• Journal of Nutrition and Health
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• 제39권4호
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• pp.381-391
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• 2006

This study is performed to compare the dietary intakes and food sources of copper (Cu) using the database of Cu content developed in this study between the elementary schoolchildren in remote rural areas (RA, n=58, $9.9{\pm}1.7$ yrs) and those in urban area (UA, n=60, $9.4{\pm}1.8$ yrs), and to analyze the relationship between serum Cu concentration and serum antioxidant status in the RA. The results obtained in this study were as followings: 1) Dietary intakes of calorie, calcium and iron in the RA were in the 3/5-4/5 of the Korean RDA while the UA were similar to or more than the Korean RDA, 7th ed. except iron. 2) More than 273 kinds of food consumed by the subjects were analyzed the content of Cu and database of Cu content were developed in the present study. The mean dietary intake of Cu per day in the RA was $0.99{\pm}0.07mg/d$ ($170.0{\pm}13.2%$ of the USA RDA) while it was $1.22{\pm}0.07mg/d$ ($203.4{\pm}13.1%$ of the RDA) in the UA. The percentage of dietary intakes of Cu less than 213 of the RDA was 8.6% in the RA in comparison to 0% in the UA. 3) The RA and the UA consumed more than 80% of total dietary intakes of Cu from plant foods. Thus, the RA and the UA consumed Cu from cooked rice, vegetables and fruits as a major source. However the RA had less Cu from meat and their products than did the UA (p<0.05) .4) Crab stew including crab and juice was the highest food source of Cu for the total subjects, followed by seasoned bud of aralia, cooked; beef rib meat, roasted; soybean paste soup w/mallow; and soybean paste soup w/mallow & beef. Major food source of Cu was similar for the RA and the UA such as cooked rice, vegetables and fruits. 5) Mean concentration of serum Cu in the RA was $18.1{\pm}0.7{\mu}M/L$ that was in the normal value, and all subjects in this group were in more than normal value. In the RA serum Cu concentration related positively with serum ceruloplasmin concentration, serum vitamin C concentration and EC SOD activity, respectively. However, serum Cu concentration did not relate with serum TBARS concentration in the RA. Above results showed that the RA had good status of Cu nutrition based upon dietary intake and serum concentration, however some of the RA had lower intake of Cu than the RDA. The overall children in the UA had good Cu nutrition. Therefore, the subgroup of the RA should be supported to improve their Cu nutrition, and this support could give them better antioxidant status based upon positive relationship between serum Cu concentration and serum antioxidant status in the RA.

• 대한지역사회영양학회지
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• 제19권1호
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• pp.12-26
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• 2014

The purpose of this study was to investigate the relationships among serum adiponectin, leptin and vitamin D concentrations and the metabolic syndrome in Korean farmers. 105 (26 males, 79 females) farmers (39~78 years, mean age $59.4{\pm}9.6$ years) in Gangwon - area were included in this study. Anthropometric measurements and biochemical blood analysis of subjects were carried out. The prevalence of obesity, abdominal obesity, hypertension, diabetes, hypertriglyceridemia, hypercholesterolemia and hyper LDL-cholesterolemia, metabolic syndrome were 51.9%, 65.7%, 49.5%, 15.3%, 17.3%, 13.5%, 11.5% and 40.9%, respectively. Serum adiponectin and leptin levels ($8.90{\mu}g/ml$ and 12.6 ng/ml) of females were significantly higher than those ($6.49{\mu}g/ml$ and 4.88 ng/ml) of males. But there was no significant difference in 25(OH)vitamin D concentration between males (15.4 ng/ml) and females (16.9 ng/ml). In the subjects with metabolic syndrome, the adiponectin levels were significantly lower and leptin levels were significantly higher than those of the subjects without metabolic syndrome. Serum adiponectin level had positive correlations with HDL-cholesterol level (r = 0.325, p < 0.001), but showed negative correlations with triglyceride and fasting blood glucose concentrations, body weight and waist/hip circumference ratio (r = -0.202 ~ -0.317, p < 0.05). Serum leptin and 25(OH)vitamin D concentrations were positively correlated with body fat (kg, %) and BMI, waist and hip circumferences (r = 0.244 ~ 0.682, p < 0.001). The results of this study suggested that adiponectin and leptin levels could be credible indices to predict chronic diseases in farmers. However, further research on vitamin D should be carried out considering another factors.

