• Journal of Nutrition and Health
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• 제31권8호
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• pp.1270-1282
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• 1998

The purpose of this research is to compare the effdct of the new weekly iron supplementation on maternal iron and zinc nutritional status with the effect of the present daily iron supplementation. To assess the iron ad zinc status of rpegant women visiting public health center in Ulsan, interview for dietary survey and general aspect of each subject was given and biochemical analysis of blood and urine was performed. The study subjects were divided to two groups randomly, but the subjects whose Hgb level was very low were allocated in daily group ethically because theeffect of weekly supplementation was not yet established as safety. Daily group received 80mg elemental Fe(250mg Fe as ferrous sulfate) per day for 100days, while weekly group received 160mg elemental Fe once a week for 15 weeks. After treatement, Hgb(p<0.01), Hct(p<0.01) , serum iron(p<0.05) and serum ferritin(p<0.001) in weekly group but RBC, Hgb , Hct , serum iron and serum iron and serum ferritin increased slightly. After correction for the initial Hgb by including it in the MANIVA, the difference in treatment effects of Hgb and TIBC between groups was statistically significant. The effect of weekly vs, daily iron supplementation program on zinc status was also studied. The difference in treatment effect between two groups was, however, not sifnificant. It is concluded that once weekly rion supplementation program in pregnant women was less effectgive to improve the iron status than daily iron supplementation program. However, because the weekly dose prevented a decline in Hgb as well as in ferritin, itw effect was positive , given the fact that non-supplemented women almost always exhibit a sifnificant drop in Hgb values. It seems that it will improve the iron status well if the amount or frequency of supplements is to be adjusted . Biweekly supplementation of a different dose or antother type of iron supplement, such as through a gastric delivery system, might be better.

• Journal of Nutrition and Health
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• 제22권1호
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• pp.9-22
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• 1989

The effect of different levels of Zn (0, 30, 300ppm) and protein(7, 20, 40%) in the diet upon lipid metabolism was investigated in Sprague-Dawley male rats weighting 180.54$\pm$29.08g(n=450 fed one of nine diets in a 3$\times$3 factorial design for 5 weeks. The reults obtained were summarized as following. 1) Total lipid contents in serum and liver were tended to be lower in LZn group than CZn and Hzn groups. Those of LP group were higher than CP and HP groups. 2) HDL-cholesterol and total cholesterol contents in serum were significantly affected by dietary Zinc level and were increased as dietary Zinc level increase. 3) Total cholesterol in liver and muscle were tended to be decrease as dietary Zinc level increase. Those in LP group were higher than CP and HP groups. 4) Zinc contents in plasma, liver, muscle and testis were tended to be lower in LZn group than CZn and HZn groups. 5) Protein contents in plasma and liver lower in LZn group than CZn and HZn groups when dietary protein level was 7% and 20%. Those in LP group were lower than those in CP and HP groups. 6) Cu contents in plasma, liver, muscle and testis were tended to be decreased as dietary Zinc level increase.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제9권1호
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• pp.14-22
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• 2006

