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  • Title: Some clinico-immunological aspects in patients with ocular myasthenia gravis associated with inflammatory bowel disease.
    Author: Cojocaru IM, Cojocaru M, Tănăsescu R, Burcin C, Atanasiu AN, Mitu AC, Iliescu I, Dumitrescu L.
    Journal: Rom J Intern Med; 2008; 46(2):165-8. PubMed ID: 19284089.
    Abstract:
    The link between inflammatory bowel disease (IBD) and ocular myasthenia gravis (OMG) is thought to be related to the production of autoantibodies. The aim of this study was to determine the incidence of some antibodies in OMG patients with IBD. Sixty-four patients with IBD and neurological symptoms were examined neurologically and immunologically (41 men and 23 women, mean age 43-5.4 years); mean duration of IBD before the diagnosis of OMG was 7.5 years. The following immunological investigations were performed: anti-acetylcholine receptor antibodies (AChR Abs) (ELISA), anti-smooth muscle antibodies (ASMA) (indirect immunofluorescence), perinuclear anti-neutrophilic cytoplasmic antibodies (p-ANCA) (indirect immunofluorescence), carcinoembryonic antigen (CEA) (ELISA), Saccharomyces cerevisiae antibodies IgA and IgG (ASCA) (ELISA), peripheral lymphocyte counts, immature CD4, CD4/CD8 ratio. Five patients out of 64 with IBD presented OMG. The following antibodies were observed: anti-AChR in 4 OMG patients, ASMA in 4 OMG patients, p-ANCA in 4 OMG patients, CEA in 5 OMG patients, ASCA IgA and IgG in 3 OMG patients. Of 5 OMG patients 4 were positive for >3 antibodies. The peripheral lymphocytic counts were reduced in 5 OMG patients, a decline in CD8 cells and an increase in immature CD4 cells in 5 OMG patients, an increased CD4/CD8 ratio in 5 OMG patients were observed. The association of IBD with OMG was rare. Autoimmune dysregulation is the central defect in both MG and IBD. Further studies are required to define the nature of this association.
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