Glucocorticosteroid interactions with natural toxins: a mini review

Area of Science:

• Pharmacology and Toxicology
• Endocrinology

Background:

• Adrenal glucocorticosteroids (e.g., corticosterone, cortisol) play a crucial role in modulating toxicological responses.
• Secretion of these steroids is often induced by stress or toxic challenges.
• Glucocorticoids exert broad biochemical effects, including impacts on DNA/RNA synthesis, metabolism, and immune function.

Purpose of the Study:

• To review the modulatory effects of glucocorticosteroids on toxicological responses.
• To highlight the influence of natural and synthetic glucocorticosteroids on toxin-induced toxicity.
• To emphasize the implications for understanding maximum tolerated dose (MTD) determination in animal models.

Main Methods:

• Literature review focusing on studies investigating glucocorticosteroid interactions with toxins.
• Analysis of data from rodent models examining neurotoxicity, hepatotoxicity, nephrotoxicity, and cardiotoxicity.
• Synthesis of findings on how glucocorticosteroids affect toxicity in relation to target organ, steroid type, toxin properties, and administration timing.

Main Results:

• Glucocorticosteroids demonstrably modulate the toxicological effects of various natural toxins (e.g., kainic acid, aflatoxin B1, trichothecenes).
• The impact of glucocorticosteroids can be either enhancement or protection against toxicity.
• Effects are contingent upon the specific target organ, the glucocorticosteroid used, toxin characteristics, and the temporal dynamics of co-administration.

Conclusions:

• Glucocorticosteroid modulation is a significant factor in toxicological outcomes.
• Understanding these interactions is critical for accurate risk assessment and MTD determination.
• Future research should consider the complex interplay between glucocorticosteroids and toxins across different organ systems.