Table 2.
Comparison of nailfold videocapillaroscopy findings between anti-MDA5 antibody positive and anti-ARS antibody positive DM-ILD patients.
| Findings | Associated antibody | P | |
|---|---|---|---|
| Anti-MDA5-Ab (+) N = 10 | Anti-ARS-Ab (+) N = 17 | ||
| Enlarged capillary | 1.2 (0.33–2) | 1.5 (0.45–2.38) | 0.530 |
| Giant capillary | 0 (0–0.78) | 0 (0–0.18) | 0.369 |
| Microhemorrhage | 0.71 (0.36–1.34) | 0.25 (0–0.5) | 0.012* |
| Capillary loss | 1.56 (0.68–1.76) | 1.44 (0.63–1.78) | 0.841 |
| Capillary disorganization | 0.84 (0.44–1.28) | 0.33 (0–0.75) | 0.044* |
| Neoangiogenesis | 0.38 (0–0.87) | 0 (0–0.38) | 0.136 |
| Bushy capillary | 0.19 (0–0.37) | 0 (0–0.2) | 0.139 |
| Bizzare capillary | 0.25 (0–0.5) | 0 (0–0.23) | 0.214 |
| Cross capillary | 0.69 (0.5–1.06) | 0.75 (0.5–1.16) | 0.800 |
| Tortuous capillary | 0.55 (0.09–1.03) | 1.33 (1.06–1.65) | 0.002** |
MDA5, anti-melanoma differentiation-associated gene 5; ARS, aminoacyl-tRNA synthetase; DM, dermatomyositis; ILD, interstitial lung disease.
The laboratory markers are presented as the median (interquartile range). The P-values were estimated using Wilcoxon rank sum test. *P < 0.05, **P < 0.01.