Diversity and frequency of Nocardia spp. in the soil of Isfahan province, Iran
Journal Title: Asian Pacific Journal of Tropical Biomedicine - Year 2012, Vol 2, Issue 6
Abstract
Objective To isolate and identify Nocardia spp. from soil in different regions of Isfahan province in the center of Iran. Methods This study was conducted in 32 districts (16 cities and 16 villages) in Isfahan province during two years. A total of 800 soil samples from these regions were studied by using kanamycin. The isolated Nocardia species were examined by gram and acid-fast staining and were identified biochemically and morphologically. The frequency and distribution of Nocardia spp. were determined in relation to different factors such as soil pH and temperate climate. Results From 153 (19.1%) Nocardia isolates identified, Nocardia asteroids (N. asteroids) complex (45.5%) and Nocardia brasiliensis (N. brasiliensis) (24.7%) were the most frequently isolated species, followed by Nocardia otitidiscaviarum (2.2%), Nocardiopsis dassonvillei, Actinomadura actinomadura (each 1.7%) and Nocardia transvalensis (1.1%) and also unknown spp. (23.0%). In this study, most species (54.4%) of Nocardia, especially N. asteroides complex were isolated from soils with pH: 7.01–8, whereas in pH: 8.01–9 more N. brasiliensis was isolated. The most Nocardia spp. was detected from regions with semi-nomadic and temperate climate (41.1%). Conclusions N. asteroids complex is more prevalent in Isfahan province and soil can be a potential source of nocardiosis infections. It is to be considering that climate and soil pH are involved in the frequency and diversity of aerobic Actinomycetes.
Authors and Affiliations
R Kachuei, M Emami
Keywords
Related Articles
- EP ID EP256997
- DOI 10.1016/S2221-1691(12)60079-3
- Views 97
- Downloads 0
Protective and therapeutic potentials of Dunaliella salina on aging-associated cardiac dysfunction in rats
Objective: To investigate the possible protective and/or therapeutic potentials of Dunaliella salina (D. salina) biomass, its carotenoid and polar fractions on cardiac dysfunction associated with D-galactose (D-GAL) indu...
Antioxidant potential of phenolic extracts of Mimusops elengi
Objective To evaluate the antioxidant potential of the phenolic extracts of Mimusops elengi (M. elengi) L. (Sapotaceae). Methods The extract of stem bark and seeds of M. elengi were prepared in methanol and acetone:wa...
Curcumin in chronic lymphocytic leukemia – A review
Curcumin is a widely researched natural product and is known to possess anticarcinogenic properties. Chronic lymphocytic leukemia is a type of leukemia that principally affects patients with age higher than 60 years. Sin...
Phytochemistry and potential therapeutic actions of Boswellic acids: A mini-review
The pentacyclic triterpenic acids isolated from the oleo gum resin of various Boswellia species are collectively called as Boswellic acids (BA). The oleo gum resin obtained from Indian variety i.e. Boswellia serrata (Fam...
Phytochemical bioprospecting, antioxidant, antimicrobial and cytotoxicity activities of saline extract from Tithonia diversifolia (Hemsl) A. Gray leaves
Objective: To evaluate antimicrobial and antioxidant properties of saline extract from Tithonia diversifolia leaves by phytochemical bioprospecting, and investigate its safety against animal cells. Methods: The saline ex...