• Radiation Oncology Journal
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• v.15 no.3
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• pp.197-206
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• 1997

Purpose : Phospholipase D (PLD) catalyzes the hydrolysis of phosphatidylcholine to phosphatidic acid (PA) and choline. Recently, PLD has been drawing much attentions and considered to be associated with cancer Process since it is involved in cellular signal transduction. In this experiment, oleate-PLD activities were measured in various tissues of the living rats after whole body irradiation. Materials and Methods : The reaction mixture for the PLD assay contained $0.1\;\muCi\;1,2-di[1-^{14}C]palmitoyl$ phosphatidylcholine 0.5mM phosphatidylcholine, 5mM sodium oleate, $0.2\%$ taurodeoxycholate, 50mM HEPES buffer(pH 6.5), 10mM $CaCl_2$, and 25mM KF. phosphatidic acid, the reaction product, was separated by TLC and its radioactivity was measured with a scintillation counter. The whole body irradiation was given to the female Wistar rats via Cobalt 60 Teletherapy with field size of 10cmx loom and an exposure of 2.7Gy per minute to the total doses of 10Gy and 25Gy. Results : Among the tissues examined, PLD activity in lung was the highest one and was followed by kidney, skeletal muscle, brain, spleen, bone marrow, thymus, and liver. Upon irradiation, alteration of PLD activity was observed in thymus, spleen, lung, and bone marrow. Especially PLD activities of the spleen and thymus revealed the highest sensitivity toward $\gamma-rar$ with more than two times amplification in their activities In contrast, the PLD activity of bone marrow appears to be reduced to nearly $30\%$. Irradiation effect was hardly detected in liver which showed the lowest PLD activity. Conclusion : The PLD activities affected most sensitively by the whole-body irradiation seem to be associated with organs involved in immunity and hematopoiesis. This observation s1ron91y indicates that the PLD is closely related to the physiological function of these organs, Furthermore, radiation stress could offer an important means to explore the phenomena covering from cell Proliferation to cell death on these organs.

• Journal of Veterinary Clinics
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• v.7 no.2
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• pp.451-469
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• 1990

The present study was carried out to investigate whether the aloe had a radioprotective effect in mice exposed to cobalt-60 gamma radiation or not. The survival ratio of mice for 30 days, hematopoiesis of blood-forming stem cells by spleen colony assay, chromosomal aberration frequency of bone marrow cells and histopathological findings of bone marrow were investigated. The survival ratios of aloe administered groups with concentration of 250, 500, 1,000 and 1,500mg for 3 days before irradiation and control group in cobalt-60 gamma irradiated mice(700rads whole body irradiation, dose rate of 50rads/min.) were 77.4, 79.3, 80.6, 90.0 and 53.1％, respectively. The survival ratios of pre-irradiation aloe administered groups were superior to those of post-irradiation aloe groups and control group. In spleen colony assay, Aloe vera administration before irradiation enhanced the recoveries of numbers of blood-forming stem cells of bone marrow of irradiated mice. There were decreased chromosomal aberrations of bone marrow cells at the first day after irradiation in aloe administered groups compared to that of control group. Histopathological findings in the bone marrow of irradiated mice were hypocellularity due to the depletion of myelocytes, abundant of fat vacuoles and these changes were weakened in aloe administered groups compared to that of control group.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.22 no.5
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• pp.431-435
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• 2009

The apparatus has been fabricated using the laser diode and microprocessor unit. The apparatus used a InGaAlP laser diode for laser medical therapy and was designed for a pulse width modulation type to increase stimulation effects. To raise the stimulus effect of the human body, the optical irradiation frequency could be set up. The study has executed in-vivo experiment by employing our own developed laser diode irradiation system to investigate the effects of the InGaAlP laser diode irradiation on the wound healing as a preliminary study aimed at the application of InGaAlP laser diode to wound healing of human skin injury. The study cut out whole skin layers of Sprague-Dawley rat on the back part in 1 cm circle and observed developing effects after executing light irradiation for 9 days, and in result it is found that the light irradiation rat showed earlier wound healing than non-irradiation rat during the experimental period. In addition, there are some differences found regarding the healing process between laser diode irradiated rats and non-irradiated ones.

