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Markussen Graves posted an update 10 days ago
n pathologic findings after primary endoscopic submucosal dissection.The widespread use of the herbicide, propanil, causes severe environmental problems. In this study, the effects of propanil on the bacterial community in a sediment slurry were determined. Moreover, the degradation of the herbicide by pure and mixed cultures was first conducted under anaerobic conditions. The results showed that propanil caused significant changes in the bacterial community under anaerobic conditions. Four bacterial strains, i.e., Geobacter sp. Pr-1, Paracoccus denitrificans Pr-2, Pseudomonas sp. Pr-3, and Rhodococcus sp. Pr-4, isolated from the an enrichment sediment slurry were the first pure cultures that degraded propanil and 3,4-dichloroaniline (3,4-DCA) under anaerobic conditions. Some individual isolates showed the slow degradation of propanil and 3,4-DCA, but the mixture of the four strains increased the degradation rates of both compounds. The mixed culture of these isolates transformed more than 90% of propanil within 10 days in liquid media with the amendment of dextrose, glucose, or acetate. The determination of degradation pathway showed that propanil was transformed to 3,4-DCA and some other products before degrading completely. This study provides valuable information on the effects of propanil on the bacterial community and the synergistic degradation of propanil under anaerobic conditions.Acinetobacter baumannii is an opportunistic and increasingly multi-drug resistant human pathogen rated as a critical priority one pathogen for the development of new antibiotics by the WHO in 2017. Despite the lack of flagella, A. baumannii can move along wet surfaces in two different ways via twitching motility and surface-associated motility. While twitching motility is known to depend on type IV pili, the mechanism of surface-associated motility is poorly understood. In this study, we established a library of 30 A. baumannii ATCC® 17978™ mutants that displayed deficiency in surface-associated motility. By making use of natural competence, we also introduced these mutations into strain 29D2 to differentiate strain-specific versus species-specific effects of mutations. Mutated genes were associated with purine/pyrimidine/folate biosynthesis (e.g. purH, purF, purM, purE), alarmone/stress metabolism (e.g. Ap4A hydrolase), RNA modification/regulation (e.g. methionyl-tRNA synthetase), outer membrane proteins (e.g. ompA), and genes involved in natural competence (comEC). All tested mutants originally identified as motility-deficient in strain ATCC® 17978™ also displayed a motility-deficient phenotype in 29D2. By contrast, further comparative characterization of the mutant sets of both strains regarding pellicle biofilm formation, antibiotic resistance, and virulence in the Galleria mellonella infection model revealed numerous strain-specific mutant phenotypes. Our studies highlight the need for comparative analyses to characterize gene functions in A. baumannii and for further studies on the mechanisms underlying surface-associated motility.A Gram-negative-staining, endospore-forming, rod-shaped bacterium, designated T1T, was isolated from root nodules of soybean (Glycine max (L.) Merr) in Heilongjiang Province of China. The isolate was identified as a member of the genus Paenibacillus based on phenotypic and phylogenetic characteristics. The 16S rRNA sequence was closely related to that of Paenibacillus sacheonensis SY01T with a similarity of 98.4%. Average nucleotide identity and in silico DNA-DNA hybridization values between strain T1T and P. sacheonensis DSM 23054 T were 81.4% and 25.4%, respectively. The DNA G + C content of strain T1T was 58.2 mol%. meso-Diaminopimelic acid was detected in the cell-wall peptidoglycan. The major cellular fatty acids were anteiso-C150, iso-C160 and iso-C150. The predominant respiratory quinone was MK-7. The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, five unidentified phospholipids, four unidentified aminophospholipids, an unidentified glycolipid and an unidentified lipid. Based on these results, T1T is considered to represent a novel species of the genus Paenibacillus, for which the name Paenibacillus glycinis sp. nov. is proposed. The type strain is T1T (= CGMCC 1.18563 = KCTC43227).
Non-ST segment elevation acute coronary syndromes (NSTE-ACS) account for 70% of the patients with ACS. Most NSTE-ACS patients receive invasive therapies. Despite improvements in the systems of care and interventional techniques, the mortality of NSTE-ACS patients remains high, and delays in the treatment of NSTE-ACS patients continue to be a problem. Nrf2 activator This paper aims to discuss the importance of timeliness of invasive strategy in the treatment of NSTE-ACS as well as the state-of-the-art approach to this critical health problem.
The relatively recent guidelines and meta-analyses on the subject try to shed light on the issue of timing. The picture is now a little clearer, but still much remains to be answered. We know that the early invasive strategy at least is safe and improves recurrent ischemia and refractory angina as well as the length of stay, lowering the cost. In higher-risk patients, there is a benefit for a more aggressive approach. The definition of “early” in the early invasive strategy has evolved over the past decade and currently pertains to an invasive strategy performed within 12-24 h of presentation.
The relatively recent guidelines and meta-analyses on the subject try to shed light on the issue of timing. The picture is now a little clearer, but still much remains to be answered. We know that the early invasive strategy at least is safe and improves recurrent ischemia and refractory angina as well as the length of stay, lowering the cost. In higher-risk patients, there is a benefit for a more aggressive approach. The definition of “early” in the early invasive strategy has evolved over the past decade and currently pertains to an invasive strategy performed within 12-24 h of presentation.The nature of endometrial morular metaplasia (MorM) is still unknown. The nuclear β-catenin accumulation and the not rare ghost cell keratinization suggest a similarity with hard keratin-producing odontogenic and hair matrix tumors rather than with squamous differentiation. We aimed to compare MorM to hard keratin-producing tumors. Forty-one hard keratin-producing tumors, including 26 hair matrix tumors (20 pilomatrixomas and 6 pilomatrix carcinomas) and 15 odontogenic tumors (adamantinomatous craniopharyngiomas), were compared to 15 endometrioid carcinomas with MorM with or without squamous/keratinizing features. Immunohistochemistry for β-catenin, CD10, CDX2, ki67, p63, CK5/6, CK7, CK8/18, CK19, and pan-hard keratin was performed; 10 cases of endometrioid carcinomas with conventional squamous differentiation were used as controls. In adamantinomatous craniopharyngiomas, the β-catenin-accumulating cell clusters (whorl-like structures) were morphologically similar to MorM (round syncytial aggregates of bland cells with round-to-spindled nuclei and profuse cytoplasm), with overlapping squamous/keratinizing features (clear cells with prominent membrane, rounded squamous formations, ghost cells).