• Title/Summary/Keyword: Calcium

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The Relationship of Serum Calcium and Magnesium Levels to Depression and Anxiety Symptoms in Homemarkers (주부들의 심리적 자작 증세와 혈청칼슘 및 마그네슘 농도와의 관련성)

  • 박귀선
    • Journal of Nutrition and Health
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    • v.31 no.1
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    • pp.102-107
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    • 1998
  • This study was conducted to investigate the relationship of serum calcium and magnesium levels to depression and anxiety symptoms in 80 homemarker. Fasting blood samples were collected and serum calcium and magnesium concentrations were measured. At the same time, psychological conditions of subjects were estimated by questionnaire. As the result of psychological test, eighty homemarkers were divided into two groups according to psychologicaltest scores. The subjects in one group got high pssycholgoical test scores as high score group (HSG) and the others got low physchological test scores as low score group(LSG). Serum calcium and magnesium concentrations were significantly(p<0.05) lower in HSG than in HSG than in LSG. Many a subject who belonged to HSG appeared to have depression and anxiety symptoms. Drepression and anxiety scores of the subjects with calcium supplementation were significantly (p<0.05) lower than those without calcium supplementation . After calcium supplementation, depressiion and anxiety scores were significantly (p<0.05) decreased in HSG and serum calcium and magnesium concentrations in HSG were significantly increased to normal ranges . This results suggested that psychological conditions of homemarkers might be affected by serum calcium and magnesium levels.

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Effects of Milks by various Heat Treatment on Growth and Protein and Calcium Metabolism of Rats (우유의 열처리 정도가 흰쥐가 성장, 단백질 및 칼슘 대사에 미치는 영향)

  • 이정아
    • Journal of Nutrition and Health
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    • v.28 no.2
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    • pp.144-151
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    • 1995
  • This study investigates the supplementing effects of milks by various heat treatment on growth performance and protein and calcium metabolism of rats. For 4 weeks, raw, LTLT-HTST-and UHT-processed milks were given to rats which fed on a calcium free, semi-synthetic diet containing 5%casein. There were no significant differences among the experimental groups in weight gain, feed efficiency ratio and the serum level of total protein and calcium. Also, no significant differences were showed in protein efficiency, nitrogen balance, apparent protein digestibiltiy and the contents of weight and calcium of the left femur as well as 2 incisors. However, the biological value of protein in the UHT-milk group was significantly higher than that of the raw-milk group. The apparent calcium digestibility and calcium balance in the UHT-milk group were higher than those in the raw-, LTLT- and HTST-milk groups. The weight of left femur in all the groups supplemented with various heat-treated milks was significantly impair the nutritive value of protein and calcium in milk. Futhermore, UHT-processing may improve the bioavailability of protein and calcium in milk.

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Effect of Calcium Entry Blockers on the Calcium Transport in the Isolated Sarcolemmal membrane from the Porcine Small Intestine (돼지 소장 평활근 세포막에서의 Calcium 이동에 미치는 Calcium entry blockers 의 영향)

  • Seok, Jeong-Ho;Lim, Jong-Ho;Lee, Jae-Heun
    • The Korean Journal of Pharmacology
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    • v.22 no.2
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    • pp.151-156
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    • 1986
  • There are some evidence for the presence of more than one type of calcium channels. To investigate whether organic calcium antagonist sensitive calcium channels exist in the isolated sarcolemmal membrane, we prepared high KCl-loaded sarcolemmal vesicle from the procine small instine, and induced calcium transport by high $K^+$ concentration or by electrical stimulation after preincubation of KCl-loaded vesicle in the low potassium solution. Calcium transport induced by high $K^+$ concentration (84.7mM) was significantly increased (p<0.05), compared with that by low $K^+$ concentration (2.08 mM), and not inhibited by diltiazem $(10^{-6}\;M)$. Calcium transport was inactivated with time. By continuous electrical stimulation (3V, 15Hz, 25m see), calcium transport was markedly increased, and inhibited significantly by dilltiazem $(10^{-6}\;M)$ and nifedipine $(10^{-6}\;M)$ (p<0.005), compared with the value of control without electrical stimulation. Calcium transport by electrical stimulation was not inactivated with time for at least 2 min. From these results, it was concluded that there was organic calcium antagonist sensitive channel in the isolated intestinal sarcolemma membrane, which was activated by electrical stimulation.

