1.Expression of matrix metalloproteinases-11 and tissue inhibitor of matrix metalloproteinases-1 in endometrium of hypomenorrhea
Journal of Chongqing Medical University 2007;0(08):-
0.05).Conclusions:MMP-11 might participate in the re-establishment and generation of endometrium.There are multiple factors in regulatoring the expression of MMP-11.TIMP-1 is just one of the factors.
2.Monocyte chemotactic protein 1-induced protein and cerebral ischemia
Shaofei HUANG ; Xiaoxi LIU ; Liang ZHOU
International Journal of Cerebrovascular Diseases 2015;(3):229-233
Cerebral ischemia-induced inflammatory cascade reaction may aggravate nerve tissue damage and destroy blood-braln barrier, and angiogenesis after ischemia can improve nerve function. Inhibiting inflammatory response after stroke, promoting angiogenesis and protecting blood-braln may reduce nerve tissue damage and promote recovery of neurological function. Monocyte chemotactic protein 1-induced protein inhibits inflammatory signaling pathways through degradating proinflammatory cytokine mRNA. Its unique biological characteristics also suggest that it has the potential protective effect in cerebral ischemia. This article focuses on the roles of monocyte chemotactic protein 1-induced protein in cerebral ischemia.
3.Study on the Determination of Aristolochic Acid by RP-HPLC
Xiaoxi DU ; Yuehua ZHOU ; Jincai LU
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(07):-
Objective To optimize the RP-HPLC procedure for the determination of aristolochic acid. Method Different extraction solvents and methods have been screened to get the most efficient way for sample preparation. The influence of different mobile systems on quantitation were compared to choose an approprate mobile system for determination. Besides,the minimum limits of different detecting waves were measured to give the method to detect trace amount of aristolochic acid. Result Refluxing with 70% methanol was better than other ways in sample preparation. Both methanol-1% acetic acid (70∶30) solution and 0.3% ammonium carbonate solution (pH=7.5)-acetonitrile (75∶25) with wavelength of 250 nm and 319 nm can be used for quantitation while 0.3% ammonium carbonate solution (pH=7.5)-acetonitrile (75∶25) with wavelength of 224 nm for trace detection. The minimum detectable amount was 0.02 ng. Conclusion The method established can be applied to determinate aristolochic acid and detect trace amout exactly.
4.Effects of complete Freund's adjuvant-induced thymocyte apoptosis on NOD mice with type 1 diabetes
Xiaohong NIU ; Xiaoxi WANG ; Tiejian JIANG ; Zhiguang ZHOU
Medical Journal of Chinese People's Liberation Army 2001;0(08):-
Objective To investigate the preventive effect of complete Freund's adjuvant induced thymocyte apoptosis on NOD mice with type 1 diabetes.Methods Forty-two female NOD mice of 3 weeks old were randomly divided into complete Freund's adjuvant group(CFA)and phosphate buffer saline group(PBS)(21 each).Animals of CFA group received injection of 50?l CFA at hind foot-pad,and those in PBS group received 50?l PBS at the same location.Five mice of each group were sacrificed at the 6th and 12th week,respectively,and the remainders of each group were sacrificed at the 30th week for the examination of insular ? cell apoptosis,thymocytes apoptosis,insulitis severity and diabetes incidence.Results Both the insulitis severity score and the ? cell apoptosis declined(P
5.Discovery of chrysoeriol, a PI3K-AKT-mTOR pathway inhibitor with potent antitumor activity against human multiple myeloma cells in vitro.
Yang, YANG ; Xiaoxi, ZHOU ; Min, XIAO ; Zhenya, HONG ; Quan, GONG ; Lijun, JIANG ; Jianfeng, ZHOU
Journal of Huazhong University of Science and Technology (Medical Sciences) 2010;30(6):734-40
This study was designed to determine the impact of chrysoeriol on proliferation and cell cycle progression in the human multiple myeloma cell lines RPMI 8226 and KM3, and its related molecular mechanisms. Chryseoriol was identified by using the phosphorylated AKT-specific cytoblot high throughput assay. CCK-8 assay was employed to examine the growth inhibition rate and IC(50) (48 h) in peripheral blood mononuclear cells (PBMNCs), RPMI 8226 and KM3 cells treated with chrysoeriol at various concentrations. Cells were labeled with 5-6-carboxyfluorescein diacetate succinimidyl ester (CFSE), and the proliferation dynamics was detected by flow cytometry and analyzed with ModFit software. The cell cycles of RPMI 8226 and KM3 cells were measured by flow cytometry when the IC(50) concentration of chrysoeriol was adopted. The alterations in cell-cycle related proteins (Cyclin B1, Cyclin D1, p21) and proteins in PI3K-AKT-mTOR pathway were determined by Western blot analysis. The results showed the proliferation of multiple myeloma cells was significantly inhibited by chrysoeriol, resulting in cell cycle arrest in G(2)/M phase. Chrysoeriol could significantly reduce the expression of p-AKT (s473) and p-4eBP1 (t37/46) protein, meanwhile enhanced Cyclin B1 and p21 protein expression. Similar effects were not observed in PBMNCs from normal donors. It was concluded that chrysoeriol was a selective PI3K-AKT-mTOR pathway inhibitor. It restrained the proliferation of human multiple myeloma cells, but didn't affect proliferation of PBMNCs from normal donors. It might exhibit the cell cycle regulatory effect via the inhibition of PI3K-AKT-mTOR signal pathway.
