Host Immune Responses to Pathogenic Fungi and Contemporary Therapeutic Strategies

Opportunistic infections such as Candida, Aspergillus, and Cryptococcus are significant contributors to illness and mortality, partic-ularly in those with compromised immune systems. The innate and adaptive immune systems collaborate to ensure host protection. Pattern recognition receptors in innate immunity are the primary line of defense. They identify fungal fragments and emit signals that induce swelling. The immune system must generate cytokines and activate immune cells to eradicate fungi. This is particularly applicable to reactions from Th1 and Th17. Fungal diseases are emerging with numerous strategies to circumvent human defenses, such as altering their morphology, developing biofilms, and concealing characteristics that elicit an immune response. These modi-fications facilitate prolonged infection persistence. The rise of antifungal resistance, caused by genetic mutations, efflux pumps, and biofilm-associated protection, has diminished the efficacy of conventional antifungal medicines. This review delineates the host immune system's response to fungal infections and examines the primary mechanisms of antifungal resistance. It also discusses novel approaches to treatment, such as combination therapy and immunomodulatory techniques, aimed at enhancing the immune system and improving treatment efficacy. To enhance the efficacy and specificity of antifungal therapies, it is imperative to deepen our understanding of the interactions between infections and hosts.