• Title/Summary/Keyword: ovariectomized rats

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The Efficacy of Cynomorii Herba and Eucommiae Cortex on Treatment of Osteoporosis in Ovariectomized Rats (쇄양(鎖陽)과 두중(杜仲)이 골다공증 유발 후 흰쥐의 골밀도와 체중에 미치는 영향)

  • Choi, Hong-Sik
    • The Korea Journal of Herbology
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    • v.23 no.2
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    • pp.19-24
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    • 2008
  • Objectives : The present study had been undertaken to investigate the effects of Cynomorii Herba and Eucommiae Cortex on treatment of osteoporosis in ovariectomized rats. Methods : In this experiment, the rats of experimental groups were ovariectomized. Rats of medicinal groups were administered by water extracts of Cynomorii Herba or Eucommiae Cortex. The levels of bone mineral density and body weight were measured. Results : The levels of spinal bone mineral density was significantly increased in comparison with OVX group at 8 weeks after medication in Cynomorii Herba group. The levels of femoral and fibula-tibial bone mineral density were not significantly increased in comparison with OVX group after medication in Cynomorii Herba and Eucommiae Cortex group. The levels of body weight were not significantly decreased in comparison with OVX group after medication in Cynomorii Herba and Eucommiae Cortex group. Conclusions : Reviewing these experimetal results, it appears that Cynomorii Herba have efficacy on treatment of osteoporosis. And further study should be conducted to illustrate in depth the curing and prevention of osteoporosis.

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Effects of Cheonggukjang and Doenjang on Bone Loss in Ovariectomized Rats

  • Lee, Chang-Hyun;Song, Geun-Seoup;Kim, Young-Soo
    • Food Science and Biotechnology
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    • v.17 no.3
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    • pp.553-557
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    • 2008
  • The effects of cheonggukjang and doenjang on bone mineral density, trabecular area and cortical thickness of the tibia, and serum osteocalcin level in ovariectomized rats were investigated. After 4 weeks, bone mineral density, bone trabecular area, the cortical thickness index, and serum osteocalcin level were analyzed. The cheonggukjang and doenjang diet groups showed significant prevention of ovariectomized (OVX)-related body weight gain. Whole body bone mineral density of the OVX group was significantly lower than that of the sham group, whereas the cheonggulgang and doenjang diets resulted in complete restoration of bone mineral density. Trabecular area in the proximal diaphysis and cortical thickness in the distal diaphysis of the tibia were increased significantly in the cheonggukjang and doenjang diet fed groups. The cheonggukjang and doenjang diets significantly reduced serum osteocalcin level in the OVX rats. These results suggest that cheonggukjang and doenjang might have inhibitory effects on osteoporosis, by showing accelerated bone formation in OVX rats.

A regulatory effect of Cervi Cornu Parvum aqua-acupuncture on serum estradiol level after ovariectomy (녹용약침(鹿茸藥鍼)이 난소절제(卵巢切除) 흰쥐의 혈청(血淸) estradiol 함량(含量)에 미치는영향(影響))

  • Kwak Dong-Uk;Yang Chae-Ha
    • Journal of Acupuncture Research
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    • v.15 no.2
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    • pp.29-41
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    • 1998
  • The effect of Cervi Cornu Parvum aqua-acupuncture on serum levels of sex hormone was investigated in ovariectomized rats. Water extract of Cervi Cornu Parvum was daily injected for 30 days at points in rats corresponding to bilateral Taixi (Ki. 3) points of human and non-point at root of tail after ovariectomy, respectively. Serum levels of estradiol, testosterone, progesterone, LH and FSH were measured at 2 and 4 weeks after aqua-acupuncture treatment, respectively. Compared with ovariectomized rats, significant increase of estradiol and progesterone and significant decrease of FSH and LH were elicited at 2 and 4 weeks after aqua-acupuncture treatment. Aqua-acupuncture treatment at non-point did not produce any remarkable effect. These findings suggest aqua-acupuncture may restore dysfunction of hypothalamic-pituitary-ovarian axis, associated with a significant increase of serum estradiol level in ovariectomized rats.

