Solid Phase enzyme-linked Immunosorbent assay（ELISA） for detectingclass-specific rheumatoid factor （RF） was established.Aggregated rabbit lgG was used ascoating antigen and the presence of RF was demonstrated by F...Solid Phase enzyme-linked Immunosorbent assay（ELISA） for detectingclass-specific rheumatoid factor （RF） was established.Aggregated rabbit lgG was used ascoating antigen and the presence of RF was demonstrated by F（ab’）<sub>2</sub> fragment of anti-humanIg conjugated to horseradish peroxidase（HRP）.The results showed that high levels ofIgM-RF,IgG-RF and IgA-RF were found in patients with rheumatoid arthritis.A positive cor-relation existed between IgM-,IgG-,IgA-RF and disease activity.The presence of vasculitis al-so correlated positively with the levels of 3 class-specific RFs.展开更多
The aim of this study is to assess the variations of the RF and ACCP in RA patients treated with biologics in actual clinical practice (real) conditions for a one-year follow-up from the first biologic medication. The...The aim of this study is to assess the variations of the RF and ACCP in RA patients treated with biologics in actual clinical practice (real) conditions for a one-year follow-up from the first biologic medication. The evaluated patients with a diagnosis of RA, according to the American College of Rheumatology (ACR) 1987 were selected from the outpatient consult of Rheumatology of the “Hospital de Sant Pau” during one month (November 2012). We collected and analyzed data from 41 patients with RA and positivity for RF and/or ACCP. Of the 41 patients had given FR and ACCP at 3, 6 and 12 months respectively in 18 and 10 patients. In 22 patients had given DAS 28 at 3, 6 and 12 months respectively. The mean age of the sample is 55 years (range 29-79), with a mean disease progression 9 years (4 months to 32 years). 70% are women. 33 patients (80.5%) initiated treatment with anti-TNF and 8 (19.5%) with other no anti-TNF mechanism of action. There was a statistically significant (p = 0.001, ANOVA) decrease in DAS 28 (average decrease of 1.6 points) at 3 months is maintained at 6 and 12 m and no significant differences in their evolution by separating anti-TNF drugs vs. other biological agents (different mechanisms of action (p = 0.285). So we have not detected a correlation between DAS 28 and FR or ACCP along the first 12 months of biological treatment. In our experience we did not find a correlation between DAS 28 and RF or ACCP, thus RF and ACCP do not appear to predict the response to treatment.展开更多
Background:Studies have shown that individuals who receive early treatment for rheumatoid arthritis(RA)are more likely to approach life positively,avoiding joint damage and the need for joint replacement surgery.The d...Background:Studies have shown that individuals who receive early treatment for rheumatoid arthritis(RA)are more likely to approach life positively,avoiding joint damage and the need for joint replacement surgery.The diagnosis of early rheumatoid arthritis(ERA)is crucial for effective treatment and prognosis of patients.Urine,as a diagnostic medium,offers the advantages of non-invasive diagnosis.Urinary metabolites can serve as biomarkers for diagnosis,prognosis,and risk prediction,improving specificity and accuracy.Methods:We recruited 37 ERA patients with a history of less than 3 months and a score of 6,26 osteoarthritis(OA)patients,and 30 healthy controls(HC).Urine samples were collected for 16S rRNA sequencing,and untargeted liquid chromatography-mass spectrometry(LC-MS)was used to detect metabolites.Bioinformatics approaches were employed to identify pathogenic metabolites as specific risk factors for ERA precisely.Results:2-methylnaphthalene was identified as a biomarker for ERA in urine.Prevotella,a major part of the urinary microbiome in ERA patients,exhibited a positive correlation with 2-methylnaphthalene.Notably,there were significant variations in urine metabolites among patients with ERA,OA,and HC.2-Methylnaphthalene was found to be significantly enriched in ERA.Besides,inflammatory factors were elevated in ERA patients.The research further demonstrated a positive correlation between rheumatoid factor(RF),erythrocyte sedimentation rate(ESR),and C-reactive protein(CRP)and the metabolite 2-methylnaphthalene.Conclusion:The urine metabolite 2-methylnaphthalene can be a risk factor for early urinary tract infections and may contribute to accurately screening early-risk metabolites in ERA.展开更多
Chemokine-like factor 1（CKLF1） is a newly cloned chemotactic cytokine with CCR4 being its functional receptor. Recent evidence demonstrates a role of CKLF1 in arthritis. The aim of this study was to quantify the exp...Chemokine-like factor 1（CKLF1） is a newly cloned chemotactic cytokine with CCR4 being its functional receptor. Recent evidence demonstrates a role of CKLF1 in arthritis. The aim of this study was to quantify the expression of CKLF1 as well as assess the correlation between CKLF1 and plasma acute-phase markers. Synovium was obtained from 16 osteoarthritis（OA）, 15 rheumatoid arthritis（RA） and 10 ankylosing spondylitis（AS） patients undergoing total joint arthroplasty, with other 11 patients treated for meniscal tears during sport accidents serving as normal controls. Levels of CKLF1 and CCR4 m RNA were detected by q RT-PCR, and the expression of CKLF1 was investigated by immunohistochemistry staining, subsequently analyzed with semiquantitative scores. Plasma acute-phase markers of inflammation were determined by ELISA. CKLF1 was found with a particularly up-regulated expression in synovim from AS and RA patients, and CCR4 m RNA levels increased in RA patients, not in OA or AS patients. Elevated levels of plasma markers of inflammation including CRP, ESR and Ddimer were observed in RA. Further, significantly positive correlations between relative expression levels of CKLF1 and CRP/ESR in RA patients and a positive correlation between CKLF1 and ESR in AS patients were found. There was no detectable correlation between CKLF1 and plasma D-dimer. This study confirms an increased but different level of CKLF1 in RA, OA and AS patients, all significantly higher than that in controls. Additionally, the significant positive correlations between CKLF1 levels and CRP/ESR in RA and between CKLF1 and ESR suggest that CKLF1 might contribute to the inflammation state and clinical symptoms in these rheumatic diseases. Further studies are required to investigate the utility of targeting specific CKLF1 for symptom control or disease modification in RA and AS.展开更多
