1.Inhibitory effects of microRNA-375 on biological behaviour of human retinal capillary endothelial cells induced by hypoxia
Jiang, ZHU ; Mei, REN ; Zhiguo, XU
Chinese Journal of Experimental Ophthalmology 2017;35(8):695-702
Background Studies showed that microRNA (miR)-375 suppresses the growth,apoptosis,migration and adhesion of tumor cells,and it plays a regulation to the changes of vascular endothelial growth factor (VEGF) in tumor tissue to arrest neovascularization.However,whether miR-375 intervenes the formation of new blood vessel in eyes is unelucidated.Objective This study was to explore the effects of miR-375 on human retinal capillary endothelial cells (HRCECs) function induced by hypoxia.Methods HRCECs were cultured using IMDM and divided into normal control group,CoCl2 model group,CoCl2 +miR-375 mimic group,CoCl2 +miR-375 mimic control group,CoCl2+miR-375 inhibitor group and CoCl2 +miR-375 inhibitor control group,and hypoxia cell models were created by adding 200 μmol/L CoCl2.MiR-375 and frizzled 4 (FZD4) small interfering RNA (siRNA) were transfected into the cells by 50 nmol/L miRNA lipidosome for 48 hours.The proliferation of the cells was detected by MTT assay;migrated number of the cells was examined by Transwell chamber assay;ELISA was employed to detect the concentrations of VEGF and VE-cadherin in the medium;the expression of β-catenin,cyclinD1,matrix metalloproteinase-2 (MMP2) and VEGF proteins were analyzed by Western blot;tube length of vessel formation was evaluated by Matrigel assay.Cultured cells were divided into normal control group,CoCl2 model group,CoCl2 +mock group and CoCl2 + FZD4 siRNA group,the relative expression of FZD4,a miR-375 targeted gene,was detected by luciferase reporter.Results The relative expression of miR-375 mRNA was significantly increased in the CoCl2 +miR-375 mimic group compared with the CoCl2 + miR-375 mimic control group and reduced in the CoCo2 + miR-375 inhibitor group compared with the CoCo2 + miR-375 inhibitor control group (t =-19.237,8.764,both at P<0.01),with a higher transfected efficacy for miR-375.The cell proliferative fold,migrated cell number,VEGF and VE-Cadherin contents in the medium and the tube length were significantly different among the CoCl2 model group,CoCl2 +miR-375 mimic group,CoCl2 +miR-375 mimic control group,CoCl2 +miR-375 inhibitor group and CoCl2 +miR-375 inhibitor control group (F =24.324,26.776,14.113,19.225,15.040,all at P<0.001),and those in the CoCl2 +miR-375 mimic group were evidently reduced in the CoCl2 +miR-375 mimic group compared with the CoCl2 +miR-375 mimic control group,while those in the CoCl2 +miR-375 inhibitor group were considerably elevated in comparison with the CoCl2 +miR-375 inhibitor control group (all at P<0.01).The expressions of β3-catenin,cyclinD1,MMP2 and VEGF protein were significantly different among the normal control group,CoCl2 model group,CoCl2 +miR-375 mimic group,CoCl2+miR-375 mimic control group,CoCl2 +miR-375 inhibitor group and CoCl2 +miR-375 inhibitor control group (F=11.753,13.283,16.770,10.334,all at P<0.001).In addition,the cell proliferative fold,migrated cell number and the tube length were significantly increased in the CoCl2 model group and CoCl2+mock group,and those in the CoCl2+FZD4 siRNA group were decreased in comparison with the CoCl2 +mock group (all at P<0.05).Conclusions MiR-375 inhibits the growth,migration and tube formation ability of HRCECs in hypoxic status probably by regulating the activation of Wnt pathway via directly targeting FZD4.
2.Development of Concept of Internet-related Social-psychological Health for Undergraduates
Haiyan ZHU ; Feng ZHANG ; Mowei SHEN ; Mei XU
Chinese Journal of Clinical Psychology 1993;0(01):-
Objective: To explore the structure of concept of the Internet-related social-psychological health for undergraduates and develop The Internet-related Social-psychological Health Scale for Undergraduates (ISHS-CS). Methods: Employing exploratory factor analysis and confirmatory factor analysis of the data of ISHS-CS.based on 2 samples of 511 and 581 of undergraduates respectively. Results: ① The structure of Internet-related social-psychological health for undergraduates consisted of 5 primary factors, viz. loneliness, social involvement, general depression, life happiness and life satisfaction. These five factors could be generalized into 2 higher-order dimensions, namely social health and psychological health. The ISHS-CS had satisfactory item validity, internal consistent reliability, construct validity and criterion-related validity. ② Relation of time of Internet use to Internet-related social-psychological health was unremarkable, but, some relation between frequency of internet use and social-psychological health was found. ③ Compared with the undergraduates based on Social-affective motive of Internet-use, those based on Information-acquisition motive possessed higher level of Internet-related social-psychological health. Conclusion: The concept of Internet-related social-psychological health was a reasonable construct for undergraduates, and the ISHS-CS could serve as a measurement of Internet-related social-psychological health for undergraduates.
