Journal of Basic Microbiology

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Cover Picture: J. Basic Microbiol. Supplement 2010

Journal of Basic Microbiology > 50 > S1 > n/a - n/a

Borrelia burgdorferi sensu stricto (B31, flaB‐mutant) shape conversion from a spirochetal silhouette into a sphere shown with scanning electron microscopy. The spirochete's shape conversion begins with a stretching of the membrane, followed by the folding of the spirochete cylinder inside the budding membrane. Finally, the transformed spirochete is globular, often with one end of the protoplasmatic...

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Purification and characterization of novel extracellular cholesterol esterase from Acinetobacter sp.

Liangjun Du, Ying Huo, Fanglan Ge, Jiajun YU, more

Journal of Basic Microbiology > 50 > S1 > S30 - S36

CHE4‐1, a bacterial strain that belongs to the genus Acinetobacter and expresses high level of inducible extracellular cholesterol esterase (CHE), was isolated from feces of carnivore Panthera pardus var. The cholesterol esterase of the strain CHE4‐1 was purified by ultrafiltration followed with DEAE‐Sepharose FF chromatography and Phenyl‐Sepharose CL‐4B chromatography, and then by Sephadex G‐50 gel...

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Identification of bla OXA‐128 and bla OXA‐129, two novel OXA‐type extended‐spectrum‐β‐lactamases in Pseudomonas aeruginosa, in Hunan Province, China

Wen'en Liu, Xiaoyi Liu, Jingzhong Liao, Yunli Zhang, more

Journal of Basic Microbiology > 50 > S1 > S116 - S119

We collected 97 non‐repetitive carbapenemases‐sensitive clinical isolates of Pseudomonas aeruginosa in Human Province, China, during the period of October 2006 to January 2007. From these isolates, we identified two novel oxacillin‐hydrolysing (OXA) type extended‐spectrum‐β‐lactamases (ESBLs): bla OXA‐128 and bla OXA‐129, which contain the mutations of I89V from bla OXA‐56 and K134N from bla OXA‐10,...

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Medical Microbiology

Oliver Kurzai, Erika Kothe

Journal of Basic Microbiology > 50 > S1 > S3 - S3

Infectious diseases can affect the previously healthy adolescent as well as severely immuno‐compromised intensive care unit patients. The effects may be merely annoying, but in many cases they can become life‐threatening. The immediate impact of infectious diseases on everyday life can be seen with Helicobacter pylori, which infects more than 50% of the global population, or Borrelia burgdorferi,...

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Metamorphosis of Borrelia burgdorferi organisms – RNA, lipid and protein composition in context with the spirochetes' shape

Samiya Al‐Robaiy, Hassan Dihazi, Johannes Kacza, Johannes Seeger, more

Journal of Basic Microbiology > 50 > S1 > S5 - S17

Borrelia burgdorferi, the agent of Lyme borreliosis, has the ability to undergo morphological transformation from a motile spirochetal to non‐motile spherical shape when it encounters unfavorable conditions. However, little information is available on the mechanism that enables the bacterium to change its shape and whether major components of the cells – nucleic acids, proteins, lipids – are possibly...

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Molecular typing of Epidermophyton floccosum isolated from patients with dermatophytosis by RAPD‐PCR

Alireza Khosravi, Forough Behzad, Azar Sabokbar, Hojjatollah Shokri, more

Journal of Basic Microbiology > 50 > S1 > S68 - S73

We evaluated the ability of randomly amplified polymorphic DNA (RAPD) to type Epidermophyton floccosum isolates recovered from patients with dermatophytosis originating from different regions of Iran. A total of 13 clinical isolates of E. floccosum obtained from Iranian patients were analyzed by RAPD with 7 arbitrary primers (OPN16, OPD18‚ OPU15, OPX19, R28, OPA04 and OPAA17). Among the applied primers,...

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Antimicrobial resistance, integrons and plasmid replicon typing in multiresistant clinical Escherichia coli strains from Enugu State, Nigeria

Kennedy F. Chah, Ifeoma C. Agbo, Didacus C. Eze, Sergio Somalo, more

Journal of Basic Microbiology > 50 > S1 > S18 - S24

Eleven multiresistant Escherichia coli strains of animal and human origin were assayed for the presence of antimicrobial resistance genes, integrons and associated gene cassettes, as well as plasmid content. Ciprofloxacin‐resistant strains were screened for amino acid changes in GyrA and ParC proteins. The E. coli strains were found to harbor a variety of genes including cmlA, aac (3)‐II, aac (3)‐IV,...