AIM To determine the scope of acute hypoglycemic effects for certain anti-rheumatic medications in a large retrospective observational study. METHODS Patients enrolled in the Veterans Affairs Rheumatoid Arthritis (VAR...AIM To determine the scope of acute hypoglycemic effects for certain anti-rheumatic medications in a large retrospective observational study. METHODS Patients enrolled in the Veterans Affairs Rheumatoid Arthritis (VARA) registry were selected who, during follow-up, initiated treatment with tumor necrosis factor inhibitors (TNFi's, including etanercept, adalimumab, infliximab, golimumab, or certolizumab), prednisone, or conventional disease-modifying anti-rheumatic drugs(DMARDs), and for whom proximate random blood glucose (RBG) measurements were available within a window 2-wk prior to, and 6 mo following, medication initiation. Similar data were obtained for patients with proximate values available for glycosylated hemoglobin A1C values within a window 2 mo preceding, and 12 mo following, medication initiation. RBG and A1C measurements were compared before and after initiation events using paired t-tests, and multivariate regression analysis was performed including established comorbidities and demographics.RESULTS Two thousands one hundred and eleven patients contributed at least one proximate measurement surrounding the initiation of any examined medication. A significant decrease in RBG was noted surrounding 653 individual hydroxychloroquine-initiation events(-3.68 mg/dL, P = 0.04), while an increase was noted for RBG surrounding 665 prednisone-initiation events(+5.85 mg/d L, P < 0.01). A statistically significant decrease in A1C was noted for sulfasalazine initiation, as measured by 49 individual initiation events(-0.70%, P < 0.01). Multivariate regression analyses, using methotrexate as the referent, suggest sulfasalazine (β =-0.58, P = 0.01) and hydroxychloroquine(β =-5.78, P = 0.01) use as predictors of lower post-medicationinitiation RBG and A1C values, respectively. Analysis by drug class suggested prednisone (or glucocorticoids) as predictive of higher medication-initiation event RBG among all start events as compared to DMARDs, while this analysis did not show any drug class-level effect for TNFi. A diagnosis of congestive heart failure(β = 4.69, P = 0.03) was predictive for higher post-initiation RBG values among all medication-initiation events.CONCLUSION No statistically significant hypoglycemic effects surrounding TNFi initiation were observed in this large cohort. Sulfasalazine and hydroxychloroquine may have epidemiologically significant acute hypoglycemic effects.展开更多
In this historical cohort study, 236 patients with primary rheumatoid arthritis were treated with the tumor necrosis factor inhibitors, etanercept or infliximab （n = 80）, or by conventional methods （n = 156）. Resu...In this historical cohort study, 236 patients with primary rheumatoid arthritis were treated with the tumor necrosis factor inhibitors, etanercept or infliximab （n = 80）, or by conventional methods （n = 156）. Results revealed that 11 patients developed varying types of peripheral neuropathy at 1-2 years post-treatment （mean 16 months）. The incidence of peripheral neuropathy in the tumor necrosis factor inhibitors treatment group was 8.8% （7/80）, which was significantly higher than the conventional treatment group （2.6%; 4/156）. The relative risk of developing peripheral neuropathy in the tumor necrosis factor inhibitors treatment group was 3.41 （95% confidence interval： 1.03 11.31）. Comparison of the tumor necrosis factor inhibitors revealed that etanercept and infliximab had no significant difference in terms of inducing peripheral neuropathy. Experimental findings indicate that tumor necrosis factor inhibitors may increase the risk of peripheral neuropathy.展开更多
The pathogenesis of rheumatoid arthritis(RA) remains to be completely elucidated so far; however, it is known that proinflammatory cytokines play a pivotal role in the induction of RA. Tumor necrosis factor(TNF-α), i...The pathogenesis of rheumatoid arthritis(RA) remains to be completely elucidated so far; however, it is known that proinflammatory cytokines play a pivotal role in the induction of RA. Tumor necrosis factor(TNF-α), in particular, is considered to play a central role in bone destruction by mediating the abnormal activation of osteoclasts or the production of proteolytic enzymes through direct or indirect mechanisms. The use of TNF-α blocking agents has a significant impact on RA therapy. Anti-TNF-α blocking agents such as infliximab are very effective for treatment of RA, especially for the prevention of articular destruction. We have previously shown that several proteins exhibited extensive changes in their expression after amelioration of RA with infliximab treatment. Among the proteins, connective tissue growth factor(CTGF) has a significantrole for the development of RA. Herein, we review the function of CTGF in the pathogenesis of RA and discuss the possibility of a novel treatment for RA. We propose that CTGF is a potentially novel effector molecule in the pathogenesis of RA. Blocking the CTGF pathways by biological agents may have great beneficial effect in patients with RA.展开更多
