• Biomolecules & Therapeutics
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• 제9권4호
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• pp.277-281
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• 2001

Chromium is an essential nutrient and participates in glucose and lipid metabolism in human beings and animals. The present study was conducted to assess the effects of chromium picolinate (Cr-pic) on glucose tolerance and insulin sensitivity in type I and ll diabetic rats. The experimental groups were type I diabetic (streptozotocin-induced: 40 mg/kg, i.p.) and type II diabetic (Goto-Kakizaki rats) models. Each group was subdivided into control. low-dose and high-dose of Cr-pic treated groups. The Cr-pic was orally administered with Cr-pic (100 mg/kg for low dose group and 200 mg/kg for high dose group) for 4 weeks. And then we performed intraperitoneal glucose tolerance test (IPGTT) and insulin sensitivity test (ITT). The glucose tolerance test was carried out by inection of glucose (2 g/kg, i.p.). The peripheral insulin sensitivity test was con- ducted by injection of insulin (5 units/kg, s.c.) and glucose. We performed determining of blood glucose concentration at 0, 10, 30, 60, 90, and 120 min using automated glucose analyzer. The plasma insulin concentration was determined by rat insulin EIA kit. Administration of Cr-pic improved weight gain in all group s with higher significant in the low-dose group. There was no significance between the control and the Cr-pic treated groups in the area under the blood glucose curve and serum insulin concentration plots of IPGTT and peripheral ITT in type I diabetic rats. But Cr-pic treated groups showed significantly lower levels of the area under the blood glucose currie during IPGTT and ITT and the high-dose group showed less effects compared with the low-dose group in the type II diabetic rats. The plasma insulin concentration of both diabetic groups was not influenced by Cr-pic supplementation. We can conclude that chromium picolinate may improve the endogenous and exogenous insulin action and peripheral insulin sensitivity in type II diabetic rats.

• 한국식품영양과학회지
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• 제33권7호
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• pp.1126-1132
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• 2004

본 연구에서는 발효콩을 주원료로 한 기능성 식품이 streptozotocin으로 유발된 당뇨쥐의 체중, 장기무게, 혈당, 혈중 중성 지방, 혈중 콜레스테롤, HDL-콜레스테롤에 미치는 영향에 대하여 조사하였다. 기능성 식품군에서는 당뇨군에 비하여 완만한 체중 감소를 나타내었으며 식이섭취량은 모든 당뇨군에서 현저한 증가를 나타내었다. 식이효율은 모든 당뇨군에서 낮은 수치를 나타내었으나 기능성 식품의 투여로 식이효율이 당뇨군에 비해 유의적인 증가를 나타내었다(p＜0.05). 장기의 중량 비교에서 간과 신장의 경우, 모든 당뇨군에서 정상군에 비하여 증가를 나타내었으며 기능성 식품의 투여로 다소 감소를 나타내었다. 심장과 비장의 무게는 모든 실험군에서 유의적인 차이를 나타내지 않았다(p＜0.05). 경구 당내성 검사에서는 당뇨군에서 50분대에 혈당치가 최고에 달하였다. 기능성 식품 투여군에서는 30분대에 최고치에 이르렀으며 120분 후에는 현저하게 감소되어 거의 공복전의 수준에 도달하였다. 혈중 포도당의 수치는 기능성 식품의 4주간 투여에 의해 당뇨군에 비하여 유의적인 감소를 나타내었다(p＜0.05). 혈청 중 총콜레스테롤, 중성지방, AI의 수치는 묘든 당뇨군에서 정상군에 비해 유의적으로 높은 수치를 나타내었다(p＜0.05). 기능성 식품 400 mg/kg을 투여한 투여군에서는 당뇨군에 비하여 각각 16.4%, 15.4% 그리고 48.3%의 감소를 나타내었으나 시료사이의 유의적인 차이는 인정되지 않았다(p＜0.05). HDL-콜레스테롤은 기능성 식품 투여에 의해 당뇨군에 비해 다소 증가를 나타내었으며, 400 mg/kg을 투여한 군에서는 정상의 수치에 근접하여 정상군과 유의적 차이가 인정되지 않아(p＜0.05) 발효콩을 주원료로 한 기능성 식품이 당뇨 흰쥐의 혈중 콜레스테롤 저하와 지질대사 개선효과가 있음을 알 수 있었다.

