scholarly journals Recombinant TSG-6 protein inhibits the growth of capsule fibroblasts in frozen shoulder via suppressing the TGF-β/Smad2 signal pathway

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Zhongfan Liu ◽  
Yongrong Pei ◽  
Hao Zeng ◽  
Yibo Yang ◽  
Meng Que ◽  
...  
Keyword(s):  
Frozen Shoulder ◽  
Signal Pathway ◽  
Control Group ◽  
Blank Control Group ◽  
Tnf Α ◽  
Proliferation And Apoptosis ◽  
Primary Fibroblasts ◽  
Proliferation Ability ◽  
Tgf Β1 ◽  
Necrosis Factor

Abstract Background The tumor necrosis factor-stimulated gene-6 (TSG-6) has been confirmed to inhibit inflammation. It is now generally accepted that local inflammatory stimulation around shoulder capsule causes proliferative fibrosis. This study aims to investigate the mechanism of recombinant TSG-6 protein inhibiting the growth of capsule fibroblasts in frozen shoulder via the TGF-β/Smad2 signal pathway. Methods Human frozen shoulder capsule tissue was taken for primary and passage culture, and the 3rd generation fibroblasts from pathological frozen shoulder capsule were treated with different concentrations of recombinant TSG-6 protein, or with TGF-β1 agonist SRI-011381. Immunoconfocal analysis was used to identify the isolated fibroblasts, and MTT assay, colony formation assay, and flow cytometry were used to detect the viability, proliferation, and apoptosis rate of fibroblast. The contents of fibrosis and inflammation indexes COL1A1, TNF-α, IL-6, and IL-1β in the cell supernatant were detected using ELISA and then further examined by qRT-PCR. The expression of Bax, Bcl-2, and proteins related to TGF-β/Smad2 pathway were detected by Western Blot. Results Compared with the blank control group, fibroblasts intervened with TSG-6 (2 μg and 5 μg) showed significantly decreased viability and proliferation ability and enhanced cell apoptosis, concurrent with the reductions in Bcl-2 expression; COL1A1, TNF-α, IL-6, and IL-1β levels; and the expression of TGF-β1 and phosphorylated Smad22, and an increase in Bax expression, while SRI-011381 treatment would reverse the effect of recombinant TSG-6 protein. Conclusion Recombinant TSG-6 protein inhibited the growth of primary fibroblasts from human frozen shoulder capsule by suppressing the TGF-β/Smad2 signaling pathway.

scholarly journals HSP70 Induction by ING Proteins Sensitizes Cells to Tumor Necrosis Factor Alpha Receptor-Mediated Apoptosis

2006 ◽  
Vol 26 (24) ◽  
pp. 9244-9255 ◽  
Author(s):  
Xiaolan Feng ◽  
Shirin Bonni ◽  
Karl Riabowol
Keyword(s):  
Tumor Necrosis Factor ◽  
Tumor Necrosis Factor Alpha ◽  
Tumor Necrosis ◽  
Kinase Inhibitor ◽  
Heat Shock Gene ◽  
Necrosis Factor Alpha ◽  
Tnf Α ◽  
Primary Fibroblasts ◽  
Factor Alpha ◽  
Necrosis Factor

ABSTRACT ING proteins affect apoptosis, growth, and DNA repair by transducing stress signals such as DNA damage, binding histones, and subsequently regulating chromatin structure and p53 activity. p53 target genes, including the p21 cyclin-dependent kinase inhibitor and Bax, an inducer of apoptosis, are regulated by ING proteins. To identify additional targets downstream of p33ING1 and p32ING2, cDNA microarrays were performed on phenotypically normal human primary fibroblasts. The 0.36% of genes affected by ING proteins in primary fibroblasts were distinct from targets seen in established cells and included the HSP70 heat shock gene, whose promoter was specifically induced >10-fold. ING1-induced expression of HSP70 shifted cells from survival to a death pathway in response to tumor necrosis factor alpha (TNF-α), and p33ING1b protein showed synergy with TNF-α in inducing apoptosis, which correlated with reduced NF-κB-dependent transcription. These findings are consistent with previous reports that HSP70 promotes TNF-α-mediated apoptosis by binding I-κΒ kinase gamma and impairing NF-κB survival signaling. Induction of HSP70 required the amino terminus of ING1b but not the plant homeodomain region that was recently identified as a histone binding domain. Regulation of HSP70 gene expression by the ING tumor suppressors provides a novel link between the INGs and the stress-regulated NF-κB survival pathway important in hypoxia and angiogenesis.

