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  1. Lau CS, Chia F, Dans L, Harrison A, Hsieh TY, Jain R, et al.
    Int J Rheum Dis, 2019 Mar;22(3):357-375.
    PMID: 30809944 DOI: 10.1111/1756-185X.13513
    AIM: To update recommendations based on current best evidence concerning the treatment of rheumatoid arthritis (RA), focusing particularly on the role of targeted therapies, to inform clinicians on new developments that will impact their current practice.

    MATERIALS AND METHODS: A search of relevant literature from 2014 to 2016 concerning targeted therapies in RA was conducted. The RA Update Working Group evaluated the evidence and proposed updated recommendations using the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) approach, to describe the quality of evidence and strength of recommendations. Recommendations were finalized through consensus using the Delphi technique.

    RESULTS: This update provides 16 RA treatment recommendations based on current best evidence and expert clinical opinion. Recommendations 1-3 deal with the use of conventional synthetic disease-modifying antirheumatic drugs. The next three recommendations (4-6) cover the need for screening and management of infections and comorbid conditions prior to starting targeted therapy, while the following seven recommendations focus on use of these agents. We address choice of targeted therapy, switch, tapering and discontinuation. The last three recommendations elaborate on targeted therapy for RA in special situations such as pregnancy, cancer, and major surgery.

    CONCLUSION: Rheumatoid arthritis remains a significant health problem in the Asia-Pacific region. Patients with RA can benefit from the availability of effective targeted therapies, and these updated recommendations provide clinicians with guidance on their use.

    Matched MeSH terms: Arthritis, Rheumatoid/diagnosis; Arthritis, Rheumatoid/drug therapy*; Arthritis, Rheumatoid/immunology; Arthritis, Rheumatoid/epidemiology
  2. Fazal SA, Khan M, Nishi SE, Alam F, Zarin N, Bari MT, et al.
    Endocr Metab Immune Disord Drug Targets, 2018 Feb 13;18(2):98-109.
    PMID: 29141572 DOI: 10.2174/1871530317666171114122417
    BACKGROUND AND OBJECTIVE: Rheumatoid arthritis (RA) is a predominant inflammatory autoimmune disorder. The incidence and prevalence of RA is increasing with considerable morbidity and mortality worldwide. The pathophysiology of RA has become clearer due to many significant research outputs during the last two decades. Many inflammatory cytokines involved in RA pathophysiology and the presence of autoantibodies are being used as potential biomarkers via the use of effective diagnostic techniques for the early diagnosis of RA. Currently, several disease-modifying anti-rheumatic drugs are being prescribed targeting RA pathophysiology, which have shown significant contributions in improving the disease outcomes.

    DISCUSSION: Even though innovations in treatment strategies and monitoring are helping the patients to achieve early and sustained clinical and radiographic remission, the high cost of drugs and limited health care budgets are restricting the easy access of RA treatment. Both direct and indirect high cost of treatment are creating economic burden for the patients and affecting their quality of life.

