Antifungal Activity of Chitosan Polymeric Nanoparticles and Correlation with Their pH Against Mucor circinelloides Causing Mucormycosis, Along with Penicillium notatum and Aspergillus Species
Curr Microbiol. 2023 Dec 22;81(1):47. doi: 10.1007/s00284-023-03555-y.ABSTRACTMucormycosis is uncommon, yet it is more prevalent among individuals with underlying health conditions and those who are immunocompromised. Chitosan is studied because of its appealing properties and diverse applications. The purpose of this work is to synthesize chitosan nanoparticles (CSNPs) by ionic gelation method at various pH levels and test them against Mucor and other filamentous fungus. Field Emission Scanning Electron Microscope, Zeta sizer, Zeta potential, and Fourier Transformed Infrared Spectroscopy were used to characterize CSNPs. H...
Source: Current Microbiology - December 22, 2023 Category: Microbiology Authors: Fatma I Abo El-Ela Walid Hamdy Hassan Alaa M Amer S I El-Dek Source Type: research
Assessment of Antimicrobial and Antioxidant Potential of Oscillatoria sancta and Oscillatoria proteus Isolated from Chilika Lake
Curr Microbiol. 2023 Dec 22;81(1):46. doi: 10.1007/s00284-023-03563-y.ABSTRACTFilamentous cyanobacteria are a promising source of biologically active secondary metabolites with antioxidant, antimicrobial, antiviral and anticancer properties. Previously, cyanobacteria isolated from fresh and marine water were studied extensively, but those isolated from brackish water were less investigated. The purpose of this study was to examine the antimicrobial activities as well as the potential antioxidant capacity of two cyanobacterial strains (Oscillatoria proteus and Oscillatoria sancta) obtained from Chilika Lake. The pigment and...
Source: Current Microbiology - December 22, 2023 Category: Microbiology Authors: Sabyasachy Parida Satyabrata Dash Bijayananda Sahoo Biswajit Rath Source Type: research
C-Reactive Protein Levels Correlate with Measures of Dysglycemia and Gut Microbiome Profiles
Curr Microbiol. 2023 Dec 21;81(1):45. doi: 10.1007/s00284-023-03560-1.ABSTRACTC-reactive protein (CRP) is a commonly used marker of low-grade inflammation as well as a marker of acute infection. CRP levels are elevated in those with diabetes and increased CRP concentrations are a risk factor for developing type 2 diabetes. Gut microbiome effects on metabolism and immune responses can impact chronic inflammation, including affecting CRP levels, that in turn can lead to the development and maintenance of dysglycemia. Using a high-sensitivity C-reactive protein (hsCRP) assay capable of detecting subtle changes in C-reactive p...
Source: Current Microbiology - December 21, 2023 Category: Microbiology Authors: Eric L Brown Heather T Essigmann Kristi L Hoffman Joseph Petrosino Goo Jun Sharon A Brown David Aguilar Craig L Hanis Source Type: research
Endophytic Alkalotolerant Plant Growth-Promoting Bacteria Render Maize (Zea mays L.) Growth Under Alkaline Stress
This study investigates the role of bacterial endophytes from extreme alkaline environments in alleviating alkaline stress and plant development. Stressful environmental factors, such as soil acidity and alkalinity/sodicity, frequently affect plant development. In the present study, alkaline-tolerant endophytic strains were isolated from three plant species Saccharum munja, Calotropis procera, and Chenopodium album, and 15 out of the total of 48 isolates were selected for further examination of their abiotic stress tolerance. Molecular analysis based on 16S rRNA gene sequencing revealed strains from Enterobacter, Acinetoba...
Source: Current Microbiology - December 20, 2023 Category: Microbiology Authors: Srishti Kar Shashank Kumar Mishra Sankalp Misra Renuka Agarwal Susheel Kumar Puneet Singh Chauhan Source Type: research
Pararhizobium qamdonense sp. nov., Isolated from an Alpine Soil in Tibet and the Reclassification of Rhizobium gei Shi et al. 2016 as Pararhizobium gei comb. nov
Curr Microbiol. 2023 Dec 20;81(1):44. doi: 10.1007/s00284-023-03567-8.ABSTRACTA novel Gram-stain-negative, aerobic, rod-shaped bacterium named T808T was isolated from an alpine soil in Qamdo, Tibet, PR China. Strain T808T grew at 5-30℃, pH 5.0-9.0 (optimum, 25℃ and pH 7.0-8.0) with 0-2% (w/v) NaCl (optimum, 0%). The 16S rRNA gene sequences of strain T808T showed the highest similarity with Pararhizobium herbae CCBAU83011T (98.8%), followed by Pararhizobium polonicum F5.1T (98.7%), Pararhizobium giardinii H152T (98.5%), Rhizobium gei ZFJT-2 T (98.4%), and Pararhizobium antarcticum NAQVI59T (97.5%). The highest digital D...
