• 대한수의학회지
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• 제41권3호
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• pp.275-279
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• 2001

The classification of bony pieces which were excavated from Jongdali archaeological site in Jeju was studied. The total number of bone remains were 81 pieces, in which 31 pieces were classified into animal bones. The animal species consisted of Cervus spp., Sus scrofa, Bos taurus and Equus caballus. This finding suggests that the major fauna in this peroid(B.C. 100 - A.D. 100) is wild boar, deer, horse and cattle.

• Journal of Nutrition and Health
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• 제37권2호
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• pp.100-107
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• 2004

This study was performed to evaluate the effect of dietary protein source and sulfur amino acid content on bone metabolism in ra. Thirty male rats (body weight 145$\pm$2g) were divided into three groups. The rats in the first group were fed on casein 20% diet as animal protein source and those in the second group were fed on soy 20% diet as plant protein source. Sulfur amino acid ratio of these group was 1.07:1. The rats in the third group were fed on soy 20% diet and the sulfur amino acid were supplemented with the amount contained as much in the soy 20% diet. All rats were fed on experimental diet and deionized water ad libitum for 9 weeks, The total body, spine, femur bone mineral density and bone mineral content were measured using Dual Energy X-ray Absorptiometry Calcium, phosphate, pyridinoline, creatinine in urine and calcium, phosphate, alkaline phosphatase, osteocalcin in serum were measured. During the experimental period, plant protein (soy protein) group had a lower urinary Ca excretion, urine pyridinoline ＆ crosslinks value and had a higher Ca efficiency in total bone and femur bone mineral density than animal protein (casein) group. There were no significant differences in serum calcium, phosphate, alkaline phosphatase and osteocalcin among the three groups of the rats. The findings from this study demonstrated that plant protein (soy protein) is beneficial of bone mineral density because it had a higher Ca efficiency in total bone and femur bone mineral density than animal protein (casein). However, the supplementation of sulfur amino acid on soy results were consistent with prior studies that dietary sulfur amino acid load had a negative effect on calcium balance. The rats fed sulfur amino acid supplementation diet increased urinary calcium excretion and decreased calcium efficiency for total and femur mineral density. Therefore, dietary protein source and sulfur amino acid content influence bone metabolism. (Korean J Nutrition 37(2): 100-107, 2004)

• 한국수정란이식학회지
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• 제30권3호
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• pp.201-206
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• 2015

본 연구는 방사선 조사 후, 난소 적출을 한 흰쥐에 있어서 골회복과정 중에 셀레늄(Se)에 의한 보호 작용을 평가한 연구이다. 목적 수행을 위해 난소 적출술을 실시한 암컷 Sprague-Dawley계 흰쥐 80마리를 무작위로 ovariectomized(Ov), Ov/Se, Ov/irradiated(Irr) 그리고 Ov/Se/Irr와 같이 4개의 처리군으로 구분하였다. 골 결손은 난소적출(ovariectomy) 후, 40일에 모든 공시동물의 경골(tibia)에서 만들어졌다. 수술 후, 48시간에 Ov/Se군과 Ov/Se/Irr 처리구의 흰쥐에만 0.8 mg Se/kg을 투여하였다. 수술 후, 72시간에 Ov/Irr 군과 Ov/Se/Irr 처리구의 흰쥐에만 10Gy의 X-rays 조사를 사지부위(limb region)에 실시하였다. 수술 후, 모든 공시동물은 7, 15, 22 그리고 29일에 안락사를 시키고, 섬유주골형(trabecular bone)의 개수 분석(Masson Trichrome) 과 복 굴절 분석(Picrosirius)에 의해서 골 회복과정을 평가하였다. 난소적출한 군 및 방사선 조사한 군에서 골 재생 과정이 지연되는 현상을 확인이 가능하였다. 결론적으로, 셀렌산염 (sodium selenite)은 독성 없이 난소 적출을 한 흰쥐의 경골(tibia)의 골 재생과정에서 방사선 보호작용을 할 가능성을 제시하였다.

• Asian-Australasian Journal of Animal Sciences
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• 제18권4호
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• pp.516-523
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• 2005

The experiment was conducted to study the effect of dietary combinations of vitamin A (VA), vitamin E (VE) and methionine (Met) on growth performance, meat quality and immunity in commercial broilers. Ross chicks (n=3,630) were allocated to five experimental treatments with three replicates per diet. The dietary treatments were: VA 8,000 IU, VE 10 IU (diet 1); VA 12,000 IU, VE 10 IU (diet 2); VA 8,000 IU, VE 100 IU (diet 3); VA 12,000 IU, VE 100 IU (diet 4) and; VA 12,000 IU, VE 100 IU/kg diet and 20% Met higher than other groups (diet 5). The Met content in diet 1 to diet 4 were as per the requirement suggested by NRC. Separate vitamin premixes were prepared for each treatment diet as per the requirement of study. The 35 d study revealed significantly (p<0.0001) higher weight gains in broilers fed diet 3 and diet 5, than in the rest of the groups during starter phase (0-3 weeks) only. The feed intake did not vary significantly at all phases of study, but feed efficiency was significantly (p<0.05) lower in diet 1 during starter and overall phase (4-5 weeks). The bone strength and bone composition, except bone calcium, remained unaffected due to experimental diets studied after 35 d of experimental feeding. The thio-barbituric acid reactive substances (TBARS) were significantly (p=0.0013) lower in the breast meat in group 5, followed by group 3, than in the rest of the groups. The immune studies conducted, antibody titers to sheep red blood cells, thickness index to phytohaemagglutinin-P, and heterophil: lymphocyte ratio, did not show any significant difference among treatments. It could be concluded that supplementation of VA, VE and Met at higher levels could be beneficial to broilers only during the starter phase.