• Journal of Nutrition and Health
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• 제52권6호
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• pp.552-558
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• 2019

본 연구는 2008 ~ 2014년까지 수행된 국민건강영양조사 자료를 활용하였다. 본 분석 대상자는 12 ~ 29세 여자 청소년 및 젊은 여성이며, 이들을 대상으로 비타민 D 결핍 여부에 따른 빈혈 및 철 결핍성 빈혈과의 연관성 분석을 실시하였다. 그 결과, 교란인자를 보정한 다중 로지스틱 회귀분석 모델에서 비타민 D 결핍군이 충분군보다 빈혈 및 철 결핍성 빈혈의 유병률이 유의적으로 높았다. 또한 혈청 25(OH)D 농도가 증가함에 따라 빈혈 및 철 결핍성 빈혈의 유병률이 낮아지는 선형 관계가 나타났다. 본 연구의 결과는 청소년 및 젊은 여성에서 문제가 되고 있는 비타민 D 결핍과 빈혈에 대한 예방 및 관리에 기초자료를 제공할 수 있다고 기대된다. 추후 전향적인 코호트 연구 및 임상시험 연구 설계를 이용한 후속 연구를 수행하여 비타민 D와 빈혈 사이의 명확한 인과관계를 확인할 필요가 있다고 사료된다.

• Journal of Nutrition and Health
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• 제52권5호
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• pp.465-474
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• 2019

본 연구는 한국 농촌 지역에 거주하는 60세 이상 노인 393명을 대상으로 혈청 비타민 D 상태와 영양소 섭취량을 파악하고, 비타민 D와 인지기능 사이의 상관성을 밝혔다. 미국 IOM의 비타민 D 진단 기준에 따라 대상자는 결핍군 26명 (6.6%), 부족군 175명 (44.5%), 충분군 192명 (48.9%)으로 분류되었다. 인구사회학적 특징을 세 군에 따라 분석한 결과, 충분군에서 남성과 음주자 비율, 실외직 비율, 키, 체중이 가장 높았다. 모든 영양소 섭취량에서는 유의적인 차이가 없었다. 인지기능을 평가하는 MMSE-KC의 총 점수는 충분군일수록 높았으며, 부분별로 지남력, 기억 등록, 집중력, 구성능력에서 충분군의 점수가 가장 높았으나 유의적인 차이는 없었다. 인지기능 저하 비율은 결핍군 53.8%, 부족군 38.3%, 충분군 31.9%로 혈청 비타민 D 농도가 높을수록 낮아졌으며, 유의미한 상관성이 있었다. 비타민 D 결핍군일수록 인지기능 저하의 위험도가 높아졌으나, 통계적으로 유의적인 차이는 없었다. 이 결과를 토대로 혈청 비타민 D 농도가 인지기능 저하와 관련이 있음을 확인할 수 있었다. 노인들은 노화로 인해 피부의 합성능력이 저하되어 비타민 D가 결핍되기 쉬우므로 인지기능 저하 및 치매의 예방을 위해 육류, 생선, 버섯 및 유제품등의 비타민 D 급원 식품이나 보충제 섭취가 필요하다고 생각된다. 상기 연구를 바탕으로 후속 연구는 비타민 D와 인지기능 사이의 인과관계를 밝힐 수 있는 코호트나 임상 연구가 요구된다.

• 대한지역사회영양학회지
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• 제5권2호
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• pp.201-207
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• 2000

This study was performed to assess the nutritional status of nursing home residents and to assess the effect of nutrition intervention. The subjects were 123 people aged over 60 years from 5 different nursing homes. The nutrition intervention study was carried out by supplementing their diet with multivitamin-minerals for 2 months. The mean intakes of most nutrients did not meet the RDA, Though the nutrient content of the menus provided by the facilities were satisfactory. Nutrients of which intakes fell below 75% of the RDA were protein, Ca, Fe, vitamin A vitamin B$_1$, and vitamin B$_2$. The BMIs of male and female subjects were 22.0kg/$m^2$ and 24.6kg/$m^2$ and the WHRs were 0.92 and 0.90, respectively. The percentage of subjects with hypertention (BP$\geq$140/90mmHg) and with anemia(Hb$\leq$13mg/100$m\ell$ in men, Hb$\leq$12mg/100$m\ell$ in women) were 34.6% and 41.9%, respectively. The serum cncentrations of albumin, total protein, triglyceride, total cholesterol, HDL-cholesterol, and total lipid fell within normal ranges. However, 27.5% of the subjects showed a high serum cholesterol level of over 250mg/100$m\ell$. The concentration of C3 was 81.2mg/100$m\ell$, IgG, 1343mg/100$m\ell$, and IL-2, 0.766mg/$m\ell$. after 2 months of vitamin-mineral supplementation, the levels of blood glucose and total cholesterol were significantly decreased and triglyceride was significantly increased. The vitamin-mineral supplementation had no effect on the mean levels of vitamin A and E, IgG, IL2, and C3. However, the intervention resulted int he improvement of serum vitamin A and E levels when the subject\`s serum levels were low before the supplementation.

