Table 5

Comparison of histological markers between oligoarticular and polyarticular PsA

Marker

Oligoarticular PsA (n = 28)

Polyarticular PsA (n = 17)

P


Lining layer thickness

1.0 (1.0–3.0)

1.0 (1.0–2.0)

0.492

Vascularity

1.5 (0–3.0)

2.0 (0–3.0)

0.661

Polymorphonuclear cells

0 (0–3.0)

0 (0–2.5)

0.126

CD68 lining

2.0 (0–3.0)

2.0 (0–2.0)

0.478

CD68 sublining

1.5 (0–3.0)

1.0 (0–3.0)

0.845

CD163 lining

2.0 (0–3.0)

2.0 (0.5–3.0)

0.768

CD163 sublining

1.5 (0–2.5)

1 (0–2.5)

0.935

E-selectin blood vessels

0 (0–3.0)

0.25 (0–2.5)

0.594

Intracellular citrullinated proteins

0%

0%

1.000

Mab-12A

0%

0%

1.000


The Mann–Whitney U-test was used to evaluate markers scored semiquantitatively, and the χ2 test was used to evaluate markers scored as present or absent. Results are expressed as median (range), and markers evaluated as present or absent are expressed as percentage of positive results. P < 0.05 was considered statistically significant. PsA, psoriatic arthritis.

Kruithof et al. Arthritis Research & Therapy 2005 7:R569-R580   doi:10.1186/ar1698

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