[EXPERIMENTAL MODEL AND CURRENCY OF EXPERIMENT OF DISTANT RESULTS OF LEAD EXPOSITION]

Area of Science:

• Toxicology
• Environmental Health
• Animal Research

Background:

• Lead (Pb) exposure is a significant public health concern.
• Understanding the chronic effects of low-dose lead is crucial for risk assessment.

Purpose of the Study:

• To investigate the distant results of low-dose lead (Pb(NO3)2) exposure in mongrel rats.
• To observe behavioral and physiological changes, and pathological outcomes.

Main Methods:

• 32 mongrel rats (both sexes) divided into two groups.
• Administration of lead nitrate (Pb(NO3)2) in drinking water (1.5 mg/kg and 15 mg/kg daily) for two months.
• Monitoring of behavior, physiological parameters, weight, and appearance; necropsy and histopathological analysis of deceased animals.

Main Results:

• Lead exposure led to severe health complications and mortality in rats.
• Observed causes of death included acute heart failure, septicopyemia, pneumonia, purulent pleurisy, disseminated intravascular coagulation (DIC) syndrome, and polyorganic pathology.
• A breast adenoma with cystic fibrosis was identified in one rat.

Conclusions:

• Chronic low-dose lead exposure can result in severe, multi-organ pathologies and increased mortality.
• Further histopathological and microscopic research is needed to fully elucidate the mechanisms of lead toxicity.