scholarly journals Accelerated Prion Disease in the Absence of Interleukin-10

2004 ◽  
Vol 78 (24) ◽  
pp. 13697-13707 ◽  
Author(s):  
Alana M. Thackray ◽  
Andrew N. McKenzie ◽  
Michael A. Klein ◽  
Angus Lauder ◽  
Raymond Bujdoso
Keyword(s):  
Inflammatory Cytokines ◽  
Prion Disease ◽  
Proinflammatory Cytokines ◽  
Incubation Time ◽  
Transforming Growth Factor ◽  
Cytokine Gene Expression ◽  
Wild Type ◽  
Terminal Disease ◽  
Tnf Α ◽  
Anti Inflammatory

ABSTRACT The identity of pro- and anti-inflammatory cytokines in the neuropathogenesis of prion diseases remains undefined. Here we have investigated the role of anti-inflammatory cytokines on the progression of prion disease through the use of mice that lack interleukin-4 (IL-4), IL-10, IL-13, or both IL-4 and IL-13. Collectively our data show that among these anti-inflammatory cytokines, IL-10 plays a prominent role in the regulation of prion disease. Mice deficient in IL-10 are highly susceptible to the development of prion disease and show a markedly shortened incubation time. In addition, we have correlated cytokine gene expression in prion-inoculated IL-10−/− mice to wild-type-inoculated animals. Our experiments show that in the absence of IL-10 there is an early expression of tumor necrosis factor alpha (TNF-α). In wild-type prion-inoculated mice, the expression of TNF-α mRNA occurs at a later time point that correlates with the extended incubation time for terminal disease development in these animals compared to those that lack IL-10. Elevated levels of IL-13 mRNA are found at early time points in the central nervous system of prion-inoculated IL-10−/− mice. At terminal disease, the brains of wild-type mice inoculated with RML or ME7 are characterized by elevated levels of mRNA for the proinflammatory cytokines TNF-α and IL-1β, together with the anti-inflammatory cytokines IL-10, IL-13, and transforming growth factor beta. Our data are consistent with a role for proinflammatory cytokines in the initiation of pathology during prion disease and an attempt by anti-inflammatory cytokines to regulate the ensuing, invariably fatal pathology.

scholarly journals Plasma levels of melatonin, certain cytokines and placental growth factor at non-pharmacological correction of pineal function in pregnant women with intrauterine growth restriction

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
A. Berbets ◽  
Keyword(s):  
Immune System ◽  
Growth Factor ◽  
Pineal Gland ◽  
Pregnant Women ◽  
Inflammatory Cytokines ◽  
Proinflammatory Cytokines ◽  
Placental Growth Factor ◽  
Placental Insufficiency ◽  
Tnf Α ◽  
Anti Inflammatory

