Displaying publications 1 - 20 of 58 in total

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  1. Awuah WA, Huang H, Kalmanovich J, Mehta A, Mikhailova T, Ng JC, et al.
    Medicine (Baltimore), 2023 Aug 11;102(32):e34614.
    PMID: 37565922 DOI: 10.1097/MD.0000000000034614
    The circadian rhythm (CR) is a fundamental biological process regulated by the Earth's rotation and solar cycles. It plays a critical role in various bodily functions, and its dysregulation can have systemic effects. These effects impact metabolism, redox homeostasis, cell cycle regulation, gut microbiota, cognition, and immune response. Immune mediators, cycle proteins, and hormones exhibit circadian oscillations, supporting optimal immune function and defence against pathogens. Sleep deprivation and disruptions challenge the regulatory mechanisms, making immune responses vulnerable. Altered CR pathways have been implicated in diseases such as diabetes, neurological conditions, and systemic autoimmune diseases (SADs). SADs involve abnormal immune responses to self-antigens, with genetic and environmental factors disrupting self-tolerance and contributing to conditions like Systemic Lupus Erythematosus, Rheumatoid Arthritis, and Inflammatory Myositis. Dysregulated CR may lead to increased production of pro-inflammatory cytokines, contributing to the systemic responses observed in SADs. Sleep disturbances significantly impact the quality of life of patients with SADs; however, they are often overlooked. The relationship between sleep and autoimmune conditions, whether causal or consequential to CR dysregulation, remains unclear. Chrono-immunology investigates the role of CR in immunity, offering potential for targeted therapies in autoimmune conditions. This paper provides an overview of the connections between sleep and autoimmune conditions, highlighting the importance of recognizing sleep disturbances in SADs and the need for further research into the complex relationship between the CR and autoimmune diseases.
    Matched MeSH terms: Autoimmune Diseases*
  2. Islam MA, Kamal MA, Gan SH, Alam F
    Semin Cancer Biol, 2020 08;64:iii-iv.
    PMID: 31589922 DOI: 10.1016/j.semcancer.2019.10.001
    Matched MeSH terms: Autoimmune Diseases/complications*; Autoimmune Diseases/immunology; Autoimmune Diseases/pathology
  3. Sen P, R N, Houshmand N, Moghadam Kia S, Joshi M, Saha S, et al.
    Rheumatology (Oxford), 2023 Oct 03;62(10):3291-3301.
    PMID: 36734536 DOI: 10.1093/rheumatology/kead057
    OBJECTIVE: COVID-19 vaccines have a favorable safety profile in patients with autoimmune rheumatic diseases (AIRDs) such as idiopathic inflammatory myopathies (IIMs); however, hesitancy continues to persist among these patients. Therefore, we studied the prevalence, predictors and reasons for hesitancy in patients with IIMs, other AIRDs, non-rheumatic autoimmune diseases (nrAIDs) and healthy controls (HCs), using data from the two international COVID-19 Vaccination in Autoimmune Diseases (COVAD) e-surveys.

    METHODS: The first and second COVAD patient self-reported e-surveys were circulated from March to December 2021, and February to June 2022 (ongoing). We collected data on demographics, comorbidities, COVID-19 infection and vaccination history, reasons for hesitancy, and patient reported outcomes. Predictors of hesitancy were analysed using regression models in different groups.

    RESULTS: We analysed data from 18 882 (COVAD-1) and 7666 (COVAD-2) respondents. Reassuringly, hesitancy decreased from 2021 (16.5%) to 2022 (5.1%) (OR: 0.26; 95% CI: 0.24, 0.30, P 

    Matched MeSH terms: Autoimmune Diseases*
  4. Islam A, Kamal MA
    PMID: 29508678 DOI: 10.2174/187153031802180213144657
    Matched MeSH terms: Autoimmune Diseases/diagnosis*; Autoimmune Diseases/immunology; Autoimmune Diseases/physiopathology; Autoimmune Diseases/therapy
  5. Islam MA, Kamal MA, Md Zulfiker AH, Gan SH
    Curr Pharm Des, 2019;25(27):2907-2908.
    PMID: 31621552 DOI: 10.2174/138161282527191007151037
    Matched MeSH terms: Autoimmune Diseases/physiopathology*; Autoimmune Diseases/therapy*
  6. Abdo AIK, Tye GJ
    Inflamm Res, 2020 May;69(5):463-480.
    PMID: 32215665 DOI: 10.1007/s00011-020-01339-9
    PURPOSE: IL-23 is a central proinflammatory cytokine with a wide range of influence over immune response. It is implicated in several autoimmune diseases due to the infinite inflammatory loops it can create through the positive feedbacks of both IL-17 and IL-22 arms. This made IL-23 a key target of autoimmune disorders therapy, which indeed was proven to inhibit inflammation and ameliorate diseases. Current autoimmune treatments targeting IL-23 are either by preventing IL-23 ligation to its receptor (IL-23R) via antibodies or inhibiting IL-23 signaling by signaling downstream mediators' inhibitors, with each approach having its own pros and cons.

