Small-colony variants (SCVs), isolated from a population of the parental strains of Staphylococcus aureus, S. haemolyticus and S. epidermidis lost a number of features typical of the species and genus and were characterized by delayed growth, altered colony morphology, lack of pigmentation and changed carbohydrate consumption. Some SCVs of S. aureus had no plasmocoagulase and lecithinase activities. The analysis of 14 SCVs showed that they were auxotrophic for hemin and menadione and resistant to aminoglycoside antibiotics. Such aberrant phenotypic characteristics complicated or made it impossible their identification by the common clinical laboratory methods. The tRNA intergenic spacer length polymorphism analysis was used to identify the atypical forms of the staphylococci.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Atypical development of sequential manual motor planning and visuomotor integration in children with autism at early school-age: A longitudinal kinematic study.
Autism
January 2025
Department of Psychology, Umeå University, Sweden.
Many children with autism struggle with movement difficulties, yet the causes of these difficulties remain unclear. One possible explanation is atypical motor planning and integration of visual and motoric information. Before performing a goal-directed movement, the brain creates a prediction of the movement based on visual and sensory information and previous experience, forming a "blueprint" of the motor steps needed to achieve the goal.
View Article and Find Full Text PDFInvestigations into the growth and formation of biofilm by at temperatures encountered during infection.
Biofilm
June 2025
Infectious Bacterial Diseases Research Unit, USDA Agriculture Research Service, National Animal Disease Center, Ames, IA, USA.
The genus comprises unique atypical spirochete bacteria that includes the etiological agent of leptospirosis, a globally important zoonosis. Biofilms are microecosystems composed of microorganisms embedded in a self-produced matrix that offers protection against hostile factors. Leptospires form biofilms in rice fields and unsanitary urban areas, and while colonizing rodent kidneys.
View Article and Find Full Text PDFWhole genome sequencing analysis of enteropathogenic from human and companion animals in Korea.
J Vet Sci
December 2024
College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea.
Importance: This study is essential for comprehending the zoonotic transmission, antimicrobial resistance, and genetic diversity of enteropathogenic (EPEC).
Objective: To improve our understanding of EPEC, this study focused on analyzing and comparing the genomic characteristics of EPEC isolates from humans and companion animals in Korea.
Methods: The whole genome of 26 EPEC isolates from patients with diarrhea and 20 EPEC isolates from companion animals in Korea were sequenced using the Illumina HiSeq X (Illumina, USA) and Oxford Nanopore MinION (Oxford Nanopore Technologies, UK) platforms.
Chlamydia psittaci pneumonia - evolutionary aspects on chest CT.
BMC Infect Dis
January 2025
Department of Radiology, The Affiliated Brain Hospital of Nanjing Medical University, No.264, Guangzhou Road, Gulou District, Nanjing, 210029, Jiangsu, China.
Purpose: To present the different findings of Chlamydia psittaci (C. psittaci) pneumonia on computed tomography (CT) according to the progression of the disease, to improve diagnostic accuracy, guide early clinical diagnosis, evaluate treatment efficacy, and reduce the mortality associated with the disease.
Methods: In total, 80 cases of C.
The co-receptor Tetraspanin12 directly captures Norrin to promote ligand-specific β-catenin signaling.
Elife
January 2025
Departments of Molecular & Cellular Physiology and Structural Biology, Stanford University School of Medicine, Stanford, United States.
Wnt/β-catenin signaling directs animal development and tissue renewal in a tightly controlled, cell- and tissue-specific manner. In the mammalian central nervous system, the atypical ligand Norrin controls angiogenesis and maintenance of the blood-brain barrier and blood-retina barrier through the Wnt/β-catenin pathway. Like Wnt, Norrin activates signaling by binding and heterodimerizing the receptors Frizzled (Fzd) and low-density lipoprotein receptor-related protein 5 or 6 (LRP5/6), leading to membrane recruitment of the intracellular transducer Dishevelled (Dvl) and ultimately stabilizing the transcriptional coactivator β-catenin.
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!