The pineal gland produces the important hormone melatonin, the level of which in the blood of pregnant women decreases in case of placental insufficiency. The effect of dysfunction of the pineal gland on the immune system of pregnant women and on the angiogenic activity of the placenta during pregnancy remains insufficiently studied. Objective: to establish the effect of our method of non-drug correction of function of pineal gland on the state of the cytokine part of the immune system and on the synthesis of placental growth factor (PlGF) in pregnant women with placental insufficiency manifesting as fetal intrauterine growth restriction (IUGR). Material and methods. 46 pregnant women with IUGR at 30-36 weeks of gestation were examined. The group was divided into two subgroups: with non-drug correction of the pineal gland function (n = 25) and without correction (n = 21). The method of correction included a set of measures of following of lighting regimen, activity and sleep for 14 days. The control group consisted of 20 women with uncomplicated pregnancy. Levels of melatonin, PlGF, TNF-α, IL-1β, IL-6, IL-4, IL-10 were determined in the venous blood by enzyme-linked immunosorbent assay. Results. It was established that the concentration of melatonin in the blood of pregnant women with IUGR was significantly reduced, as well as the concentration of PlGF (p < 0.01). Significant changes were also found in pregnant women with placental insufficiency, namely, increased concentrations of proinflammatory cytokines, such as TNF-α (p < 0.05), IL-1-β (p < 0.001) and IL-6 (p < 0.05), comparing to healthy pregnant women. Also, in the group of pregnant women with IUGR the levels of anti-inflammatory cytokines IL-4 (p <0.001) and IL-10 (p < 0.001) were elevated in comparison to the control group. After application of the developed complex of non-drug correction of pineal gland function, the concentration of melatonin in the blood of pregnant women in the subgroup of correction increased significantly, comparing to the subgroup without correction (p < 0.001), as well as the level of PlGF (p < 0.05). Also, significantly lower levels of proinflammatory cytokines TNF-α, IL-1-β and IL-6 were observed in pregnant women in the subgroup of correction (p < 0.01). Regarding anti-inflammatory cytokines, under the influence of the developed complex of measures there was a decrease in the level of IL-4 and an increase in the level of IL-10 (p < 0.01). Conclusions. When the measures, aimed at non-drug correction of function of pineal gland, are applied in pregnant women with placental insufficiency, manifested as IUGR, the following changes are observed: increased of plasma levels of melatonin and placental growth factor, decreased of levels of proinflammatory cytokines. We suggest that the pineal gland exerts its effect on the immune system through melatonin, which moderates the activity of pro- and anti-inflammatory cytokines, thereby reducing the influence of inflammation on placental tissue, what results in increasing of concentrations of placental growth factor in the blood of pregnant women.

scholarly journals Cytokines in the blood of patients with type 2 diabetes mellitus depending on the level of overweight/obesity (literature review and own data)

2021 ◽  
Vol 17 (7) ◽  
pp. 534-551
Author(s):  
K.P. Zak ◽  
V.V. Popova ◽  
V.L. Orlenko ◽  
O.V. Furmanova ◽  
N.D. Tronko
Keyword(s):  
Type 2 Diabetes ◽  
Inflammatory Cytokines ◽  
Proinflammatory Cytokines ◽  
Peripheral Blood ◽  
Control Group ◽  
Obese Women ◽  
Cytokine Network ◽  
Tnf Α ◽  
Anti Inflammatory

The paper analyzes the current literature data and the results of our own researches concerning the state of the cytokine network: pro- and anti-inflammatory cytokines (interleukin (IL) 1α, IL-1β, IL-4, IL-6, IL-10, IL-17 and tumor necrosis factor (TNF) α), α- and β-chemokines, including IL-8 and IL-16, as well as adipokines (leptin and adiponectin) in the peripheral blood of patients with type 2 diabetes (T2D) with normal and increased body weight/obesity. It has been shown that patients with T2D are cha­racterized by an increased content of proinflammatory cytokines (IL-1, IL-6, IL-17, TNFα), α- and β-chemokines in the peripheral blood, including IL-8 and IL-16, as well as leptin with a decrease in adiponectin content. In lean patients (with body mass index (BMI) < 25.5 kg/m2) compared to lean normoglycemic individuals from the control group (BMI < 25.5 kg/m2), there is a small but significant increase in IL-1β, IL-6, IL-17, TNFα and leptin, which, as BMI increases, significantly increases in severe obesity (BMI > 30.0 kg/m2), especially in obese women (BMI > 35.0 kg/m2). Similarly, an increase in proinflammatory cytokines is observed in normoglycemic people, but not as signifi­cant as in T2D. Less clear data were obtained when during determination of the anti-inflammatory cytokines IL-4 and IL-10, which is explained by a significant polymorphism of their genes, and both protective and compensatory effects on pro-inflammatory cytokine rise. In T2D patients, especially those with obesity, there is an increase in the leptin level and a decrease in the adiponectin content. The severity of the course and the percentage of mortality are closely associated with the BMI of patients. The effectiveness of the fight against an increase in the incidence of T2D should be primarily aimed at preventing obesity, and in case of already developed T2D — at reducing concomitant obesity. The analysis of the data presented also suggests that a sharp increase in the content of pro-inflammatory cytokines (so called cytokine storm) observed in patients with T2D and obesity infected with COVID-19, is a consequence of the summation and potentiation of already existing inflammatory process.

