• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1995년도 춘계학술대회
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• pp.121-121
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• 1995

This study was conducted to examine novel Pt(II) complexes, (KHPC-002: [Pt(trans-1-dach) (DPPE)]. 2N0$_3$, KHPC-005: [Pt(cis-dach) (DPPE)] 2NO$_3$ and KHPC-006: [Pt(cis-dach) (DPPP)]. 2NO$_3$) for their acute toxicities. In male and female mice given a single intraperitoneal administration of KHPC-002, KHPC-005 and KHPC-006, we determined that LD$\_$50/ values of Pt(II) complexes were 295.5mg/kg(M), 350.4mg/kg(F) : KHPC-002, 596.5mg/kg(M), 674,8mg/kg(F): KHPC-005, 158.7mg/kg(M), 157.7mg/kg(F); KHPC-006, respectively. The signs of toxicity in mice observed fellowing the administration of these compounds included the followings: decreased mortor activity: abnormal gait: salviation, trasient decreased body weight. There were no treatment related specific changes in growth examination.

• 대한한의학방제학회지
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• 제19권1호
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• pp.233-241
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• 2011

Objectives : This study was carried out to investigate the acute toxicity and safety of Ssanghwa-tang extract fermented with Paecilomyces japonica. Methods : To evaluate the acute toxity and safety, 0(control group), 1250, 2500 and 5000 mg/kg of Ssanghwa-tang and fermented Ssanghwa-tang extracts were orally administered to 35 male and 35 female ICR mice. After single administration, we observed number of death, general toxicity, changes of body weight, and autopsy. Results : Compared with the control group, we could not find any toxic alteration in all treated groups (1250, 2500 and 5000 mg/kg). Conclusions : $LD_{50}$ of Ssanghwa-tang and fermented Ssanghwa-tang extracts might be over 5000 mg/kg and it is very safe to ICR mice.

• 사상체질의학회지
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• 제21권1호
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• pp.247-253
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• 2009

1. Objectives This study was designed to andyze the acute toxicity and safety of Yeoldahanso-tang 2. Methods We investigated the acute toxicity for water-extracted Yeoldahanso-tang. 25 male and 25 female mice were observed for 14 days after one day oral administration of Yeoldahanso-tang at the respective doses of 0(control group), 2560, 3200, 4000 and 5000 mg/kg. 3. Results We observed survival rates, general toxicity, change of body weight and autopsy. 4. Conclusions The data confirmed that Yeoldahanso-tang is free from the toxicity and safety problems in oral route respectively. Compared with the control group, we could not find any toxic alteration in all treated groups(2560, 3200, 4000 and 5000 mg/kg). In conclusion, LD50 of Yeoldahanso-tang was over 5000 mg/kg and it is very safe to mice.

• 한국한의학연구원논문집
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• 제16권1호
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• pp.135-140
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• 2010

This study was carried out to investigate the acute toxicity and safety of Ssanghwa-tang extract fermented with Ganoderma lucidum. To evaluate the acute toxity and safety, 0(control group), 1250, 2500 and 5000 mg/kg of Ssanghwa-tang and fermented Ssanghwa-tang extracts were orally administered to 20 male and 20 female ICR mice. After single administration, we observed survival rates, general toxicity, changes of body weight, and autopsy. Compared with the control group, we could not find any toxic alteration in all treated groups (1250, 2500 and 5000 mg/kg). $LD_{50}$ of Ssanghwa-tang and fermented Ssanghwa-tang extracts might be over 5000 mg/kg and it is very safe to ICR mice.

• 한국발생생물학회지:발생과생식
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• 제8권2호
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• pp.69-75
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• 2004

1930년대 이후부터 소위 여성호르몬이라 지칭되는 에스트로겐이 남성 생식에 유해함이 잘 알려져 왔다. 그러나 에스트로겐 수용체를 녹아웃한 형질전환생쥐(estrogen receptor knockout, ERKO)를 사용한 연구들에 의해 에스트로겐이 남성 생식에서 주용한 역할을 담당함이 밝혀졌다. 본 논문의 목적은 정자를 포함한 설치류 수컷 생식기관에서 에스트로겐 수용체의 분포, 발현 및 기능에 대한 근간의 연구들을 요약하고, 아울러 녹아웃 생쥐 모델과 그 표현형에 대한 정보를 제공함에 있다.

