• 한국발생생물학회지:발생과생식
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• 제7권1호
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• pp.15-22
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• 2003

Fas는 세포자연사를 유도하는 세포 표면 수용체 단백질로서 면역계에서 중요한 역할을 한다. 이러한 Fas mRNA는 림프조직뿐만 아니 라 비 림프조직에서도 발현한다. 한편 대다수의 난포들은 세포자연사와 연관된 기 작을 통해 난포폐쇄로 진행되는 것으로 알려지고 있으나, 난포폐쇄에 관한 기작은 아직 규명되지 않았다. 따라서 본 연구의 목적은 먼저 생쥐의 난소의 과립세포와 난자에서 Fas와 Fas ligand의 발현 여부를 알아보고, Fas와 Fas ligand발현과 난포폐쇄와의 상관 관계를 알아보고자 하였다. RT-PCR을 수행한 결과, 난소내 과립세포와 난자에서 Fas와 Fas ligand mRNA가 모두 발현하는 것을 확인할 수 있었다. 면역조직화학적 염색 결과 또한, 원시 난포를 제외한 모든 발달 중인 난포의 과립세포와 난자들에서 Fas와 Fas ligand가 검출되는 것을 확인하였고, 특히 폐쇄를 보이는 난포에서 강한 발현을 보였다. 한편, 난소에서 세포자연사를 확인하기 위해 TUNEL 염색을 수행한 결과, TUNEL 양성을 보이는 과립세포와 난자의 수는 건강한 정상 난포에 비해 폐쇄난포에서 증가하는 것을 관찰할 수 있었다. 이상의 결과들은 난소내 과립세포와 난자에서 Fas와 Fas ligand 발현과 난포폐쇄와 상관 관계가 있음을 보여주고 있으며, 이러한 Fas와 Fas ligand가 생쥐 난소내 난포폐쇄 유발에 관여하고 있을 것으로 사료된다

• 대한한방내과학회지
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• 제21권3호
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• pp.425-432
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• 2000

Objective : It is well known that Gagamsojeokbackchool-san show antitumor effects and its activities are result from enhancement of immune function, we investigated the antitumor effects of Sambonggangyongbaneo-tang and its mechanism. Methods : We measured change of body weight, weight of immune organs (Spleen, Thymus), Liver, Kidney, tumor weight, cytotoxicity for investigation of antitumor effects of Sambonggangyongbaneo-tang. Results : 1. The body weight of mouse has no significant difference between control and sample groups. 2. The weights of immune organs (Spleen and Thymus) decreased significantly in sample groups. The weights of Liver and Kidney have no significant difference. 3. The tumor weights in mouse decreased significantly in sample groups and showed dose-dependent effect. 4. Cell viability of Sarcoma 180 has no significant difference in sample groups. 5. HeLa cell viability has no significant difference in low concentration, but it decreased significantly in high concentration. Conclusions : According to the above results, it could be suggested that Sambonggangyongbaneo-tang has prominant antitumor effects and cytotoxicity.

• 한국발생생물학회지:발생과생식
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• 제24권1호
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• pp.43-52
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• 2020

NUCB2/nesfatin-1 known to regulate appetite and energy homeostasis is expressed not only in the hypothalamus, but also in various organs and tissues. Our previous reports also demonstrated that NUCB2/nesfatin-1 was expressed in the reproductive organs, including the ovaries, uterus, and testes of mice. However, it is yet known whether NUCB2/nesfatin-1 is expressed in the oviduct and how its expression is regulated. Therefore, we investigated the expression of NUCB2/nesfatin-1 in the oviduct and its expression is regulated by gonadotropin. Immunohistochemical staining results showed that nesfatin-1 protein was localized in epithelial cells of the oviduct. As a result of quantitative real-time PCR (qRT-PCR) and Western blot, NUCB2/nesfatin-1 was detected strongly in the oviducts. During the estrus cycle, NUCB2/nesfatin-1 expression in the oviducts was markedly higher in the proestrus stage than in other estrus stages. In order to elucidate whether the expression of NUCB2 mRNA is controlled by the gonadotropins, we injected PMSG and hCG and measured NUCB2 mRNA level in the oviduct after injection. Its level was increased in the oviduct after PMSG injection, but no significant change after hCG injection. In addition, NUCB2 mRNA levels were markedly reduced after ovariectomy, while recovered after 17β-estradiol (E2) injection, but not by progesterone (P4). This study demonstrated that NUCB2/nesfatin-1 is highly expressed in the oviduct of mouse and its expression is regulated by E2 secreted by the ovaries. These results suggest that NUCB2/nesfatin-1 expressed by the oviduct may affect the function of the oviduct regulated by the ovaries.

