Genotype of three dengue-2 virus strains from Myanmar was determined as genotype II by sequencing 240 nucleotide long fragment across the E/NS1 gene junction by the primer extension dideoxy chain termination method, applying direct sequencing of the PCR product. These strains were isolated from a dengue shock syndrome (DSS) patient and two patients with dengue hemorrhagic fever (DHF) grade 1, in Yangon (Rangoon), Myanmar (Burma), in 1987. Sequence homology of all three strains were highest (96%) to New Guinea C strain (genotype II), lesser homology (93%) to Jamaican 1409 strain (genotype III), and the least homology (91%) to PR 159/S1 strain (genotype I). Two DHF strains revealed only 2 nucleotide and 3 nucleotide differences compared with DSS strain, all at the 3rd position of the codons which resulted in silent mutations.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Effector genes of type III secretion system and biofilm formation in virulent isolates carrying and genes in hospital environment.
J Med Microbiol
January 2025
Laboratory of Molecular Microbiology (Micromol), Institute of Biomedical Sciences, Universidade Federal de Uberlndia, Uberlndia, Minas Gerais, Brazil.
In critically ill patients, the occurrence of multidrug-resistant infection is a significant concern, given its ability to acquire multidrug-resistant, form biofilms and secrete toxic effectors. In Brazil, limited data are available regarding the prevalence of dissemination, and the impact of the type III secretion system (T3SS) on toxin production and biofilm formation in clinical isolates of . This study investigates the dissemination of virulent harbouring the and genes, the presence of T3SS genes and their biofilm-forming capability.
View Article and Find Full Text PDFCopy Number Variant Does Not Influence Stroke Severity in 2 C57BL/6J Mouse Models nor in Humans: An Exploratory Study.
Stroke
January 2025
Department of Experimental Neurology, Center for Stroke Research Berlin (CSB), Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Germany (M.F., S.B., S.M., K.W., M.E., A.M., U.D., C.S.).
Background: Contrary to the common belief, the most commonly used laboratory C57BL/6J mouse inbred strain presents a distinctive genetic and phenotypic variability, and for several traits, the genotype-phenotype link remains still unknown. Recently, we characterized the most important stroke survival factor such as brain collateral plasticity in 2 brain ischemia C57BL/6J mouse models (bilateral common carotid artery stenosis and middle cerebral artery occlusion) and observed a Mendelian-like fashion of inheritance of the posterior communicating artery (PcomA) patency. Interestingly, a copy number variant (CNV) spanning locus was reported to segregate in an analogous Mendelian-like pattern in the C57BL/6J colonies of the Jackson Laboratory.
View Article and Find Full Text PDFCopper-Induced Transgenerational Plasticity in Plant Defence Boosts Aphid Fitness.
Plant Cell Environ
January 2025
Institute of Organismic and Molecular Evolution, University of Mainz, Mainz, Rheinland-Pfalz, Germany.
Transgenerational plasticity in plants is an increasingly recognized phenomenon, yet it is mostly unclear whether transgenerational plasticity is relevant to both the fitness of the plant and its interacting species. Using monoclonal strains of the giant duckweed (Spirodela polyrhiza) and its native herbivore, the waterlily aphid (Rhopalosiphum nymphaeae), we assessed whether pre-treating plants with copper excess, both indoors and outdoors, induces transgenerational plasticity in plant defences that alter plant and herbivore fitness. Outdoors, copper pre-treatment tended to increase plant growth rates under recurring copper excess.
View Article and Find Full Text PDFIsolation, identification, and pathogenicity of a goose astrovirus 1 strain from goslings in Jiangsu province, China.
Microb Pathog
January 2025
Jiangsu Agri-Animal Husbandry Vocational College, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou 225300, PR China. Electronic address:
Goose astrovirus (GAstV) poses a large threat to the goose industry in China, with two genotypes: goose astrovirus genotype 1 (GAstV-1) and GAstV-2. GAstV-2 causes gout in goslings; however, understanding of GAstV-1 is limited. In this study, the GAstV-1 strain JY202323, was isolated from dead goslings, and its complete genome sequence was obtained using next-generation sequencing.
View Article and Find Full Text PDFCharacterization of a cell-adapted completely attenuated genotype GIIa porcine epidemic diarrhea virus strain.
Virology
January 2025
State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, 730046, China. Electronic address:
Porcine epidemic diarrhea virus (PEDV) has caused significant harm to the global pig industry since its discovery. In this study, a highly pathogenic strain of GIIa PEDV CH/HBXT/2018, isolated previously, was continuously passaged in Vero cells up to passage (P)240, resulting in a completely attenuated virus. The proliferation characteristics of different passages of the strain in Vero cells, pathogenicity in newborn piglets, and mutations in S gene sequence indicated that as the passage number increased, the replication efficiency of PEDV in Vero cells gradually improved, with a more pronounced cytopathic effect.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!