1.Effects of electroacupuncture on hippocampal epileptic burst discharges induced by intracerebroventricular injection of kainic acid in the rat
Journal of Third Military Medical University 1983;0(03):-
Epilepsy induced by intracerebroventricular injection of kainic acid in the rat could be attenuated by electroacupuncture(EA)at the "Du Mo point" since EA resulted in a reduction of the frequency and amplitude of the hippocampal EEG especially in the 1st min after EA.No unsynchronization of the hippocampal EEG occurred before or after EA.The hippocampal unit discharges after intracerebroventricular injection of kainic acid were classified into positive units,negative units and indifferent units,The positive units were inhibited by EA while the negative units,on the contrary,were activated.The positive units(21%)and the indifferent units(33%)were converted into negative units by EA.At the same time,EA reduced the NSEB value and IBSF value of hippocampal epileptic burst discharges.On the basis of these findings,it is believed that the inhibition of the amplitude of hippocampal epileptic EEG by EA plays an important role of the antiepileptic action of EA,hippocampal negative units are one of the factors of antiepileptic action,and EA can regulate the intrinsic characteristics of epileptic neurones.
2.Self - consistency and Congruence of Servicemen
Yaqin LIAO ; Zhengzhi FENG ; Benli XIA
Chinese Mental Health Journal 1991;0(05):-
hObjective: To explore the character and its relevant factors of self- consistency and congruence of servicemen. Methods: 12221 servicemen were assessed by Self-consistency and Congruence Survey (SCCS), SCL -90, CSQ and common data forms. Results: ①The self - consistency and congruence level of servicemen was low (the mean of the total scores were 90. 0 ? 14. 8) .②There were significant different self - consistency among the different positions. The total scores of SCCS of officers were 86. 3 ? 14. 6, that of petty officers were 91. 6 ? 13. 8 and that of soldiers were 94. 0 ? 13. 2 ( P
3.An experiment study on myocardial regeneration with implantation of bone marrow cells into infarct myocardium
Feng LIN ; Chongxian LIAO ; Yunbin YE
Chinese Journal of Thoracic and Cardiovascular Surgery 2003;0(06):-
Objective: To study the effect of bone marrow cells on myocardial regeneration. Methods: Bone marrow cells were implanted into the acute myocardial infarct via topical injection. Specimens were harvested at 1st, 2nd, 4th, 8th weeks after bone marrow cells implantation for morphologic examination. Results: Bone marrow cells with fluorescence had been observed in the implanted site. A portion of the implanted cells had differentiated into myogenic cells. The regenerating myocardial cells observed by electron micrography had been connected with the host myocardium through intercalated discs. The infarct size was significantly smaller in implant group. Conclusion: This study suggested that bone marrow cells are capable to differentiate and regenerate into myocardial cells in the acute myocardial infarct sites and reduce size of infarct.
4.Glucocorticoid combined with mycophenolate mofetil versus cyclophosphamide in the treatment for adult refractory nephrotic syndrome:a Meta-analysis
Wei FENG ; Rongwei TANG ; Yunhua LIAO
Tianjin Medical Journal 2015;43(5):559-565
Objective To systematically review the efficacy and safety of mycophenolate mofetil versus cyclophosphamide in adults with refractory nephrotic syndrome. Methods The randomized controlled trials of mycophenolate mofetil and cyclophosphamide treatment for refractory nephrotic syndrome were searched from Cochrane library, PubMed, Embase, Wanfang, VIP and CNKI till March 2014. The relevant studies were screened according to inclusion criteria and exclusion criteria. The quality of the included studies was evaluated. Meta-analyses were performed by using RevMan 5.2 software. The indexes were analyzed including the complete remission rate, efficiency, serum albumin, and adverse reaction after completing the treatment for adults with refractory nephrotic syndrome. Results There were 9 RCTs, a total of 467 patients were enrolled. The result of the meta-analysis showed that mycophenolate mofetil could significantly increase complete remission rate (RR=1.45, 95%CI=1.17~1.81, P=0.000 7) and efficiency rate (RR=1.23, 95%CI=1.11~1.36, P<0.000 1). It can also enhance the level of serum albumin (WMD=2.73, 95%CI=1.42~4.04, P<0.000 1) and decrease 24-hour urinary protein (SMD=-0.63, 95%CI=-1.16~-0.10, P=0.02) compared with cyclophosphamide in the treatment of refractory nephrotic syndrome. There was no significant difference in the serum level of cholesterol between mycophenolate mofetil group and cyclophosphamide group (SMD=0.31, 95%CI=-0.23~0.84, P=0.26 ). The incidence rates of liver dysfunction (RR=0.13,95%CI=0.06~0.28, P<0.000 01), leukopenia (RR=0.10, 95%CI=0.04~0.23, P<0.000 01), gastrointestinal reaction (RR=0.21, 95%CI=0.11~0.39, P<0.000 01) and alopecia (RR=0.08, 95%CI=0.02~0.29, P<0.000 01) were significantly lower in mycophenolate mofetil group than those of cyclophosphamide group. There were no significant differences in respiratory tract infection rate (RR=0.68, 95%CI=0.41~1.14, P=0.14) and lung infection rate (RR=0.58, 95%CI=0.31~1.08, P=0.09) between the two groups. Conclusion The safety and efficacy are better in the treatment of refractory nephrotic syndrome using mycophenolate mofetil than that of cyclophosphamide.
