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Production and characterization of the lipopeptide with anti-adhesion for oral biofilm on the surface of titanium for dental implants. 牙科植入物钛表面抗口腔生物膜粘附性脂肽的生产和特性分析。
IF 2.3 3区 生物学
Archives of Microbiology Pub Date : 2024-07-17 DOI: 10.1007/s00203-024-04078-1
Fernanda Souza Carvalho, Vinícius Souza Tarabal, Diego Fernandes Livio, Luísa F Cruz, Ana P F Monteiro, Adriano Guimarães Parreira, Pedro P G Guimarães, Karina Scheuerman, Rafael Cesar Russo Chagas, José Antônio da Silva, Daniel Bonoto Gonçalves, José Mauro Granjeiro, Ruben Dario Sinisterra, Maria E C Segura, Paulo Afonso Granjeiro
{"title":"Production and characterization of the lipopeptide with anti-adhesion for oral biofilm on the surface of titanium for dental implants.","authors":"Fernanda Souza Carvalho, Vinícius Souza Tarabal, Diego Fernandes Livio, Luísa F Cruz, Ana P F Monteiro, Adriano Guimarães Parreira, Pedro P G Guimarães, Karina Scheuerman, Rafael Cesar Russo Chagas, José Antônio da Silva, Daniel Bonoto Gonçalves, José Mauro Granjeiro, Ruben Dario Sinisterra, Maria E C Segura, Paulo Afonso Granjeiro","doi":"10.1007/s00203-024-04078-1","DOIUrl":"10.1007/s00203-024-04078-1","url":null,"abstract":"<p><p>Titanium implants are subject to bacterial adhesion and peri-implantitis induction, and biosurfactants bring a new alternative to the fight against infections. This work aimed to produce and characterize the biosurfactant from Bacillus subtilis ATCC 19,659, its anti-adhesion and antimicrobial activity, and cell viability. Anti-adhesion studies were carried out against Streptococcus sanguinis, Staphylococcus aureus, Fusobacterium nucleatum, Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, and Proteus mirabilis as the minimum inhibitory concentration and the minimum bactericidal concentration. Cell viability was measured against osteoblast and fibroblast cells. The biosurfactant was classified as lipopeptide, with critical micelle concentration at 40 µg mL<sup>- 1</sup>, and made the titanium surface less hydrophobic. The anti-adhesion effect was observed for Staphylococcus aureus and Streptococcus sanguinis with 54% growth inhibition and presented a minimum inhibitory concentration of 15.7 µg mL<sup>- 1</sup> for Streptococcus sanguinis and Aggregatibacter actinomycetemcomitans. The lipopeptide had no cytotoxic effect and demonstrated high potential application against bacterial biofilms.</p>","PeriodicalId":8279,"journal":{"name":"Archives of Microbiology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141625775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of different carbon and nitrogen sources on liamocin production kinetics of Aureobasidium pullulans NBRC 100716 strain. 不同碳源和氮源对 Aureobasidium pullulans NBRC 100716 菌株生产利拉莫星动力学的影响。
IF 2.3 3区 生物学
Archives of Microbiology Pub Date : 2024-07-16 DOI: 10.1007/s00203-024-04065-6
Aslı Deniz Pehlivan, M Tijen Bozdemir, Z Yesim Ozbas
{"title":"Effects of different carbon and nitrogen sources on liamocin production kinetics of Aureobasidium pullulans NBRC 100716 strain.","authors":"Aslı Deniz Pehlivan, M Tijen Bozdemir, Z Yesim Ozbas","doi":"10.1007/s00203-024-04065-6","DOIUrl":"10.1007/s00203-024-04065-6","url":null,"abstract":"<p><p>Liamocins are molecules with a polyol lipid structure produced by rare strains of Aureobasidium pullulans. In recent years, liamocins have attracted attention due to their antibacterial, anticancer and surface-active properties, and promising potential applications have been identified in the food, agriculture, medical and pharmaceutical industries. This study is the first to investigate the effects of different carbon and nitrogen sources on the growth and liamocin production kinetics of A. pullulans NBRC 100716 strain. This strain was selected among six different A. pullulans strains whose liamocin productions were tested by us for the first time. In fermentations carried out in shaking water baths, the carbon source that most supported the liamocin production of this strain was fructose, and the nitrogen source was peptone-yeast extract combination. In the medium containing fructose and the peptone-yeast