• 동의생리병리학회지
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• 제26권1호
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• pp.47-52
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• 2012

The aim of this study was to investigate the acute toxicity and safety of fermented Soshiho-tang extract using male and female ICR mice. Mice were treated with fermented Soshiho-tang extract once orally at 1250, 2500 or 5000 mg/kg and observed for two weeks. At the doses used, no mortality or abnormal clinical signs in animals were shown during at the observation period. In addition, no differences were found between control and treated groups in body weight, hematology and biochemical analysis, and other findings. Above data strongly suggest that no observed adverse effect level of fermented Soshiho-tang extract might be over 5000 mg/kg/day in this study.

• 한국동물생명공학회지
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• 제36권4호
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• pp.247-252
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• 2021

Embryo transfer (ET) in the animal is an important procedure to generate genetically engineered animals and conserve genetic resources. For ET experiments in mice, pseudopregnant recipients are usually prepared with proestrus stage of females and vasectomized males. However, this conventional method is inefficient because the size of female colonies should be large to select only the proestrus stage in the estrous cycle and the surgical procedures are required to generate vasectomized males. In this study, we established a simple and efficient protocol to prepare ET recipients using the estrous synchronization with hormone injection and the mating with wild male mice. The delivery rate of ET recipients tended to be increased with estrous synchronization using hormone injection (100%) compared to the conventional method (71%). Further, natural pregnancy of the recipients, induced by mating with a wild male, significantly enhanced the birth rate of ET offspring than the conventional method (33% vs. 13%). Based on the results, we concluded that our new protocol using hormone injection to ET recipients and mating with wild males could be more efficient and simpler compared to the conventional method.

• 한국발생생물학회지:발생과생식
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• 제26권4호
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• pp.145-153
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• 2022

The gut microbiota is involved in the maintenance of physiological homeostasis and is now recognized as a regulator of many diseases. Although germ-free mouse models are the standard for microbiome studies, mice with antibiotic-induced sterile intestines are often chosen as a fast and inexpensive alternative. Pathophysiological changes in the gut microbiome have been demonstrated, but there are no reports so far on how such alterations affect the bacterial composition of the uterus. Here we examined changes in uterine microbiota as a result of gut microbiome disruption in an antibiotics-based sterile-uterus mouse model. Sterility was induced in 6-week-old female mice by administration of a combination of antibiotics, and amplicons of a bacteria marker gene (16S rRNA) were sequenced to decipher bacterial community structures in the uterus. At the phylum-level, Proteobacteria, Firmicutes, and Actinobacteria were found to be dominant, while Ralstonia, Escherichia, and Prauserella were the major genera. Quantitative comparisons of the microbial contents of an antibiotic-fed and a control group revealed that the treatment resulted in the reduction of bacterial population density. Although there was no significant difference in bacterial community structures between the two animal groups, β-diversity analysis showed a converged profile of uterus microbiotain the germ-free model. These findings suggest that the induction of sterility does not result in changes in the levels of specific taxa but in a reduction of individual variations in the mouse uterus microbiota, accompanied by a decrease in overall bacterial population density.

• 대한한방부인과학회지
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• 제22권4호
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• pp.19-27
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• 2009

Purpose: This study was carried out to investigate the acute toxicity and safety of fermented Ojeok-san(Wuji-san) extract. Methods: To evaluate the acute toxity and safety, 0(control group), 1250, 2500 and 5000 mg/kg of fermented Ojeok-san(Wuji-san) extract were orally administered to 20 male and 20 female ICR mice. After single administration, we observed survival rates, general toxicity, changes of body weight, and autopsy. Results: Compared with the control group, we could not find any toxic alteration in all treated groups (1250, 2500 and 5000 mg/kg). Conclusions: $LD_{50}$ of fermented Ojeok-san(Wuji-san) extract might be over 5000 mg/kg and it is very safe to ICR mice.

• 대한한방부인과학회지
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• 제22권3호
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• pp.135-142
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• 2009

Purpose: Ojeok-san(Wuji-san) is one of the most frequently prescribed traditional medicine. To evaluate acute toxicity, ICR mice were treated with Ojeok-san(Wuji-san) administration. Methods: In this study, we investigated the acute toxicity of water-extracted Ojeok-san(Wuji-san). 0(control group), 1250, 2500, and 5000 mg/kg of Ojeok-san(Wuji-san) were orally administered to 20 male and 20 female for 14 days. We observed survival rates, general toxicity, change of body weight, and autopsy. Results: Compared with the control group, we could not find any toxic alteration in all treated groups (1250, 2500 and 5000 mg/kg). Conclusions: $LD_{50}$ of Ojeok-san(Wuji-san) might be over 5000 mg/kg and it is very safe to ICR mice.