목 적: 아연은 인체의 성장, 발육 및 면역기능에 필요한 미량 영양소이다. 아연의 만성결핍은 장성선단 피부염(acrodermatitis enteropathica)이 알려져 있지만 급성결핍에 관한 보고와 그에 따른 치료 기준은 알려져 있지 않다. 영유아의 급성 장염에서는 섭취량이 감소하고, 설사로 인한 아연의 배설이 증가하여 아연의 체내 영양상태에 대한 평가가 요구된다. 본 연구에서는 급성 장염 영유아에서 아연의 영양 상태 표지자인 혈청 아연농도를 측정하고 이에 영향을 주는 인자들을 알아보고자 하였다. 방 법: 2005년 5월부터 8월까지 이대목동병원 소아 응급실에 급성 장염으로 방문하였거나 입원한 5세 미만의 환아 중 32명(남아 15명, 여아 17명)을 대상으로 하여 임상적, 혈액학적, 생화학적 인자가 아연의 혈청 농도에 미치는 영향을 분석하였다. 아연농도의 측정은 유도결합 플라즈마 발광분광법을 이용하였다. 결 과: 임상적으로 구토 유무, 설사 기간, 탈수 정도, 혈변 유무에 따른 혈청 아연농도의 유의한 차이는 없었다. 혈청 아연농도는 발열 환아에서 열이 없었던 환아보다 유의하게 낮았다($67.0{\pm}25.3$ vs $85.5{\pm}14.2{\mu}g/dL$, p=0.012). 혈청 아연농도는 CRP 양성인 경우에 유의하게 낮았으나($63.9{\pm}25.4$ vs $85.7{\pm}13.8{\mu}g/dL$, p=0.002) 로타바이러스 감염 유무에 따른 차이는 없었다. 혈청 아연농도는 CRP (r=-0.494, p<0.05)와 유의한 음의 상관관계를 보였다. 혈청 아연농도는 헤마토크릿(r=0.370, p<0.05), 총단백질(r=0.474, p<0.05), 알부민(r=0.636, p<0.05)과 유의한 양의 상관관계를 나타내었다. 혈청 아연농도가 $70{\mu}g/dL$ 이상인 군과 미만인 군을 비교하였을 때, $70{\mu}g/dL$ 미만인 군에서 CRP 양성인(91.7% vs 40%) 환아와 CRP 양성이면서 발열이 동반되었던 환아의 빈도(91.7% vs 35%)가 유의하게 많았다(p<0.05). 결 론: 급성 장염 소아에서 혈청 아연농도는 발열, CRP, 헤마토크릿, 총단백질, 알부민 등의 다양한 인자의 영향을 받으므로 체내 아연의 영양 상태를 평가할 때 고려하여야 한다.

• 대한지역사회영양학회지
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• 제2권2호
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• pp.133-140
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• 1997

The serum concentrations of the major minerals(calcium, phosphorus, magnesium, sodium, potassium) and trace elements(iron, Zinc, copper manganese)were datermined in 23 breast fed infants living in Eumsung, Choong-buk region. The results obtained are summarized as follows: 1)The mean levels of calcium, phosphorus, magnesium, sodium and potassium of the serum of total subjects were 8.15$\pm$0.33mg/dI, 11.06$\pm$0.16mg/dI, 2.00$\pm$0.14mg/dI, 3.4476$\pm$17.99mg/dI and 9.06$\pm$2.04mg/dI respectively. 2)The serum concentrations of iron, zinc, copper and manganese in total subjects averaged 95.83$\pm$0.33mg/dI, 93.79$\pm$7.06$\mu$g/dI and 98.57$\pm$7.06 $\mu$g/dI and 4.93$\pm$0.62$\mu$g/dI respecitively. 3)Breast fed infants had significantly higher serum calcim, magnesium, sodium and iron concentrations than the formula fed groups. Otherwise, serum potassium, copper and manganese levels in breast milk fed infants were significantly lower than those in formula fed infants. 4) In formula fed infants, serum potassium and copper levels increased increased significantly with months after birth.

• Nutritional Sciences
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• 제5권4호
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• pp.190-196
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• 2002

Zinc deficiency has been shown to result in poor appetite, causing anorexia. However, the role of zinc in the regulation of food intake is not well understood. In the present study, we hypothesized that zinc deficiency dysregulates circulating leptin level and leptin mRNA gene expression, and that whether these changes were occuring as a direct result of, or as a compensatory effect of zinc deficiency in rats. After an adaptation period of 4 weeks, Sprague Dawley rats were provided with three different level of zinc, as one week of a Zn-adequate (30 mg/kg) diet, then two weeks of a Zn-depletion (1 mg/kg ), and finally by two weeks of a Zn-repletion (50 mg/kg) diet. At the end of each dietary experimental period, one third of the 26 rats were killed. Zinc levels of blood subfractions (plasma, yee blood cells and mononuclear cells) and in the liver were substantially decreased, despite the fact that food intake was not substantially decreased during the Zn-depletion period. Serum leptin concentration was significantly increased during the zinc depletion period. Leptin mRNA in adipose tissue was also shown to be highly expressed during the Zn-depletion period. Presumably, increased leptin level and leptin mRNA induction during Zn-depletion conditions may be the cause of lowered appetite which is the common symptom of Zn-deficiency. In conclusion, These increases in circulating leptin levels and in leptin gene expression would be the direct result of, rather than the compensatory effect of, zinc deficiency.

