Articles

Immunopathology and Laboratory Diagnosis of Rheumatoid Arthritis: A Review of Literature

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This review explores rheumatoid arthritis, an autoimmune disorder whose immunopathology involves a convergence of genetic susceptibility (notably HLA-DRB1 shared epitope alleles) and environmental exposures (smoking, infections) leading to an aberrant immune response. RA is a prevalent autoimmune disease globally, and though historically considered uncommon in Africa, emerging data show it is an important and likely under-recognized health issue in regions like Nigeria. Epidemiologically, ~0.5% of the world’s population is affected with millions suffering chronic pain and disability. In Africa and Southeastern Nigeria, true prevalence is uncertain due to diagnostic gaps, but RA cases are increasingly reported as awareness grows. Autoimmune processes – generation of RF and ACPA autoantibodies, activation of T cells and macrophages, and a cytokine-driven inflammation – result in synovial damage and systemic effects. Understanding these mechanisms explains why specific biomarkers (RF, ACPA) are useful in diagnosis and why therapies targeting cytokines (like TNF or IL-6 inhibitors) are effective. In laboratory diagnosis, we identified the core tools: RF and ACPA testing for confirming autoantibodies, ESR and CRP for gauging inflammation, and newer panels for disease activity. In resource-constrained settings, basic assays can be performed with relatively low-cost methods (e.g. ESR by Westergren, RF by latex agglutination), but introducing more specific tests like anti-CCP is vital for improving diagnostic specificity. We provided practical outlines for these assays, emphasizing adherence to SOPs and quality control to ensure accuracy of results.

Chronic Inflammatory Response Syndrome (CIRS): A Review of Diagnosis, Immunological Mechanisms and Treatment Challenges

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Chronic Inflammatory Response Syndrome (CIRS) is an emerging and controversial condition characterized by a multi-system, multi-symptom illness triggered primarily by biotoxin exposure, particularly from water-damaged buildings (WDB). First described by Dr. Ritchie Shoemaker, CIRS is thought to result from a genetically predisposed individual’s inability to eliminate biotoxins effectively, leading to chronic immune activation. Despite increasing patient reports and clinical attention, CIRS remains a contentious diagnosis due to its complex symptomatology, lack of standardized diagnostic criteria, and limited recognition in mainstream medicine. This review aims to explore the underlying immunological mechanisms, examine the diagnostic challenges and controversies, and highlight the significant treatment gaps that impede effective management. A growing body of evidence supports the biological plausibility of CIRS, particularly involving innate immune dysregulation, complement activation, and cytokine imbalances. However, further research, standardized guidelines, and consensus in the medical community are urgently needed to validate and manage this debilitating condition.