Post on 27-May-2015
Actinomycetes
Page 3
Actinomycetes (order)
Three genera
Actinomyces species Nocardia species Streptomyces species
Gram Positive Filamentous Bacteria
GENUS OXYGEN GRANULE ACIDFAST
Mycobacteria aerobe no yes
Actinomyces ANAEROBE YES no
Nocardia aerobe sometime
PARTIALLY
Streptomyces aerobe YES no
Actinomycosis
A chronic suppurative and granulomatous disease of the cervico-facial, thoracic or abdominal areas
Actinomycosis
Actinomyces israelii
Ecological Niche
Actinomyces
Endogenous (man and animals)
CLINICAL SPECIMENSActinomyces
Pus
Sulphur
granules
Drug of Choice
Penicillin
(large doses)
Serological Test
None available
Nocardiosis
Subcutaneous infections, pulmonary infections, and brain abscesses
Ecological Association
SoilEndogenous ?
Geographic Distribution
World wide
Nocardiosis
N. asteroides – Pulmonary
N. brasiliensis - Abscesses
Clinical Specimens
Sputum Pus Biopsy tissue
Serological Test
None available
Drug of Choice
Sulfamethoxazole-Trimethoprim
STREPTOMYCOSIS
Streptomyces species
Mycetoma
Streptomyces species
Ecological Association
Soil
Streptomyces may invade bone
Clinical specimens
Pus Biopsy material
Serological Test
None available
Treatment
Surgical debridement Sulfa drugs Amphotericin B