1.Effect of torasemide or furosemide combined with mannitol in treatment of acute cerebral hemorrhage patients with cerebral edema
Yanbei YANG ; Jingcun DAI ; Xiao DONG
Chinese Journal of Postgraduates of Medicine 2014;37(6):42-44
Objective To compare the effect of torasemide or furosemide combined with mannitol in the treatment of acute cerebral hemorrhage patients with cerebral edema.Methods One hundred and sixty patients with cerebral hemorrhage were selected,and divided into torasemide group and furosemide group according to different treatment methods,40 cases in each.The torasemide group was treated with torasemide combined with 20% mannitol,the furosemide group was treated with furosemide combined with 20% mannitol.The curative effect,mannitol dosage,edema volume,24 h urine and adverse reactions in two groups were compared.Results The total effective in torasemide group was higher than that in furosemide group [97.5% (78/80) vs.77.5% (62/80)],mannitol dosage was less than that in furesemide group [(347.5 ±32.5) ml vs.(438.2 ±30.7) ml],the incidence of adverse reactions was lower than that in furosemide group [7.5%(6/80) vs.27.5%(22/80)],which reached statistical significance (P< 0.01 or < 0.05).The edema volume in the 7th,14th day in torasemide group was less than those in furosemide group [(21.1 ±3.4) ml vs.(23.3 ±4.8) ml,(17.6 ±4.5) ml vs.(22.4 ±5.6) ml],the 24 h urine in the 3re,7th,14th day were more than those in furosemide group [(3 684 ±528) ml vs.(3 429 ±592) ml,(3 854 ± 746) ml vs.(3 185 ±490) ml,(3 742 ±t658) ml vs.(2 251 ± 324) ml],which reached statistical significance (P < 0.05).Conclusions Torasemide in treatment of acute cerebral hemorrhage patients has better efficacy and safety.It is better than furosemide.
2.Aspirin inhibits tumor cell metastasis mediated by HGF/c-Met
Xiao-yang DAI ; Si-kang CHEN ; Jin-xin CHE
Acta Pharmaceutica Sinica 2022;57(10):2985-2994
In this study, we investigated the effect of aspirin on tumor biological effects mediated by hepatocyte growth factor/cellular-mesenchymal-epithelial transition factor (HGF/c-Met) axis, and preliminarily explored the molecular mechanism of inhibiting tumor metastasis by aspirin. The binding of aspirin to c-Met was predicted by molecular docking; cellular thermal shift assay (CETSA) was used to verify the binding of aspirin to c-Met at the cellular level. The inhibitory effect of aspirin on c-Met kinase was detected by kinase activity; Western blot, cell scattering test, cell branching morphogenesis and Transwell test were used to evaluate the cell signal transduction, morphological changes and migration and invasion ability. The results showed that aspirin could effectively inhibit the kinase activity of c-Met with a half inhibitory concentration of 0.95 mmol·L-1. The results of docking showed that aspirin could bind to the ATP pocket of c-Met protein, and the main binding sites were Tyr1230, Tyr1159 and Met1229. The CETSA test also showed that aspirin could form binding complex with c-Met protein. Western blot results showed that aspirin could inhibit the up-regulation of phosphorylated Met stimulated by HGF in a concentration-dependent manner. The results of cell scattering test showed that aspirin could block HGF/c-Met promoted cell scattering in a concentration dependent manner. Aspirin could almost completely block the biological function mediated by c-Met activation at the concentration of 4 mmol·L-1, and this effect was independent of HGF. Similarly, the results of MDCK cell branching morphogenesis experiment showed that aspirin could inhibit HGF/c-Met mediated invasive growth in a concentration dependent manner. The results of Transwell test showed that aspirin could block HGF/c-Met mediated cell migration and invasion in a concentration-dependent manner. Aspirin could almost completely block the biological function mediated by c-Met activation at the concentration of 4 mmol·L-1, and this effect was independent of HGF. The above results indicate that aspirin can bind to c-Met, thereby blocking the biological effects mediated by HGF/c-Met, and inhibiting tumor metastasis. This study revealed the new biological function of aspirin, and provided a new theoretical basis for a comprehensive understanding of the anti-metastatic effect of aspirin.