• Nutritional Sciences
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• 제7권2호
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• pp.83-87
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• 2004

To investigate the effects of dietary phytate reduction and zinc supplementation on biochemical iron parameters in elderly Korean women consuming inadequate iron, fifteen healthy women aged 64-75 years were recruited for a feeding study. A high-phytate diet (27.8 phytate:zinc molar ratio) was provided for 9 days, followed by a nine-day low-phytate diet(12.3) and a subsequent 28-day period of unregulated meals with zinc supplementation (22 mg/d as zinc gluconate). Serum iron increased significantly with the low-phytate diet (130.4 $\mu g$/L) but returned to the level observed during the high-phytate diet (113.0 $\mu g$ /L) period when subjects were taking zinc supplements (105.8 $\mu g$ /L). However, serum ferritin in the subjects decreased significantly with the low-phytate diet (73.8 $\mu g$ /L) as well as with zinc supplementation (57.2 $\mu g$ /L), compared to levels following consumption of the high-phytate diet (89.6 $\mu g$ /L). Transferrin receptor and transferrin saturation were unchanged with the treatments. In summary, zinc supplementation might result in deteriorated iron status in elderly Korean women who consume inadequate iron, while there was no significant effect from reducing dietary phytate.

• 동아시아식생활학회지
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• 제15권6호
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• pp.687-699
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• 2005

In order to investigate the effect of dietary zinc and phytic acid levels on protein metabolism in rats, male rats of Sprague-Dawley strains weighing approximately $60\~74g$ were fed different diets which contained 0, 0.35 and $1.05\%$ phytic acid each at 3 levels of zinc(0, 30 and 1,500 ppm zinc) for 28 days. Result obtained in this experiment are summarized as follows; 1. Body weight gait food consumption food efficiency ratio and protein efficiency ratio were lower in the rats fed zinc deficient diet(0 ppm zinc) than in those consuming 30 or 1,500 ppm dietary zinc, and the additional effect of phytic acid were not observed in all of then 2. Liver weight was lower in the rats fed 30 ppm zinc diet than in those fed 0 or 1,500 ppm-zinc diet but kidney and spleen weights were lower in the rats fed zinc deficient diet than in those fed 30 or 1,500 ppm-zinc diet Among organs measured only the liver appeared to be influenced by dietary phytic acid: the more the dietary phytic acid, the more the weight of liver, 3. Fecal nitrogen was decreased in the rats fed zinc deficient diet compared with those fed 30 or 1,500 ppm dietary zinc. Urinary nitrogen was increased in the rats fed $1.05\%$ dietary phytic acid compared with those fed 0.35 or $0\%$ dietary phytic acid Nitrogen retention of rat was influenced by neither dietary zinc nor phytic acid. 4. Urea nitrogen was decreased with increasing dietary zinc levels, and creatinine and uric acid levels were increased with increasing dietary zinc concentration or with additional quantity of phytic acid. Uric acid appeared to be influenced by zinc x phytic acid interaction; especially, the presence of phytic acid in the 30 ppm-zinc diet had significant effect on uric acid content. 5. Hemoglobin concentrations and hematocrit ratio were higher in the rats fed 30 ppm dietary zinc than in those fed 0 or 1,500 ppm-zinc diet Serum zinc concentration was increased with increasing dietary zinc levels. The content of total protein albumin and BUN and the ratio of albumin to globulin in serum, and protein content in liver were influenced by neither dietary zinc nor phytic acid.

• Clinical and Experimental Pediatrics
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• 제48권4호
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• pp.406-410
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• 2005