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Mutation of iceA in Helicobacter pylori compromised IL‐8 induction from human gastric epithelial cells

Yi Jun Ma, Guang Cai Duan, Rong Guang Zhang, Qing Tang Fan, more

Journal of Basic Microbiology > 50 > S1 > S83 - S88

IceA of Helicobacter pylori (H. pylori) has been suggested as a virulence factor for the bacteria, but its pathogenic role remains unelucidated. Here, we examined the effect of iceA mutation on the secretion of IL‐8 by human gastric epithelial cells. We also investigated whether the changes in IL‐8 production caused by iceA mutation were associated with impaired adherence of H. pylori to the epithelial...

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Surface hydrophobicity, nutritional contents affect Staphylococcus aureus biofilms and temperature influences its survival in preformed biofilms

Ankita Pagedar, Jitender Singh, Virender K. Batish

Journal of Basic Microbiology > 50 > S1 > S98 - S106

The present study investigates the effect of surface hydrophobicity and media on in vitro biofilm formation potential of S. aureus isolates from two dairies. There was lack of correlation between biofilm formation potential of S. aureus and sampling points but not with the source of isolation. Biofilm formation was more pronounced on hydrophobic polypropylene (PP) than hydrophilic stainless steel...

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Difference and variation of the sef14 operon gene clusters in S. pullorum

C. H. Zhu, J. Wu, W. W. Chen, H. Musa Hassan, more

Journal of Basic Microbiology > 50 > S1 > S120 - S123

SEF14 fimbriae are only found in some strains of serogroup‐D Salmonella such as S. enteritidis, suggesting that SEF14 fimbriae may affect serovar‐specific virulence traits. In this study, we found that prevalence of sefA, sefD and sefR genes in S. dublin and S. enteritidis was 100%. In 18 isolates of S. pullorum, the prevalence of sefA gene was 100%, while the prevalence of sefD and sefR genes was...

article

Survival and adherence of antimicrobial peptide ST4SA, produced by Enterococcus mundtii, at conditions found in the human gastro‐intestinal tract

Leon M. T. Dicks, Monique Granger, Carol A. van Reenen

Journal of Basic Microbiology > 50 > S1 > S25 - S29

The probiotic strain Enterococcus mundtii ST4SA, isolated from soy beans, produces a broad‐spectrum antimicrobial peptide. The aim of this study was to determine if peptide ST4SA could withstand conditions simulating those found in the gastro‐intestinal tract (GIT). Antimicrobial activity of peptide ST4SA has been monitored by growth inhibition of Enterococcus faecium on plates and leakage of β‐galactosidase...

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Mode of action of plantaricin MG, a bacteriocin active against Salmonella typhimurium

Han‐Sheng Gong, Xiang‐Chen Meng, Hui Wang

Journal of Basic Microbiology > 50 > S1 > S37 - S45

Plantaricin MG is a 2,180‐Da bacteriocin produced by Lactobacillus plantarum KLDS1.0391, which was isolated from Chinese traditional fermented cream. Plantaricin MG showed a broad inhibitory activity against not only Gram‐positive bacteria but also Gram‐negative bacteria including Listeria monocytogenes and Salmonella typhimurium. The mode of action of plantaricin MG on S. typhimurium was reported...

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Contents: J. Basic Microbiol. Supplement 2010

Journal of Basic Microbiology > 50 > S1 > S1 - S2

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Augmented adherence and internalization of group A Streptococcus pyogenes to influenza A virus infected MDCK cells

Mohamed M. Hafez, Kouka S. E. Abdel‐Wahab, Daad F. I. El‐Fouhil

Journal of Basic Microbiology > 50 > S1 > S46 - S57

Respiratory tract infections are one of the leading causes of morbidity and mortality. There is considerable epidemiologic evidence that infection with respiratory viruses increases the incidence and severity of secondary bacterial complications. However, very limited number of studies were concerned with the mechanism behind such synergy. In this context, our study aimed to explore the interaction...

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The polymorphism of protein phosphatase Z1 gene in Candida albicans

László Kovács, Ilona Farkas, László Majoros, Márton Miskei, more

Journal of Basic Microbiology > 50 > S1 > S74 - S82

The gene of protein phosphatase Z1 (CaPPZ1)¹ that codes a fungus specific regulatory enzyme was investigated in Candida albicans. After cloning and sequencing CaPPZ1 we revealed the heterozygous nature of the ATCC 10231 reference strain, and identified two new alleles termed CaPPZ1‐2 and CaPPZ1‐3. The genetic polymorphism in CaPPZ1 was extended by finding a fourth allele CaPPZ1‐4 in a clinical isolate...

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Ultrastructure of Aphanomyces cochlioides zoospores and changes during their developmental transitions triggered by the host‐specific flavone cochliophilin A

M. Tofazzal Islam

Journal of Basic Microbiology > 50 > S1 > S58 - S67

Aphanomyces cochlioides is a serious damping‐off causing pathogen of sugar beet, spinach and some other members of Chenopodiaceae and Amaranthaceae. The biflagellated motile zoospores of the pathogen locate their host roots by perceiving the host‐specific flavone cochliophilin A (5‐hydroxy‐6,7‐methylenedioxyflavone), transiently modify into cystospores that germinate prior to penetration. This study...

