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Objective To evaluate the effects of midazolam pretreatment on inflammatory responses and cell apoptosis during intestinal ischemia-reperfusion (I/R) in mice.Methods Thirty healthy male Kunming mice,weighing 18-22 g,were equally and randomly divided into 3 groups using a random number table:sham operation group (S group),I/R group,and midazolam pretreatment group (M group).Intestinal I/R was produced by occlusion of the superior mesenteric artery for 20 min followed by reperfusion.In group M,midazolam 1 mg/kg was injected intraperitoneally,and intestinal I/R was produced 30 min later.At 24 h of reperfusion,the mice were sacrificed,and intestinal tissues were removed for microscopic examination and for determination of the expression of interleukin-6 (IL-6),tumor necrosis factor-alpha (TNF-α) and caspase-3.Intestinal damage was assessed and scored according to Chiu.Results Compared with group S,Chiu's scores were significantly increased,and the expression of IL-6,TNF-α and caspase-3 was significantly up-regulated in I/R and M groups (P＜0.05).Compared with group I/R,Chiu's scores were significantly decreased,and the expression of IL-6,TNF-α and caspase-3 was significantly down-regulated in group M (P＜0.05).Conclusion Midazolam pretreatment can reduce intestinal I/R injury,and the mechanism is related to inhibition of inflammatory responses and cell apoptosis in mice.
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OBJECTIVES@#To observe the morphological characteristic indexes of the muscle tissues from different species and to establish a discriminant equation of species identification and tried to establish a new method for species identification.@*METHODS@#Three different parts of the muscle tissues, triceps brachii, biceps femoris and erector spinae from adult human corpses, triceps brachii, biceps femoris and longissimus dorsi muscle from swine, sheep and cattle reached the slaughter age, were extracted respectively （20 for each group） and deal the tissues into paraffin sections. Eleven observational indexes of the muscle tissues from adult human corpses, swine, sheep and cattle were detected. Statistical methods were used to analyze the data and a discriminant equation of species identification was established.@*RESULTS@#Four observation indicators were screened for establishing the discriminant equation of species identification among human, swine, sheep and cattle. The accurate rate of this method for human muscle tissue identification was 90%, and for swine, sheep, and cattle muscle tissue were 80%, 100% and 80% respectively.@*CONCLUSIONS@#The morphological method provides a new method for the species identification of the muscle tissue among human, swine, sheep and cattle, and it can be used as a reference for the identification of animal species.
Subject(s)
Animals , Cattle , Humans , Cadaver , Forensic Anthropology , Muscle, Skeletal/anatomy & histology , Sheep , SwineABSTRACT
Objective To study the impacts of alcohol dependence on the anticonvulsant effect of diazepam. Meth?ods Kunming mice (n=36) were divided into 3 groups (n=12 in each group), Alcohol Dependence Group(A group), Diaze?pam Group(D group)and Normal Saline Group(N group). A group received an intraperitoneal injection with a 0.2 mL dose of 0.8%alcohol in NS (normal saline) , while both D and N group received an injection with a 0.2 mL dose of NS without alco?hol , twice a day. Mice’s autonomic activities were monitored every day. After 7 days, the electroconvulsive experiment was performed. Both A and D group were given a weight-based dose of 0.05 mL/10 g of 0.05%diazepam via intraperitoneal injec? tion, while N group was given a 0.05 mL/10 g dose of NS. Before administration and after 15, 30, 60 min of administration, the convulsion threshold of each group was measured. Results The count of autonomic activity of mice in A group was less than that of mice in D and N group during the 2nd day to 6th day(P0.05). The convulsion threshold of mice in A group was higher than that of mice in D and N group before administration(P0.05). After 15 min of administration, the convulsion threshold of mice in D group was high?er than that of mice in A and N group(P0.05). Conclusion Alcohol dependence has anticon?vulsant effect. Alcohol dependence weakens the anticonvulsant effect of diazepam.
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Using of clearing zones on pachyman agar medium, there are 217 plant endophytic actinomycetes, producing ?-1,3-glucanase were screened. 45.6% of the strains produced ?-1,3-glucanase, in which the strains from cucumber are up to 38. The percentages of endophytic actinomycetes from different hosts produceing ?-1,3-glucanases were different. The percentage of the strains in Rhizoma Polygonatum produced ?-1,3-glucanases is the highest, up to 88.9%. The Inhibited effects of plant endophytic actinomycetes which produced extracellular ?-1,3-glucanases on mycelium growth of Sclerotinia sclerotiorum were detected in vitro. Cucumber endophytic actinomycete gCLA4 strain was screened out from 99 isolates, which can strongly inhibit the growth of S. sclerotiorum. The optimal ?-1,3-glucanases fermentation conditions of strain gCLA4 were investigated, they were pachyman 0.2%, peptone as nitrogen, pH 7～8 for 5 days. The ?-1,3-glucanases of strain gCLA4 had some inhibiting efficiency on 13 plant pathogens, in which inhibiting efficiency to Botryosphaeria dothidea was the strongest.