Proteus appendicitidis sp. nov., isolated from the appendiceal pus of an appendicitis patient in Yongzhou, China
Arch Microbiol. 2024 Mar 15;206(4):171. doi: 10.1007/s00203-024-03887-8.ABSTRACTA Gram-negative, facultatively anaerobic, short rod-shaped bacterium, designated as strain HZ0627T, was isolated from the appendiceal pus of a patient with appendicitis in Yongzhou, Hunan, China. This strain was subjected to comprehensive phenotypic, phylogenetic, and genomic analyses using polyphasic taxonomic methods. Phylogenetic analysis of the 16S rRNA gene sequence revealed that this strain belonged to the genus Proteus and the family Morganellaceae, whereas that based on the rpoB gene sequence and phylogenomic analysis demonstrated that ...
Source: Archives of Microbiology - March 16, 2024 Category: Microbiology Authors: Jing He Zhiyun Zhang Haibo Qu Gongqin Chen Junfeng Zhou Wangxi Zhou Yao Peng Xunchao Cai Source Type: research
Foliar phenols and flavonoids level in pteridophytes: an insight to culturable fungal endophyte colonisation
Arch Microbiol. 2024 Mar 15;206(4):170. doi: 10.1007/s00203-024-03880-1.ABSTRACTThere are many available reports of secondary metabolites as bioactive molecules from culturable endophytes, nevertheless, there are scarce research pertaining to the levels of metabolites in plants with respect to the incidence and colonisation of fungal endophytes in the same foliar tissues. Therefore, the study was focussed to examine whether fungal endophyte colonisation and the accumulation of secondary metabolites, such as flavonoids and phenols, in the plants are related in any way. For this reason, the study aims to analyse phenols and ...
Source: Archives of Microbiology - March 16, 2024 Category: Microbiology Authors: Royee Singha Dipashree Sharma Ajay Krishna Saha Panna Das Source Type: research
The usefulness of the MALDI-TOF MS technique in the determination of dairy samples' microbial composition: comparison of the new EXS 2600 system with MALDI Biotyper platform
This study compared the EXS 2600 system with the MALDI Biotyper for identifying microorganisms in dairy samples. Of the 196 bacterial isolates from milk, whey, buttermilk, cream, and dairy wastewater, the species and genus consistent identification between two systems showed 74% and 99%, respectively. However, the level of species identification rate exhibited a difference, which was higher in Zybio than in Bruker-76.0% and 66.8%, respectively. Notably, the EXS 2600 system performed better with certain yeast species and H. alvei, while the Biotyper excelled with Pseudomonas bacteria. Unique microbial compositions were foun...
Source: Archives of Microbiology - March 16, 2024 Category: Microbiology Authors: Gra żyna Czeszewska-Rosiak Micha ł Złoch Monika Radosi ńska Aleksandra Bogumi ła Florkiewicz Andrzej Tretyn Pawe ł Pomastowski Source Type: research
Metabolic and physiological adaptations of microalgal growth-promoting bacterium Azospirillum brasilense growing under biogas atmosphere: a microarray-based transcriptome analysis
Arch Microbiol. 2024 Mar 16;206(4):173. doi: 10.1007/s00203-024-03890-z.ABSTRACTUsing microalgal growth-promoting bacteria (MGPB) to improve the cultured microalga metabolism during biotechnological processes is one of the most promising strategies to enhance their benefits. Nonetheless, the culture condition effect used during the biotechnological process on MGPB growth and metabolism is key to ensure the expected positive bacterium growth and metabolism of microalgae. In this sense, the present research study investigated the effect of the synthetic biogas atmosphere (75% CH4-25% CO2) on metabolic and physiological adapt...
Source: Archives of Microbiology - March 16, 2024 Category: Microbiology Authors: Carolina Garciglia-Mercado Claudia A Contreras Francisco J Choix Luz E de-Bashan Gracia A G ómez-Anduro Oskar A Palacios Source Type: research
Quantitative intra- and intergeneric taxonomic relationships among Micrococcaceae strains reveal contradictions in the historical assignments of the strains and indicate the need for species reclassification
This article reports the results of quantitative intra- and intergeneric taxonomic relationships among Micrococcaceae strains and a novel endophytic bacterium (SG) isolated from a suspension culture of Arabidopsis thaliana (L.) Heynh in our laboratory. The known strain Rothia sp. ND6WE1A was used as a reference one for SG. Whole-genome sequencing and phylogenetic analysis were based on the 16S rRNA test. Quantitative analysis for the nucleotide identity (ANI) and calculation of evolutionary distances were based on the identified amino acids (AAI) test indicating the generic assignment of the reference strain within and bet...