• 한국표면공학회:학술대회논문집
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• 한국표면공학회 2017년도 춘계학술대회 논문집
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• pp.78-78
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• 2017

Pure Titanium and alloy have been widely used in dental implants and orthopedics due to their excellent mechanical properties, biocompatibility and corrosion resistance. However, due to the biologically inactive nature of Ti metal implants, it cannot bind to the living bone immediately after transplantation into the body. In order to improve the bone bonding ability of titanium implants, many attempts have been made to alter the structure, composition and chemical properties of titanium surfaces, including the deposition of bioactive coatings. The PEO method has the advantages of short experiment time and low cost. These advantages have attracted attention recently. Recently, many metal ions such as silicon, magnesium, zinc, strontium, and manganese have received attention in this field due to their impact on bone regeneration. Silicon (Si) in particular has been found to be essential for normal bone and cartilage growth and development. Zinc (Zn) plays very important roles in bone formation and immune system regulation and promotes bone metabolism and growth. Manganese (Mn) is an essential trace metal found in all tissues and is required for normal amino acid, lipid, protein and carbohydrate metabolism. The objective of this work was research on the corrosion behavior of Si, Zn and Mn-doped hydroxyapatite on the PEO-treated surface. Anodized alloys was prepared at 270V~300V voltage in the solution containig Zn, Si, and Mn ions. Ion release test was carried out using potentidynamic and AC impedance method in 0.9% NaCl solution. The surface characteristics of PEO treated Ti-6Al-4V alloy were investigated using XRD, FE-SEM, AFM and EDS.

• 생명과학회지
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• 제10권4호
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• pp.388-396
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• 2000

The effect of the traditional herbal medicine Yukmijihwangtang-Jahage(YJ) on the improvement of insulin resistance and lipid profile was studied using a model for non-insulin dependent diabetes mellitus, lean (Fa/-) and obese (fa/fa) Zucker rats. Yukmijihwangtang-Jahage feeding for 4 weeks resulted in a significant decrease in the concentration of plasma triglyceride in both lean and obese Zucker rats. Furthermore, Yukmijihwangtang-Jahage markedly decreased both plasma cholesterol and fasting plasma insulin, and significantly decreased the postprandial glucose level at 30 min during oral glucose tolerance test in obese Zucker rats. Although there was no statistical significance, the crude glucose transporter 4 protein level of Yukmijihwangtang-Jahage dieted obese rats tended to increase when compared to that of obese control rats. Therefore, the present results suggested that Yukmijihwangtang-Jahage may be useful in prevention and improvement of metabolic disorders characterized by hyperinsulinemia states such as non-insulin dependent diabetes mellitus, syndrome X and coronary artery disease.

• Nutrition Research and Practice
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• 제18권1호
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• pp.46-61
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• 2024

