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Biomedical subjects

E Waniewski

Publications and source records attributed to E Waniewski.

At least 19 recordsLinked to original sources
PubMed1986

[Toxicity of volatile thermal degradation products of conveyer belts studied in guinea pigs].

The toxicity to guinea pigs of the thermal degradation products of conveyor belts, preliminarily filtered through mining gas-mask container, has been tested. The smoke from rubber belts was more toxic than that from polyvinyl chloride. Addition of coal during burning decreased the toxicity of smoke. The test products caused an increase in serum aspartate and alanine aminotransferase, and pulmonary emphysema and edema. In the animals that survived the early period post intoxication, bronchopneumonia as well as pneumonia of parenchymatous type and small degeneration lesions in the liver and kidney have been found.

Air Pollutants, Occupational↗
PubMed1986

[Further studies of the toxicity of volatile thermal degradation products of conveyor belts].

Toxic effects of the thermal degradation products of polivinyl chloride and rubber conveyor belts, preliminarily filtered through modified mining gas-mask container were studied in guinea pigs. The smoke concentration was approximate to the one found in mines near the fire during minimal ventilation (0.15 m/sec.) Within 60 min. exposure the test products showed slight irritative effects and caused a moderate lung injury and small degenerative lesions in the liver and kidney. All these changes were rather reversible and did not involve any risk to the animals' lives. The modified container reduced the toxicity of the test substances much more than did the hitherto used mining gas-mask container.

Air Pollutants, Occupational↗
PubMed1985

[Toxic effect of volatile products of thermooxidizing decomposition of conveyor belts].

Toxic effects of thermo-oxidizing decomposition products of conveying belts made of PVC and rubber have been tested. The resultant smokes were passed through a protective absorber. During 14-days' post-exposure observation, an increased activity of asparagine, aminotransferase and in some animal alanine aminotransferase was found. Moderately increased pathomorphological changes were found in lungs (emphysema, oedema interstitial and bronchogenic inflammations), along with slight degenerative changes in the liver and kidneys. In the peripheral blood, increased amounts of erythrocytes and leukocytes were found.

Air Pollutants, Occupational↗
PubMed1984

Influence of peripheral vision upon vestibulo-ocular reflex suppression.

The effect of peripheral vision upon the suppression of caloric induced nystagmus has been studied in normal subjects and patients with Parkinson's disease and cerebellar lesions. In normal subjects, caloric responses in the presence of optic fixation upon a target light viewed in darkness are further suppressed by a factor of two when background illumination is introduced. In both patient groups background illumination had significantly less effect. Additionally, optokinetic and pursuit test have revealed specific abnormalities consistent with the notion of a peripheral retinal feed-back mechanism deranged by disease. These in turn appear to have particular relevance to certain visuo-vestibular disturbances characteristic of patients in both groups.

Adolescent↗