• Title/Summary/Keyword: Osteoporosis, postmenopausal

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The Effect of Soy Isoflavone Supplementation on Urinary Isoflavone Excretion in Korean Postmenopausal Women (폐경 후 여성에서 이소플라본 공급에 따른 소변 중 이소플라본 배설량 변화에 관한 연구)

  • 승정자
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.31 no.6
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    • pp.1043-1047
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    • 2002
  • It is well known that soy isoflavones play beneficial roles in the prevention of chronic diseases such as breast cancer, cardiovascular disease and osteoporosis. However current data are not sufficient for estimating the level of isoflavone intake. To use the urinary isoflavone excretion as a maker of isoflavone intake,26 participants consumed the isoflavone extract capsule (90 mg soy isoplavones/capsule) daily for 3 months. The study compared effects of pre- and post-isoflavone supplement in the following parameters; physical examination, dietary recalls, and urinary isoflavon excretion. The average age, height and weight were 65.7 years, 149.4 cm, and 57.3 kg. Subjects maintained regular diet pattern, and average daily nutrient intakes between pre- and post- supplementation were not significantly different except vitamin A, carotene and vitamin C. There was no significant difference between pre- and post- supplementation in terms of daily isoflavone intake. The basal urinary isoflavone excretion was 8.37 mg/day (daidzein 6.23 mu genistein 2.14 mg), and average daily excretion rate was IS.8%. Urinary isoflavone excretion was significantly increased, after isoflavone supplementation for 3 months as compared the basal level (p<0.01). Our data suggest that urinary isoflavone level, especially daidzein and genistein, may be a useful maker to estimate isoflavone intake.

The Effect of Ecklonia cava Extracts on Bone Turnover Markers in Ovariectomized Rats (갱년기 유도 흰쥐에서 감태 추출물이 골 대사 지표물질의 변화에 미치는 영향)

  • Kang, Sung-Rim;Kim, Mi-Hyang
    • Journal of Life Science
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    • v.19 no.12
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    • pp.1841-1846
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    • 2009
  • Menopause is often associated with the incidence of several chronic diseases including osteoporosis, cardiovascular disease, and obesity. Hormone replacement therapy (HRT) is an effective regimen that has been found to prevent these diseases in postmenopausal women. However, HRT is accompanied by an increased risk of unfavorable outcomes. Therefore, this study was conducted to evaluate the effects of Ecklonia cava, a kind of seaweed, extract on bone turnover markers in symptomatic menopausal women. For this study, the following four groups of 9-week-old Sprague-Dawley rats were evaluated over 6 weeks: normal rats (SHAM), ovariectomized rats (OVX-CON) and ovariectomized rats that were treated with Ecklonia cava extracts. The optimum extraction temperature and solvent of Ecklonia cava were found to be $80^{\circ}C$ and 80% ethanol. We measured the osteocalcin and CTx content, enzyme ALP activity in serum and collagen content in the cartilage, bone, skin and lungs. We found that the levels of indicators of bone metabolism such as ALP, osteocalcin and CTx were lower in rats in the Ecklonia cava extract group than the OVX-CON group. In addition, the collagen contents in the bone, cartilage, skin and lungs decreased in response to ovariectomy, but the levels of collagen were greater in the bone of rats that were treated with Ecklonia cava extract than in the bone of rats in the OVX-CON group. According to these results, we were able to know the effects of Ecklonia cava extract on bone aging in ovariectomized rats. Consequently, we expect Ecklonia cava extract to have an effect on bone aging in postmenopausal women.

Effect of Platycodon Grandiflorum A. Extract in Bone Metabolism in Ovariectomized Rats (난소 절제한 흰쥐에서 도라지 추출물이 골 대사에 미치는 영향)

  • Kim, Mi-Hyang
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.22 no.1
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    • pp.183-188
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    • 2008
  • Osteoporosis is one of the major health problem affecting postmenopausal women. Estrogen deficiency results in an increase in bone turnover, lead to bone resorption and an increase risk of fracture. The aim of this study was to evaluate the effects of Platycodon grandiflorum A. extract (PG) in bone metabolism in ovariectomized estrogen-deficient rats. Two groups were surgically ovariectomized (OVX). The third group was sham operated. Sprague-Dawley female rats were randomly assigned to the following groups : sham-operated rats (Sham), ovariectomized control rats (OVX-control), ovariectomized rats supplemented with PG at 50mg/kg body wt (OVX-PG50) The Platycodon grandiflorum extracts were orally administrated at 1mL per day. The ovariectomy caused a decreasing in the levels of collagen content in bone, cartilage and skin tissues. However PG group, supplementation with Platycodon grandiflorum extract, were increased the level of collagen content in bone, cartilage and skin tissues than OVX-control group. PG group had a higher content of pyridinoline in collagen than OVX-control group. Alkaline phosphatase activity on serum were decreased after supplemented with the PG extract. These results might be expected that Platycodon grandiflorum is believed to be possible protective effects in postmenopausal bone loss.