Fifty-one rheumatoid arthritis (RA) patients were enrolled to assess the gene expression of tumor necrosis factor-alpha (TNF-α) by reverse transcription quantitative polymerase chain reaction (qRT-PCR) in etanercept-...Fifty-one rheumatoid arthritis (RA) patients were enrolled to assess the gene expression of tumor necrosis factor-alpha (TNF-α) by reverse transcription quantitative polymerase chain reaction (qRT-PCR) in etanercept-treated RA patients, with some emphasis on clinical and biological markers of disease. The results revealed that the ΔCt mean range in total, male and female RA patients and controls was 1.286 ± 1.226 - 4.023 ± 0.856 and the differences were not. Laboratory and clinical findings in subgroups of patients also showed no significant variations in the distribution of 2-ΔΔCt means, with the exception of anti-cyclic citrullinated peptide (ACCP) antibodies. The lowest expression was observed in moderate positive patients (1.566 ± 1.104) compared to low and high positive patients (4.061 ± 1.366 and 9.668 ± 3.518, respectively) for ACCP antibodies, and the difference was significant (p = 0.043). Inspecting the 2-ΔΔCt means in duration of disease and gender revealed that male patients recorded a lower mean than female patients (0.827 ± 0.550 vs. 4.143 ± 1.317) at 10 years duration of disease, female patients showed a lower mean than male patients (1.242 ± 0.372 vs. 5.607 ± 3.334). However, both differences were not significant. It is concluded that etanercept was effective in normalizing the TNF gene expression, but variations that were related to gender, duration of disease and some biological markers of disease, were observed.展开更多
AIM:To investigate adherence rates in tumor necrosis factor-α (TNF-α)-inhibitors in Crohn's disease (CD) and rheumatoid arthritis (RA) by systematic review of medical literature. METHODS:A structured search of P...AIM:To investigate adherence rates in tumor necrosis factor-α (TNF-α)-inhibitors in Crohn's disease (CD) and rheumatoid arthritis (RA) by systematic review of medical literature. METHODS:A structured search of PubMed between 2001 and 2011 was conducted to identify publications that assessed treatment with TNF-α inhibitors providing data about adherence in CD and RA. Therapeutic agents of interest where adalimumab, infliximab and etanercept, since these are most commonly used for both diseases. Studies assessing only drug survival or continuation rates were excluded. Data describing adherence with TNF-α inhibitors were extracted for each selected study. Given the large variation between definitions of measurement of adherence, the definitions as used by the authors where used in our calculations. Data were tabulated and also presented descriptively. Sample size-weighted pooled proportions of patients adherent to therapy and their 95%CI were calculated.To compare adherence between infliximab, adalimumab and etanercept, the adherence rates where graphed alongside two axes. Possible determinants of adherence were extracted from the selected studies and tabulated using the presented OR. RESULTS:Three studies on CD and three on RA were identified, involving a total of 8147 patients (953 CD and 7194 RA). We identified considerable variation in the definitions and methodologies of measuring adherence between studies. The calculated overall sample size-weighted pooled proportion for adherence to TNF-α inhibitors in CD was 70% (95%CI:67%-73%) and 59% in RA (95%CI:58%-60%). In CD the adherence rate for infliximab (72%) was highercompared to adalimumab (55%), with a relative risk of 1.61 (95%CI:1.27-2.03), whereas in RA adherence for adalimumab (67%) was higher compared to both infliximab (48%) and etanercept (59%), with a relative risk of 1.41 (95%CI:1.3-1.52) and 1.13 (95%CI:1.10-1.18) respectively. In comparative studies in RA adherence to infliximab was better than etanercept and etanercept did better than adalimumab. In three studies, the most consistent factor associated with lower adherence was female gender. Results for age, immunomodulator use and prior TNF-α inhibitors use were conflicting. CONCLUSION:One-third of both CD and RA patients treated with TNF-α inhibitors are non-adherent. Female gender was consistently identified as a negative determinant of adherence.展开更多
OBJECTIVE: To investigate the mechanism underlying anti-inflammatory and immunoregulatory effect of total glucosides of paeony(TGP) based on toll-like receptor 2(TLR2) mediated tumor necrosis factor(TNF) receptor-asso...OBJECTIVE: To investigate the mechanism underlying anti-inflammatory and immunoregulatory effect of total glucosides of paeony(TGP) based on toll-like receptor 2(TLR2) mediated tumor necrosis factor(TNF) receptor-associated factor 6(TRAF6)/nuclear factor-kappa B(NF-κB) pathway activation in rats with rheumatoid arthritis.METHODS: Adjuvant arthritis(AA) model was developed by complete freund’s adjuvant(CFA) immunization. TGP(100, 50, 25 mg/kg) and celecoxib(2.8 mg/kg) were administered by intragastric administration for 21 d. Right hind paw swelling was assessed every 2 d. After 21 d, synovial changes of the ankle were detected by histopathology. CD4+and CD8+ T cell amounts in peripheral blood were measured by flow-cytometrically. Gene and protein levels of toll-like receptor(TLR)2, TRAF6, tumor necrosis factor ligand superfamily member 6(FASLG)in the spleen were assessed by RT-qPCR and Western Bolt, respectively. Nuclear expression of NF-κB p65 was detected by NF-κB p65 Assay Kit.RESULTS: Paw swelling and synovium lesions were obviously aggravated in AA rats. These symptoms were significantly relieved by TGP.The ratio of CD4+/CD8+ T cell was increased in AA rats, while TGP reduced this increased ratio.Gene and protein levels of splenic TLR2, TFAR6 and FASLG, and nuclear NF-κB p65 in AA rats were significantly increased, but overtly inhibited by TGP.CONCLUSION: These findings suggest that TGP’s anti-inflammatory effect onRA in rats with CFA may be related to the downregulation of TLR2/TRAF6/NF-κB pathway and the regulation of T cell subsets.展开更多
