• Title/Summary/Keyword: Food restriction

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A study on the dietary treatments of atopic dermatitis (소아 아토피 피부염의 식이요법에 관한 연구)

  • Kim, Yun-Hee
    • Journal of Haehwa Medicine
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    • v.14 no.1
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    • pp.1-4
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    • 2005
  • Objectives : The aim of this study was the collection of dietary treatments of atopic dermatitis Methods : We surveyed the western and oriental medical book concernig the atopic dermatitis. Results : The 20~30% of patients with atopic dermatitis have hypersensitivity reaction on the major food antigen. The food restriction to prevent allergy reaction need to take effect early during infancy and childhood. In oriental medicine, a heat-poison(熱毒) caused by food affects a fetus of pregnancy. So the food, the regimen and the harmony of the five tastes is stressed the need. When certain foods are restricted to prevent allergy reaction, infant and children with food related Atopic Dermatitis need extra dietary efforts to maintain optimal nutrition as they are in the growth period.

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Effects of Dietary Caloric Restriction and Exercise on GLUT 2 in Liver and GLUT-4 and VAMP-2 in Muscle Tissue of Diabetic Rats

  • Jeong, Ilgyu;Oh, Myungjin;Jang, Moonnyeo;Koh, Yunsuk;Biggerstaff, Kyle D.;Nichols, David;Ben-Ezra, Vic
    • Korean Journal of Exercise Nutrition
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    • v.13 no.1
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    • pp.1-7
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    • 2009
  • It has been shown that both caloric restriction and exercise, enhances glucose uptake through translocation of GLUT-4 protein. It remains unclear how exercise and caloric restriction affect the changes in VAMP (vesicle-associated membrane protein) in skeletal muscle and GLUT-2 in liver. This study investigated the effects of exercise training and caloric restriction on the expressions of glucose transport relating proteins in muscle and liver tissues in diabetic rats. Forty male Sprague-Dawley rats (250±10 g; 8 week in age) were assigned equally to four different groups; control (C), exercise only (E), dietary restriction only (D) and dietary restriction and exercise (DE). Daily food consumption was monitored to establish baseline intake. Both C and E groups consumed baseline food intake while D and DE groups were provided with only 60% of baseline total food intake. Forty-eight hours after intraperitoneal injection of STZ (50 mg/kg), diabetes was confirmed (8-hr fasting blood glucose levels ≥300 mg/dl). Rats in the E and DE groups exercised on a motorized treadmill for 30 min/d, 5 days/week for 4 weeks (5 min running at 3 m/min, 0% grade; 8 m/min for the next 5min, and then 15 m/min for 20 min). Rats were sacrificed 48 hrs after the last bout of exercise. Soleus muscle and liver were extracted to analyze for GLUT-4, VAMP-2, and GLUT-2, respectively. All variables were analyzed using the Western Blotting technique. All values were expressed as optical volume measured by optical density. A Two-way ANOVA was used to examine the difference between groups and applied Duncan's test for post-hoc. No significant differences in GLUT-2 expression were found among groups. However, E (280133±13228 arbitrary units{AU}) and DE (268833±14424 AU) groups showed significantly higher (p<.001) levels of GLUT-4 as compared with C (34461±2099 AU) and D groups (27847±703 AU). VAMP-2 protein expression increased (p<.001) in E (184137±7803 AU) and DE (189800±10856 AU) groups as compared to C (74201±8296AU) and D (72967±863 AU) groups. These results suggest that either exercise with or without caloric restriction increases the up-regulation of GLUT-4 and VAMP-2 in skeletal muscle of diabetic rats. However, GLUT-2 protein in liver was not affected by either exercise or exercise with caloric restriction.

Longevity through diet restriction and immunity

  • Jeong-Hoon Hahm;Hyo-Deok Seo;Chang Hwa Jung;Jiyun Ahn
    • BMB Reports
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    • v.56 no.10
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    • pp.537-544
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    • 2023
  • The share of the population that is aging is growing rapidly. In an aging society, technologies and interventions that delay the aging process are of great interest. Dietary restriction (DR) is the most reproducible and effective nutritional intervention tested to date for delaying the aging process and prolonging the health span in animal models. Preventive effects of DR on age-related diseases have also been reported in human. In addition, highly conserved signaling pathways from small animal models to human mediate the effects of DR. Recent evidence has shown that the immune system is closely related to the effects of DR, and functions as a major mechanism of DR in healthy aging. This review discusses the effects of DR in delaying aging and preventing age-related diseases in animal, including human, and introduces the molecular mechanisms that mediate these effects. In addition, it reports scientific findings on the relationship between the immune system and DR-induced longevity. The review highlights the role of immunity as a potential mediator of the effects of DR on longevity, and provides insights into healthy aging in human.