Source: Current Microbiology - December 20, 2023 Category: Microbiology Authors: Yi-Fan Zhang Yan-Na Dai Ji-Feng Pu Xiao-Feng Yang Hu-Hu Liu Hu Pan Yun Tian Source Type: research
Endophytic Alkalotolerant Plant Growth-Promoting Bacteria Render Maize (Zea mays L.) Growth Under Alkaline Stress
This study investigates the role of bacterial endophytes from extreme alkaline environments in alleviating alkaline stress and plant development. Stressful environmental factors, such as soil acidity and alkalinity/sodicity, frequently affect plant development. In the present study, alkaline-tolerant endophytic strains were isolated from three plant species Saccharum munja, Calotropis procera, and Chenopodium album, and 15 out of the total of 48 isolates were selected for further examination of their abiotic stress tolerance. Molecular analysis based on 16S rRNA gene sequencing revealed strains from Enterobacter, Acinetoba...
Source: Current Microbiology - December 20, 2023 Category: Microbiology Authors: Srishti Kar Shashank Kumar Mishra Sankalp Misra Renuka Agarwal Susheel Kumar Puneet Singh Chauhan Source Type: research
Pararhizobium qamdonense sp. nov., Isolated from an Alpine Soil in Tibet and the Reclassification of Rhizobium gei Shi et al. 2016 as Pararhizobium gei comb. nov
Curr Microbiol. 2023 Dec 20;81(1):44. doi: 10.1007/s00284-023-03567-8.ABSTRACTA novel Gram-stain-negative, aerobic, rod-shaped bacterium named T808T was isolated from an alpine soil in Qamdo, Tibet, PR China. Strain T808T grew at 5-30℃, pH 5.0-9.0 (optimum, 25℃ and pH 7.0-8.0) with 0-2% (w/v) NaCl (optimum, 0%). The 16S rRNA gene sequences of strain T808T showed the highest similarity with Pararhizobium herbae CCBAU83011T (98.8%), followed by Pararhizobium polonicum F5.1T (98.7%), Pararhizobium giardinii H152T (98.5%), Rhizobium gei ZFJT-2 T (98.4%), and Pararhizobium antarcticum NAQVI59T (97.5%). The highest digital D...
Source: Current Microbiology - December 20, 2023 Category: Microbiology Authors: Yi-Fan Zhang Yan-Na Dai Ji-Feng Pu Xiao-Feng Yang Hu-Hu Liu Hu Pan Yun Tian Source Type: research
Insights into Superinfection Immunity Regulation of Xanthomonas axonopodis Filamentous Bacteriophage cf
Curr Microbiol. 2023 Dec 19;81(1):42. doi: 10.1007/s00284-023-03539-y.ABSTRACTFilamentous bacteriophage cf infects Xanthomonas axonopodis pv. citri, a serious plant pathogen which causes citrus canker. To understand the immunity regulation of bacteria infected with bacteriophage cf, we applied DNA shuffling to mutate the cf intergenic region. One of the immunity mutants, cf-m3 (NCBI Taxonomy ID: 3050368) expressed a 106-109 fold greater superinfection ability compared with wild type cf. Nine mutations were identified on the cf-m3 phage, four of which were located within the coding region of an open reading frame (ORF165) f...
Source: Current Microbiology - December 19, 2023 Category: Microbiology Authors: Chia-Chin Yang Zih-Yun Wang Ching-Ming Cheng Source Type: research
Insights into Superinfection Immunity Regulation of Xanthomonas axonopodis Filamentous Bacteriophage cf
Curr Microbiol. 2023 Dec 19;81(1):42. doi: 10.1007/s00284-023-03539-y.ABSTRACTFilamentous bacteriophage cf infects Xanthomonas axonopodis pv. citri, a serious plant pathogen which causes citrus canker. To understand the immunity regulation of bacteria infected with bacteriophage cf, we applied DNA shuffling to mutate the cf intergenic region. One of the immunity mutants, cf-m3 (NCBI Taxonomy ID: 3050368) expressed a 106-109 fold greater superinfection ability compared with wild type cf. Nine mutations were identified on the cf-m3 phage, four of which were located within the coding region of an open reading frame (ORF165) f...
