1.Changes of Intestinal Mucosal Barrier and Intestinal Flora in Rats with Severe Acute Pancreatitis.
Yan LI ; Hao WU ; Yiyun DENG ; Ruyi LIAO ; Lili XI ; Ping YAO
Journal of Biomedical Engineering 2015;32(2):412-417
This paper is to explore changes of intestinal mucosal barrier, intestinal flora, and bacterial translocation in rats with severe acute pancreatitis (SAP). Twenty four male SD rats were randomly divided into the control group (n = 10) and the experimental group (n = 14). The model of severe acute pancreatitis of rats was induced by the method of injecting adversely 5% sodium taurocholate into the common biliary-pancreatic duct. All of the rats were killed after 24 hours and the level of the serum amylase and the plasma endotoxin was determined after that. The pathological changes of pancreas and small intestine were observed through hematoxylin-eosin staining (HE staining) and the abdominal viscera bacterial translocation rates were tested. With the method of real-time polymerase chain reaction (RT-PCR) the quantity of the intestinal flora was analyzed. In the control group, the level of Escherichia coli, Lactobacillus and Bifidobacterium were 2.08 ± 1.29, 11.04 ± 7.55 and 12.21 ± 4.95, respectively. On the contrast, the level of Escherichia coli in the cecum contents was much higher (9.72 ± 3.58, P < 0.01), while the Lactobacillus number was decreased significantly (0.67 ± 0.34, P < 0.01), and the Bifidobacterium number was also decreased (4.59 ± 3.42, P < 0.05) in the experimental group, so the ratio of Bifidobacterium/Escherichia coli was reversed. Besides, in the experimental group, the plasma endotoxin positive rates and the bacterial translocation rates were much higher (P < 0.01 or P < 0.05) and the pathology scores of pancreas and small intestines were also significantly higher (P < 0.01) than those in the control group. These results indicated that in severe acute pancreatitis rats, the intestinal mucosal barrier was severely damaged and the dysbacteriosis occurs in the intestinal canal. And these might relate to the occurrence and development of multiple organ infection.
Animals
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Bacterial Translocation
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Endotoxins
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Intestinal Mucosa
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pathology
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Intestines
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microbiology
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Male
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Pancreas
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pathology
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Pancreatitis
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microbiology
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pathology
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Rats
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Rats, Sprague-Dawley
2.Drug Utilization Review of Levofloxacin Hydrochloride Injection Based on Weighted TOPSIS Method
Xi CHEN ; Yanmei MAO ; Yanping CHEN ; Yan OU ; Hao LUO ; Qunzhi SHI ; Dandan WEN ; Jing CHEN ; Yiyun XIAO ; Fangqun LIU
China Pharmacy 2015;(32):4471-4475
OBJECTIVE:To provide reference for rational application of Levofloxacin hydrochloride injection in the clinic. METHODS:With reference to the package insert of Levofloxacin hydrochloride injection,the guiding principles of clinical use of antibiotics,by reviewing related literatures,based on the weighted TOPSIS methods,detailed rules for drug utilization review (DUR) of Levofloxacin hydrochloride injection were made. And then 100 archived medical records of Levofloxacin hydrochloride injection in the first half of 2014 were evaluated in respect of medication rationality based on these rules. RESULTS:Among 100 cases,relative proximity of 51 cases was more than 70%(51.0%);that of 37 was between 50%-70%(37.0%);that of 12 cases was between 30%-50%(12.0%). CONCLUSIONS:Established DUR method of Levofloxacin hydrochloride injection on the basis of weighted TOPSIS methods can be used to evaluate the rationality of drug use and promote more rational evaluation behavior. And the results indicate that unreasonable use of Levofloxacin hydrochloride injection is still common in the hospital.
3.Role and mechanism of tranilast preventing the progression of tubulointerstilial ifbrosis in diabetic kidney diseases
Junhui LUO ; Ying LI ; Yang YANG ; Jun LI ; Lin SUN ; Shaobin DUAN ; Hong LIU ; Fuyou LIU ; Yuping LIU ; Yiyun XI ; Yanhua YOU ; Hua LI
Journal of Central South University(Medical Sciences) 2013;38(12):1233-1242
Objective:To determine the role and mechanism of tranilast preventing the progression of tubulointerstilial ifbrosis in diabetic kidney disease (DKD).
Methods:Sprague-Dawley rats were randomly divided into a control group (n=6), DKD model group (n=8), low dose tranilast group [200 mg/(kg.d), n=8], and high dose tranilast group [400 mg/(kg.d), n=8]. Tranilast was administered daily after the model was built. Rats were sacrificed at day 56, 24 hour urine was collected to measure 24-hour urine albumin excretion, and blood was collected to determine the renal function and serum albumin. Then the kidneys were harvested and subjected to studies. The expression of C3aR, E-cadherin,α-SMA, fibronectin(FN), collagen I (Col I), stem cell factor (SCF) and c-kit were detected by immunohistochemical staining respectively. The expression of E-cadherin,α-SMA, FN, Col I, SCF and c-kit protein was analyzed by Western blot, and the expression of FN, Col I, SCF and c-kit mRNA was examined by RT-PCR. Results:Tranilast can inhibit the inifltration of mast cells in the kidneys of DKD rats. The expression ofα-SMA in the kidneys of DKD rats inereased signiifcantly (P<0.05), while the expression of E-cadherin decreased (P<0.05). Tranilast increased the expression of E-cadherin and decreased the expression ofα-SMA in the prophase of DKD dose dependently. The expressions of FN and Col I were increased in the tubulointerstitial ifelds in DKD model rats (P<0.05). After the tranilast treatment, these changes were relieved to a certein degree (P<0.05). The expression of SCF and c-kit in the tubular and interstitial tissue was slight. The increased expressions of SCF and c-kit protein and mRNA in DKD model rats were downregulated by tranilat (P<0.05). The expressions of SCF and c-kit were positively correlated with the infiltration degree of mast cells and the expressions of FN, Col I.
