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Decreased expression of CHST-12, CHST-13, and UST in the proximal interphalangeal joint cartilage of school-age children with Kashin-Beck disease: an endemic osteoarthritis in China caused by selenium deficiency
Umeå University, Faculty of Medicine, Department of Integrative Medical Biology (IMB).ORCID iD: 0000-0002-1710-7715
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2019 (English)In: Biological Trace Element Research, ISSN 0163-4984, E-ISSN 1559-0720, Vol. 191, no 2, p. 276-285Article in journal (Refereed) Published
Abstract [en]

The objective of this study is to investigate changes in the expression of enzymes involved in chondroitin sulfate (CS) sulfation in distal articular surface of proximal interphalangeal joint isolated from school-age children patients with Kashin-Beck disease (KBD), using normal children as controls. Articular cartilage samples were collected from four normal and four KBD children (7-12 years old), and these children were assigned to control and KBD groups. Hematoxylin and eosin (H&E), toluidine blue (TB), and immunohistochemical (IHC) stainings were utilized to evaluate changes in joint pathology and expression of enzymes involved in CS sulfation, including carbohydrate sulfotransferase 12 (CHST-12), carbohydrate sulfotransferase 13 (CHST-13), and uronyl 2-O-sulfotransferase (UST). The correspondence results were examined by semi-quantitative analysis. Compared with the control group, the KBD group showed the following: a significant decrease of total chondrocytes in superficial, middle, and deep layers and deposition of sulfated glycosaminoglycans in extracellular matrix of KBD cartilage were observed; positive staining chondrocytes of CHST-12, CHST-13, and UST were significantly less in superficial zone of KBD cartilage; and CHST-13 positive staining chondrocytes was reduced in deep zone of KBD cartilage. In contrast, the positive staining rates of CHST-12, CHST-13, and UST in KBD were significantly higher than those in the control group. The decreased expression of these enzymes and the physiologic compensatory reaction may be the signs of early-stage KBD. The alterations of CS structure modifying sulfotransferases in finger articular cartilage might play an important role in the onset and pathogenesis of school-age KBD children.

Place, publisher, year, edition, pages
New York: Springer, 2019. Vol. 191, no 2, p. 276-285
Keywords [en]
Child cartilage, Chondroitin sulfate, Kashin–Beck disease, Selenium deficiency, Sulfation, Sulfotransferases
National Category
Cell and Molecular Biology
Identifiers
URN: urn:nbn:se:umu:diva-155834DOI: 10.1007/s12011-019-1642-9ISI: 000482487100002PubMedID: 30661165OAI: oai:DiVA.org:umu-155834DiVA, id: diva2:1283543
Available from: 2019-01-29 Created: 2019-01-29 Last updated: 2019-10-10Bibliographically approved

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Qu, Chengjuan

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