Kiyonori Yamaoka
RMIT University
IrradiationInternal medicineEndocrinologyMolecular biologyRadiochemistryChemistrySuperoxide dismutaseOxidative stressInhalationAntioxidantCatalaseLipid peroxideLow doseEnvironmental scienceGlutathioneRadonBiochemistryMedicineBiologyPharmacology
172Publications
28H-index
2,122Citations
Publications 174
Newest
#1Takahiro Kataoka (RMIT: RMIT University)H-Index: 16
#2Hina Shuto (RMIT: RMIT University)H-Index: 1
Last. Hiroaki Terato (Okayama University)
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Radon inhalation decreases the level of lipid peroxide (LPO); this is attributed to the activation of antioxidative functions. This activation contributes to the beneficial effects of radon therapy, but there are no studies on the risks of radon therapy, such as DNA damage. We evaluated the effect of radon inhalation on DNA damage caused by oxidative stress and explored the underlying mechanisms. Mice were exposed to radon inhalation at concentrations of 2 or 20 kBq/m3 (for one, three, or 10 day...
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#1Takahiro Kataoka (RMIT: RMIT University)H-Index: 16
#2Norie Kanzaki (JAEA: Japan Atomic Energy Agency)H-Index: 5
Last. Fumihiro Mitsunobu (Okayama University)H-Index: 22
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#1Akihiro Sakoda (JAEA: Japan Atomic Energy Agency)H-Index: 7
#2Yuu Ishimori (JAEA: Japan Atomic Energy Agency)H-Index: 13
Last. Kiyonori Yamaoka (RMIT: RMIT University)H-Index: 28
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It is held that the skin dose from radon progeny is not negligibly small and that introducing cancer is a possible consequence under normal circumstances as there are a number of uncertainties in terms of related parameters such as activity concentrations in air and water, target cells in skin, skin covering materials, and deposition velocities. An interesting proposal has emerged in that skin exposure to natural radon-rich thermal water as part of balneotherapy can produce an immune response to...
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#1Tetsuya Nakada (RMIT: RMIT University)H-Index: 1
#2Takahiro Kataoka (RMIT: RMIT University)H-Index: 16
Last. Kiyonori Yamaoka (RMIT: RMIT University)H-Index: 28
view all 8 authors...
The forced swim test (FST) induces immobility in mice. Low-dose (high-dose-rate) X-irradiation inhibits FSTinduced immobility in mice due to its antioxidative function. We evaluated the effects of low-dose γ-irradiation at a low-dose-rate on the FST-induced depletion of antioxidants in mouse organs. Mice received whole-body low-dose-rate (0.6 or 3.0 mGy/h) of low-dose γ-irradiation for 1 week, followed by daily FSTs (5 days). The immobility rate on day 2 compared to day 1 was significantly lower...
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#1Shota NaoeH-Index: 1
#2Takahiro KataokaH-Index: 16
Last. Kiyonori YamaokaH-Index: 28
view all 10 authors...
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#1Takahiro KataokaH-Index: 16
#2Norie KanzakiH-Index: 5
Last. Kiyonori YamaokaH-Index: 28
view all 11 authors...
Source
#1Takahiro Kataoka (RMIT: RMIT University)H-Index: 16
#2Norie Kanzaki (JAEA: Japan Atomic Energy Agency)H-Index: 5
Last. Kiyonori Yamaoka (RMIT: RMIT University)H-Index: 28
view all 11 authors...
Radon inhalation activates antioxidative functions in mouse organs, thereby contributing to inhibition of oxidative stress-induced damage. However, the specific redox state of each organ after radon inhalation has not been reported. Therefore, in this study, we evaluated the redox state of various organs in mice following radon inhalation at concentrations of 2 or 20 kBq/m3 for 1, 3 or 10 days. Scatter plots were used to evaluate the relationship between antioxidative function and oxidative stre...
1 CitationsSource
#1Takahiro Kataoka (RMIT: RMIT University)H-Index: 16
#2Hina Shuto (RMIT: RMIT University)H-Index: 1
Last. Kiyonori Yamaoka (RMIT: RMIT University)H-Index: 28
view all 10 authors...
The forced swim test (FST) is a screening model for antidepressant activity; it causes immobility and induces oxidative stress. We previously reported that radon inhalation has antidepressant-like effects in mice potentially through the activation of antioxidative functions upon radon inhalation. This study aimed to investigate the effect of prior and post low-dose X-irradiation (0.1, 0.5, 1.0 and 2.0 Gy) on FST-induced immobility and oxidative stress in the mouse brain, and the differences, if ...
2 CitationsSource
#1Yusuke Kobashi (RMIT: RMIT University)H-Index: 2
#2Takahiro Kataoka (RMIT: RMIT University)H-Index: 16
Last. Kiyonori Yamaoka (RMIT: RMIT University)H-Index: 28
view all 9 authors...
Radon therapy has been traditionally performed globally for oxidative stress-related diseases. Many researchers have studied the beneficial effects of radon exposure in living organisms. However, the effects of thoron, a radioisotope of radon, have not been fully examined. In this study, we aimed to compare the biological effects of radon and thoron inhalation on mouse organs with a focus on oxidative stress. Male BALB/c mice were randomly divided into 15 groups: sham inhalation, radon inhalatio...
1 CitationsSource
#1Kiyonori Yamaoka (RMIT: RMIT University)H-Index: 28
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