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ludc web

Lena Eliasson

Principal investigator

ludc web

Diagnostic potential of miR-483 family for IGF-II producing non-islet cell tumor hypoglycemia

Author

  • Mototsugu Nagao
  • Izumi Fukuda
  • Akira Asai
  • Jonathan L.S. Esguerra
  • Naomi Hizuka
  • Lena Eliasson
  • Hitoshi Sugihara

Summary, in English

Objective: In insulin-like growth factor II (IGF-II) producing non-islet cell tumor hypoglycemia (NICTH), high molecular weight forms of IGF-II (big IGF-II) are produced as a cause of spontaneous hypoglycemia. MicroRNA (miRNA)-483 family, encoded in an intron lesion of IGF2 gene, is suggested to be co-expressed with IGF-II. Here, we tested whether serum miR-483-5p and -3p levels are associated with the presence of big IGF-II in NICTH. Design: Serum samples from patients who were suspected to have IGF-II producing NICTH (n = 42) were tested. MiR-483-5p and -3p levels were evaluated using quantitative PCR. IGF-II level was analyzed using ELISA. The presence of big IGF-II was identified by Western blotting. Results: Big IGF-II was detected in the sera of 32 patients. MiR-483-5p (P = 0.0015) and -3p (P = 0.027) levels were significantly higher in sera with big IGF-II (n = 32) than in those without (n = 10), whereas serum IGF-II level (P = 0.055) was not significantly different between the groups. The median serum concentration of miR-483-5p was ~10 times higher than that of miR-483-3p. Although a strong correlation was observed between the two miRNAs (r = 0.844, P < 0.0001), but neither of which was correlated with serum IGF-II level. The areas under the receiver operating characteristic curves of miR-483-5p (0.853) and -3p (0.722) were higher than that of IGF-II (0.694) for detecting the presence of big IGF-II. Conclusion: The associations of serum miR-483-5p and -3p levels with the presence of big IGF-II suggest the diagnostic potential of these miRNAs for IGF-II producing NICTH.

Department/s

  • Diabetes - Islet Cell Exocytosis
  • EXODIAB: Excellence of Diabetes Research in Sweden
  • Department of Clinical Sciences, Malmö

Publishing year

2021-01-01

Language

English

Pages

41-49

Publication/Series

European Journal of Endocrinology

Volume

184

Issue

1

Document type

Journal article

Publisher

Society of the European Journal of Endocrinology

Topic

  • Clinical Laboratory Medicine

Status

Published

Research group

  • Diabetes - Islet Cell Exocytosis

ISBN/ISSN/Other

  • ISSN: 1479-683X