Contributions of angiotensin II and tumor necrosis factor-α to the development of renal fibrosis

2001 ◽  
Vol 280 (5) ◽  
pp. F777-F785 ◽  
Author(s):  
Guangjie Guo ◽  
Jeremiah Morrissey ◽  
Ruth McCracken ◽  
Timothy Tolley ◽  
Helen Liapis ◽  
...  
Keyword(s):  
Angiotensin Ii ◽  
Tumor Necrosis Factor ◽  
Renal Fibrosis ◽  
Tumor Necrosis ◽  
Tumor Necrosis Factor Α ◽  
Wild Type ◽  
Tnf Α ◽  
Factor Α ◽  
Tgf Β1 ◽  
Necrosis Factor

Angiotensin II upregulates tumor necrosis factor-α (TNF-α) in the rat kidney with unilateral ureteral obstruction (UUO). In a mouse model of UUO, we found that tubulointerstitial fibrosis is blunted when the TNF-α receptor, TNFR1, is functionally knocked out. In this study, we used mutant mice with UUO in which the angiotensin II receptor AT1a or the TNF-α receptors TNFR1 and TNFR2 were knocked out to elucidate interactions between the two systems. The contribution of both systems to renal fibrosis was assessed by treating TNFR1/TNFR2-double knockout (KO) mice with an angiotensin-converting enzyme inhibitor, enalapril. The increased interstitial volume (Vvint) in the C57BI/6 wild-type mouse was decreased in the AT1a KO from 32.8 ± 4.0 to 21.0 ± 3.7% ( P < 0.005) or in the TNFR1/TNFR2 KO to 22.3 ± 2.1% ( P < 0.005). The Vvint of the TNFR1/TNFR2 KO was further decreased to 15.2 ± 3.7% ( P < 0.01) by enalapril compared with no treatment. The induction of TNF-α mRNA and transforming growth factor-β1 (TGF-β1) mRNA in the kidney with UUO was significantly blunted in the AT1a or TNFR1/TNFR2 KO mice compared with the wild-type mice. Treatment of the TNFR1/TNFR2 KO mouse with enalapril reduced both TNF-α and TGF-β1 mRNA and their proteins to near normal levels. Also, α-smooth muscle actin expression and myofibroblast proliferation were significantly inhibited in the AT1a or TNFR1/TNFR2 KO mice, and they were further inhibited in enalapril-treated TNFR1/TNFR2 KO mice. Incapacitating the angiotensin II or the TNF-α systems individually leads to partial blunting of fibrosis. Incapacitating both systems, by using a combination of genetic and pharmacological means, further inhibited interstitial fibrosis and tubule atrophy in obstructive nephropathy.

scholarly journals Pro- and Anti-Inflammatory Cytokines in the First Trimester—Comparison of Missed Miscarriage and Normal Pregnancy

2021 ◽  
Vol 18 (16) ◽  
pp. 8538
Author(s):  
Maciej Kwiatek ◽  
Tomasz Gęca ◽  
Anna Kwaśniewska
Keyword(s):  
Immune Response ◽  
Inflammatory Cytokines ◽  
First Trimester ◽  
Normal Pregnancy ◽  
Control Group ◽  
Study Group ◽  
Tnf Α ◽  
Cytokine Levels ◽  
Anti Inflammatory ◽  
Tgf Β1

