1.Impacts of tissue fixation and processing in immunohistochemistry and its standardization.
Ying YANG ; Bing WEI ; Hong BU
Chinese Journal of Pathology 2009;38(12):852-855
Ethanol
;
Fixatives
;
Formaldehyde
;
Humans
;
Immunohistochemistry
;
methods
;
Time Factors
;
Tissue Fixation
;
methods
;
standards
2.The effects of rosiglitazone on neointima and inflammatory factors after carotid artery balloon injury of rats
Lun BU ; Guoliang JIA ; Wei ZHANG
Chinese Journal of Interventional Cardiology 1993;0(02):-
Objective To investigate the effect of rosiglitazone on neointima and inflammatory factor after carotid artery injury of rats. Methods A total of 60 SD rats were divided randomly into 3 groups: the control group, the surgery group and the resiglitazone therapeutic group. The left common carotid arteries were injured by balloon in the surgery group and the therapeutic group. Rosiglitazone was administrated intragastricly to therapeutic group. The plasma tumor necrosis factor-? (TNF-?) and interleukin-6 (IL-6) levels were detected with radioimmunoassay at 4h, 1 and 7d after the operation. After 2 weeks, the injured vessels were stained by HE and immunity histochemistry method,then observed with microscope. Neointimal area (NIA), internal elastic lamina area (IELA), stenosis index (SI) and optical density value of protein expression of NF-?B were calculated. Results Rosiglitazone inhibited the neointima of injured vessels, decreased the protein expression of NF-?B and reduced plasma TNF-? and IL-6 levels. Conclusion Rosiglitazone can inhibit the inflammatory reaction of injured vessels and lighten the restenosis of injured vessels.
3.CLINICAL APPLICATION OF THREE DIMENSIONAL QUANTITATIVE MEASUREMENT ON THE SURGERY OF THE BASE OF THE MIDDLE CRANIAL FOSSA
Kaiqun SUN ; Rongfa BU ; Wei GUI
Medical Journal of Chinese People's Liberation Army 1983;0(05):-
0.05). It suggested that the 3 D quantitative measurement is a useful technique for the diagnosis of diseases in the base of the middle cranial fossa region,so that it is useful for surgical planning.
5.Activation of PPAR-γ inhibits differentiation of rat osteoblasts by reducing expression of connective tissue growth factor.
Wei-Wei, YU ; Qin, XIA ; Yan, WU ; Qiao-Yun, BU
Journal of Huazhong University of Science and Technology (Medical Sciences) 2014;34(5):652-6
Long-term treatment with an agonist of peroxisome proliferator-activated receptor (PPAR)-γ is associated with bone fractures in the clinical practice. However, the mechanisms underlying the fractures are not fully understood. This study was aimed to examine the effect of rosiglitazone (an agonist of PPAR-γ) of different doses on the proliferation, differentiation, and transforming growth factor beta 1 (TGF-β1)-induced expression of connective tissue growth factor (CTGF) in primary rat osteoblasts in vitro. Osteoblasts were isolated from newly born SD rats and treated with different doses of rosiglitazone (0-20 μmol/L). The proliferation and differentiation of osteoblasts were measured by MTT assay and NPP assay, respectively. The expression of CTGF was determined by RT-PCR and Western blotting. The results showed that most isolated osteoblasts displayed strong alkaline phosphatase (ALP) activity and treatment with different doses of rosiglitazone did not affect their proliferation, but significantly inhibited the differentiation of osteoblasts in a dose-dependent manner. Moreover, treatment with different doses of rosiglitazone significantly reduced the TGF-β1-induced CTGF mRNA transcription and protein expression in a dose-dependent manner in rat osteoblasts. It was concluded that the activation of PPAR-γ may inhibit the differentiation of osteoblasts by reducing the TGF-β1-induced CTGF expression in vitro.
6.Advance in studies on antitumor and immunomodulatory effects of wogonin.
Wei-Ming XIAO ; Ping BU ; Wei-Juan GONG
China Journal of Chinese Materia Medica 2014;39(16):3004-3009
Wogonin is a kind of natural flavonoid compound. According to findings in the latest studies, wogonin shows a wide range of antitumor effects, with the characteristics of multi-pathway, multi-link and multi-target, such as promoting tumor cell apoptosis through ROS or Ca(2+)-mediated signal paths, enhancing tumor cytotoxicity by TNF-α and TRAIL, blocking tumor cell cycle, inhibiting tumor angiogenesis and resisting cancer synergistically with chemotherapeutic drugs. Moreover, Wogonin could enhance body immune function by enhancing immune cell infiltration, regulating the immune cell phenotype and promoting relevant cytokine secretion. In this paper, the authors summarized the advance in studies on wogonin's antitumor and immunomodulatory effects.