Source: Current Microbiology - December 19, 2023 Category: Microbiology Authors: Chia-Chin Yang Zih-Yun Wang Ching-Ming Cheng Source Type: research
Mechanistic Approach of Effective Combination of Antibiotics Against Clinical Bacterial Strains Having New Delhi Metallo-Beta-Lactamase Variants and Functional Gain Laboratory Mutant
This study identifies three other combinations better than fluoroquinolones effective against NDM variants and laboratory mutant.PMID:38108895 | DOI:10.1007/s00284-023-03553-0 (Source: Current Microbiology)
Source: Current Microbiology - December 18, 2023 Category: Microbiology Authors: Nabeela Farhat Sameera Mujahid Asad U Khan Source Type: research
Mechanistic Approach of Effective Combination of Antibiotics Against Clinical Bacterial Strains Having New Delhi Metallo-Beta-Lactamase Variants and Functional Gain Laboratory Mutant
This study identifies three other combinations better than fluoroquinolones effective against NDM variants and laboratory mutant.PMID:38108895 | DOI:10.1007/s00284-023-03553-0 (Source: Current Microbiology)
Source: Current Microbiology - December 18, 2023 Category: Microbiology Authors: Nabeela Farhat Sameera Mujahid Asad U Khan Source Type: research
Antimicrobial Resistance Profiles of Multidrug-Resistant Enterobacteria Isolated from Feces of Weaned Piglets
In this study, we aimed to evaluate the distribution of genes encoding resistance to tetracycline, β-lactams, and colistin in multidrug-resistant enterobacteria isolated from feces of weaned pigs. Ninety-four enterobacteria isolates were submitted to antibiotic susceptibility test by minimum inhibitory concentration (MIC). In addition, we performed conjugation experiments to verify if plasmid-bearing isolates containing the mcr-1 gene could transfer their resistance determinant to a colistin-sensitive recipient strain. Our results demonstrated a positive association between the detection of antibiotic resistance genes in ...
Source: Current Microbiology - December 16, 2023 Category: Microbiology Authors: Marlon do Valle Barroso Juliana Soares da Silva Sofia Magalh ães Moreira Yasmin Neves Vieira Sabino Gabriel Cipriano Rocha Maria Aparecida Scatamburlo Moreira Denise Mara Soares Bazzolli Hilario C Mantovani Source Type: research
Antimicrobial Resistance Profiles of Multidrug-Resistant Enterobacteria Isolated from Feces of Weaned Piglets
In this study, we aimed to evaluate the distribution of genes encoding resistance to tetracycline, β-lactams, and colistin in multidrug-resistant enterobacteria isolated from feces of weaned pigs. Ninety-four enterobacteria isolates were submitted to antibiotic susceptibility test by minimum inhibitory concentration (MIC). In addition, we performed conjugation experiments to verify if plasmid-bearing isolates containing the mcr-1 gene could transfer their resistance determinant to a colistin-sensitive recipient strain. Our results demonstrated a positive association between the detection of antibiotic resistance genes in ...
Source: Current Microbiology - December 16, 2023 Category: Microbiology Authors: Marlon do Valle Barroso Juliana Soares da Silva Sofia Magalh ães Moreira Yasmin Neves Vieira Sabino Gabriel Cipriano Rocha Maria Aparecida Scatamburlo Moreira Denise Mara Soares Bazzolli Hilario C Mantovani Source Type: research
Characterization of the Microbial Community Structures, Soil Chemical Properties, and Enzyme Activity of Stellera chamaejasme (Thymelaeaceae) and Its Associated Forages in Alpine Grassland of Northwestern China
Curr Microbiol. 2023 Dec 15;81(1):39. doi: 10.1007/s00284-023-03554-z.ABSTRACTThe invasion of toxic weeds was detrimental to the growth of original vegetation and speed up the degraded grasslands. The purpose of this study was to explore the difference in microbial community, soil physicochemical properties, and enzyme activity in the rhizosphere of Stellera chamaejasme and its associated forages (Stipa purpurea and Polygonum viviparum). The rhizosphere soil microbial communities of S. chamaejasme and its associated forages were determined by high-throughput sequencing technology, the physicochemical properties, and enzyme...
Source: Current Microbiology - December 14, 2023 Category: Microbiology Authors: Hui Jin Jinan Cheng Haoyue Liu Xiaoyan Yang Lu Dai Xiancheng Huang Zuhua Yan Deng Min Xinxin Xu Bo Qin Source Type: research
Characterization of the Microbial Community Structures, Soil Chemical Properties, and Enzyme Activity of Stellera chamaejasme (Thymelaeaceae) and Its Associated Forages in Alpine Grassland of Northwestern China
Curr Microbiol. 2023 Dec 15;81(1):39. doi: 10.1007/s00284-023-03554-z.ABSTRACTThe invasion of toxic weeds was detrimental to the growth of original vegetation and speed up the degraded grasslands. The purpose of this study was to explore the difference in microbial community, soil physicochemical properties, and enzyme activity in the rhizosphere of Stellera chamaejasme and its associated forages (Stipa purpurea and Polygonum viviparum). The rhizosphere soil microbial communities of S. chamaejasme and its associated forages were determined by high-throughput sequencing technology, the physicochemical properties, and enzyme...
Source: Current Microbiology - December 14, 2023 Category: Microbiology Authors: Hui Jin Jinan Cheng Haoyue Liu Xiaoyan Yang Lu Dai Xiancheng Huang Zuhua Yan Deng Min Xinxin Xu Bo Qin Source Type: research
