To obtain the basic information that can be used as a factor for explaining the diversity of welders' pneumoconiosis, the authors measured the concentrations of dust according to the size of dust in 71 workplaces of a shipyard where welders' pneumoconiosis have occurred. The concentrations of dust according to the size of dust showed no difference between workplaces regardless of kinds of work.
Dust* ; Pneumoconiosis

No abstract available.
Dust* ; Humans

No abstract available.
Dust* ; Mastoid*

No abstract available.
Dust* ; Mastoid*

No abstract available.
Diskectomy* ; Dust* ; Transplants*

The study have been perfomed in 80 patients (mean age: 28.87) suffered allergic rhinitis by house dust mite at Central Otorhinolaryngology Hospital and 103 Military Hospital and 45 healthy people. Among the patients, 63.75% was from 16 to 30 years old. The older people have less rate of catching disease. 60% patients have allergic individual history and 61.25% have allergic family history. 80 patients have two symptoms of rhinitis, 67 patients have three symptoms . In prick test, the rate of positive 1+ was highest. Positive results for house dust mite was higher, especially in 2+ and 3+ levels. After treatment, diameter of elevated lesions reduced significantly. 65 patients were positive in nasal stimulating test. Before treatment, patients had mastocyte disintegrate level from 6% to 40%. After treatment: IgA increased significantly, IgM increased unsignificantly Average IgE level in healthy people is lower than that in patients. Result of immune treatment after 6 months is very good and good (80%)
Dust ; Diagnosis ; Immunotherapy

A cross sectional study on the stone dust in the working environment in mines of AC, 504 in Binh Dinh province in dry seasons during 1998 and 1999, has shown that the dust contamination level was high. All indicators were above allowed standards. 9/14 of samples had an airway dust level higher 1-9 time than this of allowed standards. 100% of samples had the total dust level higher 4-37 times than this of allowed standards. The silicon levels in the stone mine of Phu Ly (4-5%) and Hoa An (22-23%). This is cause of silicosis among workers of these facilities.
Dust ; Therapies, Investigational

908 people with allergy in which bronchial asthma: 113 and 997 medical students of Ha Noi medical University and pupils without history of allergy or without allergic diseases. Method: the finding of the sensitivity for foreign body (house dust) by prick tests as method of Dreborg. The results: the rate of sensitivity for foreign body (house dust) in the normal people, people with allergy and people with bronchial asthma were a statistical significance: 13.14; 35.13 and 57.14, respectively.
Dust ; Hypersensitivity ; Foreign Bodies

No abstract available.
Dust* ; Rhinitis, Allergic*

There are only few cases of Eosinophilic Collitis(EC) have been reported worldwide. The mechanism and aetiology of EC are still unclear. We describe a 35 years old man presented with chief complaints of gastrointestinal symptoms. In blood examination, his total IgE and specific IgE to house dust mites were very high. Colonoscopy was done and histological examination from biopsy specimens reported infiltration of lymphoplasmacytic cells and eosinophils, compatible with Eosinophilic colitis. The patient was treated with antihistamine and short course of antibiotics. He was been advised to avoid house dust mites. He was then remained asymptomatic. Our report suggests house dust mites allergy as the causes of EC. Combination of antihistamine, antibiotics and avoidance of house dust mites are helpful in treating EC in this particular case.
House dust mite