Animals
;
Antineoplastic Agents
;
therapeutic use
;
Apoptosis
;
drug effects
;
Drugs, Chinese Herbal
;
therapeutic use
;
Flavanones
;
therapeutic use
;
Humans
;
Immunologic Factors
;
therapeutic use
;
Neoplasms
;
drug therapy
;
immunology
;
physiopathology
;
Tumor Necrosis Factor-alpha
;
genetics
;
immunology
8.Microbial transformation of buflomedil by Cunninghamella blakesleana AS 3.153.
Wei WANG ; Yanan YANG ; Xiaomin MA ; Ping BU ; Lu SUN
Acta Pharmaceutica Sinica 2012;47(7):934-40
The microbial transformation of buflomedil by Cunninghamella blakesleana AS 3.153 was studied, as well as a microbial model which can be used to mimic metabolism of buflomedil in mammal was established. Experiments were conducted to screen the capabilities of four strains of Cunninghamella species to transform buflomedil, in which C. blakesleana AS 3.153 was selected for a preparative biotransformation. Furthermore, the microbial model was established based on the transformation condition optimization. The parent drug and its metabolites produced by C. blakesleana AS 3.153 were detected by liquid chromatography-mass spectrometry method and three metabolites were identified while two of them were new found metabolites. Two major metabolites, para-O-desmethyl buflomedil and 12-C-oxidated buflomedil, were isolated by semi-preparative HPLC. Based on the comparison between different species, the microbial transformation of buflomedil by C. blakesleana AS 3.153 is more similar to the metabolism of buflomedil in human and Beagle dog than that in rat.
9.Expression of human papillomavirus L1 protein in lesions of condyloma acuminatum
Zhangyu BU ; Wei ZHENG ; Liming WU ; Hong ZHOU ; Xiaohong YU
Chinese Journal of Dermatology 2013;(2):130-132
Objective To investigate the expression of human papillomavirus (HPV) L1 protein in lesional tissue of condyloma acuminatum and its clinical significance.Methods Forty-three patients with condyloma acuminatum were included in this study,and received CO2 laser therapy.Tissue samples were resected from the lesions of these patients at their first visit before treatment.Immunohistochemistry was used to determine the expression of HPV L1 protein in these samples.Follow up was carried out once every 2 weeks for 3 months to assess the recurrence rate and frequency in these patients after treatment.Results HPV L1 protein was detected in 83.72% (36/43) of these tissue samples.The expression rate of HPV L1 protein decreased sequentially from patients infected with HPV 6/11,patients with both HPV 6/11 and 16/18,to those with HPV16/18 (x2 =17.90,P < 0.01).During the 12 weeks of follow up,the recurrence rate was 69.77% (30/43) with the average number of recurrence of 2.16.There was a sequential reduction in the recurrence rate and number from patients with strong expression of HPV L1 protein,to those with moderate expression,slight expression and negative expression (x2 =8.02,46.92,P < 0.05 and 0.01,respectively).The expression intensity of HPV L1 protein was negatively correlated with the recurrence rate and frequency (rs =-0.429,-0.696,respectively,both P < 0.01).Conclusion HPV L1 protein may serve as a helpful molecular biomarker for the prediction of prognosis and recurrence of condyloma acuminatum.
10.Application of the improved abdominal rotation card method in insulin injection
Wei YIN ; Shan FAN ; Zhijuan LI ; Hongmei GUO ; Hongbing BU
Chinese Journal of Practical Nursing 2016;32(22):1706-1709
Objective To explore the effect of the improved abdominal rotation card method in insulin injection. Methods A total of 100 hospitalized diabetes patients were randomly divided into control group (n=50) and observational group (n=50) according to the random number method. In the control group, insulin was injected to the subcutaneous tissue of abdomen with traditional method annular rotating method. Insulin was injected using improved abdominal rotation card method in the observational group. Compare accuracy and mastery rate of injection site rotation between the two groups. Compare fasting blood glucose (FBG), postprandial 2H blood glucose (PBG), HbA1c, the incidence of hypoglycemia and endermic induration between the two groups after three months. Results The nurses in the observation group had higher accuracy rate of the injection site rotation compared to the control group [98.6%(690/700) vs. 38.6%(270/700),χ2=584.66, P<0.01]. Mastery rate of the injection site rotation for the patients in the observation group were significantly higher than the control group [70.0% (35/50) vs. 20.0% (10/50), χ2=25.74, P < 0.01]. The incidence of endermic induration were significantly lower in observation group compared to the control group [2.0% (1/50) vs.16.0% (8/50), χ2=5.98, P < 0.01]. The incidence of hypoglycemia were significantly lower in observation group compared to the control group [4.0%(2/50) vs. 16.0%(8/50),χ2=4.00, P<0.01]. Conclusions The new abdominal rotation method in insulin injection can be a safe and effective therapy in patients with type 2 diabetes.