1.Effect of ginsenoside-Rg1 on the proliferation of paraurethral fascia fibroblasts derived from women suffering from stress urinary incontinence
Chinese Journal of Obstetrics and Gynecology 2008;43(11):835-838
Objective To investigate the effect of ginsenoside-Rgl on paraurethral fascia fibroblastsmultiplication and the expression of proliferation cell nuclear antigen (PCNA) of stress urinary incontinence(SUI) women in vitro. Methods Specimens of human paraurethral fascia were obtained from 4 SUI womenduring tension-free vaginal tape (TVT) or tension-free vaginal tape-obturator (TVT-O) procedure.Fibroblasts were isolated and cultured by outgrowth technique. After reaching confluency fibroblasts weresubcultured every 5 days and cells after passage number 3 to 5 were used for assessment. The paraurethralfascia fibroblasts were treated with ginsenoside-Rgl at different concentrations (5, 10, 20 μmol/L) andfibroblnsts without Rgl were used as controL The multiplication conditions of paraurethral fascia fibroblastswere respectively detected by methyl thiazolyl tetrazolium (MTr) assay and the expression of PCNA byhistochemistry. Results ( 1 ) Compared with the control group, the growth rate of cells treated with differentconcentrations of Rgl after 72h [ (29±5 )%, (40±5 )%, (26±4)% respectively ] was significantly higher(P<0.01). (2)Compared with the control group, the stimulatory effect of Rgl on fibroblast growth wassignificant at 24 h (P<0.01), and peaked at 72 hi (29±5)% ,(40±5)%, (26±4)% respectively, P<0.01]. (3)Compared with the control group(28.77% ), there was a significant increase of PCNA-positivecells (P<0.01) after 48 h treatment with different concentrations of Rgl (49.24%, 83.48%, 54.50%respectively). Conclusion The results indicate that, at least in vitro, fibroblasts from paraurethral fasciataken from women suffering from SUI are able to proliferate after
2.Treatment of non-small cell lung cancer comes to the age of immunotherapy
Medical Journal of Chinese People's Liberation Army 2017;42(6):483-487
Immune checkpoint inhibitors have become an important alternative for advanced non-small cell lung cancer (NSCLC) patients to surgery, chemotherapy, radiotherapy and targeted therapy. Monoclonal antibodies directed against immune checkpoint have shown better results in the application of first- or second-line treatment of NSCLC and for both squamous and non-squamous cell carcinoma patients, especially for those with positive PD-L1 tumor cells. Some comments will be made in present paper about the efficacy, biomarker, combined therapy and the resistant mechanism of immune checkpoint inhibitors.
3.MicroRNAs as a potential biomarker for central nervous system injury diagnosis
Jiaxi SONG ; Dongmei NIU ; Junjun WANG
Chinese Journal of Laboratory Medicine 2015;(3):211-214
Central nervous system ( CNS) injuries, such as cerebral ischemia, traumatic brain injury (TBI), and spinal cord injury (SCI), are often accompanied by complex pathological changes, and could lead to a variety of other neurological diseases.Neurons and glial cells are precisely regulated by many genes.MicroRNA ( miRNA ) are endogenous molecules discovered in recent years that regulate post transcriptional gene expression.They are highly expressed in the central nervous system and abnormal expressed under pathological conditions.They are involved in regulating variety of pathological processes after CNS injuries, and are CNS disease potential biomarkers.
4.Clinical study on Yinzhi-huang combined with probiotics in the treatment of neonatal hyperbilirubinemia
Yanshun MU ; Huaaling LIU ; Dongmei SONG ; Dongjie ZHANG
International Journal of Traditional Chinese Medicine 2013;35(12):1068-1070
Objective To investigate the therapeutic efficacy of Yinzhi-huang combined with probiotics in the treatment of neonatal hyperbilirubinemia.Methods 80 neonates of hyperbilirubinemia were recruited into a treatment group (40 cases) and a control group (40 cases).The control group was treated with the gap blue light irradiation,besides,patients with rapid increase or high level of bilirubin were additionally treated with acid-correcting agents,Liver enzyme inducer,and albumin infusion; while the treatment group was additionally treated with Yinzhi-huang and probiotics on the basis of the control group.The values of serum total bilirubin before the treatment Was determined in both groups.During treatment,the changes of daily bilirubin,were monitored with percutaneous bilirubin monitor,and the time for serum bilirubin values decreased to normal level was studied in both groups.Results The two groups showed no significant difference in examination of the serum bilirubin values before treatment(P>0.05).The daily bilirubin decreased value of treatment group(53.07± 17.80) μmol/L showed statistically significant compared with the control group(30.56± 13.43)μmol/L(P<0.05); the time for serum bilirubin values decreased to normal level in the treatment group (4.87± 2.06) d was significantly different compared with the control group (7.12± 2.33) d,(P< 0.05).The apparent effective rate in the treatment group 75% (30/40) was higher than that in the control group 35%(14/40)with statistical significance(x2=5.89,P<0.05).The total effective rate in the treatment group 92.5% (37/40)was higher than the control group 75% (30/40)with statistical significance (x2=4.50,P<0.05).Conclusion Yinzhi-huang combined with probiotics has better effects than conventional treatment in decreasing the daily bilirubin values,restoring normal serum bilirubin time of neonatal hyperbilirubinemia and it is worthy of clinical application.
