• 한국식품영양과학회지
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• 제25권5호
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• pp.855-864
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• 1996

신경외과 및 신경과에 입원하여 경관급식 중인 환자에 대하여 영양상태를 평가하고자 식이조사 및 생화학적 혈액분석을 행하였고, 또한 그 중 영양 섭취량이 부족한 성인 경관급식 환자들을 대상으로 경관 유동식의 보충에 따른 영양상태의 개선 효과를 실험하였다. 본 연구의 비위관 경관급식 환자는 전체 83명 (남 49명, 여 34명)으로 96.4%가 의식상태가 저하되어 있었으며, 경관급식 기간이 6주 이상인 환자가 37.3%이었다. 경관급식 투여방법은 모두 Bolus 투여법 이었으며, 튜브의 종류는 16~18Fr.의 Silicon관 및 Polyvinyl chloride 관을 사용하였다. 식이종류는 표준경관 유동식으로는 병원조제용 혼합 유동식과 상업용 유동식을 이용하였고, 설사나 구토 등의 부작용과 낮은 적응도에 의해 표준경관 유동식을 전 유동식, 미음 등과 병행하거나, 전 유동식만으로 처방하기도 하였다. 경관 유동식의 1일 투여 열량은 남자가 평균 1589.1kcal, 여자는 1315.0kcal였고, 열량대 질소의 비율은 139:1로 양호하였다. 1회 투여용량은 평균 353.4ml로, 350m1이상이 37.3% 에 이르렀으며 용량별 열량은 평균 0.77kcal/m1이었다. 생화학적 조사결과 전체 환자 중 36.1~75.9%가 각 검사치에서 영양결핍 상태이었으며, 특히 혈청 iron은72.3%, hemoglobin은 73.5%, hematocrite치는 75.9%가 결핍상태를 보였다. 열량 및 단백질 섭취량과 생화학적 검사치와는 양( + )의 상관관계를 나타내었다. 연령은 혈청 albumin 및 혈청 transferrin과 음(-)의 상관관계가 있었으며, 경관급식 기간은 total potein, 혈청 albumin, hemoglobin, hematocrite, 총 임파구수 등과 양( + )의 상관관계를 보였다. 또한, 경관급식 기간이 길어질수록 열량 및 단백질 섭취량은 유의적으로 증가하였다. (p<0.05). 7. 경관 유동식 보충투여군과 대조군에 대한 0주와 6주의 생화학적 변화상태 비교에서 total protein, 혈청 iron, 총 임파구수가 대조군에 비해 실험군에서 유의적인 증가를 보였으며 (p<0.05), 영양보충 투여군은 혈청 transferrin, 혈청 iron, 총 임파구수가 기간이 경과에 따라 유의적으로 증가하였다(p<0.05). 이상의 결과로 볼 때, 경관급식 환자들에 대해 경관급식기간을 고려하고, 식이처방 및 유동식의 종류에 적합한 튜브를 선택해야하며, 적절한 투여용량을 결정하는 등 투여방법과 투여경로에 대한 보다 많은 연구가 필요하다고 본다. 특히 경관급식 초기단계에는 질병으로 인한 체내 신진대사의 증가나 육체적, 정신적 스트레스, 또는 구토나 설사 등의 부적응 등으로 적절한 영양섭취가 어려운 상태이므로 영양판정을 통하여 영양소 요구량을 계획하여 유동식을 보급함으로서 부작용은 줄이며 적절한 영양을 공급하여 영양 결핍에 대처하여야 한다.

• 대한지역사회영양학회지
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• 제2권1호
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• pp.63-73
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• 1997

This study was performed to assess the effect of one year's of meal service for home-staying urban elderly with low incole on their nutritional status. One hundred and eighty three subjects, who had already completed the first nutritional survey, were assigned to two group : meal served(served) and non-meal served(non-served). A meal containing approximately on half of the RDA for energy, protein, calcium and iron was served as lunch everyday to served group. After on year of meal service, follow-up-nutritional survey was done and changes of parameters were analyzed with paired t-test. Served female showed signficantly increased intake of riboflavin and calcium, while non-served female showed significantly decreased intake of calcium. Serum total protein, serum albumin and serum cholesterol were significantly increased in female regardless of meal service. Served remale was observed with significantly elevated LDL-cholesterol, whereas non-served female showed singnificantly lowered HDL-cholesterol. Significantly decreased serum iron, serum transferrin saturaion and significantly increased TIBC were observed for female regardless of meal service. But the proportion of anemic elderly according to Hb or serum iron was decreased more in served group. Female showed significantly increased serum zinc and copper regardless of meal service, whereas only served male showed significantly increased serum copper.

