• Asian Pacific Journal of Cancer Prevention
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• 제14권3호
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• pp.1833-1840
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• 2013

Metastasis is one of the hallmarks of malignant neoplasms and is the leading cause of death in many cancer patients. A major challenge in cancer treatment is to find better ways to specifically target tumor metastasis. In this study, the anti-metastatic potential of the methanolic extract of Rhizophora apiculata (R.apiculata) was evaluated using the B16F-10 melanoma induced lung metastasis model in C57BL/6 mice. Metastasis was induced in C57BL/6 mice by injecting highly metastatic B16F-10 melanoma cells through the lateral tail vein. Simultaneous treatment with R.apiculata extract (10 mg/kg b.wt (intraperitoneal) significantly (p<0.01) inhibited pulmonary tumor nodule formation (41.1 %) and also increased the life span (survival rate) 107.3 % of metastatic tumor bearing animals. The administration of R.apiculata extract significantly (p<0.01) reduced biochemical parameters such as lung collagen hydroxyproline, hexosamine, uronic acid content, serum nitric oxide (NO), ${\gamma}$-glutamyl transpeptidase (GGT) and sialic acid levels when compared to metastasis controls. These results correlated with lung histopathology analysis of R.apiculata extract treated mice showing reduction in lung metastasis and tumor masses. Taken together, our findings support that R.apiculata extract could be used as a potential anti-metastasis agent against lung cancer.

• Food Science and Biotechnology
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• 제16권6호
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• pp.894-901
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• 2007

This study investigated the effects of cell cultured Acanthopanax senticosus extract (ASE) supplementation and swimming exercise on lipid profiles and carnitine concentrations in C57BL/6J mice fed high fat diets. Male C57BL/6J mice (n=50), aged 4 weeks, were divided into 5 groups based on exercise and/or ASE supplementation (0.5 g/kg of body weight): normal diet (N-C), high fat diet (H-C), high fat diet non-supplement & exercise (H-NSE), high fat diet supplement & no exercise (H-SNE), high fat diet supplement & exercis (H-SE). Liver nonesterified carnitine (NEC) was significantly higher in the H-SNE group than in the H-C group, and liver total carnitine (TCNE) levels were significantly higher in the H-SNE group than in the H-NSE and H-SE groups. Liver and muscle carnitine palmitoyltransferase-I (CPT-I) mRNA levels tended to be higher with ASE supplementation and/or exercise. These results suggest that supplementation with ASE and/or exercise might have a role in improving lipid oxidation.

• Archives of Pharmacal Research
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• 제21권6호
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• pp.769-773
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• 1998

Brazilin was examined for its effects on the induction of immunological tolerance. Brazilin was administered to C57BL/6 female mice for 2 consecutive days before the immunization with high dose SRBC (109 cells) which can produce immunological tolerance. Delayed type hypersensitivity, IgM plaque forming cells, ConA induced IL-2 production and mitogen- or antigen-induced proliferation of lymphocytes were measured as evaluation parameters. Administration of brazilin prior to immunization could keep the DTH and IL-2 production almost optimaly immunized levels. Brazilin also inhibited the elevation of non-specific suppressor cell activity. ConA induced proliferation of splenocytes in high dose SRBC immunized mice was significantly decreased by pretreatment of brazilin. And this might be one of the reason for augmentation of DTH by brazilin. However, IgM plaque forming cells were not affected by the treatment of brazilin. These results indicate that brazilin prevents the induction of mmunological tolerance caused by high dose SRBC by suppressing the elevation of suppressor cell activity and by inhibiting the decrease in IL-2 production in C57BL/6 female mice.

• 동의생리병리학회지
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• 제22권2호
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• pp.357-364
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• 2008

Mylabris is the dried body of the chinese blister beetle. The species used in medicine are Mylabris phalerata and M. cichorii. In recent studies, it has been found that Mylabris possesses antitumor properties, increases the number of leukocytes, and has irritant effects on the urinary organs. The crude extracts of Mylabris have been noted for their highly irritant action and other traditional uses of Mylabris include treatment of poor local blood circulation. The active constituent of Mylabris is cantharidin. The chemical is notable for its vesicant properties, but with severe side effects such as nephrotoxicity. This experiment examined the effect of extracts and fractions, obtained from Mylabris phalerata Pall. on hair growth activity of the C57BL/6N mice after topical application to skin. First, we examined the effect of an extracts, obtained from the alcohol extracts of dried Mylabris phalerata Pall. on hair growth activity of the C57BL/6N mice after topical application to skin. Second, we examined on hair growth activity of the cantharidin fraction of Mylabris phalerata Pall. compared to the control and 1% minoxidil groups. Third, we investigated the number of hair follicle and mast cells after topical application of extracts of Mylabris phalerata Pall. to skin for 16 days. The results were as follows: Hair growth effect from the extracts of Mylabris phalerata Pall.(0.312%) was observed in 80% of mice whose hair had been removed in 13 days. Hair growth effect from the extract of Mylabris phalerata Pall.(0.312 and 0.625%) and 1% minoxidil group was observed in 100% of mice whose hair had been clipped in 20 days. Hair growth effect from the cantharidin fraction(0.5%) and water fraction(0.5%) of Mylabris phalerata Pall. was observed in 100% of mice whose hair had been clipped in 24 days. The hair growth effect on the cantharidin fraction(0.125%) was observed to be strong compared with the minoxidil(3%) group, commercial hair growth agents, in mice whose hair had been clipped in 19 days. In the spontaneous alopecia mice model, the hair growth effect from the cantharidin fraction (0.125%) was observed to be strong as compared with the states before the 13 days experiment. These experiments suggest that extracts and fractions of Mylabris phalerata Pall. may stimulate the topical hair growth activity in low doses.