In recent decades, several advances have been made in the management of rheumatoid arthritis (RA) both in the diagnostic field and in the therapeutic field. Unfortunately, RA remains poorly studied in black Africa. Ep...In recent decades, several advances have been made in the management of rheumatoid arthritis (RA) both in the diagnostic field and in the therapeutic field. Unfortunately, RA remains poorly studied in black Africa. Epidemiological data are rare and controversial. The estimated prevalence of RA in Africa is about 0% - 2.54%. Risk factors associated with RA must be studied by taking into account special features of black Africa such as the low tobacco consumption in certain regions, the tropical climate and the high frequency of endemic parasitic and viral infections. The initially supposed mildness of RA in black Africa is increasingly challenged. The diagnosis is often made too late because of the scarcity of rheumatologists and ignorance. Diagnostic tools are limited to the clinical data, the erythrocyte sedimentation rate and radiographs as the other tools are poorly available. In addition, there are misconceptions in African communities, responsible for loss of sight during follow-up and treatment discontinuations. This is exacerbated by the shortage of disease-modifying anti-rheumatic drugs (DMARDs) and the inability to afford them. Furthermore, biological agents are very difficult to access. Further studies are essential to better understand the characteristics of RA in black Africa. Thus, collaborations between African and Western research teams seem very important. In order to make available the DMARDs especially biological agents, pharmaceutical companies can contribute through research partnerships. Moreover, governments should provide a better place for chronic inflammatory diseases in the programs against non-communicable diseases. Finally, training must also be promoted to increase the number of specialists and the level of knowledge of other health workers.展开更多
Objective:To explore the correlation between the change of D-dimer level and rheumatoid arthritis complicated with interstitial lung disease.Methods:From January 2022 to February 2024,20 rheumatoid arthritis patients ...Objective:To explore the correlation between the change of D-dimer level and rheumatoid arthritis complicated with interstitial lung disease.Methods:From January 2022 to February 2024,20 rheumatoid arthritis patients complicated with interstitial lung disease(interstitial lung disease group),20 rheumatoid arthritis patients without interstitial lung disease(without interstitial lung disease group),and 20 healthy people(control group)in Xijing Hospital were selected for this study.The fasting venous blood of the three groups of subjects was collected and their D-dimer,C-reactive protein(CRP),rheumatoid factor(RF),and erythrocyte sedimentation rate(ESR)were detected.Subsequently,the correlation between each index and rheumatoid arthritis complicated with interstitial lung disease was analyzed.Results:The D-dimer level of the interstitial lung disease group was significantly higher than the other two groups(P<0.05).The D-dimer level of the group without interstitial lung disease was significantly higher than the control group(P<0.05).CRP levels in the interstitial lung disease group and the group without interstitial lung disease were significantly higher than those of the control group(P<0.05).The ESR and RF levels of the interstitial lung disease group were significantly higher than the other two groups(P<0.05).The levels of ESR and RF levels of the group without interstitial lung disease were significantly higher than the control group(P<0.05).Conclusion:D-dimer levels of rheumatoid arthritis patients are higher than those of healthy individuals,and those complicated with interstitial lung disease present even higher levels.This finding shows that there is a correlation between D-dimer levels and rheumatoid arthritis with interstitial lung disease,which may facilitate the evaluation and diagnosis of this disease.展开更多
Tumor necrosis factor alpha (TNF-α) a cytokine has been shown to be the key player during the pathogenesis of several autoimmune inflammatory disorders (presumably sterile inflammation) including rheumatoid arthritis...Tumor necrosis factor alpha (TNF-α) a cytokine has been shown to be the key player during the pathogenesis of several autoimmune inflammatory disorders (presumably sterile inflammation) including rheumatoid arthritis (RA). Several studies have shown that TNF-α is mainly involved in the proinflammatory responses. However recent studies have reported multifunctional role of TNF-α during the development of RA. Therefore, in this article we have highlighted the distinct functions of TNF-α during pathogenesis of RA.展开更多
文摘Solid Phase enzyme-linked Immunosorbent assay（ELISA） for detectingclass-specific rheumatoid factor （RF） was established.Aggregated rabbit lgG was used ascoating antigen and the presence of RF was demonstrated by F（ab’）<sub>2</sub> fragment of anti-humanIg conjugated to horseradish peroxidase（HRP）.The results showed that high levels ofIgM-RF,IgG-RF and IgA-RF were found in patients with rheumatoid arthritis.A positive cor-relation existed between IgM-,IgG-,IgA-RF and disease activity.The presence of vasculitis al-so correlated positively with the levels of 3 class-specific RFs.
