显齿蛇葡萄总黄酮对口腔常见致病菌抑菌作用的研究

目的 研究显齿蛇葡萄总黄酮体外和体内给药对口腔常见致病菌的抑菌作用。方法 对口腔常见致病菌的标准株和临床分离株,采用相应培养基体外培养增殖,试管稀释法测定最低抑菌浓度、MIC50和MIC90,平板法测定抑菌强度,小鼠细菌致死量法测定口腔局部给药对动物的保护作用。结果 显齿蛇葡萄总黄酮对试验菌的抑菌浓度大多<1.0 mg·mL-1,口腔黏膜局部给药对金黄色葡萄球菌和甲型溶血型链球菌感染小鼠具有保护作用,提高动物存活率。结论:显齿蛇葡萄总黄酮局部用药时,药物浓度可以达抑菌浓度以上,并有一定的体内抑菌作用。     

妈咪爱对肠道致病菌和条件致病菌及其L型的抑菌作用

目的：探讨妈咪爱对肠道致病菌、条件致病菌及其L型的抑菌作用。方法：采用试管连续稀释法，测定不同浓度的妈咪爱对肠道致病菌、条件致病菌及其L型的光密度值的影响。结果：妈咪爱对大肠埃希菌、福氏志贺菌、伤寒沙门菌、金黄色葡萄球、白假丝酵母菌及其L型皆有不同程度的抑菌作用，且浓度越大，抑菌作用越强，相同浓度的妈咪爱对原型菌的抑菌作用强于细菌L型。结论：妈咪爱是一种疗效很好的微生态制剂，可用于治疗由大肠埃希菌、福氏志贺菌、伤寒沙门菌、金黄色葡萄球菌、白假丝酵母菌及其L型引起的肠道感染。     

Clinical study of herbal mixture “Diding Oral Medicine” as an alternative to preventative antibiotics in perioperative hemorrhoids: A CARE-compliant article

To study the clinical effects of Diding Oral Medicine as an alternative to preventative antibiotics in perioperative hemorrhoids.From August 2017 to February 2018, a total of 214 patients who were treated with external exfoliation and internal ligation of mixed hemorrhoids in our hospital were divided into the control group and experimental group by way of stratified random (107 cases in each group). Patients in the control group were given antibiotics preventatively before operation, while patients in the experimental group took Diding Oral Medicine before operation, and the white blood cell count, neutrophil count, wound recovery, pain score, anal bulge score, and pathogen culture of wound secretions were compared between the 2 groups.There was no significant difference in white blood cell count and neutrophil count between both groups before and after operation (P > .05). The wound seepage score, wound edema score, and wound area score in the experimental group were lower than those in the control group, and the wound healing in the experimental group was shorter than that in the control group (all P < .05). The pain score and anal bulge score of the experimental group were decreased significantly compared to the control group (P < .05). In addition, the detection rate of pathogenic bacteria in the experimental group was downregulated significantly compared to the control group (P < .05).The Diding Oral Medicine has prominent bacteriostatic and antibacterial effects on patients with hemorrhoids during perioperative period, and promotes wound healing, reduces pain stress, and anal bulge.     

三黄泻心汤水提物对痤疮丙酸杆菌体外抑制实验

目的 研究三黄泻心汤水提物对痤疮丙酸杆菌的体外抑菌作用.方法 采用厌氧培养法,常规平皿法(37℃厌氧培养48 h)对痤疮的主要致病菌痤疮丙酸杆菌进行培养并且观察其在不同浓度情况下三黄泻心汤的体外抑菌效果,求出三黄泻心汤水提物最小抑菌浓度(MIC),并与乳糖酸红霉素对痤疮丙酸杆菌的抑菌浓度相对比.结果 三黄泻心汤在浓度为6.25 mg/mL时对痤疮丙酸杆菌完全抑制其生长.结论 三黄泻心汤对痤疮的主要致病菌痤疮丙酸杆菌有良好的体外抑菌作用.     

