Table 1 Patients description.

From: Proteins involved in the endoplasmic reticulum stress are modulated in synovitis of osteoarthritis, chronic pyrophosphate arthropathy and rheumatoid arthritis, and correlate with the histological inflammatory score

 

OA

CPPA

RA

P value

n

9

7

8

 

Age [median (interval)]

55 (36–89)

65 (50–74)

57 (29–78)

0.3

% of woman

88% (8/9)

71% (5/7)

62% (5/8)

0.44

BMI [median (interval)]

32.2 (17.6–41.9)

24.2 (22–33)

24.4 (16.4–33.9)

0.4

K&L score [median (interval)]

3 (0–4)

2 (0–4)

0.6

Histological inflammatory score

4 (3–8)

5 (5–13)

14 (12–17)

0.0003

Anti-CCP (positive %)

0%

0%

60%

0.002

Rheumatoid factor (positive %)

0%

0%

40%

0.032

CRP (positive %)

20%

40%

90%

0.020

ESR (positive %)

10%

0%

60%

0.01

  1. Clinical and pathological characteristics of patients with osteoarthritis (OA), chronic pyrophosphate arthropathy (CPPA) or rheumatoid arthritis (RA).
  2. OA osteoarthritis, CPPA chronic pyrophosphate arthropathy, RA rheumatoid arthritis, BMI body mass index, K&L Kellgren and Lauwrence score, anti-CCP anti-cyclic citrullinated peptide, CRP C reactive protein, ESR erythrocyte sedimentation rate