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Biomedical subjects

A Borczyk

Publications and source records attributed to A Borczyk.

34 records · Page 2Linked to original sources
PubMed1991

Emergence of a virulent clone of Neisseria meningitidis serotype 2a that is associated with meningococcal group C disease in Canada.

Multilocus enzyme electrophoresis was used to characterize 378 isolates of Neisseria meningitidis serogroup C recovered during a period of an increase in group C meningococcal disease in Canada. Thirty-four enzyme electrophoretic types were found among the isolates, which were predominantly (96.0%) serotype 2a. One clone (ET 15), characterized by a rarely occurring allele for the enzyme fumarase, was responsible for a focal outbreak in Ontario followed by the spread of group C disease across the province. This clone, which occurred infrequently among strains isolated in 1986, accounted for over 65% of group C strains associated with meningococcal disease in Canada in 1990.

Bacterial Typing Techniques↗
PubMed1990

[Rhythm disorders of basic bioelectric activity of the brain in alcoholism and exposure to carbon disulfide (CS2)].

A visual and computer-assisted analysis was made of basic brain biological function in 45 EEG recordings of alpha waves alone or mostly alpha waves. The study revealed abnormal frequency of alpha waves in patients with chronic alcoholism (60%) and in people chronically exposed to carbon disulphide (73.4%). The abnormalities most probably reflect dysfunction of the CNS.

Action Potentials↗
PubMed1989

Chronic Shigella flexneri infection preceding development of acquired immunodeficiency syndrome.

Shigella sp. is known to be an important cause of diarrhea in homosexual men, although chronic infection is infrequently recognized. We describe recurrent and relapsing symptomatic infection due to Shigella flexneri in a human immunodeficiency virus-infected homosexual man subsequently developed acquired immunodeficiency syndrome. Patients with acquired immunodeficiency syndrome may be prone to developing chronic shigellosis because of impaired intestinal cell-mediated immunity.

Acquired Immunodeficiency Syndrome↗
PubMedDate not supplied

An outbreak of Campylobacter jejuni gastroenteritis linked to meltwater contamination of a municipal well.

A large outbreak of Campylobacter jujuni gastroenteritis attributed to contamination of an unchlorinated municipal water system was investigated. Unlike most previous summer outbreaks, this one began in early spring and was attributed to meltwater entering one or more municipal wells. 241 suspected cases were documented, but retrospective information from local health care workers suggested a much larger outbreak. 45 laboratory-confirmed cases participated in a case-control study which showed a significant association between infection and amount of town water consumed. Stool specimens from 29 patients were studied with detailed serotyping by the method of Lior, with eight known serotypes and one previously unknown one identified. It is concluded that intensive surveillance of water quality during periods of spring runoff is essential, and that timely reporting of disease outbreak patterns in emergency department settings is necessary to protect the public's health.

Campylobacter Infections↗
PubMedDate not supplied

[Visual and mathematical analysis of background cerebral bioelectric activity in cases of vascular headache (a question of rhythmicity)].

The visual and mathematical analysis (computer assisted) of the background cerebral activity in patients with vasomotor headaches, including common vasomotor headaches, Horton's headache and migrainous headache showed statistically significant fluctuations of the frequency of the background cerebral bioelectric activity only in patients with migrainous headaches. Of interest was the observed evident asymmetry of the alpha rhythm frequency. This indicates that the background bioelectric cerebral activity is arrhythmic and asymmetrical in patients with migrainous headaches.

Adult↗