The advantage in response of Th2 over Th1 is observed in normal pregnancy in peripheral blood. A disturbance of this balance can lead to symptoms of miscarriage and pregnancy loss. The aim of this study was to evaluate the pro- and anti-inflammatory cytokines in sera of women who were diagnosed with missed miscarriage in the first trimester and to compare this systemic immune response to the response in women with normal pregnancy. The study group consisted of 61 patients diagnosed with missed miscarriage. In total, 19 healthy women with uncomplicated first trimester created the control group. Cytokines were determined in the maternal serum by ELISA. The analysis included INF-γ, TNF-α, Il-1β, Il-4, Il-5, Il-6, Il-9, Il-10, Il-13 and TGF-β1. Th1 cytokine levels in the study group reached slightly higher values for INF-γ, Il-1β and slightly lower for IL-6 and TNF-α. In turn, Th2 cytokine levels in the study group were slightly higher (Il-9, Il-13), significantly higher (Il4, p = 0.015; Il-5, p = 0.0003) or showed no differences with the control group (Il-10). Slightly lower concentration involved only TGF-β1. Analysis of the correlation between levels of pro- and anti-inflammatory cytokines resulted in some discrepancies, without showing predominance of a specific immune response. The results did not confirm that women with missed miscarriage had an advantage in any type of immune response in comparison to women with normal pregnancy.

scholarly journals Effects of Qijin granules on high glucose-induced proliferation, apoptosis and expression of nuclear factor- κB and MCP-1 in rat glomerular mesangial cells

2021 ◽  
Vol 20 (9) ◽  
pp. 1819-1826
Author(s):  
Yuanfeng Yang ◽  
Gaocai Xiong ◽  
Renhui Yang ◽  
Yuchuan Li ◽  
Yuling Luo ◽  
...  
Keyword(s):  
Cell Cycle ◽  
High Glucose ◽  
Mesangial Cells ◽  
Control Group ◽  
Glomerular Mesangial Cells ◽  
Smad Signaling ◽  
Apoptosis Rate ◽  
Proliferation And Apoptosis ◽  
Protein Expressions ◽  
Tgf Β1

Purpose: To investigate the effects of Qijin granules on high glucose-induced proliferation and apoptosis in rat glomerular mesangial cells (MC).Methods: MC cells from rats were passaged and cultured, and randomly divided into control group (CNG), high glucose group (HGG), Western medicine group (WMG, high glucose + Benazepril + Gliquidone), and Qijin granules 1/2/3 group (high glucose + different doses of Qijin granules). Mesangial cells proliferation was measured using MTT assay. The NF-κB, MCP-1 and inflammatory factors in supernatant were determined by ELISA. Apoptosis rate and cell cycle were assessed by flow cytometry. The apoptosis-related TGF-β1/Smad signaling pathway-related protein expressions were measured by Western blot.Results: The A-value and early apoptosis rate, apoptosis rate and S-phase percentage, and protein expressions of NF-κB, MCP-1, IL-6, IL-2, TNF-ɑ, Bax, Cyt-C, caspase-3, TGF-β1, and p-Smad3 of MC cells in the HGG at 12 h, 24 h and 48 h were higher than those in the CNG. The above indices were lower in the WMG, and Qijin granules 1/2/3 groups than in the HGG. The Bcl-2, Smad7 protein expression level and the percentage of G1 and G2/M phase were lower in the HGG than in the CNG, and the above indeices were higher in the WMG and Qijin granules 1/2/3 group than in HGG.Conclusion: Qijin granules can dose-dependently inhibit high glucose-induced proliferation and apoptosis in rat MC cells, block the cell cycle and reduce inflammatory responses. This may be related to the regulation of NF-κB, MCP-1 and TGF-β1/Smad signaling pathways. These findings provide theoretical and experimental basis for the clinical treatment of early diabetic nephropathy.

scholarly journals EKSPRESI Tumor Necrosis Factor alpha (TNF-α) DAN Transforming growth factors beta (TGF-β) PADA PERIODONTITIS APIKALIS KRONIS AKIBAT INDUKSI Enterococcus faecalis PADA TIKUS WISTAR

2019 ◽  
Vol 7 (2) ◽  
pp. 66
Author(s):  
Richard Fritzgerald ◽  
Cecilia Lunardhi ◽  
Ruslan Effendy ◽  
Tamara Yuanita
Keyword(s):  
Tissue Damage ◽  
Treated Group ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Transforming Growth Factors ◽  
Necrosis Factor Alpha ◽  
Tnf Α ◽  
Factor Alpha ◽  
Necrosis Factor

