Acta microbiologica Polonica最新文献_第2页

Increased synthesis of dihydroxybenzoic acid in the presence of aluminum by Rhizobium MO1. 铝存在下根瘤菌MO1合成二羟基苯甲酸增加。

Acta microbiologica Polonica Pub Date : 2003-01-01

Mithu De, Mousumi Basu, Pran K Chakrabartty

引用次数: 0

Effect of gamma irradiation on elimination of aflatoxins produced by apple mycoflora in apple fruits. 辐照对苹果果实中苹果分枝杆菌产生的黄曲霉毒素的清除作用。

Acta microbiologica Polonica Pub Date : 2003-01-01

A F Afifi, M A Foaad, E M Fawzi

引用次数: 0

Differential adaptation of membranes of two osmotolerant fungi, Aspergillus chevalieri and Penicillium expansum to high sucrose concentrations. 两种抗渗透真菌chevaliaspergillus和Penicillium expansum的膜对高浓度蔗糖的差异适应。

Acta microbiologica Polonica Pub Date : 2003-01-01

M A Hefnawy, A M Abou-Zeid

{"title":"Differential adaptation of membranes of two osmotolerant fungi, Aspergillus chevalieri and Penicillium expansum to high sucrose concentrations.","authors":"M A Hefnawy, A M Abou-Zeid","doi":"","DOIUrl":"","url":null,"abstract":"Aspergillus chevalieri and Penicillium expansum were able to tolerate sucrose concentrations in the growth media up to 80% (w/v). At 50% sucrose the growth rate is approximately 1.4 and 1.2 times, respectively, higher than in the control. While at 80% sucrose it drops to 35% and 45% of the control level for both fungi. Lipids and proteins in plasma membranes increased with increasing sucrose concentrations in the growth medium. Phospholipid content in membranes of both organisms being also increased, phosphatidyl glycerol was the major detected phospholipid and represented the highest increase. The fatty acid composition of fraction enriched plasma membrane of both fungi changed when they were grown in high sucrose concentrations. Some fatty acids which had not been detected in control cultures were present and the proportions of other fatty acids changed. At 50% sucrose the unsaturation index of membranes decreased by 20-25% in both fungi, indicating that the plasma membrane is less fluid at this concentration. At 80% sucrose a similar trend was observed for P. expansum but for A. chevalieri the unsaturation index was little changed compared with the control. The fluorescence polarization values of 1,6-diphenyl 1,3,5-hexatriene (DPH) in membranes of both fungi grown at 80% sucrose increased, indicating a decrease in membrane fluidity. At 50% sucrose the increase in saturation of membrane fatty acids would tend to reduce membrane fluidity but in A. chevalieri at 80% sucrose fatty acids did not become more saturated. In this case the marked increase in sterols at this sucrose concentration may be responsible for low membrane fluidity.","PeriodicalId":75388,"journal":{"name":"Acta microbiologica Polonica","volume":"52 1","pages":"53-64"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"22529166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The ability of Candida spp. strains to induce production of tumor necrosis factor and interleukin-6 by whole blood cells. 念珠菌菌株诱导全血细胞产生肿瘤坏死因子和白细胞介素-6的能力。