scholarly journals The Effects of New Zealand Grown Ginseng Fractions on Cytokine Production from Human Monocytic THP-1 Cells

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 1158
Author(s):  
Wei Chen ◽  
Prabhu Balan ◽  
David G. Popovich
Keyword(s):  
New Zealand ◽  
Inflammatory Cytokines ◽  
Transforming Growth Factor Beta ◽  
Inflammatory Cytokine ◽  
Transforming Growth Factor ◽  
Enzyme Linked Immunosorbent Assay ◽  
High Dose ◽  
Tnf Α ◽  
Anti Inflammatory ◽  
Pro Inflammatory Cytokines

Pro-inflammatory cytokines and anti-inflammatory cytokines are important mediators that regulate the inflammatory response in inflammation-related diseases. The aim of this study is to evaluate different New Zealand (NZ)-grown ginseng fractions on the productions of pro-inflammatory and anti-inflammatory cytokines in human monocytic THP-1 cells. Four NZ-grown ginseng fractions, including total ginseng extract (TGE), non-ginsenoside fraction extract (NGE), high-polar ginsenoside fraction extract (HPG), and less-polar ginsenoside fraction extract (LPG), were prepared and the ginsenoside compositions of extracts were analyzed by HPLC using 19 ginsenoside reference standards. The THP-1 cells were pre-treated with different concentrations of TGE, NGE, HPG, and LPG, and were then stimulated with lipopolysaccharide (LPS). The levels of pro-inflammatory cytokines, including tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β), interleukin-6 (IL-6), interleukin-8 (IL-8), and anti-inflammatory cytokines, such as interleukin-10 (IL-10), and transforming growth factor beta-1 (TGF-β1), were determined by enzyme-linked immunosorbent assay (ELISA). TGE at 400 µg/mL significantly inhibited LPS-induced TNF-α and IL-6 productions. NGE did not show any effects on inflammatory secretion except inhibited IL-6 production at a high dose. Furthermore, LPG displayed a stronger effect than HPG on inhibiting pro-inflammatory cytokine (TNF-α, IL-1β, and IL-6) productions. Particularly, 100 µg/mL LPG not only significantly inhibited the production of pro-inflammatory cytokines TNF-α, IL-1β, and IL-6, but also remarkably enhanced the production of anti-inflammatory cytokine IL-10. NZ-grown ginseng exhibited anti-inflammatory effects in vitro, which is mainly attributed to ginsenoside fractions (particularly less-polar ginsenosides) rather than non-saponin fractions.

scholarly journals Mesenchymal stromal cells of bone marrow and azathioprine in Crohn's disease therapy

2018 ◽  
Vol 90 (2) ◽  
pp. 47-52 ◽  
Author(s):  
O V Knyazev ◽  
A V Kagramanova ◽  
N A Fadeeva ◽  
A A Lishchinskaya ◽  
O N Boldyreva ◽  
...  
Keyword(s):  
Crohn’S Disease ◽  
Crohn's Disease ◽  
Inflammatory Cytokines ◽  
Mesenchymal Stromal Cells ◽  
Stromal Cells ◽  
Transforming Growth Factor ◽  
Activity Index ◽  
Tnf Α ◽  
Anti Inflammatory ◽  
Inflammatory Effect

