1.OBSERVATION ON LECTIN RECEPTORS IN GLANDS OF INTESTINAL METAPLASIA OF GASTRIC MUCOSA
Jianhua TAO ; Yanyun ZHU ; Zhenyan LIU
Medical Journal of Chinese People's Liberation Army 1981;0(06):-
4 kinds of lectin receptors (PHA, DBA, PNA, ConA) in the tissues of a variety of lesions of the gastric mucosa are studied with the histochemical method (ABC technique) in 87 cases. The results are follows: the positive rates of 4 kinds of lectin-binding, the distribution of lectin receptors, the intensity of positiveness and the stained patterns are correlated to the histologic types and the grades of various mucosal lesions. The intensity of positive reaction of PHA, PNA and DBA shows a progressive rising, while that of ConA appears a gradual declining tendency with the change from normal gastric mucosa to intestinal metaplasia and cancer. The stained patterns of lectin are: type I is the main pattern for ConA, type I for PNA and type III for PHA and DBA .
2.Effects of Qufengtongluo Recipe on anionic site in glomerular basement membrane in adriamycin-induced nephropathy rats
Yanyun REN ; Wansen SUN ; Yanlong ZHAO ; Qiaoya MA ; Zhu WANG
Journal of Xi'an Jiaotong University(Medical Sciences) 2010;31(1):110-114
Objective To investigate the expression of anionic site in adriamycin-induced nephropathy (AN) rats, and to further explore the effects of Qufengtongluo Recipe on charge barrier in glomerulus in AN rats. Methods Adriamycin nephropathy was induced by a single tail intravenous injection of adriamycin. Totally 80 rats were randomly divided into normal control group and nephropathy model group. Three weeks later, the nephropathy model was established, and 50 AN rats were randomly divided into five groups: nephropathy model group (B, n=10), Qufeng group (C, n=10), prednisone and Qufeng group (D, n=10), prednisone group (E, n=10) and benazepri group (F, n=10), and they were treated respectively. With treatment being given respectively, renal tissue samples in each group were collected at week 3 and 7, respectively. The ultrastructure and expression of anionic site were examined by electron microscope observation. Results ① After adriamycin injection, a significant increase of the 24-hour urinary protein was observed at week 3 (P<0.01). In AN rats, serum albumin was decreased (P<0.01) while serum TCH and TG were increased (P<0.01). ② In AN rats the diffuse fusion and effacement of foot processes and decrease of anionic sites in GBM were observed at week 3. ③ At week 7, the average intensity of AS dramatically increased in C and E groups (P<0.01) compared with that in nephropathy model group. Conclusion The abnormal expression of AS is the important mechanism that leads to the occurrence and development of proteinuria in AN rats. It is possible that Qufengtongluo Recipe has effects on nephrotic syndrome through altering the charge barrier in GBM in glomerulus.
3.Effect of Qufengtongluo recipe on expression of nephrin mRNA in adriamycin-induced nephropathy in rats
Yanyun REN ; Wansen SUN ; Yanlong ZHAO ; Qiaoya MA ; Zhu WANG
Journal of Central South University(Medical Sciences) 2009;34(12):1216-1223
Objective To investigate the expression of nephrin mRNA in adriamycin-induced nephropathy (AN) in rats, and to explore the effect of Qufengtongluo recipe on proteinuria in AN rats and on the expression of nephrin mRNA. Methods Adriamycin nephropathy was induced by a single tail intravenous injection of adriamycin. We randomly divided 140 rats into a normal control group (n=32) and a nephropathy model group (n=108). Three weeks later, 90 AN rats were randomly divided into 5 groups: a model group, a qufeng group, a qufeng and prednisone group, a prednisone group, and a benazepri group (18 rats in each group). They were treated respectively, and renal tissue samples were collected at week 0, 3, 5, and 7, respectively. The distribution and expression of nephrin mRNA were examined by indirect immunofluorescence and semi-quantity RT-PCR. Results In the AN rats, the diffuse fusion and effacement of foot processes were observed at week 3. The fluorescence intensity of nephrin and the expression of nephrin mRNA significantly increased in the qufeng group and the prednisone group compared with the model group at the week 7 (P<0.01).Conclusion Abnormal expression of nephrin is the important molecular mechanism that leads to the occurrence and development of proteinuria in AN rats. Qufengtongluo recipe has effect on nephrotic syndrome through altering the expression and distribution of nephrin in glomerulus.