• Journal of Nutrition and Health
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• 제33권3호
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• pp.241-249
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• 2000

The bone mineral density(vertebrae Ll-4, femoral neck, Ward's triangle and trochanter) of 160 healthy adult women aged 29-45 was measured and general characteristics, anthropomentric measurements, and dietary intake were also studied to determine the main factors affecting the bone mineral density(BMD) of adult women. The nutrient intake of the subjects was adequate to RDA level except energy, Ca, Fe, and vit A. The BMD of vertebrae L24 showed significant positive association with nutrient intake such as animal protein, P, Ca(animal) and Fe(animal). The BMD of the femoral neck correlated significantly with anthropometric measurements such as height, weight, waist circumference, hip circumference, body fat and body mass index. The BMD of both sites(vertebrae L24 and femoral neck) were significantly related to vertebrae L24 was daily Ca intake and that of femoral neck was daily energy expenditure. In conclusion, adequate nutrient intake, especially protein, P, Ca and Fe as well as increases in physical activity were suggested to prevent the loss of bone mineral density in adult women.

• Journal of Dairy Science and Biotechnology
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• 제34권3호
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• pp.157-164
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• 2016

Osteoporosis is a systemic skeletal disease characterized by decreased bone mass, which results in a markedly increased risk of traumatic fractures. This disease is a worldwide health problem with a high prevalence. Recently, various dietary components have been found to minimize the risk of developing osteoporosis through their ability to stimulate bone formation and optimize bone health. Among them, probiotics and fermented milk can have beneficial effects to human health. Bioactive compounds derived from probiotics in fermented milk can especially modulate physiological functions related to bone health. Here, we review the evidence to support these insights into newly found functionality of dairy foods for osteoporosis prevention.

• Asian-Australasian Journal of Animal Sciences
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• 제27권12호
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• pp.1783-1793
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• 2014

Capsaicin is a major constituent of hot chili peppers that influences lipid metabolism in animals. In this study, we explored the effects of capsaicin on adipogenic differentiation of bovine bone marrow mesenchymal stem cells (BMSCs) in a dose- and time-dependent manner. The BMSCs were treated with various concentrations of capsaicin (0, 0.1, 1, 5, and $10{\mu}M$) for 2, 4, and 6 days. Capsaicin suppressed fat deposition significantly during adipogenic differentiation. Peroxisome proliferator-activated receptor gamma, cytosine-cytosine-adenosine-adenosine-thymidine/enhancer binding protein alpha, fatty acid binding protein 4, and stearoyl-CoA desaturase expression decreased after capsaicin treatment. We showed that the number of apoptotic cells increased in dose- and time-dependent manners. Furthermore, we found that capsaicin increased the expression levels of apoptotic genes, such as B-cell lymphoma 2-associated X protein and caspase 3. Overall, capsaicin inhibits fat deposition by triggering apoptosis.

• 대한의용생체공학회:의공학회지
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• 제27권4호
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• pp.189-196
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• 2006

Micro computed tomography (micro-CT) has been used for in vivo animal study owing to its noninvasive and high spatial resolution capability. However, the sizes of existing detectors for micro-CT systems are too small to obtain whole-body images of a small animal object with $\sim$10 micron resolution and a part of its bones or other organs should be extracted. So, we have introduced the zoom-in micro-tomography technique which can obtain high-resolution images of a local region of an live animal object without extracting samples. In order to verify our zoom-in technique, we performed in vivo animal bone study. We prepared some SD (Sprague-Dawley) rats for making osteoporosis models. They were divided into control and ovariectomized groups. Again, the ovariectomized group is divided into two groups fed with normal food and with calcium-free food. And we took 3D tomographic images of their femurs with 20 micron resolution using our zoom-in tomography technique and observed the bone changes for 12 weeks. We selected ROI (region of interest) of a femur image and applied 2D FDT (fuzzy distance transform) to measure the trabecular bone thickness. The measured results showed obvious bone changes and big differences between control and ovariectomized groups. However, we found that the reliability of the measurement depended on the selection of ROI in a bone image for thickness calculation. So, we extended the method to 3D FDT technique. We selected 3D VOI (volume of interest) in the obtained 3D tomographic images and applied 3D FDT algorithm. The results showed that the 3D technique could give more accurate and reliable measurement.

• 한국축산식품학회지
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• 제35권4호
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• pp.431-440
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• 2015

Chicken bone is not adequately utilized despite its high nutritional value and protein content. Although not a common raw material, chicken bone can be used in many different ways besides manufacturing of collagen products. In this study, a multi-step procedure was optimized to isolate chicken bone collagen for higher yield and quality for manufacture of collagen products. The chemical composition of chicken bone was 2.9% nitrogen corresponding to about 15.6% protein, 9.5% fat, 14.7% mineral and 57.5% moisture. The lowest amount of protein loss was aimed along with the separation of the highest amount of visible impurities, non-collagen proteins, minerals and fats. Treatments under optimum conditions removed 57.1% of fats and 87.5% of minerals with respect to their initial concentrations. Meanwhile, 18.6% of protein and 14.9% of hydroxyproline were lost, suggesting that a selective separation of non-collagen components and isolation of collagen were achieved. A significant part of impurities were selectively removed and over 80% of the original collagen was preserved during the treatments.

• 한국임상수의학회:학술대회논문집
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• 한국임상수의학회 2009년도 추계학술대회
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• pp.248-248
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• 2009