    CONCLUSION: The aim of this review is to describe the updated concept of RA pathophysiology and highlight current diagnostic tools used for the early detection as well as prognosis - targeting several biomarkers of RA. Additionally, we explored the updated treatment options with side effects besides discussing the global economic burden.
    Matched MeSH terms: Arthritis, Rheumatoid/diagnosis; Arthritis, Rheumatoid/economics; Arthritis, Rheumatoid/physiopathology; Arthritis, Rheumatoid/therapy*
  3. Abdul Muizz AM, Mohd Shahrir MS, Sazliyana S, Oteh M, Shamsul AS, Hussein H
    Int J Rheum Dis, 2011 Feb;14(1):18-30.
    PMID: 21303478 DOI: 10.1111/j.1756-185X.2010.01593.x
    AIMS: The aim of this study was to evaluate the left ventricular (LV) diastolic dysfunction in rheumatoid arthritis (RA) patients without clinically evident cardiovascular manifestations and to estimate whether there is any correlation between RA disease severity and disability and LV diastolic dysfunction.
    METHODS: The study was a cross-sectional study involving 53 patients (47 female and 6 male) with RA without clinically evident heart disease and 53 healthy subjects (47 female and 6 male) who served as a control group. Both groups were matched for age and sex. Echocardiographic and Doppler studies were conducted in all patients with RA and control subjects.
    RESULTS: Of 17 cardiac parameters assessed, only two were abnormal. None of the specific cardiac diastolic dysfunction parameters were significantly different in RA patients compared to the control group. There was no significant correlation between diastolic function values in RA patients and value of Disease Activity Score 28 (DAS-28) and value of Health Assessment Questionnaires Disability Index (HAQDI). Atrial (A) wave velocity was greater in RA patients compared to the control group (0.71 [0.58-0.83] vs. 0.61 [0.51-0.71]; P < 0.04). However, interventricular relaxation time (IVRT) ([73.08 ± 9.92 vs. 70.74 ± 9.02], P = 0.207), lower E/A ratio (1.27 [1.02-1.56] vs. 1.42 [1.20-1.68], P = 0.102), diastolic dysfunction parameters according to Redfield Classification (25 [47.2%] vs. 27 [50.9%] P = 0.56), diastolic dysfunction using E/A (P = 0.321) and tissue doppler imaging (E/E') (P = 0.148) were not different.
    CONCLUSION: Prevalence of diastolic dysfunction in the rheumatoid arthritis group (47.2%) was not different from controls (50.9%). LV diastolic function had no significant correlation with RA disease severity and duration of disease.
    Matched MeSH terms: Arthritis, Rheumatoid/diagnosis*; Arthritis, Rheumatoid/epidemiology; Arthritis, Rheumatoid/physiopathology*
  4. Guo J, Wu X, Too CL, Yin F, Lu X, He J, et al.
    PLoS One, 2012;7(7):e41228.
    PMID: 22829930 DOI: 10.1371/journal.pone.0041228
    OBJECTIVES: Dendritic cell immunoreceptor (DCIR) has been implicated in development of autoimmune disorders in rodent and DCIR polymorphisms were associated with anti-citrullinated proteins antibodies (ACPA)-negative rheumatoid arthritis (RA) in Swedish Caucasians. This study was undertaken to further investigate whether DCIR polymorphisms are also risk factors for the development of RA in four Asian populations originated from China and Malaysia.

    METHODS: We genotyped two DCIR SNPs rs2377422 and rs10840759 in Han Chinese population (1,193 cases, 1,278 controls), to assess their association with RA. Subsequently, rs2377422 was further genotyped in three independent cohorts of Malaysian-Chinese subjects (MY_Chinese, 254 cases, 206 controls), Malay subjects (MY_ Malay, 515 cases, 986 controls), and Malaysian-Indian subjects (MY_Indian, 378 cases, 285 controls), to seek confirmation of association in various ethnic groups. Meta-analysis was preformed to evaluate the contribution of rs2377422 polymorphisms to the development of ACPA-negative RA in distinct ethnic groups. Finally, we carried out association analysis of rs2377422 polymorphisms with DCIR mRNA expression levels.

    RESULTS: DCIR rs2377422 was found to be significantly associated with ACPA -negative RA in Han Chinese (OR 1.92, 95% CI 1.27-2.90, P=0.0020). Meta-analysis confirms DCIR rs2377422 as a risk factor for ACPA-negative RA across distinct ethnic groups (OR(overall) =1.17, 95% CI 1.06-1.30, P=0.003). The SNP rs2377422 polymorphism showed significant association with DCIR mRNA expression level, i.e. RA-risk CC genotype exhibit a significant increase in the expression of DCIR (P=0.0023, Kruskal-Wallis).