A Study on the Food and Drink Restriction in Public Libraries (공공도서관 음식물 반입제한에 대한 인식조사 연구)

  • Yoon, Hee-Yoon
    • Journal of Korean Library and Information Science Society
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    • v.49 no.3
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    • pp.33-53
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    • 2018
  • Many public libraries have restricted or forbidden most food and drink on the basis of a number of reasons, and it is necessary to demonstrate that it is legitimate or unfair. To this purpose, the researchers surveyed 485 public library users residing in Daegu City on the perception of food and drink policy. Based on survey results, the researcher suggested improvement directions from various perspectives. First, public library should proactive review the restriction policy in terms of social paradigm. Second, allowing food and drink is a strategy and a right way to justify the existing value and social role of public libraries and strengthen the ecosystem in terms of guaranteeing basic rights of users. Third, it is desirable to emphasize the pure function rather than the dysfunction due to food and drink allowance in terms of facilitating the collection and space use. Fourth, the totalitarian thinking that restrict all or most food and drink in the bylaws or library regulations should be avoided. Finally, public library should allow all food and drink, but it is necessary to prescribe a kind of the food which can be consumed by space, and actively promote to the user.

Circular Plasmid DNA from a Red Algae, Porphyra tenera (양식 참김(Porphyra tenera)에서 분리한 Circular Plasmid DNA)

  • 류태형;최학선;최경희;이춘환
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.27 no.6
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    • pp.1160-1165
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    • 1998
  • When total cellular DNA was isolated from Porphyra tenera by ultracentrifugation on Hoechst dye/CsCl gradients method, plasmid like DNA's were concentrated at the upper band which were characterized with a A+T rich organelle DNA's in the CsCl gradients. Based on their electrophoretic migration in different concentration of agarose gel, buffer system, and electric power etc. and the results of restriction digestion, the plasmid like DNA's were concluded to have circular conformation. This is the first report of putative circular plasmid DNA from the P. tenera, which is a autonomously replicating plasmid existing with a high copy number plasmid in the cell. The minimum size of this plasmid estimated by restriction endonuclease digestion was appeared to be 2.5kb in size.

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Effects of age on changes of body composition through caloric restriction in overweight and obese women (과체중 및 비만여성에서 연령이 열량 제한에 의한 체조성 변화에 미치는 영향)

  • Yim, Jung-Eun;Kim, Young-Seol;Choue, Ryowon
    • Journal of Nutrition and Health
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    • v.46 no.5
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    • pp.410-417
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    • 2013
  • Caloric restriction is recognized as one of the best treatment options for obesity, and is associated with changes in body composition. The purpose of this study was to determine the influence of age in caloric restriction in overweight and obese women. In this caloric restriction study, nutrient intake of 61 women was evaluated using food records written by subjects for three days. Body composition and metabolic risk factors were assessed before and after caloric restriction. Blood levels of lipids, glucose, leptin, and adiponectin were measured. Visceral fat and subcutaneous fat were evaluated using bioimpedance analysis. General linear models (GLM) identified the independent effects of age after co-varying baseline weight and difference of energy intake. Weight, fat mass, visceral fat, subcutaneous fat, and blood pressure showed a significant decrease by caloric restriction of 452 kcal/day. The percent changes in weight, visceral fat, and subcutaneous fat were -4.5%, -12.0%, and -8.2%, respectively, after caloric restriction. The percent changes of weight, visceral fat, and subcutaneous fat showed an independent association with age co-varying baseline weight and difference of energy intake. Decreased change in percent of leptin by caloric restriction also showed an association with age. Changes in body composition and leptin by caloric restriction showed an independent association with age. This may indicate greater difficulty in achievement of change of body composition as well as greater obesity-related metabolic risk with aging. Therefore, caloric restriction considering age should be recommended for effective dietary treatment in overweight or obese women.

