• 한국식품영양과학회지
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• 제17권1호
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• pp.57-61
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• 1988

Effect of Aralia elata extract on experimentally alloxan-induced diabetes ill rabbits and toxicity of mouse were studied; $LD_50$ of Aralia elata extract (A. E. E.) was 5.5g/kg intraperitoneally ill mice. A. E. E. 800mg/kg exhibited more excellent hypoglycemic effect after 6 days and 14 days in 200mg/kg, compared to the control group. Blood urea nitrogen level was significantly decreased after 6 days in 800mg/kg. and blood levels of total cholesterol and GPT activity were showed more significant decreasing effect ill 800mg/kg than 200mg/kg.

• 약학회지
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• 제46권4호
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• pp.242-246
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• 2002

The rhizoma of Polygonatum odoratum (Liliaceae) promotes the production of body fluid and relives dryness symptoms and has hypoglycemic effect. In order to evaluate the prevention of lipid peroxidative efficacy of P. odoratum, its extracts (Et$_2$O and MeOH ex.) and its fractions ($H_2O$, 20％ MeOH, 40％ MeOH, 60％ MeOH and 100％ MeOH fr.) were measured by TBARS assay on rat liver S9 and human erythrocyte ghost membrane. The order of anti-lipid peroxidative effect was as follows: Et$_2$O ex. ＞40％ MeOH fr. ＞60％ MeOH fr.＞100％ MeOH fr. Based on these results, we conclude that membrane lipid peroxidation is inhibited in vitro by addition of P. odoratum ether extract and its gradient MeOH fractions excepts $H_2O$ fr., and which have significant hepatoprotective activity in $CCl_4$-treated rats.

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.386.2-386.2
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• 2002

We investigated the effect of tectorigenin (1) with hypoglycemic and hypolipidemic effects on Phase I and II enzymes and TF activity to elucidate the action of an immunosuppressive compound (1) in the diabetic rat. Compound 1 was obtained from the hydrolysis of tectoridin easily isolated from the flower of Pueraria thunbergiana(Leguminosae). Puerariae Flos has been used as therapeutics for diabetes mellitus in traditional medicine of Korea. (omitted)

• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
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• pp.120.3-121
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• 2003

Lycii Radicis Cortex, the root bark of Lycium chinense Miller (Solanaceae) is used in oriental medicine as a tonic and is reported to exhibit hypotensive, hypoglycemic, and antipyretic activity. Recently, we have isolated dihydro-N-caffeoyltyramine, a phenolic amide, from the Lycii Radicis Cortex. Treatment with dihydro-N-caffeoyltyramine significantly inhibited the proliferation of human leukemia cell lines HL-60 in a dose-dependent manner. We found also that the growth inhibition of HL-60 by dihydro-N-caffeoyltyramine is associated with induction of apoptosis of cells. (omitted)

• Biomolecules & Therapeutics
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• 제12권4호
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• pp.250-256
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• 2004

Cordyceps possesses numerous health-promoting ingredients including hypoglycemic agents. The mechanism for the reduction of circulatory sugar content, however, is still not fully understand. In this study, 4-beta acetoxyscirpendiol (ASD) was purified from the methanolic extracts from fruiting bodies of Paecilomyces tenuipes. Na+/Glucose transporter-1 (SGLT-1) was expressed in the Xenopus oocytes. The effect of ASD on the oocyte expressed SGLT-1 was analyzed utilizing the voltage clamp and 2-deoxy-D-glucose (2-DOG) uptake studies. ASD was shown to significantly inhibit SGLT-1 activity compared to the non-treated control in a dose- dependent manner. In the presense of its two derivatives (diacetoxyscirpenol or 15-acetoxyscirpendiol), SGLT-1 activity was greatly inhibited similarly as ASD. Between ASD derivatives, 15-acetoxyscirepenol showed inhibition equivalent to that of ASD while diacetoxyscirpenol did less degree of inhibition. Insummary , these results strongly indicate that ASD in P. tenuipes may serve as a functional substance in lowering blood sugar in the circulatory system. ASD and its derivatives can be utilized as inhibitors of SGLT-1.

