• Preventive Nutrition and Food Science
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• 제14권2호
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• pp.95-101
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• 2009

In this study, we assessed the effects of Se-methylselenocysteine (MSC) pretreatment on the antioxidant system in the pancreas and the development of alloxan-induced diabetes in rats. The rats were treated with MSC at a dose of 0.75 mg/rat/day for 2 weeks. The MSC-treated rats evidenced significantly increased glutathione content, GSH/GSSG ratio, and glutathione peroxidase (GPx) and glutathione reductase (GRd) activities in the pancreas. Diabetes was induced via alloxan injection. The alloxan-diabetic rats evidenced significantly reduced glutathione content and glucose 6-phosphate dehydrogenase (G6PD) activity and increased catalase activity in the pancreas, when measured 3 days after the alloxan injection. 2-week MSC pretreatment was shown to prevent the alloxan-induced hyperglycemia as well as changes in glutathione content, G6PD activity, and catalase activity. The results of this study indicate that the prevention of alloxan-diabetes by MSC pretreatment is associated with its effects on antioxidants in the pancreas, namely, the increase in cellular content and the reduction of glutathione by the facilitation of glutathione recycling induced via increased GPx, GRd, and G6PD activities.

• Advances in Traditional Medicine
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• 제8권4호
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• pp.349-353
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• 2008

Anti-diabetic effect was observed with Thespesia lampas Dalz & Gibs (Family: Malvaceae) when given as a root extract in normal as well as alloxan induced diabetic rats. The effects, however, were more pronounced in diabetic animals in which administration of plant extract for 15 days after alloxan induced diabetes, significantly reduced blood glucose levels. After alloxan induced diabetes it was observed that both standard drug (glibenclamide) and aqueous extract of Thespesia lampas were significantly superior to control in reducing blood sugar on long term treatment (15 days). The aqueous extract of T. lampas (300 and 600 mg/kg) reduced the blood glucose levels from $349.2{\pm}7.2$ to $120.7{\pm}4.6$ and $346.3{\pm}3.4$ to $101.8{\pm}6.3$, respectively. The data suggested that T. lampas could be of beneficial in diabetes mellitus in controlling blood sugar. The present investigation established pharmacological evidence to support the folklore claim as an anti-diabetic.

• Nutrition Research and Practice
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• 제13권5호
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• pp.377-383
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• 2019

BACKGROUND/OBJECTIVES: Hyperglycemia-induced hepatic damage has been recognized as one of the major cause of complications in diabetes. Hepatic complications are associated with inflammation and oxidative stress in diabetes. In this study, we investigated the hypothesis that gamma-tocopherol (GT) supplementation ameliorates NLRP3 inflammasome associated hepatic inflammation in diabetes. MATERIALS/METHODS: Diabetes was induced by the intraperitoneal injection of alloxan (150 mg/kg. BW) in ICR mice. All mice were fed with a control diet (AIN-76A). After diabetes was induced (fasting glucose level ${\geq}250mg/dL$), the mice were treated with tocopherol-stripped corn oil or GT-supplemented (35 mg/kg) corn oil, respectively, by gavage for 2 weeks. RESULTS: GT supplementation reduced fasting blood glucose levels in diabetic mice relative to non-treated diabetic mice. Moreover, GT supplementation ameliorated hyperglycemia-induced hepatic damage by regulation of NOD-like receptor protein 3 (NLRP3)-inflammasome associated inflammation represented by NLRP3, apoptosis-associated speck-like protein containing a caspase-recruitment domain, caspase-1, nuclear $factor-{\kappa}B$ pathway as well as oxidative stress demonstrated by nuclear factor erythroid 2-related factor 2, NAD(P)H dehydrogenase quinone 1, catalase and glutathione-dependent peroxidase in diabetic mice. CONCLUSION: The findings suggested that GT supplementation ameliorated hepatic damage by attenuating inflammation and oxidative stress in alloxan-induced diabetic mice. Taken together, GT could be a beneficial nutrient that can ameliorate inflammatory responses associated with NLRP3 inflammasome in hyperglycemia-induced hepatic damage.

• BMB Reports
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• 제32권2호
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• pp.161-167
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• 1999

The role of oxidative stress in the initiation and the complication of diabetes was examined by monitoring blood glucose increase and oxidative DNA damage in rats treated with alloxan or streptozotocin (STZ). Oxidative DNA damage was assessed by quantitating 8-oxo-2'-deoxyguanosine ($oxo^8dG)$ excreted in urine and the $oxo^8dG$ accumulated in pancreas DNA. Both alloxan and STZ treatments resulted in an abrupt increase in blood glucose and significant increases in urinary and pancreatic $oxo^8dG$. Pretreatment of buthionine sulfoximine (BSO), a glutathione-depleting agent, slightly potentiated the increase of blood glucose and urinary $oxo^8dG$ in the alloxan- and STZ-treated rats. Furthermore, the BSO pretreatment caused significant amplification of pancreatic $oxo^8dG$ increase in the rats. On the other hand, pretreatment with 1,10- phenanthroline (o-phen), a chelator of divalent cations, showed different results between alloxan- and STZ-treated rats. The o-phen pretreatment completely blocked diabetes and the increase of $oxo^8dG$ by alloxan treatment, while it potentiated the increase of blood glucose and $oxo^8dG$ by STZ treatment. The results demonstrate that the causative effect of alloxan on diabetes may be the generation of reactive oxygen species through a Fenton type reaction, but that of STZ may not.

