Guideline for in vivo assessment of adherent and rolling leukocytes in human skin microvasculature via reflectance confocal videomicroscopy
- 19 August 2021
- journal article
- research article
- Published by Wiley in Microcirculation
- Vol. 28 (8), e12725
- https://doi.org/10.1111/micc.12725
Abstract
Objective To develop a guideline that reliably identifies cutaneous adherent and rolling leukocytes from mimicking scenarios via in vivo reflectance confocal videomicroscopy. Methods We used a clinical reflectance confocal microscope, the VivaScope 1500, to acquire 1522 videos of the upper dermal microcirculation from 12 healthy subjects and 60 patients after allogeneic hematopoietic cell transplantation. Blinded to clinical information, two trained raters independently counted the number of adherent and rolling leukocytes in 88 videos. Based on discrepancies in the initial assessments, we developed a guideline to identify both types of leukocyte-endothelial interactions via a modified Delphi method (without anonymity). To test the guideline’s ability to improve the inter-rater reliability, the two raters assessed the remaining 1434 videos by using the guideline. Results We demonstrate a guideline that consists of definitions, a step-by-step flowchart, and corresponding visuals of adherent and rolling leukocytes and mimicking scenarios. The guideline improved the inter-rater reliability of the manual assessment of both interactions. The intraclass correlation coefficient (ICC) of adherent leukocyte counts increased from 0.056 (95% confidence interval: 0-0.236, n=88 videos, N=10 subjects) to 0.791 (0.770-0.809, n=1434, N=67). The ICC of rolling leukocyte counts increased from 0.385 (0.191-0.550, n=88, N=10) to 0.626 (0.593-0.657, n=1434, N=67). Intra-rater ICC post-guideline was 0.953 (0.886-0.981, n=20, N=12) and 0.956 (0.894-0.983, n=20, N=12) for adherent and rolling, respectively. Conclusion The guideline aids in the manual identification of adherent and rolling leukocytes via in vivo reflectance confocal videomicroscopy.Keywords
This publication has 51 references indexed in Scilit:
- Role of In vivo reflectance confocal microscopy in determining stability in vitiligo: A preliminary studyIndian Journal of Dermatology, 2013
- Fiji: an open-source platform for biological-image analysisNature Methods, 2012
- Leukocyte rolling and adhesion both contribute to regulation of microvascular permeability to albumin via ligation of ICAM-1American Journal of Physiology-Cell Physiology, 2011
- CCR7 is involved in the migration of neutrophils to lymph nodesBlood, 2011
- Imaging leukocyte trafficking in vivo with two-photon-excited endogenous tryptophan fluorescenceOptics Express, 2010
- Getting to the site of inflammation: the leukocyte adhesion cascade updatedNature Reviews Immunology, 2007
- Intraluminal crawling of neutrophils to emigration sites: a molecularly distinct process from adhesion in the recruitment cascadeThe Journal of Experimental Medicine, 2006
- Neutrophil extravasation in rat mesenteric venules induced by the chemotactic peptide N-formyl-methionyl-luecyl-phenylalanine (fMLP), with special attention to a barrier function of the vascular basal lamina for neutrophil migrationArchives of Histology and Cytology, 2004
- Real-Time Evidence of In Vivo Leukocyte Trafficking in Human Skin by Reflectance Confocal MicroscopyJournal of Investigative Dermatology, 2001
- Leukocyte adherence in arterioles following extravascular tissue traumaMicrovascular Research, 1980