文摘The aim of this study is to assess the variations of the RF and ACCP in RA patients treated with biologics in actual clinical practice (real) conditions for a one-year follow-up from the first biologic medication. The evaluated patients with a diagnosis of RA, according to the American College of Rheumatology (ACR) 1987 were selected from the outpatient consult of Rheumatology of the “Hospital de Sant Pau” during one month (November 2012). We collected and analyzed data from 41 patients with RA and positivity for RF and/or ACCP. Of the 41 patients had given FR and ACCP at 3, 6 and 12 months respectively in 18 and 10 patients. In 22 patients had given DAS 28 at 3, 6 and 12 months respectively. The mean age of the sample is 55 years (range 29-79), with a mean disease progression 9 years (4 months to 32 years). 70% are women. 33 patients (80.5%) initiated treatment with anti-TNF and 8 (19.5%) with other no anti-TNF mechanism of action. There was a statistically significant (p = 0.001, ANOVA) decrease in DAS 28 (average decrease of 1.6 points) at 3 months is maintained at 6 and 12 m and no significant differences in their evolution by separating anti-TNF drugs vs. other biological agents (different mechanisms of action (p = 0.285). So we have not detected a correlation between DAS 28 and FR or ACCP along the first 12 months of biological treatment. In our experience we did not find a correlation between DAS 28 and RF or ACCP, thus RF and ACCP do not appear to predict the response to treatment.
基金financially supported by the Natural Science Foundation of China(No.82003766)Taishan Scholars Program(NO.tsqn202211219)+1 种基金the Key Research and Development Project of Shandong Province(No.2021ZDSYS27)Shandong Province nature fund surface project(Grant No.ZR2024MH088)。
文摘Background:Studies have shown that individuals who receive early treatment for rheumatoid arthritis(RA)are more likely to approach life positively,avoiding joint damage and the need for joint replacement surgery.The diagnosis of early rheumatoid arthritis(ERA)is crucial for effective treatment and prognosis of patients.Urine,as a diagnostic medium,offers the advantages of non-invasive diagnosis.Urinary metabolites can serve as biomarkers for diagnosis,prognosis,and risk prediction,improving specificity and accuracy.Methods:We recruited 37 ERA patients with a history of less than 3 months and a score of 6,26 osteoarthritis(OA)patients,and 30 healthy controls(HC).Urine samples were collected for 16S rRNA sequencing,and untargeted liquid chromatography-mass spectrometry(LC-MS)was used to detect metabolites.Bioinformatics approaches were employed to identify pathogenic metabolites as specific risk factors for ERA precisely.Results:2-methylnaphthalene was identified as a biomarker for ERA in urine.Prevotella,a major part of the urinary microbiome in ERA patients,exhibited a positive correlation with 2-methylnaphthalene.Notably,there were significant variations in urine metabolites among patients with ERA,OA,and HC.2-Methylnaphthalene was found to be significantly enriched in ERA.Besides,inflammatory factors were elevated in ERA patients.The research further demonstrated a positive correlation between rheumatoid factor(RF),erythrocyte sedimentation rate(ESR),and C-reactive protein(CRP)and the metabolite 2-methylnaphthalene.Conclusion:The urine metabolite 2-methylnaphthalene can be a risk factor for early urinary tract infections and may contribute to accurately screening early-risk metabolites in ERA.