• 생약학회지
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• 제7권2호
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• pp.111-114
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• 1976

This study was aimed to investigate the effects of Ginseng ethanol extract on Diabetes induced by alloxan in comparison with that of insulin. The blood sugar, blood urea nitrogen, glutamic oxaloacetic transaminase and cholesterol were measured by spectrophotometry. The results were obtained as follows. 1. Ethanol extract of Ginseng increased the blood sugar level in normal rats. 2. Ethanol extract of Ginseng restrained the increase of blood sugar in diabetes induced by alloxan. 3. Ethanol extract of Ginseng acted to oppose a rapid decrease of blood sugar by insulin. 4. Blood urea nitrogen, glutamic oxaloacetic transaminase and cholesterol level in blood were not affected by Ginseng.

• 한국식품영양과학회지
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• 제16권3호
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• pp.41-47
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• 1987

These studies were conducted to investigate effects of Prunus mume extract on experimentally alloxan-induced diabetes in rabbites, antibacterial activity and acute toxicity in mice ; 1. $LD_{50}$ of Prunus mume extract(P.M.E.) was 15.25g/kg intraperitoneally in mice. 2. P.M.E. showed more significant recuperative effect compared to the control group in alloxan-induced diabetes of rabbits. 1) P.M.E. 800mg/kg bodyweight exhibited more excellent hypoglycemic effect afte 6 days and adjacent to the normal level at 14th day. 2) SGPT activity was significantly decreased after 6 days, and the blood levels of total cholesterol and urea-nitrogen were significant in 800mg/kg at 6 days and 10 days respectively. 3. In antibacterial activity test P.M.E. was active at 0.195mg/kg in Staphyllococcus aureus, 3.125mg/ml in E. coli, Enterobacter cloacae, Klebsiella oxytoca, and in Pseudomonas aeruginosa at 0.391mg/ml. 4. In histological findings, the sample groups were deeply stained, fully granulated and partial degranulation of ${\beta}-cells$, and a few vacuolar and vesicular changes of cytoplasm than alloxan treated group in proportion to the sample amounts.

• Anatomy and Cell Biology
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• 제57권3호
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• pp.446-458
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• 2024

The study aims to compare the action of Pleurotus cornucopiae and glibenclamide on alloxan-induced diabetes and ascertain how an aqueous extract of the edible mushroom regulates the expression of nuclear factor erythroid 2-related factor 2 (Nrf2), oxidative stress biomarkers and renal toxicity in a diabetic male Wistar rat model. Twenty-five adult male Wistar rats were randomly grouped into five groups with five rats per. Group 1 and those in the treatment groups received normal feed and water ad libitum. Group 2 received intraperitoneal administration of alloxan monohydrate (150 mg/kg body weight). Group 3 received alloxan monohydrate and glibenclamide (5 mg/kg body weight bwt), group 4 received alloxan monohydrate plus the extract (250 mg/kg bwt) and group 5 received alloxan monohydrate plus the extract (500 mg/kg bwt). The administration of glibenclamide plus the extract was oral for 14 days. Glibenclamide and the extract lowered blood glucose level, catalase, and glutathione peroxidase activities, increased the superoxide dismutase (SOD) activity in rats with alloxan induced diabetes. The extract at 500 mg/kg bwt reduced the plasma urea and sodium concentration in the treated rats. The extract and glibenclamide could detoxify alloxan and restore its induced renal degeneration and glomeruli atrophy, intra renal hemorrhage and inflammation and oxidative biomarkers through activation of Nrf2 expression. The drug glibenclamide and P. cornucopiae have appreciable hypoglycemic activity and potential to restore the normal renal architecture in the rats, hence they offer similar curative effects. Additionally, the extract at 500 mg/kg bwt activated SOD and Nrf2 expression more than glibenclamide in rats with alloxan-induced diabetes.