Conclusion:Mast cells participate in and aggravate the renal tubulointerstitial fibrosis in DKD rats. Tranilast can reverse the EMT of renal tubular cells and inhibit the tubulointersitial fibrosis of DKD by blocking the inifltration of mast cells induced by SCF/c-kit pathway.
4.Performance Evaluation of Pharmaceutical Care for Clinical Pharmacists Based on Weighted TOPSIS Method
Zenglin WEI ; Xi CHEN ; Yanmei MAO ; Yiyun XIAO ; Fangqun LIU
China Pharmacy 2020;31(24):3046-3050
OBJECTIVE:To provide reference for performance evaluation of pharmaceutical care for clinical pharmacists. METHODS:Based on literature review ,weighted TOPSIS method was used to formulate a performance evaluation system of pharmaceutical care. The performance of 120 pharmaceutical care work of 5 clinical pharmacists in our hospital from Jan. 2017 to Dec. 2018 was evaluated. RESULTS :The performance evaluation detailed rules of clinical pharmacists ’pharmaceutical care work were successfully constructed ,including pharmaceutical ward round ,medication education ,medication consultation and pharmacy consultation,with a total of 17 evaluation indicators. Among 120 cases,there were 21 cases with relative approach degree >0.6 (17.5%);73 cases had relative approach degree between 0.5 and <0.6(60.8%);26 cases had relative approach degree between 0.4 and <0.5(21.7%). The major problem was that the participation of clinical pharmacists in muti-disciplinary treatment ,the approval of scientific research fund projects were insufficient and not much paper was written. CONCLUSIONS :The performance evaluation system of clinical pharmacists ’pharmaceutical care work based on weighted TOPSIS method is normative and reasonable,and it can be used in the evaluation of clinical pharmacists ’pharmaceutical care work . The results suggest that there are some defects in the performance of clinical pharmacists ’pharmaceutical care work in our hospital ,which need to be improved.
5.Role of protein phosphatase 2A in renal interstitial fibrosis.
Yiyun XI ; Hua LI ; Jun LI ; Ying LI ; Yuping LIU ; Yanhua YOU ; Shaobin DUAN ; Hong LIU ; Lin SUN ; Youming PENG ; Fuyou LIU
Journal of Central South University(Medical Sciences) 2015;40(6):569-578
BACKGROUND:
To explore the role of protein phosphatase 2A (PP2A) in renal interstitial fibrosis by using rat model of unilateral ureteral obstructive (UUO) or cell model of human kidney proximal tubular epithelial (HK)-2 cells treated with transforming growth factor-β1 (TGF-β1).
METHODS:
1) A total of 15 Sprague-Dawley rats were randomly divided into a sham group, a UUO group and an okadaic acid (OA) treated group (OA group) (n=5 in each group). The OA
[30 μg/(kg·d)], diluted with 1.8% alcohol, was given to the rats in the OA group through gastric tube after at 72 h after the surgery, while the equal volume of 1.8% alcohol was given to the rats in the sham group and the UUO group. After sacrificing rats, the blood and kidney were collected to detect the renal function and the expression of PP2Ac, fibronectin (FN), collagen-I (Col-I), E-cadherin (E-cad) and α-smooth muscle actin (α-SMA) by immunohistochemistry, Western blot and RT-PCR, respectively; 2) The likely concentration of OA was determined by Trypan blue dye exclusive assay and methylthiazolyldiphenyl-tetrazolium bromide (MTT) assay. The HK-2 cells were incubated with serum-free Dulbecco's modified eagle medium (DMEM) for 24 h; then they were divided into a control group, a TGF-β1 group (treated with 5 ng/mL TGF-β1 for 24 h) and a TGF-β1+OA group (treated with 5 ng/mL TGF-β1 and 40 nmol/L OA for 24 h). The HK-2 cells were collected and the expression of PP2Ac, FN, Col-I, E-cad and α-SMA were detected by Western blot.
RESULTS:
1) Compared with the sham group, the BUN and Scr in the UUO group increased (both P<0.05); compared with the UUO group, the BUN and Scr in the OA group decreased (both P<0.05); the expression of PP2Ac, FN, Col-I and α-SMA was up-regulated while the expression of E-cad was down-regulated in the UUO group compared with those in the sham group (all P<0.05). The expression of PP2Ac, FN, Col-I and α-SMA was down-regulated while the expressions of E-cad was up-regulated in the OA group compared with those in the UUO group (all P<0.05); 2) The likely concentration of OA was 40 nmol/L. Western blot showed that the expression of PP2Ac, FN, Col-I and α-SMA was up-regulated while the expressions of E-cad was down-regulated in the TGF-β1 group compared with those in the control group (all P<0.05); the expression of PP2Ac, FN, Col-I and α-SMA were down-regulated while the expression of E-cad was up-regulated in the TGF-β1+OA group compared with those in the TGF-β1 group (all P<0.05).
CONCLUSIONS
PP2A might be able to promote the renal interstitial fibrosis.
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Actins
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metabolism
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Animals
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Cadherins
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metabolism
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Cell Line
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Collagen Type I
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metabolism
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Drugs, Chinese Herbal
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Fibronectins
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metabolism
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Fibrosis
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Humans
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Kidney
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metabolism
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pathology
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Kidney Diseases
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enzymology
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Protein Phosphatase 2
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metabolism
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Rats
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Rats, Sprague-Dawley
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Transforming Growth Factor beta1
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pharmacology