BACKGROUND/OBJECTIVES: An increasing life expectancy in society has burdened healthcare systems substantially because of the rising prevalence of age-related metabolic diseases. This study compared the effects of animal protein hydrolysate (APH) and casein on metabolic diseases using aged mice. MATERIALS/METHODS: Eight-week-old and 50-week-old C57BL/6J mice were used as the non-aged (YC group) and aged controls (NC group), respectively. The aged mice were divided randomly into 3 groups (NC, low-APH [LP], and high-APH [HP] and fed each experimental diet for 12 weeks. In the LP and HP groups, casein in the AIN-93G diet was substituted with 16 kcal% and 24 kcal% APH, respectively. The mice were sacrificed when they were 63-week-old, and plasma and hepatic lipid, white adipose tissue weight, hepatic glucose, lipid, and antioxidant enzyme activities, immunohistochemistry staining, and mRNA expression related to the glucose metabolism on liver and muscle were analyzed. RESULTS: Supplementation of APH in aging mice resulted in a significant decrease in visceral fat (epididymal, perirenal, retroperitoneal, and mesenteric fat) compared to the negative control (NC) group. The intraperitoneal glucose tolerance test and area under the curve analysis revealed insulin resistance in the NC group, which was alleviated by APH supplementation. APH supplementation reduced hepatic gluconeogenesis and increased glucose utilization in the liver and muscle. Furthermore, APH supplementation improved hepatic steatosis by reducing the hepatic fatty acid and phosphatidate phosphatase activity while increasing the hepatic carnitine palmitoyltransferase activity. Furthermore, in the APH supplementation groups, the red blood cell (RBC) thiobarbituric acid reactive substances and hepatic H₂O₂ levels decreased, and the RBC glutathione, hepatic catalase, and glutathione peroxidase activities increased. CONCLUSIONS: APH supplementation reduced visceral fat accumulation and alleviated obesity-related metabolic diseases, including insulin resistance and hepatic steatosis, in aged mice. Therefore, high-quality animal protein APH that reduces the molecular weight and enhances the protein digestibility-corrected amino acid score has potential as a dietary supplement for healthy aging.

• Journal of Chest Surgery
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• 제27권1호
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• pp.48-51
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• 1994

Doing CABG in patient with renal transplantation requires special concern to keep and preserve renal function safely during and after operation. We experienced two cases of CABG for treatment of myocardial ischemia. who underwent renal transplantation 2 and 3 years ago respectively. The first patient received single reversed saphenous vein graft at LAD and second one received double saphenous vein graft at LAD and OMI. Peri & postoperative urinary volume and renal function test were comparable with preoperative status in both cases. Although abnormal lipid metabolism due to long term use of immunosuppressive regimen act a causative role in development and progression of coronary artherosclerosis in renal transplantation patient, CABG can be done safely with some precaution including maintenance of adequate mean blood pressure and blood level of immunosupressive regimen during cardiopulmonary bypass.

• Journal of Ginseng Research
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• 제13권1호
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• pp.30-36
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• 1989

1) 체중은 1,2주 실험군에서는 별 변화가 없었으나 4주 및 8주 실험군에서는 인삼죽 원료 첨가군이 대조군에 비교할 때 체중의 증가를 보였다. 2)각 식이군별 수영시간은 대조군, 5% 첨가군, 20% 첨가군 순으로 유의적 증가를 보였다. 3)혈중 hemoglobin 은 4주 및 8주 실험군에서 인삼죽 원료 첨가군이 대조군과 비교할 때 증가함을 보였다. 4)20% 첨가군은 대조군에 비교하여 serum total cholesterol의 감소, Triglyceride의 증가, 인지질의 감소(4주 실험군), total lipid의 감소(4주, 8주 실험군), LDL-cholesterol의 감소(1주, 4주 실험군)를 보였다.

• Nutrition Research and Practice
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• 제7권4호
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• pp.294-301
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• 2013

