간 역동적 CT(Liver Dynamic Computed Tomography; LDCT) 검사에서 일반적으로 사용하는 프로토콜과 관전압을 낮게 설정한 후 프로토콜을 변화시켰을 때 방사선량과 영상의 질을 비교하여 영상의 질을 유지하면서 방사선량을 감소시킬 수 있는 방안을 알아보고자 하였다. LDCT를 시행한 환자 중 신체질량지수(body mass index; BMI)가 18.5~24인 환자 40명을 대상으로 일반적인 복부 CT 검사 프로토콜을 적용한 A그룹 20명(관전압: 120 kVp, SAFIRE strength1)과 관전압을 낮게 설정한 B그룹 20명(관전압: 100 kVp, SAFIRE strength 0~5 적용)이었다. 영상의 질 평가는 동맥기의 간 실질 조직, 대동맥, 상장간막동맥, 복강동맥, 내장지방 그리고 백그라운드에 관심영역(region of interest; ROI)을 설정해 잡음(noise), 신호대 잡음비(signal to noise ratio; SNR), 대조도 대 잡음비(contrast to noise ratio; CNR), CT number를 측정 비교하였다. 또한 정성적 평가는 경험이 풍부한 영상의학과 전문의 2명이 0~3점까지로 평가하였다. 방사선량은 총 DLP(dose length product)와 유효선량, CTDIvol(volume computed tomography dose index)을 비교하였다. 관전압 100 kVp에서 SAFIRE가 높을수록 잡음은 감소하고, CT number는 증가하였다. 따라서 SNR과 CNR은 SAFIRE 단계가 높을수록 증가하였다. 관전압 120 kVp와 비교하여 잡음, SNR, CNR이 SAFIRE strength 2, 3에서 가장 유사하였다. 정성적 평가는 SAFIRE strength 2가 가장 많았고 관전압이 100 kVp일 때 영상의 질이 더 좋다고 평가한 경우는 SAFIRE 1이었다. 방사선량은 120 kVp에 비해 100 kVp에서 21.69% 감소하였다. BMI가 비교적 높지 않은 LDCT 검사의 경우 공장에서 출고될 당시에 관전압이 높게 설정되어 있어 불필요한 방사선피폭이 우려되고 있는 현실을 고려하면, 본 연구 결과에 따라 관전압을 낮게 설정하고 SAFIRE strength를 2로 조정하면 영상의 질 저하 없이 방사선량도 감소시킬 수 있을 것으로 사료된다.
A cross-sectional survey was conducted among 730 participants from 4 rural districts of Nakhon Ratchasima province, Thailand, with a reported high incidence of liver fluke infection. This study was aimed to examine and evaluate the nutritional status in relation to Opisthorchis viverrini infection. Participants were purposive selected from Chum Phuang, Mueang Yang, Bua Yai, and Kaeng Sanam Nang districts. Stool samples were prepared by Kato Katz technique and then assessed by microscopy. Anthropometry was evaluated according to the body mass index from weight and height. Descriptive statistics and Spearman rank correlation coefficients were used to evaluate the association between the nutritional status and O. viverrini infection. Of 1.64% infected with O. viverrini the highest proportions were found in age groups ${\geq}61$ and 41-50 years old, Mueang Yang district. The majorities of participants had normal weight (32.2%), followed by class II obesity (28.1 %), class I obesity (21.8%), underweight (10.3%), and class III obesity (8.63%). Nutritional status with class II obesity (rS=0.639, p<0.01) and class I obesity (rS=0.582, p<0.05), had moderately statistical significant correlations with O. viverrini infection. Meanwhile, normal weight (rS=0.437, p<0.05) and class III obesity (rS=0.384, p<0.05) demonstrated lower statistical significance. These findings raise the possibility that infection with O. viverrini may contribute to fat deposition and thereby have long-term consequences on human health. Further studies are needed to better understand whether O. viverrini contributes directly to fat deposition and possible mechanisms.
