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Associations between selenium content in hair and Kashin-Beck Disease/Keshan Disease in children in Northwestern China: a prospective cohort study
School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission of People's Republic of China, Xi'an Jiaotong University, Xi'an, China..
School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission of People's Republic of China, Xi'an Jiaotong University, Xi'an, China..
School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission of People's Republic of China, Xi'an Jiaotong University, Xi'an, China..
School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission of People's Republic of China, Xi'an Jiaotong University, Xi'an, China..
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2018 (English)In: Biological Trace Element Research, ISSN 0163-4984, E-ISSN 1559-0720, Vol. 184, no 1, p. 16-23, article id 28983831Article in journal (Refereed) Published
Abstract [en]

The objective of this study was to investigate the relationship between selenium content in hair and the incidence of Kashin-Beck disease (KBD) and Keshan disease (KD) in China. A prospective cohort study was conducted among children aged 5-12 years with different levels of low-selenium (group 1, Se ≤ 110 ng/g; group 2, 110 < Se ≤ 150 ng/g; and group 3, 150 < Se ≤ 200 ng/g) or selenium-supplemented (group 4, Se > 200 ng/g) exposure. A person-years approach was used to calculate the incidence and rate of positive clinical signs. Relative risk (RR), attributable risk, and etiologic fraction were used to determine the strength of association between selenium and disease incidence. Seven new KBD cases were diagnosed during 3-year follow-up. Positive clinical signs of KBD were found in 17.78 (95% confidence interval [CI] 14.27-21.29) cases per 100 person-years in group 1, 13.28 (9.82-16.74) in group 2, 12.95 (9.34-16.56) in group 3, and 8.18 (5.50-10.85) in group 4. Compared with group 4, the RR (95% CI) of groups 1, 2, and 3 were 2.17 (1.48-3.19), 1.62 (1.07-2.47), and 1.58 (1.03-2.43), respectively. Positive clinical signs of KD were 25.90 (18.62-33.18) cases per 100 person-years in group 1, 5.66 (1.26-10.06) in group 2, 4.60 (0.20-9.00) in group 3, and 14.62 (8.54-20.69) in group 4. Compared with group 4, the RR (95% CI) were 1.77 (1.07-2.93), 0.39 (0.16-0.93), and 0.31 (0.11-0.89), respectively. In children, the onset of KBD was negatively correlated with selenium content within a certain range. However, there may be a U-shaped association between selenium content and KD in children.

Place, publisher, year, edition, pages
Springer, 2018. Vol. 184, no 1, p. 16-23, article id 28983831
Keywords [en]
Cohort study, Kashin-Beck disease, Keshan disease, Selenium
National Category
Pediatrics Public Health, Global Health, Social Medicine and Epidemiology Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Research subject
Pediatrics
Identifiers
URN: urn:nbn:se:umu:diva-140367DOI: 10.1007/s12011-017-1169-xISI: 000434723900003PubMedID: 28983831OAI: oai:DiVA.org:umu-140367DiVA, id: diva2:1147739
Available from: 2017-10-08 Created: 2017-10-08 Last updated: 2018-08-27Bibliographically approved

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Lammi, Mikko J

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Department of Integrative Medical Biology (IMB)
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PediatricsPublic Health, Global Health, Social Medicine and EpidemiologyMedical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)

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