• Journal of Radiation Protection and Research
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• v.33 no.3
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• pp.93-97
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• 2008

The purpose of this study reported here was to investigate the ability of Bu-Zhong-Yi-Qi-Tang (BZYQT), known to elevate hematopoietic functions, to protect mice undergoing treatment with whole body single gamma-irradiation. BZYQT was given (25 mg/kg B.W.) intraperitoneally at 36 and 12 hours before irradiation and 30 minute and 24 hours after irradiation. Recovery of neutrophil and lymphocyte counts was significantly stimulated by extract of BZYQT. Stimulated recovery by the extract from the BZYQT was also observed in thrombocyte. However, the anti-radiation effect of erythrocyte, hemoglobin and hematocrit was not as significant as that of leukocyte. Further studies are needed to better characterize the protective nature of BZYQT extract and its ingredients.

• Journal of Environmental Health Sciences
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• v.16 no.1
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• pp.55-65
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• 1990

This study was carried out to investigate the effects on sister chromatid exchanges (SCEs) and chromosome aberrations in PHA or LPS stimulated mouse spleen and bone marrow lymphocytes after an acute whole body irradiation. Frequencies of sister chromatid exchanges were significantly increased with the increased dose(from zero to 400tad) but there was no differences between B-cell and T-cell. By times, the maximum induced SCE levels was observed at 12 hours after irradiation and then returned to base level at one day in 100rad group and three day in 400rad group. There was a significant difference in chromosome aberration with increasing exposure. X-ray irradiated chromosome aberration was long lived relative to SCE. This results show that counting the incidence of SCE may not provide a sensitive system for detecting X-ray exposure.

• Journal of radiological science and technology
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• v.20 no.1
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• pp.91-96
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• 1997

Male rats of Albino strain were divided into four groups. The radioprotective effect of treatment with S-2(3-aminopropylamino)ethylphosphorothioic acid(WR-2721) using the dose of 200 mg/kg by intraperitonial injection on rats for 20 min prior to whole body x-ray irradiation (8 Gy) was studied. The harzardous effects of x-ray irradiation were greatly corrected In the treated group. The concentrations of total serum cholesterol, HDL-cholesterol, triglyceride, and phospholipid were greatly affected, showing insignificant changes in the treated group of animals. The drastic hyperglycemic effect of x-ray irradiation in the untreated group decreased to a normal level. These results show the potentiality of WR-2721 as a radioprotective agent.

• Clinical and Experimental Reproductive Medicine
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• v.33 no.1
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• pp.35-35
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• 2006

Objective: The purposes of the present study were to investigate the effect of ${\gamma}$-radiation on the expression of inhibin-${\alpha}$ proteins and genes for inhibin ${\alpha}$, ${\beta}A$, and ${\beta}B$ in the ovary. Methods: Immature mice were whole-body ${\gamma}$-irradiated with 25% of a lethal dose. At time 0, 3, 6, 12, and 24 hours after the irradiation, the ovaries were collected and used for immunohistochemistry for inhibin-${\alpha}$, and RT_PCR for inhibin-${\alpha}$, ${\beta}A$, and ${\beta}B$. Results: The expression of the immunoreactive inhibins-${\alpha}$ was maintained at 12 hours post-irradiation and reduced thereafter. The expression of inhibin-${\alpha}$ mRNA was significantly increased with the time after the irradiation. However there were no significant changes in the expression of ${\beta}A$ and ${\beta}B$ mRNAs. Conclusion: It might be thought that inhibin acts as one of the regulatory factors in the ${\gamma}$-radiation-induced follicular atresia in mice

• The Korean Journal of Physiology
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• v.6 no.1
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• pp.11-18
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• 1972

