WebNov 25, 2024 · Rod-shaped cells; irregular, club-shaped (Coryne), or V-shaped arrangements (Fig. 4.1) Can undergo snapping movements after cell division – cause cells to look like Chinese letters or palisades. Club shape due to metachromatic polyphosphate granules at ends of cells. Gram stain: Gram positive. Growth: Aerobes; catalase positive. Webaerobic samples. Gram stain showed positive coryneform rods. Within 48– 72 hours, the isolate yielded growth on blood, chocolate, and Schaedler agar; colonies were 1–2 mm in di-ameter and gray. The specifi city of the organism was unsatisfactory with the system we used (API Coryne sys-
Corynebacterium urealyticum - an overview ScienceDirect Topics
To identify C. diphtheriae, a Gram stain is performed to show Gram-positive, highly pleomorphic organisms often looking like Chinese letters. Stains like Albert's stain and Ponder's stain are used to demonstrate the metachromatic granules formed in the polar regions. The granules are called polar granules, Babes Ernst granules or volutin granules. An enrichment medium, such as Löffler's medium, is used to preferentially grow C. diphtheriae. After that, a differential plate known as tell… WebA small amount is spread in a very thin layer on a glass slide. This is called a smear. A series of stains are added to the sample. A lab team member examines the stained … shish mile end menu
BSCI 424 Pathogenic Microbiology -- Corynebacterium
WebApr 22, 2011 · Corynebacterium jeikeium strain K411 Description and significance Corynebacteria are gram positive, catalase-positive, aerobic, mostly non-motile rods. Corynebacterium jeikeium, an opportunistic pathogen, commonly colonizes in the skin, especially in immunocompromised hosts. WebA Gram stain is a laboratory test that checks for bacteria at the site of a suspected infection or in certain bodily fluids. A medical laboratory scientist processes the Gram stain, which gives relatively quick results, so healthcare providers can know if bacteria are present, and, if so, the general type (s). Corynebacterium is a genus of Gram-positive bacteria and most are aerobic. They are bacilli (rod-shaped), and in some phases of life they are, more specifically, club-shaped, which inspired the genus name (coryneform means "club-shaped"). They are widely distributed in nature in the microbiota of animals … See more The genus Corynebacterium was created by Lehmann and Neumann in 1896 as a taxonomic group to contain the bacterial rods responsible for causing diphtheria. The genus was defined based on morphological characteristics. … See more The principal features of the genus Corynebacterium were described by Collins and Cummins, for Coryn Taylor in 1986. They are gram-positive, catalase-positive, non- See more The most notable human infection is diphtheria, caused by C. diphtheriae. It is an acute, contagious infection characterized by … See more Nonpathogenic species of Corynebacterium are used for important industrial applications, such as the production of amino acids and nucleotides, bioconversion of steroids, degradation of hydrocarbons, cheese aging, and production of See more Comparative analysis of corynebacterial genomes has led to the identification of several conserved signature indels (CSIs) that are unique to the genus. Two examples of CSIs … See more Corynebacterium species occur commonly in nature in soil, water, plants, and food products. The nondiphtheiroid Corynebacterium species can even be found in the See more Corynebacterium comprises the following species: • C. accolens Neubauer et al. 1991 • C. afermentans Riegel et al. 1993 • C. alimapuense Claverias et al. 2024 See more shishnadeva