Restriction Mapping of Cloned Pullulanase Gene and Property of Pullulanase Produced in Escherichia coli (pYKL451) and Klebsiella pneumoniae NFB-320 (Klebsiella pneumoniae NFB-320의 Pullulanase 유전자의 제한효소 분석과 효소학적 특성)

  • Yu, Ju-Hyun;Chung, Kun-Sub;Kong, In-Su;Lee, Jung-Kee
    • Microbiology and Biotechnology Letters
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    • v.15 no.6
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    • pp.436-440
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    • 1987
  • Pullulanase gene (pul) of Klebsiella pneumoniae NFB-320 which was cloned previously in Escherichia coli with plasmid pBR322. The gene was analyzed with various restriction enzymes. The cloned gene was contained within n 10 kb BamHI DNA fragment. We constructed the restriction map of the hybrid plasmid pYKL451. The optimum temperatures for pullulanases produced in E. coli (pYKL451) and K. pneumoniae NFB-320 were almost the same, 50-55 $^{\circ}C$. The optimum pHs for the reaction of the enzymes produced by E. coli (pYKL451) and K. pneumoniae NFB-320 was 6.0. Both enzyme preparations were stable under the range of pH 5.0 to 10.0 when those were kept at 40 $^{\circ}C$ for 90 min and were stable until 40 $^{\circ}C$ when allowed to stand for 1hr at various temperatures.

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Effects of Calorie Restriction on Microsomal Mixed Function Oxidase System and Free Radical in Kidney of SAMP8 Mice

  • kim, Hyun-Jeong;Choi, Jin-Ho;Rhee, Soon-Jae
    • Nutritional Sciences
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    • v.7 no.4
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    • pp.189-195
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    • 2004
  • 1bis study investigated the antioxidative effect in kidney of senescence-accelerated prone SAMP8 mice with calorie restriction. 4-weeks-old SAMP8 female mice were divided into 4 groups according to the experimental feeding period: for 4, 8, 12 month, and at natural death. Each group was subdivided into 2 groups, with thirteen mice each one, as ad libitum group and as dietary restriction group (60% of ad libitum feeding amount). After feeding for a given period, the mice were sacrificed to get the following results: among the experimental groups, there wereno significant differences in xanthine oxidase (XOD) activity in their kidney tissues. The contents of cytochrome $P_{450}$ decreased in ad libitum group and dietary restriction group by age. The activity of NADPH-cytochrome $P_{450}$ reductase showed a trend similar to cytochrome $P_{450}$. Superoxide radical content increased with age. At the 4th, 8th and 12 months of the experimental period, the activity in the dietary restriction group was less than that of ad libitum group by as much as 17% 14% and 14% respectively. For hydrogen peroxide, the contents were increased in the ad libitum group with age, while no correlation between content and age was observed in the dietary restriction group. In the 8th and 12th months of the experimental period, the were in the dietary restriction group less than that of ad libitum group counterpart as much as 17% and 20o/c, respectively. For the cellular membrane stability of the kidney, no significant correlation with age was observed in either the dietary restriction group or the ad libitum group. However at the 12th month of the experiment, however, the stability in the dietary restriction group was 11 % higher than that in the ad libitum group. In conclusion, with these results obtained from the SAMP8 mouse model, we demonstrate that dietary restriction has the effects of anti-oxidation and anti-senescence in the kidney.

The Change of Electrolytes Composition in Skeletal Muscles by Protein Restriction and Rehabilitation (단백질의 제한과 회복으로 인한 골격 근육내의 성분변화)

  • Kim, Jee-Hyun;Kim, Sook-He
    • Journal of Nutrition and Health
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    • v.14 no.4
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    • pp.151-161
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    • 1981
  • The objective of this study was to compare the electrolytes contents in skeletal muscles of two different groups of rats, one for control fed 20% casein diet, and the other experimental group recovered from 7% casein diet as protein restriction feeding for two weeks at the beginning of this experiment. Two different comparison criteria were used in this study, one for comparison between animals at the same age groups and the other between groups weighing same body weight as the control groups. Food consumption of animals for experimental and control groups were ad libitum. Following measurement and samples were collected: body weight, five different muscles-anterior tibialis (A.T.) extensor digitorium longus (E.D.L.) soleus, plantaris, gastrocnemius-for electrolytes and protein analysis. The experimental groups showed lower body weight than that of control group. Same trend was showen in protein content in five different muscles. Magnesium and potassium content in four muscles except gastrocnemius showed lower and sodium higher in experimental groups than those in control group at fourteenth day, after recovery from protein restriction, electrolytes content change showed differently in four muscles. Magnesium and potassium contents were increased as protein content in diet. Sodium content decreased as one week intake of recovery diet started, thereafter it was rather slowly increased. Phosphorus content in gastrocnemius at the second week in experimental group was slightly lower than that of control group, and it recovered rapider while at the same body weight group it was higher in experimental group.

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