Résumé
OBJECTIVE： To investigate the effects of Buyang huanwu decoction on the expression of MMPs and TIMPs in cardiac tissue of viral myocarditis （VMC） model mice. METHODS： Male BALb/c mice were randomly divided into control group， model group， positive control group [captopril， 100 mg/（kg·d）]， Buyang huanwu decoction low-dose， medium-dose and high-dose groups [6， 18， 36 g/（kg·d）]， with 24 mice in each group. Except for control group， other groups were given Coxsackie virus B3 once intraperitoneally to induce VMC model. After modeling， control group and model group were given constant volume of normal saline intragastrically； administration groups were given relevant medicine intragastrically； once a day， for consecutive 30 days. The general situation of mice in each group was observed. The day of inoculation was set at 0 d， heart mass to body mass ratio （HW/BW） was measured at 4， 10， 20， 30 d after inoculation. The morphological characteristics of myocardium were observed by HE staining， and the myocardial histopathological scores of myocardium were evaluated. The distribution of type Ⅰ and Ⅲ collagen in myocardium was observed by Abcam picrosirius red staining， and the ratio of type Ⅰ to Ⅲ collagen was calculated. At 30 d， relative expressions of MMP-1， MMP-3， MMP-9 and TIMP-1 in cardiac tissue were detected by Western blotting assay， and the ratio of MMPs to TIMPs was calculated. RESULTS： Compared with control group， mice in model group suffered from irritability， arch back， alleviation of stimulation response， reduction of body mass and even mental depression. Typical inflammatory changes and local interstitial hyperemia were observed in the myocardium， accompanied by a large number of lymphocyte infiltration and distribution of type Ⅰ and Ⅲ collagen. HW/BW （at different time points of 10-30 d）， myocardial histopathological score （at different time points of 4-30 d）， ratio of type Ⅰ and Ⅲ collagen （at different time points of 4-30 d）， the expression of MMP-1 and MMP-9， ratio of MMPs to TIMPs were increased significantly， while the expression of MMP-3 and TIMP-1 were decreased significantly （P＜0.05）. Compared with model group， above symptoms of mice in administration groups were improved to different extents. HW/BW [at different time points of 10-30 d in administration groups （except for 10 d in Buyang huanwu decoction low-dose group）]， myocardial histopathological score （at different time points of 10-30 d in administration groups）， ratio of type Ⅰand Ⅲ collagen （at different time points of 4-10 d in positive control group and Buyang huanwu decoction high-dose group， at different time points of 20-30 d in Buyang huanwu decoction low-dose and medium-dose groups）， the expression of MMP-1 （positive control group and Buyang huanwu decoction high-dose group） and MMP-9 （administration groups）， ratio of MMPs to TIMPs （administration groups） were decreased significantly， while the expression of MMP-3 （positive control group， Buyang huanwu decoction low-dose and high-dose groups） and TIMP-1 （administration groups） were increased significantly （P＜0.05）. CONCLUSIONS： Buyang huanwu decoction can inhibit myocardial fibrosis of VMC model mice by inhibiting myocardial collagen hyperplasia， regulating the expression of MMPs and TIMPs， improving MMPs/TIMPs imbalance.
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Objective To investigate countermeasures and effects of clinical pharmacists participating in the treatment for fluconazole-exposure candidemia,and to provide reference for infectious control in the clinic.Methods Clinical pharmacists used their professional knowledge and suggested utilizing micafungin to treat candidemia,when voriconazole was ineffective in a patient with candidemia and fluconazole exposure history.Results The patient′s candida bloodstream infection was finally con-trolled.Clinical pharmacists were highly complimented from the doctors,nurses and patients.Conclusion Micafungin is effec-tive in treatment of candidemia with a recent (＜30 days) fluconazole exposure history.The participation of clinical pharmacists is helpful to develop individual medicinal therapy in clinical treatment and can improve therapeutic effects.
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Objective To study the clinical efficacy of tigecycline in combination with cefoperazone‐sulbactam for treatment of hospital‐acquired pneumonia caused by extensively drug resistant Acinetobacter baumannii .Methods A total of 53 patients with hospital‐acquired pneumonia caused by extensively drug resistant A .baumannii were randomized to receive tigecycline plus cefoperazone‐sulbactam ,or tigecycline alone as control .The duration of treatment was 14 days for both groups .Results The combination therapy group was superior to control group in terms of overall efficacy rate(70 .4% vs 38 .5% ,P=0 .020) .The bacterial clearance rate (55 .6% vs 38 .5% ,P>0 .05)and incidence of adverse reactions (14 .3% vs 15 .4% ,P>0 .05)did not show significant difference between the two treatment groups .Conclusions High dose cefoperazone‐sulbactam can improve the antimicrobial activity of tigecycline in the treatment of hospital‐acquired pneumonia caused by extensively drug resistant A . baumannii ,which may be a new therapy strategy for such infections .
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To investigate the effect of losartan on the axis of prolylcarboxypeptidase (PRCP)--kallikrein of the two-kidney, one-clipped (2K1C) hypertensives rats, and explore the novel protection mechanism of losartan on the kidney. Sprague-Dawley (SD) rats were used to develop the 2K1C hypertensive rats. Then, the rats were treated with prazosin (5 mg x kg(-1) x d(-1)) or losartan (5, 15 and 45 mg x kg(-1) x d(-1)) or vehicle, separately. At the same time, the blood pressures were observed. After treated for four weeks, the ratio of right kidney weight and body weight, the change of glomerular morphology, and K+, Na+, creatinine and blood urea nitrogen (BUN) of the serum were used for evaluation of kidney. The expressions of PRCP mRNA in the kidneys were determined by RT-PCR. The protein levels of PRCP, tissue kallikrein, plasma kallikrein, TGF-beta1 in kidney or plasma were measured by Western blotting. Results showed that the changes of body weight and kidney weight ratio, glomerular fibrosis degree and the biochemistrical index of serum induced by hypertension were relieved when the hypertensive rats treated with losartan for four weeks. Meanwhile, treatment of losartan also significantly decreased expression of TGF-beta1 and increased expressions of PRCP, plasma kallikrein and tissue kallikrein. The protective effects of losartan on the kidney of 2K1C hypertensive rats are activation of the axis of PRCP-kallikrein and reducing the expression of TGF-beta1.