4.Suppressors of cytokine signaling 3 inhibits cell viability of retinal ganglion cells after optic nerve injury
Xiaojie DANG ; Mei REN ; Jiang ZHU ; Zhiguo XU
Recent Advances in Ophthalmology 2017;37(3):225-229
Objective To explore the effect and potential mechanism of suppressors of cytokine signaling 3 (SOCS3) knockout on cell viability and apoptosis of retinal ganglion cells (RGCs) after optic nerve injury.Methods The optic nerve transection was used to construct optic nerve injury model of rats,and RGCs were isolated after optic nerve injury.The experimental animals were divided into optic nerve transection injury (ONT) group and sham-operation (Sham) group.The expression of SOCS3 in RGCs was detected by Western blot and RT-PCR in each group.Subsequently,SOCS3 siRNA was transfected into RGCs of Sham group and ONT group,and the experimental were further subdivided into blank control group,negative control group and SOCS3 silence groups.Cell viability was measured by CCK8 and MTr methods.Apoptosis was detected by Hoechst 33342 staining and flow cytometry.Furthermore,the mTOR siRNA and SOCS3 siRNA were co-transfected into RGCs,and cell viability and apoptosis were detected.Results The expression of SOCS3 was dramatically increased at 3 days after injury in the ONT group when compared with Sham group (P =0.049),and it showed an increased tendency gradually along with the extension of injury time.Compared with the blank control in the ONT group,SOCS3 silence markedly promoted cell viability [(49.47 ± 7.35) % vs.(73.24 ± 8.70) %],reduced cell growth inhibition [(27.25 ±0.75)% vs.(10.96 ± 1.07)%] and apoptosis [(23.06 ± 1.43)% vs.(10.65 ± 1.77)%].The result of Hoechst 33342 staining indicated that SOCS3 silence ameliorated the cell apoptosis induced by ONT.In addition,SOCS3 silence significantly improved pS6 expression at 2 weeks after injury,and mTOR and SOCS3 co-silence reduced cell viability,increased cell growth inhibition and apoptosis compared with SOCS3 silence group after injury.Conclusion SOCS3 silence promotes injury-induced cell viability of RGCs and suppresses injury-induced apoptosis of RGCs via up-regulating mTOR activity in the later period of injury.
5.Expression of P450 aromatase in endometrial carcinoma
Xue-Mei ZOU ; Kai WU ; Zhu-Hong XU ;
Cancer Research and Clinic 1997;0(03):-
0.05).Immunohistochemical staining for intratumoral aromatase in endometrial cancer was positive,21(42 %)in stromal cells.The expression of P450 aromatase in stromal cells correlated positively with advanced surgical stage and histologic grade,indepedent on muscular invasion and lymph node metastasis.Conclusion Aromatase P450 play an important function in establishment and devel- opment of the endometrioid endometrial cancer.The expression of P450 aromatase in intratumoral stromal cells correlated positively with the development and prognosis of endometrioid endometrial cancer.
6.Application of He-Ne laser combined with TDP irradiation in the treatment of herpes zoster ophthalmicus
Qi-Hua, XU ; Jian-Gang, ZHU ; Mei-Fen, CHEN
International Eye Science 2017;17(7):1371-1373
AIM: To evaluate the effect of He-Ne laser combined with TDP irradiation in the treatment of herpes zoster ophthalmicus.METHODS: Totally 22 patients (22 eyes) with herpes zoster ophthalmicus were treated by He-Ne laser irradiation combined with TDP (Group A).Another 22 patients (22 eyes) with herpes zoster ophthalmicus (Group B) were treated by medication.The duration of the disease, the incidence of complications, and the time of pain relief were compared between the two groups.RESULTS: The cure rate of Group A was 91%, that of Group B was 73%, there was no significant difference between the two groups (x2=1.375, P>0.05).The average cure time of Group A was 8±2.22d, Group B was 12±1.88d, the difference between the two groups was statistically significant (t=5.22, P<0.05).The complication rate of Group A was 18%, Group B was 59%, the difference between the two groups was statistically significant (x2=6.86, P<0.05).The average pain relief time of Group A was 5±1.23d, Group B was 10±1.34d, the difference between the two groups was statistically significant (t=11.17, P<0.05).CONCLUSION: He-Ne laser combined with TDP irradiation can shorten the treatment time of herpes zoster ophthalmicus, shorten the course of disease, reduce the incidence of complications, relieve pain, with no significant effect on the cure rate of herpes zoster ophthalmicus.