extract mixture, A. pullulans NBRC 100716 produced 4.26 g liamocin L<sup>-1</sup>. The specific liamocin production rate (qp) of the strain in this medium was 0.0090 g liamocin/g mo.h. This study is also the first to produce liamocin with a fructophilic A. pullulans strain. Present findings in this research also demonstrated the excellent biosurfactant capacity of the liamocin produced by this strain. The obtained liamocin reduced the water surface tension to a degree that can compete with synthetic surfactants. Furthermore, this is the first report to reveal that the fatty acid profile of liamocin obtained from A. pullulans NBRC 100716 contains an appreciable amount of unsaturated fatty acids and is similar to the composition of vegetable oil.</p>","PeriodicalId":8279,"journal":{"name":"Archives of Microbiology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141625773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Immunogenic profiling of Mycobacterium tuberculosis Rv1513 reveals its ability to switch on Th1 based immunity. 结核分枝杆菌 Rv1513 的免疫原性分析揭示了其开启 Th1 型免疫的能力。
IF 2.3 3区 生物学
Archives of Microbiology Pub Date : 2024-07-16 DOI: 10.1007/s00203-024-04033-0
Zilun Shi, Lili Zhou, Xiaochun Wang, Zian Zhang, LingYun Kong, Yanpeng Zhang
{"title":"Immunogenic profiling of Mycobacterium tuberculosis Rv1513 reveals its ability to switch on Th1 based immunity.","authors":"Zilun Shi, Lili Zhou, Xiaochun Wang, Zian Zhang, LingYun Kong, Yanpeng Zhang","doi":"10.1007/s00203-024-04033-0","DOIUrl":"10.1007/s00203-024-04033-0","url":null,"abstract":"<p><p>Tuberculosis (TB) is one of the infectious diseases caused by the pathogen Mycobacterium tuberculosis that continuously threatens the global human health. Bacillus Calmette-Guérin (BCG) vaccine is the only vaccine that has been used clinically to prevent tuberculosis in recent centuries, but its limitations in preventing latent infection and reactivation of tuberculosis do not provide full protection. In this study, we selected the membrane-associated antigen Rv1513 of Mycobacterium. In order to achieve stable expression and function of the target gene, the prokaryotic expression recombinant vector pET30b-Rv1513 was constructed and expressed and purified its protein. Detection of IFN- γ levels in the peripheral blood of TB patients stimulated by whole blood interferon release assay (WBIA) and multi-microsphere flow immunofluorescence luminescence (MFCIA) revealed that the induced production of cytokines, such as IFN-γ and IL-6, was significantly higher than that in the healthy group. Rv1513 combined with adjuvant DMT (adjuvant system liposomes containing dimethyldioctadecylammonium bromide (DDA), monophospholipid A (MPL), and trehalose-660-dibenzoic acid (TDB)) was used to detect serum specific antibodies, cytokine secretion from splenic suprasplenic cell supernatants, and multifunctional T-cell levels in splenocytes in immunised mice. The levels of IFN-γ, TNF-α, and IL-2 secreted by mouse splenocytes were found in the Rv1513+DMT group and the BCG+Rv1513+DMT group. The serum levels of IgG and its subclasses and the number of IFN-γ+T cells, TNF-α+T and IFN-γ+TNF-α+T cells in the induced CD4+/CD8+T cells in mice were significantly higher than those in the BCG group, and the highest levels were found in the BCG+Rv1513+DMT group. These findings suggest that Rv1513/DMT may serve as a potential subunit vaccine candidate that may be effective as a booster vaccine after the first BCG vaccination.</p>","PeriodicalId":8279,"journal":{"name":"Archives of Microbiology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141619202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Transcriptome analysis of the degradation process of organic nitrogen by two heterotrophic nitrifying and aerobic denitrifying bacteria. 两种异养硝化细菌和好氧反硝化细菌降解有机氮过程的转录组分析。
IF 2.3 3区 生物学
Archives of Microbiology Pub Date : 2024-07-15 DOI: 10.1007/s00203-024-04076-3
Yijun Huang, Xiaoting Liu, Yue Jin, Qichun Zhang