6.A single fusion signal for t(14;18)(q32;q21) translocation is present in both the follicular lymphoma and local endothelial cells.
Xiaoxi, ZHOU ; Qinlu, LI ; Ying, WANG ; Shan, HUANG ; Lijun, JIANG ; Jianfeng, ZHOU ; Yang, CAO
Journal of Huazhong University of Science and Technology (Medical Sciences) 2012;32(3):324-7
Herein we reported a case of follicular lymphoma with 50.26% clonal malignant lymphocytes and 50% tumor cells positive for the immunoglobulin heavy chain gene and B-cell lymphoma 2 gene (IGH-BCL2). To determine whether endothelial cells (ECs) within the tumor share the feature of advanced malignancy, we isolated and purified the ECs from the tumor by using the immunomagnetic beads conjugated with a monoclonal antibody against CD34, a surface marker of ECs. Thereafter, we identified ECs according to their morphology and found that ECs presented consistently flat and elongated appearance with a lot of Weibel-Palade bodies in the cytoplasm. Results of flow cytometry confirmed that ECs isolated from the follicular lymphoma expressed high level of both vWF and CD34 and the purity of the ECs fraction was more than 90%. Additionally, we used FISH to check chromosomal aberration in the purified ECs and found that some of the ECs had only one fusion signal for the green IGH probe and the red BCL2 probe in contrast to typical t(14;18)(q32;q21) translocation with two fusion signals. This phenomenon was also observed in the tumor cells. It might be a different breakpoint of IGH in this case, which induced the loss of the fusion signal, indicating t(14;18)(q32;q21) translocation. The positive cells accounted for 18% of the isolated ECs from the tumor, indicating that a proportion of ECs from follicular lymphoma had the same chromosome aberration as the neoplastic cells.
7.Immune safety of a novel oncolytic mutant M1 after administration In Vivo.
Lijun, JIANG ; Xiaoxi, ZHOU ; Qinlu, LI ; Fei, YU ; Liang, HUANG ; Quanfu, MA ; Jianfeng, ZHOU ; Yang, CAO
Journal of Huazhong University of Science and Technology (Medical Sciences) 2012;32(4):517-23
The aim of this study was to evaluate the safety and efficiency of a novel, oncolytic adenovirus mutant M1 administered in conjunction with immunosuppressive agents. Animal models were established by administering purified M1 either intravenously or retroperitoneally. At different time points, blood samples were taken from the mice for testing of liver and renal function. Microscopic examination of the liver was performed to observe pathological changes. Immunohistochemical analyses were used to evaluate the expression of the adenovirus in the liver. Lymphocyte recruitment to the liver and the activation of adenovirus specific T cells were also analyzed. No signs of general toxicity were observed, but transient increases in ALT and Scr were observed following the administration of M1. Microscopic examination revealed a mild inflammatory response in the liver. Compared to intravenous injection, higher expression levels of adenoviral proteins were observed after retroperitoneal injection. Combined treatment with cyclosporine A resolved the liver and kidney dysfunction and increased the concentration of the adenovirus in the liver. The use of the novel oncolytic adenovirus mutant M1 in vivo is safe, and the combined administration of M1 with immunosuppressive agents was able to enhance the effectiveness and safety profile of M1.
