• 생약학회지
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• 제52권2호
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• pp.77-83
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• 2021

The number of people suffering from diabetes have been increased around the world. In this study, we investigated the antidiabetic and antioxidant effects of Anthriscus sylvestris(L.) Hoffm and its main compounds. It was divided into root(R) and aerial part(AP) for comparative analysis. Total polyphenol, total flavonoid content was higher in AP extract, but nodakenin content was higher in R(1169.13 ± 6.00 mg/g) extract. Antioxidant activity was also higher in AP extract. To compare antidiabetic efficacy, we analyzed the effects of R and AP extracts on ɑ-glucosidase inhibition(AGI), dipeptidyl peptidase-4(DPP-4) and protein tyrosine phosphatase(PTP)1B activity. R and AP extracts showed similar effects on AGI and DPP-4 activity in a concentration dependent manner, and there was no effect on PTP1B activation. Glucose uptake(139.51 ± 3.19%) in 3T3-L1 cells was more effective in the AP extract-treated group than the positive control, rosiglitazone, group. Both R and AP extracts were effective in protecting against pancreatic beta cell damage caused by hyperglycemia. These results suggest that Anthriscus sylvestris(L.) Hoffm. could be used as a candidate for diabetes treatment.

• Plant Resources
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• 제4권3호
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• pp.161-170
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• 2001

A major portion of drugs used in Ayurvedic system of medicine which has been practiced since the early human civilization in Indian subcontinent were of plant origin. It should be noted that 70% of the population in this region depends on Ayurveda for their medical treatment and 60% of the drug resources are obtained from the Himalayan region. Therefore, Nepal becomes a potential source of plant drug resource since it occupies a major portion of the Himalaya. In the present paper, in general a current status of medicinal plant resources of Himalayan region especially Nepal will be discussed. In addition to this, a typical example of antidiabetic activity of Shilajit will be taken for the discussion. Shilajit is one of the crucial elements in several formulations including those of Rasayana, a therapy in Ayurveda, which has been practiced in the prevention of ageing and mental disorder. Although, Shilajit is widely used for the treatment of diabetes, no satisfactory scientific reports are available up to now. The crude Shilajit in the market is a dark brown or black rock-like substance collected from the Himalayan region with a strong smell of cow's stale urine. In our studies, Shilajit (collected in the central Himalayan region) prevented the diabetes in nonobese diabetic (NOD) mice model. Shilajit also prevented the diabetes in the rats against the action of multiple low-dose (10 mg/kg, i.v., 5 times) of streptozotocin. On the other hand, Shilajit did not show antioxidative activity. The preventive action of Shilajit on diabetes is mainly focused on the Thl and Th2 cell activities, since Th2 cells activity was found to be significantly upregulated. Shilajit, however, showed a mild action in controlling the blood sugar level in young, old, and mild diabetic rats, but not in the severe diabetic rats. It also stimulated the nitric oxide production in macrophages. Based on these evidences, the antidiabetic activities of Shilajit appear to be immunomodulative probably by protecting or strengthening insulin-producing b-cells in the pancreas. Further systematic research on constituents of Shilajit and its quality evaluation is necessary to enable the use of natural medicines in the treatment of diabetes.

• 한국응용과학기술학회지
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• 제35권4호
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• pp.1250-1259
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• 2018

여주(Momordica charantia) 열수 추출물을 젖산균(Leuconostoc mesenteroidesies)으로 발효하여 얻은 생산물의 항산화 및 항당뇨 효과를 관찰하였다. 여주 발효물(MC-LM)과 여주 추출물(MC)의 항산화 활성은 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)(ABTS) radical 소거 측정법을 사용하여 관찰하였다. MC 처리군은 radical 소거활성이 거의 나타나지 않았으나 MC-LM의 경우 $500{\mu}g/mL$ 농도에서 47%의 활성이 관찰되었으며 MC-LM의 농도가 증가함에 따라 활성이 유의하게(p<0.05) 증가하는 것을 확인 할 수 있었다. MC-LM은 MC에 비해 peroxyl radical에 의한 DNA의 산화적 손상을 더 효과적으로 억제하였으며 MC-LM의 농도가 증가함에 따라 strand breakage의 억제가 유의적으로 증가 하였다(p<0.05). 혈당량과 밀접한 관련이 있는 ${\alpha}-glucosidase$의 활성 억제정도를 측정한 결과 MC는 8 mg/mL 농도에서 ${\alpha}-glucosidase$의 활성을 30.1% 감소시켰고 같은 농도에서 MC-LM은 58.9% 감소 시켰다. 또한 alloxan에 의한 RIN-m5F 췌장세포 사멸에 발효물의 영향을 관찰한 결과 MC-LM을 농도별로 처리한 군에서 세포생존율이 유의적으로(p<0.05) 증가하였으며 $1000{\mu}g/mL$ 농도에서 MC군 보다 20% 높게 증가되었다. Alloxan에 의한 ${\beta}-cell$파괴를 유도하여 RIN-m5F cell이 분비한 인슐린의 측정결과 MC-LM을 농도별로 첨가한 모든 군에서 인슐린 분비능이 증가하는 경향을 보였으며, $1000{\mu}g/mL$ 농도에서 MC군 보다 15% 높게 증가되었다. 결론적으로 본 연구에서 관찰된 결과들을 통해 여주 발효물은 항산화 및 항당뇨 효과가 있는 것으로 확인되었다.