基金supported by National Natural Science Foundation of China(No.81441056 and 81541134)
文摘Chemokine-like factor 1（CKLF1） is a newly cloned chemotactic cytokine with CCR4 being its functional receptor. Recent evidence demonstrates a role of CKLF1 in arthritis. The aim of this study was to quantify the expression of CKLF1 as well as assess the correlation between CKLF1 and plasma acute-phase markers. Synovium was obtained from 16 osteoarthritis（OA）, 15 rheumatoid arthritis（RA） and 10 ankylosing spondylitis（AS） patients undergoing total joint arthroplasty, with other 11 patients treated for meniscal tears during sport accidents serving as normal controls. Levels of CKLF1 and CCR4 m RNA were detected by q RT-PCR, and the expression of CKLF1 was investigated by immunohistochemistry staining, subsequently analyzed with semiquantitative scores. Plasma acute-phase markers of inflammation were determined by ELISA. CKLF1 was found with a particularly up-regulated expression in synovim from AS and RA patients, and CCR4 m RNA levels increased in RA patients, not in OA or AS patients. Elevated levels of plasma markers of inflammation including CRP, ESR and Ddimer were observed in RA. Further, significantly positive correlations between relative expression levels of CKLF1 and CRP/ESR in RA patients and a positive correlation between CKLF1 and ESR in AS patients were found. There was no detectable correlation between CKLF1 and plasma D-dimer. This study confirms an increased but different level of CKLF1 in RA, OA and AS patients, all significantly higher than that in controls. Additionally, the significant positive correlations between CKLF1 levels and CRP/ESR in RA and between CKLF1 and ESR suggest that CKLF1 might contribute to the inflammation state and clinical symptoms in these rheumatic diseases. Further studies are required to investigate the utility of targeting specific CKLF1 for symptom control or disease modification in RA and AS.
基金Supported by VA HSR&D MERIT Award IIR,No.14-048-3 for Dr Caplansupported by a VA GME Enhancement Award
文摘AIM To determine the scope of acute hypoglycemic effects for certain anti-rheumatic medications in a large retrospective observational study. METHODS Patients enrolled in the Veterans Affairs Rheumatoid Arthritis (VARA) registry were selected who, during follow-up, initiated treatment with tumor necrosis factor inhibitors (TNFi's, including etanercept, adalimumab, infliximab, golimumab, or certolizumab), prednisone, or conventional disease-modifying anti-rheumatic drugs(DMARDs), and for whom proximate random blood glucose (RBG) measurements were available within a window 2-wk prior to, and 6 mo following, medication initiation. Similar data were obtained for patients with proximate values available for glycosylated hemoglobin A1C values within a window 2 mo preceding, and 12 mo following, medication initiation. RBG and A1C measurements were compared before and after initiation events using paired t-tests, and multivariate regression analysis was performed including established comorbidities and demographics.RESULTS Two thousands one hundred and eleven patients contributed at least one proximate measurement surrounding the initiation of any examined medication. A significant decrease in RBG was noted surrounding 653 individual hydroxychloroquine-initiation events(-3.68 mg/dL, P = 0.04), while an increase was noted for RBG surrounding 665 prednisone-initiation events(+5.85 mg/d L, P < 0.01). A statistically significant decrease in A1C was noted for sulfasalazine initiation, as measured by 49 individual initiation events(-0.70%, P < 0.01). Multivariate regression analyses, using methotrexate as the referent, suggest sulfasalazine (β =-0.58, P = 0.01) and hydroxychloroquine(β =-5.78, P = 0.01) use as predictors of lower post-medicationinitiation RBG and A1C values, respectively. Analysis by drug class suggested prednisone (or glucocorticoids) as predictive of higher medication-initiation event RBG among all start events as compared to DMARDs, while this analysis did not show any drug class-level effect for TNFi. A diagnosis of congestive heart failure(β = 4.69, P = 0.03) was predictive for higher post-initiation RBG values among all medication-initiation events.CONCLUSION No statistically significant hypoglycemic effects surrounding TNFi initiation were observed in this large cohort. Sulfasalazine and hydroxychloroquine may have epidemiologically significant acute hypoglycemic effects.
基金supported by the National Natural Science Foundation of China,No. 81072450
文摘In this historical cohort study, 236 patients with primary rheumatoid arthritis were treated with the tumor necrosis factor inhibitors, etanercept or infliximab （n = 80）, or by conventional methods （n = 156）. Results revealed that 11 patients developed varying types of peripheral neuropathy at 1-2 years post-treatment （mean 16 months）. The incidence of peripheral neuropathy in the tumor necrosis factor inhibitors treatment group was 8.8% （7/80）, which was significantly higher than the conventional treatment group （2.6%; 4/156）. The relative risk of developing peripheral neuropathy in the tumor necrosis factor inhibitors treatment group was 3.41 （95% confidence interval： 1.03 11.31）. Comparison of the tumor necrosis factor inhibitors revealed that etanercept and infliximab had no significant difference in terms of inducing peripheral neuropathy. Experimental findings indicate that tumor necrosis factor inhibitors may increase the risk of peripheral neuropathy.