    METHODS: Literature review was done to further understand the biology of IL-23 and current therapies.

    RESULTS: In this review, we discuss the biological features of IL-23 and its role in the pathogenesis of autoimmune diseases including psoriasis, rheumatoid arthritis and inflammatory bowel diseases. Advantages, limitations and side effects of each concept will be reviewed, suggesting several advanced IL-23-based bio-techniques to generate new and possible future therapies to overcome current treatments problems.

    Matched MeSH terms: Autoimmune Diseases/drug therapy; Autoimmune Diseases/immunology*
  7. Patrick Engkasan J
    Int J Rheum Dis, 2020 Aug;23(8):1104-1106.
    PMID: 32525275 DOI: 10.1111/1756-185X.13878
    Matched MeSH terms: Autoimmune Diseases/diagnosis; Autoimmune Diseases/rehabilitation*
  8. Bosco J
    Ann Acad Med Singap, 1988 Apr;17(2):251-3.
    PMID: 3044263
    Immunology is a discipline that traverses all branches of clinical medicine. Thus since about ten years ago major hospitals in Malaysia established routine clinical immunology services particularly in the diagnosis of autoimmune/connective tissue disorders. More recently these laboratories have ventured into basic research in Dengue Haemorrhagic Fever, Leukaemia Immunology, Nasopharyngeal Cancer and Leprosy. The rationale for these projects together with early results from them are discussed.
    Matched MeSH terms: Autoimmune Diseases/immunology
  9. Lee YH, Lew PH, Cheah CW, Rahman MT, Baharuddin NA, Vaithilingam RD
    J Int Acad Periodontol, 2019 07 01;21(3):99-110.
    PMID: 31473702
    Periodontitis (PD), a chronic inflammatory disease which results in irreversible attachment loss, bone destruction and tooth loss, is a major oral health problem. Rheumatoid arthritis (RA), with a global prevalence of 1%, is an autoimmune disease characterized as a chronic inflammatory disorder leading to synovial inflammation and destruction of cartilage and bone. Studies have reported an association between PD and RA whereby PD is reportedly more severe in patients with established RA. Justification for the plausible link between both conditions is based on shared characteristics and pathogenic similarities with regard to risk factors, immunogenetics and tissue destruction pathways. The search for the possible mechanism linking PD to RA continues as it can play an important role in enabling early intervention in the form of prevention and treatment of infection. This will ultimately improve patients' oral health related quality of life and reduce societal burden related to increased patient discomfort and treatment costs. The current review provides an update on the cellular and molecular events that have thus far explained the link.
    Matched MeSH terms: Autoimmune Diseases*
  10. CHAN KE, THURAISINGHAM V
    Med J Malaya, 1963 Mar;17:163-9.
    PMID: 14019984
    Matched MeSH terms: Autoimmune Diseases*
  11. Lim TT
    Parkinsonism Relat Disord, 2017 Nov;44:106-109.
    PMID: 29097081 DOI: 10.1016/j.parkreldis.2017.08.017
    PURPOSE OF REVIEW: To provide an overview of paraneoplastic autoimmune disorders presenting with various movement disorders.

    RECENT FINDINGS: The spectrum of paraneoplastic autoimmune disorders has been expanding with the discovery of new antibodies against cell surface and intracellular antigens. Many of these paraneoplastic autoimmune disorders manifest as a form of movement disorder. With the discovery of new neuronal antibodies, an increasing number of idiopathic or neurodegenerative movement disorders are now being reclassified as immune-mediated movement disorders. These include anti-N-methyl-d-aspartate receptor (NMDAR) encephalitis which may present with orolingual facial dyskinesia and stereotyped movements, CRMP-5 IgG presenting with chorea, anti-Yo paraneoplastic cerebellar degeneration presenting with ataxia, anti-VGKC complex (Caspr2 antibodies) neuromyotonia, opsoclonus-myoclonus-ataxia syndrome, and muscle rigidity and episodic spasms (amphiphysin, glutamic acid decarboxylase, glycine receptor, GABA(A)-receptor associated protein antibodies) in stiff-person syndrome.

    SUMMARY: Movement disorders may be a presentation for paraneoplastic autoimmune disorders. Recognition of these disorders and their common phenomenology is important because it may lead to the discovery of an occult malignancy.

