Experimental cadmium poisoning in sheep

Area of Science:

• Veterinary Pathology
• Toxicology
• Environmental Health

Background:

• Cadmium is a toxic heavy metal with known adverse health effects.
• Understanding cadmium's impact on internal organs is crucial for assessing health risks.
• Sheep serve as a relevant model for studying mammalian responses to environmental toxins.

Purpose of the Study:

• To investigate the pathomorphological effects of sublethal cadmium doses on sheep internal organs.
• To identify early histological damage in key organs following cadmium exposure.
• To characterize the specific cellular and tissue alterations induced by cadmium.

Main Methods:

• Pathomorphological investigation of internal organs in sheep.
• Administration of sublethal doses of cadmium.
• Histological examination of tissue samples from kidneys, liver, brain, cerebellum, lungs, and adrenal glands.
• Renal biopsy for early damage detection.

Main Results:

• Early histological kidney damage observed, including granular degeneration in proximal tubules and glomerular endothelial proliferation.
• Liver damage characterized by granular degeneration in hepatocytes, edema, and activated Kupffer cells.
• Cerebral and cerebellar regions showed oedematous and degenerative changes, particularly around Purkinje cells.
• Lung alterations included alveolar epithelium hyperplasia and inflammatory cell infiltration.
• Adrenal glands exhibited degenerative changes in the medulla and zona glomerulosa.

Conclusions:

• Sublethal cadmium exposure induces significant and widespread pathomorphological changes in multiple organs of sheep.
• Histological examination is effective in detecting early signs of cadmium toxicity.
• The observed organ damage highlights the potential health risks associated with environmental cadmium contamination.