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A Efficacy of Trigonellae Semen On Treatment of Osteporosis In Ovariectomized Rats (호로파(胡蘆巴)가 골다공증(骨多孔症) 흰쥐의 골밀도와 체중에 미치는 영향)

  • Seo, Bu-Il
    • The Korea Journal of Herbology
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    • v.21 no.3
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    • pp.97-102
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    • 2006
  • Objectives : The present study had been undertaken to investigate the effects of Trigonellae Semen on treatment of osteoporosis in ovariectomized rats. Methods : In this experiment, the rats were ovariectomized. Rats were administered by water extracts of Trigonellae Semen. The levels of bone mineral density and body weight were measured. Results : The levels of spinal bone mineral density was significantly increased in comparison with OVX group at 4 and 8 weeks after medication in Trigonellae Semen group. The levels of femoral and fibula-tibial bone mineral density were significantly increased in comparison with OVX group at 4 weeks after medication in Trigonellae Semen group. The levels of body weight was significantly increased in comparison with OVX group at 4 weeks after medication in Trigonellae Semen group. Conclusion : Reviewing these experimetal results, it appears that Trigonellae Semen have efficacy on treatment of osteeoporosis. And further study should be conducted to illustrate in depth the curing and prevention of osteoporosis.

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Effect of Germinated Seed of Rhynchosia Volubilis on Interleukin-6 in Ovariectomized Rats (발아(發芽)한 서목태(鼠目太)가 난소적출 흰쥐의 Interleukin-6에 미치는 영향)

  • Jung Ho-Long;Cha Yun-Yeou
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.19 no.5
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    • pp.1261-1266
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    • 2005
  • The aim of this study is to find out what inhibition effects the Germinated Seed of Rhynchosia Volubilis(GSRV) has by its feeding period on the bone absorption in ovariectomized white rats. Close examination of the amounts of the Interleukin-6 in the rats by the groups of one, two and three-day germination periods led to the following conclusions. Feeding ovariectomized white rats with GSRV by the groups of one, two and three-day germination periods showed less amounts of Interleukin-6 in their bone marrow in all the feeding periods of two, three and four weeks than in the case of control group, revealing a statistical significance. Therefore, the Germinated Seed of Rhynchosia Volubilis(GSRV) is believed to have inhibition effects on bone resorption.

Antiosteoporotic activity of ‘Dae-Bo-Won-Chun’ in the ovariectomized rats

  • Chae, Han-Jung;Kang, Jang-Sook;Kim, Jong-Hwan;Kim, Chul-Won;Yoo, Sim-Keun;Choi, Bom;Kim, Hyung-Min;Shin, Tae-Yong;Kim, Hyung-Ryong
    • Advances in Traditional Medicine
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    • v.1 no.1
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    • pp.97-106
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    • 2000
  • The preventive effect of herbal formulation, ‘Dae-Bo-Won-Chun’(DBWC), on the progress of bone loss induced by ovariectomy (OVX) was studied in rats. From light microseopic analyses, a porous or erosive appearances were observed on the surface of trabecular bone of tibia in ovariectomized rats. Whereas those of the same bone in sham rats were composed of fine particles. The trabecular bone area and trabecular thickness in ovariectomized rats decreased by 50% from those in sham-operated rats, these decreases were completely inhibited by administration of DBWC at concentration of 10mg/kg per day for 7 weeks. The mechanical strength in femur neck was decreased by ovariectomy, and this was significantly suppressed by the administration of DBWC. Serum phosphorus, alkaline phosphatase, and thyroxine levels in ovariectomized rats were increased compared to those in sham-operated rats, and increases were completely inhibited by the administration of DBWC. These results strongly suggest that DBWC is effective in preventing the development of bone loss induced by ovariectomy in rats.