    CONCLUSIONS: Our data provide evidence for association between DCIR rs2377422 and RA in non-Caucasian populations and confirm the influence of DCIR polymorphisms on RA susceptibility, especially on ACPA-negative RA.
    Matched MeSH terms: Arthritis, Rheumatoid/genetics*
  5. Arshad A
    DOI: 10.1111/j.1479-8077.2005.00116.x
    Pulmonary involvement in rheumatoid arthritis (RA) is a recognized complication but not often well described in the literature and also in major medical textbooks. Thus, for most medical practitioners who look after RA patients, pulmonary complications are often missed and not given much attention. This article will review the current literature of pulmonary involvement in RA and to increase awareness of its existence., Copyright (C) 2005 Blackwell Publishing Ltd
    Matched MeSH terms: Arthritis, Rheumatoid
  6. Lau CS, Chia F, Harrison A, Hsieh TY, Jain R, Jung SM, et al.
    Int J Rheum Dis, 2015 Sep;18(7):685-713.
    PMID: 26334449 DOI: 10.1111/1756-185X.12754
    Rheumatoid arthritis is a chronic inflammatory condition that affects approximately 1% of the world's population. There are a wide number of guidelines and recommendations available to support the treatment of rheumatoid arthritis; however, the evidence used for these guidelines is predominantly based on studies in Caucasian subjects and may not be relevant for rheumatoid arthritis patients in the Asia-Pacific region. Therefore, the Asia Pacific League of Associations for Rheumatology established a Steering Committee in 2013 to address this issue.
    Matched MeSH terms: Arthritis, Rheumatoid/diagnosis; Arthritis, Rheumatoid/therapy*
  7. Wan Muhammad Hatta SF, Kandaswamy L, Gherman-Ciolac C, Mann J, Buch HN
    PMID: 30087779 DOI: 10.1530/EDM-18-0074
    Myopathy is a well-known complication of hypercortisolism and commonly involves proximal lower-limb girdle. We report a rare case of Cushing's syndrome in a 60-year-old female presenting with significant respiratory muscle weakness and respiratory failure. She had history of rheumatoid arthritis, primary biliary cirrhosis and primary hypothyroidism and presented with weight gain and increasing shortness of breath. Investigations confirmed a restrictive defect with impaired gas transfer but with no significant parenchymatous pulmonary disease. Respiratory muscle test confirmed weakness of respiratory muscles and diaphragm. Biochemical and radiological investigations confirmed hypercortisolaemia secondary to a left adrenal tumour. Following adrenalectomy her respiratory symptoms improved along with an objective improvement in the respiratory muscle strength, diaphragmatic movement and pulmonary function test.

    Learning points: Cushing's syndrome can present in many ways, a high index of suspicion is required for its diagnosis, as often patients present with only few of the pathognomonic symptoms and signs of the syndrome.Proximal lower-limb girdle myopathy is common in Cushing's syndrome. Less often long-term exposure of excess glucocorticoid production can also affect other muscles including respiratory muscle and the diaphragm leading to progressive shortness of breath and even acute respiratory failure.Treatment of Cushing's myopathy involves treating the underlying cause that is hypercortisolism. Various medications have been suggested to hinder the development of GC-induced myopathy, but their effects are poorly analysed.