• 한국식품영양과학회지
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• 제16권1호
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• pp.22-28
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• 1987

These studies were conducted to investigate the effects of Leonurus sibiricus extract (L.S.E.) on experimentally $CCl_4-induced$ liver damage and alloxan-induced diabetes in rabbits; Leonurus sibiricus juice (L.S.J.) showed the most rapid recuperation of liver function among samples compared to the control group in $CCl_4-intoxicated$ rabbits. SGPT activity stowed an apparant decreasing effect in 4 days, and the blood level of total cholesterol and total bilirubin in 6 days, and not in alkaline phosphatase level. L.S.J. exhibited more excellent hypoglycemic effect in alloxan-induced diabetes of rabbits, that is, significant to the control group after 2 days and adjacent to the normal level on 8th day. And SGPT activity and total cholesterol level were gradually decreased and showed markedly decreasing effect after 4 days.

• 대한본초학회지
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• 제22권2호
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• pp.155-161
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• 2007

Objectives: Evidences suggests that Ginkgo biloba, a widely used traditional medicine, shows a hypoglycemic effect. Thus, we investigatd the effect of G. biloba extract (GB) on glucose uptake in L6 rat skeletal muscle cells. Method : Effect of GB on glucose uptake and phosphatidylinositol (PI) 3-kinase activity were assessed using Glucose uptake assay and PI 3-kinase assay, respectively. Also, AMP-activated protein kinase (AMPK), p38 mitogen activated protein kinase (p38 MAPK) expression were identified by Western blot. Results : Glucose uptake assay revealed that GB increased glucose uptake about 2.5-fold compared to thecontrol. GB stimulated the activity of PI 3-kinase which is a major switch element on the glucose uptake pathway. About a 6.5-fold increase in activity of PI 3-kinase was observed with GB. We then assessed the activity of AMPK, another regulatory molecule on the glucose uptake pathway. The result was that GB increased the phosphorylation level of both AMPK ${\alpha}$l and ${\alpha}$2. The activity of p38 MAPK, a downstream mediator of AMPK, was also increased by CB. Conclusion : These results suggest that GB may stimulate glucose uptake through both PI 3-kinase and AMPK mediated pathways in L6 skeletal muscle cells thereby contributing to glucose homeostasis.

• Preventive Nutrition and Food Science
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• 제15권3호
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• pp.176-183
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• 2010

The hypoglycemic effects of red ginsgeng-chungkukjang plus seaweeds, green laver and sea tangle, in streptozotocin (STZ)-induced diabetic rats were investigated. Five groups of male Sprague-Dawley rats weighing $140\pm10$ g (10 animals/group) were fed for four weeks with the following: nondiabetic control (NC group); STZ-induced diabetic (D group); diabetic rats fed 3% red ginseng (20%, w/w)-chungkukjang (D-RC group); diabetic rats fed RC containing 10% (w/w) green laver powder (D-RCG group); diabetic rats fed RC containing 10% (w/w) sea tangle powder (D-RCS group). Partially normalized body weight gain, FER, and blood glucose levels were observed in the D-RC, D-RCG and D-RCS groups as compared to the D group. In these three groups, serum levels of triglycerides, total cholesterol, and LDL-cholesterol were found to be lower than in the D group, whereas HDL-cholesterol levels increased. Serum insulin level in D was significantly lower than that of NC, although D-RC, D-RCG, and D-RCS almost recovered to the NC. Serum ALT activity was markedly increased in the D group, while the serum ALT levels in the D-RC, D-RCG, and D-RCS were almost the same as the NC group. Due to diabetes, hepatic xanthine oxidase (XO) activity was significantly increased and administration of red ginseng-chungkukjang or seaweeds resulted in decreased levels of the XO activity. Activity of hepatic antioxidant enzymes (superoxide dismutase and glutathione peroxidase) were significantly decreased in the D group, but the activity in the D-RC, D-RCG, and D-RCS groups were similar to that of the NC group. Results of the present study indicate that supplementation of red ginseng-chungkukjang with seaweed after the onset of diabetes ameliorated hyperglycemia via an increase in serum insulin.

