Thyroid Adenoma in Experimental Animals

PCBS AND CIRCULATING THYROID HORMONE Experimental Animals

Polychlorinated biphenyls (PCBs) are well known to reduce the concentrations of thyroid hormones in the circulation of experimental animals (Bastomsky et al., 1976; Brouwer et al., 1998). Moreover, circulating levels of PCBs have been reported to co-vary with various measures of thyroid status in humans (Koopman-Esseboom et al., 1997; Osius et al., 1999). These observations form the basis for t...

Scorpion Venom Pisoning in Experimental Animals

THYROID FOLLICULAR ADENOMA: BENIGN OR MALIGNANT?

Four patients are described in whom a follicular carcinoma developed following thyroidectomy for a benign follicular neoplasm. It is possible that the initial thyroid neoplasm was a well- differentiated follicular carcinoma which was microscopically indistinguishable from a benign adenoma. Realizing this pathologic pitfall in thyroid diagnosis, the need for meticulous examination of the pa...

Asbestosis in experimental animals.

Previous animal experiments with asbestos dusts have been almost entirely confined to chrysotile asbestos. It was, therefore, decided to investigate the effects of mill dusts from the three types of asbestos that are produced commercially in South Africa, namely chrysotile, amosite, and crocidolite. Chrysotile and amosite samples were relatively pure while in contrast the crocidolite dust was f...

Fasting and Experimental Animals, Detrimental or Positive?

While fasting has been practiced for centuries, its beneficial effects was unknown until recently. This review tries to analyze the current literature of how fasting and intermittent fasting (IF) could affect clinical pathological parameters, learning, mood and brain plasticity. The effects of different ways of fasting on metabolism and stress were also explored. Animal experiments have elucida...