목 적 : 항경련제는 여러 가지 부작용을 갖고 있으며, 그 중 일부는 혈청 내 미량 원소의 항상성 장애이다. 미량 원소는 신체 내에 낮은 농도로 존재하며, 조직의 작은 부분을 구성하지만 중추와 말초 신경계에서 중요한 역할을 한다. 저자들은 6개월 이상 항경련제를 복용하고 있는 간질 환아의 혈청 구리와 아연농도를 측정하여 항경련제가 신체 내 미량 원소의 항상성에 미치는 영향을 알아보고자 하였다. 방 법 : 1997년 1월부터 2003년 12월까지 충남대학교병원 소아과에서 간질 진단 하에 항경련제를 복용 중인 환아 64명(남 : 29, 여 : 35)과 정상 대조군 20명(남 : 12, 여 : 8)을 대상으로 하였고 정맥혈을 채취하여 혈청 구리와 아연의 농도를 측정하였다. 항경련제를 복용하고 있는 간질 환아 군을 VPA 단일 복용군, VPA를 포함하는 복합 복용군, VPA 외의 항경련제 복용군의 세 군으로 나누어 비교하였다. 결 과 : 혈청 구리 농도는 VPA 단일 복용군에서 $81.56{\pm}20.92{\mu}g/dL$, VPA를 포함하는 복합 복용군에서 $80.89{\pm}19.31{\mu}g/dL$, VPA 외의 항경련제 복합 복용군에서 $82.14{\pm}25.74{\mu}g/dL$로서 세 군 모두 대조군의 혈청 구리 농도 $102.13{\pm}32.80{\mu}g/dL$에 비하여 유의하게 낮은 양상을 보였다(P<0.05). 혈청 아연 농도는 항경련제 종류에 따라 분류한 상기 세 군에서 대조군보다 낮았으나, 유의한 차이는 없었다(P>0.05). 혈청 구리와 아연 농도는 항경련제의 종류 및 복용 기간에 의한 차이를 보이지 않았다(P>0.05). 결 론 : 항경련제 복용 환아군에서 정상 대조군보다 혈청 구리의 농도는 유의하게 낮았고, 혈청 아연의 농도는 정상 대조군과 유의한 차이를 보이지 않았다. 항경련제로 치료받는 간질 환아의 경우 혈청 구리 농도가 낮아질 수 있다.

• 대한수의사회지
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• 제20권1호
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• pp.29-40
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• 1984

Present experiments were conducted in order to clarify the effect of dietary low zinc and excess calcium on the zinc and calcium concentrations of serum and feces, and to show the therapeutic effect of external application of zinc or soybean oil on the sk

• Journal of Nutrition and Health
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• 제51권6호
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• pp.489-497
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• 2018

본 연구에서는 고지방식이로 유도한 비만군과 저지방식이를 공급한 대조군에서 각 조직의 아연 농도와 아연수송체 발현 수준을 비교하여, 비만 상태가 아연 대사에 미치는 영향을 파악하고자 하였다. C57BL/6J mice를 두 군으로 나누어 각 군당 15마리씩 고지방식이 (비만군) 또는 저지방식이 (대조군)를 총 15주간 공급하였다. 본 연구 결과, 비만군은 대조군에 비해 체중 증가량, 부위별 지방조직, 혈청과 간의 중성지방과 콜레스테롤 농도, 혈청 ALT 및 AST 활성 등이 모두 유의적으로 높게 나타났다. 또한 혈청 렙틴과 염증성 사이토카인인 IL-6의 농도도 비만군에서 유의적으로 증가하였다. 조직 별 아연 농도를 비교한 결과, 간, 소장, 신장, 췌장 등의 측정한 모든 조직에서 비만군이 대조군에 비해 유의적으로 낮게 나타났으며, 대변으로 배설되는 아연 함량은 비만군이 대조군에 비해 유의적으로 높았다. 혈청 아연 농도의 경우 두 군 간 유의적인 차이가 없었으나, 혈청 내 아연-의존 금속효소인 ALP 활성은 비만군에서 대조군에 비해 유의적으로 낮게 나타나 아연의 기능적인 결핍을 확인하였다. 내인성 아연의 체외 배출에 관여하는 췌장 조직에서의 ZnT1 mRNA 수준은 비만군에서 대조군에 비해 유의적으로 높게 나타났으며, 식이 아연 흡수에 관여하는 소장에서의 Zip4와 ZnT1의 mRNA 수준은 두 군간에 유의적인 차이가 없었다. 간 조직의 경우, ZnT1과 Zip10 mRNA이 모두 비만군에서 유의적으로 증가하였다. 이상의 결과를 요약하면, 비만 상태는 아연의 배설 증가와 조직 내 아연 농도 감소를 유발하는 것으로 나타났으며, 이들 아연 대사의 변화는 췌장과 간 조직의 아연 수송체 발현 수준 변화와 밀접한 관련이 있는 것으로 보인다. 비만인들에서 아연 영양상태가 결핍되지 않도록 관심을 가져야 할 것으로 생각되며, 비만으로 인한 아연 대사의 이상 (dysfunction)을 억제하기 위해서는 아연 수송체 발현을 조절할 수 있는 요인들에 대한 이해가 더욱 필요할 것으로 생각된다.