• 한국환경보건학회지
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• 제21권3호
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• pp.28-37
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• 1995

This study is performed to find out the effects of selenium against cadmium toxicity. The experimental mice were divided into 6 gruops such as control group, cadmium alone treatment group, selenium treatment groups and two simultaneous treatment groups of selenium and cadmium. Mice were given intraperitoneal administration with two dosage of sodium selenite such as 1.0 mg/kg, 2.5 mg/kg body weight and cadmium chloride was administered 3.0 mg/kg body weight. After giving the challenge dose, the concentration of cadmium and metallothionein and histopathological change of liver and kidney were determined. The results were summarized as follows on 1. The simultaneously administration of selenium and cadmium significantly more decreased cadmium concentration in kidney and iiver tissues compared to the administration of cadmium only(P<0.05). 2. The simultaneously administration of selenium and cadmium more increased metallothionein concentration compared to administration of cadmium only. 3. The simultaneously administration of selenium and cadmium more decreased cadmium concentration in urine compared to the administration of cadmium only. 4. When liver and kidney tissues were observed with optical microscope, no obvious changes were visible in those tissues.

• 한국환경보건학회지
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• 제16권1호
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• pp.29-43
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• 1990

The purpose of this study is to investigate the vairous change in the toxicity of cadmium by the simultaneous administration of selenium and zinc, which have been reported to change -the toxicity of cadmium through the interaction with cadmium, to rat. For the experiment, 42 rats of Sprague-Dawley strain were used. The experimental groups were divided into 6 groups: a control group, a cadmium (100ppm) alone treatment group, a cadmium (100ppm) and zinc (100ppm) combined treatment group, and three cadmium (100ppm), zinc (100ppm) and selenium (1, 4, and 8ppm) combined treatment groups. The rats were allocated seven to each group and observed for seven weeks. The results of experiment are as follows: 1. The food consumptions of each group were reduced, compared with a control group, especially, in a cadmium and zinc combined treatment group and a cadmium $\cdot$ zinc and selenium(1ppm) combined treatment group to the significant level compared with a control group (p < 0.05). The water consumptions of each group were reduced to the very significant level compared with a control group (p < 0.01). The feed efficiencies of each group were lower than a control group, and among them the highest group was cadmium $\cdot$ zinc and selenium (8ppm) combined treatment group as 90% of a control group. 2. In all groups, the weight gains were highest in the second week and the total weight gains were reduced to the very significant level compared with a control group (p < 0.01). 3. In all groups, the relative weights of liver were reduced, compared with a control group, especially, a cadmium alone treatment group was reduced to the significant level (p < 0.05). The relative weight of kidney was high to the significant level in a cadmium alone treatment group (p < 0.05) compared with a control group. In all groups, the relative weights of testis were reduced, compared with a control group, but the levels were not significant. 4. The accumulation of cadmium was highest in the kidney and the order of height was in liver, testis and blood, respectively. In all groups, the amount of cadmium accumulation was high to the very significant level compared with a control group (p < 0.01). In liver, the amount of acdmium accumulation in. a cadmium alone treatment group was high to the significant level compared with a cadmium $\cdot$ zinc and selenium (8ppm) combined treatment group (p < 0.05), and in kidney, the amount of cadmium accumulation in a cadmium alone tretment group was high to the very significant level compared with the cadmium $\cdot$ zinc and selenium (4, 8ppm) combined treatment groups (p < 0.01). However, in testis, among the treatment groups the level was not significant and in blood, a cadmium alone treatment group was low to the significant level compared with the cadmium $\cdot$ zinc and selenium (4, 8ppm) combined treatment groups (p < 0.05). 5. According to the histopathological finding on the testis, some of the seminiferous tubules of a group treated with cadmium alone showed severe necrosis and atrophy. But the testis of cadmium $\cdot$ zinc and selenium (8ppm) combined treatment group was similar to that of a control group. From the results of this study, it can be concluded that the repeated simultaneous oral administration of large doses of selenium with the cadmium produces the partial amelioration of cadmium toxicity, whereas zinc does not.