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Effect of Coagulants on the Quality of Soybean Curd Added With Cow's Milk (응고제가 우유 첨가 두부의 품질에 미치는 영향)

  • Kim, Tae-Young;Kim, Joong-Man;Cho, Nam-Jun
    • Applied Biological Chemistry
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    • v.37 no.5
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    • pp.370-378
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    • 1994
  • Soybean curd added with 40% of cow’s milk was prepared with eight coagulants such as calcium acetate, calcium lactate, calcium chloride, calcium sulfate, magnesium chloride, glucono-delta lactone (GDL), acetic acid and lactic acid. The curd products were evaluated by the chemical composition, coprecipitation porperties, mineral content, yield, color and textural characteristics. The lowest concentrations for protein coprepitation were 0.3% (v/v) for calcium salts, 0.4% (v/v) for magnesium chloride, 0.2% (v/v) for organic acids. Turbidity and crude protein of whey were markedly decreased at these concentrations. The optimal concentrations of coagualnts used for soybean curd preperation were 1.2% (v/v) for calcium acetate, calcium sulfate and calcium lactate, 1.0% (v/v) for calcium chloride and GDL, 0.8% (v/v) for magnesium chloride and lactic acid, 0.6% (v/v) for acetic acid. It was observed that of the eight coagulants tested, calcium chloride provided a satisfactory curd in quality. Calcium content of soybean curds by the calcium salt coagulants was higher than that by organic acid coagulants. Through the examination on the textural properties by a texturemeter was found out that acetic acid treated soybean curd among the organic acids, calcium salts and magnesium chloride treated curds had very high hardness value. All the curd products prepared in this experiment had a pale yellow color as affected by the value of L (lightness), a (redness) and b (yellowness). Although the colorimetric readings showed that the soybean curds prepared with the organic acids had higher L value but lower a and b value in comparison to calcium salts and magnesium chloride treated curds.

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Effects of Calcium Intake on Lipid Contents and Enzyme Activity in Rats of Different Ages (연령이 다른 흰쥐에 있어 칼슘이 섭취수준이 체내 지질함량과 효소활성에 미치는 영향)

  • 최미경
    • Journal of the East Asian Society of Dietary Life
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    • v.8 no.1
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    • pp.9-19
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    • 1998
  • The purpose of this study was to investigate the effect of calcium intake on lipid contents and enzyme activities in rats of different ages. Lipid levels in serum and liver and GOT, CPK and LDH activities in serum were compared in rats of different ages(4 weeks and 10 months) that were fed various levels of calcium(50, 100, 200% of requirement)for 3 weeks. Body weight gain and feed efficiency ratio were significantly higher in young rats than in adults. Serum calcium level was increased by elevation of calcium intake levels were decreased. Liver phospholipid and triglyceride levels in the high-cal-terol and triglyceride levels were decreased. Liver phospholipid and triglyceride levels in the high calcium group were significantly lower than those in other groups. Serum GOT and LDH activities of adults were significantly higher in low-calcium group than those in adequate/high-calcium groups. However, serum CPK activity of adults was significantly higher in high-calcium group than that in low/adequate-calcium groups. The results of this study suggest that adequate calcium intake may have protective effects ont he alteration of lipid and enzyme activity in rats.

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Women's Calcium Intake during Late Pregnancy and Breastfeeding (일 지역 여성의 임신기와 수유기 칼슘섭취 양상)

  • Ahn, Suk-Hee;Kim, Jin-Hee
    • Journal of muscle and joint health
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    • v.18 no.1
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    • pp.63-72
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    • 2011
  • Purpose: The purpose of the study was to identify the amount of calcium intake during late pregnancy and breastfeeding and compare the differences in the amount of calcium by subjects' characteristics. Methods: With a descriptive survey design, 121 Korean breastfeeding women were recruited in a community setting. The list of foods and drinks with calcium extracted from the study of Song and So (2007) was used to measure the amount of calcium intake during pregnancy and lactation. The subjects' characteristics were collected to identify differences in the amount of calcium intake. Results: Mean age of the women was 31 years old. Amount of calcium intake was 568mg per day during late pregnancy and 431mg per day during breastfeeding. These amounts were quite lower than a recommended dose that adult women should consume a daily minimum of 1,000mg of calcium. Women who had higher household income and attending experience for nutritional education took more calcium during breastfeeding and late pregnancy, respectively. Conclusion: More than a half of the breast-feeding women do not consume the recommended dose of calcium. Education for proper calcium consumption during pregnancy and lactation should be an additional subject in the prenatal and breastfeeding education program for women's bone health.

