• Biomolecules & Therapeutics
• /
• 제26권2호
• /
• pp.130-138
• /
• 2018

Quercetin and resveratrol are known to have beneficial effects on the diabetes and diabetic complication, however, the effects of combined treatment of these compounds on diabetes are not fully revealed. Therefore, the present study was designed to investigate the combined antidiabetic action of quercetin (QE) and resveratrol (RS) in streptozotocin (STZ)-induced diabetic rats. To test the effects of co-treated with these compounds on diabetes, serum glucose, insulin, lipid profiles, oxidative stress biomarkers, and ions were determined. Additionally, the activities of hepatic glucose metabolic enzymes and histological analyses of pancreatic tissues were evaluated. 50 male Sprague-Dawley rats were divided into five groups; normal control, 50 mg/kg STZ-induced diabetic, and three (30 mg/kg QE, 10 mg/kg RS, and combined) compound-treated diabetic groups. The elevated serum blood glucose levels, insulin levels, and dyslipidemia in diabetic rats were significantly improved by QE, RS, and combined treatments. Oxidative stress and tissue injury biomarkers were dramatically inhibited by these compounds. They also shown to improve the hematological parameters which were shown to the hyperlactatemia and ketoacidosis as main causes of diabetic complications. The compounds treatment maintained the activities of hepatic glucose metabolic enzymes and structure of pancreatic ${\beta}-cells$ from the diabetes, and it is noteworthy that cotreatment with QE and RS showed the most preventive effect on the diabetic rats. Therefore, our study suggests that cotreatment with QE and RS has beneficial effects against diabetes. We further suggest that cotreatment with QE and RS has the potential for use as an alternative therapeutic strategy for diabetes.

• Imaging Science in Dentistry
• /
• 제33권1호
• /
• pp.5-14
• /
• 2003

Purpose: To observe the histologic pattern of healing in molar tooth extraction sockets of streptozotocin-induced diabetic rats following irradiation. Materials and Methods: Mature Sprague-Dawley rats were divided into three groups: control, diabetic, and diabetic-irradiated groups. Diabetes mellitus was induced by injecting streptozotocin. Control rats were injected with a citrate buffer only. After 5 days, the right maxillary first molar was extracted under general anesthesia from each of the rats. After the extraction, rats in the diabetic-irradiated group were irradiated with a single absorbed dose of 10 Gy to the head and neck region. The rats were killed at 1, 3, 7, 14, 21, and 28 days after treatment. Tissue sections were stained with hematoxylin-eosin and Masson's trichrome. Results: In the diabetic and diabetic-irradiated groups, the early healing process of the socket extraction was similar to the control group, but bone formation was delayed at 7 days after the treatment. In the diabetic-irradiated group, alveolar bone surrounding the extraction socket showed signs of necrosis at 3 days after treatment, and hemorrhage was observed in connective tissue within the extraction socket at 14 days after treatment. Conclusion: This experiment revealed that the healing process of the extraction socket was severely delayed and retarded by irradiation in the diabetic state.

• 한국식품과학회지
• /
• 제35권2호
• /
• pp.280-285
• /
• 2003

본 연구에서는 streptozotocin-유도 당뇨쥐를 이용하여 배양인삼의 첨가식이가 혈당강하 및 지질대사 등에 미치는 영향을 조사하기 위해 대조군과 당뇨대조군, 5% 및 10% 배야인삼첨가군 등 모두 4군으로 나누어 해당식이로 2주간 사육하였다. 배양인삼은 당뇨쥐의 체중증가와 혈당저하에 효과를 나타냈으며, 수분 및 사료 섭취량도 줄여 당뇨병 증세의 개선효과를 보였다. 또한 당뇨쥐의 지질대사를 개선하여 혈장중성지방, 총 콜레스테롤 및 동맥경화지수를 저하시키고 총 콜레스테롤에 대한 HDL-콜레스테롤의 비율을 증가시켰다. AST 및 ALT의 활성은 5% 첨가군에서만 당뇨대조군에 비해 낮은 값을 보였으며, 10% 첨가군에서는 오히려 높은 값을 보였다. Creatinine의 함량은 모든 첨가군에서 당뇨대조군에 비해 현저히 낮은 값을 보였다.