• 한국환경보건학회지
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• 제18권1호
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• pp.95-104
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• 1992

The influence of selenium to several toxic effects of cadmum, including lethality has been shown following pretreatment with cadmium, zinc and seleniurm Five groups of rats, each consisting of 16 rats, were studied and each group was divided into four subgroups, 4 rats for each subgroup. After subcutaneous pretreatment during 5 days with saline, CdCl$_{2}$ (0.5mg/kg, ZnCl$_{2}$ (13.0mg/kg) and $Na_{2}SeO_{3}$(1.0mg/kg), rats were given intraperitioneal administration of various dosage of or cadium of cadmium and selenium. After giving the challenge dose, cadmium and metallothionein(MT) concentrations were determined in liver and kidney The concentration of cadmium in liver and kideny increased proportionally to the increase of challenge dosage. The simultaneous administration of cadmium and selenium significantly more decrease cadmium concentrations in liver and kidney than those of the administration of cadmium only. However, MT concentrations in liver and kideny were increased by the pretreatment of cacmium, zinc and selenium. Our results suggest that increasing cadmium concentrations, gradully accumulating in the tissues of liver and kidney as a result of the pretreatment, served to induced the synthesis of MT, thus making them resistant to the challenge from cadmium.

• Journal of Microbiology and Biotechnology
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• 제34권6호
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• pp.1328-1339
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• 2024

Cadmium (Cd) is a prevalent environmental contaminant that poses a potential hazard to the health of both humans and animals. In this study, biosynthesized selenium-enriched Lactobacillus plantarum and selenium nanoparticles (SeNPs) were developed and evaluated for their protective effects against Cd-induced hepatic injury in mice through oral administration for 4 weeks. Cadmium exposure resulted in severe impairment of liver function, as evidenced by increased levels of serum markers of liver injury and, oxidative stress and significant damage to liver tissue, and a notable decrease in the diversity of the intestinal microbiota. Oral administration of Se-enriched L. plantarum (LS) reduced cadmium accumulation in the liver by 49.5% and, restored other cadmium-induced damage markers to normal levels. A comparison of the effects with those of L. plantarum (L) and SeNPs isolated from LS revealed that LS could more effectively alleviate hepatic oxidative stress and reduce the intrahepatic inflammatory responses of the liver, further protecting against cadmium-induced liver injury. These findings suggest that the development of LS may be effective at protecting the liver and intestinal tract from cadmium-induced damage.

• 한국영양학회:학술대회논문집
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• 한국영양학회 1992년도 춘계심포지움 및 발표논문 초록
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• pp.26-26
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• 1992

• 한국환경보건학회지
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• 제23권4호
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• pp.26-32
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• 1997

To evaluate the cytogenetic toxicity, of cadmium and the reducing effect of selenium or zinc on cadmium toxicity, the induction of SCEs in cultured human lymphocytes by the concentraion of 0.5 $\mu$M to 16.0 $\mu$M of cadmium chloride and those of cadmium chloride combined with sodium selenite or zinc chloride 1.2 $\mu$M, respectively was investigated. The induction of SCEs by cadmium chloride in the range of 0.5 $\mu$M to 16.0 $\mu$M increased in a dose-dependent manner. A notable increase in SCEs by sodium selenite as well as zinc chloride was also observed. However, the frequency of SCEs by cadmium chloride was inhibited by the simultaneous addition of sodium selenite and zinc chloride 1.2 $\mu$M, respectively. The mitotic index significantly decreased in higher concentration of cadmium chloride but not was significantly different in any concentration of cadmium chloride with the simultaneous addition of sodium selenite or zinc chloride. The results showed that the decreased additive SCE effect was observed when induced by the combined treatment which could suggest that sodium selenite and zinc chloride have a protective effect on cadmium chloride.

• Journal of Radiation Protection and Research
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• 제17권1호
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• pp.11-19
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• 1992

카드뮴 독성의 반응을 파악하고 효과적인 치료방법을 제시하고자 백서에 $CdCl_2$ 용액을 경구투여하여 혈중 $K^+,\;Ca^{2+}$ 농도, glutamate oxaloacetate transaminase(GOT), glutamate pyruvate transaminase(GPT) 활성 및 c-AMP 농도를 경시적으로 측정하였다. 카드뮴 용액을 단독투여하면 혈중 $K^+$ 농도에 비해 $Ca^{2+}$ 농도의 감소가 유의하였으며, GOT와 GPT 및 c-AMP의 농도는 증가하였다. 카드뮴을 함유한 selenium 병용투여군과 metallothionein 병용투여군에서는 카드뮴 단독투여군에 비하여 혈중 $Ca^{2+}$ 농도에 유의한 변화가 없었다. 그러나 카드뮴의 체내 오염시 관찰할 수 있는 독성지표로 혈중 GOT 및 GPT활성과 c-AMP 농도의 상승이 selenium에 의하여 현저하게 감소하나 metallothionein에 의하여는 감소효과가 없었으므로, 카드뮴 투여로 증가한 이들 해독지표에 대한 보상효과는 selenium에서 현저함을 알 수 있었다.