    Matched MeSH terms: Autoimmune Diseases*
  12. Wong CK, Ng CF, Tan HJ, Mukari SAM
    BMJ Case Rep, 2021 May 24;14(5).
    PMID: 34031085 DOI: 10.1136/bcr-2021-242090
    Bickerstaff brainstem encephalitis (BBE) is a rare autoimmune encephalitis characterised by ataxia, ophthalmoplegia and altered consciousness. An overlap between BBE with Guillain-Barré syndrome (GBS) shows similar clinical and immunological features. We report a case of BBE with GBS overlap secondary to Chlamydia pneumoniae infection. The triad of altered consciousness, ataxia and ophthalmoplegia were present in the patient. The investigations included cerebrospinal fluid cytoalbuminological dissociation, nerve conduction test that showed prolonged or absent F wave latencies, hyperintensity in the left occipital region on brain MRI and diffuse slow activity on the electroencephalogram. The chlamydia serology was positive indicating a postinfectious cause of BBE syndrome. He required artificial ventilation as his consciousness level deteriorated with tetraparesis, oropharyngeal and respiratory muscle weakness. Immunotherapy with intravenous immunoglobulin and methylprednisolone was commenced. He made good recovery with the treatment. Prompt recognition of this rare condition following chlamydia infection is important to guide the management.
    Matched MeSH terms: Autoimmune Diseases of the Nervous System*
  13. Zanna MY, Yasmin AR, Omar AR, Arshad SS, Mariatulqabtiah AR, Nur-Fazila SH, et al.
    Int J Mol Sci, 2021 Jul 28;22(15).
    PMID: 34360810 DOI: 10.3390/ijms22158044
    Dendritic cells (DCs) are cells derived from the hematopoietic stem cells (HSCs) of the bone marrow and form a widely distributed cellular system throughout the body. They are the most efficient, potent, and professional antigen-presenting cells (APCs) of the immune system, inducing and dispersing a primary immune response by the activation of naïve T-cells, and playing an important role in the induction and maintenance of immune tolerance under homeostatic conditions. Thus, this review has elucidated the general aspects of DCs as well as the current dynamic perspectives and distribution of DCs in humans and in various species of animals that includes mouse, rat, birds, dog, cat, horse, cattle, sheep, pig, and non-human primates. Besides the role that DCs play in immune response, they also play a pathogenic role in many diseases, thus becoming a target in disease prevention and treatment. In addition, its roles in clinical immunology have also been addressed, which include its involvement in transplantation, autoimmune disease, viral infections, cancer, and as a vaccine target. Therefore, based on the current knowledge and understanding of the important roles they play, DCs can be used in the future as a powerful tool for manipulating the immune system.
    Matched MeSH terms: Autoimmune Diseases/immunology
  14. Ang GS, Da Costa JL
    Med J Malaya, 1971 Dec;26(2):137-8.
    PMID: 4260861
    Matched MeSH terms: Autoimmune Diseases/complications
  15. Ching WL, Idris AN, Nor NK, Giok LP
    J ASEAN Fed Endocr Soc, 2023;38(2):13-19.
    PMID: 38045679 DOI: 10.15605/jafes.038.02.10
    INTRODUCTION: Type 1 diabetes mellitus (T1DM) is an autoimmune disorder that requires a lifelong treatment regimen which may affect psychosocial development.

    OBJECTIVE: To identify behavioural and emotional problems in children and adolescents with T1DM.

    METHODOLOGY: A cross-sectional study using the Child Behaviour Check List (CBCL) was conducted among all T1DM patients receiving treatment at the Paediatric Endocrine Unit, Hospital Tunku Azizah Kuala Lumpur, Malaysia.

    RESULTS: Forty T1DM patients were included. The mean age of the participants was 12.4 years (SD = 2.69), with 52.5% males, and 75% Malay. The average duration of illness was 4.8 years, 9 were pre-pubertal, while mean HbA1c was 9.4%. Thirty-five percent of the respondents had parent-reported internalizing problems and 17.5% had parent-reported externalizing problems. Those >12 years old had more internalizing problems (p = 0.004) compared to those ≤12 years old. The differences were in the anxious/depressed syndrome subscale (p = 0.001) and withdrawn/depressed syndrome subscale (p = 0.015). There were no statistically significant differences in the 3 main global scores by gender, glycaemic control, duration of illness and pubertal status by univariate analysis.

    CONCLUSION: T1DM patients >12 years old were at higher risk of developing psychosocial difficulties. This highlighted the benefit of screening of behavioural and emotional issues in children and adolescents with T1DM.