• 대한지역사회영양학회지
• /
• 제13권2호
• /
• pp.276-287
• /
• 2008

Diabetic mellitus in an older population is associated with increased basal oxidative stress and free radical accentuated by hyperglycemic challenge. Enhanced free radical in diabetic elderly can cause the oxidative damage and such damage can be protected by antioxidant defense system. It is believed that vitamin C, A and E are the most abundant and effective antioxidants in human plasma. The purpose of this study was to determine the antioxidant status in Korean diabetic elderly using the case-control study. The antioxidant status was examined by determining plasma levels of antioxidant vitamins (vitamin C, A, E, ${\beta}$-carotene), total antioxidant status (TAS) and thiobarbituric acid reactive substance (TBARS) and intakes of vitamin C, A, ${\beta}$-carotene and retiol. Fasting glucose and HbA1c levels and serum lipid profiles (triglyceride (TG), total cholesterol, HDL-cholesterol and LDL-cholesterol) were also determined. Diabetic subjects were 122 elderly persons over 60 years old, visiting public health center, and control subjects were 96 healthy elderly persons living in Ulsan, Korea and they were matched by age, gender, smoking and drinking status. The diabetic and control subjects were divided into sub-groups according to the status of using diet therapy and vitamin supplement. The subjects were interviewed to collect data on their general characteristics, disease history, vitamin supplement, diet therapy and health-related habits by questionnaires. Their dietary intakes were obtained by means of semi-quantitative food frequency questionnaires (SQFFQ). Fasting plasma glucose and HbA1c levels were significantly higher in diabetes than in control subjects, and plasma total cholesterol level of diabetes was not significantly different from that of control subjects. However serum HDL cholesterol level of diabetes was significantly lower and serum TG level of diabetes was significantly higher than those of control group. The average vitamin A and ${\beta}$-carotene intakes of diabetes were significantly higher than those of control subjects. There was no significant difference in plasma vitamin C, ${\beta}$-carotene, and TBARS levels between two groups, but plasma vitamin A, E and TAS levels were significantly higher in diabetes than those in control group. Plasma vitamin A and TAS levels of diabetic subjects using diet therapy were higher than those of control using diet therapy, and plasma vitamin E, ${\beta}$-carotene and TAS levels of diabetic subjects using vitamin supplements were significantly higher than those of controls using vitamin supplements. These results suggested that diabetic mellitus could enhance antioxidant defences against reactive oxygen species and interest in healthy eating such as consumption of more antioxidant nutrients.

• Journal of Nutrition and Health
• /
• 제33권3호
• /
• pp.250-256
• /
• 2000

Hyperhomocysteinemia has been shown to be associated with increased risks for macrovascular angiopathy. The present study was conducted to document the relationship between plasma homocysteine levels and the presence of macrovascular angiopath in patients with Type II diabetes mellitus. Plasma total homocysteine was determined by a HPLC-fluorescence detection method in a total of 238 subjects, 127 diabetic patients and 111 control. Dietary information including folate intake was assessed by a 24-hour recall in a total 113 subjects, 70 diabetic patients and 43 control. Folate intake was significantly lower inn patients with diabetes mellitus than that in the control. The lowered folate intake in the diabetic patients was mainly due to reduced intakes of fruits and vegetables. The average plasma homocysteine level of patients with MA was 14.2$\mu$㏖/L, which was significantly higher than that of either the patients without MA(11.4$\mu$㏖/L) or the control(11.5$\mu$㏖/L). Twenty five percent of the diabetic patients were positively correlated with age (r=0.20), body weight (r=0.28), body mass index (r=0.28), body mass index (r=0.18), diastolic blood pressure (r=0.20), and total cholesterol (r=0.14). cigarette smokers had significantly higher levels of plasma homocysteine than the non-smokers. Further prospective studies are needed to investigate whether folate or other B vitamin supplementation could be beneficial for the prevention of hyperhomocysteinemia or macrovascular angiopathy in the diabetic patients.

