Asbestos (Mg-hydrosilicate; chrysotile) is known to cause pleural diseases, pulmonary fibrosis and lung cancers, via mechanisms strongly depending on diameter-length ratio and possibly metal content. A critical question is whether synthetic hydrosilicate nanotubes (NTs) of short length possess little toxic potential compared to chrysotile. Five Mg- and two NiNTs of different lengths were assessed for cytotoxicity and pro-inflammatory responses in THP-1 macrophages and human bronchial epithelial lung cells (HBEC3-KT), in comparison with chrysotile.
View Article and Find Full Text PDFVestn Otorinolaringol
January 1997
Incidence of congenital defects of the external and middle ear in children is 1-2/10000. Surgical correction includes meatotympanoplasty followed by otoplasty. Surgical technique proposed by the authors provides persistant and satisfactory functional and cosmetic results.
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January 1997
Such congenital defects as periauricular fistulas are not rare in children. In typical position of the fistulas on the tragus the diagnosis is easy. In involvement of the floor, lobule and margin of the auricle, acoustic meatus the treatment, because of misdiagnosis, is often given for atheroma, lymphadenitis, tumors, eczema, etc.
View Article and Find Full Text PDFUsing biomicroscopy of the bulbar conjunctiva, 65 patients, aged 6 to 15 years, with catarrhal and purulent forms of acute and chronic maxillary sinusitis were examined. At the repair stage the patients were exposed to laser therapy. The results give evidence that laser therapy produced a positive effect on microcirculation and reduced the potential of relapses.
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October 1984
Vestn Otorinolaringol
April 1984
Vestn Otorinolaringol
November 1983
Examination was conducted of 180 healthy males 35 to 44 years of age, working as leading engineers, and of 174 patients with ischemic heart disease selected according to sex and occupation. A comparative analysis was made of the frequency of the main risk factors and some peculiarities of the labour activity and behaviour of patients with types II and IV hyperlipoproteinemia and those with normal lipid level. It is shown that a combination of known risk factors, behaviour peculiarities and conditions of labour activity is typical of patients with type IV hyperlipoproteinemia, which may promote the development of ischemic heart disease.
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