• 대한지역사회영양학회지
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• 제8권5호
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• pp.726-735
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• 2003

In this study, anthropometric and biochemical indicators and related factors for community dwelling elderly living alone (ELA). as well as for elderly not living alone (ENLA) were explored. The subjects were 140 elderly females (70 living alone, 70 not living alone) residing in Bucheon. Anthropometric measurements revealed significant differences between the two groups (ELA/ENLA) for height, weight, BMI, triceps skinfold thickness, suprailiac skinfold thickness, subscapular skinfold thickness, and body fat percentage. The ELA showed significantly lower data for most of the anthropometric indices, except PIBW. Biochemical indicators of iron status (hemoglobin, serum iron, transferrin saturation) were significantly lower for the ELA, whereas the total serum cholesterol, LDL-C, LDL-C/HDL-C, for the ELA were significantly higher. The prevalence of hypercholesterolemia (240 mg%) was 30%. The latter three are not in accordance with general malnutrition among the ELA. The hemoglobin of the ELA was positively correlated with energy, fat, iron and cholesterol intake, but negatively correlated with height. The serum cholesterol of the ELA was Positively associated with most of their nutrient intake.

• 대한지역사회영양학회지
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• 제4권2호
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• pp.139-148
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• 1999

This study was designed to assess the iron nutritional status of girls at puberty in Kangnung area. The subjects consisted of 161 adolescents in sixth-grade in primary school and first-grade in middle school girls. Anthropometric measurements were taken for body weight, height, percentage of body fat, and circumferences of waist and hip. Nutrient intakes were assessed by modified 24-hour recall method. Food models and other measuring tools were also used. Fasting blood samples were obtained and analyzed for hemoglobin(Hb) concentration, hematocrit(Hct), serum iron(FE) and total iron binding capacity(TIBC). Mean values for Hb, Hct, Fe, TIBC, TS and serum ferritin were $13.6{\pm}0.9g/dl$, $39.6{\pm}3.9%, 91.3{\pm}36.3{\mu}g/dl$, $327.9{\pm}45.2{\mu}g/dl$, $28.3{\pm}11.8%$ and $37.4{\pm}24.2ng/ml$, respectively. Prevalence of iron deficiency greatly varied by indices from 4.8% when judged by Hb to 18.4% by serum Fe concentration. The Hb concentration was positively correlated with Hct(r=0.641), serum iron(r=0.266) and transferrin saturation(r=0.237)(p<0.05). On the other hand, serum ferritin concentration showed significantly negative correlation with TIBC(r=-0.572). Mean daily intake of iron was 14.94mg and heme iron intake was 1.13mg and which was 7.6% of total iron intake. Total absorbable iron calculated by the method of Mosen was 1.38mg and bioavailability of dietary iron was 9.3%. These results suggest that the prevalence of iron deficiency of pubertal girls is very high, therefore the guidelines for diet and social supports, such as, school food service system should be provided to improve their iron status in middle school students.

• Archives of Pharmacal Research
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• 제20권4호
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• pp.297-305
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• 1997

A new serum-free defined medium was developed that supports the growth of normal rat mammary epithelial cells. Mammary organoids from the glands of female F344 rats were cultured in a serum-free medium. Monolayer culture colonies developed within a week and remained viable for months in culture. Upon subculture of one-week-old primary colonies, almost the same morphology of colonies was developed. The scrape loading/dye transfer technique showed that most of colonies that developed in a serum-free medium containing EGF, human transferrin, insulin, and hydrocortisone (basal serum-free medium, BSFM) failed to show cell-cell communication. However, colonies cultured in BSFM supplemented with prolactin, $E_2$, and progesterone (complete hormone serum-free medium, CHSFM) showed cell-cell communication at 14 days of primary culture or of subculture. By flow cytometry with FITCPNA and PE-anti-Thy-1.1 monoclonal antibody, we distinguished four RMEC subpopulations in cultures in both media: Thy-1.1+ cells, PNA+ cells, cells negative to both reagents and cells positive to both reagents. It is likely that combined prolactin, cortisol, and insulin in CHSFM stimulate terminal differentiation of clonogenic cells.

