Is Mycobacterium Marinum Gram positive or negative?

Mycobacteriosis is caused by members of the genus Mycobacterium, which are Gram-positive, acid fast, pleomorphic rods in the family Mycobacteriaceae and order Actinomycetales. This genus is traditionally divided into two groups: the members of the Mycobacterium tuberculosis complex (e.g., M. tuberculosis, M. bovis, M.

How Mycobacterium Marinum is diagnosed?

Polymerase chain reaction (PCR) amplification techniques using Mycobacterium genus-specific primers can be used to diagnose M marinum infection directly in the biopsy sample. Tuberculin skin test using purified protein derivative is positive in 67%-100% of cases.

Is Mycobacterium Marinum serious?

For people with compromise of the immune system, M. marinum infection can be especially serious and involve disseminated (widespread) disease. If an infection is suspected under such circumstances, a health-care provider should be promptly consulted.

What disease does Mycobacterium Marinum cause?

Mycobacterium marinum is a non-tuberculous mycobacterium that causes a tuberculosis-like illness in fish and can infect humans when injured skin is exposed to a contaminated aqueous environment.

What does Mycobacterium marinum granuloma look like?

To the Editor: Mycobacterium marinum infections, commonly known as fish tank granuloma, produce nodular or ulcerating skin lesions on the extremities of healthy hosts. Delay of diagnosis is common, and invasion into deeper structures such as synovia, bursae, and bone occurs in approximately one third of reported case-patients ( 1 ).

What kind of infections can Mycobacterium marinum cause?

Mycobacterium marinum 1 Mycobacterium marinum Infection. 2 Tuberculosis and Atypical Mycobacterial Infections. 3 Selected Zoonoses. 4 Mycobacterium marinum Infection. 5 Environmental Causes of Dermatitis. 6 Nontuberculous Mycobacterial Skin Infections. 7 Cutaneous infections. 8 Selective Autophagy.

What’s the best temperature to culture Mycobacterium marinum?

Mycobacterium marinum grows best at low temperatures, and culture at 28 to 30°C (rather than 37°C) is required for optimal isolation. Mycobacterium haemophilum and M. fortuitum also produce nodular skin lesions, usually in severely immunocompromised people.

How long to treat invasive Mycobacterium marinum infection?

Once invasive M. marinum disease was diagnosed, patients with invasive disease were treated for an average of 11.4 months, three times longer than the typical course for M. marinum superficial infections ( 1 ). Rifampin and ethambutol were used most often in invasive infections, although many therapeutic choices exist.