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  2. Rheumatoid factor - Wikipedia

    en.wikipedia.org/wiki/Rheumatoid_factor

    High levels of rheumatoid factor (in general, above 20 IU/mL, 1:40, or over the 95th percentile; there is some variation among labs) occur in rheumatoid arthritis (present in 80%) and Sjögren's syndrome (present in 50-70% of primary forms of disease). [11] The higher the level of RF the greater the probability of destructive articular disease.

  3. Rh blood group system - Wikipedia

    en.wikipedia.org/wiki/Rh_blood_group_system

    Rh(D) status of an individual is normally described with a positive (+) or negative (−) suffix after the ABO type (e.g., someone who is A+ has the A antigen and Rh(D) antigen, whereas someone who is A− has the A antigen but lacks the Rh(D) antigen). The terms Rh factor, Rh positive, and Rh negative refer to the Rh(D

  4. Anti-rheumatoid factor antibodies are also increased. [95] In addition, cross-reactive anti-beef-collagen antibodies (IgG) may explain some rheumatoid arthritis (RA) incidences. [ 96 ] Although the presence of anti-beef collagen antibodies does not necessarily lead to RA, the RA association with Triticeae consumption is secondary to GSE and ...

  5. Autoimmune disease - Wikipedia

    en.wikipedia.org/wiki/Autoimmune_disease

    The specific DNA target sequence expressed is known as 1,25-(OH)2D3. [86] The expression of 1,25-(OH)2D3 can be induced by macrophages, dendritic cells, T-cells, and B-cells. [86] In the presence of 1,25-(OH)2D3, the immune system's production of inflammatory cytokines are suppressed and more tolerogenic regulatory T-cells are expressed. [86]

  6. Inflammation - Wikipedia

    en.wikipedia.org/wiki/Inflammation

    Factor XII (Hageman Factor) Liver: A protein that circulates inactively, until activated by collagen, platelets, or exposed basement membranes via conformational change. When activated, it in turn is able to activate three plasma systems involved in inflammation: the kinin system, fibrinolysis system, and coagulation system. Membrane attack complex

  7. Fatigue - Wikipedia

    en.wikipedia.org/wiki/Fatigue

    Fatigue can have significant negative impacts on quality of life. [157] Profound and debilitating fatigue is the most common complaint reported among individuals with autoimmune disease, such as systemic lupus erythematosus, multiple sclerosis, type 1 diabetes, celiac disease, Myalgic Encephalomyelitis/chronic fatigue syndrome , and rheumatoid ...

  8. Intrinsic factor - Wikipedia

    en.wikipedia.org/wiki/Intrinsic_factor

    14603 Ensembl ENSG00000134812 ENSMUSG00000024682 UniProt P27352 P52787 RefSeq (mRNA) NM_005142 NM_008118 RefSeq (protein) NP_005133 NP_032144 Location (UCSC) Chr 11: 59.83 – 59.85 Mb Chr 19: 11.72 – 11.74 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Intrinsic factor (IF), cobalamin binding intrinsic factor, also known as gastric intrinsic factor (GIF), is a glycoprotein ...

  9. COVID-19 pandemic - Wikipedia

    en.wikipedia.org/wiki/COVID-19_pandemic

    [11] [12] Pandemics and their ends are not well-defined, and whether or not one has ended differs according to the definition used. [11] [13] As of 30 December 2024, COVID-19 has caused 7,079,129 [5] confirmed deaths, and 18.2 to 33.5 million estimated deaths. [7] The COVID-19 pandemic ranks as the fifth-deadliest pandemic or epidemic in history.