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  • Kruse posted an update 7 months, 2 weeks ago

    Mycelial extract presented some major compounds such as ethyl linoleate, oleic acid, n-hexadecanoic acid and ethyl palmitate that are reported to exhibit anti-inflammatory activity. Thus, our study highlights the significance of Aspergillus arcoverdensis as an effective producer of antioxidant and anti-inflammatory compounds for future utility in pharmaceutical and cosmeceutical applications.The aim of this study was to identify the immunodominant outer membrane proteins (OMPs) of Fusobacterium necrophorum from sheep affected with severe foot-rot. The OMP profile of ovine strains of F. necrophorum has not been well studied. We analyzed the OMP profile of the most frequent lktA variant JKS-F3 of F. necrophorum associated with severe ovine foot-rot with lesion score 4 in order to identify its major immunodominant OMPs. Electrophoretic separations of extracted OMPs showed a number of spots in two-dimensional electrophoretic gels. Two immunoreactive proteins of size around 43 kDa were identified through western blotting using hyperimmune sera raised in rabbits. These two immunogenic OMPs were analyzed by Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-ToF/MS) which revealed that these two OMPs of lktA variant JKS-F3 of F. necrophorum showed 46 and 42 percent protein sequence coverage and scores of 125 and 114, respectively, with the reported 43 kDa outer membrane protein of F. necrophorum strain H05, a putative porin having properties similar to pore-forming proteins of anaerobic Gram-negative bacteria. These identified immunogenic OMPs will contribute to our understanding of the pathogenic role played by this organism in ovine foot-rot and could be exploited to devise an effective control strategy through development of an OMP-based recombinant vaccine to mitigate foot-rot in sheep and goats.A novel coronavirus member was reported in Wuhan City, Hubei Province, China, at the end of the year 2019. Initially, the infection spread locally, affecting the Wuhan people, and then expanded rapidly throughout the world. On 11 March 2020, the World Health Organization (WHO) proclaimed it a global pandemic. The virus is a new strain most closely related to a bat coronavirus (RaTG13) which was not previously discovered in humans and is now formally known as the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Coronavirus disease 2019 (COVID-19) is the disease syndrome that the SARS-CoV-2 virus triggers. It is suggested that SARS-CoV-2 can be transmitted through aerosols, direct/indirect contact, and also during medical procedures and specimen handling. The infection is characterized by isolated flu-like symptoms, but there may be specific signs of fever, fatigue, cough, and shortness of breath, as well as the loss of smell and breathing difficulty. Within this report, we tried to review the most current scientific literature published by January 2021 on various aspects of the outbreak, including virus structure, pathogenesis, clinical presentation, epidemiology, diagnostic approaches, potential therapeutics and vaccines, and prospects. We hope this article makes a beneficial impact on public education to better deal with the SARS-CoV-2 crisis and push a step forward in the near term towards its prevention and control.Arsenic (As) contamination of groundwater aquifers is a global environmental problem, especially in South and Southeast Asian regions, and poses a risk to human health. Arsenite-oxidizing bacteria that transform As(III) to less toxic As(V) can be potentially used as a groundwater As remediation strategy. This study aimed to examine the community and abundance of arsenite-oxidizing bacteria in groundwater with various As concentrations from Rayong Province, Thailand using PCR-cloning-sequencing and quantitative PCR (qPCR) of catalytic subunit of arsenite oxidase gene (aioA). Key factors influencing their community and abundance were also identified. The results demonstrated that arsenite-oxidizing bacteria retrieved from groundwater were phylogenetically related to Betaproteobacteria and Alphaproteobacteria. The aioA gene abundances ranged from 8.6 × 101 to 1.1 × 104 copies per ng of genomic DNA, accounting for 0.16-1.37% of the total 16S rRNA bacterial gene copies. Although the abundance of arsenite-oxidizing bacteria in groundwater was low, groundwater with As(III) dominance likely promoted their abundance which possibly played an important role in chemolithoautotrophic oxidation of As(III) to As(V). Fe and As(III) were the major environmental factors influencing the community and abundance of arsenite-oxidizing bacteria. The knowledge gained from this study can be used to further contribute to the development of bioremediation strategies for As removal from groundwater resources.Termites are a large and important group of insects in terrestrial ecosystems that decompose lignocelluloses. Among these, Microcerotermes diversus Silvestri (Termitidae) is a destructive invasive pest in many tropical and subtropical regions. In the present study, M. diversus specimens were collected from traps in Ahvaz, Bandar Abbas, Kish, and Khark Islands. Sample suspensions were prepared in 5-ml DH2O and cultured on nutrient agar (NA) medium. All 47 representative bacterial isolates were evaluated for cellulolytic activity by growing them on cellulose Congo-red agar medium. Based on some key phenotypic characteristics, the isolates were tentatively identified at the genus level. These were confirmed by 16S rRNA analysis using a universal primer pair (P1/P6). Sequence alignments revealed that most of the isolates are novel species so far found in the termite guts. Results showed that some of the isolates are common for all surveyed areas. However, there were significant differences in their numbers and degree of cellulolytic activity. The species reported here for the first time for termites of Iran are Bacillus wiedmanii, B. paramycoides, Elizabethkingia anophelis, Lysinibacillus pakestanensis, Pseudomonas hibiscicola, Actinetobacter pitti, A. venetianus, and Ochrobactrum anthropi.Pickled cowpea (Vigna unguiculata [Linn.] Walp) is a popular fermented vegetable in China that is made by spontaneous fermentation. Prior to this study, little was known about its microbial community. Eighteen pickled cowpea samples were collected in Enshi City, China, in 2018. The bacterial diversity within these samples was evaluated using a combination of high-throughput sequencing (Illumina MiSeq platform) targeting the V3-V4 region of the 16S rRNA gene sequence and culture-dependent methods. Staurosporine molecular weight A total of 456,318 high-quality 16S rRNA gene sequence reads were obtained, and these reads were clustered into 19,712 OTUs with 97.0% similarity. The core bacterial phyla were Actinobacteria, Bacteroidetes, Proteobacteria, and Firmicutes; the core bacterial genera were Levilactobacillus, Lactiplantibacillus, Companilactobacillus, Pediococcus, Lactobacillus, Weissella, and Pseudomonas. Using the spread-plating method, 39 lactic acid bacteria (LAB) strains were isolated and identified based on the nearly complete 16S rRNA gene sequence.

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