红豆属植物化学成分及其药理活性研究进展

豆科红豆属Ormosia Jacks.植物共有135种,中国有35种,2变种,2变型,主要分布于福建、广东、广西、云南等地,具有较高的药用价值。目前,红豆属植物中已发现的化学成分主要有生物碱类、黄酮类、三萜类及其他类型化合物,具有良好的抗氧化、抗癌、杀虫、抑菌等药理活性。对红豆属植物的化学成分及药理活性进行综述,为进一步开发该属药用植物资源和有效物质基础提供理论依据。     

碘络醚与磺胺嘧啶银最小抑菌浓度的比较

经比较，碘络醚体外最小抑菌浓度高于磺胺嘧啶银。     

二氯异氰尿酸钠对肠道杆菌抑制与杀灭效果的试验观察

经测定，二氯异氰酸钠对７种肠道杆菌的最低抑制有效浓度为７５～１５０ｍｇ／Ｌ（有效氯）。其含２００ｍｇ／Ｌ有效氯的溶液，对上述细菌的杀灭作用时间随菌种而不同，介于２～３０分钟。该消毒剂溶液对苹果、黄瓜和手指上弗氏志贺氏菌有良好的杀灭作用。     

苯甲酸复配中药抽提液的抑菌效果及刺激性

目的：观察苯甲酸复配中药抽提液、苯甲酸抑菌剂及单纯中药抽提液的抑菌效果及其刺激性。方法：采用琼脂扩散法和动物试验对3种抑菌剂进行抑菌效果测定和刺激性试验。结果：苯甲酸复配中药抽提液和苯甲酸抑菌剂对金黄色葡萄球菌、大肠埃希菌和白色假丝酵母的抑菌圈直径比单纯中药抽提液显著增加,苯甲酸复配中药抽提液对实验动物的刺激性低于苯甲酸抑菌剂。结论：苯甲酸复配中药提取液抑菌效果显著强于纯中药抑菌剂,其刺激性低于苯甲酸抑菌剂。     

Formation and Investigation of Physicochemical,Biological and Bacteriostatic Properties of Nanocomposite Foils Containing Silver Nanoparticles and Graphene Oxide in Hyaluronic Acid Matrix

Natural polysaccharides, including hyaluronic acid, find a wide range of applications in biomedical sciences. There is a growing interest in nanocomposites containing hyaluronic acid and nanoparticles such as nanometals or graphene. In this study, we prepared foils of pure sodium hyaluronate and sodium hyaluronate containing nanosilver, graphene oxide, nanosilver/graphene oxide and characterized their properties. UV-vis spectroscopy and scanning electron microscopy (SEM) confirmed the formation of 10–20 nm silver nanoparticles. The structural changes were investigated using Fourier transforms infrared (FTIR) spectra and size exclusion chromatography. The obtained results suggest changes in molecular weights in the samples containing nanoparticles, which was highest in a sample containing nanosilver/graphene oxide. We also assessed the mechanical properties of the foils (thickness, tensile strength and elongation at break) and their wettability. The foils containing nanosilver and nanosilver/graphene oxide presented bacteriostatic activity against E. coli, Staphylococcus spp. and Bacillus spp., which was not observed in the control and sample containing graphene oxide. The composites containing graphene oxide and nanosilver/graphene oxide exhibited a cytotoxic effect on human melanoma WM266-4 cell lines (ATCC, Manassas, VA, USA).     

不同类型抗菌织物的抗菌性能研究

摘要 目的 观察14种新型抗菌织物的抑菌性能。方法 采用振荡瓶法和吸附法,对14种不同类型抗菌织物的抗菌性能和安全性进行评价。结果 抗菌无纺布、护理无纺布和有机抗菌无纺布对大肠杆菌、金黄色葡萄球菌和白色念珠菌抑菌率均＞99%;涤棉混纺面料、徕卡抗菌面料和洗涤50次后的抗菌面料对白色念珠菌的抑菌率均＞99%。抗菌织物所用抗菌制剂对小鼠急性经口毒性属于无毒级物质,对家兔皮肤黏膜均无刺激性。结论 本研究14种抗菌织物均不同程度显示出良好的抑菌效果,对实验动物毒性实验结果显示出较好的安全性。