Crohn's disease (CD) is a chronic, recurring disease of the gastrointestinal tract of unclear etiology. One of the new approaches to CD therapy is the use of the possibilities of stem cells, in particular, mesenchymal stromal cells (MSCs). Currently, the use of MSC in clinical practice for the treatment of chronic inflammatory and autoimmune diseases is being studied in patients who receive concomitant therapy with other immunomodulatory medications. Aim. To evaluate the effectiveness of MSCs therapy in patients with CD receiving azathioprine (AZA). Materials and methods. The study included 34 patients with inflammatory (luminal) form of CD. The 1st group of patients (n=15) received anti-inflammatory therapy using MSCs culture in combination with AZA. The 2nd group (n=19) received MSCs without AZA. The severity of the attack was assessed in points in accordance with the of Crohn's disease activity index (CDAI). Immunoglobulins (IgA, IgG, IgM), interleukins (IL) 1β, 4, 10, tumor necrosis factor-α (TNF-α), interferon-γ (INF-γ), transforming growth factor-1β (TGF-1β), C-reactive protein (CRP), platelets and erythrocyte sedimentation rate (ESR) at 2, 6 and 12 months from the beginning of MSCs therapy. Results. The initial mean CDAI in the 1st group was 337.6±17.1 points, in the 2nd group - 332.7±11.0 points (p=0.3). In both groups of patients there was a significant decrease in CDAI after 2 months. From the beginning of therapy MSCs: in the 1st group to 118.9±12.4 points, in the 2nd - 120.3±14.1 points (p=0.7), after 6 months - 110.3±11.1 and 114.3±11.8 points (p=0.8), respectively. After 12 months CDAI in the 1st group was 99.9±10.8 points, in the 2nd group it was 100.6±12.1 points (p=0.8). The level of IgA, IgG, IgM was significantly lower in the group of patients with a longer history of the disease and long-term ASA. After the introduction of MSC in both groups of patients with BC, there was a tendency for the growth of pro - and anti-inflammatory cytokines, with a significantly lower level of pro-inflammatory cytokines - INF-γ, TNF-α, IL-1β - in the 1st group, indicating potentiation of the immunosuppressive effect of MSCs and AZA, which provides a more pronounced anti-inflammatory effect. Conclusion. Transplantation of MSCs promotes an increase in the serum of patients with CD initially reduced concentration of IG, cytokines and restoring their balance as the onset of clinical remission. The combination with AZA has a more pronounced anti-inflammatory effect.

Evaluation of the cytokin status of women with miscarriage

2019 ◽  
pp. 59-63
Author(s):  
N. Skrypchenko ◽  
◽  
I. Vorobyova ◽  
T. Mazur ◽  
V. Tkachenko ◽  
...  
Keyword(s):  
Immune Response ◽  
Pregnant Women ◽  
Inflammatory Cytokines ◽  
Proinflammatory Cytokines ◽  
Cervical Mucus ◽  
Enzyme Analysis ◽  
Control Group ◽  
Inflammatory Reactions ◽  
Tnf Α ◽  
Anti Inflammatory

During pregnancy, a unique new equilibrium state appears between the systems of the specific and nonspecific mothers immunity. Besides, the cytokine cascade is launched, which includes proinflammatory and anti-inflammatory factors of influence. The balance between these two groups of mediators determines the nature of the course and outcome of the gestation process. The objective: to determine the role of mediators of pro-inflammatory and anti-inflammatory reactions of gestation intercourse in patients with miscarriage. Materials and methods. The main group (the first group) was made up of 153 pregnant women with miscarriage. The control group (the second group) consisted of 25 relatively healthy women with a physiological course of pregnancy and a complcated obstetric and gynecological anamnesis, with one and more physiological births in anamnesis. The concentration of cytokines IL-1 β, IL-6, IL-8, IL-10, TNF- α in the blood and their content in cervical mucus by solid-phase immune-enzyme analysis was determined. Results. Consequences of previous pregnancies having a background of inflammatory complications of genital and extragenital genesis create conditions for long-term persistence of latent infection, including in the uterine cavity and cervical canal, followed by infection of the fetus, and contribute to the development of immune imbalance during gestation, which leads to a cascade of homeostasis disorders with the development of complications of the pregnancy intercourse and perinatal pathology. Thus, the presence of clinical symptoms of the threat of premature abortion occurs in the context of an increase in the concentration of proinflammatory cytokines (IL-6, IL-8, TNF- α and IL-1 β) in serum.Reducing the concentration of IL-10 in non-pregnant women, relative to such in control group, throughout the entire pregnancy in the blood and its content in cervical mucus indicates a violation of the balance of pro– and anti-inflammatory cytokines in the direction of pro-inflammatory reactions and violation of the local immune response. Conclusions. In women with a loss in the first trimester there is a pro-inflammatory activity of the immune response, which is an important pathogenetic factor in the development of abortion in different gestational periods. Key words: miscarriage, proinflammatory cytokines, anti-inflammatory cytokines.

