ArticleLupus science & medicine2025
Corneal confocal microscopy: a novel biomarker of small fibre neuropathy in SLE.
Article in Lupus science & medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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11 authors.
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Abstract
objectiveSmall fibre neuropathy (SFN) is an under-recognised complication of SLE that contributes to chronic pain and reduced quality of life. We assessed the utility of corneal confocal microscopy (CCM) for identifying small fibre damage in SLE in relation to disease activity, neuropathic pain and quality of life.
methodsParticipants with SLE and healthy controls underwent CCM to quantify corneal nerve fibre density (CNFD), corneal nerve branch density (CNBD), corneal nerve fibre length (CNFL), corneal nerve fibre tortuosity (CNFT), inferior whorl length (IWL), Douleur Neuropathique 4 (DN4) Score, vibration perception threshold (VPT) and sudomotor function.
resultsParticipants with SLE (n=59; age 38.6±9.6 years; mean Systemic Lupus Erythematosus Disease Activity Index Score 3.4±4.2) had significantly lower CNBD (41.5±21.3 vs 72.1±29.4 branches/mm², p=0.0001) and CNFL (18.5±4.3 vs 24.2±4.4 mm/mm², p=0.0001) but comparable CNFD (31.7±7.1 and 34.0±6.9 fibres/mm
conclusionThis study demonstrates that CCM detects peripheral neurodegeneration in patients with SLE, which relates to disease activity, sustained neuropathic pain and quality of life. CCM may serve as a rapid non-invasive neuroimaging technique to identify SFN in SLE.
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