3.Pseudocyst of spleen with widespread calcification: report of a case.
Xiao-lu YUAN ; Yi-fei DAI ; Ji-zhou YANG
Chinese Journal of Pathology 2011;40(11):782-782
Adult
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Calcinosis
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diagnostic imaging
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pathology
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surgery
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Cysts
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diagnostic imaging
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pathology
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surgery
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Diagnosis, Differential
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Female
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Humans
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Lymphatic Vessel Tumors
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pathology
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Mucocele
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pathology
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Parasitic Diseases
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pathology
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Spleen
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diagnostic imaging
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Splenectomy
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Splenic Diseases
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diagnostic imaging
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pathology
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surgery
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Tomography, X-Ray Computed
4.Establishment of cell model for determining activity of insulin receptor kinase by STAT5b responsive reporter gene
Qingyuan DAI ; Xianggui CHEN ; Xiao YANG ; Jing LUO
Chinese Pharmacological Bulletin 1987;0(02):-
Aim To develop a simple and rapid method to monitor insulin receptor kinase activity and provide a novel cell-based model for screening anti-diabetes drugs.Methods CHO cells were co-transfected by plasmids which respectively contained insulin receptor gene,STAT5b gene and luciferase gene driven by STAT5 response elements.The expression of exogenous gene in transfected cells was examined by RT-PCR.The transfected cells were treated by insulin,and then the concentration and time-dependent response of luciferase expression to insulin induction was examined.Moreover,the specificity was identified by AG1024 treatment and PTP1B gene transfection.Results Expressions of insulin receptor and STAT5b were detected in the transfected CHO cells.The expression of luciferase in transfected cells was induced by insulin in concentration and time-dependent way.The maximal induction fold was 6.25.Moreover,the inducible expression of luciferase by insulin could be specifically blocked by tyrphostin AG1024,an inhibitor of insulin receptor kinase,or co-transfected PTP1B gene.Conclusions The insulin receptor kinase activity can be detected by expression of reporter gene with high sensitivity and specificity in this cell model,and with potential value in high throughput screening for insulin receptor activators and sensitizers.
5.Regulation effects of electroacupuncture at "Sanyinjiao" (SP 6) on bladder function in rats with overactive bladder after cystostomy.
Jing YANG ; Xiu DAI ; Yang WU ; Xiao-dong YANG ; Ka-ming HU ; Bo XIANG
Chinese Acupuncture & Moxibustion 2014;34(10):998-1002
OBJECTIVETo observe the effects of electroacupuncture (EA) at "Sanyinjiao" (SP 6) on urodynamics indices in rats with overactive bladder (OAB) after cystostomy, and to explore its regulation mechanism on bladder function.
METHODSForty-eight Sprague-Dawley female rats which received cystostomy were randomly divided into a blank group (group A), a blank Sanyinjiao group (group B), a blank non-acupoint group (group C), a model group (group D), a model Sanyinjiao group (group E) and a model non-acupoint group (group F), 8 rats in each one. The model of OAB was established with 1% acetic acid solution perfused into the bladder in the group D, group E and group F. No treatment was given to the group A and group D. Acupuncture was applied at bilateral "Sanyinjiao" (SP 6) in the group B and group E, followed by EA after the arrival of qi. Acupuncture was applied at bilateral non-acupoint in the group C and group F, followed by EA with continuous wave, 2 Hz of frequency for 30 min. The treatment was given for continuous 5 urination cycles. The BL-420 E+ biological function experiment system was used to measure and record the changes of indices of bladder pressure and urodynamics.
RESULTSCompared with the group A, the bladder capacity and urine output in the group B were significantly increased (both P<0.05), and the urination rate was increased in the group C (P<0.05); the differences of each index between group C and group B were not statistically significant (all P>0.05). Compared with the group D, the capacity pressure, bladder capacity, detrusor pressure, urinary output and urination rate in the group E were all increased (all P<0.05). Compared with the group F, the capacity pressure and detrusor pressure in the group E were increased (both P<0.05).