8.Identification of Eupatorii Herba and Its Adulterants by ITS2 Sequence
Lan WU ; Keli CHEN ; Wei SUN ; Zhigang HU ; Yuan TU ; Xiaoxi MA ; Yunhan LIN ; Hong ZHOU
World Science and Technology-Modernization of Traditional Chinese Medicine 2013;(3):410-414
Objective: This study aimed to discriminate between Eupatorii Herba and its adulterants in order to guarantee the quality and clinical curative effect of this medicinal material. Methods: Genomic DNA extracted from Eupatorii Herba was used as templates. The internal transcribed spacer 2 (ITS2) of nuclear ribosomal DNA was amplified. Sequence assembly and consensus sequence generation were performed by CodonCode Aligner. The intraspecific and interspecific genetic distances of Eupatorii Herba and its adulterants were computed by MEGA5 and the phylogenetic tree was constructed using the neighbor-joining (NJ) method. Results: The length of ITS2 sequence of Eupatorii Herba was 218 bp. The maximum intraspecific genetic distance (K2P distance) of Eupatorii Herba was 0.0092. The minimum interspecific genetic distance of Eupatorii Herba and its adulterants was 0.024. The NJ trees showed that the ITS2 sequence would be used to identify Eupatorii Herba and its adulterants. Con-clusion: ITS2 sequence was able to identify Eupatorii Herba and its adulterants correctly and it provided a new technique to ensure clinical safety in utilization of traditional Chinese medicines.
9.Application of fast-track surgery in perioperative period of colon cancer: a randomized controlled clinical trial
Dan ZHOU ; Tingyong TANG ; Xiaoxi FAN ; Shufeng JI ; Mengchuan WANG ; Aiguo WU
International Journal of Surgery 2013;40(11):751-754
Objective This study was designed to compare the safety and efficacy of fast track surgery (FTS) with conventional perioperative management in colonl cancer patients undergoing radical resection.Methods From May 2011 to May 2013,66 patients with colorectal cancer were randomly assigned to FTS group and control group.Outcomes were assessed by length of postoperative hospital stay,medical cost,nutritional status,gut function,and postoperative complication.Results FTS group was associated with a significantly shorter postoperative hospital stay,lessmedical cost,earlier first passage of flatus,less loss of body weight in the postoperative period compared with control group,and there were no differences in morbidity or mortality between two groups.Conclusion The radical resection under the guidence of fast track rehabilitation is safe and effective method.Significantly reduce patients' perioparative stess response and accelerate the recovery.
10.SPECT and CT in Evaluating Preoperative Renal Function of Patients with Unilateral Hydronephrosis
Xiaoxi PANG ; Hao ZHONG ; Xuehong CHEN ; Zhengjiang WANG ; Jiangyan LIU ; Junlin ZHOU
Chinese Journal of Medical Imaging 2015;(2):120-124
Purpose To analyze the relationships between glomerular filtration rate (GFR) measured by SPECT and renal parenchyma thickness and enhanced CT value measured by CT, and to explore predictive significance of CT in evaluating renal function of patients with hydronephrosis.Materials and Methods One hundred and fifteen patients diagnosed with unilateral hydronephrosis by ultrasound were retrospectively analyzed. GFR% (GFR percentage of affected kidney to the both kidneys) was measured by SPECT. CT% (percentage of affected renal parenchyma thickness to the both kidneys) and enhanced CT% (percentage of enhanced CT value of affected kidney to the both kidneys) were measured by pre- and post-contrast CT scan. According to GFR, the renal function was divided into mild-to-moderate impairment, severely impairment and non-function. Twenty-five volunteers were recruited as control group. CT%, enhanced CT% and GFR%among the four groups were compared, and the correlation of CT% and enhanced CT%with GFR% was analyzed to evaluated CT in predicting renal function.Results CT%, enhanced CT% and GFR% in mild-to-moderate impairment group was significantly greater than those in severely impairment group and non function group (F=20.24, 7.78 and 329.21,P<0.05). GFR% was positive correlated with CT% (r=0.58,P<0.05) and enhanced CT% (r=0.61,P<0.05). Area under curve (AUC) of CT% were 0.54, 0.79 and 0.83 for mild-to-moderate impairment, severely impairment and non-function, with sensitivity of 92.91%, 93.47%, 65.72%, and specificity of 35.33%, 59.47%, and 88.62%, respectively. AUC of enhanced CT% were 0.79, 0.89 and 0.96 for the three groups, with sensitivity of 97.51%, 80.02%, 97.66%, and specificity of 58.14%, 89.82% and 94.27%, respectively.Conclusion There was high correlation between renal function imaging by SPECT and CT in evaluating renal function of hydroneohrosis patients. Pre- and post-contrast CT scan can be used as complements in predicting renal function, and post-contrast CT with high accuracy.