PMID- 37534704 OWN - NLM STAT- MEDLINE DCOM- 20230922 LR - 20230926 IS - 1097-4598 (Electronic) IS - 0148-639X (Linking) VI - 68 IP - 4 DP - 2023 Oct TI - Reliability of confocal corneal microscopy for measurement of dendritic cell density in suspected small fiber neuropathy. PG - 460-463 LID - 10.1002/mus.27948 [doi] AB - INTRODUCTION/AIMS: Dendritic cells (DCs) and their contacts with corneal nerves are described in animal models of nerve damage. Dendritic cell density (DCD) is a potential marker of immune activity in suspected small-fiber neuropathy (SFN). Here, we aim to evaluate the intra- and inter-rater reliability of DCD measurements in suspected SFN. METHODS: This retrospective study collected DCD from confocal microscopy images from the corneal sub-basal epithelium of the eye from 48 patients (mean age 49.6 +/- 12.1 y, 61% female). Two examiners, each blinded to the other's examinations and measurements, assessed DCD to evaluate inter-rater reliability. For intra-rater reliability, the first examiner performed a second measurement after 14 days. DCs were classified into two cell morphological subtypes: mature and immature. RESULTS: Test-retest reliability for total DCD showed excellent agreement, with an intraclass correlation coefficient of 0.96 and inter-rater reliability intraclass correlation coefficient of 0.77. The immature cell subtype showed excellent intra-rater reliability but lower inter-rater reliability. DISCUSSION: We found that DCD measurements in the corneal sub-basal epithelium are sufficiently reliable for consideration in clinical studies of patients with suspected SFN. CI - (c) 2023 The Authors. Muscle & Nerve published by Wiley Periodicals LLC. FAU - Idiaquez, Juan Francisco AU - Idiaquez JF AUID- ORCID: 0000-0001-9943-8835 AD - Ellen and Martin Prosserman Centre for Neuromuscular Diseases, Division of Neurology, Department of Medicine, University Health Network, University of Toronto, Toronto, Ontario, Canada. FAU - Martinez, Rodrigo AU - Martinez R AUID- ORCID: 0000-0003-1679-395X AD - Ellen and Martin Prosserman Centre for Neuromuscular Diseases, Division of Neurology, Department of Medicine, University Health Network, University of Toronto, Toronto, Ontario, Canada. FAU - Barnett-Tapia, Carolina AU - Barnett-Tapia C AUID- ORCID: 0000-0001-5546-0221 AD - Ellen and Martin Prosserman Centre for Neuromuscular Diseases, Division of Neurology, Department of Medicine, University Health Network, University of Toronto, Toronto, Ontario, Canada. FAU - Perkins, Bruce A AU - Perkins BA AD - Division of Endocrinology and Metabolism, University of Toronto, and the Leadership Sinai Centre for Diabetes, Toronto, Ontario, Canada. FAU - Bril, Vera AU - Bril V AUID- ORCID: 0000-0002-5805-4883 AD - Ellen and Martin Prosserman Centre for Neuromuscular Diseases, Division of Neurology, Department of Medicine, University Health Network, University of Toronto, Toronto, Ontario, Canada. LA - eng PT - Journal Article DEP - 20230803 PL - United States TA - Muscle Nerve JT - Muscle & nerve JID - 7803146 SB - IM MH - Humans MH - Female MH - Adult MH - Middle Aged MH - Male MH - Reproducibility of Results MH - *Small Fiber Neuropathy MH - Retrospective Studies MH - Microscopy, Confocal/methods MH - Dendritic Cells OTO - NOTNLM OT - corneal confocal microscopy OT - dendritic cell OT - polyneuropathy OT - reliability OT - small fiber neuropathy EDAT- 2023/08/03 13:09 MHDA- 2023/09/22 06:42 CRDT- 2023/08/03 07:13 PHST- 2023/07/06 00:00 [revised] PHST- 2023/01/23 00:00 [received] PHST- 2023/07/08 00:00 [accepted] PHST- 2023/09/22 06:42 [medline] PHST- 2023/08/03 13:09 [pubmed] PHST- 2023/08/03 07:13 [entrez] AID - 10.1002/mus.27948 [doi] PST - ppublish SO - Muscle Nerve. 2023 Oct;68(4):460-463. doi: 10.1002/mus.27948. Epub 2023 Aug 3.