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Microvascular status and skin thickness in adults with hypermobile Ehlers-Danlos syndrome: a pilot investigation.
Clinical and Experimental Rheumatology 2023 November 9
OBJECTIVES: Hypermobile Ehlers-Danlos Syndrome (hEDS) is a hereditary connective tissue disorder characterised by joint hypermobility, chronic musculoskeletal pain, and skin abnormalities and easy bruising. Morphological and functional microvascular status has not yet been studied in hEDS, and dermal thickness (DT) has been poorly investigated, therefore the aim of our study was to investigate it.
METHODS: We conducted a study to investigate microvascular morphology by nailfold videocapillaroscopy (NVC), peripheral blood perfusion (PBP) by laser speckle contrast analysis (LASCA), and DT by high-frequency skin ultrasound (22 MHz probe) in adults with hEDS compared to sex- and age-matched controls.
RESULTS: Microhaemorrhages were found more prevalent and the capillary number per linear millimetre at the nailfold was slightly higher in hEDS patients than in controls, as well as the NVC score for abnormal shaped capillaries was slightly lower (less abnormal shaped capillaries) in hEDS patients than in controls, even if this was not statistically significant. PBP was comparable between hEDS patients and controls. The DT resulted generally lower in hEDS patients than controls with significant values limited to feet and thorax (p=0.04). A statistically significant positive correlation was observed between the Beighton score and the score for microhaemorrhages (r=0.4, p=0.05), as well as between the Beighton score and DT (r≥0.5, p≤0.02) at the level of feet and thorax.
CONCLUSIONS: Our study detected in hEDS patients a normal microvascular function at rest and a suitable capillary morphology butwith increased microvascular fragility. The dermal thickness seems thinner in hEDS patients than in controls in most skin areas, with strong statistically significance at the level of feet and thorax.
METHODS: We conducted a study to investigate microvascular morphology by nailfold videocapillaroscopy (NVC), peripheral blood perfusion (PBP) by laser speckle contrast analysis (LASCA), and DT by high-frequency skin ultrasound (22 MHz probe) in adults with hEDS compared to sex- and age-matched controls.
RESULTS: Microhaemorrhages were found more prevalent and the capillary number per linear millimetre at the nailfold was slightly higher in hEDS patients than in controls, as well as the NVC score for abnormal shaped capillaries was slightly lower (less abnormal shaped capillaries) in hEDS patients than in controls, even if this was not statistically significant. PBP was comparable between hEDS patients and controls. The DT resulted generally lower in hEDS patients than controls with significant values limited to feet and thorax (p=0.04). A statistically significant positive correlation was observed between the Beighton score and the score for microhaemorrhages (r=0.4, p=0.05), as well as between the Beighton score and DT (r≥0.5, p≤0.02) at the level of feet and thorax.
CONCLUSIONS: Our study detected in hEDS patients a normal microvascular function at rest and a suitable capillary morphology butwith increased microvascular fragility. The dermal thickness seems thinner in hEDS patients than in controls in most skin areas, with strong statistically significance at the level of feet and thorax.
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