{"title":"Transcriptome analysis of the degradation process of organic nitrogen by two heterotrophic nitrifying and aerobic denitrifying bacteria.","authors":"Yijun Huang, Xiaoting Liu, Yue Jin, Qichun Zhang","doi":"10.1007/s00203-024-04076-3","DOIUrl":"10.1007/s00203-024-04076-3","url":null,"abstract":"<p><p>The heterotrophic nitrification aerobic denitrification bacteria (HNDS) can perform nitrification and denitrification at the same time. Two HNDS strains, Achromobacter sp. HNDS-1 and Enterobacter sp. HNDS-6 which exhibited an amazing ability to solution nitrogen (N) removal have been successfully isolated from paddy soil in our lab. When peptone or ammonium sulfate as sole N source, no significant difference in gene expression related to nitrification and denitrification of the strains was found according to the transcriptome analysis. The expression of phosphomethylpyrimidine synthase (thiC), ABC transporter substrate-binding protein, branched-chain amino acid ABC transporter substrate-binding protein, and RNA polymerase (rpoE) in HNDS-1 were significantly upregulated when used peptone as N source, while the expression of exopolysaccharide production protein (yjbE), RNA polymerase (rpoC), glutamate synthase (gltD) and ABC-type branched-chain amino acid transport systems in HNDS-6 were significantly upregulated. This indicated that these two strains are capable of using organic N and converting it into NH<sub>4</sub><sup>+</sup>-N, then utilizing NH<sub>4</sub><sup>+</sup>-N to synthesize amino acids and proteins for their own growth, and strain HNDS-6 can also remove NH<sub>4</sub><sup>+</sup>-N through nitrification and denitrification.</p>","PeriodicalId":8279,"journal":{"name":"Archives of Microbiology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141615835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
KKL-35 inhibits growth of Staphylococcus aureus by systematically changing bacterial phenotypes. KKL-35 通过系统地改变细菌表型来抑制金黄色葡萄球菌的生长。
IF 2.3 3区 生物学
Archives of Microbiology Pub Date : 2024-07-12 DOI: 10.1007/s00203-024-04079-0
Jie Xu, Zilan Wei, Wendong Fang, Jiahui Wu, Youliang Wang, Shuiping Chen
{"title":"KKL-35 inhibits growth of Staphylococcus aureus by systematically changing bacterial phenotypes.","authors":"Jie Xu, Zilan Wei, Wendong Fang, Jiahui Wu, Youliang Wang, Shuiping Chen","doi":"10.1007/s00203-024-04079-0","DOIUrl":"10.1007/s00203-024-04079-0","url":null,"abstract":"<p><p>KKL-35 is a new oxadiazole compound with potent broad-spectrum antibacterial activity against a number of gram-positive and gram-negative bacteria. However, its influences on bacterial growth are unclear. This study is to investigate phenotypic changes of Staphylococcus aureus (SA) caused by KKL-35 and evaluate antibacterial activity of combinations of KKL-35 with 7 class of antibiotics available in medical facilities. KKL-35-treated SA showed significantly lower survival under stresses of NaCl and H<sub>2</sub>O<sub>2</sub> than DMSO (21.03 ± 2.60% vs. 68.21 ± 5.31% for NaCl, 4.91 ± 3.14% vs. 74.78 ± 2.88% for H<sub>2</sub>O<sub>2</sub>). UV exposure significantly decreased survival of SA treated with KKL-35 than DMSO-treated ones (23.91 ± 0.71% vs. 55.45 ± 4.70% for 4.2 J/m<sup>2</sup>, 12.80 ± 1.03% vs. 31.99 ± 5.99% for 7.0 J/m<sup>2</sup>, 1.52 ± 0.63% vs. 6.49 ± 0.51% for 14.0 J/m<sup>2</sup>). KKL-35 significantly decreased biofilm formation (0.47 ± 0.12 vs. 1.45 ± 0.21) and bacterial survival in the serum resistance assay (42.27 ± 2.77% vs. 78.31 ± 5.64%) than DMSO. KKL-35 significantly decreased ethidium bromide uptake and efflux, as well as the cell membrane integrity. KKL-35 had low cytotoxicity and low propensity for resistance. KKL-35 inhibited SA growth in concentration-independent and time-dependent manners, and showed additivity when combined with the majority class of available antibiotics. Antibiotic combinations of KKL-35 with ciprofloxacin, rifampicin, or linezolid significantly decreased bacterial loads than the most active antibiotic in the corresponding combination. Thus, KKL-35 inhibits growth of SA by decreasing bacterial environmental adaptations, biofilm formation, membrane uptake and efflux, as well as increasing antibiotic sensitivity. Its potent antibacterial activity, low cytotoxicity, low propensity for resistance, and wide choices in antibiotic combinations make KKL-35 a promising leading compound to design new antibiotics in monotherapies and combination therapies to treat bacterial infections.</p>","PeriodicalId":8279,"journal":{"name":"Archives of Microbiology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141589445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Suppressing the virulence factors of Candida auris with baicalein through multifaceted mechanisms. 黄芩苷通过多重机制抑制白色念珠菌的毒力因子
