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Isolation, screening, and characterization of heavy metal-resistant bacteria from solid waste dumping sites in Central Gondar, Northwest, Ethiopia.
Sci Prog
January 2025
Department of Environmental and Industrial Biotechnology, Institute of Biotechnology, University of Gondar, Gondar, Ethiopia.
Objective: Heavy metal pollution is one of the more recent problems of environmental degradation caused by rapid industrialization and human activity. The objective of this study was to isolate, screen, and characterize heavy metal-resistant bacteria from solid waste disposal sites.
Methods: In this study, a total of 18 soil samples were randomly selected from mechanical sites, metal workshops, and agricultural land that received wastewater irrigation.
Coronary Myocardial Bridge Updates: Anatomy, Pathophysiology, Clinical Manifestations, Diagnosis, and Treatment Options.
Tex Heart Inst J
January 2025
Center for Women's Heart and Vascular Health, The Texas Heart Institute, Houston, Texas.
Myocardial bridging is a frequent anomaly of the heart in humans and other animals. A myocardial bridge is typically characterized by the systolic narrowing seen with traditional catheter angiography, but this abnormality is not by itself a sign of ischemia or the need for intervention. In particular, transient spontaneous angina must be corroborated by reproducible narrowing during acetylcholine testing; this narrowing occurs during resting conditions and is responsive to nitroglycerin administration.
View Article and Find Full Text PDFNew taxa and a combination in Glomerales (Glomeromycota, Glomeromycetes).
MycoKeys
January 2025
Department of Genetic, Plant Breeding & Biotechnology, West Pomeranian University of Technology in Szczecin, Słowackiego 17, PL-71434 Szczecin, Poland.
This article presents the results of morphological studies, as well as comparisons and phylogenetic analyzes of sequences of four arbuscular mycorrhizal fungi (AMF, phylum Glomeromycota): , strain 211, Isolate 517, and Isolate 524. strain 211 was previously characterized only by sequences of the 45S nuc rDNA region (= 18S, partial, ITS-1-5.8S-ITS2, 28S, partial) and the gene (without any morphological data) that were deposited in GenBank under the incorrect name " strain 211".
View Article and Find Full Text PDFStepwise Chemical Reduction of [4]Cyclo[4]helicenylene: Stereo Transformation and Site-Selective Metal Complexation.
Precis Chem
January 2025
Department of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States.
A highly strained macrocycle comprising four [4]helicene panels, [4]cyclo[4]helicenylene ([4]CH, ), was synthesized through a one-pot macrocyclization and chemically reduced by alkali metals (Na and K), revealing a four-electron reduction process. The resulting di-, tri-, and tetraanions of compound were isolated and crystallographically characterized by X-ray diffraction. Owing to the four axially chiral bi[4]helicenyl fragments, a reversible stereo transformation of between the (,,,)- and (,,,)-configurations was disclosed upon the two-electron uptake, which was rationally understood by theoretical calculations.
View Article and Find Full Text PDFOne health investigation following a cluster of Crimean-Congo haemorrhagic fever, North Macedonia, July to November 2023.
Euro Surveill
January 2025
Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary.
BackgroundCrimean-Congo haemorrhagic fever (CCHF) is a severe illness characterised by fever, bleeding and high case-fatality rates. The disease is caused by CCHF virus (CCHFV), transmitted by ticks and infectious body fluids and tissues.AimAfter CCHF was diagnosed in three persons in 2023, we aimed to investigate the presence of antibodies against CCHFV in healthcare workers (HCW), sheep and goats, and of CCHFV in ticks, in an area in North Macedonia and characterise virus strains.
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