Source: Archives of Microbiology - March 15, 2024 Category: Microbiology Authors: Sergei Yu Shchyogolev Lev A Dykman Alexander O Sokolov Oleg I Sokolov Larisa Yu Matora Source Type: research
Immunosuppressive effects of the mycotoxin patulin in macrophages
Arch Microbiol. 2024 Mar 15;206(4):166. doi: 10.1007/s00203-024-03928-2.ABSTRACTPatulin (PAT) is a fungi-derived secondary metabolite produced by numerous fungal species, especially within Aspergillus, Byssochlamys, and Penicillium genera, amongst which P. expansum is the foremost producer. Similar to other fungi-derived metabolites, PAT has been shown to have diverse biological features. Initially, PAT was used as an effective antimicrobial agent against Gram-negative and Gram-positive bacteria. Then, PAT has been shown to possess immunosuppressive properties encompassing humoral and cellular immune response, immune cell ...
Source: Archives of Microbiology - March 15, 2024 Category: Microbiology Authors: Jos é Marreiro de Sales-Neto Sandra Rodrigues-Mascarenhas Source Type: research
Role of Helicobacter pylori virulence factors and alteration of the Tumor Immune Microenvironment: challenges and opportunities for Cancer Immunotherapy
Arch Microbiol. 2024 Mar 15;206(4):167. doi: 10.1007/s00203-024-03908-6.ABSTRACTVarious forms of malignancies have been linked to Helicobacter pylori. Despite advancements in chemotherapeutic and surgical approaches, the management of cancer, particularly at advanced stages, increasingly relies on the integration of immunotherapy. As a novel, safe therapeutic modality, immunotherapy harnesses the immune system of the patient to treat cancer, thereby broadening treatment options. However, there is evidence that H. pylori infection may influence the effectiveness of immunotherapy in various types of cancer. This association ...
Source: Archives of Microbiology - March 15, 2024 Category: Microbiology Authors: Junyi Zhou Minna Zhang HongGang Wang Xiaomin Zhong XiaoZhong Yang Source Type: research
Sub-inhibitory concentrations of colistin and imipenem impact the expression of biofilm-associated genes in Acinetobacter baumannii
This study highlights the potential consequences of overuse and misuse of antibiotics, which can help bacteria become resistant to these drugs.PMID:38489041 | DOI:10.1007/s00203-024-03869-w (Source: Archives of Microbiology)
Source: Archives of Microbiology - March 15, 2024 Category: Microbiology Authors: J N Bhavya Sureddi Sai Anugna Ramya Premanath Source Type: research
Streptococcus taonis sp. nov., a novel bacterial species isolated from a blood culture of a patient
Arch Microbiol. 2024 Mar 15;206(4):168. doi: 10.1007/s00203-024-03884-x.ABSTRACTOne Gram stain-positive, catalase-negative, α-hemolytic, chain-forming or paired cocci, designated ST22-14T, was isolated from a blood culture of a child with suspected infection. The results of 16S rRNA gene sequences analyses showed that the most closely related species to strain ST22-14T were "Streptococcus vulneris" DM3B3T (99.2%), Streptococcus mitis NCTC 12261T (99.0%), "Streptococcus gwangjuense" ChDC B345T, (99.0%), Streptococcus oralis subsp. dentisani 7747T (99.0%), Streptococcus downii CECT 9732T (99.0%), and Streptococcus infantis ...
Source: Archives of Microbiology - March 15, 2024 Category: Microbiology Authors: Chien-Yu Lee Chin-Kan Chan Momoko Chida Mika Miyashita Yun-Shien Lee Hui-Chung Wu Yu-Chung Chang Wen-Ting Lin Yi-Sheng Chen Source Type: research
Quantitative intra- and intergeneric taxonomic relationships among Micrococcaceae strains reveal contradictions in the historical assignments of the strains and indicate the need for species reclassification
This article reports the results of quantitative intra- and intergeneric taxonomic relationships among Micrococcaceae strains and a novel endophytic bacterium (SG) isolated from a suspension culture of Arabidopsis thaliana (L.) Heynh in our laboratory. The known strain Rothia sp. ND6WE1A was used as a reference one for SG. Whole-genome sequencing and phylogenetic analysis were based on the 16S rRNA test. Quantitative analysis for the nucleotide identity (ANI) and calculation of evolutionary distances were based on the identified amino acids (AAI) test indicating the generic assignment of the reference strain within and bet...