IF 2.3 3区 生物学
Archives of Microbiology Pub Date : 2024-07-11 DOI: 10.1007/s00203-024-04038-9
Can Li, Jun Wang, Hao Li, Yemei Wang, Hui Wu, Wenfan Wei, Daqiang Wu, Jing Shao, Tianming Wang, Changzhong Wang
{"title":"Suppressing the virulence factors of Candida auris with baicalein through multifaceted mechanisms.","authors":"Can Li, Jun Wang, Hao Li, Yemei Wang, Hui Wu, Wenfan Wei, Daqiang Wu, Jing Shao, Tianming Wang, Changzhong Wang","doi":"10.1007/s00203-024-04038-9","DOIUrl":"10.1007/s00203-024-04038-9","url":null,"abstract":"<p><p>Candida auris, a rapidly spreading multi-drug-resistant fungus, is causing lethal infections under certain conditions globally. Baicalin (BE), an active ingredient extracted from the dried root of Scutellaria baicalensis Georgi, exhibits antifungal activity. However, studies have shown the distinctive advantages of Traditional Chinese medicine in combating fungal infections, while the effect of BE, an active ingredient extracted from the dried roots of Scutellaria baicalensis Georgi, on C. auris, remains unknown. Therefore, this study aims to evaluate the potential of BE as an antifungal agent against the emerging multidrug-resistant C. auris. Various assays and models, including microbroth dilution, time growth curve analysis, spot assays, adhesion tests, flocculation test, cell surface hydrophobicity assay, hydrolase activity assays, XTT assay, violet crystal assay, scanning electron microscope (SEM), confocal laser scanning microscope (CLSM), flow cytometry, Live/dead fluorescent staining, reactive oxygen species (ROS), cell wall assay, aggregation assay, porcine skin model, Galleria mellonella larvae (G. mellonella larvae) infection model, and reverse transcription-quantitative polymerase chain reaction (RT-PCR) were utilized to investigate how baicalein suppresses C. auris through possible multifaceted mechanisms. The findings indicate that BE strongly inhibited C. auris growth, adhesion, and biofilm formation. It also effectively reduced drug resistance and aggregation by disrupting the cell membrane and cell wall while reducing colonization and invasion of the host. Transcriptome analysis showed significant modulation in gene expression related to different virulence factors post-BE treatment. In conclusion, BE exhibits significant effectiveness against C. auris, suggesting its potential as a viable treatment option due to its multifaceted suppression mechanisms.</p>","PeriodicalId":8279,"journal":{"name":"Archives of Microbiology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141589446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biodegradation of the cyanobacterial toxin anatoxin-a by a Bacillus subtilis strain isolated from a eutrophic lake in Saudi Arabia. 从沙特阿拉伯富营养化湖泊中分离出的枯草芽孢杆菌菌株对蓝藻毒素锐毒毒素-a的生物降解。
IF 2.3 3区 生物学
Archives of Microbiology Pub Date : 2024-07-11 DOI: 10.1007/s00203-024-04074-5
Zakaria A Mohamed, Rehab O Elnour, Saad Alamri, Mohamed Hashem
{"title":"Biodegradation of the cyanobacterial toxin anatoxin-a by a Bacillus subtilis strain isolated from a eutrophic lake in Saudi Arabia.","authors":"Zakaria A Mohamed, Rehab O Elnour, Saad Alamri, Mohamed Hashem","doi":"10.1007/s00203-024-04074-5","DOIUrl":"10.1007/s00203-024-04074-5","url":null,"abstract":"<p><p>Anatoxin-a (ATX-a) is a neurotoxin produced by some species of cyanobacteria. Due to its water solubility and stability in natural water, it could pose health risks to human, animals, and plants. Conventional water treatment techniques are not only insufficient for the removal of ATX-a, but they also result in cell lysis and toxin release. The elimination of this toxin through biodegradation may be a promising strategy. This study examines for the first