• 한국환경보건학회지
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• 제12권1호
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• pp.47-54
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• 1986

The purpose of the study is to determine the effects of sodium alginate on the suppression of organ accumulation of heavy metals were tested by mice. The seventy mice were divided into the control group and the experimental groups. The mice of cadmium group were subdivided into three groups by dose of 10 ppm cadmium group, adding 1% sodium alginate to the diets contaminated with 10 ppm cadmium group and adding 10% sodium alginate to the diets contaminated with 10 ppm cadmium group. The mice of copper group were subdivided into three groups by dose of 10 ppm copper group, adding 1% sodium alginate to the diets contaminated with 10 ppm copper group, and adding 10% sodium alginate to the diets contaminated with 10 ppm copper group. After the series of feeding of twenty-one days, the mice were killed and examined. Organs and feces were removed and analyzed for cadmium and copper amounts. The results obtained were as follows 1. As for average body weight gains, those of control group mice were the highest than heavy metal group and those of adding 10% sodium alginate to the diets contaminated with 10 ppm copper group the lowest. 2. The amount of cadmium accumulated in liver and kidney was higher than blood. The amount of cadmium in organs was higher in cadmium group than adding sodium alginate to the diets contaminated with cadmium group. 3. The amount of copper in liver was the highest, and that of copper in blood was the lowest. 4. The excretion of heavy metals was promotioned by adding 10% sodium alginate to the diets contaminated with 10 ppm heavy metal. ( P < 0.05 ).

• Toxicological Research
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• 제28권1호
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• pp.11-18
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• 2012

The aim of this study was to evaluate the single oral dose toxicity of Bupleuri Radix (BR) aqueous extracts, it has been traditionally used as anti-inflammatory agent, in male and female mice. BR extracts (yield = 16.52%) was administered to female and male ICR mice as an oral dose of 2,000, 1,000 and 500 mg/kg (body weight) according to the recommendation of Korea Food and Drug Administration (KFDA) Guidelines. Animals were monitored for the mortality and changes in body weight, clinical signs and gross observation during 14 days after dosing, upon necropsy; organ weight and histopathology of 14 principal organs were examined. As the results, no BR extracts treatment related mortalities, clinical signs, changes on the body and organ weights, gross and histopathological observations against 14 principal organs were detected up to 2,000 mg/kg in both female and male mice, except for soft feces and related body weight decrease detected in male mice treated with 2,000 mg/kg. Therefore, $LD_{50}$ (50% lethal dose) and approximate LD of BR aqueous extracts after single oral treatment in female and male mice were considered over 2000 mg/kg, respectively. Although it was also observed that the possibilities of digestive disorders, like soft feces when administered over 2,000 mg/kg of BR extracts in the present study, these possibilities of digestive disorders can be disregard in clinical use because they are transient in the highest dosages male only.

• 대한한방내과학회지
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• 제34권1호
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• pp.46-58
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• 2013

Objectives : The object of this study was to obtain acute information (single oral dose toxicity) of Scutellariae Radix Aqueous Extracts (SR; yield = 27.20%) which traditionally have been used in Korean medicine for treating various diseases including inflammatory diseases. Methods : In order to observe the 50% lethal dose ($LD_{50}$), approximate lethal dosage (ALD) and target organs, SR Aqueous Extracts were once orally administered to female and male ICR mice at dose levels of 2,000, 1,000, 500 and 0 (control) mg/kg (body weight.) according to the recommendation of KFDA Guidelines. The mortality and changes on body weight, clinical signs and gross observation were monitored during 14 days after single oral treatment of SR according to KFDA Guidelines with organ weights and histopathological observations of 14 types of principle organs. Results : After single oral treatment of SR, we could not find any mortality and toxicological evidences up to 2,000 mg/kg treated group, the limited dosages in rodents, on the body and organ weights, clinical signs, gross and histopathological observations, except for some accidental findings. Conclusions : The results obtained in this study suggest that the $LD_{50}$ and ALD of SR in both female and male mice after single oral treatment be considered as over 2,000 mg/kg because no mortalities were detected up to 2,000 mg/kg that was the highest dose recommended by KFDA and OECD, and can be safely used in clinics.

• Clinical and Experimental Reproductive Medicine
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• 제31권4호
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• pp.201-207
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• 2004

Objective: The Id family of helix-loop-helix proteins are thought to affect the balance between cell growth and differentiation by negatively regulating the function of basic-helix-loop-helix (bHLH) transcriptional factors. The aim of this study was to investigate the expression pattern of Ids (Id-1, -2, -3, and -4) in preimplantation mouse embryos at mRNA and protein levels. Methods: Oocytes and preimplantation embryos were collected from reproductive organs of female ICR mice following superovulation. RT-PCR was performed to investigate the mRNA expression patterns of Id genes and their protein were localized by immunofluorescence analysis. Results: Id-1 and Id-3 mRNAs were strongly expressed at the germinal vesicle (GV) oocyte and the blastocyst stages. Id-2 mRNA was expressed throughout preimplantation embryo development, but Id-4 was not expressed. Immunofluorescence showed that Id-1 and Id-2 were predominantly localized in cytoplasmic region, but the immunofluorescence signal of Id-3 was weak throughout preimplantation embryo development. Conclusion: These data show for the first time that Ids are expressed in preimplantation mouse embryos and suggest that Ids may play an important role in early preimplantation embryo development and uterine physiological changes.

