Can Corynebacterium grow on MacConkey agar?

Can Corynebacterium grow on MacConkey agar?

To diagnose the Corynebacterium species, samples include pus, exudate, affected tissues and urine. The presence of coryneform organisms in smears is diagnostic. Culture on blood agar, selective blood agar and MacConkey agar are also diagnostic, they do not grow on MacConkey.

What agar does Corynebacterium grow on?

Tinsdale agar (TIN) is used for the primary isolation and identification of Corynebacterium diphtheriae.

Does Corynebacterium grow on blood agar?

C. diphtheriae grows well on blood agar, but tellurite blood agar (Hoyle’s medium) is recommended as this inhibits other respiratory flora and allows the characteristic colonial morphology of the three biotypes (gravis, intermedius and mitis) to develop.

What is the selective agar for Corynebacterium diphtheria?

BD Tellurite Agar (Hoyle) is a partially selective and differential medium for the isolation of Corynebacterium diphtheriae from clinical specimens.

What bacteria can grow on MacConkey agar?

Altogether, MacConkey agar only grows gram-negative bacteria, and those bacteria will appear differently based on their lactose fermenting ability as well as the rate of fermentation and the presence of a capsule or not.

How do you treat Corynebacterium?

Many antibiotics are effective, including penicillin, erythromycin, clindamycin, rifampin, and tetracycline; erythromycin or penicillin is the treatment of choice and is usually given for 14 days.

What bacteria will grow on MacConkey agar?

How is potassium tellurite used to treat Corynebacterium?

Potassium tellurite is used as selective agent as it allows growth of Corynebacterium and inhibits growth of other bacteria This may be a blood, choc agar with potassium tellurite added. agar based medium enriched with L- cyctine and bovine serum. Other ingredients include potassium tellurite and sodium thiosulfate.

What kind of agar has Corynebacterium it?

Blood Agar, Loefflers Medium, or Cooked Meat Medium. Columbia CNA ( Corynebacterium spp.), Tinsdale Medium, or Cystine-Tellurite Agar ( Corynebacterium diphtheriae ).

What kind of infections does Corynebacterium jeikeium cause?

Corynebacterium jeikeium: opportunistic infections (especially in immunocompromised patients) Corynebacterium urealyticum: urinary tract infections (UTI’s); rare but important Corynebacterium pseudotuberculosis: subacute relapsing lymphadenitis Corynebacterium ulcerans: pharnygitis

Which is the best selective media for Corynebacterium?

Selective media are essential for isolation and recognition of C. diphtheriae. Potassium tellurite is used as selective agent as it allows growth of Corynebacterium and inhibits growth of other bacteria