Background. Root canal treatment is a main role in decreasing infection from root canal and pulp. The main cause of periapical damage mostly are bacteries. E.faecalis is a bactery that is found as an etiology of endodontic treatment failure. Cell wall of this bacteria is containing Lipoteichoic acid (LTA). LTA can penetrate into the periradicular tissue, act as endotoxin in host and cause periradicular inflammation then lead to bone destruction. LTA stimulates immunology reaction that produce Tumor Necrosis Factor alpha (TNF-α) and Transforming growth factors beta (TGF-ß). TNF-α is a main mediator and also have an important role in inflamation response otherwise TGF-ß is working as a multifunction  regulator of cell growth and differentiation during reforming and remodelling.  Purpose. The aim of this study is to know about the expression of TNF-α and TGF-ß during the periapical tissue damage due to induction of E.faecalis. Method. This study used laboratory experimental with the post test only control group design. A total of 30 male rats were randomly divided into 3 main groups, Group A (control negative) : normal tooth. Group B (control positive) : every tooth was induced only by sterile BHI-b. Group C (treated group) : every tooth  was induced by 10 μl BHI-b E.faecalis ATCC212(106 CFU). The animals were sacrificed 21 days later and prepared for histological examination of tissue damage, then we did the immunohistochemistry  followed by calculation on the light microscope. Result. The analysis revealed that the expression of TNF-α at treated group are higher than negative control and positive control but the expression of  TGF-ß at treated group are higher than the negative control group but lower than positive control. Conclusion. From this study we know that the expression of TNF-α and TGF-ß are changing during the periapical tissue damage that induced by E.faecalis.

Role of Exercise Activity in Alleviating Neuropathic Pain in Diabetes via Inhibition of the Pro-Inflammatory Signal Pathway

2018 ◽  
Vol 21 (1) ◽  
pp. 14-21 ◽  
Author(s):  
Xiao-Qiu Ma ◽  
Jing Qin ◽  
Hong-Yan Li ◽  
Xiu-Li Yan ◽  
Yong Zhao ◽  
...  
Keyword(s):  
Neuropathic Pain ◽  
Tumor Necrosis ◽  
Signal Pathway ◽  
Sensory Nerves ◽  
Glucose Levels ◽  
Tnf Α ◽  
Exercise Activity ◽  
Necrosis Factor ◽  
Pro Inflammatory Cytokines

Hyperalgesia and allodynia are commonly observed in patients with diabetic neuropathy. The treatment and management of painful peripheral neuropathy is important in these patients. The purpose of this study was to examine the role of exercise in modulating neuropathic pain induced by diabetes. Diabetes was induced in rats by an intraperitoneal injection of streptozotocin (STZ). Control rats received saline injections. Groups included control rats without exercise (NT-control, n = 12), control rats with exercise (EX-control, n = 16), STZ rats without exercise (NT-STZ, n = 18), and STZ rats with exercise (EX-STZ, n = 22). Rats in EX groups ran on a treadmill 4 days/week for 5 weeks beginning from the week of STZ administration. Mechanical hypersensitivity (mechanical paw withdrawal thresholds [PWTs]) and glucose levels were tested weekly. Then, enzyme-linked immunoassay and Western blot analysis were used to determine the levels of pro-inflammatory cytokines (PICs) and their receptors in sensory nerves. PWTs were significantly increased after 4–5 weeks of exercise in STZ rats ( p < .05 vs. NT-STZ rats). Inhibition of neuropathic pain by exercise in STZ rats was accompanied by decreases in interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α levels and downregulated expression of their receptors. Furthermore, blocking individual PIC receptors elevated PWTs to a greater degree in STZ rats ( p < .05 vs. control rats). Overall, our data suggest that exercise can play a role in improving neuropathic pain induced by STZ and that PIC signaling is a part of the mechanism involved in this effect.

l-Carnitine-induced amelioration of HFD-induced hepatic dysfunction is accompanied by a reduction in hepatic TNF-α and TGF-β1

2018 ◽  
Vol 96 (6) ◽  
pp. 713-725 ◽  
Author(s):  
Mabrouk Attia Abd Eldaim ◽  
Fatma Mohamed Ibrahim ◽  
Saher Hassan Orabi ◽  
Azza Hassan ◽  
Hesham Saad El Sabagh
Keyword(s):  
Protein Expression ◽  
High Density Lipoprotein ◽  
Body Mass ◽  
Density Lipoprotein ◽  
Basal Diet ◽  
Serum Levels ◽  
High Density ◽  
Control Group ◽  
Tnf Α ◽  
Tgf Β1