    Matched MeSH terms: Arthritis, Rheumatoid
  8. Pavai S, Sargunan S, Zain AA, Chow SK
    Malays J Pathol, 2011 Dec;33(2):101-6.
    PMID: 22299210 MyJurnal
    Aim: Autoantibodies against cyclic citrullinated peptide (anti-CCP) are considered to be a sensitive and specific marker for rheumatoid arthritis (RA). This study evaluated the diagnostic and analytical performances of the automated anti-CCP assay.
    Materials and Method: Sera from 80 patients with established RA, 65 from other rheumatic diseases (non-RA) and 55 from healthy controls were studied using second generation anti-CCP. Rheumatoid factor (RF) was also assayed in each sample, and the results were compared to the anti-CCP fi ndings. Serum pools were used to determine the precision and linearity.
    Results: At a cut-off of 7.4 U/ml for anti-CCP, the sensitivity and specificity for RA were 65% and 98% respectively. RF had a sensitivity of 58% and a lower specifi city of 93 % than anti-CCP. Conclusion: The high specificity of the assay suggests that anti-CCP is useful in the diagnosis of rheumatoid arthritis and in our cohort of study population anti-CCP exhibits a better diagnostic value than RF. A considerable proportion (28%) of RF-negative RA patients were anti-CCP positive. Based on analytical performance of the assay, we conclude that full automation and high throughput features of AxSYM makes it an ideal platform for routine testing of anti-CCP.
    Study site: Rheumatology clinic, University Malaya Medical Centre (UMMC), Kuala Lumpur, Malaysia
    Matched MeSH terms: Arthritis, Rheumatoid/blood; Arthritis, Rheumatoid/diagnosis*; Arthritis, Rheumatoid/immunology
  9. Dollah R, Yaacob A, Ismail AH, Che Hussin CM
    Objective: The assay for anti-cyclic citrullinated peptide (anti-CCP) antibody is a recent test of interest due to low diagnostic specificity of rheumatoid factor in the diagnosis of rheumatoid arthritis. To determine the sensitivity and specificity of anti-CCP antibodies in rheumatoid arthritis patients using American College of Rheumatology (ACR) criteria as a gold standard.
    Design: A cross sectional study was conducted from January 2008 to December 2008 on 100 patients with rheumatoid arthritis and 153 patients with arthritis or arthralgia but not fulfilling ACR criteria for rheumatoid arthritis.
    Materials and Methods: Serum from each subject was tested for anti-CCP antibodies and IgM rheumatoid factor (IgM RF) by an enzyme linked immunosorbent assay (ELISA). Sensitivity and specificity of the tests were evaluated using the ACR criteria as the gold standard. Data was analyzed using SPSS version 12.0 software. The association between the two categorical variables were tested using chi-square test. The differences between the two groups were tested using independent t-test. Results: The sensitivity of anti-CCP antibodies was 71% with 94.8% of specificity. For rheumatoid factor the sensitivity was 85% and the specificity was 74.5%. Positive predictive value for anti-CCP antibodies was 89.9% whereas for rheumatoid factor it was 68.5%. The sensitivity of ACR criteria with inclusion of anti- CCP antibodies was 100% and specificity of 94.8% (95%CI: 91.3%, 98.2%).
    Conclusion: Anti-CCP antibody has a higher diagnostic accuracy compared to the RF. Anti-CCP antibody is a useful laboratory marker to support the diagnosis of rheumatoid arthritis and to differentiate patients with rheumatoid arthritis from rheumatoid arthritis-like symptoms. Therefore, it is suggested that anti-CCP antibodies should be included as another laboratory supportive criterium besides RF test in ACR criteria in the diagnosis of RA.
    Study site: family medicine clinic, rheumatology clinic and immunology laboratory of Hospital Universiti Sains Malaysia (HUSM), Kubang Kerian, Kelantan, Malaysia
    Matched MeSH terms: Arthritis, Rheumatoid
  10. Othman MA, Ghazali WSW, Hamid WZWA, Wong KK, Yahya NK
    Saudi Med J, 2017 Sep;38(9):934-941.
    PMID: 28889152 DOI: 10.15537/smj.2017.9.20841
    OBJECTIVES: To evaluate levels of anti-carbamylated protein (anti-CarP) antibodies in rheumatoid arthritis (RA) patients and to determine their association with serological parameters and disease activity. Methods: A cross-sectional study involving 105 multiethnic RA patients (48 rheumatoid factor [RF]-positive and 57 RF-negative patients) was conducted at Hospital Universiti Sains Malaysia, Kelantan, Malaysia, from January 2015 to February 2016. Fifty healthy controls (HCs) were included. C-reactive protein (CRP), RF, anti-cyclic citrullinated peptide (anti-CCP) and anti-CarP antibodies were measured. A health assessment questionnaire (HAQ) was administered to the study participants and 28-joint Disease Activity Score (DAS28) were obtained. Results: The level of anti-CarP antibodies was significantly increased in the RA patients compared with HCs (p=0.042). The presence of anti-CarP antibodies was significantly associated with RF (p=0.019) and the HAQ (p=0.010). A significant association between the presence of anti-CarP antibodies and the DAS28 was not found (p=0.632). Conclusion: Our study provides further evidence that the level of anti-CarP antibodies is significantly elevated in RA patients.

    Study site: Rheumatology clinic, Hospital Universiti Sains Malaysia
    Matched MeSH terms: Arthritis, Rheumatoid/immunology*
  11. Rajalingam S, Sakthiswary R, Hussein H
    Arch Rheumatol, 2017 Mar;32(1):15-20.
    PMID: 30375543 DOI: 10.5606/ArchRheumatol.2017.5960
    Objectives: This study aims to determine the predictors of poor sleep quality in rheumatoid arthritis (RA).

