How does Clotrimazole affect fungal cells?

• A. Inhibits ergosterol synthesis
• B. Modifies cell wall permeability
• C. Destroys fungal DNA
• D. Inhibits squalene production

Answer: (B)

Clotrimazole primarily works by inhibiting ergosterol synthesis, which is critical for maintaining the integrity and function of fungal cell membranes. Ergosterol is a key component of the fungal cell membrane, similar to cholesterol in human cells. By interfering with the synthesis of ergosterol, Clotrimazole disrupts the membrane structure, leading to increased permeability. This increased permeability results in the leakage of essential cellular ions and molecules, ultimately leading to cell death.

While modifying cell wall permeability is important in the context of antifungal activity, it is not the primary action of Clotrimazole. The mechanism of action is more specifically associated with targeting ergosterol synthesis rather than focusing on cell wall properties.

Inhibiting squalene production and destroying fungal DNA are mechanisms found in other antifungal agents, but they are not associated with the action of Clotrimazole. Thus, the correct understanding of how Clotrimazole affects fungal cells centers around its role in inhibiting the synthesis of ergosterol, leading to compromised cell membrane integrity and enhanced permeability.