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Clastogenic effect of bracken fern on human lymphocytes
Bracken fern has a lot of side effects, especially bleeding disorders, which are mainly seen in large animals. This study evaluates the effect of dietary bracken farm on chromosomes of cattle and humans.

Ingestion of bracken fern (Pteridium aquilinum v. arachnoideum) is associated with digestive tract cancer in different regions of Japan, Venezuela and Brazil.

In view of reports that dietary bracken fern causes chromosomal instability in cattle, the clastogenic effect of bracken fern was investigated, in a preliminary study, in peripheral lymphocytes obtained from habitual consumers and a control group of nonconsumers, which were carefully investigated about cancer history or family cancer history, negative in both cases, using protocols comparable to those previously described in studies in cattle raised on bracken pastures.

Cytogenetic analysis showed significant increased levels of chromosomal abnormalities, such as chromatid breaks, in cultured peripheral lymphocytes of the consumer group.
There was no correlation with subjects, gender, smoking habits or alcohol consumption, and the only correlation was with prolonged exposure to dietary bracken.

Source: Recouso, R. C., Santos, R. C. Stocco dos, Freitas, R., Santos, R. C., Freitas, A. C. de, Brunner, O., Beçak, W. & Lindsey, C. J. (2003): Clastogenic effect of bracken fern (Pteridium aquilinum v. arachnoideum) diet in peripheral lymphocytes of human consumers: preliminary data. In: Veterinary and Comparative Oncology 1 (1), 22-29.




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SMALL ANIMAL PRACTICE

Computed tomographic arthrography of the canine shoulder joint members
The aim of this retrospective, methods comparison study was to assess the diagnostic utility of computed tomographic arthrography in the assessment of various intraarticular shoulder pathologies in dogs in comparison with survey computed tomography (CT), using arthroscopic examination as the reference standard. Computed tomography, computed tomographic arthrography, and arthroscopic findings of 46 scapulohumeral joints of dogs with forelimb lameness were reviewed retrospectively.

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