Immunological similarities between primary sclerosing cholangitis and chronic sclerosing sialadenitis: Report of the overlapping of these two autoimmune diseases

Koichi Tsuneyama, Katsuhiko Saito, Boris H. Ruebner, Ichiro Konishi, Yasuni Nakanuma, M. Eric Gershwin

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Primary sclerosing cholangitis (PSC) is characterized by destructive inflammation and fibrosis affecting the bile ducts. The etiology of PSC is still unknown, although lymphocytic infiltration in the portal areas suggests an immune-mediated destruction of the bile ducts. Patients with one autoimmune disease often suffer from one or more other autoimmune diseases. It is well known that there is a close relationship between PSC and inflammatory bowel disease, particularly ulcerative colitis(UC). However, the pathological findings in UC and other overlap diseases do not resemble those of PSC. In the present study, we report a patient with chronic sclerosing sialadenitis (Kuttner's tumor) and PSC. It is compared the sclerosing changes in both salivary glands and bile ducts histologically. In addition, the expression pattern of mast cell tryptase, b-FGF, and HLA-DR were examined in both tissues immunohistochemically. Histological features of sclerosing change in both salivary and bile ducts were quite similar. Marked mast cell infiltration and b-FGF expression were seen in the sclerosing areas in both tissues. In active inflammatory areas of the salivary glands, HLA-DR expression was also seen. We hypothesized that similar immune reactions occur in both the salivary gland and bile ducts and are responsible for the fibrosis that follows.

Original languageEnglish (US)
Pages (from-to)366-372
Number of pages7
JournalDigestive Diseases and Sciences
Volume45
Issue number2
DOIs
StatePublished - 2000

Keywords

  • B-FGF
  • Chronic sclerosing sialadenitis
  • HLA-DR
  • Mast cell
  • Primary sclerosing cholangitis

ASJC Scopus subject areas

  • Gastroenterology

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