In this study, we evaluated the possible mechanisms through which l-carnitine ameliorates the adverse effects from obesity in rats, induced with a high-fat diet (HFD). For this, 56 albino Wister rats were randomly assigned to 7 groups. The control group was fed a basal diet and injected with saline. The second group was fed the basal diet and injected with l-carnitine (200 mg/kg body mass, by intraperitoneal injection; i.p.). The third group were fed the HFD. The fourth group was fed the HFD and injected with l-carnitine (200 mg/kg body mass, i.p.) for 8 weeks. The fifth group was fed the HFD for 10 weeks. The sixth group were fed the HFD for 10 weeks and were also injected with l-carnitine (200 mg/kg body mass, i.p.) during the final 2 weeks. The seventh group was fed the HFD diet for 8 weeks then the basal diet for 2 weeks. The HFD induced significantly increased levels of hyperglycemia, lipid peroxidation, pathological changes, TNF-α and TGF-β1 protein expression in hepatic tissue, food intake, body weight gain, serum levels of total and non-high-density lipoprotein cholesterol, ketone bodies, triacylglycerol, urea, creatinine, AST, and ALT. However, the HFD diet significantly decreased serum levels of high-density lipoprotein (HDL) and hepatic levels of reduced glutathione. l-Carnitine ameliorated the effects of the HFD on the above-mentioned parameters. This study indicated that l-carnitine had protective and curative effects against HFD-induced hepatosteatosis by reducing hepatic oxidative stress and protein expression of TNF-α and TGF-β1.

The Possible Protective Effect of Selenium on Liver Dysfunction in a Rat Model of Extrahepatic Cholestasis

QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Fatma M Lebda ◽  
Sahar M El Agaty ◽  
Noha A Nassef ◽  
Marina A Aziz
Keyword(s):  
Bile Duct ◽  
Transforming Growth Factor ◽  
Group Versus ◽  
Serum Levels ◽  
Selenium Supplementation ◽  
Necrosis Factor Alpha ◽  
Tnf Α ◽  
Factor Alpha ◽  
Tgf Β1 ◽  
Necrosis Factor

Abstract Background Oxidative stress and inflammation are primarily implicated in the development and progression of liver injury during cholestasis. Selenium, a known essential antioxidant trace element, was found to provide a remarkable antioxidant and anti-inflammatory effects on various diseases. Aim This study was planned to evaluate the possible protective effect of selenium supplementation in a rat model of chronic cholestasis. Design Experimental study. Methods This study was carried out on adult male rats allocated randomly into sham, bile duct ligated (BDL), and BDL-selenium treated (BDL-Se) groups. Sodium selenite was given by gavage daily, in a dose of 100 µg/kg for 6 weeks, starting 2 weeks before the BDL. Results BDL group presented a significant increase in serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), and liver levels of malondialdehyde (MDA), tumor necrosis factor alpha (TNF-α), and transforming growth factor beta 1(TGF-β1), associated with a significant decrease in serum levels of total proteins (TP) compared to sham group . Selenium supplementation significantly lowered serum levels of AST, ALT, ALP, and liver levels of MDA, TNF-α, and TGF-β1 along with a significant increase in serum TP in BDL-Se group versus BDL rats. Histological analysis of liver showed a significant attenuation of the inflammatory score and a significant decrease in the percentage area of collagen deposition in BDL-Se group versus BDL rats. Conclusion Selenium supplementation reduces liver injury and improves liver functions in experimental cholestasis probably by its antioxidant and anti-inflammatory activities, which further alleviate the liver fibrosis. Abbreviations BDL: bile duct ligated group, BDL-Se: bile duct ligated-selenium group, MDA: malondialdehyde, TNF-α: tumour necrosis factor-alpha, TGF-β1: transforming growth factor- beta1, ROS: reactive oxygen species, mRNA: messenger RNA, IL-6: interleukin-6, BW: body weight, AST: aspartate aminotransferase, ALT: alanine aminotransferase, ALP: alkaline phosphatase, TP: total proteins, CCl4: carbon tetrachloride, GPx: glutathione peroxidase enzyme, SOD: superoxide dismutase, IL-1: interleukin-1.