5.Expression of Notch1, Jagged1 and NICD in epithelial ovarian carcinomas and a preliminary study on the activity of gamma-secretase in epithelial ovarian carcinoma cell lines
Zhaoyi FENG ; Hongwu WEN ; Qinping LIAO
Chinese Journal of Obstetrics and Gynecology 2014;49(10):780-786
Objective To study the expression of Notch 1,Jagged1 and Notch intracellular domain (NICD) in epithelial ovarian carcinoma tissues and analyze the clinical significance.To explore the activity of γ-secretase in epithelial ovarian carcinoma cell line SKOV3 and the effect of N-[N-(3,5-dil uorophenacetyl)-L-alanyl]-S-phenylglycine t-butyl ester (DAPT),a γ-secretase inhibitor on the activity of γ-secretase in SKOV3.Methods Immunohistochemistry staining method was performed in 43 patients with epithelial ovarian carcinoma and 11 patients with benign epithelial ovarian tumor to detect the expression of Notch1,Jagged1 and NICD.The differences of expressionof Notch1,Jagged1 and NICD between malignant and benign ovarian tumors was compared and alsoanalyzed the correlation with clinicopathological parameters of ovarian carcinoma.Human serous ovarian cancer cell line SKOV3 and immortalized nontumorigenic ovarian epithelial cell line T29 were incubated in vitro.The activities of γ-secretase in SKOV3 and T29 with dimethyl sulfoxide (DMSO) and DAPT were detected respectively by Gal4VP16/UAS and dual luciferase reporter assay system.Results (1) The immunohistochemical composite scores (ICS) of Notch1 in epithelial ovarian carcinoma (6.7±2.2) were not significantly different with those in benign epithelial ovarian tumor (5.4± 2.7,P=0.153),while the ICS of Jagged 1 and NICD in epithelial ovarian carcinoma (5.3± 2.4,5.3± 2.3) were higher than those in benign epithelial ovarian tumor (1.6± 1.4,3.1± 1.7; all P<0.01).The expression of Notch 1,Jagged 1 and N ICD had no correlation with patients' aged,history of carcinoma,ascites,the level of serum CA125,maximum length of ovarian tumor,Federation International of Gynecology and Obstetrics (FIGO) stage,grade and pathology subtypes (all P>0.05).The hazard ratio between the high expression of Notch1,Jagged1,or NICD and the moderate to low expression of Notch1,Jagged1,or NICD,and Jagged1 were 0.771,1.648 and 1.316,respectively (all P>0.05).The 5-year survival rate and median survival time between the high expression of Notch,Jagged 1 or NICD in subgroup and moderate to low expression in subgroup were of no difference (all P>0.05).The activity of γ-secretase in SKOV3 was significantly higher than that in T29 [(12.2± 1.4)%,P=0.019].(2)After DAPT treated,the relative activity of γ-secretase in SKOV3 (50 μmol/L) was declined from (100.0±5.3)% to (6.6±0.8)% (P=0.001).Conclusions Jagged1 and NICD in Notch1 pathway may play a key role in the occurrence of ovarian carcinoma.The activity of γ-secretase in epithelial ovarian carcinoma was higher than that in ovarian epithelial cell which suggest that DAPT,γ-secretase inhibitor,may become the target of ovarian carcinoma treatment.
6.Transfection of siRNA into rabbit cervical cells in transformation zone by adopting solid phase in vivo inhibits HPV-DNA replication in SCID mouse with cervical carcinoma
Baihua LIAO ; Yijun FENG ; Xiaomin XIAO
Chinese Journal of Pathophysiology 2010;26(4):695-699
AIM: To investigate the possibility of transfecting siRNA into rabbit cervical cells in transformation zone by the method of solid phase in vivo and to verify the effectivity of siRNA transfection by modifying the permeability of the cervical epithelium. METHODS: A sense strand small-interference RNA (siRNA) for human papillomavirus type 16 (21 bp) was designed and labeled with Cy3. siRNA-Lipo2000-carbomer gum was prepared. Twelve rabbits were included in the study and divided into experimental group and control group. In order to modify the permeability of cervical epithelium, hypertonic saline solution at concentration of 200 mmol/L was used to infuse the cervix in the experimental rabbits for 10 min, and normal saline was used for the control animals. The siRNA-Lipo2000-carbomer gum was applied to the surface of the rabbit cervix. Twenty-four hours later, the rabbits were sacrificed, and the cervix was isolated, cut into 2 parts, one part was for rapid frozen sectioning and the efficiency of transfection was observed under fluorescence microscope, another part was prepared by paraffin embedding and sectioning, and the form of cervical histiocytes was observed. Twelve SCID mice with SiHa cell cervical tumor, divided into experimental group and control group, were also used in the study. The mice in experimental group were treated with siRNA-Lipo2000-carbomer gum for 7 d. The control mice were treated with Lipo2000-carbomer gum only. Five days later, the mice were sacrificed and the tumor was collected, and the HPV16-DNA was measured by PCR. RESULTS: (1) Red fluorescence (Cy3) in cervical epithelium was observed in all rabbits. However, no different effect of siRNA transfection was found between the ways of modifying the cervical epithelium permeability. (2) No abnormal change such as flare, swelling and ulcer at all cervical tissue was observed, the cervical cell form was normal. (3) The titer of HPV16-DNA was decreased significantly after siRNA transfection (P<0.05). CONCLUSION: Transfection of siRNA into rabbit cervical epithelium in vivo is successful by using the method of solid phase and inhibits the processes of HPV-DNA, indicating that using RNAi is a practical way to treat HPV infection in human cercix and to decrease the incidence of cercical carcinoma.