7.Diagnosis and Treatment Value of Duck Criterien on Infective Endocarditis Judged in Children
wei-hua, ZHU ; xia, XU ; xian-mei, HUANG
Journal of Applied Clinical Pediatrics 1986;0(01):-
Objective In order to explore practical values of the revised Duck criteria for diagnosis and treatment of pediatric infective endocarditis(IE).Methods Seventy-three children′s cases diagnosed and treatmented as IE complicated with congenital heart defects in the past 22 years were collected to make retrospective analysis according to the Duck criteria.Results In 73 patients,a definite diagnosis of IE was made in 37 patients(51%),16(43%) of which proved by the pathologic lesions during the operations.Eight patients(22%) met two major criteria,13 patients(35%) met one major and more than 3 minor criteria.36 patients(49%) were diagnosed as possible IE.Forty-five patients(62%) were cured using antibiotic therapy.Sixteen cases(21%) were failure in antibiotic treatment,of whom 16 patients were operated by cutting off the detection of vegetation and repairing the heart malformation.Tweleve cases(17%) were died,one of which was died after the operation.Conclusions IE is still a significant complication of congenital heart disease.Duck criteria is relative rigid in sensitivity,but it is high in specificity.When the vegetation isn′t large enough in shape,revised Duck criteria is difficult to(diagnose) early.The surgery treatment is optimistic.To combine the medicine with surgery can contributed to decrease mortality rate.
8.Study on the ?-lactamases in eight pan-drug-resistant citrobacter freundi isolates
Jun LUO ; De-Mei ZHU ; Xiao-Gang XU ;
Chinese Journal of Infectious Diseases 2001;0(05):-
Objective Study the production of the?-lactamases in eight pan-resistant citrobact- er freandi and their epidemic characteristics.Methods Modified Hodge test and EDTA-disk syner- gy test were used to screen Metallo-?-lactarnases,and isoelectric focusing to estimate the production of ESBLs and AmpC enzymes.ESBLs,AmpC,MBL genes were amplified and analyzed by PCR and DNA sequencing.Molecular epidemics were investigated by PFGE.Results All the 8 strains pro- duced TEM-1,CTX-M-14,4 of them at the same time producing CTX-M-3.No Plasmid mediated AmpC was found.Furthermore,a new subtype of MBL with one amino acid different from IMP-8 was de- tected.All the 8 strains belong to the same PFGE type.Conclusions Pan-drug-resistant citrobacter freundi produced more than one kind of?-lactamases.All these isolates were clonally related.
9.Salmonella choleraesuis infection in children: chinical analysis of 21 cases.
Hui ZHOU ; Jian-Mei ZHAO ; Mei-Yu XU ; Shao-Peng ZHU ; Bin LI
Chinese Journal of Contemporary Pediatrics 2009;11(12):1012-1013
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10.Effect of Acupuncture on ER and PR Expressions in Rats with DMBA-induced Mammary Cancer
Jiawei CAO ; Mei HUANG ; Jing YAN ; Jinlong XU ; Zengrong YANG ; Kun HUANG ; Zhu ZHU ; Rong ZHAO
Shanghai Journal of Acupuncture and Moxibustion 2016;35(3):344-348
Objective To investigate the effect of acupuncture at Zusanli, Sanyinjiao and Danzhong on mammary estrogen receptor (ER) and progesterone receptor (PR) expressions in rats with dimethylbenzanthracine (DMBA)-induced mammary cancer. Methods One hundred and twenty female SD rats aged 6-8 weeks were randomized into a model group of 60 rats and a blank group of 30 rats. The model group received an oral gavage of DMBA for model making. The blank group received an oral gavage of equal volume of sesame oil. At 15 weeks after model making, the model group of rats was randomized into treatment and control groups. The treatment group received acupuncture at Zusanli, Sanyinjiao and Danzhong, and the control and blank groups, only the same grasp and release. After the completion of acupuncture treatment (twenty-seventh week), abdominal venous blood was taken and serum tumor markers were determined by electrochemiluminescence immunoassay. Tumor masses were counted and their shapes were recorded. The mass was taken and its height, maximum diameter and vertical diameter were measured using a 1 mm precision vernier caliper. Pathological changes in tumor tissues, and ER and PR positive areas and mean optical densities were observed under an Olympus optical microscope.Results There were statistically significant post-treatment differences in the average number and volume of mammary tumors between the treatment group and the control or blank group (P<0.01,P<0.05) and between the control and blank groups (P<0.01). There were statistically significant post-treatment differences in the concentrations of various tumor markers (CA724, CA125, CA199, AEP, CA15-3, CEA and CA50) between the treatment or control group and the blank group (P<0.01,P<0.05) and between the control and blank groups (P<0.01). There was a statistically significant post-treatment difference in CA15-3 concentration between the treatment and control groups (P<0.01). There were statistically significant post-treatment differences in ER and PR positive areas and mean optical densities between the treatment group and the control or blank group (P<0.01) and between the control and blank groups (P<0.01).Conclusions Acupuncture can reduce the occurrence of rat DMBA-induced mammary tumor (including the number and volumes of the tumors). The mechanism of its action may be related to decreasing the concentrations of tumor markers CA724, CA125, CA199, CA15-3, AEP, CEA and CA50 and especially to decreasing CA15-3 concentration, and ER and PR positive areas and mean optical densities.