• Bulletin of the Korean Chemical Society
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• 제32권7호
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• pp.2316-2318
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• 2011

A novel technology has been developed for the synthesis of thioglycolic acid (TGA)-capped CdSe quantum dots (QDs) in aqueous medium. The reaction was carried out in air atmosphere with one-pot by using $SeO_2$ to replace Se or $Na_2Se$. The technological parameters including refluxing time, pH values and molar ratios of selenium to cadmium had significant influence on the luminescence properties of CdSe QDs. Furthermore, the obtained QDs were characterized by fluorescent spectroscopy, X-ray powder diffraction (XRD) and transmission electron microscopy (TEM), respectively. The results demonstrated that the CdSe QDs were of zinc-blended crystal structure in a sphere-like shape.

• 한국환경농학회지
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• 제22권2호
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• pp.94-99
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• 2003

본 연구의 목적은 랫드 간세포 일차배양에서 카드뮴에 의해 유발된 세포독성 및 지질과산화에 대한 셀레늄의 항산화 및 간보호 효과를 조사하기 위함이다. 이를 위해 2개의 실험을 수행하였다. 실험 1에서는, 1, 10, 50, 100 및 $50\;{\mu}M$의 다양한 농도의 카드뮴으로 6시간 동안 간세포를 일차 배양하였다. 간세포 생존율과 지질과산화는 각각 MTT 방법과 TBARS 방법으로 측정하였다. 항산화 효과와 간보호 효과는 각각 GOT와 GSH-Px 활성을 측정함으로써 결정하였다. 카드뮴은 농도 의존적으로 세포 생존율을 감소시켰으며 지질과산화는 증가시켰다. 세포 생존율과 지질과산화 간에 유의적인 음의 상관관계(r=-0.943, p<0.01)가 관찰되었다. 카드뮴은 $50\;{\mu}M$ 농도에서 GOT의 활성을 증가시켰으나 GSH-Px의 활성은 감소시켰다. 실험 2에서는 셀레늄이 카드뮴에 의해 유발된 독성 및 지질과산화에 대한 효과를 연구하기 위해 $100\;{\mu}M$의 카드뮴과 0.01, 0.1 및 1 ppm의 다양한 농도의 셀레늄으로 6시간 동안 간세포 일차 배양하였다. 세포 생존율과 GSH-Px의 활성은 1 ppm의 셀레늄에 의해 증가되었다. 반면에, 지질과산화와 GOT의 활성은 0.1 ppm의 셀레늄에 의해 감소되었다. 이러한 연구 결과는 셀레늄이 카드뮴에 대한 항산화 및 보호 효과를 나타내 보이고 있다.

• Journal of Nutrition and Health
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• 제30권9호
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• pp.1050-1054
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• 1997

In order to study the effects of green juice of Angelica keiskei Koidz on the toxicity of several selected elements, experiments were conducted with mice for a period of six weeks. The results obtained from the experiment are summarized as follows ; 1) Mice fed with 50 ppm of cadmium showed no adverse effects on the growth rate and mortality , but cadmium accumulation into the internal organs. 2) mice fed with 500ppm of lead showed no reduced effect on the growth rate and mortality, but lead accumulation was increased in the internal organs. The administration of green juice slightly reduced lead accumulation in the internal organs. 3) Mice fed with 50 ppm of selenium also showed no serious adverse effect of the growth rate and mortality , but selenium accumulation occurred in the internal organs. The administration of green juice slightly reduced selenium accumulation in the internal organs, but the modes and degrees of reduction in selenium accumulation were not consistent with the internal organs, liver, kidney and pancreas. 4) Mice fed with 500 ppm of chromium showed, numerically , an adverse effect on the growth rate, but showed no statistically significant difference. The administration of green juice rather increased the accumulation of chromium instead of reduction of chromium accumulation in the internal organs.