PMID- 12508404 OWN - NLM STAT- MEDLINE DCOM- 20030513 LR - 20081121 IS - 0315-162X (Print) IS - 0315-162X (Linking) VI - 30 IP - 1 DP - 2003 Jan TI - Detection of interleukin 1beta (IL-1beta), IL-6, and tumor necrosis factor-alpha in skin of patients with fibromyalgia. PG - 146-50 AB - OBJECTIVE: To determine if abnormal collagen metabolism is correlated with neurogenic inflammation, a potential activator of collagen metabolism, in patients with fibromyalgia (FM). METHODS: The presence of inflammatory cytokines, interleukin (IL)-1beta, IL-6, and tumor necrosis factor (TNF)-a was investigated in skin tissues by using reverse transcription-polymerase chain reaction (RT-PCR) and immunohistochemistry. Fifty-three skin biopsies from female patients with FM (30-65 years of age) were examined and compared to skin biopsies of 10 age and sex matched healthy controls. Biopsies were obtained from the left deltoid region. Rheumatoid arthritis synovial fibroblasts and tissues were used as positive controls for the expression of cytokines. Total RNA isolated from the tissue samples were reverse transcribed (RT) by random hexamers as the primer for RT followed by PCR amplification using specific primers for IL-1beta, IL-6 or TNF-a. Expression of IL-1beta, and TNF-a protein was investigated in the skin by immunohistochemistry using specific antibodies (avidin-biotin method). RESULTS: Positive signals (RT-PCR) were detected in skin tissues of 19/50 (38%) FM patients for IL-1beta, in 14/51 FM patients (27%) for IL-6, and in 17/53 patients (32%) for TNF-a. None of the cytokines could be detected in healthy control skin. Immunoreactivity for IL-1beta and TNF-a was demonstrated in certain skin tissues of our FM patients. CONCLUSION: The detection of cytokines in FM skin indicates the presence of inflammatory foci (neurogenic inflammation) in the skin of certain patients (about 30% of FM patients), suggesting an inflammatory component in the induction of pain. This may explain the response to nonsteroidal antiinflammatory therapy in a subset of FM patients. FAU - Salemi, Souzan AU - Salemi S AD - Center of Experimental Rheumatology, Department of Rheumatology and Institute of Physical Medicine, University Hospital, Zurich, Switzerland . FAU - Rethage, Janine AU - Rethage J FAU - Wollina, Uwe AU - Wollina U FAU - Michel, Beat A AU - Michel BA FAU - Gay, Renate E AU - Gay RE FAU - Gay, Steffen AU - Gay S FAU - Sprott, Haiko AU - Sprott H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Canada TA - J Rheumatol JT - The Journal of rheumatology JID - 7501984 RN - 0 (Cytokines) RN - 0 (Interleukin-1) RN - 0 (Interleukin-6) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Adult MH - Biopsy MH - Cytokines/analysis/*genetics MH - Female MH - Fibromyalgia/immunology/pathology/*physiopathology MH - Gene Expression/immunology MH - Humans MH - Immunohistochemistry MH - Interleukin-1/analysis/genetics MH - Interleukin-6/analysis/genetics MH - Middle Aged MH - RNA, Messenger/analysis MH - Reverse Transcriptase Polymerase Chain Reaction MH - Skin/chemistry/immunology/pathology MH - Skin Physiological Phenomena/*immunology MH - Tumor Necrosis Factor-alpha/analysis/genetics EDAT- 2003/01/01 04:00 MHDA- 2003/05/14 05:00 CRDT- 2003/01/01 04:00 PHST- 2003/01/01 04:00 [pubmed] PHST- 2003/05/14 05:00 [medline] PHST- 2003/01/01 04:00 [entrez] AID - 0315162X-30-146 [pii] PST - ppublish SO - J Rheumatol. 2003 Jan;30(1):146-50.