1.Effects of high glucose and insulin on the mRNA expressions of TGF-β1 , and TIMP-1 of hepatic stellate cells in rat
Journal of Chinese Physician 2016;18(8):1194-1197
Objective To explore the mechanism of diabetic hepatic fibrosis by observing effects of high glucose and insulin on expressions of transforming growth factor beta 1 (TGF-β1) and tissue inhibitor of metalloproteinase (TIMP-1) mRNAs of hepatic stellate cell (HSC) in rat.Methods Hepatic stellate cell lines in vitro were administrated by different dose of glucose without insulin and glucose with insulin for 72 h,and mannitol was chosen as hyperosmosis control group.Real time fluorescent quantitation polymerase chain reaction (RT-FQ-PCR) was used to determine expressions of TGF-β1 and TIMP-1 mRNAs of HSC in each group.Results Expressions of TGF-β1 and TIMP-1 mRNAs of HSC in each group could be detected and showed no significant difference among groups (P > 0.05).However,in general,expression of TGF-β1 mRNA in glucose with insulin group decreased and TIMP-1 mRNA increased.Conclusions The mRNA expressions of TGF-β1 and TIMP-1 in HSC could not be induced by high glucose alone,high dose of insulin may increase expressions of HSC TIMP-1 and reduce TGF-β1 expression.The main mechanisms of diabetic hepatic fibrosis may not be TGF-β1 pathway but be closely related to TIMP-1 pathway.
2.Mechanism of Primary Hepatic Carcinoma
Journal of Environment and Health 2007;0(11):-
Primary hepatic carcinoma is one of the high incidence malignant tumors and the mortality ranked the second in the death caused by malignant tumors in China. The research progress on the epidemiology of primary hepatic carcinoma, the related environmental factors(virus, parasite, bacterium infected, aflatoxin ingested, drinking water pollution, smoking and drinking alcoholic beverages) and genes were reviewed and the mechanism of primary hepatic carcinoma was discussed in the present paper.
3.A Comparison of Therapeutic Effect and Safety of Bisoprolol and Carvedilol in Treatment of Chronic Congestive Heart Failure
Guolan DENG ; Jing FENG ; Jian QIN
China Pharmacy 2001;0(11):-
OBJECTIVE:To compare the therapeutic effect and safety of Bisoprolol and Carvedilol in the treatment of chronic congestive heart failure(CHF).METHODS:40 patients with CHF,who had received conventional anti-HF therapy UCG determination of left ventricular ejection fraction(LVEF)
4.Coaprovel vs.Hyzaar for 24 h Ambulatory Blood Pressure in Patients with Essential Hypertension
Guolan DENG ; Rui XIANG ; Jian QIN
China Pharmacy 2007;0(35):-
0.05).CONCLUSION:Both group showed approved antihypertensive efficacy,with Coaprovel group showing higher efficacy than in Hyzaar group;and both group showed improvement in allorhythmia.Both group showed low incidences of adverse effect but good tolerance.
6.Effect of hyperthermia in combination with progresterone on a human tongue cancer drug-resistance cell line Tca8113/BLM
Chunmei HE ; Dilan QIN ; Ke DENG
Journal of Practical Stomatology 2009;25(6):862-864
Objective; To explore the possible effect of hyperthermia combined with Prog on a human tongue cancer cell line Tca8113 and drug-resistance cell line Tca8113/BLM in vitro. Methods;The effect of hyperthermia combined with Prog on Tca8113 and Tca8113/ BLM cells were determined by MTT. The concentration of ADM, the expression of P-gp and MRP were detected by flow cytometry (FCM). Results;Compared with Prog or hyperthermia, the hyperthermia at 41 X. for 1 h combined with Prog showed obvious inhibitory effect in Tca8113 and Tca8113/BLM cells(P<0.01). The concentration of ADM in Tca8113 and Tca8113/BLM cells increased obvi-ously(P<0.01). Expression levels of P-gp and MRP in Tca8113 and Tca8113/BLM cells decreased significantly. Conclusion:The hyperthermia combined with Prog can increase the intracellular concentration of ADM in Tca8113 and Tca8113 /BLM cells, which reverse the drug-resistance of Tca8113/BLM cells to BLM and down-regulate expressions of P-gp and MRP.
