurological imaging characteristics of ALS.Functional brain imaging techniques,such as SPECT and PET,were the early tools for investigation of ALS.The application of pixel-based analysis software (such as SPM) renders research in this area more convenient and objective.In recent years,improvement in brain receptor PET imaging has demonstrated its important value in the early diagnosis of ALS and evaluation of cognitive impairment.
3.Alzheimer's disease and sleep disorders
Rongyan ZHU ; Peng GUO ; Wei ZHANG
Chinese Journal of Geriatrics 2017;36(1):1-4
6.Study on efficacy of Chinese herbal drugs on improving endometrial receptivity detected by using trans-vaginal three-dimensional color Doppler ultrasound in patients with thin endometrium
Hong HU ; Xiuying YE ; Yiman FU ; Wei WEI ; Peng GUO
Chongqing Medicine 2017;46(19):2635-2637
Objective To explore the clinical value of transvaginal three-dimensional color Doppler ultrasound in assessing effects of Chinese herbal drugs on improving endometrial receptivity in patients with thin endometrium.Methods A total of 76 cases of patients diagnosed with thin endometrium in Jiangbei District Hospital of Traditional Chinese Medicine from June 2015 to October 2016 were selected and treated with Chinese herbal prescription for three months.The endometrial thickness,endometrial volume and blood flow indexes before and after treatment were measured by using transvaginal three-dimensional color Doppler ultrasound.Results After 3 months treatment,the endometrial thickness and endometrial volume were increased,and the pulse index (PI) and resistance index (RI) of endometrial blood flow were decreased,compared with those before treatment,there were statistically significant differences(P<0.05).The results of three-dimensional color Doppler ultrasound indicates that after 3 months treatment the vascularization index (VI),flow index (FI) and vascularization flow index (VFI) were significantly higher than those before treatment,there were statistically significant differences (P<0.05).Conclusion The Chinese herbal prescription could increase the thickness and volume of endometrium,augment blood supply,and improve endometrial receptivity significantly.Transvaginal color three-dimensional Doppler ultrasound is a convenient and objective method for evaluating clinical efficacy of Chinese herbal prescription in patients with thin endometrium,which has high practical value.
7.Antibacterial Activity of Compounds from Rabdosia rubescens
Gaoshen LI ; Wei ZHANG ; Tao PENG ; Meizhen GUO
World Science and Technology-Modernization of Traditional Chinese Medicine 2014;(3):610-613
This study was aimed to assay the antibacterial activity of compounds from Rabdosia rubescens. Disc dif-fusion (K-B method) was used to screen the in vitro antibacterial activity. All kinds of chromatography were used to isolate the chemical constituent and structure was identified by MS and NMR spectroscopy. The results showed that six compounds were isolated and identified as oridonin (1), rosmarinic acid (2), caffeic acid (3), salicylic acid (4), ferulic acid (5), vanillic acid (6). Oridonin had activity against Staphylococcus aureus (SA), Methcillin-resistant Staphylococcus aureus (MRSA), β-lactamase positive Staphylococcus aureus (ESBLs-SA), and showed the highest ac-tivity (MIC is 3.125, 6.25 and 6.25 μg·disc-1, respectively), but was still weaker than that of berberine as positive control (MIC is 0.156 μg·disc-1). Ferulic acid had activity against SA and MRSA (MIC is 50 and 50 μg·disc-1, re-spectively). Salicylic acid had only activity against SA (MIC 50 μg·disc-1). It was concluded that oridonin, ferulic acid and salicylic acid were the main antibacterial activity compounds from R. rubescens.
8.Establishment of a specific gene diagnosis method for Yersinia pestis by quantitative real-time PCR
Shanshan DONG ; Ying GUO ; Hongli TAN ; Wei LI ; Peng WANG
Chinese Journal of Endemiology 2016;35(2):119-122
Objective Using quantitative real-time PCR to establish a rapid specific genetic diagnostic technique for Yersinia pestis.Methods ①Four sets of specific probes and primers were designed,which targeted to chromosome genes of YPO0392,YPO1094,YPO2087 and YPO2090,respectively.②The probes and primers were tested for stability and specificity with 40 strains of Yersinia pestis and 47 strains of non-Yersinia pestis of different sources in Yunnan.③Eight positive DNA in Yulong,Yunnan,were tested with the screened probes and primers.Results ①Two sets probes and primers were selected,they were targeting YPO0392 and YPO1094,respectively.②The results were all positive of the eight positive DNA samples tested.Conclusion Two sets of primers and probes are selected for rapid specific diagnosis of Yersinia pestis.