The Relationship Between Lumbar Spine Bone Mineral Density and Cardiovascular Risk Factors in Premenopausal and Postmenopausal Women (폐경 전후 여성의 요추 골밀도와 심혈관 위험인자와의 연관성)

  • Kim, Mi-Young
    • Journal of radiological science and technology
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    • v.30 no.4
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    • pp.365-371
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    • 2007
  • Recent studies suggest a possible pathogenic linkage between the osteoporosis and atherosclerosis. We investigated the relationship between cardiovascular risk factors, including high sensitivity C-reactive (hs-CRP), hs-CRP and bone metabolism in females. Anthropometric measurements were performed on 300 women, and cardiovascular risk factors, including fasting blood glucose, lipid profiles and hs-CRP. An atherogenic index was calculated using the serum total cholesterol level divided by the high-density lipoprotein cholesterol level. The lumbar spine bone mineral density was measured using dual X-ray abosorptiometry. By bivariate analysis, the lumbar spine BMD showed negative correlations with age, systolic and diastolic blood pressures, serum total cholesterol, high-density lipoprotein cholesterol. The Age, BMI and high-density lipoprotein cholesterol showed significant correlations with the lumbar spine BMD. From linear regression analyses of all the study subjects, age, high-density lipoprotein cholesterol were found to be determinants of the lumbar spine BMD($R^2=0.272$).

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A Clinical Study of Bee Venom Acupuncture Therapy on Shoulder Pain Patients in Stroke Sequelae (중풍후견증(中風後遣症)으로 인한 견비통(肩譬痛) 환자(患者)의 봉약침치료(蜂藥鍼治療)에 대한 임상적(臨床的) 고찰(考察))

  • Lee, Dae-Yong;Yeom, Seung-Chul;Kim, Do-Ho;Kim, Dae-Joong;Lee, Geon-Mok
    • Journal of Acupuncture Research
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    • v.23 no.4
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    • pp.69-80
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    • 2006
  • Objectives : The occurrence of shoulder pain after attack of stroke varies from 15% to about 80% in patients. Hemiplegic shoulder pain has been shown to affect stroke outcome in a negative way that it interferes with recovery after a stroke. These following processes have been all postulated as causes of a shoulder pain: glenohumeral subluxation, spasticity, impingement, soft tissue trauma, glenohumeral capsulitis, shoulder hand syndrome. And stroke patients may suffer from pain caused by stroke itself(central post-stroke pain). The aim of this study is to investigate the effectiveness of Bee venom therapy for shoulder pain in stroke patients. Methods : To evaluate the effectiveness of Bee Venom Acupuncture Therapy, 40 patients were allocated into control and treatment group. They were monitored for 3 weeks and followed up with VAS score(with the interval of Initial(YAS1)), 1 week later(VAS2), 2 weeks later(VAS3), 3 weeks later(VAS4), Motor Grade and Passive ROM. Results : VAS score decrease in treatment group compared to control group. Bee Venom Acupuncture Therapy seems to decrease hemiplegic shoulder pain and this effect was statistically significant after 3 weeks. Therefore this therapy could be recommended for the treatment of patients with shoulder pain after stroke and further extensive clinical studies are expected. Conclusion : We suggest that GDS oral administration and electro-acupuncture at $BL_{52}$ & $GB_{39}$ are available for prevention and curing about the postmenopausal osteoporosis.

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Bisphosphonate Related Osteonecrosis of Jaw on Mandibular Molar Area: a Case Report (하악 구치부에 발생한 Bisphosphonate Related Osteonecrosis of Jaw의 치험례)

  • Park, Jae-An;Yoon, Kyu-Ho;Cheong, Jeong-Kwon;Bae, Jung-Ho;You, Kyung-Ha;Jo, Kyu-Hong;Shin, Jae-Myung;Baik, Jee-Seon
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.32 no.5
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    • pp.478-483
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    • 2010
  • Bisphosphonates are synthetic analogue and have high affinity on bone remodeling site. Since they have a long half-reduction time, they accumulate at bone and act for a long time. They are widely used in osteo-porosis derived from imflammatory bowel disease or postmenopausal osteoporosis patient for bone mineral density improvement. In addition, they neutralize hypercalcemia owing to bone metastasis of malignancy. However, a jaw bone necrosis was recently reported in some patients who have taken bisphosphonates for a long time. It is called Bisphosphonate Related Osteonecrosis of Jaws (BRONJ). It can come spontaneous-ly, but more often after oral surgery including tooth extraction. In this case, a 80-year-old woman was treated with bisphosphonate (sodium alendronate) for 2 years to improve bone mineral density. She had her left lower second molar tooth extracted at local clinic. After extraction, she had inflammatory symptoms like a pain, a cheek swelling, and a discharge of pus. She was referred to our clinic for treatment. We treated meticulously from dressing to surgery. After following up about 1.5 years, the jaw lesion was successfully healed. So we report this case.