    Patients and methods: This was a monocentric, cross sectional, case-control study which was conducted at the Putrajaya Hospital, Malaysia. We recruited 46 patients with RA (3 males; 43 females; mean age 48.15±14.96) and 46 age and sex-matched healthy controls (3 males; 43 females; mean age 47.11±12.22). RA patients were assessed for their disease activity based on disease activity score in 28 joints, disease damage based on radiographic erosions, and functional status based on Health Assessment Questionnaire Disability Index. The Pittsburgh Sleep Quality Index (PSQI) scores were determined by interviewing all the subjects. Subjects with RA were further subdivided based on their PSQI scores as "good sleepers" with PSQI scores of <5 and "poor sleepers" with PSQI scores of ≥5.

    Results: The percentage of poor sleepers was significantly higher among RA patients (47.83% versus 9.57%). Median scores of 5 out of 7 components of the PSQI were higher among RA patients compared to controls. Among poor sleepers with RA, a significantly higher proportion tested positive for anti-citrullinated cyclic peptide autoantibodies (p=0.037). Besides, poor sleepers had significantly higher median Health Assessment Questionnaire Disability Index (p=0.017) than good sleepers. However, both Health Assessment Questionnaire Disability Index (p=0.968) and anti-citrullinated cyclic peptide (p=0.431) were insignificant when entered in the equation of a logistic regression model.

