Showing papers by "Ali H. Bahkali published in 1999"
TL;DR: Aerobiological studies to evaluate allergenic fungal spores in the atmosphere of Riyadh provide valuable information for the diagnosis and prophylaxis of allergic diseases due to airborne fungi.
Abstract: Aerobiological studies to evaluate allergenic fungal spores in the atmosphere of Riyadh were conducted. Burkard personal volumetric sampler were operated as volumetric ‘viable’ spore traps at two different sites (Al-Batha, a more developed area in the south and Al-Ulia, a less developed area in the north) in Riyadh. Twice a week samplings were carried out over a period of 12 month. The seasonal fluctuations of the most frequent fungi were plotted as ‘major’ components. The dominant species at the two sites were members of the genera Alternaria, Aspergillus, Cladosporium, Penicillium and Ulocladium. Drechslera, Fusarium, Rhizopus and Stachybotrytis species were minor components or sporadic. Seasonal variations of the total colonies were significantly (p < 0.05) different. They showed higher concentrations in the winter season and the lowest in summer. The Al-Batha site was always higher in spore concentrations than the Al-Ulia site. The results provide valuable information for the diagnosis and prophylaxis of allergic diseases due to airborne fungi.
34 citations
TL;DR: Airborne fungi were grouped into “major” and “minor” components depending upon their frequency of appearance and catch percentage in the air, and higher concentrations of fungi were found at the developed site than at the less developed site, both in the morning and in the afternoon.
Abstract: An aerobiological study to identify and quantify allergenic fungi and their seasonal fluctuations was conducted at two different sites, (Al-Batha, a more developed area in the south and Al-Ulia, a less developed area in the north) in Riyadh city, using portable Personal Volumetric Air Sampler (Burkard Manufacturing Co., England). Sampling was conducted twice a week in both the morning and in the afternoon at both sites, for a period of 12 months. Airborne fungi were grouped into “major” and “minor” components depending upon their frequency of appearance and catch percentage in the air. Cladosporium spp., Penicillium spp., Aspergillus spp., Alternaria spp. and Ulocladium spp. were included as major components. Minor components included Drechslera spp., Rhizopus spp., Fusarium spp. and Stachybotryis spp. In general, higher concentrations of fungi were found at the developed (Al-Batha) site than at the less developed (Al-Ulia) site, both in the morning and in the afternoon.
26 citations
TL;DR: Fungi in the house‐dust of houses in the less populated and densely populated areas of Riyadh, Saudi Arabia, were screened and Aspergillus was the predominant genus represented by highest number of species followed by Penicillium.
Abstract: Fungi in the house-dust of houses in the less populated and densely populated areas of Riyadh, Saudi Arabia, were screened. The screened area included drawing rooms, living rooms, kitchens, bedrooms and bathrooms. A total of 74 fungal species were isolated. The highest number of fungal colonies were found in the living rooms followed by bedrooms. The number of fungal colonies isolated were higher in densely populated areas compared with less populated areas. Aspergillus was the predominant genus represented by highest number of species followed by Penicillium.
7 citations
TL;DR: A correlation was found between quntity of hair degradation and percent of coloured zone shown on DTM by the fungi tested.
Abstract: A total number of 28 species were isolated from different type of hairs including, sheep, goat, cow, rabbit and human hairs, by hair baiting technique. Isolated fungi were tested for hair degradation and also grown on Modified Dermatophyte Test Medium (DTM). A correlation was found between quntity of hair degradation and percent of coloured zone shown on DTM by the fungi tested.
2 citations