• Yonsei Medical Journal
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• 제59권9호
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• pp.1138-1142
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• 2018

This study aimed to analyze the impact of sleep deprivation (SD) on cardiac, hemodynamic, and endothelial parameters and to determine whether these are sustained with increased periods of SD. The study included 60 healthy men (mean: age $31.2{\pm}6.3years$; body mass index $24.6{\pm}2.6kg/m^2$). Hemodynamic parameters, parameters of myocardial contractility, spectral analysis of heart rate (HR) and blood pressure (BP) variability, and the sensitivity of arterial baroreflex function were evaluated. Biochemical tests were performed to assess L-arginine (L-Arg) and asymmetric dimethylarginine (ADMA) levels in reflection of endothelial nitric oxide synthase ability. Measurements of cardiovascular system parameters were obtained at 9 a.m. (baseline) on the first day of the study and 9 a.m. (24-h SD), 1 p.m. (28-h SD), and 5 p.m. (32-h SD) on the second day. Blood samples for evaluating biochemical parameters were obtained at baseline and after 24-h SD. ANOVA Friedman's test revealed a significant effect for time in relation to HR (${\chi}^2=26.04$, df=5, p=0.000), systolic BP (${\chi}^2=35.98$, df=5, p=0.000), diastolic BP (${\chi}^2=18.01$, df=5, p=0.003), and mean BP (${\chi}^2=28.32$, df=5, p=0.000). L-Arg and ADMA levels changed from $78.2{\pm}12.9$ and $0.3{\pm}0.1$ at baseline to $68.8{\pm}10.2$ and $0.4{\pm}0.1$ after 24-hr SD, respectively (p=0.001, p=0.004). SD in healthy men is associated with increases in BP, which appear to occur after 24 hours of SD and are maintained over increasing periods of SD. The observed hemodynamic changes may have resulted due to disordered vascular endothelial function, as reflected in alterations in L-Arg and ADMA levels.

• Journal of Nutrition and Health
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• 제26권5호
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• pp.593-602
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• 1993

As part of the Nutrition CRSP Mexico project conducted in rural villages in highland Mexico, this study examined whether nutritional factors, family characteristics, and the duration of schooling were associated with cognitive performances in 107 schoolers(53 boys and 54 girls) aged 8~10. Food intake was measured by recall, direct observation and weighment twice monthly over the course of a year. Families were characterized in terms of socioeconomic status and parental cognitive performance, education and aspiration. Dietary quality, but not energy intake, and anthropometry (wt-for-age, ht-for-age, head circumference) were significantly associated with cognitive test results for both verbal and performance measures. When the effect of SES is controlled using partial correlation, the relationships were substantially weakened. Sex differences were also found in response to nutritional deprivation. Among boys, dietary quality was the most important indicator of cognitive performance, while household economic conditions were more importantly associated with cognitive performance among girls. Participation in schooling was important for cognitive skille as it related to nutritional status.

• 한국양식학회:학술대회논문집
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• 한국양식학회 2003년도 추계학술발표대회 논문요약집
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• pp.76-77
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• 2003

Olive flounder Paralichthys olivaceus larvae and early juveniles were reared for 43 days after hatching in order to observe the effects of starvation during development and metamorphosis. Morphological, histological and biochemical measurements were made to assess the nutritional condition during growth and starvation from pre-matamorphic through post-metamorphic phases. Two groups of fish were compared ; one with sufficient food supply and one under continuous starvation until death. Among morphometric analyses, both ratios of body height at anus/head height and pre-/post-anal lengths appeared to be sensitive to starvation during which substantial reduction was observed within a day of food deprivation. Histological variables as intestinal and rectal epithelial heights and gall bladder volume changed significantly with onset of starvation. The gut epithelial heights of starving fish decreased with advances in starvation, although they fluctuated during mid-metamorphic phase. In contrast, gall bladder volume increased remarkably soon after starvation. Ontogenetic changes in both gut epithelial height and gall bladder volume were evident, those associated with settlement and/or completion of metamorphosis. Abrupt decrease in the RNA/DNA ratios of starving fish were found right after onset of starvation. Even in the fed fish marked fluctuations in its ratios during metamorphosis were observed, evident by decreasing from late-metamorphic to post-metamorphic stages. These findings suggest that a combination of morphologically and histologically sensitive characteristics, and biochemical measurement could be utilized as a measure to evaluate nutritional condition related to starvation in wild olive flounder larvae and juveniles.

