1.Determination of 2,3,5,4′-tetrahydroxystilbene-2-O-?-D-glucoside in Polygonum multiflorum Thumb. and Jiangzhitongmai Tablet by HPLC
Chinese Traditional Patent Medicine 1992;0(12):-
Objective: To establish the assay method of 2,3,5,4′-tetrahydroxystilbene-2-O-?-D-glucoside in Jiangzhitongmai Tablet (Radix Polygoni Multiflori, Rhizoma Alismatis, etc.). Methods:HPLC conditions were as fellows: Chromasil C 18 column, a mobile phase of CH 3CN-H 2O(25∶75), and the wavelength at 320nm. Results:2,3,5,4′-tetrahydroxystilbene-2-O-?-D-glucoside was linear within the range of 0.044~ 0.7 ?g with a correlation coefficient of 0.9999. The average recovery was 98.54%. Conclusion:The method is simple, swift, accurate and practical in quality control of Jiangzhitongmai Tablet.
2.Expression and significance of ADMA/NOS/NO/cGMP pathway in maternal-fetal interface of patients with preeclampsia
Min LU ; Shanping HUANG ; Linmei ZHENG ; Yan XU
Chinese Journal of Immunology 2017;33(1):94-98
Objective:To study the expression and significance of ADMA/NOS/NO/cGMP pathway in the maternal-fetal interface of patients with preeclampsia. Methods: 60 patients were selected and divided into severe preeclampsia group, mild preeclampsia group and gestational hypertensive group according to the disease condition, meanwhile 20 healthy pregnant women of singleton receiving cesarean section were chosen as control group. Levels of NO and cGMP in placenta of the four groups were detected and compared,and activities of total NOS in placenta were measured and compared. The expression of eNOS and iNOS in placental tissue was detected by immunohistochemistry SP method. High-performance liquid chromatography was used to detect the level of ADMA in HUVECs. Results:The levels of NO in placenta of severe and mild preclampsia groups were (7. 6±3. 6) and (11. 4±4. 3) μmol/g, which were statistically significantly lower than that in control group(P<0. 05). The levels of cGMP in placenta of severe and mild pre-clampsia groups were ( 3. 26 ± 0. 31 ) and ( 4. 53 ± 0. 42 ) pmol/g, which were aslo significantly lower than that in control group ( P<0. 05). In the four groups,the level of cGMP in placenta was positively correlated with the level of NO in placenta(r=0. 672). The activities of total NOS in placenta of severe and mild preeclampsia groups were (10. 4±3. 0)and (14. 8±1. 6)U/mg protein,which were statistically significantly lower than that in control group ( P<0. 05 ) . In placenta of the four groups, the activity of total NOS was positively correlated with the level of NO(r=0. 785). The expression of eNOS in placenta of severe and mild preeclampsia groups was statistically significantly lower than that in control group ( P<0. 05 ) , the expression of iNOS in severe preeclampsia group was significantly higher than that in the control group(P<0. 05). The levels of ADMA in HUVECs of severe preeclampsia group,mild pre-eclampsia group and gestational hypertensive group were statistically significantly higher than that in the control group(P<0. 05). The level of ADMA in HUVECs was negatively correlated with the level of NO in placenta of the four groups ( r=-0. 582 ) . Conclusion:ADMA/NOS/NO/cGMP pathway may play an important role in the pathogenesis of preeclampsia.
