Cytokines profile in pure neural leprosy
FRONTIERS IN IMMUNOLOGY(2023)
Abstract
IntroductionPure Neural Leprosy (PNL) is a form of this long time known disease that affects only the peripheral nervous system. Since it is a rare form of the disease, its pathophisiology is still poorly understood.ObjectiveDescribe the cytokines profile in patients with PNL.Methods30 Patients diagnosed with PNL in the Souza Araujo Outpatient Clinic and with cytokines evaluated were selected. They were evaluated by neurologists and diagnosed after a nerve biopsy. Serum levels of IL-1 beta, IL-6, IL-10, IL-17, TNF, CCL-2/MCP-1, IFN-?, CXCL-10/IP-10 and TGF-beta were evaluates at the moment of the diagnosis.ResultsNeural thickening was a common clinical finding in this groups of patients. Small and medium sensitive fibers signs and symptoms were present in 92% of the patients and motor involvement in 53%. 43% of patients presented neuropathic pain and no one had neuritis TGF-beta, IL-17, CCl-2 and IP-10. CCL-2 levels were associated with demyelinating patters and IP-10 and IL-1o were associated with axonal patterns at NCS.DiscussionPNL patients' cytokine profile appears to be different of other clinical forms of leprosy, with the presence of cytokines described in both tuberculoid and lepromatous leprosy. High levels of CCl-2 may be related to the presence of silent neuritis as well as the presence of IL-10. PNL is unique a form of leprosy, therefore, understanding its immunological profiles essential to better understand the disease itself.
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Key words
pure neural leprosy,leprosy neuropathy,cytokine profile,leprosy reactions,leprosy nerve conduction studies
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