time the biodegradation of ATX-a to a non-toxic metabolite (Epoxy-ATX-a) by a strain of Bacillus that has a history of dealing with toxic cyanobacteria in a eutrophic lake. The Bacillus strain AMRI-03 thrived without lag phase in a lake water containing ATX-a. The strain displayed fast degradation of ATX-a, depending on initial toxin concentration. At the highest initial concentrations (50 & 100 µg L<sup>- 1</sup>), total ATX-a degradation took place in 4 days, but it took 6 & 7 days at lower concentrations (20, 10, and 1 µg L<sup>- 1</sup>, respectively). The ATX-a biodegradation rate was also influenced by the initial toxin concentration, reaching its maximum value (12.5 µg L<sup>- 1</sup> day<sup>- 1</sup>) at the highest initial toxin concentrations (50 & 100 µg L<sup>- 1</sup>). Temperature and pH also had an impact on the rate of ATX-a biodegradation, with the highest rates occurring at 25 and 30 ºC and pH 7 and 8. This nontoxic bacterial strain could be immobilized within a biofilm on sand filters and/or sludge for the degradation and removal of ATX-a and other cyanotoxins during water treatment processes, following the establishment of mesocosm experiments to assess the potential effects of this bacterium on water quality.</p>","PeriodicalId":8279,"journal":{"name":"Archives of Microbiology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141578819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unveiling the mechanism of essential oil action against skin pathogens: from ancient wisdom to modern science. 揭示精油对抗皮肤病原体的作用机制:从古代智慧到现代科学。
IF 2.3 3区 生物学
Archives of Microbiology Pub Date : 2024-07-10 DOI: 10.1007/s00203-024-03986-6
Md Waquar Imam, Suaib Luqman
{"title":"Unveiling the mechanism of essential oil action against skin pathogens: from ancient wisdom to modern science.","authors":"Md Waquar Imam, Suaib Luqman","doi":"10.1007/s00203-024-03986-6","DOIUrl":"10.1007/s00203-024-03986-6","url":null,"abstract":"<p><p>Essential oils are among the most well-known phyto-compounds, and since ancient times, they have been utilized in medicine. Over 100 essential oils have been identified and utilized as therapies for various skin infections and related ailments. While numerous commercial medicines are available in different dosage forms to treat skin diseases, the persisting issues include their side effects, toxicity, and low efficacy. As a result, researchers are seeking novel classes of compounds as substitutes for synthetic drugs, aiming for minimal side effects, no toxicity, and high efficacy. Essential oils have shown promising antimicrobial activity against skin-associated pathogens. This review presents essential knowledge and scientific information regarding essential oil's antimicrobial capabilities against microorganisms that cause skin infections. Essential oils mechanisms against different pathogens have also been explored. Many essential oils exhibit promising activity against various microbes, which has been qualitatively assessed using the agar disc diffusion experiment, followed by determining the minimum inhibitory concentration for quantitative evaluation. It has been observed that Staphylococcus aureus and Candida albicans have been extensively researched in the context of skin-related infections and their antimicrobial activity, including established modes of action. In contrast, other skin pathogens such as Staphylococcus epidermidis, Streptococcus pyogens, Propionibacterium acnes, and Malassezia furfur have received less attention or neglected. This review report provides an updated understanding of the mechanisms of action of various essential oils with antimicrobial properties. This review explores the anti-infectious activity and mode of action of essential against distinct skin pathogens. Such knowledge can be valuable in treating skin infections and related ailments.</p>","PeriodicalId":8279,"journal":{"name":"Archives of Microbiology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gut virome and diabetes: discovering links, exploring therapies. 肠道病毒组与糖尿病:发现联系,探索疗法。
IF 2.3 3区 生物学
Archives of Microbiology Pub Date : 2024-07-08 DOI: 10.1007/s00203-024-04068-3
Lihua Fang, Jie Ning
