ABSTRACT
Two novel anaerobic, mesophilic, biohydrogen-producing bacteria, designated strains ZGM211T and G1T, were isolated from lake sediment. 16S rRNA and ATP synthase beta subunit (atpD) gene sequences and phylogenetic analysis of strains ZGM211T and G1T revealed an affiliation to the genus Clostridium sensu stricto (cluster I of the clostridia), with Clostridium acetobutylicum as the closest characterized species, showing the same sequence similarity of 96.4â% to the type strain (98.9â% between the two isolates). Cells of the two strains were rod shaped. Growth occurred at 20-45 °C, pH 4.0-8.0 and NaCl concentrations up to 2â% (w/v). Grown on glucose, the main fermentation products were H2, CO2, acetate and butyrate. The major fatty acids were C14â:â0 and C16â:â0. The DNA G+C contents of strains ZGM211T and G1T were 40.7 and 41.5 mol%, respectively. Based on phenotypic, chemotaxonomic and phylogenetic differences, strains ZGM211T (=CICC 24070T=BCRC 80950T) and G1T (=CICC 24069T=BCRC 80949T) are proposed as the type strains of novel species of the genus Clostridium with the names Clostridium guangxiense sp. nov. and Clostridium neuense sp. nov., respectively.
Subject(s)
Clostridium/classification , Lakes/chemistry , Phylogeny , Bacteria, Anaerobic/classification , Bacteria, Anaerobic/genetics , Bacteria, Anaerobic/isolation & purification , Bacterial Typing Techniques , Base Composition , China , Clostridium/genetics , Clostridium/isolation & purification , DNA, Bacterial/genetics , Fatty Acids/chemistry , Fermentation , Geologic Sediments/microbiology , Hydrogen/metabolism , Phospholipids/chemistry , RNA, Ribosomal, 16S/genetics , Sequence Analysis, DNAABSTRACT
Gouty arthritis (GA) is an inflammatory disease caused by disorders of the purine metabolism. Although increasing number of drugs have been used to treat GA with the deepening of relevant research, GA still cannot be cured by simple drug therapy. The nuclear factor-kappa B (NF-κB) signaling pathway plays a key role in the pathogenesis of GA. A considerable number of Chinese herbal medicines have emerged as new drugs for the treatment of GA. This article collected relevant research on traditional Chinese medicine monomers in the treatment of GA using NF-κB, GA, etc. as keywords; and conducted a systematic search of relevant published articles using the PubMed database. In this study, we analyzed the therapeutic effects of traditional Chinese medicine monomers on GA in the existing literature through in vivo and in vitro experiments using animal and cell models. Based on this review, we believe that traditional Chinese medicine monomers that can treat GA through the NF-κB signaling pathway are potential new drug development targets. This study provides research ideas for the development and application of new drugs for GA.