基金Supported by Grant-in-Aid for Scientific Research(C),The Ministry of Education,Culuture,Sports,Science and Technology and The Institute for Environment and Gender-specific Medicine,Juntendo University Graduate School of Medicine
文摘The pathogenesis of rheumatoid arthritis(RA) remains to be completely elucidated so far; however, it is known that proinflammatory cytokines play a pivotal role in the induction of RA. Tumor necrosis factor(TNF-α), in particular, is considered to play a central role in bone destruction by mediating the abnormal activation of osteoclasts or the production of proteolytic enzymes through direct or indirect mechanisms. The use of TNF-α blocking agents has a significant impact on RA therapy. Anti-TNF-α blocking agents such as infliximab are very effective for treatment of RA, especially for the prevention of articular destruction. We have previously shown that several proteins exhibited extensive changes in their expression after amelioration of RA with infliximab treatment. Among the proteins, connective tissue growth factor(CTGF) has a significantrole for the development of RA. Herein, we review the function of CTGF in the pathogenesis of RA and discuss the possibility of a novel treatment for RA. We propose that CTGF is a potentially novel effector molecule in the pathogenesis of RA. Blocking the CTGF pathways by biological agents may have great beneficial effect in patients with RA.
文摘Fifty-one rheumatoid arthritis (RA) patients were enrolled to assess the gene expression of tumor necrosis factor-alpha (TNF-α) by reverse transcription quantitative polymerase chain reaction (qRT-PCR) in etanercept-treated RA patients, with some emphasis on clinical and biological markers of disease. The results revealed that the ΔCt mean range in total, male and female RA patients and controls was 1.286 ± 1.226 - 4.023 ± 0.856 and the differences were not. Laboratory and clinical findings in subgroups of patients also showed no significant variations in the distribution of 2-ΔΔCt means, with the exception of anti-cyclic citrullinated peptide (ACCP) antibodies. The lowest expression was observed in moderate positive patients (1.566 ± 1.104) compared to low and high positive patients (4.061 ± 1.366 and 9.668 ± 3.518, respectively) for ACCP antibodies, and the difference was significant (p = 0.043). Inspecting the 2-ΔΔCt means in duration of disease and gender revealed that male patients recorded a lower mean than female patients (0.827 ± 0.550 vs. 4.143 ± 1.317) at 10 years duration of disease, female patients showed a lower mean than male patients (1.242 ± 0.372 vs. 5.607 ± 3.334). However, both differences were not significant. It is concluded that etanercept was effective in normalizing the TNF gene expression, but variations that were related to gender, duration of disease and some biological markers of disease, were observed.
文摘AIM:To investigate adherence rates in tumor necrosis factor-α (TNF-α)-inhibitors in Crohn's disease (CD) and rheumatoid arthritis (RA) by systematic review of medical literature. METHODS:A structured search of PubMed between 2001 and 2011 was conducted to identify publications that assessed treatment with TNF-α inhibitors providing data about adherence in CD and RA. Therapeutic agents of interest where adalimumab, infliximab and etanercept, since these are most commonly used for both diseases. Studies assessing only drug survival or continuation rates were excluded. Data describing adherence with TNF-α inhibitors were extracted for each selected study. Given the large variation between definitions of measurement of adherence, the definitions as used by the authors where used in our calculations. Data were tabulated and also presented descriptively. Sample size-weighted pooled proportions of patients adherent to therapy and their 95%CI were calculated.To compare adherence between infliximab, adalimumab and etanercept, the adherence rates where graphed alongside two axes. Possible determinants of adherence were extracted from the selected studies and tabulated using the presented OR. RESULTS:Three studies on CD and three on RA were identified, involving a total of 8147 patients (953 CD and 7194 RA). We identified considerable variation in the definitions and methodologies of measuring adherence between studies. The calculated overall sample size-weighted pooled proportion for adherence to TNF-α inhibitors in CD was 70% (95%CI:67%-73%) and 59% in RA (95%CI:58%-60%). In CD the adherence rate for infliximab (72%) was highercompared to adalimumab (55%), with a relative risk of 1.61 (95%CI:1.27-2.03), whereas in RA adherence for adalimumab (67%) was higher compared to both infliximab (48%) and etanercept (59%), with a relative risk of 1.41 (95%CI:1.3-1.52) and 1.13 (95%CI:1.10-1.18) respectively. In comparative studies in RA adherence to infliximab was better than etanercept and etanercept did better than adalimumab. In three studies, the most consistent factor associated with lower adherence was female gender. Results for age, immunomodulator use and prior TNF-α inhibitors use were conflicting. CONCLUSION:One-third of both CD and RA patients treated with TNF-α inhibitors are non-adherent. Female gender was consistently identified as a negative determinant of adherence.