{"title":"Gut virome and diabetes: discovering links, exploring therapies.","authors":"Lihua Fang, Jie Ning","doi":"10.1007/s00203-024-04068-3","DOIUrl":"10.1007/s00203-024-04068-3","url":null,"abstract":"<p><p>This review offers a comprehensive analysis of the intricate relationship between the gut virome and diabetes, elucidating the mechanisms by which the virome engages with both human cells and the intestinal bacteriome. By examining a decade of scientific literature, we provide a detailed account of the distinct viral variations observed in type 1 diabetes (T1D) and type 2 diabetes (T2D). Our synthesis reveals that the gut virome significantly influences the development of both diabetes types through its interactions, which indirectly modulate immune and inflammatory responses. In T1D, the focus is on eukaryotic viruses that stimulate the host's immune system, whereas T2D is characterized by a broader spectrum of altered phage diversities. Promisingly, in vitro and animal studies suggest fecal virome transplantation as a potential therapeutic strategy to alleviate symptoms of T2D and obesity. This study pioneers a holistic overview of the gut virome's role in T1D and T2D, its interplay with host immunity, and the innovative potential of fecal transplantation therapy in clinical diabetes management.</p>","PeriodicalId":8279,"journal":{"name":"Archives of Microbiology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141554101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neuropathogenesis of SARS-CoV-2 in human neuronal, microglial and glial cells. SARS-CoV-2 在人类神经元、小胶质细胞和神经胶质细胞中的神经发病机制。
IF 2.3 3区 生物学
Archives of Microbiology Pub Date : 2024-07-08 DOI: 10.1007/s00203-024-04075-4
Narendra Kumar, Rashmi Santhoshkumar, Ragini Agrawal, Amit Singh, Vijayalakshmi Kalyan, Anita Desai, Vasanthapuram Ravi, Manjunatha M Venkataswamy
{"title":"Neuropathogenesis of SARS-CoV-2 in human neuronal, microglial and glial cells.","authors":"Narendra Kumar, Rashmi Santhoshkumar, Ragini Agrawal, Amit Singh, Vijayalakshmi Kalyan, Anita Desai, Vasanthapuram Ravi, Manjunatha M Venkataswamy","doi":"10.1007/s00203-024-04075-4","DOIUrl":"10.1007/s00203-024-04075-4","url":null,"abstract":"<p><p>Neurological complications, both acute and chronic, are reported commonly in COVID-19 affected individuals. In this context, the understanding of pathogenesis of SARS-CoV-2 in specific cells of central nervous system (CNS) origin is relevant. The present study explores infection biology of a clinical isolate of SARS-CoV-2 in human cell lines of neural origin such as the glioblastoma (U87-MG), neuroblastoma (SHSY5Y) and microglia (C20). Despite showing clear evidence of infection by immunofluorescence with an anti-spike protein antibody, all the three neural cell lines were observed to be highly restrictive to the replication of the infecting virus. While the U87-MG glioblastoma cells demonstrated no cytopathic effects and a low viral titre with no signs of replication, the SHSY5Y neuroblastoma cells exhibited cytopathic effects with bleb formation but no evidence of viable virus. The C20 microglial cells showed neither signs of cytopathic effects nor viable virus. Ultrastructural studies demonstrated intracellular virions in infected neural cells. The presence of lipid droplets in infected SHSY5Y cells suggested an impact on host cell metabolism. The decrease in viral RNA levels over time in all the neural cell lines suggested restricted viral replication. In conclusion, this study highlights the limited susceptibility of neural cells to SARS-CoV-2 infection. This reduced permissibility of neural cell lines to SARS-CoV-2 may point to their inherent lower expression of receptors that support viral entry in addition to the intracellular factors that potently inhibit viral replication. The study findings prompt further investigation into the mechanisms of SARS-CoV-2 infection of neural cells.</p>","PeriodicalId":8279,"journal":{"name":"Archives of Microbiology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141554102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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