Substance | Early RA (pg/ml) | Long-standing RA (pg/ml) | P | Controls (pg/ml) |
---|---|---|---|---|
Cytokine | Â | Â | Â | Â |
   TNF-α | 8.0a | 7.0c | ns | nm |
 | (1.0–47) | (1.0–24) |  |  |
   IL-6 | 5100b | 3100d | <0.05 | ndf |
 | (4500–8000) | (1300–3900) |  |  |
   MCP-1 | 1200b | 1500d | ns | 620f |
 | (810–1800) | (1200–3000) |  |  |
Neuropeptide | Â | Â | Â | Â |
   BN/GRP | 31a | 17c | <0.05 | ndg |
 | (21–39) | (7.0–23) |  |  |
   CGRP | 580b | 450d | ns | ndf |
 | (160–1500) | (230–960) |  |  |
   NPY | 190b | 260e | ns | 180f |
 | (65–320) | (170–500) |  |  |
   SP | 48a | 58c | ns | ndg |
 | (36–80) | (42–77) |  |  |
   VIP | 150b | 300d | ns | nm |
 | (40–200) | (55–630) |  |  |