3.Research on radix notoginseng for improving CKD rat renal fibrosis
Ying XU ; Li WANG ; Linmei JI ; Hongchun SHEN ; Sijing CHENG ; Junming FAN ; Dan WEN
Chongqing Medicine 2016;45(33):4625-4628
Objective To investigate the effects of notoginseng and guiding medicinals mediated notoginseng for improving the renal inter stitial fibrosis in rats with chronic kidney-disease(CKD)by regulating TGF-β signaling pathway.Methods A total of 100 male SD rats were randomly divided into five groups:normal group(NOR,n =20),model group(CKD,n =20),radix notogin-seng group(RN,n =20),radix notoginseng plus platycodi group (RNP) and radix notoginseng plus cinnamon group (RNC,n =20).Except for the NOR group,the CKD rat model in other groups was established by adenine gavage.After modeling,the NOR group and CKD group were given the same volume of normal saline by gavage,while the group RN,RNP and RNC were given corresponding drugs by gavage,for 4 weeks.After 4 weeks,the rats in each group were sacrificed for collecting serum and detecting the renal function(serum Scr,BUN),the renal tissues were taken for conducting HE and Masson staining.Then the renal tissue pathological damage severity was observed.The expressions of FN and LN in kidney tissue were detected by immunohistochemistry and the expressions of TGF-[β,α-SMA were detected by Western blot method.Results Compared with the NOR group,the model group exhibited the renal dysfunction(P<0.01),renal interstitial severe fibrosis manifestation and increased collagen deposition(P<0.05),and the expression of kidney tissues α-SMA(P<0.01),TGF-β(P<0.01),FN and LN were significantly increased.Compared with the model group,the renal function in various treatment groups was improved,Scr(P<0.01)and BUN(P<0.01)were significantly decreased,the renal interstitial fibrosis degree was reduced,collagen desposition was decreased(P<0.05),renal tissue α-SMA(P< 0.05),TGF-β(P<0.05),FN and LN expression were reduced to some extent,in which the effect of RNC group was stronger than that of the RN group and RNP group.Conclusion Notoginseng and guiding medicinals mediated notoginseng can retard the progression of renal interstitial fibrosis caused by adenine in CKD rat in varying degrees,its mechanism maybe reduce the expression of TGF-β protein.
4.Effect of electro-acupuncture at Zusanli acupoint on blood coagulation during intestinal ischemia-reperfusion in rats
Haisong WANG ; Dongmiao CAI ; Linmei XU ; Hualing YANG ; Zhenyi CHEN ; Yanlin WANG
Chinese Journal of Anesthesiology 2017;37(7):865-868
Objective To evaluate the effect of electro-acupuncture (EA) at Zusanli (ST36) acupoint on blood coagulation during intestinal ischemia-reperfusion (I/R) in rats.Methods Forty healthy male Sprague-Dawley rats,aged 6-8 months,weighing 250-300 g,were divided into 5 groups (n =8 each) using a random number table:sham operation group (group S),intestinal I/R group (group I/R),EA at Zusanli acupoint group (group EA),EA at non-acupoint group (group NE) and α7 nicotinic acetylcholine receptor antagonist α-bungarotoxin (α-BGT) group (group α-BGT).Intestinal I/R was induced by clamping the superior mesenteric artery for 4-5 min followed by 120 min of reperfusion.Bilateral Zusanli acupoints were stimulated with an electric stimulator (frequency 3 Hz,voltage 2-4 V,wave length 2 ms) for 30 min starting from the time point immediately after beginning of ischemia in group EA,while EA was performed at the points 5 mm lateral to the bilateral Zusanli instead in group NE.In group α-BGT,α-BGT 1 μg/kg was intraperitoneally injected at 45 min before ischemia,and the other treatments were similar to those previously described in group EA.Blood samples were collected from the abdominal aorta at 120 min of reperfusion for determination of the concentrations of tumor necrosis factor alpha (TNFα),tissue factor (TF),antithrombin (AT),tissue plasminogen activator (tPA),fiber plasminogen activator inhibitor-1 (PAl-l) and D-dimer in plasma (by enzyme-linked immunosorbent assay) and platelet count (PLT).The animals were sacrificed after blood sampling,the distal ileum specimens were removed for examination of the pathological changes with a light microscope,and the damage to the intestinal mucous membrane was assessed and scored according to Chin.Results Compared with group S,the concentrations of plasma TNFα,TF,tPA,PAI-1 and D-dimer were significantly increased,and the plasma AT concentration and PLT were decreased in I/R,NE and α-BGT groups,the concentrations of plasma TNFα and TF were significantly increased,and the plasma AT concentration was decreased in group EA,and Chiu's scores were significantly increased in I/R,EA,NE and α-BGT groups (P< 0.05).Compared with group I/R,the concentrations of plasma TNFα,TF,tPA,PAI-1 and D-dimer were significantly decreased,the plasma AT concentration and PLT were increased,and Chiu's scores were decreased in group EA (P<0.05),and no significant change was found in the variables mentioned above in NE and α-BGT groups (P>0.05).Compared with group EA,the concentrations of plasma TNFα,TF,tPA,PAI-1 and D-dimer were significantly increased,the plasma AT concentration and PLT were decreased,and Chiu's scores were increased in group NE (P<0.05).Conclusion EA at Zusanli acupoint can improve blood coagulation during intestinal I/R in rats,and the mechanism is related to activating the cholinergic anti-inflammatory pathway.