scholarly journals Systemic Cytokine Profiles in Strongyloides stercoralis Infection and Alterations following Treatment

2015 ◽  
Vol 84 (2) ◽  
pp. 425-431 ◽  
Author(s):  
Rajamanickam Anuradha ◽  
Saravanan Munisankar ◽  
Yukti Bhootra ◽  
Jeeva Jagannathan ◽  
Chandrakumar Dolla ◽  
...  
Keyword(s):  
Immune Response ◽  
Inflammatory Cytokines ◽  
Transforming Growth Factor ◽  
Strongyloides Stercoralis ◽  
Cytokine Profile ◽  
Content Type ◽  
Tnf Α ◽  
Ifn Γ ◽  
Anti Inflammatory ◽  
Circulating Levels

Strongyloides stercoralisis a soil-transmitted helminth organism that infects ∼50 to 100 million people worldwide. Despite its widespread prevalence, very little is known about the immune response that characterizes humanS. stercoralisinfection. To study the systemic cytokine profile characteristic ofStrongyloidesinfection, we measured the circulating levels of a large panel of pro- and anti-inflammatory cytokines in asymptomatic, infected individuals (n= 32) and compared them to those in uninfected, controls (n= 24). Infected individuals exhibited significantly lower circulating levels of proinflammatory cytokines (gamma interferon [IFN-γ], tumor necrosis factor alpha [TNF-α], and interleukin-1β [IL-1β]) and significantly higher levels of anti-inflammatory cytokines (IL-4, IL-5, IL-9, IL-10, IL-13, IL-27, IL-37, and transforming growth factor β [TGF-β]). Moreover, treatment ofStrongyloidesinfection resulted in a significant reversal of the cytokine profile, with increased levels of proinflammatory (IFN-γ, TNF-α, IL-2, IL-17A, IL-17F, IL-22, IL-23, and IL-1β) and decreased levels of anti-inflammatory (IL-4, IL-5, IL-9, IL-10, IL-13, IL-27, IL-37, and TGF-β) cytokines following treatment. Thus,S. stercoralisinfection is characterized by alterations in the levels of systemic cytokines, reflecting major alterations in the underlying immune response to this chronic helminth infection.

scholarly journals Endogenous Pro- and Anti-Inflammatory Cytokines Differentially Regulate an In Vivo Humoral Response to Streptococcus pneumoniae

2002 ◽  
Vol 70 (2) ◽  
pp. 749-761 ◽  
Author(s):  
Abdul Q. Khan ◽  
Yi Shen ◽  
Zheng-Qi Wu ◽  
Thomas A. Wynn ◽  
Clifford M. Snapper
Keyword(s):  
Streptococcus Pneumoniae ◽  
Inflammatory Cytokines ◽  
Proinflammatory Cytokines ◽  
Humoral Response ◽  
Lymphoid Cells ◽  
Primary Immunization ◽  
Tnf Α ◽  
Ifn Γ ◽  
Anti Inflammatory

ABSTRACT Proinflammatory cytokines play a critical role in innate host defense against extracellular bacteria. However, little is known regarding the effects of these cytokines on the adaptive humoral response. Mice injected with a neutralizing anti-tumor necrosis factor alpha (TNF-α) monoclonal antibody (MAb) at the time of primary immunization with intact Streptococcus pneumoniae (strain R36A) showed a substantial reduction in both the primary immunoglobulin G (IgG) response specific for the cell wall protein, pneumococcal surface protein A (PspA), as well as in the development of PspA-specific memory. In contrast, anti-TNF-α MAb injected only at the time of secondary immunization with R36A failed to alter the boosted anti-PspA response. TNF-α was required only within the first 48 to 72 h after primary immunization with R36A and was induced both by non-B and non-T cells and by lymphoid cells, within 2 to 6 h after immunization, with levels returning to normal by 24 h. Thus, the early innate release of TNF-α was critical for optimal stimulation of the subsequent adaptive humoral response to R36A. Additional proinflammatory (interleukin 1 [IL-1], IL-6, IL-12, and gamma interferon [IFN-γ]) as well as anti-inflammatory (IL-4 and IL-10) cytokines were also transiently induced. Mice genetically deficient in IL-6, IFN-γ, or IL-12 also showed a reduced IgG anti-PspA response of all IgG isotypes. In contrast, IL-4−/− and IL-10−/− mice immunized with R36A showed a significant elevation in the IgG anti-PspA response, except that there was decreased IgG1 in IL-4−/− mice. In this regard, a marked enhancement in the induction of proinflammatory cytokines was observed in the absence of IL-10, relative to controls. Ig isotype titers specific for the phosphorycholine determinant of C-polysaccharide were similarly regulated, but to a much more modest degree. These data suggest that proinflammatory and anti-inflammatory cytokines differentially regulate an in vivo protein- and polysaccharide-specific Ig response to an extracellular bacteria.