• Clinical and Experimental Pediatrics
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• 제45권3호
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• pp.362-369
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• 2002

목 적 : 빈혈은 아직도 전세계적으로 가장 흔히 볼 수 있는 영양결핍으로 특히 청소년기 여아에 많이 발생하는데, 그 원인은 철분의 불충분한 섭취, 빠른 성장에 따른 철분 필요량 증가 및 월경으로 인한 혈액 손실을 들 수 있다. 본 연구는 건강하게 보이는 중학생 및 고교의 여학생에 있어서 지난 10년간에 걸친 빈혈 및 철분에 관한 영양상태의 발표를 종합하였다. 방 법: 1990년 대구지역에서 도시와 농촌의 여학생에 대해, 1997년 부천지역 여학생에 대해, 1999년 울산지역에서 도시와 농촌지역 여학생에 대해, 2000년 인천에서 도시와 농촌의 여학생에 대해 혈액학적 조사와 신체 계측 그리고 설문지를 통한 조사가 이루어졌다. 빈혈은 혈색소 11.5 g/dL 미만으로 정의하였다. 철 결핍은 혈청 ferritin이 10 ng/mL 미만인 경우로 정의하였고, IDA는 혈색소가 최저 기준치 이하이면서 MCV 78 fL 미만, ferritin 10 ng/mL 미만, 또는 transferrin 포화도 10% 미만인 경우로 정의하였다. 결 과 : 1) 도시와 농촌간의 혈색소 평균치에는 유의할 만한 차이가 없었고, 연령이 증가함에 따라 평균 혈색소의 감소를 볼 수 있었다. 2) 전체적인 빈혈의 유병율은 1990년 13.4%, 1997년 6.9%, 1999년 6.0%, 2000년 5.7%로 감소하는 소견을 보이고 있고, 각각의 조사에서는 연령이 증가함에 따라 유병율도 증가하였다. 특히 여고생에서의 빈혈의 유병율은 1997년 10.1%, 2000년 12.6%로 높게 나타났다. 3) 철 결핍 유병율은 1990년 36.1%에 비해 1997년과 1999년은 13.9%, 13.3%로 감소하는 소견을 보이나 2000년 연구에서는 23.2%로 증가되었다. 4) 연도별 IDA의 유병율은 1990년에는 10.0%, 1997년 4.6%, 1999년 8.3%, 2000년 6.1%로 일정 하지는 않으나 감소하는 소견을 보이고 있고, 연령이 증가하면서 유병율이 증가하는 것을 볼 수 있다. 결 론 : 중, 고교 여학생에 있어서 10년 전에 비하여 철분 영양은 개선되었지만, 농촌과 도시에 관계없이 빈혈 및 철 결핍이 빈발하였고, 청소년기 연령이 올라갈수록 더욱 현저하였다. 더욱이 최근의 다이어트 풍조와 영양섭취의 불균형을 고려할 때, 다른 영양소의 부족 역시 우려할만한 것으로 사료된다. 따라서 중학교 3학년 이상의 여학생과 빈혈의 위험군에 대해서는 선별검사가 요구되며, 아울러 지속적이며 효과적인 영양 교육과 철분지표와 영양지식에 대한 평가가 필요할 것으로 사료된다.

• 대한수의학회지
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• 제36권3호
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• pp.551-563
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• 1996

This study investigated the properties of primary cultured proximal tubule cells in hormonally defined(insulin, transferrin, and hydrocortisone), serum-free medium or 10% serum-supplemented medium. The growth rate of the primary cultured proximal tubule cells was lower in the hormonally defined, serum-free medium than in the 10% serum- supplemented medium(p < 0.05), while the activities of brush border marker enzymes, alkaline phosphatase(AP), leucine aminopeptidase(LAP), and y-glutamyl transpeptidase(${\gamma}$-GTP) were increased(p < 0.05). The activities of these enzymes, however, decreased with the lapse of incubation time to 50-70% after 6 days culture compared to those of the freshly-prepared proximal tubules. The enzymatic activities of the primary cultured proximal tubul cells on 6, 9, 12, and 15 days of culture were significantly increased in the hormonally defined, serum-free medium compared to the 10% serum-supplemented medium(p < 0.05). The functional differentiation of the primary culture was examined by observing multicellular domes of the confluent monolayer, which is indicative of transepithelial solute transport. The dome formation by the proximal tubule cultures occurred at a higher frequency in the hormonally defined, serum-free medium than in the 10% serum-supplemented medium(p < 0.05). Upon electron microscopic examination, an increased density of the brush border was observed in the hormonally defined, serum-free medium compared to the cells grown in 10% serum-supplemented medium. The activities of $Na^+$glucose cotransporter($^{14}C$-a-MG uptake), $Na^+$phosphate cotransportere($^{32}P$ uptake) and $Na^+$ transporter($^{22}Na^+$ uptake) in the brush border membrane, and of $Na^+/K^+$-ATPase($^{86}Rb$ uptake) in the basolateral membrane were significantly stimulated in the hormonally defined, serum-free medium than in 10% serum-supplemented medium(p < 0.05). In conclusion, the primary cultured proximal tubule cells grown in the hormonally defined, serum-free medium demonstrated a slower growth rate, but the functions of cell were enhanced.