• 한국식품영양과학회지
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• 제33권8호
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• pp.1273-1278
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• 2004

당뇨병의 합병증 중 지질대사성 질환으로 유도되는 대사경로를 규명하고자 6주령의 흰쥐(Sprague-Dawley) 24마리를 3군으로 나누어 4주간 chemical pure diet로 사육하였다. 당뇨병을 유발하고자 alloxan을 20 mg/kg BW 또는 40 mg BW를 매주 1회 투여하였다. 혈당치를 측정하여 당뇨증상을 확인하였으며 혈청 및 간의 지질수준과 각 조직의 지방산 조성을 측정하여 당뇨병에 의한 지질대사의 변화를 비교 검토하였다. Alloxan 40 mg 투여군에서 심한 당뇨병 유발로 체중감소가 크게 나타났으며, 식이섭취량과 간중량/100 g BW도 다른 군에 비하여 유의적으로 높았다. 혈당의 변화는 alloxan 40 mg/kg BW 투여한 군이 다른 군에 비해 약 2배정도로 높게 나타나 당뇨병이 유발되었음을 확실하게 알 수 있었다. 혈청지질에서 cholesterol 함량은 alloxan 40 mg/kg BW 투여한 군에서 다른 군보다 다소 증가된 경향을 보였다. Triglyceride도 역시 alloxan 투여군에서 높은 경향으로 나타났다. 혈청 HDL-cholesterol은 군간의 유의적인 차이가 없었으며 HDL-/total cholesterol 비율도 군간에 유의적인 차이는 없었으나, 다른 군보다 alloxan 40 mg/kg BW을 투여한 군이 다소 높은 경향이었다. 간 지질에서 cholesterol 함량은 alloxan 40 mg/kg BW 투여군이 다른 군에 비해 유의적으로 낮았다. Triglyceride 함량은 군간에 유의적인 차이가 없었다. 각 조직의 인지질 지방산 조성을 보면 alloxan 40 mg/kg BW 투여군에서 lionleic acid는 증가하고 반면 arachidonic acid는 감소되어 그 결과 arachidonic/linoleic acid의 비율이 낮은 경향을 보였으며 특히 혈청과 비장에서는 그 경향이 뚜렷하여 유의적인 차이를 나타냈다. 이상의 결과를 종합하면, 당뇨병이 유도된 흰쥐에서 간의 중량 및 혈청의 지질이 증가되었고, 조직의 인지질에서 desaturation이 억제되었으므로 그로 인하여 지질대사에 관련된 합병증이 유도되는 것으로 판단되었다.

• 동국한의학연구소논문집
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• 제6권1호
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• pp.151-161
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• 1997

Alloxan은 glucokinase 효소(酵素)가 기질(基質)인 glucose의 결합부위(結合部位)인 -SH기(基)를 경쟁적(競爭的)으로 저해(沮害)함으로써 glucose의 초기(初期) 인산화(燐酸化)를 억제(抑制)하여 당뇨병(糖尿病)을 유도(誘導)시키는 화학물질(化學物質)이다. 본(本) 연구(硏究)에서는 alloxan 처리(處理) 당뇨(糖尿) 마우스에 대(對)하여 청양생진(淸凉生津), 해갈지구(解渴止嘔)의 효능(效能)이 알려진 비파엽(枇杷葉)이 어떠한 효과(效果)가 있는지를 알아보고자 하였다. 실험동물(實驗動物)을 alloxan으로 처리(處理)하여 당뇨병(糖尿病)을 유발(誘發)시킨 후(後) glucose의 인산화(燐酸化)에 관여(關與)하는 glucokinase와 hexokinase의 활성(活性)을 살펴보았다. 그 결과(結果), 비파엽(枇杷葉)은 당뇨병(糖尿病)으로 인(因)하여 증가(增加)된 glucose의 감소(減少) 효과(效果)와 insulin 분비(分泌)의 정상(正常) 회복능(回復能) 인정(認定)되었으며, glucokinase와 hexokinase를 활성화(活性化)시키는 것으로 나타나 당뇨병(糖尿病)에 효과(效果)가 있는 것으로 사료(思料)된다.

• 한국한의학연구원논문집
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• 제5권1호
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• pp.17-25
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• 1999

To investigate recovery effects of Insambackhotang, which have been used clinically in diabetes therapny, on kidney failure of a diabetes-induced mouse by Alloxan administration, body and kidney weight changes of mice, BUN, creatinine, glucose and MDA level in serum, MDA level in kidney tissue. 1. A hyperglycemia(250-400mg/dl) mouse induced by Alloxan(75mg/kg) showed significant decline of kidney function: increase of BUN and creatinine in serum, excretion of glucose, protein, ketone in urine were observed at 4 days after the treatment. 2. Increase of the mouse body and kidney weight and a ratio of the kidney/body weight of Insambackhotang treated group as compared to the control group was significantly inhibited. 3. The BUN, creatinine level in serum of Insambackhotang treated group as compared to the control group were significantly inhibited. 4. The MDA level in serum and kidney tissue of Insambackhotang treated group as compared to the control group were significantly inhibited.