• 대한본초학회지
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• 제31권2호
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• pp.1-5
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• 2016

Objectives : Seborrheic dermatitis is an inflammatory skin disorder affecting the scalp, face, and torso. Typically, it presents with scaly, flaky, itchy, and red skin. It may be aggravated by illness, psychological stress, fatigue, sleep deprivation, change of season. The purpose of this study was to report the clinical effects of herbal medicine on Seborrheic dermatitisMethods : We employed oriental medical treatments; herbal-medication (Bangpungtongsungsangamibang), acupuncture, moxibustion and cupping therapy. At the same time, the patient sweated out the skin poison. We treated him two times a week with oriental therapy method. He took medicine three times a day after a meal. During taking medicine, we let him avoid fatty food, flour based food, and alcohol. We took a picture the patient's body parts and compared the symptom with previous symptom. With the picture, we evaluated the patient's condition.Results : After taking treatment - 77 times' acupuncture, moxibustion and cupping therapy during 9 months and taking herbal-medicine, the skin condition of the patient was much improved. At first, he was troubled with itching and hot feeling at reddish area, time after time the itching and hot feeling was weakened. The reddish area was changed to scaly and flaky skin and changed to normal state.Conclusions : Herbal medicine (Bangpungtongsungsangamibang) with oriental medical treatments was an effective in the treatment of Seborrheic Dermatitis and it helped to improve regenerating the skin in the body.

• Asian-Australasian Journal of Animal Sciences
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• 제27권9호
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• pp.1360-1367
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• 2014

Triplicate groups of fed and starved olive flounder, Paralichthys olivaceus (body weight: $119.8{\pm}17.46$ g), were examined over 42 days for physiological changes using hematological, biochemical, and non-specific immune parameters. No significant differences in concentrations of blood hemoglobin and hematocrit and plasma levels of total cholesterol, aspartate aminotransferase, alanine aminotransferase, glucose, and cortisol were detected between fed and starved groups at any sampling time throughout the experiment. In contrast, plasma total protein concentrations were significantly lower in starved fish than in fed fish from day 7 onwards. Moreover, plasma lysozyme concentrations were significantly higher in starved flounder from day 21 onwards. This result confirms that the response of olive flounder to short-term (less than about 1.5 months) starvation consists of a readjustment of metabolism rather than the activation of an alarm-stress response. The present results indicate that starvation does not significantly compromise the health status of fish despite food limitation.

• 한국수산과학회지
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• 제29권2호
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• pp.150-156
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• 1996

양식 넙치, Paralichthys olivaceus를 실험어로 하여 동물 성장인자중의 하나인 insulin-like growth factor-I (IGF-I)의 함량을 검토하였다. 넙치의 혈액중에 존재하는 IGF-I의 양은 47ng/m1이고, 절식을 할 경우 식이를 섭취한 것에 비해 약 $15\%$ 감소하였으며, 운동에 의해서는 약 $13\%$의 감소를 보였다. 혈액중 IGF-I의 농도는 어체의 크기에 따라서도 영향이 있음을 알수 있었다.

• 한국지역사회생활과학회지
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• 제12권2호
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• pp.33-45
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• 2001

This study was performed to investigate the degree of different stresses in university students of outer region of Seoul and to search the influence of food habit and nutrient intakes in stress. The data was collected by questionnaire method for self-diagnosed different stresses, dietary habit, and physical status and 24 hours recall for nutrient intakes. The subjects were 282 students attended at the lecture Food and Health. Diet balance was no difference with gender but food intakes were more diverse in female. Nutrient intake of male students was lower in vitamin A and riboflavin, but that of female was low in vitamin A and iron. The university students outer region of Seoul had more stress situation in frustration, deprivation and self-efface than in the stress of the noise and Type-A behavioral stress. Total self-diagnosed dietary habit score was better in the group of no susceptive overload stress than that of the high susceptive group. Same trend of dietary behavior score was in the group of no noise and anxiety-response stress than that in the susceptive groups. The quantity of nutrient intakes was correlated with different kind of stress. Niacin intake was positively related with the stress from life-events, and food induced stress. Thiamin intake was positively related with food induced stress. But the intake of iron, calcium, niacin and riboflavin were negatively related with the stress of noise. Therefore, we could concluded that different kind of stresses were influenced in dietary behavior and vitamin-mineral nutrient intakes. More research would be needed at the aspects of health promotion in the stressful situation of modern society.