CONCLUSIONThe EA at "Sanyinjiao" (SP 6) could significantly improve urine function in rats with OAB after cystostomy, but its regulation effect on urination is not obvious in rats with non-OAB.
Acupuncture Points ; Animals ; Cystostomy ; Disease Models, Animal ; Electroacupuncture ; Female ; Humans ; Rats ; Rats, Sprague-Dawley ; Urinary Bladder ; physiopathology ; surgery ; Urinary Bladder, Overactive ; physiopathology ; surgery ; therapy
6.Randomized study of kezhi Capsules in Treating Nonalconolic Fatty Liver
Yuewu YANG ; Gemin XIAO ; Baiming ZHAO ; Hongzhi YANG ; Min DAI ; Lichun TENG
The Journal of Practical Medicine 2014;(4):638-640
Objective To evaluate the effect and side effects of Kezhi capsule in short-term treatment of nonalcoholic fatty liver disease (NAFLD). Methods 60 NAFLD cases of outpatients according to the inclusion criteria of were randomly assigned to two groups: the treated group-30cases with the prescription of Kezhi capsule , and the control group-30cases with the prescription of Xuezhikang. The treatment Course of taking Kezhi capusule (1.25 g, tid, po) and Xuezhikang(0.6 g, bid, po)was 24 weeks. Results After treatment in both groups we saw the significant decrease of the levels of ALT, AST, TC, TG, LDL-C, CREAT, BUN, BMI and TCM Syndromes scores, and the improvement of the ultrasonographic findings of liver steatosis. In the Xuezhikang group we saw higher decrease of TC and TG than the Kezhi capsule group with statistic difference (P < 0.05), while in Kezhi capsule group we saw higher decrease of BMI , TCM Syndromes scores and the improvement of the ultrasonographic findings of liver steatosis than the xuezhikang group with statistic difference (P < 0.05). Conclusions The results show that kezhi capsule is effective for the treatment of NAFLD without obvious side effects.
7.Establishment of a mouse model of kidney deficiency induced by oral administration of hydrocortisone and evaluation of related factors
Bing DAI ; Jiani ZHANG ; Menglin YANG ; Yuxing LI ; Zizeng XIAO ; Lei YANG ; Qiang WEI
Acta Laboratorium Animalis Scientia Sinica 2017;25(1):70-73
Objective To establish a mouse model of kidney-yin and kidney?yang deficiency after oral administra?tion of hydrocortisone, and to explore the related evaluation factors. Methods The model was established by oral adminis?tration of hydrocortisone to induce kidney?yin and kidney?yang deficiency in mice. The survival and body weight of the mice were observed. The serum content of adrenal cortical hormone ( ACTH) , cortisol ( Cor. ) in the hypothalamic?pituitary?ad?renal (HPA) axis, and thyroid stimulating hormone (TSH), triiodothyronine (T3), thyrox (T4) in the hypothalamic?pi?tuitary?thyroid (HPT) axis, follicle?stimulating hormone (FSH), estradiol (E2), testosterone (T) in the hypothalamic?pituitary?gonadal ( HPG) axis were determined by radioimmunoassay. Results The body weight of kidney?yin and kidney?yang mice were decreased, the serum ACTH, Cor, TSH, T3, T4 contents were decreased, the serum FSH, E2, T contents were increased in the kidney?yang deficiency model mce ( P<0. 01 ) , and those parameters in the kidney?yin deficiency model mice were changed in opposite direction. Conclusions It is found that the hormone levels of ACTH, Cor, TSH, T3, T4, FSH, E2 and T in kidney deficiency mice are changed, and cortisol can be used as an important index to evaluate the model of kidney deficiency induced by glucocorticoid.
8.Preparation and identification of scFv and bsFv against transferrin receptor.