• Journal of Acupuncture Research
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• 제23권2호
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• pp.1-19
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• 2006

Objectives : The aim of this study was to investigate the hypoglycemic and hypolipidemic activities and mechanisms of Acanthopanax senticosus (AS) herbal acupuncture. Methods : Anti-diabetic and anti-steatotic activity of the AS herbal acupuncture was investigated on C57BL/6J ob/ob mice. After random grouping at the age of 9 weeks, the herbal acupuncture groups were injected subcutaneously at the left and right Gansu (BL18) corresponding acupuncture points alternately on exactly the same time every day with 0.1ml of either 400 mg/kg or 800 mg/kg of AS (AS400 and AS800) for 8-week period. As a positive control, metformin was administrated at a dose of 300 mg/kg (MT300). Body weights were measured weekly, and on every other week blood was collected for blood glucose analysis. At the end of study, blood was also collected for determination of plasma insulin and lipid levels, after which they were killed and periepidydimal fat, liver, muscle, and pancreas were immediately removed. The removed tissues were instantly soaked in liquid nitrogen and stored at $-70^{\circ}C$ for morphological examination and mRNA analysis. Results : The AS herbal acupuncture significantly prevented weight gain on C57BL/6J ob/ob mice. The AS herbal acupuncture lowered blood glucose and improved glucose tolerance in C57BL/6J ob/ob mice. The increase of insulin response during the OGTT was inhibited by the AS herbal acupuncture. Insulin sensitivity of skeletal tissue was enhanced. Plasma lipid levels were significantly improved in the AS herbal acupuncture groups. The AS herbal acupuncture decreased hepatic lipogenesis and hepatic triglyceride production, and increased fatty acid (FA) transporter that involves in FA uptake. The AS herbal acupuncture inhibited the increase of liver mass by prevention of the accumulation of TG but did not inhibit weight gain of fat tissue on C57BL/6J ob/ob mice. Conclusion : In summary, we have demonstrated several unique properties of the AS herbal acupuncture in decreasing body weight, and reversing insulin resistance and hepatic steatosis in ob/ob mice. This AS herbal acupuncture acts as an insulin sensitizer and specifically decreases circulating glucose and lipids, and suppresses hepatic lipogenesis.

• 생명과학회지
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• 제32권7호
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• pp.532-541
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• 2022

고지방식이(High fat diet, HFD)에 의해 유발되는 비만은 정상적인 마우스에서는 연구되지 않았지만 여러 유전자변형마우스의 전립선암(Prostate cancer)에 대한 강력한 위험인자 및 예후인자로 검증되었다. HFD-유도 비만이 정상적인 마우스에서 전립선암의 발생 및 진행에 영향을 미칠 수 있는지 여부를 조사하기 위해, 16주 동안 60% HFD 식이를 급여한 비만 C57BL/6N 마우스에서 전립선의 무게 및 조직학적 구조 변화와 암관련 단백질 발현을 분석하였다. 첫째, HFD 식이를 급여한 C57BL/6N 마우스는 체중, 장기의 무게, 지방축적, 혈청지질 수치의 증가 등을 포함한 비만증상을 성공적으로 유도되었다. 전립선의 무게는 No그룹에 비해 HFD-유도 비만마우스에서 유의미하게 증가하였다. 전립선의 4가지 엽들 중 외측전립선(Dorsolateral prostate, DLP)과 정낭(Seminal vesicle, SV)의 무게는 유의적인 변화가 없었지만, 복부전립선(Ventral prostate, VP)과 전방전립선(Anterior prostate, AP)의 무게는 No그룹보다 HFD-유도 비만마우스에서 증가하였다. 또한, 전립선의 조직학적 구조에서 과형성(Hyperplasia) 및 비호지킨림프종(Non-hodgkin's lymphoma, NHL)의 발생률은 HFD-유도 비만마우스에서 유의미하게 증가하였으며, 같은 그룹에서 AP의 상피두께도 증가하였다. HFD-유도 비만마우스에서 AKT (Protein kinase B) 신호경로에서 주요 단백질의 인산화수준이 유의미하게 증가했다. 따라서 이러한 결과는 HFD-유도 비만은 C57BL/6N 마우스에서 전립선암의 발생과 진행을 촉진할 수 있음을 시사한다.

