What is the arrangement of Corynebacterium Xerosis?

They may be straight or slightly curved with tapered and sometimes clubbed ends. One species ( Corynebacterium matruchotii ) has a “whip-handle” shape. Cells are usually arranged singly or in pairs, often in a “V” formation or in palisades of several parallel cells.

Where is C. xerosis found?

Background. Corynebacterium xerosis is a commensal organism found in skin and mucous membranes of humans. It is considered an unusual pathogen, and it is rarely found in human and animal clinical samples.

Is C. xerosis aerobic?

This bacteria is a Gram positive, rod shaped aerobe. C. xerosis is referred to as a diptheriod because of its relation to C.

What is the cellular morphology of Corynebacterium?

Corynebacterium diphtheriae is a Gram-positive nonmotile, club-shaped bacillus. Strains growing in tissue, or older cultures in vitro, contain thin spots in their cell walls that allow decolorization during the Gram stain and result in a Gram-variable reaction.

What antibiotic treats 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.

Is E. coli Gram-positive or negative?

Escherichia coli (E. coli) is a Gram-negative, rod-shaped, facultative anaerobic bacterium. This microorganism was first described by Theodor Escherich in 1885.

Is Corynebacterium Xerosis normal flora?

Corynebacterium xerosis is part of the normal flora of the skin, nasopharynx, conjunctives and it has recently been isolated from vaginal swabs.

How serious is Corynebacterium?

Diphtheria is a serious infection caused by strains of bacteria called Corynebacterium diphtheriae that make toxin (poison). It can lead to difficulty breathing, heart failure, paralysis, and even death. CDC recommends vaccines for infants, children, teens, and adults to prevent diphtheria.

Is Corynebacterium a normal flora?

Corynebacterium jeikeium is considered part of the normal skin flora, similar to S. epidermidis. This bacterium species resides on the skin of most humans and is commonly cultured from hospitalized patients.

What part of the human body does Corynebacterium colonize?

C. diphtheriae usually colonize a local lesion in the upper respiratory tract (although cutaneous diphtheria can occur as well) where the toxin secreted by the bacteria cases necrotic injury to epithelial cells.

How is Corynebacterium transmitted?

The primary modes of dissemination are by airborne respiratory droplets, direct contact with droplets, or infected skin lesions.

What bacteria shape is E. coli?

rod-shaped
E. coli is a Gram negative anaerobic, rod-shaped, coliform bacteria of the genus Escherichia, commonly found in the lower intestine of humans and animals.

Why is c.xerosis known as a diptheriod?

C. xerosis is referred to as a diptheriod because of its relation to C. diptheriae, the bacterium which causes diptheria. Mostly inocuous, C. xerosis is commonly found on human skin and has been known to cause opportunistic skin infections and endocarditis.

What does xerosis cutis stand for in medical category?

Xerosis cutis (synonyms: dry skin, xerosis, xeroderma) is defined as skin deficient in hydrolipids. The condition is characterized by decreased quantity and/or quality of lipids and/or hydrophilic substances (the latter is referred to as natural moisturizing factor) 1. The ICD 10 lists xerosis cutis (L85.3) as a distinct diagnosis.

What kind of skin infections can C xerosis cause?

Mostly inocuous, C. xerosis is commonly found on human skin and has been known to cause opportunistic skin infections and endocarditis. Because of its natural occurance on human skin, this bacteria is an excellent model for a variety of disinfectant and treated article testing.

What does xerosis mean for an elderly person?

Xerosis describes rough or dry skin, which is seen in almost all elderly persons. Conditions of low humidity, such as artificially heated rooms, especially forced hot air heating, exacerbate this condition.