For the rapidly growing elderly population, the achievement and maintenance of good nutritional status is critical to health, functioning and quality of life. Elderly women living alone have been identified as a group associated with poor nutrition. The purpose of this study was to assess dietary intakes of elderly women living alone as compared to those of elderly women living with family in a rural area and to examine seasonal variation. The subjects are 49 elderly women living alone and 41 elderly women living with family who reside in Goryeong-gun, Gyeongbuk, and their food intakes were assessed once each time in summer 2005, winter 2005-2006, and spring 2006. The average ages were 74.7 years for living alone and 72.8 years for living with family. Education level was not different between the two groups. Height, weight, body mass index, systolic and diastolic blood pressures, and fasting blood glucose were not significantly different between the two groups. Average intakes of major nutrients, nutrient adequacy ratio, mean adequacy ratio and index of nutritional quality were lower in the elderly women living alone compared with the elderly women living with family in summer, but the differences in intakes of most nutrients became insignificant both in winter and in spring. High carbohydrate and low fat diet was prevalent and intakes of carbohydrate and fat in summer deviated from macronutrient acceptable distribution ranges. Percentages of the subjects who consumed energy less than 75% of the estimated energy requirement and nutrients less than the estimated average requirement were higher than those reported by the Third National Health and Nutrition Examination Survey. In summer, the percentage of the subjects who consumed energy less than both 75% of the estimated energy requirement and 4 nutrients less than estimated average requirements was 58.5% of the elderly women living alone, which was higher than 26.5% of the elderly women living with family and that of National Nutrition Survey. Therefore, nutrition policies including nutrition education and support are necessary to improve nutritional status of elderly, especially elderly women living alone and should reflect regional and seasonal characteristics.
Objectives : It is known that the prevalence of diabetes mellitus(DM) appears to be rapidly increasing in recent times in Korea, presumably due to a westernized diet and change of life style followed by rapid economic growth. Based on the Seoul male cohort which was constructed in 1993, this study was conducted to estimate the annual incidence rates of DM through 4 years' follow up and to determine which factors are associated with DM risk in Korean middle-aged men. Methods : Among 14,533 men recruited at baseline, 559 were excluded because they reported a history of diabetes or were found to be diabetes at 1992 routine health examination. During 4 years' follow-up, 237 incident DM cases were ascertained through chart reviews and telephone contacts for those who have ever visited hospitals or clinics under suspicion of DM during 1993-1996 and the biennial routine health examinations in 1994 and 1996. Results : In this study the annual incidence of DM among the study population was estimated to be 0.5 per 100. This study showed that fasting glucose level at initial baseline examination was a powerful predictor of risk for diabetes several years later(fasting blood glucose of $\geq$ 110 mg/dl compared with $\leq$ 80 mg/dl, Hazard Ratio[HR]:15.6, 95% Confidence interval[CI]=9.1-26.6) after considering potential covariates such as age, family history, smoking and alcohol history, body mass index, physical activity, total energy intake, and total fiber intake. Adjusted hazard ratios of family history of diabetes was 1.95(95% CI=1.38-2.75); of obesity as measured by BMI(BMI $\geq$ 25.3 compared with $\leq$ 21.3) was 7.19(95% CI=3,75-13.8); of weight change during middle life(>10kg compared with $\leq$ 5) was 1.77(95% CI=1.16-2.69); of smoking(current vs none) was 1.93(95% CI=1.06-3.51); and fat intake(upper fertile compared with lower fertile) was 1.88(95% CI=1.01-3.49), while fiber intake was associated with the reduced risk(HR=0.36, 95% CI=0.19-0.67). Conclusion : The factors identified in this study indicate that the greatest reduction in risk of diabetes might be achieved through population-based efforts that promote fiber intake and reduce obesity, smoking, and fat intake.