7.Effect and safety of two treatment methods in patients with stable phase of chronic obstructive pulmonary disease
Weidong LIAO ; Changqing LIN ; Feng WU
Chinese Journal of Primary Medicine and Pharmacy 2010;17(6):721-722
Objective To investigate the effect and safety of Compound codeine phosphate syrup with Ambroxol treatment in the stable phase of chronic obstructive pulmonary disease. Methods 100 patients with stable COPD were divided into Compound codeine phosphate syrup with Ambroxolt treatment group (Group A) 50 cases and Compound codeine phosphate syrup treatment group( Group B) 50 cases,drug were given for 3 ~ 7d. The symptom score and efficacy of two groups before treatment and after treatment were compared. Results The symptom score of cough,sputum volume,sputum viscosity ,wheeze,sleep after treatment 8th day were improved significantly ( χ2 = 3. 891 ,χ2 =3. 992, χ2 = 4. 198, χ2 = 3.981, χ2 = 3. 879, allP < 0. 05; Total effective rate of cough, sputum volume, sputum viscosity,wheeze in group A(92. 0% ,94. 0% ,90. 0% ,90. 0% ) higher than that in group B(80.0% ,86.0% ,80. 0%,78.0% ) ( χ2 = 3.991, χ2 = 4. 012, χ2 = 3. 998, χ2 = 3.971, allP < 0. 05); The adverse reactions of A、 B group were 12.0% and 14.0%(χ2 =1.971,P>0.05). Conclusion Compound codeine phosphate syrup with Ambroxol is an effective and safe antitussive in the stable phase of chronic obstructive pulmonary disease.
8.Study on dielectric properties of human breast tissues
Qimei LIAO ; Xiuzhen DONG ; Feng FU
International Journal of Biomedical Engineering 2006;0(04):-
Breast cancer is one of the most common malignant tumours in women. It threatens the health and life of women. The imaging technology of breast electrical impedance scanning based on the dielectric properties of breast tissues develops a new aspect of early detection and auxiliary diagnosis of the breast cancer. The dielectric properties of human breast tissues reflect the pathological and physiological state of breast tissues and the measurement of these properties serves as the basis for electrical impedance scanning(EIS) technology. In this paper, the measurements and results of dielectric properties of human breast tissues are discussed, and the problems of measurement and the application perspective of the EIS are also explored.
9.Effect of LASIK on visual function for adult patients with binocular anisometropia
Tingting WANG ; Rongfeng LIAO ; Lixia FENG
Acta Universitatis Medicinalis Anhui 2014;(9):1343-1344,1345
A total of 60 myopia patients (120 eyes) who were going to undergo myopia LASIK were selected in this study. The patients were divided into two groups of anisometropia and non-anisometropia,each group had 30 patients (60 eyes). Checked vision, fusion range,near and distant stereoscopic at 10 day pre-operation and at 1,3 and 6 month in post operation. After the LASIK, all of 60 patients' anisometropia were significantly reduced, binocular stereopsis were obviously improved than pre-operation, especially the anisometropia group; the binocular fusion range also got better,but there was no significant difference between the two groups. This study clarified that the visual function of anisometropia could be improved after LASIK.
10.Effect of implantation of the bone marrow cells into infarct myocardium on the secretion of cytokines
Feng LIN ; Chongxian LIAO ; Yunbin YE
Chinese Journal of Organ Transplantation 1996;0(02):-
ObjectiveTo study the effect of implantation of the bone marrow cells into infarction myo cardium on the secretion of basic fibroblast growth factor (bFGF), insulin-like growth factor 1 (IGF-1), transforming growth factor-?1 (TGF-?1 ), interleu kin-1 (IL-1), and interleukin-8 (IL-8).MethodsBone marrow cells were implanted into the region of acute myocardial infarct via topical injection. Specimens were harvested at first, 2nd, 4th, 8th week after implantation for the expression of cytokines and vascular density examination by immunohistochemical analysis and the levels of cytokines by radioimmunoassay. ResultsAt first, 2nd, 4th, 8th week after transplantation, the vascular density in the bone marrow cell implant group was significantly higher than that in the control group (P