• 한국식품영양과학회지
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• 제41권12호
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• pp.1716-1726
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• 2012

더위지기 추출물이 STZ으로 유발된 당뇨쥐에서 혈당, 지질 및 항산화효소에 미치는 영향을 알아보고자 용량(1 g, 2 g 및 3 g/kg b.w.)을 달리하여 14일간 경구투여한 실험에서 다음과 같은 결과를 얻었다. 정상군을 비롯한 당뇨유발군, 당뇨유발에 더위지기를 투여시킨 군을 14일간 실험한 결과 STZ 투여로 식이섭취량은 증가된 반면 체중은 감소되었는데, 더위지기 추출물을 2 g 투여 시 체중증가량의 변화는 관찰되지 않은 반면 식이섭취량은 억제되었다. 장기의 상대적인 중량비교에서 신장의 경우 당뇨대조군에 비해 더위지기 추출물을 1 g 투여 시 비대가 유의적으로 억제되었다. 당뇨로 인하여 증가된 ALT 활성도는 더위지기 추출물을 2 g과 3 g 투여 시, AST 활성도는 1 g과 3 g 투여 시 당뇨대조군에 비해 유의적으로 감소되었다. 혈장 포도당 함량은 실험 4일째부터 실험 14일째까지 당뇨대조군에 비해 더위지기 추출물을 2 g 투여함으로써 혈당치가 저하됨을 관찰할 수가 있었으며, 간의 글리코겐 함량도 더위지기 추출물을 2 g 투여 시 유의적으로 증가하였다. 혈장의 중성지방과 유리지방산 함량은 더위지기 추출물 2 g 투여 시 당뇨대조군에 비해 유의적으로 감소하였다. 동맥경화지수는 더위지기 추출물을 투여한 모든 당뇨실험군에서 유의적으로 저하되는 것으로 나타났다. 간의 MDA 함량이 모든 Ai투여군에서 당뇨대조군보다 유의적으로 감소하였다. 간에서의 항산화 효소 중 SOD 활성도는 당뇨대조군에 비해 더위지기 추출물을 3 g 투여 시 유의적으로 증가하였다. CAT와 GSH-px 활성도는 당뇨대조군에 비해 더위지기 추출물을 1 g과 3 g 투여 시 유의적으로 증가하였다. GST 활성도는 당뇨대조군에 비해 모든 Ai투여군이 유의적으로 높았으며 용량의존적으로 차이를 보였다. 이상의 실험결과를 통해 더위지기 추출물은 당뇨로 인한 체중저하를 방지하고, STZ로 유도한 고혈당을 완화시키는 항당뇨작용과 더불어 항산화효소의 활성도를 증가시켜 산화스트레스 감소를 유도하여 고혈당에 의한 조직손상을 감소시켜 주는 것으로 사료된다.

• 한국식품영양학회지
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• 제22권2호
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• pp.302-307
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• 2009

The present study was designed to clarify the antidiabetic activity and mechanism of Dioscorea rhizome in diabetic db/db mice. Mice were administered Dioscorea rhizome and rosiglitazone orally for 7 weeks and the effects of these compounds on fasting blood glucose, glucose tolerance and intestinal disaccharidase activity in db/db mice were evaluated. The fasting serum glucose of the D. rhizome treated group was reduced when compared with that of the db/db control group. In addition, the disaccharidase activities in homogenates of the proximal, middle and distal segment of the small intestine were significantly decreased response to D. rhizome treatment, especially in the middle segment. These results suggest that D. rhizome decreases blood glucose via a decrease in the activity of disaccharidase in the mucosa of the middle region of the small intestine in db/db mice.