This study was conducted to provide basic information on the nutritional status and dietary behaviors of the deaf teenagers. The subjects of this study were 87 deaf-mute high school students in Pusan and Kyung-nam area and, in comparison,90 general high school students in Ham-an area. The survey was investigated by using a self-administered questionnaire. The results were as follows: Deaf-mute group was consisted of 63.2% male and 36.8% female, and mean of height and weight of male were 171.2 cm and 61.9kg, female were 158.0cm and 51.7kg. Obesity index and body mass index (BMI) were normal range in both deaf-mute and normal groups. The average nutrition knowledge score of the deaf-mute group was 6.8 $\pm$ 1.5 out of possible 10 points, that was significantly lower than 7.3 $\pm$ 0.8 of the normal group (p<0.01). The mean of self-control and conscious control scores in the eating behaviors of the deaf-mute group were 2.6 $\pm$ 1.2 and 2.4 $\pm$ 1.3 out of possible 5 points from each item, which was significantly higher than 2.1 $\pm$ 1.3 and 1.8 $\pm$ 1.4 of the normal group (p< 0,01). Nutrients consumed below 90% of Korean RDA were energy (79.9%), Ca (71.5%) for deaf-mute male students and Ca (88.5%) for deaf-mute female students. Energy (71.4%), protein (87.8%), Ca (74.8%), vitamin B$_1$ (83.4%) intake of normal male students and energy (72.8%), Ca (71.2%), Fe (78.7%) intake of normal female students were below 90% of Korean RDA. Energy, protein, fat, vitamin B$_1$, niacin intake of deaf-mute male students were significantly higher than normal male students and all nutrients intake of deaf-mute female students were significantly higher than normal female students. By the correlation of nutrients intakes with nutrition knowledge, there was positive correlation with the intakes of Ca, Fe, vitamin A, vitamin B$_2$, and vitamin C in the deaf-mute group, while there was negative correlation with the nutrients intakes (except for protein and fat) in the normal group. The amount of meal, breakfast, regularity of meal time, frequency of snacks showed a positive relation to nutrient intakes in deaf-mute group and amount of meal, breakfast, regularity of meal time, frequency of overeating showed a positive relation to nutrient intakes in normal group. The nutrition knowledge had no correlation with food habits or eating behaviors in both groups.(Korean J Nutrition 35(9) : 982~995, 2002)
BACKGROUND/OBJECTIVES: Breast milk is the best available food for optimum growth and development of infants and the breastfeeding rate is increasing in Korea. The purpose of this study is to measure the concentrations of macronutrients and to evaluate their changes according to lactation period in breast milk from lactating Korean women. SUBJECTS/METHODS: Milk samples were obtained from 2,632 healthy lactating women (mean age; $32.0{\pm}3.3years$), where the lactating period was up to a period of 8 months, who also volunteered to participate in the Human Milk Macronutrient Analysis Research. Lactose, protein, fat and water content in the breast milk samples were analyzed with infrared spectrometry using MilkoScan FT-2. RESULTS: The mean macronutrient composition per 100 mL of mature breast milk was 7.1 g for lactose, 1.4 g for protein and 3.0 g for fat, and energy content was 61.1 kcal. The protein concentration was significantly lower in milk samples at 1-2 weeks (2.0 g/dL) to 2-3 months (1.4 g/dL) than those at 0-1 week (2.2 g/dL), but it was similar among samples from 3-4 months to 7-8 months (1.3 g/dL). Mean lipid levels varied among different lactational period groups (2.7-3.2 g/dL), but presented no significant difference. Lactose concentration in the milk samples did not differ with lactation period. Maternal body mass index was positively related to protein and lipid breast milk contents, but was negatively related to lactose content. General linear models examining the associations between maternal variables and milk macronutrient content revealed that lactation period had a major impact on protein and lipid, but not on lactose content in breast milk. CONCLUSIONS: These results warrant future studies to explore factors that may be associated with changes in macronutrient content in human milk.