    Conclusion: The findings of this study demonstrate a link between functional disability, anti-citrullinated cyclic peptide antibodies, and sleep quality in RA.
    Matched MeSH terms: Arthritis, Rheumatoid
  12. Mohamad WMW, Jia SK, Ghazali WSW, Taib H
    Pak J Med Sci, 2018 9 8;34(4):907-912.
    PMID: 30190751 DOI: 10.12669/pjms.344.15007
    Objectives: Studies have shown that periodontal disease and Rheumatoid Arthritis (RA) shared similar pathogenesis. Anti-Cyclic Citrullinated Peptide anibodies (anti-CCP) has recently been used for diagnosis of RA. Thus, this study aimed to assess the levels of anti-CCP antibodies and periodontal status in RA patients.
    Methods: Forty four RA patients were included in this study. The blood samples were analysed for anti-CCP levels. Plaque Score (PS), Gingivitis Score (GS), Probing Pocket Depth (PPD) and Clinical Attachment Loss (CAL) were recorded for assessment of periodontal status. Relevant clinical information was obtained from medical records.
    Results: Mean anti-CCP level was 180.8 ± 290.3 Unit/ml. The results showed that 27.3% patients had poor oral hygiene (PS >60%; mean anti-CCP 84.22 ± 167.51 Unit/ml), 52.3% had generalized gingivitis (mean anti-CCP 145.07 ± 269.17 Unit/ml), and 20.5% had mean CAL of >3mm (mean anti-CCP 56.81 ± 119.02 Unit/ml). None of patients presented with deep PPD > 4mm. The levels of anti-CCP showed no significant association with periodontal status (p=0.27).
    Conclusion: Most RA patients were positive for anti-CCP antibodies and presented with generalized gingivitis. Oral hygiene education should be reinforced in RA patients to prevent further progression of periodontal disease. Nevertheless, studies with larger sample size should be carried out to obtain more conclusive findings.
    Study site: Rheumatology Clinic and Dental Clinic of Hospital Universiti Sains Malaysia (USM), Kubang Kerian, Kelantan, Malaysia
    Matched MeSH terms: Arthritis, Rheumatoid
  13. Abdul Wahab A, Mohammad M, Rahman MM, Mohamed Said MS
    Pak J Med Sci, 2013 May;29(3):773-7.
    PMID: 24353626
    Objectives: Anti-cyclic citrullinated peptide (CCP) antibody has recently been used in the classification
    of rheumatoid arthritis (RA). This antibody is more specific than rheumatoid factor (RF) for the diagnosis of RA. The study objectives were to determine the sensitivity, specificity, positive and negative predictive values of anti-CCP in RA diagnosis.
    Methodology: Eighty RA patients and 80 non-RA individuals were included in the study. Blood was collected from both arms of study subjects and tested for anti-CCP and RF antibodies. Relevant clinical information and laboratory profiles of the RA patients were evaluated using patients’ medical records and Integrated Laboratory Management System (ILMS), respectively.
    Results: The sensitivity and specificity of anti-CCP were 35% and 100% respectively. The positive and
    negative predictive values were 100% and 61%, respectively. Positive anti-CCP was found significantly
    associated with multiple joint pain (p < 0.001) and hand’s joints pain (p=0.01), symmetrical joints
    involvement (p=0.015) and high CRP value (p < 0.001). Anti-CCP was also found to have positive association with RF (p < 0.001).
    Conclusion: Anti-CCP is highly specific for the diagnosis of RA. High positive predictive value should be taken into consideration for effective treatment.
    KEY WORD: Rheumatoid arthritis, anti-CCP, Rheumatoid factor, Sensitivity, Specificity, Positive predictive value, Negative predictive value.
    Study site: Rheumatology Unit, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM), Kuala Lumpur, Malaysia
    Matched MeSH terms: Arthritis, Rheumatoid
  14. Sulaiman FN, Wong KK, Ahmad WAW, Ghazali WSW
    Medicine (Baltimore), 2019 Mar;98(12):e14945.
    PMID: 30896663 DOI: 10.1097/MD.0000000000014945
    Rheumatoid arthritis (RA) is a chronic debilitating inflammatory disease affecting mainly the joint, surrounding tissue and other extra-articular structures in the body. RA can lead to destruction of bone and cartilage which may cause severe disability and it is characterized by the presence of serum rheumatoid factor (RF). The anti-cyclic citrullinate peptide (anti-CCP) antibody is another serum biomarker used in RA diagnosis with higher sensitivity and specificity.In this cross-sectional study with retrospective record review, 159 established RA patients from Hospital Universiti Sains Malaysia (HUSM) were recruited. Enzyme-linked immunosorbent assays (ELISAs) for serum RF and anti-CCP were performed. Our goal was to evaluate the significance of anti-CCP antibody in predicting the disease activity and progression in terms of radiological and extra-articular manifestations upon diagnosis.Of the 159 RA patients included in this study, mean age was 48.3 years old and majority (n = 134; 84.3%) were female. A total of 83 (52.2%) and 99 (62.3%) patients had anti-CCP antibody and RF, respectively. Mean Disease Activity Score-28 for Rheumatoid Arthritis with erythrocyte sedimentation rate (ESR) (DAS28-ESR) score for all patients was 4.74 (medium and high disease activity). Fifty-eight (36.5%) patients had radiological defects and 49 (30.8%) patients had extra-articular involvement manifested by rheumatoid nodule, pulmonary involvement, and anemia.In terms of anti-CCP antibody association with clinical and laboratory parameters, a significant co-occurrence of RF and anti-CCP antibody (P = .002) was observed. Anti-CCP antibody was significantly associated with radiological defects in which majority of patients with such defects (n = 40/58; 68.9%) were positive for anti-CCP antibody (P = .001). However, there was no significant difference between mean and classes of disease activity score and extra-articular manifestations between different anti-CCP antibody groups. In addition, extra-articular manifestations were not associated with high disease activity upon RA diagnosisThere was a significant association between anti-CCP antibody positivity and positive RF. Radiological defects were the sole clinical parameter significantly associated with anti-CCP antibody positivity, indicating that patients positive for anti-CCP antibody should be routinely monitored for radiological defects and their onset.
    Matched MeSH terms: Arthritis, Rheumatoid/blood*; Arthritis, Rheumatoid/immunology
  15. Yuslina MY, Shahnaz M, Too CL, Hussein H, Wahinuddin S, Eashwary M, et al.
    APLAR Journal of Rheumatology, 2006;9 Suppl 1:A187-A188.
    Background: Anti-cyclic citrullinated peptide autoantibodies (anti-CCP) is a new serological test for the diagnosis of rheumatoid arthritis (RA). It is an enzyme immunoassay (EIA) for the detection of antibodies directed toward citrullinated peptides. Studies show this test has an improved diagnostic value compared to rheumatoid factor (RF). Objective: To determine the sensitivity and specificity of anti-CCP in patients with rheumatoid arthritis and other rheumatic diseases. Method: 227 serum samples for rheumatology clinics (Putrajaya, Taiping, and Ipoh Hospital) were tested for the presence of anti-CCP and rheumatoid factor (RF). These included 171 patients diagnosed with RA and 56 from other rheumatic diseases. Patient demographic data, clinical diagnosis, radiographic information and other laboratory data were obtained from the patients' clinical notes. Results: Anti-CCP antibodies were detected in 76.6% (131/171) patients with RA and 17.9% (10/56) patients with other arthritis. The sensitivity and specificity of anti-CCP reactivity at the optimal cut off values were 66.1% and 87.5% respectively. The sensitivity of anti-CCP was higher than that for RF (41.8%). However, the presence of either anti-CCP or RF improved the sensitivity to 76.2%. Conclusion: The detection of anti-CCP alone maybe useful in the diagnosis of RA. However, when used concomitantly with RF, it can improve the diagnostic ability significantly.
    Matched MeSH terms: Arthritis, Rheumatoid
  16. Lew PH, Rahman MT, Safii SH, Baharuddin NA, Bartold PM, Sockalingam S, et al.
    BMC Oral Health, 2021 07 20;21(1):360.
    PMID: 34284769 DOI: 10.1186/s12903-021-01712-y
    BACKGROUND: Previous studies have reported conflicting findings between serum anti-citrullinated protein antibodies (ACPA) levels in rheumatoid arthritis (RA) participants with and without periodontitis (Pd). This study aimed to analyse possible correlations between serum ACPA levels and clinical parameters in Pd and RA participants.