• Archives of Plastic Surgery
• /
• 제36권6호
• /
• pp.679-684
• /
• 2009

Purpose: Human lipoaspirate cells are relatively easy to obtain in large quantities without cell culture. The aim of this in vitro pilot study was to determine the effect of cell therapy using uncultured lipoaspirate cells on cell proliferation and collagen synthesis of diabetic fibroblasts, which are the major contributing factors in wound healing. Methods: In order to get diabetic fibroblasts, dermis tissues were obtained from foot skin of diabetic patients who underwent debridements or toe amputations(n = 4). In order to isolate lipoaspirate cells, the same diabetic patients' abdominal adipose tissues were obtained by liposuction. The diabetic fibroblasts were co - cultured with or without autogenous lipoaspirate cells using porous culture plate insert. Initial numbers of the lipoaspirate cells and diabetic fibroblasts seeded were 15,000 cells/well, respectively. For cell proliferation assay, two treatment groups were included. In group I, diabetic fibroblasts were cultured with the insert having no cells, which serves as a control. In group II, the lipoaspirate cells were added in the culture plate insert. For collagen synthesis assay, one additional group(group III), in which diabetic fibroblasts were not seeded in the well and only lipoaspirate cells inside the insert were incubated without diabetic fibroblasts, was included for a reference. Results: One hundred to one hundred sixty thousand lipoaspirate cells were isolated per ml of aspirated adipose tissue. After 3 - day incubation, the mean cell numbers in group I and II were 17,294/well and 22,163/well. The mean collagen level in group I, II, and III were 29, 41, and 2 ng/ml, respectively. These results imply that both cell proliferation and collagen synthesis in the lipoaspirate cell treatment group were 28 and 44 percents higher than in the control group, respectively(p < 0.05). Conclusion: Uncultured lipoaspirate cell autografts may stimulate the wound healing activity of diabetic fibroblasts.

• Journal of Preventive Medicine and Public Health
• /
• 제33권3호
• /
• pp.349-363
• /
• 2000

Objectives : Generally, it seemed that the therapeutic result in diabetic patients was changed by compliance. This study was conducted on the basis of assumption that the therapeutic result id diabetic patients could control according to compliance. This study was conducted to analyze the related factors in association with compliance to drug, diet and exercise therapy. Methods : 224 diabetic patients in Kyungpook National University Hospital were selected through the interviews and HbA1c values from 1 Jan. to 28 Feb.1997. The drug compliance was tested by regularity of drug administration, the diet compliance was tested by restriction of food, exactly allocation, balance of nutrient, measuring food and the exercise compliance was tested by regularity of exercise per day. We assessed compliance by percentage, $x^2-test$ and generalized logit regression model(method:enter). Results : The significant variable was the satisfaction to medical personnels in drug, the knowledge to disease in diet, the participation of the diabetic education in exercise therapy and the satisfaction to medical personnels in HbA1c. Using the generalized logit model(method : enter) in compliance change, the significant variables were the satisfaction to medical personnels and the complication in drug; the significant variables were the age at the first diagnosis, the family history, the concern of health, the knowledge of disease, the self-exertion for therapy and the complication in diet: the only significant variable was the gender in exercise therapy. Conclusions : The degree of glycemic control in diabetic patients was influenced by compliance. In order to improve patient's compliance, we must foster the knowledge on the diseases, lead participation for diabetic education. Because the satisfaction to medical personnels was the important variables, we must build up good relationship between doctors and patients.

• 한국식품과학회지
• /
• 제38권3호
• /
• pp.427-431
• /
• 2006

췌장에 ${\beta}-cell$에만 특이적으로 작용하고 다른 기관에는 영향을 주지 않는 것으로 보고되어 있는 streptozotocin을 흰쥐에게 투여하여 당뇨병을 유발시킨 다음 백미, 현미, 거대배아미를 6주간 급여한 후 혈당강화 효과를 알아보았다. 실험기간동안 모든 당뇨군들의 체중증가는 정상군에 비해서는 유의적으로 낮았다. 당뇨대조군에 비해서는 거대배아마를 급여한 군에서 체중감소현상이 억제되었다. 장기중 맹장의 경우 2배 이상의 비대현상이 나타났고 정상쥐에 비해 당뇨쥐가 수분섭취량, 소변배설량, 혈당이 유의적으로 높게 나타났는데 당뇨병의 주요 증세가 다갈(polydipsia), 다뇨(polyuria), 다식(polyphagia), 고혈당인점에서 당뇨군에 비해서 가대배아미는 당뇨증세가 어느 정도 호전효과가 있음을 보여주고 있다. 식이섭취량은 정상군에 비해 당뇨실험군들이 높게 나타났으며 수분섭취량은 정상군에 비해 당뇨대조군이 수분 섭취량증가가 나타났다. 당뇨실험군 내에서는 당뇨대조군에 비해 가대배아미군이 수분섭취량이 감소하였다. 뇨 배설량은 정상군에 비해 당뇨대조군이 유의적으로 높게 나타났으며 당뇨대조군에 비해서 거대배아미군이 감소하였다. 장 기능 조절로서 장통과 시간과 분변고형물의 양에는 역의 상관관계로 식이섬유소의 함량이 높은 쌀 품종인 거대배아미는 장통과 시간이 짧으며 분변고형물의 양을 유의적으로 증가시켰으며 변의 수분보유량도 정상군에 비해 당뇨실험군들중 거대배아미군 전반적으로 높았다. 위 결과에서 거대배아미 급여가 당뇨동물의 공복시 혈당 수준을 유의적으로 낮추는데 효과가 있었으며 이당류 분해 효소 활성의 경우 정상군에 비해서 당뇨군이 lactase, maltase, sucrase 활성이 현저하게 증가 되었지만 당뇨실험군중에는 거대배아미가 소장점막부분의 lactase, maltase, sucrase의 활성을 저해시킴으로서 혈당상승을 억제시키는 것으로 볼 수 있었다. 이상의 결과로 백미, 현미에 비해서 거대배아미를 급여한 당뇨동물에서 혈당을 억제시키는 효과를 보았다.