Source: Archives of Microbiology - March 15, 2024 Category: Microbiology Authors: Sergei Yu Shchyogolev Lev A Dykman Alexander O Sokolov Oleg I Sokolov Larisa Yu Matora Source Type: research
Immunosuppressive effects of the mycotoxin patulin in macrophages
Arch Microbiol. 2024 Mar 15;206(4):166. doi: 10.1007/s00203-024-03928-2.ABSTRACTPatulin (PAT) is a fungi-derived secondary metabolite produced by numerous fungal species, especially within Aspergillus, Byssochlamys, and Penicillium genera, amongst which P. expansum is the foremost producer. Similar to other fungi-derived metabolites, PAT has been shown to have diverse biological features. Initially, PAT was used as an effective antimicrobial agent against Gram-negative and Gram-positive bacteria. Then, PAT has been shown to possess immunosuppressive properties encompassing humoral and cellular immune response, immune cell ...
Source: Archives of Microbiology - March 15, 2024 Category: Microbiology Authors: Jos é Marreiro de Sales-Neto Sandra Rodrigues-Mascarenhas Source Type: research
Role of Helicobacter pylori virulence factors and alteration of the Tumor Immune Microenvironment: challenges and opportunities for Cancer Immunotherapy
Arch Microbiol. 2024 Mar 15;206(4):167. doi: 10.1007/s00203-024-03908-6.ABSTRACTVarious forms of malignancies have been linked to Helicobacter pylori. Despite advancements in chemotherapeutic and surgical approaches, the management of cancer, particularly at advanced stages, increasingly relies on the integration of immunotherapy. As a novel, safe therapeutic modality, immunotherapy harnesses the immune system of the patient to treat cancer, thereby broadening treatment options. However, there is evidence that H. pylori infection may influence the effectiveness of immunotherapy in various types of cancer. This association ...
Source: Archives of Microbiology - March 15, 2024 Category: Microbiology Authors: Junyi Zhou Minna Zhang HongGang Wang Xiaomin Zhong XiaoZhong Yang Source Type: research
Sub-inhibitory concentrations of colistin and imipenem impact the expression of biofilm-associated genes in Acinetobacter baumannii
This study highlights the potential consequences of overuse and misuse of antibiotics, which can help bacteria become resistant to these drugs.PMID:38489041 | DOI:10.1007/s00203-024-03869-w (Source: Archives of Microbiology)
Source: Archives of Microbiology - March 15, 2024 Category: Microbiology Authors: J N Bhavya Sureddi Sai Anugna Ramya Premanath Source Type: research
Streptococcus taonis sp. nov., a novel bacterial species isolated from a blood culture of a patient
Arch Microbiol. 2024 Mar 15;206(4):168. doi: 10.1007/s00203-024-03884-x.ABSTRACTOne Gram stain-positive, catalase-negative, α-hemolytic, chain-forming or paired cocci, designated ST22-14T, was isolated from a blood culture of a child with suspected infection. The results of 16S rRNA gene sequences analyses showed that the most closely related species to strain ST22-14T were "Streptococcus vulneris" DM3B3T (99.2%), Streptococcus mitis NCTC 12261T (99.0%), "Streptococcus gwangjuense" ChDC B345T, (99.0%), Streptococcus oralis subsp. dentisani 7747T (99.0%), Streptococcus downii CECT 9732T (99.0%), and Streptococcus infantis ...
Source: Archives of Microbiology - March 15, 2024 Category: Microbiology Authors: Chien-Yu Lee Chin-Kan Chan Momoko Chida Mika Miyashita Yun-Shien Lee Hui-Chung Wu Yu-Chung Chang Wen-Ting Lin Yi-Sheng Chen Source Type: research
Quantum dots: a next generation approach for pathogenic microbial biofilm inhibition; mechanistic insights, existing challenges, and future potential
Arch Microbiol. 2024 Mar 13;206(4):158. doi: 10.1007/s00203-024-03919-3.ABSTRACTQuantum Dots (QDs) have emerged as versatile nanomaterials with origins spanning organic, inorganic, and natural sources, revolutionizing various biomedical applications, particularly in combating pathogenic biofilm formation. Biofilms, complex structures formed by microbial communities enveloped in exopolysaccharide matrices, pose formidable challenges to traditional antibiotics due to their high tolerance and resistance, exacerbating inefficacy issues in antibiotic treatments. QDs offer a promising solution, employing physical mechanisms like...
Source: Archives of Microbiology - March 14, 2024 Category: Microbiology Authors: Khyati Koul Ishwerpreet Kaur Jawanda Thomson Soni Pranjali Singh Divyani Sharma Seema Kumari Source Type: research