5.Effect on angiogenesis induced by ovarian cancer OVCAR-3 cells in vitro when RNA interference on expression of matrix metalloproteinase-2 gene
Qingyuan SONG ; Xiujie SHENG ; Dongmei ZHOU ; Yingqun ZHOU
Cancer Research and Clinic 2012;(12):793-796
Objective To investigate expression of VEGF and the in vitro angiogenesis ability induced by ovarian cancer cells after RNA interference on expression of matrix metalloproteinase-2 (MMP-2)gene.Methods One specific target sequence of MMP-2 and one non-specific sequence (NC group) were chosen,the DMEM as blank group.After transfection of ovarian cancer OVCAR-3 cells,mRNA and protein expression of MMP-2 and VEGF genes were examined by RT-PCR and Western blot analysis,and the angiogenesis ability was detected by in vitro angiogenic assay.Results When compared with the NC group,the mRNA expression of MMP-2 and VEGF were decreased by 78.8 % and 75.5 % (P < 0.05) in 48 h after transfected,respectively,and protein expression was decreased by 81.2 % and 78.3 % (P < 0.05) at the same time point.In vitro angiogenic assay suggested that the ability of angiogenesis was inhibited when down-regulated of MMP-2 gene (P < 0.05).Conclusion Down-regulation of MMP-2 gene in ovarian cancer cells by RNA interference could inhibit its VEGF expression and in vitro angiogenesis induced by ovarian cancer cells,which suggestes that the inhibition of MMP-2 gene has an anti-angiogenesis effect,and MMP-2 gene could be a potential target for ovarian cancer gene-therapy.
6.Rat bone marrow mesenchymal stem cells differentiation into neuron-like cells in vitro
Tao KUANG ; Lei WANG ; Wen SONG ; Dongmei MENG
Chinese Journal of Tissue Engineering Research 2012;16(19):3507-3510
BACKGROUND: Bone marrow mesenchymal stem cells (BMSCs) can be induced to differentiate into neuron-like cells in new environment after transplantation, and then to replace damaged cells for reconstructing neural circuit. OBJECTIVE: To establish the co-culture system between rat BMSCs and neural cells in vitro, and to study the influence of neural cells on the differentiation of BMSCs into neuron-like cells in the co-culture system. METHODS: The neural cells obtained from Wistar rat fetal brain tissue and BMSCs gained from rat thighbone were co-cultured in Transwell culture plate. The morphological changes of BMSCs were observed and the special markers of neural cells in BMSCs were examined by immunofluorescence on the fifth day of the co-culture. The results were compared with control group which where BMSCs were alone cultured. RESULTS AND CONCLUSION: BMSCs in the neural cells co-culture system extended, were radial, connected each other. Neuron specific enolase immunoreactions showed positive results, showing neuron-like cells. The positive ratio of neuron specific enolase-positive cells was (33.0±10.5)%. However, BMSCs in the control group did not express neuron morphological character. Immunofluorescence exhibited that cells were negative for neuron specific enolase. These indicate that microenvironment provided by neurons improves the differentiation of BMSCs into neuron-like cells.
7.Clinical characteristics and therapy of 10 Nocardia infection cases
Yuchao XIA ; Xuan YANG ; Lifang BAN ; Liucun SONG ; Dongmei RAN
Chinese Journal of Infection Control 2017;16(5):453-457
Objective To analyze the clinical characteristics and therapy of Nocardia infection, and provide reference for clinical practice.Methods Patients with positive specimen culture of Nocardia from May 2014 to June 2016 were surveyed retrospectively, the body status, clinical features, therapeutic regimen, and prognosis were analyzed.Results A total of 10 cases of Nocardia infection were surveyed, there were 7 males and 3 females;average age was (49.90+13.75) years old.Nocardia infection occurred mostly in population with impaired immune status or underlying diseases, the main infection site was lung, compound sulfamethoxazole was the first choice drug for treatment of infection, amikacin, imipenem/cilastatin and so on were alternative choice according to disease condition, 8 patients all improved after therapy.Conclusion The diagnosis made on the basis of microbiological examination, imaging, and pathological examination, combined with comprehensive judgment according to risk factors of Nocardia infection, patient can be treated timely and rationally, and the prognosis is better.
