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  • Title: [A case of protein-losing gastroenteropathy in association with mixed connective tissue disease which was successfully treated with cyclophosphamide pulse therapy].
    Author: Nosho K, Takahashi H, Ikeda Y, Hanai Y, Mizukoshi T, Murakami R, Tokunou T, Kawahito Y, Makiguchi Y, Imai K, Inomata S, Saito T, Ikeda T.
    Journal: Ryumachi; 1998 Dec; 38(6):818-24. PubMed ID: 10047720.
    Abstract:
    A 47-year-old man had been given a diagnosis of mixed connective tissue disease (MCTD) on 1987 when he had presented with Raynaud's phenomenon, polyarthralgia, sclerodactyly, and a high titre of anti-RNP antibody. Once his symptoms had improved following the administration of prednisolone orally and the treatment was discontinued since 1995. He noticed dyspnea and chest pain in February 1997. The bilateral pleural effusion was pointed out in the local hospital and he was admitted to our hospital in March 1997 for further examination. In addition to pleural effusion and ascites, laboratory studies revealed hypoalbuminemia and low serum levels of complements. Renal and liver function tests were normal and the urine gave a trace test for protein. The presence of protein loss in the gut was confirmed by an elevated alpha 1-antitrypsin clearance and 99mTc-albumin scintigraphy showing abnormal radioactivity in the gastrointestinal tract. Although endoscopic examination showed no abnormal findings macroscopically and gastrointestinal biopsies revealed nonspecific inflammation only, immunofluorescent studies demonstrated deposits of C 3, C 4 and IgG in the stomach, colon, and pleura. These findings supported the pathogenesis that immune deposits in tissues caused protein-losing gastroenteropathy (PLGE) in MCTD. Intravenous administration of cyclophosphamide started since July 1997, while the high-dose corticosteroid therapy including methylprednisolone pulse therapy were not effective. Hypoalbuminemia and low serum levels of complements improved remarkably and the pleural effusion and ascites disappeared after cyclophosphamide pulse therapy four times monthly. Cyclophosphamide pulse therapy should be considered as a possibly effective treatment for PLGE in association with collagen disease resistant to corticosteroid therapy.
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