Jing, LIU ; Daiwen, XIAO ; Xiaoou, ZHOU ; Xue, WEN ; Hong, DAI ; Zhihua, WANG ; Xin, SHEN ; Wei, DAI ; Daofeng, YANG ; Guanxin, SHEN
Journal of Huazhong University of Science and Technology (Medical Sciences) 2008;28(6):621-5
To obtain single chain variable fragment (scFv) and bivalent single chain variable fragment (bsFv) against transferrin receptor, up-stream and down-stream primers were designed according to the complementary sequences of FR1 region of variable heavy (VH) and FR4 of variable light (VL), respectively, which contained inter-linker G4S and the restriction endonuclease SfiI, AscI and NotI. Two pieces of scFv fragments were first amplified through PCR and then inserted into plasmid pAB1, which could express scFv protein once induced by IPTG in the host bacteria. To express scFv and bsFv, E. coli TG1 was cultured in LB broth and was induced by IPTG. The restriction enzyme digestion map and DNA sequencing demonstrated that scFv and bsFv genes were successfully inserted into the expression plasmid. SDS-PAGE and Western blotting revealed the protein band at 35kD and 60kD, which were consistent with the molecular weight of scFv and bsFv respectively. Flow cytometry showed that scFv and bsFv harbored the specific binding activity with TfR expressed in various tumor cells, and the avidity of bsFv was higher than that of the parent scFv.
Base Sequence
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Cloning, Molecular
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Escherichia coli/genetics
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Escherichia coli/metabolism
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Genetic Vectors/genetics
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Hep G2 Cells
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K562 Cells
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Molecular Sequence Data
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Receptors, Transferrin/*immunology
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Recombinant Fusion Proteins/biosynthesis
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Recombinant Fusion Proteins/genetics
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Single-Chain Antibodies/*biosynthesis
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Single-Chain Antibodies/genetics
9.Not Available.
Ke ke DAI ; Yang LI ; Xiao mei QIAN ; Hong xi HUANG
Journal of Forensic Medicine 2022;38(4):565-567
10.Epidemiological characteristics of influenza in Mianyang, Sichuan, 2019-2021
WEN Yan ; CHEN Hua ; LIU Shi-an ; YANG Xiao-rong ; CHEN Guo ; DAI Yu-ke
China Tropical Medicine 2023;23(1):64-
Objective To understand the epidemiological and etiological characteristics of influenza in Mianyang City
from 2019 to 2021, so as to provide a basis for the prevention and control of influenza. Methods Influenza surveillance data
in Mianyang City from 2019 to 2021 were collected and analyzed statistically. Results A total of 55 970 cases of influenza
were reported in Mianyang City from 2019 to 2021, with an average annual incidence of 388.08/100 000. A total of 103 723
cases of influenza -like illness cases (ILI) were reported, with an average annual ILI% of 3.58%. The incidence, ILI% , and
positive detection rates of influenza were all far higher than those in the corresponding period in 2019. The classification of the
population is mainly composed of students under the age of 15. The top three reported cases were Fucheng District (20 118,
35.94%), Youxian District (6 394, 11.42%) and Jiangyou District (5 800, 10.36%). 10 126 samples of ILI were received and
detected, with a positive rate of 19.53%, the positive rate of ILI samples was mainly students under 15 years old. The dominant
strains of influenza viruses showed an alternating trend over the years, and A (H3) was the predominant type in 2019. Except for
2 A (H9) strains detected in 2021, the rest were all BV strains. Due to the impact of COVID-19 in 2020, the positive detection
rate was low throughout the year. 43 outbreaks of ILI were reported, which were mainly occurred in winter, and most of them
were in primary schools. Conclusion From 2019 to 2021, the characteristics of cases, ILI, pathogen surveillance and
outbreak events of influenza in Mianyang City are basically the same, with students under 15 years of age and schools
remaining the key population and sites of concern. the importance of non-pharmaceutical interventions for influenza prevention
and control is further evidenced by the low incidence of influenza during the COVID-19 pandemic.