Concentration of cytokines in patients with osteoarthritis of the knee and fibromyalgia.

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Concentration of cytokines in patients with osteoarthritis of the knee and fibromyalgia.

Author(s): Marta Imamura, Rosa Targino, Wu Tu Hsing, Satiko Imamura, Raymundo de Azevedo, Lucy Santos Villas-Boas, Tania Regina Tozetto-Mendoza, Fabio Marcon Alfieri, Thais Filippo, Linamara Rizzo Battistella

Publication date: 2014

Journal: Clinical Interventions in Aging

Keywords: aging, cytokines, fibromyalgia, osteoarthritis

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Abstract

Fibromyalgia and osteoarthritis may present a relationship with the concentration of cytokines. The aim of this study was to compare the serum concentrations of IL-12p70, tumor necrosis factor, IL-10, IL-6, IL-1β, and IL-8 in patients with knee osteoarthritis and fibromyalgia.

Most cited references 36

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Chronic inflammation: importance of NOD2 and NALP3 in interleukin-1beta generation.

L Ferrero-Miliani, O Nielsen, P Andersen … (2007)

Inflammation is part of the non-specific immune response that occurs in reaction to any type of bodily injury. In some disorders, the inflammatory process - which under normal conditions is self-limiting - becomes continuous and chronic inflammatory diseases might develop subsequently. Pattern recognition molecules (PRMs) represent a diverse collection of molecules responsible for sensing danger signals, and together with other immune components they are involved in the first line of defence. NALP3 and NOD2, which belong to a cytosolic subgroup of PRMs, dubbed Nod-like-receptors (NLRs), have been associated recently with inflammatory diseases, specifically Crohn's disease and Blau syndrome (NOD2) and familial cold autoinflammatory syndrome, Muckle-Wells syndrome and chronic infantile neurological cutaneous and articular syndrome (NALP3). The exact effects of the defective proteins are not fully understood, but activation of nuclear factor (NF)-kappaB, transcription, production and secretion of interleukin (IL)-1beta and activation of the inflammasome are some of the processes that might hold clues, and the present review will provide a thorough update in this area.

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Change in muscle strength explains accelerated decline of physical function in older women with high interleukin-6 serum levels.

Luigi Ferrucci, Jennifer L Balfour, Stefano Volpato … (2002)

To test whether accelerated sarcopenia in older persons with high interleukin (IL)-6 serum levels plays a role in the prospective association between inflammation and disability found in many studies. Cohort study of older women with moderate to severe disability. Six hundred twenty older women from the Women's Health and Aging Study in whom information on baseline IL-6 serum level was available. Self-report of functional status, objective measures of walking performance, and knee extensor strength were assessed at baseline and over six semiannual follow-up visits. Potential confounders were baseline age, race, body mass index, smoking, depression, and medical conditions. At baseline, women with high IL-6 were more often disabled and had lower walking speed. After adjusting for confounders, women in the highest IL-6 tertile (IL-6>3.10 pg/mL) were at higher risk of developing incident mobility disability (risk ratio (RR) = 1.50, 95% confidence interval (CI) = 1.01-2.27), disability in activities of daily living (RR = 1.41, 95% CI = 1.01-1.98), and severe limitation in walking (RR = 1.61, 95% CI = 1.09-2.38) and experienced steeper declines in walking speed (P <.001) than women in the lowest IL-6 tertile (IL-6 < or =1.78 pg/mL). Decline in knee extensor strength was also steeper, but differences across IL-6 tertiles were not significant. After adjusting for change over time in knee extensor strength, the association between high IL-6 and accelerated decline of physical function was no longer statistically significant. Older women with high IL-6 serum levels have a higher risk of developing physical disability and experience a steeper decline in walking ability than those with lower levels, which are partially explained by a parallel decline in muscle strength.

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Insurer and out-of-pocket costs of osteoarthritis in the US: evidence from national survey data.

Albert A. Rizzo, Hai Fang, Harry Kotlarz … (2009)

Osteoarthritis (OA) is a major debilitating disease affecting approximately 27 million persons in the US. Yet, the financial costs to patients and insurers remain poorly understood. The purpose of this study was to quantify by multivariate analyses the relationships between OA and annual health care expenditures borne by patients and insurers. Data from the Medical Expenditure Panel Survey (MEPS) for the years 1996-2005 were used. MEPS is a large, nationally representative US database that includes information on health care expenditures, medical conditions, health insurance status, and sociodemographic characteristics. Individual and nationally aggregated cost estimates are provided. OA was found to contribute substantially to health care expenditures. Among women, OA increased out-of-pocket (OOP) expenditures by $1,379 per annum (2007 dollars) and insurer expenditures by $4,833. Among men, OA increased OOP expenditures by $694 per annum and insurer expenditures by $4,036. Given the high prevalence of OA, the aggregate effects on health care expenditures were very large. OA raised aggregate annual medical care expenditures by $185.5 billion. Of that amount, insurer expenditures were $149.4 billion and OOP expenditures were $36.1 billion. Because of the greater prevalence of OA in women and their more intensive use of health care, total expenditures for this group accounted for $118 billion, or almost two-thirds of the total increase in health care expenditures resulting from OA. The health care cost burden associated with OA is quite large for all groups examined and is disproportionately higher for women. Although insurers bear the brunt of treatment costs for OA, the OOP costs are also substantial.