• Preventive Nutrition and Food Science
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• 제10권1호
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• pp.34-39
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• 2005

This study examined the anti-diabetic effect of a silkworm extract in C57BL/6J mice, an ob/㏈ model, fed a high fat diet for 8 weeks. The body weight was not significantly different with the silkworm-extract supplement, nor did food intake and body weight gains also did not differ significantly among the high-fat diet groups. However, the water intake by the silkworm-extract supplemented groups increased significantly compared with that by the distilled-water supplement group, nonetheless, the FER did not differ significantly. For all groups, the blood glucose increased the most after 30 minutes and yet returned to a fasting level within 90 minutes. The fasting time and resulting glucose tolerance for the silkworm-extract supplemented groups were significantly decreased compared to that for the high fat diet with distilled water supplement group, while the level of blood glucose in silkworm-extract supplemented groups was significantly decreased compared with than in the diabetic control group. The HbA1c and insulin levels were no different among the groups. The sucrase and lactase activities in the proximal small intestine were significantly decreased in the silkworm-extract supplement groups compared to that in the diabetic control group. There was no significant difference in the glycogen contents in the liver and muscle among the groups. In conclusion, it was found that the silkworm-extract supplement repressed the disaccharidase activity in the small intestines mucosa of the C57BL/6J mice.

• Toxicological Research
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• 제24권3호
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• pp.183-188
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• 2008

The behavioral phenotypes of out-bred ICR mice were compared with those of in-bred C57BL/6 and BALB/c mice. In particular, this study examined the locomotor activity and two forms of hippocampus-dependent learning paradigms, passive avoidance and object recognition memory. The basal open-field activity of the ICR strain was greater than that of the C57BL/6 and BALB/c strains. In the passive avoidance task, all the mice showed a significant increase in the cross-over latency when tested 24 hours after training. The strength of memory retention in the ICR mice was relatively weak and measurable, as indicated by the shorter cross-over latency than the C57BL/6 and BALB/c mice. In the object recognition memory test, all strains had a significant preference for the novel object during testing. The index for the preference of a novel object was lower for the ICR and BALB/c mice. Nevertheless, the variance and the standard deviation in these strains were comparable. Overall, these results confirm the strain differences on locomotor activity and hippocampus-dependent learning and memory in mice.

• 대한한방내과학회지
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• 제35권2호
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• pp.195-207
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• 2014

Objectives : The purpose of this study was to investigate how Rhei Radix et Rhizoma affects on insulin resistance and adipose tissue inflammatory response in high fat diet induced obese C57BL/6 mice. Methods : Obesity was induced in C57BL/6 mice by high fat diet for 12 weeks. Models were divided into 3 groups (n=6) of normal diet, high fat diet (HFD), and high fat diet with Rhei Radix et Rhizoma and investigated for 12 weeks. We measured body weight, FBS and oral glucose tolerance test (OGTT), serum insulin, homeostatic model assessment-insulin resistance (HOMA-IR), weight of liver and epididymal fat pad. Inflammatory markers such as adipose tissue macrophage (ATM), tumor necrosis factor-${\alpha}$ and interlukin-10 and CD68 of epididymal adipocyte were determined to evaluate the effect of Rhei Radix et Rhizoma on adipose tissue inflammation. Results : Compared with the HFD group, we observed loss of body weight and epididymal fat pad weight, improvement of glucose level and HOMA-IR, reduction of ATM and gene expression of TNF-${\alpha}$, CD68 in the high fat diet with Rhei Radix et Rhizoma group. Conclusions : This study suggests that Rhei Radix et Rhizoma has effects on insulin resistance and adipose tissue inflammatory response in high fat diet induced obese mice.

• 대한의생명과학회지
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• 제13권2호
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• pp.91-97
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• 2007

Obesity is defined as increased mass of adipose tissue, conferring a higher risk of cardiovascular and metabolic disorders such as diabetes, hyperlipidemia, and coronary heart disease. To get a better understanding of the role of a male sex hormone testosterone on obesity, we thus measured the effects of testosterone on white adipose tissue (WAT) mass, adipocyte histology and hepatic lipid accumulation in male castrated (CAST) C57BL/6J mice. Compared to male CAST control mice, testosterone-treated mice had the decreased WAT mass and the increased the number of adipocytes. Especially, histological data showed that the adipocyte size was reduced in a dose-dependent manner and was most effective at dose 150 $\mu$g per mouse for testosterone. In addition, the administration of testosterone resulted in the inhibition of hepatic lipid accumulation compared with control mice. Our results suggest that testosterone regulates adipocytes development and hepatic lipid metabolism, resulting in the prevention of obesity in male CAST mice.