• Journal of Nutrition and Health
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• 제35권2호
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• pp.223-228
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• 2002

The purpose of this study was to investigate the relationship between iron deficiency without anemia and physical performance in healthy women aged 20-21 yrs. Ten subjects with normal iron stores (serum ferritin $\geq$ 12$\mu\textrm{g}$/L: iron-sufficient group) and 11 subjects with iron depletion without anemia (serum ferritin < 12 $\mu\textrm{g}$/L and serum hemoglobin > 120 g/L: iron-depleted group) were chosen from a group of 50 women and were given physical-performance tests, including determinations of maximum oxygen consumption (VO$_2$ max) and ventilatory threshold. Iron status assessment included determination of hemoglobin, hematocrit, seam ferritin, total iron-binding rapacity, serum iron and transferrin saturation values. Dietary iron intake was assessed based on seven-day food intake records written by the subjects. Physical activity level was estimated by frequency questionnaires and two-week physical activity records were compiled daily by the subjects. Blood ferritin concentration was significantly lower in the iron-depleted group than in the iron-sufficient group (p < 0.05). However, other variables showing iron status was not different between the groups. There were no significant differences in body size, body composition and physical activity levels between the groups. Daily dietary iron, total protein and animal protein intakes of the iron-sufficient group were significantly higher than those of the iron depleted group. However, no differences were found in the amount of dietary vitamin C and fiber between the groups. The values for VO$_2$max and VO$_2$max corrected with weight or fat-free mass were not different between the groups. However, the ventilatory threshold was significantly higher in the iron sufficient group than in the iron-depleted group. The lower ventilatory threshold in the iron-depleted group suggests that iron depletion without anemia could diminish aerobic physical performance in young women. In addition, a significant correlation of physical performance to serum fferritin level was shown only in the iron depleted group.

• KSBB Journal
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• 제16권3호
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• pp.274-280
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• 2001

본 연구에서는 레트로바이러스 생산 세포인 CRIP/LacZ 세포의 배양시에 혈청의 역할을 대체 할 수 있는 여러 첨가불을 선정하고 그 농도를 정하는 실험올 수행하여, 레트로바이러 스 생산을 워한 무혈청 배지를 개발하였다. 그 결과 DMEM 을 기본배지로 하고 insulin, transfenin, BSA, EGF and linoleic acid를 포함한 무혈청 배지를 개발하였다. 이를 충전 층 연속배양기흘 이용한 레트로바이러스의 연속생산 실험에 본 결과 $6-7\times10^4 cfu/ml$서 수율을 가진 레트로바이러스를 약 8일간 생산할 수 있었다. 충전층 연속반응기에서도 T -flask와 같이 온도의 영향이 매우 중요하였고 $32^{circ}C$, 에서 가 장 높은 수율회 레트로바이러스를 생산할 수 있었다. 이는 레트로바이러스외 온도에 따흔 비활성속도가 바이러스 생산 수율에 매우 큰 영향음 마칩을 시사해 주논 결과이다. 또한 충전층 배양기에서 무혈청배지를 이용한 세포배양 시에는 무혈청배지 첨가물로 서1포 부착 물짚에 대한 연구가 필요하다고 생각된다.

• Reproductive and Developmental Biology
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• 제34권3호
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• pp.207-211
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• 2010

Current developments in IVF and animal cloning have resulted in increasing demand for large quantities of oocytes and ovarian follicles at specific stages of development. These medical and scientific needs may be met by developing an optimal culture system for preantral follicles. In this study, we investigated the growth of porcine preantral follicle cultures in different media and in the presence and absence of serum. Follicles were manually dissected from ovaries obtained from prepubertal gilts at a local slaughterhouse, and cultured for 3 days in M199 or NCSU23 medium supplemented with porcine FSH, transferrin, L-ascorbic acid and insulin. Follicle diameters were measured on day 1 and 3 of culture. In Experiment 1, the effect of supplementing culture medium with fetal calf serum (FCS) on porcine preantral follicle growth was examined. In the group of cultures supplemented with FCS, follicle diameter after 3 days of culture, survival rate and antrum formation rate in the FCS group were significantly higher than those of the control group. In Experiment 2, the effects of culture medium (M199 and NCSU23) on follicle growth were compared. Follicle diameters were increased in the M199 group, compared with those in NCSU23 (p<0.05), but we observed no significant differences in survival and antrum formation rates between cultures grown in the two media. In conclusion, supplementation of the culture medium with serum enhances preantral follicle growth and antrum formation, and M199 is superior to NUSU23 for porcine preantral follicle culture in vitro.