5.Expression and purification of r ecombinant circumsporozoite proteins of Plasmodium falciparum and evaluation of their binding activities to hepatocytes
Lili QU ; Yanyun WANG ; Lailing GONG ; Peng SHEN ; Jin ZHU ; Jin SI
Chinese Journal of Microbiology and Immunology 2014;(5):349-353
Objective To amplify four fragments of circumsporozoite ( CSP) protein gene from Plasmodium falciparum FCC1/HN strain and express recombinant CSP proteins in prokaryotic vector pET28 a/EGFP for further evaluation of their binding activities to hepatic cells .Methods Four pairs of primers were designed according to the cDNA sequence of CSP protein from Plasmodium falciparum FCC1/HN strain and used to amplify the gene fragments by PCR .The cloned gene fragments were inserted into pET28a/EGFP to construct the recombinant expression plasmids .The transformed E.coli BL21 strains carry-ing expression plasmids were induced by IPTG to express CPS proteins .The recombinant CSP proteins were purified with Ni2+chelating HiTrap HP column and detected by SDS-PAGE.The binding activities of the ex-pressed proteins to different tissues were also detected .Results Four gene fragments encoding CSP protein were successfully amplified and expressed in E.coil BL21 strain as fusion protein CSR1a-EGFP, CSR1b-EGFP, CSR2a-EGFP and CSR2b-EGFP with a relative molecular mass of about 39×103, 31×103, 33×103 and 30 ×10 3 , respectively .The purified fusion proteins reacted specifically with Plasmodium falciparum-posi-tive serum samples.Moreover, the recombinant protein CSR2a-EGFP could bind to the hepatic cells specif-ically rather than other cells.Conclusion The purified recombinant CSR2a-EGFP protein has a strong binding activity to hepatocytes , indicating its potential value as a targeting molecule for hepatic gene therapy .
6.Effects of Pricking Bloodletting Therapy on Local Anti-inflammatory Cytokine in Rats with Acute Gouty Arthritis on Ankle
Kailu LV ; Youbing XIA ; Jie CHENG ; Yanyun MU ; Bingmei ZHU ; Xi LUO ; Sha LIANG ; Keqing ZHUANG
Chinese Journal of Rehabilitation Theory and Practice 2015;21(3):276-279
Objective To explore the anti- inflammatory of pricking blood therapy in acute gouty arthritis rats. Methods 60 Sprague-Dawley rats were equally divided into normal group, bloodletting normal group, sham group, arthritis group, bloodletting group and ibuprofen group. The acute gouty arthritis model was established with injecting uric acid sodium salt into the right ankle joint cavity. The ibuprofen group was administrated with ibuprofen intragastrically, the bloodletting normal group and bloodletting group were pricked the right Kunlun (BL60) acupoint. The cross section diameter of the right ankle joint were measured before and after treatment. Levels of mRNA and protein of interleukin (IL)-10 and IL-4 expressed in ankle were determined with RT-PCR and Western blotting Results The cross section diameter increased in the bloodletting group compared with the normal group after treatment (P<0.05), and decreased (P<0.05) compared with the arthritis group and the ibuprofen group, while the expression of IL-10 mRNA increased (P<0.05) compared with the normal group, the arthritis group and the ibuprofen group, as well as the IL-10 protein compared with the normal group and the arthritis group (P< 0.05). The expression of IL-4 mRNA and protein increased without significance (P>0.05) in the bloodletting group compared with the normal group. Conclusion IL-10 may play a role of anti-inflammatory in pricking bloodletting therapy for acute gouty arthritis.