In this study, we examined the hepatic anti-steatosis activity of carnosic acid (CA), a phenolic compound of rosemary (Rosmarinus officinalis) leaves, as well as its possible mechanism of action, in a high-fat diet (HFD)-fed mice model. Mice were fed a HFD, or a HFD supplemented with 0.01% (w/w) CA or 0.02% (w/w) CA, for a period of 12 weeks, after which changes in body weight, blood lipid profiles, and fatty acid mechanism markers were evaluated. The 0.02% (w/w) CA diet resulted in a marked decline in steatosis grade, as well as in homeostasis model assessment of insulin resistance (HOMA-IR) index values, intraperitoneal glucose tolerance test (IGTT) results, body weight gain, liver weight, and blood lipid levels (P < 0.05). The expression level of hepatic lipogenic genes, such as sterol regulating element binding protein-1c (SREBP-1c), liver-fatty acid binding protein (L-FABP), stearoyl-CoA desaturase 1 (SCD1), and fatty acid synthase (FAS), was significantly lower in mice fed 0.01% (w/w) CA and 0.02% (w/w) CA diets than that in the HFD group; on the other hand, the expression level of ${\beta}$-oxidation-related genes, such as peroxisome proliferator-activated receptor ${\alpha}$ (PPAR-${\alpha}$), carnitine palmitoyltransferase 1 (CPT-1), and acyl-CoA oxidase (ACO), was higher in mice fed a 0.02% (w/w) CA diet, than that in the HFD group (P < 0.05). In addition, the hepatic content of palmitic acid (C16:0), palmitoleic acid (C16:1), and oleic acid (C18:1) was significantly lower in mice fed the 0.02% (w/w) CA diet than that in the HFD group (P < 0.05). These results suggest that orally administered CA suppressed HFD-induced hepatic steatosis and fatty liver-related metabolic disorders through decrease of de novo lipogenesis and fatty acid elongation and increase of fatty acid ${\beta}$-oxidation in mice.

• Nutrition Research and Practice
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• 제18권1호
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• pp.78-87
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• 2024

BACKGROUND/OBJECTIVES: The prevalence of obesity, a worldwide pandemic, has been increasing steadily in Korea. Reports have shown that increased intermuscular adipose tissue (IMAT) is associated with an increased risk of cardiovascular disease, independent of body mass index. However, the relationship between dietary intake and IMAT accumulation in the Korean population remains undetermined. The objective of this study was to evaluate regional fat compartments using advanced magnetic resonance imaging (MRI) techniques. We also aimed to investigate the association between IMAT amounts and dietary intake, including carbohydrate intake, among Korean individuals with obesity. SUBJECTS/METHODS: This cross-sectional study, performed at a medical center in South Korea, recruited 35 individuals with obesity (15 men and 20 women) and classified them into 2 groups according to sex. Anthropometry was performed, and body fat distribution was measured using MRI. Blood parameters, including glucose and lipid profiles, were analyzed using commercial kits. Linear regression analysis was used to test whether the IMAT was associated with daily carbohydrate intake. RESULTS: Carbohydrate intake was positively associated with IMAT in all individuals, with adjustments for age, sex, height, and weight. No significant differences in blood indicators were found between the sexes. CONCLUSIONS: Regardless of sex and age, higher carbohydrate intake was strongly correlated with greater IMAT accumulation. This suggests the need to better understand sex differences and high carbohydrate diet patterns in relation to the association between obesity and metabolic risk, which may help reduce obesity prevalence.

• 한국식품영양과학회지
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• 제21권6호
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• pp.617-626
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• 1992

n-3계 EPA와 DHA의 함유 비율이 높은 정어리유와 n-6계 linoleic acid의 함유비율이 높은 홍화유의 혼합급여가 고지질 식이 흰쥐의 혈청 및 간장의 지방산 대사에 미치는 영향을 구명하기 위해 Sprague Dawley계 숫 흰쥐에게 버터 식이를 대조군으로 하고 정어리유 및 홍화유의 혼합 비율을 달리한 유지를 급여하여 4주간 실험 사육한 후 혈청 및 간장의 지방산 조성을 분석 검토한 결과, 혈청 인지질, 중성지질 및 콜레스테롤 에스테르의 지방산 조성은 홍화유의 혼합 비율이 증가함에 따라 n-3계 지방산 및 EPA/AA 비율은 감소되는 반면, n-6계 지방산 및 AA/PUFA 비율은 증가되는 경향을 보였다. 간장 지질중 중성지질의 조성 지방산 중 DHA 함유 비율이 가장 높았고, 콜레스테롤 에스테르에서는 linoleic acid의 함유 비율이 높았다. 혈청 및 간장 지질의 지방산 조성은 시험유지의 지방산 조성에 영향을 받는 것으로 나타났다.