Neuropeptides In Atopic Dermatitis

Abstract

Background: The literature on atopic dermatitis (AD) reveals a complex interplay of immunological, neurological, and environmental factors contributing to its pathogenesis, particularly in relation to neuropeptides and their role in the disease's symptomatology. Literature Review: The role of neuropeptides, particularly substance P (SP), is further elaborated by (Anggia Paramita et al., 2021), who links SP to the severity of AD. Their findings indicate that SP not only induces pruritus but also promotes inflammatory responses, thereby intensifying the disease's manifestations. This relationship is reinforced by the identification of the Mas-related G protein-coupled receptor-X2 (MRGPRX2) as a significant receptor for SP on mast cells, highlighting the intricate connections between neuropeptides and immune responses in AD. The examination of pruritogens by (Wong et al., 2021) further underscores the importance of NGF and brain-derived neurotrophic factor (BDNF) in the disease's progression. Elevated NGF levels contribute to hyperinnervation and enhance mast cell survival, indicating their pivotal roles in the transition from initial inflammation to chronic pruritus. This aligns with the therapeutic perspectives presented by (Bieber, 2021), who advocates for targeted interventions that address the multifaceted interactions among environmental factors, the skin microbiome, and immune responses. Conclusion: In conclusion, the literature collectively illustrates that neuropeptides, particularly substance P, along with various cytokines and immune responses, play a crucial role in the pathophysiology of atopic dermatitis. Understanding these relationships not only enhances comprehension of the disease mechanisms but also opens up new avenues for targeted therapeutic interventions aimed at alleviating symptoms and improving patient outcomes.