Frequency of chromosome aberrations in bone marrow of monkeys and their F1 after aflatoxin B1 injection

Area of Science:

• Toxicology
• Genetics
• Primate research

Background:

• Aflatoxin B1 (AFB1) is a known mycotoxin with potential health risks.
• Investigating AFB1's mutagenic effects in primates is crucial due to their physiological similarities to humans.

Purpose of the Study:

• To investigate the mutagenic effects of aflatoxin B1 (AFB1) in somatic cells of primates.
• To assess the frequency and persistence of AFB1-induced genetic damage in non-human primates.

Main Methods:

• Exposure of Macaca mulatta and Papio hamadryas monkeys to AFB1.
• Analysis of bone marrow cells for chromosome aberrations and genome mutations.
• Long-term monitoring of genetic damage over two years.
• Evaluation of transgenerational effects in offspring of exposed females.

Main Results:

• AFB1 significantly elevated the frequency of chromosome aberrations in the bone marrow of both monkey species.
• Genome mutations were also detected in AFB1-exposed primates.
• AFB1-induced chromosome aberrations persisted consistently over a two-year study period.
• An increased frequency of chromosome aberrations was observed in offspring born to mothers exposed to AFB1 during late pregnancy.

Conclusions:

• Aflatoxin B1 exhibits significant mutagenic activity in primate somatic cells.
• AFB1 exposure can lead to persistent genetic damage and potentially transgenerational effects in primates.
• These findings highlight the genotoxic risk of AFB1 in primate models, relevant to human health concerns.