7.Study on the mechanism of interleukin-6 in the colonic motility changes of depression rat model
Li ZHANG ; Mingkai CHEN ; Qin DENG
Chinese Journal of Digestion 2012;32(1):33-36
Objective To study the changes of colonic motility in chronic stress-induced depression rat model,the association between interleukin 6 (IL-6) and depression and its effects on contraction of colonic smooth muscle in vitro.MethodsThere were 30 healthy adult Wistar rats,of which chronic stress-induced depression model was created in 15 rats and the other 15 rats were in control group.The ratio of sugar consumption to body weight and the percentage of sugar preference were tested in these two rats groups through sugar preference experiments.The behavioral changes of two rats groups were detected by open field test.Colonic motility was evaluated with simulated fecal discharge experiment,and the serum IL-6 level was measured with enzyme linked immunosorbent assay (ELISA).IL-6 in colon tissue at mRNA level was determined by RT-PCR.The contraction ability of rat colonic smooth muscle was observed.The colonic smooth muscle of control group was treated with different concentration of IL-6,the effects of IL-6 on normal colonic smooth muscle and its response to acetylcholine (Ach) were evaluated.Results In model group,the ratio of sugar consumption to body weight was 0.12±0.03,the percentage of sugar preference was 16.17% ±2.61 %,total walking distance was (741.54 ± 341.10) cm and total times of upright was 15.69 ± 8.00,which were all significantly lower than those of control group (0.18±0.02,25.54 % ± 2.32 %,1336.20 cm±698.80 cm and 24.87±7.90,respectively) (P=0.041,0.044,0.002 and 0.001).It took (109.78±48.00) min for defecating in model group,which was significantly longer than that of control group (28.00±11.10) min (P=0.002).The IL-6 levels were high both in the serum and colon tissue of model group rats.The response of colonic smooth muscle to Ach was weaker in model group than that of control group (P=0.035).In model group,there were no significant difference in the response of colonic smooth muscle to IL-6 at 200,500 and 1000 pg/ml (P =0.935、0.825、0.766 ).After Ach added,there was significant difference in the response to Ach between IL-6 at 500,1000 pg/ml (R=1.1480±0.1000 and 1.1361±0.1500) and control group only added with Ach (R=1.6100±0.4500) (P=0.000 and 0.004).ConclusionIL-6 level increase in chronic stress-induced depression rat model and causes smooth muscle contraction disorder through reducing the sensitivity of intestinal smooth muscle to Ach.
8.Diagnostic value of contrast-enhanced ultrasound endoscopy forupper gastrointestinal tract and adjacent lesions
Wei DENG ; Haixing JIANG ; Shanyu QIN
Chongqing Medicine 2017;46(14):1933-1937
Objective To investigate the diagnostic value of contrast-enhanced ultrasound endoscopy(CE-EUS) for the upper gastrointestinal tract and adjacent lesions.Methods One hundred and eighty samples of upper gastrointestinal tract and adjacent lesions in the First Affiliated Hospital of Guangxi Medical University from June 2014 to March 2015 were collected and performed CE-EUS.The preliminary diagnosis was taken by observing the features of various kinds of solid mass,which was conducted the contrastive analysis with the results of fine needle aspiration cytology(EUS-FNA) and (or) histopathology, biliary brush cytology smear results,operative pathologic findings,and CT,MRI scans and follow-up results.Results In 180 cases of gastrointestinal tract and adjacent placeholder,169 cases of CE-EUS were in line with the final results,while 11 cases were not consistent,and the diagnostic consistency rate was 93.9%.Conclusion CE-EUS can guide EUS-FNA puncture for increasing its positive rate..
9.Study on Mechanism of Effects of Total Flavone of Rhizoma Drynariae on Osteoblasts Cultured in Vitro
Yanming XIE ; Linlin QIN ; Wenlong DENG
China Journal of Traditional Chinese Medicine and Pharmacy 2005;0(03):-
Objective: To study the mechanism of effect of total flavone of rhizoma drynariae in groups with different dosage on osteoblasts cultured in vitro. Methods: To culture osteoblasts with UMA-106-01 osteoblast strain and to observe the activity of ALP and the endosmosis of 3H-TdR. Results: The total flavone of rhizoma drynariae increased the activity of ALP in cells cultured with UMR-106-01 strain. The ALP activities correspondingly changed in the 24h, 48h and 72h, which related to dosage effect and time effect. Among them, the activity in the 48h is the most ideal one. And the amount of endosmosis of the total flavone of rhizoma drynariae to 3H-TdR increased more remarkably in the 48h than that in the 24h and it also related to the time effect. Conclusion: The total flavone of rhizoma drynariae can promote the differentiation and multiplication of osteoblasts.
10.Content Determination of Chlorogenic Acid in Different Dosage Forms of Qingkailing Preparation by RP-HPLC
Xiaoling CAI ; Yiqiang QIN ; Jungang DENG
China Pharmacy 2007;0(31):-
OBJECTIVE: To establish RP-HPLC method for the content determination of chlorogenic acid in 3 kinds of dosage forms of Qingkailing preparation. METHODS: SinoChrom ODS-AP C18(250 mm?4.6 mm, 5 ?m) column was adopted and the mobile phase consisted of methnol-water-acetic acid (25 ∶ 75 ∶ 0.5) at the flow rate of 1.0 mL?min-1. Column temperature was set at 30 ℃ and the detection wavelength was set at 327 nm. RESULTS: The linear range of chlorogenic acid was 3.81~152.50 ?g?mL-1(r=0.999 8), and the average recoveries of the capsules, granules and dripping pills were 99.03%(RSD=2.02%), 99.35%(RSD=1.16%),98.11%(RSD=1.51%). CONCLUSION: The method is sensitive, simple and accurate for the quality control and content determination of 3 kinds of Qingkailing preparations.