Objectives : This clinical study was done to examine metabolic syndrome (MS) and plasma homocysteine (HCY) level in patients with silent lacunar infarction (SLI) and in normal controls. Methods : A total of 154 patients, who were over 20 years of age and visited the stroke prevention check-up center of a university hospital from December 2006 to December 2010, were examined by brain CT or brain MRI, and classified into two groups. We compared the components of MS and HCY levels between patients with SLI (n=74) and normal controls (n=80). Modified ATP III definition was used for diagnosis of MS while Korean standard for waist circumference was used. Results : Prevalence of MS was significantly higher in the SLI group than the normal group. HCY was also significantly higher in the SLI group than the noraml, and the odds ratio (OR) for SLI, comparing high HCY level (${\geq}10{\mu}mol/L$) with low HCY level ($<10{\mu}mol/L$), was 3.64 (95% confidence interval (CI); 1.81-7.29, p<.0001). However, there was no correlation between MS and HCY in the SLI group. Prevalence of diabetes and hypertension (HT) was higher in the SLI group than the normal group, but there was no significant difference in blood lipids level between the SLI and normal groups. Of note, HT itself was enough to be an independent risk factor for SLI (OR; 4.58, 95% CI; 1.91-11.01, p=0.001). Body mass index, waist circumference, waist-hip ratio and visceral fat area were significantly higher in the SLI than normal group, and visceral fat area was enough to be an independent risk factor for SLI (OR; 2.41, 95% CI; 1.04-5.59, p=0.040). Conclusions : SLI is shown to have significant correlation with HCY and prevalence of MS, however there is no relationship between HCY and prevalence of MS in patients with SLI.
The objective of this experiment was to determine the effects of n-3 polyunsaturated fatty acids (n-3 PUFAs)-enriched diet supplemented with different levels of $\alpha$-tocopherol on the activities of hepatic lipogenic-related enzymes and the contents of liver and plasma lipid fractions in laying Tsaiya ducks. A total of 180 30-wk-old laying Tsaiya ducks, at the beginning of peak production, were allotted into 6 treatments with 3 replicates each. Ducks were fed one of the 6 experimental diets, containing 4% tallow (control), and 4% fish oil supplemented with graded levels of $\alpha$-tocopheryl acetate ($\alpha$-tocopherol) at 0, 100, 200, 300 and 400 mg/kg, respectively, for 6 wks. Feed and water were supplied ad libitum throughout the experimental period. The results indicated that the n-3 PUFAsenriched diet supplemented with different levels of $\alpha$-tocopherol did not affect (p>0.05) egg weight, feed intake, body weight change or liver and abdominal fat weights. Egg production, egg mass and feed efficiency significantly (p<0.05) improved as dietary $\alpha$-tocopherol levels increased. The activities of hepatic lipogenic-related enzymes including acetyl-CoA carboxylase (EC 6. 2. 1. 3; ACC), glucose-6-phosphate dehydrogenase (EC 1. 1. 1. 49; G-6-PDH), ATP-citrate cleavage enzyme (EC 4. 1. 3. 8; CCE), NADP-malate dehydrogenase (EC 1.1.1.40; NADP-MDH) and fatty acid synthetase (FAS) were higher (p<0.05) in birds fed with the tallow diet than in those fed with fish oil diets and increased with increasing dietary $\alpha$-tocopherol levels. None of the dietary treatments significantly affected the contents of triglyceride and total cholesterol in the liver, or total cholesterol, phospholipid and total lipid in the plasma. However, the contents of phospholipid and total lipid in the liver, and triglyceride in the plasma increased as dietary $\alpha$-tocopherol levels increased. Increasing dietary $\alpha$-tocopherol levels decreased the non-esterified fatty acid (NEFA) content in the plasma and trended to decrease the cholesterol contents in the egg yolk. The lipid metabolism of laying Tsaiya ducks was influenced not only by the dietary fat but also by the supplementation levels of $\alpha$-tocopherol.