AAnti-Inflammatory Effects of Plasma Circulating Exosomes Obtained from Normal-Weight and Obese Subjects on Hepatocytes

2020 ◽  
Vol 20 ◽  
Author(s):  
Reza Afrisham ◽  
Sahar Sadegh-Nejadi ◽  
Reza Meshkani ◽  
Solaleh Emamgholipour ◽  
Molood Bagherieh ◽  
...  
Keyword(s):  
Inflammatory Cytokines ◽  
Hepg2 Cells ◽  
Human Liver ◽  
Liver Cells ◽  
Normal Weight ◽  
Protein Levels ◽  
Human Liver Cells ◽  
Tnf Α ◽  
Anti Inflammatory

Introduction: Obesity is a disorder with low-grade chronic inflammation that plays a key role in the hepatic inflammation and steatosis. Moreover, there are studies to support the role of exosomes in the cellular communications, the regulation of metabolic homeostasis and immunomodulatory activity. Accordingly, we aimed to evaluate the influence of plasma circulating exosomes derived from females with normal-weight and obesity on the secretion of inflammatory cytokines in human liver cells. Methods: Plasma circulating exosomes were isolated from four normal (N-Exo) and four obese (O-Exo) women. The exosomes were characterized and approved for CD63 expression (common exosomal protein marker) and morphology/size using the western blot and TEM methods, respectively. The exosomes were used for stimulation of HepG2 cells in vitro. After 24 h incubation, the protein levels of TNF-α,IL-6, and IL-1β were measured in the culture supernatant of HepG2 cells using the ELISA kit. Results: The protein levels of IL-6 and TNF-α in the cells treated with O-Exo and N-Exo reduced significantly in comparison with control group (P=0.039 and P<0.001 respectively), while significance differences were not found between normal and obese groups (P=0.808, and P=0.978 respectively). However, no significant differences were found between three groups in term of IL-1β levels (P=0.069). Based on the correlation analysis, the protein levels of IL-6 were positively correlated with TNF-α (r 0.978, P<0.001). Conclusion: These findings suggest that plasma circulating exosomes have probably anti-inflammatory properties independently from body mass index and may decrease the secretion of inflammatory cytokines in liver. However, further investigations in vitro and in vivo are needed to address the anti-inflammatory function of N-Exo and O-Exo in human liver cells and/or other cells.

scholarly journals Inflammatory cytokines-stimulated human muscle stem cells ameliorate ulcerative colitis via the IDO-TSG6 axis

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shengchao Zhang ◽  
Jiankai Fang ◽  
Zhanhong Liu ◽  
Pengbo Hou ◽  
Lijuan Cao ◽  
...  
Keyword(s):  
Ulcerative Colitis ◽  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Inflammatory Cytokines ◽  
Human Muscle ◽  
Enzyme Linked Immunosorbent Assay ◽  
Muscle Stem Cells ◽  
Tnf Α ◽  
Ifn Γ ◽  
Anti Inflammatory