    METHODS: Full mouth periodontal examination (probing pocket depth, clinical attachment levels, gingival bleeding index, visual plaque index) was conducted and serum samples obtained from 80 participants comprising RA, Pd, both RA and Pd (RAPd) and healthy individuals (HC). Erythrocyte sedimentation rates (ESR) and periodontal inflamed surface area (PISA) were obtained. Serum samples were analysed for ACPA quantification using enzyme-linked immunosorbent assay (ELISA).

    RESULTS: Median levels (IU/mL) of ACPA (interquartile range, IQR) in RAPd, RA, Pd and HC groups were 118.58(274.51), 102.02(252.89), 78.48(132.6) and 51.67(91.31) respectively. ACPA levels were significantly higher in RAPd and RA as compared to HC group (p  RA > Pd > HC. However, lack of any significant correlation between the serum ACPA levels with the clinical Pd and RA parameters warrants further studies to investigate the causal link between RA and Pd for such a trend. Further studies involving more inflammatory biomarkers might be useful to establish the causal link between Pd in the development and progression of RA or vice versa.

    Matched MeSH terms: Arthritis, Rheumatoid*
  17. Foong, Audrey Kow Siew, Nuha Fahimah Binti Wan Zahidi, Chau, Ling Tham
    MyJurnal
    Immunoglobulins are antibodies that play important roles in preserving our immune system. They have the ability to initiate humoral responses and remove antigen from the body. Out of the five major isotypes of immunoglobulins, IgG are most abundantly found in human serum. Abnormalities – deficiency or elevation in the level of IgG are found to be associated to the occurrence of several autoimmune diseases. These may include rheumatoid arthritis, Crohn’s disease, Mikulicz’s disease, Kuttner’s tumour and Hashimoto’s thyroiditis. Apart from autoimmune diseases, IgG has been found to play a role in initiating anaphylaxis, a severe and life threatening form of allergy and lately it has been discovered in cases of dengue virus infection too. It is important to acknowledge the roles of IgG on diseases especially subclass IgG4 which the elevation has been tied to numerous diseases such as Kuttner’s tumour and Hashimoto’s thyroiditis hence termed IgG4-related diseases. In addition, the roles of IgG in anaphylaxis are of importance, too, as IgG has been used in allergy immunotherapy. Hence, this review is a mini compilation of effects of IgG abnormalities based on their subclasses. Hopefully it will provide insightful understanding on the development of diagnostic and therapeutic courses for the aforementioned IgG abnormalities in the future.
    Matched MeSH terms: Arthritis, Rheumatoid
  18. Wong SK, Chin KY, Ima-Nirwana S
    Phytomedicine, 2020 Jul 15;73:152892.
    PMID: 30902523 DOI: 10.1016/j.phymed.2019.152892
    BACKGROUND: Musculoskeletal disorders are a group of disorders that affect the joints, bones, and muscles, causing long-term disability. Berberine, an isoquinoline alkaloid, has been previously established to exhibit beneficial properties in preventing various diseases, including musculoskeletal disorders.