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Molecular characterization of uropathogenic and diarrheagenic Escherichia coli pathotypes

Adriana Hamond Regua‐Mangia, Kinue Irino, Raquel da Silva Pacheco, Rose Mary Pimentel Bezerra, more

Journal of Basic Microbiology > 50 > S1 > S107 - S115

In this study diarrheagenic and uropathogenic Escherichia coli (UPEC) strains were comparatively characterized according to serotype, hemolytic activity, protein polymorphism among housekeeping enzymes, phylogenetic group and urovirulence genes. Intra‐serogroup/serotype variations were observed. Hemolytic activity was detected in 100%, 93%, 67% and 39% of UPEC, EAEC, EPEC and ETEC strains, respectively...

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Candida species extracellular alcohols: production and effect in sessile cells

Margarida Martins, Mariana Henriques, Joana Azeredo, Sílvia M. Rocha, more

Journal of Basic Microbiology > 50 > S1 > S89 - S97

Cell‐cell signaling alcohol molecules were recently identified in Candida albicans and Candida dubliniensis supernatants. To date, it is not known whether these molecules are produced by other Candida species and their role in biofilm formation is not fully clarified. Herein, Candida parapsilosis and Candida tropicalis extracellular alcohols production by planktonic cultures was analyzed by headspace‐solid‐phase...

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Adenylyl cyclase regulates heavy metal sensitivity, bikaverin production and plant tissue colonization in Fusarium proliferatum

Gábor Kohut, Brigitta Oláh, Attila L. Ádám, Jorge García‐Martínez, more

Journal of Basic Microbiology > 50 > 1 > 59 - 71

A homologue of the adenylyl cyclase (AC) gene of Neurospora crassa, named Fpacy1 was cloned from the genomic library of Fusarium proliferatum ITEM 2287 by screening the library with a DNA fragment amplified by using PCR primers designed from conserved sequences of the catalytic domain of AC genes from other fungi. The deduced FPACY1 protein had 53–77% identity with the AC proteins of other fungi....

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Optimization of media components for laccase production by litter dwelling fungal isolate Fusarium incarnatum LD‐3

Urvish Chhaya, Akshaya Gupte

Journal of Basic Microbiology > 50 > 1 > 43 - 51

Laccase production by solid state fermentation (SSF) using an indigenously isolated litter dwelling fungus Fusarium incarnatum LD‐3 was optimized. Fourteen medium components were screened by the initial screening method of Plackett‐Burman. Each of the components was screened on the basis of ‘p’ (probability value) which was above 95% confidence level. Ortho‐dianisidine, thiamine HCl and CuSO₄ · 5...

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Journal of Basic Microbiology

Cover Picture: J. Basic Microbiol. Supplement 2010

Purification and characterization of novel extracellular cholesterol esterase from Acinetobacter sp.

Identification of bla OXA‐128 and bla OXA‐129, two novel OXA‐type extended‐spectrum‐β‐lactamases in Pseudomonas aeruginosa, in Hunan Province, China

Medical Microbiology

Metamorphosis of Borrelia burgdorferi organisms – RNA, lipid and protein composition in context with the spirochetes' shape

Molecular typing of Epidermophyton floccosum isolated from patients with dermatophytosis by RAPD‐PCR

Antimicrobial resistance, integrons and plasmid replicon typing in multiresistant clinical Escherichia coli strains from Enugu State, Nigeria

Mutation of iceA in Helicobacter pylori compromised IL‐8 induction from human gastric epithelial cells

Surface hydrophobicity, nutritional contents affect Staphylococcus aureus biofilms and temperature influences its survival in preformed biofilms

Difference and variation of the sef14 operon gene clusters in S. pullorum

Survival and adherence of antimicrobial peptide ST4SA, produced by Enterococcus mundtii, at conditions found in the human gastro‐intestinal tract

Mode of action of plantaricin MG, a bacteriocin active against Salmonella typhimurium

Contents: J. Basic Microbiol. Supplement 2010

Augmented adherence and internalization of group A Streptococcus pyogenes to influenza A virus infected MDCK cells

The polymorphism of protein phosphatase Z1 gene in Candida albicans

Ultrastructure of Aphanomyces cochlioides zoospores and changes during their developmental transitions triggered by the host‐specific flavone cochliophilin A

Molecular characterization of uropathogenic and diarrheagenic Escherichia coli pathotypes

Candida species extracellular alcohols: production and effect in sessile cells

Adenylyl cyclase regulates heavy metal sensitivity, bikaverin production and plant tissue colonization in Fusarium proliferatum

Optimization of media components for laccase production by litter dwelling fungal isolate Fusarium incarnatum LD‐3

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Journal of Basic Microbiology

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