• 사상체질의학회지
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• 제19권1호
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• pp.171-185
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• 2007

1. Objectvies This experimental study was designed to investigate the effect of cheongpesagan-tang extract on the obstruction of the lipase activity and weight, plasma, UCP1, 2 mRNA in db/db mouse. Material and Methods: The body weight loss, food intake, feeding efficiency ratio, weight of the internal organs (liver, kidney, epididymal fat, brown adipose tissue), plasma glucose, triglyceride, total cholesterol, white adipose tissue, adipocyte size distribution, expression of UCP1, 2 mRNA were measured in db/db mouse administered Cheongpesagan-tang extract for 6 weeks. These were then compared with those of control groups administered the diet. 2. Results 1) Inhibitory effect against lipase activity was Kilgyung(81.7%), Nabokja (73.1%), Seungma(73.0%), Daewhang (68.4%), Kalgeun (55.3%), Kobon(34.5%), Hwanggeum(4.2%). 2) In the sample group, the body weight was significantly decrease than that of control group. 3) In the sample group, the weight of epididymal fat showed significantly decrease than that of control group. 4) In the sample group, triglyceride showed significantly decrease than that of control group. 5) In the sample group, distribution of adipose tissue showed significantly larger than that of control group. 6) In the sample group, UCP1, 2 mRNA in BAT showed significantly increase than that of control group. 3. Conclusions These results show that cheongpesagan-tang has an effect on the treatment of obesity.

• BMB Reports
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• 제29권6호
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• pp.555-563
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• 1996

A membrane-bound phosphatidylinositol 4-kinase (PI 4-kinase) was separated in a sucrose gradient and solubilized with 1% Triton X-100 from mouse brain. The enzyme was purified 2,952-fold by various chromatographic techniques including DEAE-cellulose, PI-Sepharose and Sephacryl S-200 gel filtration. The molecular weight of PI 4-kinase was approximately 76 kDa by gel filtration and 70.8 kDa by SDS-polyacrylamide gel electrophoresis. The purified enzyme exhibited specific activity of 11.2 nmol/min/mg protein and pi value of 4.7. Kinetic analysis of the PI 4-kinase indicated apparent $K_m$, values of 190 ${\mu}M$ and 120 ${\mu}M$ for phosphatidylinositol and ATP, respectively. The maximal activity of this purified enzyme was observed at pH 7.4 at an incubation temperature of $37^{\circ}C$. The enzyme activity was significantly activated by $Mg^{2+}$, $Mn^{2+}$ and $Fe^{2+}$, and inhibited severely by $Ca^{2+}$. PI 4-kinase was proved to be pure in its immunoblot test by polyclonal antibody prepared from immunized rabbit sera. By this test, we were able to detect the existence of the same type of PI 4-kinase from other mouse organ tissues, such as liver, heart, kidney and spleen. Furthermore, similar immunoblot analysis with the same antisera recognized the different epitopes of PI 4-kinase proteins from various organs of rabbit, chinese hamster and rat.

• 한국환경보건학회지
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• 제48권2호
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• pp.106-115
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• 2022

Background: Current research suggests that humans are exposed to microplastics through consumption of foods and beverages, the airway route, and a variety of other means. Objectives: We evaluated oxidative stress and inflammation from polyethylene microplastics (PE-MPs) in the neonatal liver through intragastric administration or intratracheal instillation in pregnant mice. Methods: PE-MPs were administered from gestational day 9 to postnatal day 7. The intragastric administration group (0.01 mg/mouse/day or 0.1 mg/mouse/day) and intratracheal instillation group (6 ㎍/mouse/day or 60 ㎍/mouse/day) of PE-MPs were administered. After sacrifice, the oxidative stress and inflammation of the neonatal livers were measured. Results: As a result of the oxidative stress caused by PE-MPs in the neonatal livers, glutathione peroxidase decreased in a concentration-dependent manner in the intragastric administration group compared to the control group and intratracheal instillation decreased in high concentration PE-MPs. The catalase level increased at high concentrations of intragastric administration and intratracheal instillation. To confirm the level of inflammation caused by PE-MPs, monocyte chemoattractant protein-1 and tumor necrosis factoralpha were increased compared to the control group except for intratracheal intilation-high concentration PEMPs. The C-reactive protein level was decreased by intragastric administration compared to the control group and intratracheal instillation was increased compared to the control group. Conclusions: Despite the difficulty in comparing the toxic intensity between intragastric administration and intratracheal instillation of PE-MPs, our study revealed that oxidative stress and inflammation were induced in the neonatal liver. However, it is necessary to evaluate the toxic effects of microplastics on various organs as well. Overall, the present study indicates that the evaluation of toxic effects of long-term microplastic exposure, potential of microplastic toxicity on next-generation offspring and toxicity mechanism in human should be considered for further investigations.