基金Supported by Natural Science Foundation of China(No.81273900):Studies on Epigenetic Mechanisms Associated with the Classical Decoction of HanBi(Wutou Decoction)and ReBi(Baihu Plus Guizhi Decoction)Natural Science Foundation of China(No.81773972):Based on succinate/GPR91 Pathway Connected Abnormal Glucose Metabolism Exacerbates Inflammation to Investigate the"Dispelling Pyretic Arthralgia"Mechanism of Baihu Guizhi Decoction
文摘OBJECTIVE: To investigate the mechanism underlying anti-inflammatory and immunoregulatory effect of total glucosides of paeony(TGP) based on toll-like receptor 2(TLR2) mediated tumor necrosis factor(TNF) receptor-associated factor 6(TRAF6)/nuclear factor-kappa B(NF-κB) pathway activation in rats with rheumatoid arthritis.METHODS: Adjuvant arthritis(AA) model was developed by complete freund’s adjuvant(CFA) immunization. TGP(100, 50, 25 mg/kg) and celecoxib(2.8 mg/kg) were administered by intragastric administration for 21 d. Right hind paw swelling was assessed every 2 d. After 21 d, synovial changes of the ankle were detected by histopathology. CD4+and CD8+ T cell amounts in peripheral blood were measured by flow-cytometrically. Gene and protein levels of toll-like receptor(TLR)2, TRAF6, tumor necrosis factor ligand superfamily member 6(FASLG)in the spleen were assessed by RT-qPCR and Western Bolt, respectively. Nuclear expression of NF-κB p65 was detected by NF-κB p65 Assay Kit.RESULTS: Paw swelling and synovium lesions were obviously aggravated in AA rats. These symptoms were significantly relieved by TGP.The ratio of CD4+/CD8+ T cell was increased in AA rats, while TGP reduced this increased ratio.Gene and protein levels of splenic TLR2, TFAR6 and FASLG, and nuclear NF-κB p65 in AA rats were significantly increased, but overtly inhibited by TGP.CONCLUSION: These findings suggest that TGP’s anti-inflammatory effect onRA in rats with CFA may be related to the downregulation of TLR2/TRAF6/NF-κB pathway and the regulation of T cell subsets.
文摘In recent decades, several advances have been made in the management of rheumatoid arthritis (RA) both in the diagnostic field and in the therapeutic field. Unfortunately, RA remains poorly studied in black Africa. Epidemiological data are rare and controversial. The estimated prevalence of RA in Africa is about 0% - 2.54%. Risk factors associated with RA must be studied by taking into account special features of black Africa such as the low tobacco consumption in certain regions, the tropical climate and the high frequency of endemic parasitic and viral infections. The initially supposed mildness of RA in black Africa is increasingly challenged. The diagnosis is often made too late because of the scarcity of rheumatologists and ignorance. Diagnostic tools are limited to the clinical data, the erythrocyte sedimentation rate and radiographs as the other tools are poorly available. In addition, there are misconceptions in African communities, responsible for loss of sight during follow-up and treatment discontinuations. This is exacerbated by the shortage of disease-modifying anti-rheumatic drugs (DMARDs) and the inability to afford them. Furthermore, biological agents are very difficult to access. Further studies are essential to better understand the characteristics of RA in black Africa. Thus, collaborations between African and Western research teams seem very important. In order to make available the DMARDs especially biological agents, pharmaceutical companies can contribute through research partnerships. Moreover, governments should provide a better place for chronic inflammatory diseases in the programs against non-communicable diseases. Finally, training must also be promoted to increase the number of specialists and the level of knowledge of other health workers.
文摘Objective:To explore the correlation between the change of D-dimer level and rheumatoid arthritis complicated with interstitial lung disease.Methods:From January 2022 to February 2024,20 rheumatoid arthritis patients complicated with interstitial lung disease(interstitial lung disease group),20 rheumatoid arthritis patients without interstitial lung disease(without interstitial lung disease group),and 20 healthy people(control group)in Xijing Hospital were selected for this study.The fasting venous blood of the three groups of subjects was collected and their D-dimer,C-reactive protein(CRP),rheumatoid factor(RF),and erythrocyte sedimentation rate(ESR)were detected.Subsequently,the correlation between each index and rheumatoid arthritis complicated with interstitial lung disease was analyzed.Results:The D-dimer level of the interstitial lung disease group was significantly higher than the other two groups(P<0.05).The D-dimer level of the group without interstitial lung disease was significantly higher than the control group(P<0.05).CRP levels in the interstitial lung disease group and the group without interstitial lung disease were significantly higher than those of the control group(P<0.05).The ESR and RF levels of the interstitial lung disease group were significantly higher than the other two groups(P<0.05).The levels of ESR and RF levels of the group without interstitial lung disease were significantly higher than the control group(P<0.05).Conclusion:D-dimer levels of rheumatoid arthritis patients are higher than those of healthy individuals,and those complicated with interstitial lung disease present even higher levels.This finding shows that there is a correlation between D-dimer levels and rheumatoid arthritis with interstitial lung disease,which may facilitate the evaluation and diagnosis of this disease.
文摘Tumor necrosis factor alpha (TNF-α) a cytokine has been shown to be the key player during the pathogenesis of several autoimmune inflammatory disorders (presumably sterile inflammation) including rheumatoid arthritis (RA). Several studies have shown that TNF-α is mainly involved in the proinflammatory responses. However recent studies have reported multifunctional role of TNF-α during the development of RA. Therefore, in this article we have highlighted the distinct functions of TNF-α during pathogenesis of RA.
