Electron probe X-ray microanalysis of boar and inobuta testes after the Fukushima accident

Hideaki Yamashiro, Yasuyuki Abe, Gohei Hayashi, Yusuke Urushihara, Yoshikazu Kuwahara, Masatoshi Suzuki, Jin Kobayashi, Yasuyuki Kino, Tomokazu Fukuda, Bin Tong, Sachio Takino, Yukou Sugano, Satoshi Sugimura, Takahisa Yamada, Emiko Isogai, Manabu Fukumoto

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

We aimed to investigate the effect of chronic radiation exposure associated with the Fukushima Daiichi Nuclear Power Plant (FNPP) accident on the testes of boar and inobuta (a hybrid of Sus scrofa and Sus scrofa domestica). This study examined the contamination levels of radioactive caesium (Cs), especially 134Cs and 137Cs, in the testis of both boar and inobuta during 2012, after the Fukushima accident. Morphological analysis and electron-probe X-ray microanalysis (EPMA) were also undertaken on the testes. The 134Cs and 137Cs levels were 6430 ± 23 and 6820 ± 32 Bq/kg in the boar testes, and 755 ± 13 and 747 ± 17 Bq/kg in the inobuta testes, respectively. The internal and external exposure of total 134Cs and 137Cs in the boar testes were 47.1 mGy and 176.2 mGy, respectively, whereas in the inobuta testes, these levels were 6.09 mGy and 59.8 mGy, respectively. Defective spermatogenesis was not detected by the histochemical analysis of radiation-exposed testes for either animal. In neither animal were Cs molecules detected, using EPMA. In conclusion, we showed that adverse radiation-induced effects were not detected in the examined boar and inobuta testes following the chronic radiation exposure associated with the FNPP accident.

Original languageEnglish
Pages (from-to)i42-i47
JournalJournal of radiation research
Volume56
DOIs
Publication statusPublished - 2015 Dec 1

Keywords

  • EPMA
  • Fukushima Daiichi Nuclear Power Plant
  • boar
  • inobuta
  • radioactive caesium
  • testis

ASJC Scopus subject areas

  • Radiation
  • Radiology Nuclear Medicine and imaging
  • Health, Toxicology and Mutagenesis

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