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  • 1
    Electronic Resource
    Electronic Resource
    Distribution of clinically important thermophilic actinomycetes in vegetable substrates and soil in north-western India (1989)
    Springer
    Antonie van Leeuwenhoek 56 (1989), S. 201-209 
    Details
    ISSN: 1572-9699
    Keywords: thermophilic actmonycetes in India ; Faenia rectivirgula ; Thermoactinomyces spp. ; Saccharomonospora viridis ; hay ; compost ; bagasse ; soil ; straw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Medically important thermophilic actinomycetes were isolated from 218 (64%) of 341 samples of vegetable substrates and soil examined from sites in north-western India. Thermoactinomyces vulgaris (T. candidus) was the commonest species, occurring in 56% of samples, followed by Saccharomonospora viridis in 29%, Thermoactinomyces thalpophilus in 27%, Faenia rectivirgula (Micropolyspora faeni) in 21% and Thermoactinomyces sacchari in 14%. T. vulgaris and T. thalpophilus were isolated from all types of substrate examined, with T. vulgaris always more common than T. thalpophilus. Of the other thermophilic actinomycetes, F. rectivirgula was isolated predominantly from hay (44%) and S. viridis (56%) and T. sacchari (44%) from sugarcane bagasse. The largest populations of T. vulgaris and T. thalpophilus were found in paddy straw, followed by T. sacchari, S. viridis and F. rectivirgula in sugar-cane bagasse. The widespread occurrence of these clinically important thermophilic actinomycetes suggests that exposure of humans and animals to them may be frequent in north-western India. Studies are required to determine the prevalence of extrinsic allergic alveolitis (hypersensitivity pneumonitis) caused by thermophilic actinomycetes in the local population.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00418932
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  • 2
    Electronic Resource
    Electronic Resource
    Thermophilic actinomycetes in cane sugar mills: an aeromicrobiologic and seroepidemiologic study (1995)
    Springer
    Antonie van Leeuwenhoek 67 (1995), S. 339-344 
    Details
    ISSN: 1572-9699
    Keywords: thermophilic actinomycetes ; aerial prevalence ; bagassosis ; cane sugar mills ; T. sacchari ; precipitins
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Aerial prevalence of clinically important thermophilic actinomycetes and occurrence of precipitating antibodies against them in sera of 153 exposed workers have been reported. The study was carried out in two cane sugar mills namely, the Upper Doab Sugar Mills and the Ramala Sugar Mills, located in north-west India. In both the sugar mills,T. sacchari was the predominant species, it accounted for 55.1% and 50.3% of the total population of thermophilic actinomycetes, followed byT. vulgaris (19.7% and 23.7%),T. thalpophilus (21.1% and 17.1%),Saccharomonospora viridis (3.4% and 5.0%) andSaccharopolyspora rectivirgula (Faenia rectivirgula) (0.7% and 3.9%), respectively. Precipitating antibodies against thermophilic actinomycetes were demonstrable in 34 (22.2%) workers;T. sacchari alone accounted for 20 of the positive precipitin reactions, followed byS. rectivirgula in 10. The mean absorbance values for IgG antibody activity againstT. sacchari as well asS. rectivirgula were found to be elevated significantly in the symptomatic workers than in the asymptomatic workers (p〈0.05) or unexposed controls (p〈0.001). However, the difference in IgG antibody activity was insignificant between precipitin-positive symptomatic workers and precipitin-positive asymptomatic workers. The results indicate that clinically important thermophilic actinomycetes are widely prevalent in cane sugar mills, andT. sacchari andS. rectivirgula are the major species involved in the sensitization of the bagasse workers in India.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00872932
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Occurrence and significance of precipitating antibodies against thermophilic actinomycetes in the sera of dairy herd workers, Nangali, Delhi (1991)
    Springer
    Antonie van Leeuwenhoek 59 (1991), S. 167-175 
    Details
    ISSN: 1572-9699
    Keywords: precipitating antibodies to thermophilic actinomycetes ; Faenia rectivirgula ; Saccharomonospora viridis ; dairy herd workers ; Ouchterlony's double diffusion test ; counterimmunoelectrophoresis ; enzyme-linked immunosorbent assay
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The study was prompted by the lack of information on the role of thermophilic actinomycetes in hypersensitivity pneumonitis in India. It reports the occurrence of precipitating antibodies against clinically important thermophilic actinomycetes in the sera of a population sample of dairy herd workers, Nangali, Delhi. Of 112 workers investigated, 28 (25%) showed precipitins againstFaenia rectivirgula, 4 (3.2%) againstSaccharomonospora viridis, 2 againstThermoactinomyces thalpophilus and one each againstT. vulgaris andT. sacchari. The results of enzyme-linked immunosorbent assay (ELISA) indicated that IgG antibody activity againstF. rectivirgula was significantly higher in the symptomatic group than in the asymptomatic group (p〈0.05) of workers and the controls (p〈0.01). Significant difference inF. rectivirgula IgG activity was also obtained between the precipitin-positive symptomatic group and the precipitin-positive asymptomatic group (p〈 0.05). In strong contrast, the IgG antibody activity againstT. thalpophilus was found to be uniformly low. A limited aeromicrobiological sampling of the dairy farm revealedS. viridis (55.8%) to be the commonest species followed byT. vulgaris (19.2%),T. thalpophilus (18.5%),F. rectivirgula (5%) andT. sacchari (15%). On the basis of suggestive clinical and laboratory findings, farmer's lung disease was suspected in four dairy herd workers. A comprehensive clinical evaluation including pulmonary function studies on the dairy herd workers and their long-term follow-up is indicated to determine the extent of respiratory morbidity caused byF. rectivirgula, S. viridis, T. thalpophilus, T. sacchari andT. vulgaris in India.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00580656
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    Paper (German National Licenses)
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