    PURPOSE: This review article aims to recapitulate the therapeutic potential of berberine and its mechanism of action in treating musculoskeletal disorders.

    METHODS: A wide range of literature illustrating the effects of berberine in ameliorating musculoskeletal disorders was retrieved from online electronic databases (PubMed and Medline) and reviewed.

    RESULTS: Berberine may potentially retard the progression of osteoporosis, osteoarthritis and rheumatoid arthritis. Limited studies reported the effects of berberine in suppressing the proliferation of osteosarcoma cells. These beneficial properties of berberine are mediated in part through its ability to target multiple signaling pathways, including PKA, p38 MAPK, Wnt/β-catenin, AMPK, RANK/RANKL/OPG, PI3K/Akt, NFAT, NF-κB, Hedgehog, and oxidative stress signaling. In addition, berberine exhibited anti-apoptotic, anti-inflammatory, and immunosuppressive properties.

    CONCLUSION: The current evidence indicates that berberine may be effective in preventing musculoskeletal disorders. However, findings from in vitro and in vivo investigations await further validation from human clinical trial.

    Matched MeSH terms: Arthritis, Rheumatoid/prevention & control
  19. Sakthiswary R, Syahrul Sazliyana S, Mohd Shahrir MS, Shahril NS, Hussein H
    EXCLI J, 2012;11:142-9.
    PMID: 27385955
    Tumor necrosis factor alpha (TNFα) is a multifunctional cytokine which plays a pivotal role in the pathogenesis of rheumatoid arthritis (RA). Apart from its well recognized proinflammatory properties, it is known to interfere with lipid metabolism and erythropoiesis. We evaluated the effects of adalimumab on hematologic, lipid and inflammatory parameters using data from patients on adalimumab 40 mg fortnightly from 2 centers in Malaysia. Mean changes in laboratory values from baseline to Weeks 4, 12 and 24 were compared using paired T test and Wilcoxon signed-rank test. We studied 18 patients with RA who were on adalimumab 40 mg fortnightly. The inflammatory markers i.e. erythrocyte sedimentation rate and C reactive protein showed significant changes as early as at week 4 compared to baseline with p values of 0.003 and 0.005, respectively. From a baseline of high disease activity with a mean Disease Activity Score using 28 joint counts (DAS 28) of 5.3, there was a steady improvement in the disease activity and remission was achieved at week 24 with a DAS 28 of 2.4. The hemoglobin level improved at week 12 (p=0.013) and this was sustained till week 24. As opposed to previous studies, the LDL level significantly decreased at week 12 (p=0.015) and this change persisted till week 24 (p=0.001). The total cholesterol showed a similar pattern as the LDL. The pharmacodynamics of adalimumab therapy in rheumatoid arthritis extend beyond the joints with favorable effects on haemoglobin and lipid profile.

    Study site: Putrajaya Hospital and Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM), Kuala Lumpur, Malaysia
    Matched MeSH terms: Arthritis, Rheumatoid
  20. Bajuri MN, Kadir MR, Amin IM, Ochsner A
    Proc Inst Mech Eng H, 2012 Jul;226(7):510-20.
    PMID: 22913098 DOI: 10.1177/0954411912445846
    The wrist is the most complex joint for virtual three-dimensional simulations, and the complexity is even more pronounced when dealing with skeletal disorders of the joint such, as rheumatoid arthritis (RA). In order to analyse the biomechanical difference between healthy and diseased joints, three-dimensional models of these two wrist conditions were developed from computed tomography images. These images consist of eight carpal bones, five metacarpal bones, the distal radius and ulna. The cartilages were developed based on the shape of the available articulations and ligaments were simulated via mechanical links. The RA model was developed accurately by simulating all ten common criteria of the disease related to the wrist. Results from the finite element (FE) analyses showed that the RA model produced three times higher contact pressure at the articulations compared to the healthy model. Normal physiological load transfer also changed from predominantly through the radial side to an increased load transfer approximately 5% towards the ulnar. Based on an extensive literature search, this is the first ever reported work that simulates the pathological conditions of the rheumatoid arthritis of the wrist joint.
    Matched MeSH terms: Arthritis, Rheumatoid; Arthritis, Rheumatoid/physiopathology*
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