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PubMed1979

Investigations into rhizosphere microflora of some plants in Libya.

The present investigation deals with the effect of raising Hordeum vulgare and Arachis hypogaea at two different stages on the microbial rhizosphere population. The studies were extended to reveal the microbiological occurrence in different horizons of a soil profile corresponding in length to root regions. Bacteria were most abundant, followed by actinomycetes while fungi were less abundant and more restricted in their distribution. The three groups of microorganisms varied markedly in the rhizosphere of the two plants under investigation. The plant age had a great influence on the frequency of occurrence of the different microorganisms. One strain of bacteria, six fungi and the members of the grey series of Streptomyces were dominant. Actinomycetes and fungi diminished with the depth of soil, while the bacterial counts increased.

Actinomycetaceae↗
PubMed2002

Trichophyton violaceum is the dominant cause of tinea capitis in children in Tripoli, Libya: results of a two year survey.

The causative agents of tinea capitis in Libyan nationals attending the out patient Dermatology Clinic of the Tripoli Medical Centre over the period December 1997 to December 1999 were investigated. Samples (hair and scalp scrapings) were taken from 940 patients who presented with suspected tinea capitis. The etiological agents were identified in 584 cases. Trichophyton violaceum was found to be the most prevalent organism isolated being responsible for 64.4% (376/584) of culture positive cases, followed by Microsporum canis at 24.7% (144/584) and T. mentagrophytes at 5.5% (32/584). The majority of infections (380/584) occurred in females and in children with ages less than 12 years (554/584).

Academic Medical Centers↗
PubMed2002

Dermatophytes and other fungi associated with skin mycoses in Tripoli, Libya.

This study sought to determine the prevalence of skin infections and their causative agents in the Libyan population. Samples were collected from 2224 patients attending the Dermatology Clinics of the Tripoli Medical Centre (TMC) between August 1997 and December 1999 and were submitted to a mycology laboratory for analysis. Diagnosis was confirmed by microscopic examination in 1180 cases (53.1%) and the causative agent was isolated and cultured in 1160 cases (52.2%). Dermatophytes, Malassezia furfur and Candida albicans were the most common etiological agents isolated. Tinea corporis accounted for 45.9% of cases (85% of cases occurred in children below 15 years of age). The frequency of the other clinical types in descending order was pityriasis versicolor 27.8% (322 cases), candidiosis 13.4% (156 cases), tinea pedis 8.1% (94 cases), tinea manuum 2.6% (30 cases) and tinea barbae 2.2% (26 cases). Trichophyton violaceum was the most common etiological agent, responsible for 44% (300 cases) of dermatophyte infections. Malassezia furfur was ranked the second most frequent causative agent being found in 27.8% of cases, followed by Trichophyton rubrum 13.8% (160 cases) and Candida albicans 10% (116 cases). Other species isolated included Microsporum canis 8.1% (94 cases), Epidermophyton floccosum 6.6% (76 cases) and Trichophyton mentagrophytes 3.1% (36 cases).

Adolescent↗