Abstract Background Muscle stem cells (MuSCs) are absolutely required for the formation, repair, and regeneration of skeletal muscle tissue. Increasing evidence demonstrated that tissue stem cells, especially mesenchymal stem cells (MSCs), can exert therapeutic effects on various degenerative and inflammatory disorders based on their immunoregulatory properties. Human mesenchymal stem cells (hMSCs) treated with interferon-γ (IFN-γ) and tumor necrosis factor-α (TNF-α) were reported to possess anti-inflammatory functions by producing TNF-stimulated gene 6 (TSG-6). However, whether human muscle stem cells (hMuSCs) also possess TSG-6 mediated anti-inflammatory functions has not been explored. Methods The ulcerative colitis mouse model was established by subjecting mice to dextran sulfate sodium (DSS) in drinking water for 7 days. hMuSCs were pretreated with IFN-γ and TNF-α for 48 h and were then transplanted intravenously at day 2 of DSS administration. Body weights were monitored daily. Indoleamine 2,3-dioxygenase (IDO) and TSG-6 in hMuSCs were knocked down with short hairpin RNA (shRNA) and small interfering RNA (siRNA), respectively. Colon tissues were collected for length measurement and histopathological examination. The serum level of IL-6 in mice was measured by enzyme-linked immunosorbent assay (ELISA). Real-time PCR and Western blot analysis were performed to evaluate gene expression. Results hMuSCs treated with inflammatory factors significantly ameliorated inflammatory bowel disease (IBD) symptoms. IDO and TSG-6 were greatly upregulated and required for the beneficial effects of hMuSCs on IBD. Mechanistically, the tryptophan metabolites, kynurenine (KYN) or kynurenic acid (KYNA) produced by IDO, augmented the expression of TSG-6 through activating their common receptor aryl hydrocarbon receptor (AHR). Conclusion Inflammatory cytokines-treated hMuSCs can alleviate DSS-induced colitis through IDO-mediated TSG-6 production.

scholarly journals Age and Sport Intensity-Dependent Changes in Cytokines and Telomere Length in Elite Athletes

Antioxidants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1035
Author(s):  
Maha Sellami ◽  
Shamma Al-muraikhy ◽  
Hend Al-Jaber ◽  
Hadaia Al-Amri ◽  
Layla Al-Mansoori ◽  
...  
Keyword(s):  
Immune Response ◽  
Telomere Length ◽  
Inflammatory Cytokines ◽  
Elite Athletes ◽  
Age Groups ◽  
Moderate Intensity ◽  
Necrosis Factor Alpha ◽  
Blood Samples ◽  
Tnf Α ◽  
Anti Inflammatory

Background: Exercise-associated immune response plays a crucial role in the aging process. The aim of this study is to investigate the effect of sport intensity on cytokine levels, oxidative stress markers and telomere length in aging elite athletes. Methods: In this study, 80 blood samples from consenting elite athletes were collected for anti-doping analysis at an anti-doping laboratory in Italy (FMSI). Participants were divided into three groups according to their sport intensity: low-intensity skills and power sports (LI, n = 18); moderate-intensity mixed soccer players (MI, n = 31); and high-intensity endurance sports (HI, n = 31). Participants were also divided into two age groups: less than 25 (n = 45) and above 25 years old (n = 35). Serum levels of 10 pro and anti-inflammatory cytokines and two antioxidant enzymes were compared in age and sport intensity groups and telomere lengths were measured in their respective blood samples. Results: Tumor necrosis factor-alpha (TNF-α) was the only cytokine showing significantly higher concentration in older athletes, regardless of sport intensity. Interleukin (IL)-10 increased significantly in HI regardless of age group, whereas IL-6 concentration was higher in the older HI athletes. IL-8 showed a significant interaction with sport intensity in different age groups. Overall, significant positive correlations among levels of IL-6, IL-10, IL-8 and TNF-α were identified. The antioxidant catalase activity was positively correlated with levels of TNF-α. Telomere length increased significantly with sport intensity, especially in the younger group. Conclusion: HI had longer telomeres and higher levels of pro- and anti-inflammatory cytokines, suggesting less aging in HI compared to low and moderate counterparts in association with heightened immune response. Investigation of the functional significance of these associations on the health and performance of elite athletes is warranted.

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