• Journal of Nutrition and Health
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• 제30권8호
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• pp.1009-1017
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• 1997

This study was designed to assess the iron nutritional status and growth development of children provided with and without the national school -lunch program(NLSP). The subjects consisted of 590 elementary school children (313 boys, 277 girls) in the 2nd, 4th and 6th grades provided with (n=390) and without (n=200) NSLP. anthropometric measurements were taken for body weight, height, triceps skinfold thickness and body fat percentage. Nutrient intakes were assessed by a modified 24 -hour recall method. Fastinig blood samples were obtained and analyzed for hemoglobin concentration, hematocrit, serum iron and total iron binding capacity. The results obtained are summarized as follows. No significant differences between children provided with and without NSLP were found in height and body weight, but triceps skinfold thickness and body fat(%) were significantly higher in children without NSLP than in those with NSLP. There was no significant difference in hemoglobin concentration and hematocrit between children provided with and without NSLP. However, serum iron concentration and transferrin saturation were higher in the children provided with NSLP(81.9$\mu\textrm{g}$/dl and 22.8%) than in the children without NSLP(73.1$\mu\textrm{g}$/dl and 20.9%). When comparing iron and vitamin C intakes , iron intake was significantly higher in children provided with school-lunch, but vitamin C intake was significantly higher in children provided without school-lunch. Percentages of iron -deficient anemia in underweight, normal and obese children when judged by total iron binding capacity were 14.9%, 12.5% and 25.8% respectively.

• Journal of Nutrition and Health
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• 제28권8호
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• pp.771-781
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• 1995

The present study was aimed to examine various factors related to serum total cholesterol, triglyceride, atherogenic index, lipoperoxides and vitamin E in 174 middle-aged men residing in Taegu. Body mass index was positively correlated with serum triglyceride, and waist-hip circumference ratio was positively correlated with serum total cholesterol, triglyceride, atherogenic index and vitamin E concentration. Total cholesterol, triglyceride and atherogenic index of the subjects who smoked more than 20 cigarettes per day were significantly higher than those with smoking less or non-smokers. drinking alcohol more than 5 times per week showed higher atherogenic index than drinking less frequently of non-drinking. Subjects doing exercise had higher HDL-cholesterol level than those with no exercise. The intakes of all nutrients were above 90% of RDA and the subjects with good food habit had lower of total cholesterol, triglyceride, atherogenic index and lipoperoxides. The study indicates that avoiding heavy smoking and drinking as well as obesity and keeping regular exercise, good food habit and diversity of foods will reduce risk of cardiovascular diseases in middle-aged men.

• 대한수의학회지
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• 제27권1호
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• pp.117-126
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• 1987

The effect of selenium and vitamin E on the incidence of retained fetal membranes(RFM) was evaluated in dairy cows raised in Kyonggi-do province from July through September 1985. Sodium selenite(0.1mg/kg of body weight) and vitamin E (1,000 IU) were simultaneously injected 21 days prior to the expected calving day to Holstein cows and the incidence in the treated group was compared with that in the non-treated control group. Serum levels of selenium, vitamin E, calcium, inorganic phosphorus and magnesium were also determined in the treated and the non-treated groups to compare the status of vitamin E and other minerals during periparturient period in the cows with RFM and the normal ones. The incidence of RFM was 34.5% in cows of the non-treated group (29 heads), whereas it was significantly reduced to 9.7% in cows of the treated group (31 heads) (p<0.05). Data for serum mineral concentrations showed that the prepartal inorganic phosphorus concentration was significantly lower in the RFM than in the not-retained group(p<0.01). As a result, the prepartal Ca/P ratio was significantly higher in the RFM group(p<0.01). It appears that a single injection of 0.1mg of sodium selenite per kg body weight and 1,000 IU of vitamin E 21 days prior to the expected calving day is an effective prophylactic for prevention of RFM, and that RFM may be related to imbalances in calcium and phosphorus metabolism.