9.Distribution characteristics of rs10975521 A/T and rs1929992 A/G polymorphism of IL-33 gene in Guangxi population
Jing GUO ; Yang XIANG ; Youfan PENG ; Yesheng WEI ; Yan LAN
Chinese Journal of Immunology 2016;32(6):849-852
Objective: To study and explore the distribution characteristics of rs10975521A/T and rs1929992A/G polymorphism of the IL-33 gene in Chinese Guangxi population. To compare the frequency distribution differences of allele and genotype of two sites among different ethnic. Methods:The polymorphism of rs10975521A/T and rs1929992A/G of IL-33 gene in 283 subjects were analyzed with the methods of Single base extension (PCR-SEB) and DNA sequencing,and the distribution frequency and the differences between groups of that were analyzed statisticaly. Results:Three genotypes of AA,AT and TT were found in rs10975521A/T with the frequency distribution of 12. 7%,53. 0% and 34. 3% respectively and there was no significant difference between sexes of each genotype and allele frequency in the Guangxi population ( P>0. 05 ) . There were significant differences of the allele frequency of rs10975521A/T in the Guangxi population compared with that in the European (P< 0. 05), han Chinese in Bejing (P< 0. 05) and Japanese people (P< 0. 01). Three genotypes of AA,AG and GG were found in rs1929992A/G with the frequency distribution of 23. 9%,53. 7% and 13. 4% respectively and there was no significant difference between sexes of each genotype and allele frequency in the Guangxi population(P> 0. 05),but the differences of genotype frequency of rs1929992A/G was statistically significant compared with that in the European,han Chinese in Bejing and Japanese people ( P< 0. 05 ) . There were significant differences of the allele frequency between Guangxi population and European (P< 0. 01),han Chinese in Bejing(P< 0. 05). Conclusion: There are different degrees of discrepancy of rs10975521A/T and rs1929992A/G polymorphism of IL-33 gene among different race and region.
10.Biomechanical study on femoral neck fracture fixation based on cortical screw support theory
Lijiang WANG ; Haiqiang WEI ; Lianjiang GUO ; Ning LI ; Aqin PENG
Chinese Journal of Trauma 2009;25(7):614-617
Objective To evaluate the biomechanical effect of cortical screw support technique in fixation of the femoral neck fractures. Methods The models of subcapital femoral neck fracture were made in eight matched pairs of embamled cadaver femurs and decided into experiment group and control group (four pairs per group). The side of experiment group was fixed using three cannulated compression screws with cortical screw support and that of control group with conventional screw placement. The speci-mens in two groups were tested in aspects of torsion and axial loading. Results In axial load test at load of 600 N and 800 N, the displacements in cortical screw support group were (0.677±0.135) mm and (0.907±0.132) mm respectively, while those of femoral head in conventional screw placement group were (0.899±0.160) mm and (1.202±0.152) nun respectively (P <0.05). There was signifi-cant difference between the two groups (P < 0.05). The maximal vertical loading for failure of the fixa-tion was (2 782±228) N in cortical screw support group and (1 950±281) N in conventional screw placement group (P < 0.01). In torsibility test at 4° and 6° torsibility, the torque-moments of cortical screw support group were (10.406±1.515) Nm and (15.328 ±1.471) Nm respectively and those of conventional screw placement group (6.628±1.163) Nm and (9.072±1.570) Nm respectively, with statistical difference between two groups (P <0.01). The maximal torque-moment for failure of the fixa-tion was (25.437±5.213) Nm in cortical screw support group and (13.235±3.012) Nm in conven-tional screw placement group (P < 0.01). Conclusion Fixation of femoral neck fractures by using cortical screw support can significantly enhance anti-torsion and anti-compression of internal fixation.