• 한국응용과학기술학회지
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• 제32권3호
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• pp.488-496
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• 2015

Streptozotocin(STZ)으로 유도된 당뇨 흰쥐에게 구척 에탄올 추출물을 1일 1회 7일간 1,000 mg/kg.b.w의 용량으로 투여 후 glucose함량과 당대사에 관여하는 효소인 glucose-6-phosphatase(G-6-Pase), glucose-6-phosphate dehydrogenase(G-6-PDH)과 glucokinase(GK)활성과 glycogen 함량과 triglyceride(T.G), total cholesterol 등의 지질대사에 관여하는 물질들과 항산화작용에 관여하는 glutathione-s-transferase(GST),Catalase(CAT), glutathione peroxidase(GSH-Px)활성과 glutathione(GSH)함량을 측정한 결과 구척 에탄올 추출물 투여군이 glucose, T.G, total cholesterol 등의 함량과 G-6-Pase 활성의 유의적인 감소(p<0.05)를 나타내었으며 glycogen 함량과 G-6-PDH, GK의 활성이 유의적인 증가(p<0.05)를 나타내었다. 이와 같이 구척 에탄올 추출물이 항당뇨, 항산화작용의 개선효과를 갖는 유효성분을 함유하고 있음을 알 수 있었다.

• Biomolecules & Therapeutics
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• 제7권4호
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• pp.335-341
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• 1999

Antidiabetic activity and mechanism of Supungsungihyan(SPSGH) were examined in db/db mice, which is a spontaneously hyperglycemic, hyperinsulinemic and obese animal model. SPSGH and acarbose were administered orally for 4 weeks. Fasting and non-fasting serum glucose, glycated hemoglobin and trig-lyceride of SPSGH treated group were all reduced when compared with those of db/db control group. At 12th week after birth, SPSGH increased an insulin secretion although statistic significance was not seen. Total activities of sucrose, maltase and lactase in SPSGH treated group were not significantly different from those in db/db control. On the other hand, sucrase and maltase activities in acarbose treated groups were increased. Effect of SPSGH on mRNA expression of glucose transporter(GLUT-4) was also examined by RT-PCR and in vitro transcription with co-amplification of rat $\beta$-actin gene as an internal standard. Muscular GLUT-4 mRNA expression in SPSGH treated group was increased significantly. These results may suggest that SPSGH lowered blood glucose ascribing to upregulation of muscular GLUT-4 mRNA expression.

• Journal of Applied Biological Chemistry
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• 제50권2호
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• pp.70-73
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• 2007

Antioxidant and anti-diabetic activities of acorn were evaluated by its potential for scavenging stable DPPH free radical, inhibition of lipid peroxidation, reducing power, and inhibiton of ${\alpha}-glucosidase\;and\;{\alpha}-amylase$. The water extract of acorn exhibited strong antioxidant and antidiabetic related activities in the tested model systems. Solvent fractionation of the water extract revealed that the water fraction and the EtOAc fraction had strong antioxidant activity, and inhibitory activity on ${\alpha}-glucosidase\;and\;{\alpha}-amylase$. The water fraction exhibited higher DPPH radical scavenging activity ($EC_{50}=7.19{\mu}g/mL$) than that of ${\alpha}-tocopherol\;(EC_{50}=7.59{\mu}g/mL)$. It is considered that water extract of acorn has the potential for natural antioxidant and anti-diabetic products.

• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1998년도 춘계학술대회
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• pp.31-35
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• 1998

A series of 2-oxiranecarboxylate derivatives was prepared as carnitine palmitoyl transferase I (CPT- -I) inhibitors for the development of new antidiabetic agents. The syntheses and biological activities were reported. The most promising derivative, 15b showed 2.5 times more hypoglycemic activity and 2 times lower acute toxicity compared to Etomoxir.

• 한국잠사곤충학회지
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• 제49권2호
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• pp.74-76
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• 2007

천잠 견단백질 가수분해 분말의 생리활성을 검토하여 비의류용 소재개발을 위한 기초 자료로 삼기 위하여 우선 항산화 및 항당뇨 활성을 탐색하였다. 1. 천잠 고치를 가수분해하여 제조한 분말은 항산화제인 비타민 C 대비 75% 내외의 항산화 활성을 나타내었다. 2. 천잠 견단백질 가수분해 분말은 혈당강하 효과도 나타내어 기능성 식품소재 적용 가능 물질로 사료된다.

• Fisheries and Aquatic Sciences
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• 제26권1호
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• pp.1-23
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• 2023

Marine bioactive substances (MBS), such as phlorotannins, collagens, peptides, sterols, and polysaccharides, are increasing attention as therapeutic agents for several diseases due to their pharmacological effects. Previous studies have demonstrated the biological activities of MBS including antibacterial, anticoagulant, antidiabetic, antimicrobial, anti-inflammatory activities. Among numerous human diseases, periodontitis is one of the high-prevalence inflammatory diseases in the world. To treat periodontitis, several surgeries (bone grafting, flap surgery, and soft tissue graft) are usually used. However, the surgery for patients with chronic periodontitis induces several side effects, including additional inflammatory responses at the operated site, chronic wound healing, and secondary surgery. Therefore, this review assessed the most recent trends in MBS using Google Scholar, PubMed, and Web of Science search engines to develop marine-derived therapeutic agents for periodontitis. Further, we summarized the current applications and therapeutic potential of MBS to serve as a reference for developing novel technologies applied to MBS against periodontitis treatment.

• 동의생리병리학회지
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• 제21권5호
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• pp.1163-1169
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• 2007

Effects of Sotosaja hwan on Blood Glucose, Hyperlipidemia, Polyol Pathway and Antioxidative Mechanism in ob/ob Mouse Diabetes is a disease in which the body does not produce or properly use insulin. Etiological studies of diabetes and its complications showed that oxidative stress might play a major role. Therefore, many efforts have been tried to regulate free oxygen radicals for treating diabetes and its complications. Sotosaja-hwan has been known to be effective for the antiaging and composed of four crude herbs. In male ob/ob mouse in severe obesity, hyperinsulinemia and hyperlipidemia, which are features of NIDDM, the hyperglycemic activites and mechanisms of Sotosaja-hwan were examined. Mice were grouped and treated for 5 weeks as follows. Both the lean (C57/BL6J black mice) and diabetic (ob/ob mice) control groups received standard chow. The experimental groups were fed with a diet of chow supplemented with 30 and 90 mg Sotosaja-hwan per 1 kg of body weight for 14 days. The effects of Sotosaja-hwan extract on the ob/ob mice were observed by measuring the serum levels of glucose, insulin, lipid components, and the kidney levels of superoxide anion radical $({\cdot}O_2)$, MDA+HAE, GSH/GSSG ratio, and also the enzyme activities involved in polyol pathway. Sotosaja-hwan lowered the levels of serum glucose and insulin in a dose dependent manner. Total cholesterol, triglyceride and free fatty acid levels were decreased, while the HDL-cholesterol level was increased, in Sotosaja-hwan treated groups. Renal aldose reductase and sorbitol dehydrogenase activities were increased in the ob/ob mice, whereas those were inhibited in the Sotosaja-hwan-administered groups. Sotosaja-hwan inhibited the generation of ${\cdot}O_2$ in the kidney. Finally, MDA+HAE levels was increased and GSH/GSSG ratio was decreased in the ob/ob mice, whereas those were improved in the Sotosaja-hwan-administered groups. Sotosaja-hwan showed the antidiabetic and anti hyperlipidemic activities by regulating the activities of polyol pathway enzymes, scavenging reactive oxygen species and reducing the MDA+HAE levels in the ob/ob mice.