Association between tumor necrosis factor-α gene-1031T/C promoter polymorphism and endometriosis in a European population

2019 ◽  
Vol 40 (2) ◽  
Author(s):  
Anastasia Drakou ◽  
Despoina Mavrogianni ◽  
Konstantinos Ntzeros ◽  
Athanasios Protopapas ◽  
Petros Drakakis ◽  
...  
Keyword(s):  
Tumor Necrosis Factor ◽  
Tumor Necrosis ◽  
Promoter Polymorphism ◽  
European Population ◽  
Pcr Analysis ◽  
Control Group ◽  
Necrosis Factor Alpha ◽  
Healthy Women ◽  
Tnf Α ◽  
Necrosis Factor

Abstract Background Tumor necrosis factor-alpha (TNF-α) is a pro-inflammatory cytokine which plays an important role in the pathogenesis of many diseases. Endometriosis is one of the most common gynecological diseases. The purpose of this study was to investigate the association of TNF-α-1031T/C polymorphism with the genetic susceptibility of endometriosis in a European population. Materials and methods In this case-control study, 51 endometriosis patients and 67 healthy control women participated. We used endometrial tissue from the patients and peripheral blood from the healthy women to extract DNA. Polymerase chain reaction (PCR) analysis and the restriction enzyme Bbs I were used to analyze the -1031 T/C polymorphism in the TNF-α gene promoter region. Statistical analysis was performed using Fisher’s exact test. We also calculated the odds ratios. Results In the group of patients, 66.7% of women were detected with the TT genotype, 33.3% with the TC genotype and 0% with the CC genotype while in the control group, 46.3% had the TT genotype, 47.8% had the TC genotype and 6% had the CC genotype. There was a significant association between the TT genotype with endometriosis (p = 0.03). There was no significant deviation from the Hardy-Weinberg equilibrium. Conclusions The TC and CC genotypes appeared more often in the healthy women than the endometriosis patients and this shows that the C allele might have a protective role in endometriosis in the Greek population. Further studies are needed to specify the role of this polymorphism in pathogenesis of endometriosis and the mechanisms that protect the patients from the disease.

The change of proinflammatory cytokine tumor necrosis factor α level in the use of meloxicam in rat model of osteoarthritis

2019 ◽  
Vol 30 (6) ◽  
Author(s):  
Junaidi Khotib ◽  
Naning Windi Utami ◽  
Maria Apriliani Gani ◽  
Chrismawan Ardianto
Keyword(s):  
Tumor Necrosis Factor ◽  
Rat Model ◽  
Tumor Necrosis ◽  
Tumor Necrosis Factor Α ◽  
Control Group ◽  
Treatment Groups ◽  
Tnf Α ◽  
Α Level ◽  
Factor Α ◽  
Necrosis Factor

Abstract Background Osteoarthritis (OA) is a chronic disease in the joints. One of the proinflammatory cytokines that is thought to have a major role in the inflammatory process, the emergence of pain, and cartilage damage in OA is tumor necrosis factor α (TNF-α). Meloxicam is a nonsteroidal anti-inflammatory drug class of drugs that is relatively selective in inhibiting the activity of cyclooxygenase 2 (COX-2) formation. This study is conducted to prove the change in TNF-α level in the use of meloxicam with model in animals suffering from OA. Methods The OA rat model was induced with sodium monoiodoacetate intra-articularly. Rats were divided into 5 groups: negative control group, positive control group, and treatment groups with various doses of meloxicam. Hyperalgesia effect was evaluated using a warm plate test, and TNF-α level was determined using enzyme-linked immunosorbent assay. Results The treatment groups that received meloxicam at a dose of 1.0, 3.0, or 10.0 mg/kg body weight (BW) did not show significant differences in rat knee joint diameter (p = 0.99), but showed a significant difference in sensitivity to heat stimulation (p = 0.02) compared to the control group. Osteoarthritis rats experienced a significant reduction in TNF-α level after being given meloxicam at a dose of 10 mg/kg BW compared with the control group. This shows that the 10 mg/kg BW of meloxicam is a potential dose in reducing the TNF-α level in OA rat models. Conclusions Based on these data, it can be concluded that the inhibition of pain and the development of OA by meloxicam in animal models may be assigned to a decreased level of TNF-α.

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