In an attempt to observe the Possible radioprotective actions of single or combined application of reduced glutathione (GSH) and cold exposure in mammals, the albino mouse was subjected to GSH injection, cold exposure at $-1{\pm}0.2C$ and whole-body X-irradiation with 900r either singularly or in combination, or the X-irradiation following the cold exposure and/or GSH injection. The levels of intrinsic NP-SH and NP-SS of the liver, brain and heart were measured at one hour after each application, and the results were compared with the control, i.e., non-irradiated and non-cold exposed normal animal. NP-SH was measured by the Ellman's method, and NP-SS was measured by the electrolytic reduction method described by Dohan and Woodward. The results thus obtained are summarized as follows: 1) The levels of NP-SH in the liver, brain and heart of the normal mouse was $6.35{\pm}0.61,\;2.65{\pm}0.15\;and\;3.17{\pm}0.10{\mu}\;mol/gm\;wet\;wt.$, respectively, and NP-SS was $3.09{\pm}0.11,\;2.95{\pm}0.20\;and\;0.18{\pm}0.24{\mu}\;mol/gm\;wet\;wt.$, respectively. 2) Though there were some degrees of difference among the tissues studied, a general tendency of (1) elevated NP-SH and NP-SS levels in the GSH injection group, (2) similar or slightly elevated NP-SH and NP-SS levels in the cold-exposed group, and (3) markedly decreased levels of NP-SH and NP-SS in the X-irradiated group, was observed. When GSH was injected prior to the X-irradiation, NP-SH and NP-SS in all the tissues studied showed generally higher values than in the group where the X-irradiation was given alone, and the values were close to the normal. In the group where the cold exposure was applied immediately after the X-irradiation, no significant difference was observed in the NP-SH and NP-S5 levels comparing with the X-irradiation group. On the contrary, when GSH was injected immediately prior to the X-irradiation or cold exposure, NP-SH and NP-SS levels were either similar to, or higher than, the normal value.

• Journal of Yeungnam Medical Science
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• v.4 no.2
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• pp.89-96
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• 1987

Using same TDE factors, the authors studied the effects of whole abdominal irradiation on body weight and peripheral blood picture in $30{\pm}3$ day old mice. Fractions of 100 and 200 cGy were given five times a week to the final TDF factors l7, 33, and 49. Total 80 mice were irradiated with orthovoltage x-ray machine. Our results can be summarized as follows : There were no significant differences by sex. Body weight was progressively decreased by the duration for irradiation, but no remarkable difference by fractional dose. Hemoglobin level showed no remarkble change by fractional dose or TDF factors. Leukopenic changes showed that severity of decrease seems to be more related to TDF factors. There were no significant changes of differential count by TDF factors of total doses.

• International Journal of Oral Biology
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• v.37 no.1
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• pp.1-7
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• 2012

Opioid receptors have been pharmacologically classified as ${\mu}$, ${\delta}$, ${\kappa}$ and ${\varepsilon}$. We have recently reported that the antinociceptive effect of morphine (a ${\mu}$-opioid receptor agonist), but not that of ${\beta}$-endorphin (a novel ${\mu}/{\varepsilon}$-opioid receptor agonist), is attenuated by whole body irradiation (WBI). It is unclear at present whether WBI has differential effects on the antinociceptive effects of ${\mu}-$, ${\delta}-$, ${\kappa}-$ and ${\varepsilon}$-opioid receptor agonists. In our current experiments, male ICR mice were exposed to WBI (5Gy) from a $^{60}Co$ gamma-source and the antinociceptive effects of opioid receptor agonists were assessed two hours later using the hot water ($52^{\circ}C$) tail-immersion test. Morphine and $D-Ala^2$, $N-Me-Phe^4$, Gly-olenkephalin (DAMGO), [$D-Pen^2-D-Pen^5$] enkephalin (DPDPE), trans-3,4-Dichloro-N-methyl-N-[2-(1-pyrrolidinyl)-cyclohexyl]-benzeneacetamide (U50,488H), and ${\beta}$-endorphin were tested as agonists for ${\mu}$, ${\delta}$, ${\kappa}$, and ${\varepsilon}$-opioid receptors, respectively. WBI significantly attenuated the antinociceptive effects of morphine and DAMGO, but increased those of ${\beta}$-endorphin. The antinociceptive effects of DPDPE and U50,488H were not affected by WBI. In addition, to more preciously understand the differential effects of WBI on ${\mu}-$ and ${\varepsilon}$-opioid receptor agonists, we assessed pretreatment effects of ${\beta}$-funaltrexamine (${\beta}$-FNA, a ${\mu}$-opioid receptor antagonist) or ${\beta}$-$endorphin_{1-27}$ (${\beta}$-$EP_{1-27}$, an ${\varepsilon}$-opioid receptor antagonist), and found that pretreatment with ${\beta}$-FNA significantly attenuated the antinociceptive effects of morphine and ${\beta}$-endorphin by WBI. ${\beta}$-$EP_{1-27}$ significantly reversed the attenuation of morphine by WBI and significantly attenuated the increased effects of ${\beta}$-endorphin by WBI. The results demonstrate differential sensitivities of opioid receptors to WBI, especially for ${\mu}-$ and ${\varepsilon}$-opioid receptors.