Fermented soybeans by Rhizopus oligosporus reduce femoral bone loss in ovariectomized rats

  • Yoo, Hyun-Wook;Chang, Moon-Jeong;Kim, Sun-Hee
    • Nutrition Research and Practice
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    • v.8 no.5
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    • pp.539-543
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    • 2014
  • BACKGROUND/OBJECTIVES: Soy isoflavones are structurally similar to estrogen and bind to estrogen receptors, suggesting that they exhibit estrogenic activities; therefore, they are referred to as phytoestrogens. Fermentation may affect the bioavailability of isoflavones altering soy isoflavone glycosides in the form of aglycones. Thus, this study investigated the effects of fermented soybeans by Rhizopus oligosporus on bone metabolism in both young rats as a pilot test and in ovariectomized (ovx) old rats as a model of menopause. MATERIALS/METHODS: In the pilot test, a total of 24 seven-week-old female Sprague-Dawley (SD) rats were fed one of three diets for a period of four weeks: casein, unfermented soybean product, or fermented soybean product by R. oligosporus. In the ovx rat model, 20-week-old SD rats weighing 260-290 g underwent either sham-operation (n = 10) or bilateral ovariectomy (n = 30) and were then fed the AIN-93M diet for one week. Thereafter, rats were fed sham-casein, ovx-casein, ovx-soybean, or ovx-fermented soybean diet for five weeks. After decapitation, femoral bones were isolated and preserved in 9% formalin for assessment of bone mineral density (BMD), bone mineral content (BMC), and bone-breaking strength (BBS). RESULTS: Ovx rats showed significantly increased weight gain and decreased uterine wet weight. Of particular interest, ovx rats fed fermented soybeans showed increased uterine wet weights compared to control rats. Fermented soybean diet caused a significant increase in plasma 17-${\beta}$ estradiol concentrations in young rats, and 17-${\beta}$ estradiol levels were enhanced in ovx rats to match those of sham-operated ones. Significantly lower femoral BMD and BMC were observed in ovx rats compared to sham-operated controls, whereas bone areas did not differ statistically among the groups. In addition, BBS tended to be increased in ovx rats fed soybeans and fermented soybeans. CONCLUSIONS: Supplementation of fermented soybeans could have preventive and therapeutic effects against osteoporosis in postmenopausal women.

Effects of Soy Protein and Isoflavones on Bone Markers and Hormones in Growing Male Rats (콩 단백질과 Isoflavones가 성장기 수컷 흰쥐에서 골 지표와 호르몬에 미치는 영향)

  • 최미자
    • Journal of Nutrition and Health
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    • v.36 no.5
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    • pp.452-458
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    • 2003
  • Soybean is a rich source of isoflavones such as genistein and daidzein. Soy isoflavones have both weak estrogenic and anti-estrogenic effects and are structurally similar to tamoxifen, an agent that has an effect similar to that of estrogen in terms of reducing postmenopausal bone loss. The purpose of this study was to determine the effects of differences in protein source (casein vs soy) and isoflavone levels (reduced vs higher levels) on selected bone markers and hormones in growing male rats. Thirty weanling Sprague-Dawley young rats were divided into 3 groups: The control group was fed a casein-based diet, the soy concentrate group was fed soy protein with totally reduced isoflavones content (isoflavones 0.07 mg/g protein), and the soy isolate group was fed soy protein with a higher than normal isoflavones content (isoflavones 3.4 mg/g protein). The degree of bone formation was estimated by measuring serum osteocalcin and alkaline phosphoatase (ALP). By determining collagen cross-linkage by immunoassay and correcting with creatinine values, the bone resorption rate was compared. Serum osteocalcin, growth hormone, estrogen and calcitonin were analyzed using radio immunoassay kits. The bone formation marker and ALP activity were differentiated by protein source, showing higher values than casein in feeding either soy isolate or soy concentrate. In this study using growing rats, the differences in isoflavone contents were not a significant factor in either bone formation or bone reaborption markers. Moreover, the soy isolate group had significantly higher levels of growth hormone than the casein group. The findings of this study suggest that growth hormone is partially responsible for its bone-formation effects in young growing rats. Soy protein and the isoflavones in soy protein are beneficial for bone-formation in growing male rats. Therefore, exposure to soy protein and isoflavones early in life may have long-term health benefits in preventing bone diseases such as osteoporosis. Further study to evaluate the mechanism of action of isoflavones on bones is warranted. (Korean J Nutrition 36(5): 452∼458, 2003)

