Search results for "sytokiinit"
showing 10 items of 13 documents
Association of interleukin-6 rs1800796 polymorphism with reduced cognitive performance in healthy older adults
2019
© 2018 Elsevier B.V. With increasing life expectancy, age-associated cognitive impairment is an escalating problem worldwide. Inflammation is one of the features that characterises cognitive decline and can stimulate neurodegeneration. Interleukin 6 (IL-6) is a cytokine frequently associated with a pro-inflammatory phenotype and increased levels have been associated with the pathogenesis of dementia. The rs1800796 polymorphism in the promoter region of IL-6 gene was previously shown to influence IL-6 expression and therefore we hypothesised this gene polymorphism would be associated with IL-6 plasma levels and cognitive performance of older adults. The present study investigated the associa…
Resistance training status modifies inflammatory response to explosive and hypertrophic resistance exercise bouts.
2017
The purpose of the present study was to examine the immediate and prolonged immune response in circulating cytokine and adipocytokine concentrations after two different resistance exercise bouts: hypertrophic (HYP1, 5 × 10, 80% of 1RM) and maximal explosive (POW1, 10 × 5, 60% of 1RM) resistance exercise bouts and how 12 weeks of resistance training (RT) modifies these responses (HYP2, POW2). Eight men completed the study. RE-induced interleukin-6 (IL-6), interleukin-1β (IL-1β), interleukin-1 receptor antagonist (IL-1ra), monocyte-chemoattractant protein-1 (MCP-1), leptin, resistin, and adiponectin were measured before (PRE) and immediately (POST0), 24 (POST24) and 48 (POST48) hours after RE…
The Effects of Cold Exposure on Leukocytes, Hormones and Cytokines during Acute Exercise in Humans
2014
The purpose of the study was to examine the effects of exercise on total leukocyte count and subsets, as well as hormone and cytokine responses in a thermoneutral and cold environment, with and without an individualized pre-cooling protocol inducing low-intensity shivering. Nine healthy young men participated in six experimental trials wearing shorts and t-shirts. Participants exercised for 60 min on a treadmill at low (LOW: 50% of peak VO2) and moderate (MOD: 70% VO2peak) exercise intensities in a climatic chamber set at 22°C (NT), and in 0°C (COLD) with and without a pre-exercise low-intensity shivering protocol (SHIV). Core and skin temperature, heart rate and oxygen consumption were col…
Partial Sleep Restriction Activates Immune Response-Related Gene Expression Pathways: Experimental and Epidemiological Studies in Humans
2013
Epidemiological studies have shown that short or insufficient sleep is associated with increased risk for metabolic diseases and mortality. To elucidate mechanisms behind this connection, we aimed to identify genes and pathways affected by experimentally induced, partial sleep restriction and to verify their connection to insufficient sleep at population level. The experimental design simulated sleep restriction during a working week: sleep of healthy men (N = 9) was restricted to 4 h/night for five nights. The control subjects (N = 4) spent 8 h/night in bed. Leukocyte RNA expression was analyzed at baseline, after sleep restriction, and after recovery using whole genome microarrays complem…
Inflammation status of healthy young men : initial and specific responses to resistance training
2018
Our primary aim was to study the effects of a 4-week preparatory resistance-training (RT) period followed by 12 weeks of 2 specific RT protocols (either hypertrophic-strength (HS) or strength-hypertrophy-power training) on inflammation markers and the possible relationship of the changes in abdominal fat and lean mass to the changes in inflammation status. A total of 82 healthy men were included in the study. Maximal concentric leg press strength (1-repetition maximum), total body lean mass, total body and abdominal fat mass, circulating high-sensitivity C-reactive protein, interleukin-6, interleukin-1 receptor antagonist (IL-1ra), monocyte chemoattractant protein 1 (MCP-1), and selected ad…
Iän ja hormonikorvaushoidon yhteys tulehdustekijöihin sekä kehon koostumukseen postmenopausaalisilla naisilla
2010
Vahvat ja hyvinvoivat lihakset ovat yksi tärkeimmistä ihmisen terveyttä ja hyvää elämänlaatua ylläpitävistä tekijöistä. Ihmisen ikääntyessä lihasproteiinien hajotus tehostuu johtaen lihassäikeiden pienenemiseen ja niiden määrän vähenemiseen. Tämä puolestaan johtaa lihasten massan, voiman ja toimintakyvyn heikkenemiseen. Kroonisen matalaintensiteettisen tulehduksen uskotaan olevan merkittävimpiä lihasproteiinien hajotusta lisääviä tekijöitä. Matalaintensiteettinen tulehdus on usein yhteydessä korkeaan ikään ja se ilmenee seerumin kohonneina sytokiinitasoina. Sytokiinien lisääntymiseen vaikuttavat muun muassa immuunijärjestelmän heikentyminen, oksidatiivinen stressi ja rasvakudoksen lisääntym…
Rats bred for low intrinsic aerobic exercise capacity link obesity with brain inflammation and reduced structural plasticity of the hippocampus.
2021
Abstract BACKGROUND Increasing evidence shows obesity and poor metabolic health are associated with cognitive deficits, but the mechanistic connections have yet to be resolved. We studied rats selectively bred for low and high intrinsic aerobic capacity in order to test the association between low physical fitness, a genetic predisposition for obesity, and brain health. We hypothesized that low-capacity runner (LCR) rats with concurrently greater levels of adiposity would have increased hippocampal inflammation and reduced plasticity compared to the more physically fit high-capacity runner (HCR) rats. METHODS We examined markers for inflammation and brain plasticity in the hippocampi of LCR…
Inflammatory proteomics profiling for prediction of incident atrial fibrillation
2023
ObjectiveAtrial fibrillation (AF) has emerged as a common condition in older adults. Cardiovascular risk factors only explain about 50% of AF cases. Inflammatory biomarkers may help close this gap as inflammation can alter atrial electrophysiology and structure. This study aimed to determine a cytokine biomarker profile for this condition in the community using a proteomics approach.MethodsThis study uses cytokine proteomics in participants of the Finnish population-based FINRISK cohort studies 1997/2002. Risk models for 46 cytokines were developed to predict incident AF using Cox regressions. Furthermore, the association of participants’ C reactive protein (CRP) and N-terminal pro B-type n…
Anti-tumor activity of baculoviruses displaying and expressing the cancer-specific apoptosis inducing cytokine, Mda-7
2009
T cell differentiation by human parvovirus B19 non-structural protein 1 induced apoptotic bodies
2015
Uutta tietoa ihmisen immuunijärjestelmästä ja sen toiminnasta kerätään jatkuvasti. Synnynnäinen ja hankittu immunijärjestelmä toimivat yhteistyössä erilaisia patogeeneja vastaan. Dendriittisolut toimivat siltana synnynnäisen ja hankitun vastustuskyvyn välillä stimuloimalla T ja B lymfosyyttejä. Antigeenin esittely luokan II MHC molekyylin (eng. major histocompatibility complex) ja T solun reseptorin (TCR) välillä, sekä erillisen reseptorin ja ligandin tai sytokiini -signaalin välityksellä, CD4+ T solut stimuloituvat ja erilaistuvat. Erilaistuneita CD4+ T auttajasoluja (Th, eng. T helper cell) on eri alalajeja, jotka osallistuvat vaihtelevasti immuunipuolustukseen, esimerkiksi suojana erilai…