5.Bibliometric Analysis of Faculty Development Research in TCM Colleges and Universities
Da BU ; Chao JIANG ; Yun XU ; Na LIU ; Linmei PAN
China Pharmacy 2019;30(13):1729-1734
OBJECTIVE: To investigate the current situation of faculty development research in TCM colleges and universities, to analyze the hot spots and deficiencies in the research, and provide reference for the colleagues to engage in related research and carry out corresponding work. METHODS: With “faculty” as the title or keyword and “TCM university” or “TCM college” as author institution, the literatures about faculty development researches published by the TCM colleges and universities were retrieved from CNKI, VIP and Wanfang database during database establishment to Nov. 19th, 2018. Note Express 3.0 software was used to extract the parameters such as publish year, source journals, publish institution, the authors, cited frequency, fund assistance and keywords. Bibliometric statistics and analysis was performed by using SPSS 19.0 software. RESUITS: Totally 1 183 valid literatures were obtained, mainly for periodical literatures (1 144 literatures). The total number of literatures was on the rise, and reached to peak value of 118 in 2016. 1 144 literatures were published in 408 journals. The top 6 authors with high production were Liu Jingli (6 literatures), Liang Xinyue, Liu Na, Liu Yanping, Xu Nanyang, Yan Xiaotian (5 literatures respectively); the top one institution was Nanjing University of TCM (89 literatures). 653 (55.20%) literatures have cited records, most of them (457 literatures, 38.63%) were cited 1-3 times, and the average cited frequency was 2.15 times; the ratio of funded papers of state ministries and commissions were less than 3%; 7 098 keywords were extracted and high-frequency keywords were 31, involving “faculty” and “young teachers”. CONCLUSIONS: The research on faculty development in TCM colleges and universities has become increasingly active, but the core research author has not yet formed. The research still lacks of sustainability and comprehensiveness, and the research quality needs to be further improved.
6.Study on immunogenic cell death related proteins in nasopharyngeal carcinoma patients before and after radiotherapy
Jinhua LONG ; Lu XU ; Weili WU ; Xiuling LUO ; Xiaoxiao CHEN ; Cui LONG ; Linmei ZENG ; Xianhuai JIN ; Wei WANG ; Chunyan SHAO ; Wei XIONG ; Feng JIN ; Zhu ZENG
Chinese Journal of Radiation Oncology 2023;32(10):886-891
Objective:To explore the effect of clinical conventional fractionated dose radiation on the expression levels of immunogenic cell death (ICD) related proteins in patients with nasopharyngeal carcinoma (NPC).Methods:A total of 38 newly-treated NPC patients admitted to the Affiliated Cancer Hospital of Guizhou Medical University from November 2020 to December 2021 were enrolled, all of whom received induction chemotherapy and concurrent chemoradiotherapy, and another 20 healthy volunteers were selected as controls for a prospective study. The contents of ICD related proteins, namely calreticulin (CRT), high mobility group box 1 protein (HMGB-1) and heat shock protein 70 (HSP70) and the proportion of dendritic cell (DC) in the peripheral blood of patients were detected before treatment, after induction chemotherapy and after concurrent chemoradiotherapy, respectively. The correlation between the above indicators, general clinical data and short-term efficacy was analyzed by statistical methods such as t-test and analysis of variance (ANOVA). Results:The levels of HSP70 and HMGB-1 in peripheral blood of NPC patients before treatment were higher than those of healthy controls (both P<0.05). After concurrent chemoradiotherapy, the content of CRT was significantly higher than that before treatment ( P<0.05), whereas the difference before and after induction chemotherapy and the difference before and after concurrent chemoradiotherapy were not significantly correlated with the short-term efficacy of NPC patients. HSP70 level was significantly decreased after concurrent chemoradiotherapy ( P<0.001). There were no significant differences in the content of HMGB-1 after induction chemotherapy and concurrent chemoradiotherapy (both P>0.05). Conclusion:NPC patients receiving TPF regimen (docetaxel+cisplatin+fluorouracil) for induction chemotherapy and sequential cisplatin concurrent chemotherapy may induce ICD in NPC cells, and CRT has potential value in reflecting the clinical efficacy of NPC.