• Nutrition Research and Practice
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• 제5권5호
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• pp.396-403
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• 2011

Ceramides (Cer) comprise the major constituent of sphingolipids in the epidermis and are known to play diverse roles in the outermost layers of the skin including water retention and provision of a physical barrier. In addition, they can be hydrolyzed into free sphingoid bases such as $C_{18}$ sphingosine (SO) and $C_{18}$ sphinganine (SA) or can be further metabolized to $C_{18}$ So-1-phosphate (S1P) and $C_{18}$ Sa-1-phosphate (Sa1P) in keratinocytes. The significance of ceramide metabolites emerged from studies reporting altered levels of SO and SA in skin disorders and the role of S1P and Sa1P as signaling lipids. However, the overall metabolism of sphingoid bases and their phosphates during keratinocyte differentiation remains not fully understood. Therefore, in this study, we analyzed these Cer metabolites in the process of keratinocyte differentiation. Three distinct keratinocyte differentiation stages were prepared using 0.07 mM calcium (Ca$^{2+}$) (proliferation stage), 1.2 mM Ca$^{2+}$ (early differentiation stage) in serum-free medium, or serum-containing medium with vitamin C (50 ${\mu}L$/mL) (late differentiation stage). Serum-containing medium was also used to determine whether vitamin C increases the concentrations of sphingoid bases and their phosphates. The production of sphingoid bases and their phosphates after hydrolysis by alkaline phosphatase was determined using high-performance liquid chromatography. Compared to cells treated with 0.07 mM Ca$^{2+}$, levels of SO, SA, S1P, and SA1P were not altered after treatment with 1.2 mM Ca$^{2+}$. However, in keratinocytes cultured in serum-containing medium with vitamin C, levels of SO, SA, S1P, and SA1P were dramatically higher than those in 0.07- and l.2-mM Ca$^{2+}$-treated cells; however, compared to serum-containing medium alone, vitamin C did not significantly enhance their production. Taken together, we demonstrate that late differentiation induced by vitamin C and serum was accompanied by dramatic increases in the concentration of sphingoid bases and their phosphates, although vitamin C alone had no effect on their production.

• Journal of Animal Science and Technology
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• 제61권5호
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• pp.294-303
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• 2019

This study was performed to evaluate the effects of dietary vitamin levels on physiological responses, blood profiles, and reproductive performance in gestating sows. A total of 52 F1 multiparous sows ($Yorkshire{\times}Landrace$) with an average body weight of $223.5{\pm}31.7kg$, an average parity of $6.4{\pm}2.7$, and an average backfat thickness of $18.5{\pm}4.9mm$ were divided into four treatment groups considering body weight, backfat thickness, and parity in a completely randomized design with 13 replicates. The treatments were 100% (V1), 300% (V3), 600% (V6) and 900% (V9) of the National Research Council (NRC) Nutrient Requirements of Swine. The gestation diet was formulated based on corn-soybean meal (SBM) and contained 3,265 kcal of metabolizable energy (ME)/kg and 12.00% crude protein. During the lactation period, all sows were fed the same commercial lactation diet. There was no significant difference in body weight of gestating sows. However backfat thickness tended to increase when higher levels of vitamins were provided to gestating sows (p < 0.10). When high levels of dietary vitamins were provided, the body weight change of lactating sows increased (p < 0.01). When sows were fed higher levels of vitamins, the feed intake of lactating sows tended to decrease (p = 0.06). There were no treatment differences in the number of total born, born alive, stillbirth piglets, or the body weight of piglets according to different dietary vitamin level. As dietary vitamin level increased, the serum concentration of $25(OH)D_3$ in sows at 90 days of gestation linearly increased (p < 0.01). Furthermore, the serum vitamin E level of gestating sows was linearly increased with increasing dietary vitamin level (p < 0.05). The current NRC vitamin requirements are sufficient for gestating sows and higher levels of vitamins in the gestation diet did not show any beneficial effects for gestating and lactating sows.