7.Study on Ecological Suitability of Scutellaria baicalensis Georgi in China Based on MaxEnt Model
Xiaoqiong XU ; Yanyun LU ; Ying ZHU ; Hao ZHU ; Qiangxia ZHENG ; Ling JIN
Chinese Journal of Information on Traditional Chinese Medicine 2024;31(2):1-5
Objective To understand the distribution of ecological suitability of Scutellaria baicalensis Georgi;To screen the main ecological factors affecting its distribution;To predict its suitable planting area in China.Methods A total of 231 batches of Scutellaria baicalensis Georgi were collected through the fourth national survey of TCM resources.The environment information of sampling points were recorded,and 55 ecological factors were analyzed by MaxEnt model and GIS.Results Rainfall,vegetation type and soil types had a greater influence on the distribution of Scutellaria baicalensis Georgi.The ecological suitable areas of Scutellaria baicalensis Georgi mainly concentrated in the eastern part of Shaanxi Province,the western part of Hebei Province and most areas of Chengde,the most part of Shanxi Province,the western part of Beijing,the western part of Liaoning Province,the central and eastern part of Shandong Province,the junction of Jiangsu and Anhui Province,the northern part of Yunnan Province,and the eastern and southern part of Sichuan Province.Conclusion The ecological suitability areas of Scutellaria baicalensis Georgi were classified in this study,and the results could provide reference for the selection of cultivation areas of Scutellaria baicalensis Georgi.
8.Cultivation and identification of mouse peritoneal and bone marrow-derived mast cells
Yixin SHAO ; Duoqin WANG ; Yanyun SHEN ; Yiqi ZHU ; Jinhua XU ; Hui TANG
Chinese Journal of Dermatology 2018;51(8):575-579
Objective To explore the in vitro culture methods for oriented differentiation of peritoneal cells and bone marrow cells into high-purity mast cells,and to identify the function of these mast cells.Methods Peritoneal cells and bone marrow cells were isolated from the peritoneal cavity lavages and femur of C57BL/6 mice,and cultured with both interleukin-3 (IL-3) and stem cell factor for 2 and 4 weeks respectively.Light microscopy was performed to observe the morphology of these cells,toluidine blue staining to identify the degree of maturity of these mast cells,and flow cytometry to measure the expression of cell surface markers C D 117 and FceR Ⅰ α.After the stimulation with compound 48/80 at different concentrations,the degranulation rate of mast cells was counted under the microscope,and β-hexosaminidase release rate was measured by spectrophotometry.Results After 2-or 4-week culture,the mouse peritoneal and bone marrow cells all manifested as refractive suspension cells of uniform size.Toluidine blue staining showed violaceous metachromatic granules in the cytoplasm of the two kinds of cells.The proportions of CD117 or FcεR Ⅰ α single-positive peritoneal and bone marrow-derived mast cells were all more than 95%,and the proportions of CD117/FcεR Ⅰ α double-positive peritoneal and bone marrow-derived mast cells were 97.68% ± 0.80% and 96.12% ± 0.76% respectively.The degranulation rates of mast cells in the 100-and 1 000-mg/L compound 48/80 groups significantly differed from those in the blank control group (all P < 0.01).Compared with the blank control group,the β-hexosaminidase release rates significantly increased in bone marrow-derived mast cells in the 100-mg/L compound 48/80 group and peritoneal mast cells in the 10-and 100-mg/L compound 48/80 groups (P < 0.01 or 0.05).Conclusion IL-3 and stem cell factor can co-induce the directed differentiation and proliferation of mouse bone marrow stem cells and peritoneal cells,so as to harvest highnuritv mature degranulated mast cells,and lay a foundation for subsequent cell biology research.