• 한국식생활문화학회지
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• 제34권4호
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• pp.486-494
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• 2019

There are an increasing number of reports that job related factors are associated with hypertension, sleep deprivation, obesity and diabetes. This study analyzed the relationship of working type, working hours and the prevalence of metabolic syndrome. The study's subjects were 2,777 employees (1,446 males and 1,331 females) over 19 years old and their data was from the Korea National Health and Nutrition Survey (2015). The type of work was divided into day work and shift work. The working hours were divided into less than 40 hours, 40 to 49 hours, 50 to 59 hours and 60 hours or more per week. As a result of this study, the prevalence of metabolic syndrome was 26.4% of the males and 19.1% of the females. Generally there was no relationship between metabolic syndrome and type of work (day work and shift work). As a result of analysis of working hours and metabolic syndrome, the workers who worked 40-49 hr were associated with a decreased prevalence of metabolic syndrome as compared to that of workers who worked less than 40 hr (odds ratio: 0.47, 95% confidence interval: 0.24-0.95, p<0.05). Further, positive relationships were found between the number of work hours and the prevalence metabolic syndrome for specific females who worked over 40 hr/wk. It can be concluded from the results that it is important to help workers avoid metabolic syndrome through setting appropriate work hours.

• Asian-Australasian Journal of Animal Sciences
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• 제18권3호
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• pp.396-402
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• 2005

Three experiments were conducted to determine the effects of dietary arginine concentrations on plasma free amino acid (PAA) concentrations in rainbow trout, Oncorhynchus mykiss (Walbaum). The first experiment was conducted to determine appropriate post-prandial and food deprivation sampling times in dorsal aorta cannulated rainbow trout averaging 519${\pm}$9.5 g (mean${\pm}$SD) at $16^{\circ}C$. Blood samples were taken at 0, 2, 3, 4, 5, 6 and 24 h after feeding (0 and 24 h blood samples were taken from the same group of fish). PAA concentrations increased by 2 h post-feeding and the concentration of all essential amino acids except histidine peaked at 5 h and returned to 0 time values by 24 h. In the second experiment dorsal aorta cannulated rainbow trout averaging 528${\pm}$11.3 g (mean${\pm}$SD) were divided into 6 groups of 4 fish to study the effect of dietary arginine levels on PAA. After 24 h food deprivation, each group of fish was fed one of six L-amino acid diets containing graded levels of arginine (0.48, 1.08, 1.38, 1.68, 1.98 or 2.58%) by intubation. Blood samples were taken at 0, 5 and 24 h after feeding. Post-prandial (5 h after feeding) plasma-free arginine concentrations (PParg) showed a breakpoint at 1.03% arginine in the diet and post-absorptive (24 h after feeding) plasma free-arginine concentrations (PAarg) showed a breakpoint at 1.38% arginine. PAarg increased linearly from fish fed diets containing arginine between 0.48% and 1.38%, and the concentrations remained constant from fish fed diets containing arginine at or above 1.38%, but were all below PParg at all time points. Results of the third experiment confirm the results that PParg concentrations from fish fed arginine deficient diets were higher than PAarg (0 or 24 h values). Thus, in contrast to mammals and birds, the PParg when arginine is present in the diet as the most limiting amino acid such that it severely limits growth, increases in plasma rather than decreases.

• 생명과학회지
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• 제16권4호
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• pp.618-625
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• 2006

등줄쥐에서 일중휴면이 어떤 요인에 의하여 유발되는지를 알기 위하여, 온도, 먹이 및 광주기를 조절하여 등줄쥐의 체온변화를 자동온도기록장치를 이용하여 조사하였다. 등줄쥐 암컷에서는 21개체 중 8개체가 겨울철 및 봄철 실외환경, 저온실$(4^{\circ}C)$과 절식상태$(23^{\circ}C)$에서, 등줄쥐 수컷에서는 23개체 중 2개체가 겨울철 실외환경에서 휴면을 하는 점으로부터, 일중휴면은 일부 암 수 등줄쥐에서 저온이나 먹이결핍 등 갑작스런 환경변화에 대처하기 위한 에너지 절약대책으로 채택되고 있음이 시사되었다. 그러나 수컷에서는 번식기에는 번식 기회를 줄이지 않기 위하여 휴면을 억제하지만 암컷에서는 번식기에도 휴면을 하는 점으로부터 암 수가 서로 다른 전략으로 집단을 유지하고 있다고 생각되었다. 일중휴면은 오전 6시${\sim}$낮 12시 사이에 가장 빈번하게 관찰되었으며, 휴면시의 체온의 하강은 어떠한 조건에서도 주위온도가 가장 낮은 오전 4시${\sim}$6시경에 시작되었는데, 이러한 점은 일중휴면이 열 손실의 억제를 위한 전략임을 시사하고 있다. 휴면시 최저체온은 $16.5^{\circ}C$이었다. 광주기의 영향은 없었으며, 일정온도 하에서 항상 암기$(24D,\;4^{\circ}C)$에 두거나, 절식$(23^{\circ}C)$ 하에 광주기를 변화시켜도(16L:8D 또는 8L:16D) 서로 유사한 시각에 일중휴면이 일어나고 있어, 일중휴면 시각이 광주기에 의해서 조절되지 않으며 활동일주기의 영향을 받고 있다고 생각되었다.