The Effect of Dietary Calcium Level on Biochemical Variables of Bone Metabolism in Ovariectomized Female Rats (식이 칼슘량이 난소 절제한 흰쥐에서 골대사 지료에 미치는 영향)

  • 최미자
    • Journal of the East Asian Society of Dietary Life
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    • v.6 no.3
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    • pp.295-305
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    • 1996
  • This study was done to evaluate the effectiveness of dietary calcium level(a diet which met 100% or twice the calcium level in AIN-76 diet) on preventing bone loss in ovariectomized rats. Forty female Sprauge-Dawley rats(body weight 200$\pm$5g) were divided into two groups. One group were ovariectomized(Ovx) while the others received sham operation(Sham). Thereafter, each rat group was further divided into normal calcium diet(NCD, 0.52%) and high calcium diet(HCD, 1.04%) sub-groups. All rats were fed on experimental diet and deionized water ad libitum for 8 weeks. Urinary pyridinoline & creatinine and serum estradiol, luteinizing hormone, calcium, phosphate, total protein, albumin, alkaline phosphatase and osteocalcin were determined. There were no significant differences in serum calcium. total protein and albumin in the two groups(Ovx vs Sham) of rats. Ovariectomized rats had significantly lower estradiol than sham operated rats. There was a highly significant correlation between total bone mineral density(TBMD) and overall level of esteradiol(r=0.59, p<0.05). Total bone mineral density did not correlate significantly with ALP or osteocalcin, although a negative trend was evident. However, the rats fed high calcium diet had a lower crosslinks value and osteocalcine than the rats fed normal calcium diet. An increased rate of bone turnover is usually associated with a decrease in bone mass bexause bone formation at each remodeling site is never as great as resorption. Ovariectomized rats fed high calcium diet had a lower crosslink value and osteocalcin; it means high cacium diet decreased bone turnover rate. The findings from the present study demonstrated that bone loss due to ovarian hormonal deficiency can be partially prevented by a high calcium diet. Futhermore, these findings support the strategy of the use of a high calcium diet in the prevention of estrogen depletion bone loss (postmenopausal osteoporosis).

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The Effects of Estrogen Replacement Therapy on Blood Pressure, Heart Rate Variability, and Climacteric Symptoms in Postmenopausal Women (에스트로젠 호르몬 대치요법이 혈압, 심박동변이, 갱년기증상에 미치는 효과)

  • Lee, Hae-Kyung
    • Women's Health Nursing
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    • v.8 no.2
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    • pp.151-164
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    • 2002
  • PURPOSE: Estrogen replacement therapy is indicated for the relief of hot flushes and urogenital atrophy, the prevention of osteoporosis and the reduction in risk of cardiovascular disease. The present study assessed by blood pressure, heart rate variability, and climacteric symptoms in menopausal women before treatment and at 1 month during estrogen replacement therapy. METHODS: The study sample consisted of 16 healthy menopausal women (range 49 to 59 years, mean : 53.4 years) attending menopausal clinics for the complaint of climateric symptoms at S. hospital in Chunchoen. They were all non-smokers and no patient had symptoms or evidence of cardiovascular disease. They took estrogen replacement therapy (conjugated estrogen 0.625 mg with or without medroxy progesteron 2.5mg) for 1 month. Blood pressure, heart rate variability(heart period and vagal tone) through ECG, and climacteric symptom were measured in all subjects before treatment and at 1 month during treatment. Climacteric symptom questionnaire which was developed by Neugarten et al.(1963) was modified with 20 items of question(Cronbach's alpha = 88 -.89). The data was collected from Sept. 1. 2000 to July. 30. 2001. RESULTS: There was no significant difference in mean systolic and diastolic pressure between the baseline and at 1 month during treatment. The mean heart period and vagal tone were slightly increased, but difference of mean heart period and vagal tone were not statistically significant between the baseline and at 1 month during treatment. The score of climacteric symptoms decreased significantly from the baseline after treatment. CONCLUSIONS: Even though, this study did not show that estrogen replacement therapy led decrease of blood pressure and increase heart rate variability, climacteric symptoms reduced much in all subjects after taking drugs. These results suggest that there is need to repeat study with long term period.

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