9.A survey on standardized training of trauma surgeons in Shanghai
Li ZHU ; Ying XU ; Yanyun CHEN ; Jian FAN ; Huamei YAN ; Li ZHANG
Chinese Journal of Orthopaedic Trauma 2020;22(11):983-988
Objective:To investigate the current state of standardized training in trauma surgeons in medical institutions in Shanghai.Methods:Questionnaire surveys, focus discussions and expert conferences were conducted to investigate the professional background, status of standardized training on trauma care knowledge, training needs and suggestions in 236 trauma surgeons in 25 Shanghai medical institutions.Results:The investigation revealed that only 59.3% (140/236) of the trauma surgeons had received a standardized training on trauma care knowledge. Of them, those who participated in the training by an international, domestic and local medical institution accounted for 26.4% (37/140), 47.1% (66/140) and 84.3%(118/140), respectively. Only 83 surgeons (70.3%) received regular training and most of them 66.3% (55/83) did in a low frequency of 1-2 times a year. Only 12.7% (15/118) of the surgeons received a training course of ≥48 classes (45 min per class) in the past 3 years. The training courses by medical institutions were mostly lectures on theoretical knowledge and training of a single skill while the simulated scenario drills accounted for less than 48.3%(57/118). The surgeons who had received a standardized training on trauma care were more likely to use their training knowledge to grade and score the patients with trauma, significantly more than those who had not( P<0.05). Conclusions:The coverage, time or frequency of standardized training on trauma care was not enough in Shanghai. The standardized training of trauma care surgeons should be strengthened in all medical institutions and be supervised by the management administration. A set of standardized materials and assessment standards for trauma care training should be formulated as soon as possible which fits the domestic conditions in China. Training bases should be established in Shanghai for standardized care of severe trauma and trauma specialists. A training system for trauma specialists should be established to promote traumatology in shanghai.
10.Detection trend of vaginal intraepithelial neoplasia diagnosed by colposcopy guided biopsy from 2013 to 2015
Qing CONG ; Qing WANG ; Shujun GAO ; Hongwei ZHANG ; Ming DU ; Feng XIE ; Jing DONG ; Hua FENG ; Ruilian ZHENG ; Min CHEN ; Caiying ZHU ; Wenjing DIAO ; Yu SONG ; Qisang GUO ; Yanyun LI ; Limei CHEN ; Yuankui CAO ; Long SUI
Chinese Journal of Obstetrics and Gynecology 2017;52(4):239-243
Objective To explore the detection trend of vaginal intraepithelial neoplasia(VaIN)of lower genital tract from 2013 to 2015. Methods A retrospective analysis was undertaken of colposcopy-directed biopsy of cervical, vaginal and vulvar intraepithelial neoplasia lesions include cervical intraepithelial neoplasia (CIN), VaIN and vulvar intraepithelial neoplasia (VIN) in Obstetrics and Gynecology Hospital of Fudan University from January 2013 to December 2015. Results (1) Overall data of CIN, VaIN and VIN:a total of 16732 cases were diagnosed of lower genital intraepithelial neoplasia in 3 years, accounting for 23.20% (16732/72128) of total colposcopy-directed biopsy cases. Among them, CIN, VaIN and VIN accounted for 19.48%(14053/72128), 2.67%(1923/72128), 1.05%(756/72128) of total colposcopy-directed biopsy cases of the lower genital tract, 83.99%(14053/16732), 11.49%(1923/16732), 4.52%(756/16732) of total lower genital intraepithelial neoplasia, respectively. (2) Annual data of CIN, VaIN and VIN from 2013 to 2015. The annual proportion of CIN in all intraepithelial neoplasia of lower gential tract was basically stable, consisting of 86.02%(3955/4598),83.25%(4795/5760) and 83.20%(5303/6374), respectively. The annual proportion of VaIN was gradually increasing, consisting of 8.09% (372/4598), 12.45%(717/5760) and 13.08%(834/6374), respectively. The annual proportion of VIN was gradually decreasing, consisting of 5.89% (271/4598), 4.31% (248/5760) and 3.72% (237/6374), respectively. Conclusion The increasing detection of VaIN from 2013 to 2015 might correlate with the increasing attention to inspection of the entire vaginal wall.