8.Research on Objective Method of Traditional Chinese Medicine Color Inspection
Dongmei ZHENG ; Wenai SONG ; Zhendong DAI ; Hongmo WANG
World Science and Technology-Modernization of Traditional Chinese Medicine 2014;(12):2616-2621
This study was aimed to objectify Color Inspection in Traditional Chinese Medicine (CITCM). A quantita-tive system for CITCM was designed and developed. The entire system included two parts, which were the hardware and the software. The hardware was an image acquisition device in a standard lighting condition. The software was used for digital image processing. The chromaticity of facial special region (SR) corresponding to five internal organs were calculated. The system was carried out by taking 100 samples of people. It was concluded that the experiment verified the effectiveness of the system in objective study of CITCM. It can be used as basis for the further study on CITCM.
9.The 1 H-Magnetic Resonance Spectroscopy Study of Auditory Cortex Metabol ism in Patients with Metabol ic Syndrome
Xinxia JIANG ; Yingxia XU ; Tao LIU ; Baoshan WANG ; Dongmei SONG
Journal of Audiology and Speech Pathology 2017;25(1):32-35,36
Objective To investigate the characteristic changes of the metabolism products in the auditory cortex (transverse temporal gyrus)in patients with metabolic syndrome combined with sensorineural deafness using 1 H magnetic resonance spectroscopy (1 H-MRS),and to find out the early warning indicators of sensorineural deafness in patients with metabolic syndrome.Methods The pure tone audiometry (PTA)was performed in 142 pa-tients with metabolic syndrome (diagnosed by endocrinology department),and 15 healthy subjects as the control group.The patients were divided into four groups:the metabolic syndrome group;the metabolic syndrome group with unilateral,the bilateral deafness group,and the control group.Cerebral metabolism was studied by assessing the ratios of nitro-acetyl aspartate contrast to choline (NAA/Cho)as well as to creatine (NAA/Cr),myo-inosi-tol to creatine (mI/Cr)and choline to creatine (Cho/Cr)ratios in the auditory cortical separately in these groups. ROC curves were made for those metabolism markers to find the best diagnostic threshold.Results Significantly lower values of NAA/Cho ratio and higher values of Cho/Cr were observed in metabolic syndrome in the control group (P<0.05),Cho/Cr higher than those (P<0.05).NAA/Cho ratios in the injured and uninjured auditory cortex of MS with unilateral deafness were significantly lower than those in the control group (P<0.05).A self-comparison was made between the inj ured and uninj ured auditory cortex,the result showed that NAA/Cho ratio had significant differences.All of the metabolisms were tested by the curve of ROC.The area of NAA/Cho under the ROC curve was 81%,which had a higher accuracy.NAA/Cho equating to 1 .82 could be used as the boundary indi-cators between metabolic syndrome without deafness and with deafness groups.The areas of the other indicators un-der the ROC curve were <50%.Conclusion NAA/Cho may be the early warning marker of sensorineural deafness in patients with metabolic syndrome.
10.Ulinastatin induces Nrf2/HO-1 axis and protects against oxidative stress in ovalbumin-induced murine asthma model
Dongmei SONG ; Yinghao NIU ; Lei YU ; Baoshan WANG
Chinese Pharmacological Bulletin 2014;(12):1713-1720
Aim To explore the potential mechanism of ulinastatin’s antioxidant effect by examining the Nrf2 /HO-1 pathway.Methods OVA-induced asthma of mice was cured by intraperitoneal injection of ulinas-tatin (1 00 kU·kg -1 ·d -1 ).Control mice were given the same volume of PBS (pH 7.4).To investigate the effect of ulinastatin on airway hyperresponsiveness, levels of interleukin IL-4,IFN-γand OVA specific IgE in bronchoalveolar lavage fluid (BALF)were measured using enzyme-linked immunosorbent assays (ELISAs). The content of ROS from BALF of mice was tested in double hydrogen rhodamine (DHR)-1 23 method.The level of protein carbonyl and MDA from lung tissue of mice was detected with Protein carbonyl content assay kit and MDA kit.And antioxidative enzyme in mice BALF was tested by antioxidant enzyme kit.The levels of HO-1 in lung tissue from mice were detected by Western blot and Real-time PCR.Nuclear transfer and binding activity of Nrf2 were tested respectively by Western blot,IF and EMSA.Results Ulinastatin could alleviate the airway hyperresponsiveness,dis-tinctly reduce the content of IL-4,OVA specific IgE, ROS,protein carbonyl and MDA,but upraise the ex-pression of IFN-γand antioxidative enzyme such as SOD,GSH and TAOC. Moreover, the antioxidant effect of ulinastatin could be reversed by Znpp,which was the inhibitor of HO-1 .Ulinastatin could obviously induce the expression of HO-1 in protein level in a dose-and time-dependent manner.Ulinastatin could also induce the nuclear transfer of Nrf2 and increase the binding activity of Nrf2 as well as the expression of HO-1 in gene level;Conclusion Ulinastatin could induce the activation of Nrf2 /HO-1 pathway,which may contribute to the protective effects of ulinastatin a-gainst OVA-induced oxidative stress.