    Matched MeSH terms: Autoimmune Diseases*
  16. Pan SY, Chia YC, Yee HR, Fang Cheng AY, Anjum CE, Kenisi Y, et al.
    Future Sci OA, 2020 Oct 29;7(2):FSO648.
    PMID: 33437514 DOI: 10.2144/fsoa-2020-0142
    The immune system is a complex network of specialized cells and organs that recognises and reacts against foreign pathogens while remaining unresponsive to host tissues. This ability to self-tolerate is known as immunological tolerance. Autoimmune disease occurs when the immune system fails to differentiate between self and non-self antigens and releases autoantibodies to attack our own cells. Anti-idiotypic (anti-ID) antibodies are important in maintaining a balanced idiotypic regulatory network by neutralising and inhibiting the secretion of autoantibodies. Recently, anti-ID antibodies have been advanced as an alternative form of immunotherapy as they can specifically target autoantibodies, cause less toxicity and side effects, and could provide long-lasting immunity. This review article discusses the immunomodulatory potential of anti-ID antibodies for the treatment of autoimmune diseases.
    Matched MeSH terms: Autoimmune Diseases
  17. McShane CM, Murray LJ, Landgren O, O'Rorke MA, Korde N, Kunzmann AT, et al.
    Cancer Epidemiol Biomarkers Prev, 2014 Feb;23(2):332-42.
    PMID: 24451437 DOI: 10.1158/1055-9965.EPI-13-0695
    BACKGROUND: Several observational studies have investigated autoimmune disease and subsequent risk of monoclonal gammopathy of undetermined significance (MGUS) and multiple myeloma. Findings have been largely inconsistent and hindered by the rarity and heterogeneity of the autoimmune disorders investigated. A systematic review of the literature was undertaken to evaluate the strength of the evidence linking prior autoimmune disease and risk of MGUS/multiple myeloma.

    METHODS: A broad search strategy using key terms for MGUS, multiple myeloma, and 50 autoimmune diseases was used to search four electronic databases (PubMed, Medline, Embase, and Web of Science) from inception through November 2011.

    RESULTS: A total of 52 studies met the inclusion criteria, of which 32 were suitably comparable to perform a meta-analysis. "Any autoimmune disorder" was associated with an increased risk of both MGUS [n = 760 patients; pooled relative risk (RR) 1.42; 95% confidence interval (CI), 1.14-1.75] and multiple myeloma (n>2,530 patients; RR 1.13, 95% CI, 1.04-1.22). This risk was disease dependent with only pernicious anemia showing an increased risk of both MGUS (RR 1.67; 95% CI, 1.21-2.31) and multiple myeloma (RR 1.50; 95% CI, 1.25-1.80).

    CONCLUSIONS: Our findings, based on the largest number of autoimmune disorders and patients with MGUS/multiple myeloma reported to date, suggest that autoimmune diseases and/or their treatment may be important in the etiology of MGUS/multiple myeloma. The strong associations observed for pernicious anemia suggest that anemia seen in plasma cell dyscrasias may be of autoimmune origin.

    IMPACT: Underlying mechanisms of autoimmune diseases, general immune dysfunction, and/or treatment of autoimmune diseases may be important in the pathogenesis of MGUS/multiple myeloma.

    Matched MeSH terms: Autoimmune Diseases/immunology*; Autoimmune Diseases/epidemiology
  18. Latiff AH, Kerr MA
    Ann. Clin. Biochem., 2007 Mar;44(Pt 2):131-9.
    PMID: 17362578 DOI: 10.1258/000456307780117993
    IgA deficiency is the most common primary immunoglobulin deficiency. The prevalence in Caucasians is around one in 500, whereas in some Asian populations it is very uncommon. Most individuals with IgA deficiency are clinically asymptomatic. Those with symptoms of immunodeficiency have predominantly sinopulmonary or gastrointestinal infections, which are more severe when associated with IgG2, IgG4 or specific antibody deficiency. IgA deficiency is believed to be one end of a spectrum of immunodeficiency with common variable immunodeficiency at the most severe end. Although primary IgA deficiency is the most commonly encountered form, secondary deficiencies due to drugs or viral infections are recognized. IgA deficiencies can be partial or transient. Primary IgA deficiency is caused by a defect of terminal lymphocyte differentiation, which leads to underproduction of serum and mucosal IgA; affected individuals have normal IgA genes. A number of non-immunoglobulin genes have been implicated in IgA deficiency. There have been many diseases reported in association with IgA deficiency, particularly autoimmune diseases. The most common association is with coeliac disease (CD), which has special significance since CD is usually diagnosed by detection of specific IgA antibodies that are obviously lacking in IgA deficiency. There is no specific treatment for patients with symptomatic IgA deficiency. Antibiotics are prescribed in those with acute infections. A significant proportion of IgA-deficient individuals are reported to have anti-IgA antibodies in their serum. Although blood or blood products given to IgA-deficient individuals can lead to severe, even fatal, transfusion reactions, such reactions are rare.
    Matched MeSH terms: Autoimmune Diseases/immunology; Autoimmune Diseases/metabolism
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