In a majority of mammals, male infants have heavier body mass and grow faster than female infants. Accordingly, male offspring nursing requires a much greater maternal energy contribution to lactation. It is possible that the maternal-fetal immunoendocrine dialog plays an important role in female preparation for lactation during pregnancy. Immune system genes are an integral part of gene regulatory networks in lactation and tumor necrosis factor alpha ($TNF{\alpha}$) is a proinflammatory cytokine that also plays an important role in normal mammary gland development. The aim of this study was to evaluate the influence of the sex of calf and/or the -824A/G polymorphism in the promoter region of $TNF{\alpha}$ gene on milk performance traits in Black Pied cattle over the course of lactation. We also studied the allele frequency differences of -824A/G variants across several cattle breeds, which were bred in different climatic conditions. The G allele frequency decreased gradually over the course of lactation events in the Black Pied dairy cattle because of a higher culling rate of cows with the G/G genotype (p<0.001). In contrast to the genotypes A/A and A/G, cows with G/G genotype showed significant variability of milk and milk fat yield subject to sex of delivered calf. Milk yield and milk fat yield were significantly higher in the case of birth of a bull calf than with a heifer calf (p<0.03). The G allele frequency varies from 48% to 58% in Grey Ukrainian and Black Pied cattle to 77% in aboriginal Yakut cattle. Our results suggest that the $TNF{\alpha}$-824A/G gene polymorphism may have an influence on the reproductive efforts of cows over the course of lactation events depending on the sex of progeny. Allocation of resources according to sex of the calf allows optimizing the energy cost of lactation. This may be a probable reason for high G allele frequency in Yakut cattle breeding in extreme environmental conditions. Similarly, the dramatic fall in milk production after birth of a heifer calf increases the probability of culling for the cows with the G/G genotype in animal husbandry.
Objective : This experimental study was designed to determine the effects of BPT on obesity in vivo and in vitro. Methods : in vitro, BPTn extracts of various concentration(50, 100, 200 ${\mu}g/m{\ell}$) were added in 3T3-L1 cell. Adipocyte differentiation was measured by Oil Red O staining and Morphological examination. The expression of $C/EBP{\alpha}$ and $PPAR{\gamma}$ receptor was measured by western blot assay and RT-PCR in vivo, Rats were orally administered BPT daily for consecutive four weeks before poloxamer-407 induced hyperlipidemic state. The rats were sacrificed 24 hrs later for poloxamer-407 treated and then serum triglyceride, total cholesterol were measured ; Rats were orally administered BPT daily for consecutive four weeks before triton WR-1339 induced hyperlipidemic state. The rats were sacrificed 40 hrs later for triton WR-1339 treated and then serum triglyceride, total cholesterol were measured ; Rats with obesity were induced by the high fat-diet for six weeks and then serum triglyceride, total cholesterol, LDL-cholesterol, triglyceride, HDL-cholesterol, hydroxy radical, superoxide dismuatse activity were measured. Results : In vitro, The 3T3-L1 cells' differentiation was significantly decreased by BPT. The expression of $C/EBP{\alpha}$ and $C/EBP{\beta}$ was decreased by BPT. In vivo, BPT significantly reduced serum triglyceride, total cholesterol contents in poloxamer-407 treated rat. BPT significantly reduced serum triglyceride contents in Triton WR-1339 treated rat. Total cholesterol also reduced but did not show a significant change. BPT significantly reduced body weight gain of rat and adipose tissue mass of rats and serum triglyceride, LDL-cholesterol contents and significantly increased HDL-cholesterol, HTR(HDL-cholesterol/Total-cholesterol) in rats with obesity induced by the high fat-diet. BPT reduced blood lipid peroxide, hydroxy radical and increased superoxide dismuatse(SOD) activity.
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