• 한국식품영양학회지
• /
• 제29권3호
• /
• pp.392-403
• /
• 2016

The purpose of this study was to investigate the relations between HbA1c level and health risk factor. For analysis, 330 elderly women aged 65 years and over were recruited in Jeonla province, Korea. The subjects were classified into two groups according to their HbA1c level; the diabetic group (HbA1c level${\geq}6.5%$, n=68, 20.6%) and control group (HbA1c level<6.5%, n=262, 79.4%). Demographic characteristics were collected, as well as information on physical measurements, blood tests for biochemical indicators, a health status and health-related life style, dietary behavior, favorite food groups, consumption frequency of food groups and nutrient intake. Educational level of the diabetic group was significantly lower than that of the control group. The height of the diabetic group was shorter, and percentage fat of the diabetic group was higher than those of the control group. In the diabetic group, the higher concentrations of creatinine and activity of alkaline phosphatase were found to be significantly unfavorable factors. Therefore, the diabetic group was assumed to be at risk of decreased liver and renal function. The self-rated health level of the diabetic group has a declining tendency, while the medicine intake was significantly higher than that of the control group, but there are no significant differences in visiting frequency of hospital and community health center. The distribution of physical activity showed a significant difference between the groups. Although there are no significant differences in nutrient intake, the diabetic group had relatively inferior nutrient intake of diet, especially vitamin C, as contrasted with the control group. In conclusion, the weight control and increasing physical activity may be effective in the prevention of the diabetes and continuous education and intervention by specialized nutritionists will be needed for diabetic patients. These results could be useful to plan effective strategies to increase the health-life expectancy and the prevention of the diabetes of Korean elderly people living in rural areas.

• 한국식품과학회지
• /
• 제34권4호
• /
• pp.725-731
• /
• 2002

본 연구는 정상군과 streptozotocin으로 당뇨병을 유발시킨 $230{\sim}250\;g$의 흰쥐를 이용하여 실험하였다. 당뇨실험군은 당뇨대조군과 택사투여군(Ac), 택사와 Cr병용투여군(Ac-Cr), Cr투여군(Cr)으로 구분하여 실험하였다. 14일간 택사의 $H_2O$분획물(1000 mg/kg b.w.)과 Cr(100 mg/kg b.w.)을 경구투여한 후 혈당과 혈중 지질함량을 분석하였다. 정상군을 제외한 모든 실험군에서 체중이 감소하였으며, 당뇨대조군에 비해 당뇨실험군의 체중은 높은 수준으로 나타났으며, 특히 Cr투여군의 체중은 유의적으로 높았다(p<0.05). 택사와 Cr의 투여시 실험 14일째에 당뇨대조군에 비해 당뇨 실험군에서 혈당이 유의적으로 감소되었다. 혈중 콜레스테롤 수준도 실험 14일째에 다른 실험군과 대조군에 비해 Cr과 택사병용투여군에서 유의적으로 낮았으며, 혈장 중성지방의 함량도 당뇨대조군에 비해 모든 실험군에서 낮은 수준을 보였으며 특히 택사-Cr병용투여군에서는 유의적으로 낮은 수준을 보였다(p<0.05). Cr과 택사의 병용 투여의 경우 혈당과 혈장 지질함량의 감소효과가 나타났으나, 두 물질의 병용 투여에 따른 상승효과는 뚜렷하지 않았다. HDL-cholesterol함량은 Cr 투여시 당뇨대조군에 비해 낮은 수준을 나타냈으나, 유의적인 차이는 보이지 않았다. 이 결과는 택사와 Cr의 투여가 실험 당뇨쥐의 혈당과 혈중 지질 함량 감소에 효과가 있음을 보여주고 있다.