Inflammatory cytokines IL-6 and TNF- in patients with hip fracture

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Springer London Ltd

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The SummaryMortality and remaining bedridden following the hip fracture surgery are not rare. We tried to measure the levels of inflammatory markers tumor necrosis factor-alpha (TNF-)and interleukin-6 (IL-6) following the hip fracture surgery and compare their levels with controls. We aimed to show a relationship between the levels of these markers and post-operative mortality and walking capability.IntroductionOsteoporosis is a condition, causing the hip fractures in the elderly. Hip fractures have a high rate of overall mortality up to 30% following the incident. Cytokines such as IL-6 and TNF- are suggested to play a role in bone resorption and, thus, in the etiology of osteoporosis.MethodsPlasma levels of IL-6 and TNF- were measured pre-operatively and on the first and second days after the surgery in 40 Turkish hip fracture patients. The levels of these cytokines were compared with 40 Turkish age-matched healthy controls. The levels of these cytokines were compared between the deceased and surviving patients, as well as the existence of walking capability following the surgery.ResultsSignificantly higher IL-6 levels were shown on the first and second days after the surgery (p=0.005; p=0.01, respectively). The overall death rate of our study group within the 2-year follow-up time was found to be 35%. No statistical significance was found in the means of 2-year follow-up mortality between the patients. Presence of walking capability did not differ between the patients, as well.ConclusionWe demonstrated an association between IL-6 levels and hip fracture in our study group following the surgery. We also suggest that TNF- and IL-6 levels are not related to the occurrence of death and walking capability after the surgery. However, these findings need further functional and clinical confirmation.


Anahtar Kelimeler

Hip fracture, TNF-, IL-6, Cytokines, Tumor necrosis factor-alpha, Interleukin-6


Osteoporosis International

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