Differentiation of Canine Calcium Oxalate and Canine Struvite Stones using Computed Tomography (개에서 전산화단층촬영을 이용한 Calcium Oxalate결석과 Struvite결석의 감별)

  • Yoon, Young-Min;Lee, Hee-Chun
    • Journal of Veterinary Clinics
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    • v.32 no.1
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    • pp.69-72
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    • 2015
  • This study was performed to differentiate calcium oxalate and struvite canine urinary stones using computed tomography. A total of 38 urinary stones (8 calcium oxalate and 30 struvite) were scanned using a computed tomography scanner. These urinary stones (10-15 mm diameter) extracted surgically without fragmentation were obtained from the different individual patients. The stone's Hounsfield units(HU) values, heterogenicity, and roughness of surface were evaluated to differentiate calcium oxalate and struvite. The HU values of calcium oxalate were significantly higher than those of struvite. A receiver operator characteristic (ROC) curve revealed 1272 as the best threshold value to distinguish calcium oxalate from struvite (ROC curve AUC 0.87, p < 0.0014). The heterogenicity of calcium oxalate and struvite significantly differed on bone and dental window setting (p < 0.0001). There was no significant difference between calcium oxalate and struvite in roughness of surface. On computed tomographic images, bone and dental windows setting were useful for evaluation of heterogenicity between calcium oxalate and struvite. The HU value and heterogenicity are highly promising factor that can distinguish calcium oxalate and struvite with reasonable accuracy.

Influence of soft drinks supplemented calcium to enamel remineralization (칼슘보강음료가 법랑질 재광화 효과에 미치는 영향)

  • Kim, Min-Young;Lee, Hye-Jin
    • Journal of Korean society of Dental Hygiene
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    • v.8 no.3
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    • pp.13-22
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    • 2008
  • Objectives: The purpose of this study was to identify the correlation between calcium in soft drinks and enamel remineralization. Method: Six soft drinks were used in this study. These were calcium milk, normal milk, calcium yoghurt, normal yoghurt, calcium orange juice, and orange juice. Enamel specimens which 300- 400Vickers Hardness Number (VHN) were selected. These samples were immersed in each soft drink for 12 hours in an in vitro remineralization model. All specimens were processed for SEM image of the enamel surface. Results were analyzed by SPSS 13.0 package program. Results: Calcium milk was the most influential and normal yoghurt was the least to enamel surface. There was not significant difference according to calcium supplement in milk although the difference of enamel hardness was ${\Delta}f13.4$ in calcium milk, and ${\Delta}f4.7$ in normal milk (P>0.05). Other soft drinks showed a little change about calcium but they were insignificant. Demineralization effect was remarkably observed in calcium yoghurt ($-{\Delta}f269.1$) and this effect was confirmed by SEM images. In conclusion, calcium supplemented soft drinks had little influences to hardness of enamel surface.

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Effects of Organic Acids on Solubility of Calcium (칼슘용해에 미치는 유기산의 영향)

  • Jang, Se-Young;Park, Nan-Young;Jeong, Yong-Jin
    • Korean Journal of Food Preservation
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    • v.12 no.5
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    • pp.501-506
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    • 2005
  • This study was conducted to investigate the effect of organic acids on solubility of calcium. As a results, acetic and lactic acid showed the most excellent solubility of calcium. Calcium solubility was increased at initial total acid (4%) in citric acid but calcium was insoluble in tartaric acid. After solving, pH and residuals were decreased where as total acidity and calcium content were increased as increment of initial acidity of acetic and lactic acid. Calcium content in seaweed calcium and calcium carbonate were higher than that of nano calcium. Solubility of calcium was more conspicuous at lactic acid than acetic acid.

Effect of Extracellular Calcium on Vitellogenin Production in the Culture of Hepatocytes in the Rainbow Trout, Oncorhynchus mykiss

  • Yeo In-Kyu;Mugiya Yasuo;Chang Young Jin;Hur Sung Bum;Yoo Sung Kyu
    • Fisheries and Aquatic Sciences
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    • v.1 no.1
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    • pp.24-29
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    • 1998
  • Effect of extracellular calcium in vitellogenin (VTG) production in response to estradiol-17 $\beta$ $(E_2,\;2\times10^{-6}M)$ was examined in primary hepatocyte culture of rainbow trout, Onchorhynchus mykiss. Total calcium in estrogenized sera significantly increased, compared with the control, while diffusible calcium was insignificant. However, diffusible calcium in the incubation medium with $E_2$ was significantly reduced, compared with the control. The uptake of extracellular calcium by cultured hepatocytes signifIcantly increased 90 min after $E_2$ addition. Moreover, the accumulation of intracellular calcium increased in the cultures with $E_2$, regardless of the calcium concentrations in the incubation media. In addition, $E_2-primed $ VTG production was significantly decreased by withdrawal of E_2$ from the incubation medium. Moreover, VTG production by $E_2-primed$ hepatocytes was reduced by removing calcium from the incubation medium with or without $E_2$. These results suggest that the entry of extracellular calcium into the cytoplasm is an important step for VTG production in primary hepatocyte cultures in rainbow trout.

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