Acta microbiologica Polonica Pub Date : 2003-01-01

Urszula Nawrot, Kryspina Grzybek-Hryncewicz, Anna Czarny

引用次数: 0

Sanitary and bacteriological aspects of sewage treatment. 污水处理的卫生和细菌方面。

Acta microbiologica Polonica Pub Date : 2003-01-01

Zofia Filipkowska

{"title":"Sanitary and bacteriological aspects of sewage treatment.","authors":"Zofia Filipkowska","doi":"","DOIUrl":"","url":null,"abstract":"A study into the removal of contamination load and indicator bacteria was carried out in 1992-1996 in the mechanical, biological and chemical waste-water treatment plant WTP in Lezany, in the County of Reszel, in the Province of Warmia and Mazury in Poland. The results of chemical analyses found a high efficiency of removal of carbon compounds, COD (90%) and BOD (98%), in the process of purification of household sewage. In addition, a high effectiveness of total nitrogen, on average 71%, and unsatisfactory removal of ammonia nitrogen and phosphorus compounds were found. The results of microbiological analyses confirmed the high efficiency of removal of indicator bacteria in the process of sewage treatment from 94 to 97%. In the sewage after the final phase of purification in stabilization ponds, the following pathogenic bacteria were identified with the use of the EPL 21tests: Escherichia coli, Enterobacter agglomerans, Enterobacter aerogenes, Enterobacter cloacae, Enterobacter georgoriae, Citrobacter freundii, Klebsiella pnemoniae, Klebsiella oxytoca, Klebsiella ozaenae, Ervinia herbicola, Edwardsiella tarda, Serratia odoriefra, Serratia marcescens, Providencia alcalifaciens, Hafnia alvei, Yersina pestis, Yersina pseudotuberculosis, Yersinia fredericksenii, Salmonella spp., Shigella dysenteriae, Aeromons hydrophila, Pseudomonas aerulginosa. The obtained results show that although the sewage purification system is efficient and reduces the contamination load to the level required by the regulations (Ministry of Environmental Protection, Natural Resources and Forestry from 20 September 1991) and removes a great percentage of indicator bacteria, the purified sewage may be a source of pathogenic bacteria in inland waters.","PeriodicalId":75388,"journal":{"name":"Acta microbiologica Polonica","volume":"52 Suppl ","pages":"57-66"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24447607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Amlodipine: a cardiovascular drug with powerful antimicrobial property. 氨氯地平:一种具有强大抗菌性能的心血管药物。

Acta microbiologica Polonica Pub Date : 2003-01-01

K Asok Kumar, Kumkum Ganguly, Kaushiki Mazumdar, N K Dutta, Sujata G Dastidar, A N Chakrabarty

{"title":"Amlodipine: a cardiovascular drug with powerful antimicrobial property.","authors":"K Asok Kumar, Kumkum Ganguly, Kaushiki Mazumdar, N K Dutta, Sujata G Dastidar, A N Chakrabarty","doi":"","DOIUrl":"","url":null,"abstract":"Ten cardiovascular drugs were procured in pure form from their manufacturers in India and screened for antimicrobial property against fifteen known bacteria belonging to both gram-positive and gram-negative types. These bacteria were inhibited by the common antibiotics at 1-5 mg ml(-1) level through our earlier studies. Since most of the bacteria were moderate to highly responsive to amlodipine, this compound was further tested in vitro against 504 bacteria comprising 4 genera of gram-positive and 15 genera of gram-negative bacteria. Most of these were inhibited by the drug at 50-200 microg ml(-1) level and few strains were sensitive even at lower concentrations (10 microg ml(-1)). The bacteria could be arranged in the decreasing order of sensitivity towards amlodipine in the following manner: Staphylococcus aureus, Vibrio cholerae, Vibrio parahemolyticus, Shigella spp., Salmonella spp., Bacillus spp., whereas Escherichia coli, Klebsiella spp. and Pseudomonas aeruginosa were found to be resistant to the lower concentrations of the drug. Amlodipine was found to be bactericidal in nature when its mode of action was studied against S. aureus 6571, V. cholerae 14035 and Sh boydii 8 NCTC 254/66. The antibacterial activity of amlodipine could also be confirmed in vivo. When it was given to Swiss strain of white mice at different dosages (30 and 60 microg/mouse), it could significantly protect the animals challenged with 50 MLD of Salmonella typhimurium NCTC 74. According to Chi square test the in vivo data were highly significant (p<0.001).","PeriodicalId":75388,"journal":{"name":"Acta microbiologica Polonica","volume":"52 3","pages":"285-92"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24179680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enteropathogenic activity and invasion of HEp-2 cells by Aeromonas caviae clinical isolates. 洞穴气单胞菌临床分离株对HEp-2细胞的侵袭及肠致病性研究。

Acta microbiologica Polonica Pub Date : 2003-01-01

Sylwia Krzymińska, Adam Kaznowski, Karolina Lindner, Magdalena Mnichowska

引用次数: 0

Environmental contamination with protozoan parasite infective stages: biology and risk assessment. 环境污染与原生动物寄生虫感染阶段:生物学和风险评估。

Acta microbiologica Polonica Pub Date : 2003-01-01

Edward Siński

引用次数: 0

Tolerance to creosote oil of bacteria of the genus Pseudomonas isolated from the wood of coniferous trees. 从针叶树木材中分离的假单胞菌属细菌对杂酚油的耐受性。

Acta microbiologica Polonica Pub Date : 2003-01-01

Julitta Gajewska, Anita Miszczyk, Zdzisław Markiewicz