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Change of Apoptotosis on Isoplavone Diet and Regular Exercise in Aorta of Ovariectomized Rats (난소절제 흰쥐의 대동맥에서 이소플라본 섭취와 규칙적 운동에 따른 Apoptosis의 변화)

  • Lee, Jin;Cho, Hyun Sook
    • Korean Journal of Exercise Nutrition
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    • v.13 no.2
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    • pp.109-113
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    • 2009
  • The objective of this study was to compare the effects of a combined treatment consisting of an isoflavone diet and aerobic exercise on the Caspase 9 levels, and Bcl-2 levels during menopause, using 30 S.D ovariectomized rats as a model, over 12 weeks. The ovariectomized rats were divided into 4 experiment groups, with 8 rats in each group, as follows: (1) General diet group (GD, n=8), (2) Isoflavone diet group (ID, n=8), (3) General diet + Exercise group (GEX, n=8), (4) Isoflavone diet + Exercise group (IEX, n=8). The findings of this study were as follows: 1. Combined treatment consisting of an isoflavone diet and regular exercise resulted in a significant reduction in the expression of caspase-9 proteins (p<0.05), and a significant increase in the expression of Bcl-2 proteins (P<0.001). In addition, apoptotic cells were more decreased (p<0.001) in GEX and IEX group. This also suggests that cardiovascular disease in postmenopausal women might be prevented or inhibited to exert positive apoptotic inhibitory effects by increasing Bcl-2 protein expression within aortic tissues during vascular movement and decrease caspase-9 protein.

Studies on the Cyclic AMP Concentration and Uterine Tissue Differentiation During the Early Pregnancy of Rats (초기 임신기간중 흰쥐의 자궁조직 분화와 Cyclic AMP 농도에 관하여)

  • Kim, Sung-Rye;Ryu, Kyung-Za;Cho, Wan-Kyoo
    • Clinical and Experimental Reproductive Medicine
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    • v.11 no.2
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    • pp.41-49
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    • 1984
  • It has been well known that ovarian steroids, estradiol and progesterone play an important role in the endometrial preparation for the implantation process. The present investigation was undertaken to correlate function of ovarian steroids with cAMP concentrations in uterine tissues of rat during the various stages of the preimplantation period. Rats ovariectomized on day 2 were treated with estradiol or/and progesterone on day 3 or on day 4 and cAMP concentrations in uterine tissues were determined by competitive protein - binding assay in control - and steroid treated - ovariectomized rats. The results obtained are as follows; 1. In control rats, cAMP concentrations in uterine tissues were decreased with preimplantation period proceeded whereas cAMP concentrations were increased and showed the highest levels on day 6 in ovariectomized rats. 2. In rats treated with progesterone only or progesterone with estradiol after ovariectomy, cAMP concentrations on day 6 were lower than those of ovariectomized control but higher than those of intact control rats while estradiol only treatment decreased cAMP concentrations on day 3 and day 6, compared with those from intact- and ovariectomized-controls. It is, therefore, concluded that the concentrations of cAMP in uterine tissues were lower in estrogen-treated rats than in ovariectomized rats, suggesting the involvement of cAMP in the regulation of uterine tissue differentiation.

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Effects of LY-117018 and Tamoxifen on Reproductive Organ in Rats (흰쥐에 있어서 LY-117018 및 Tamoxifen이 생식기관에 미치는 영향)

  • Park, Kyoung-Sik;Kwun, Jong-Kuk
    • Clinical and Experimental Reproductive Medicine
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    • v.14 no.1
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    • pp.61-70
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    • 1987
  • This study was carried out to investigate the effects of the antiestrogens, LY-117018 and tamoxifen on reproductive organ of ovariectomized immature rats and also to elucidate the mechanism of action of said compounds by bioassay. Each of LY-117018, tamoxifen and estradiol-17${\beta}$ was administered to ovariectomized immature rats at various dose levels. Forty hours after drug administration, tested rats were sacrificed and uterine wet weight, DNA and RNA contents in uterine and liver tissues were investigated. At the same time, uterine wet weight was also investigated with some other rats treated with 125${\mu}g$ of LY-117018 together with increasing doses of tamoxifen. Ovariectomized immature rats given 25${\mu}g$ single dose of each drug were sacrificed on Day 1, 2, 3, 4, and 5 after drug administration and uterine was weighed to estimate the duration of action of LY-117018 and tamoxifen. The results were summarized as follows: 1. The administration of LY-117018 or tamoxifen to ovariectomized rats increased uterine wet weight and DNA and RNA contents in uterine tissues with more increase in tamoxifen groups, but significant differences between groups treated at dose levels of 5${\beta}$ or more of both drugs were observed. Estradiol-17${\beta}$ groups showed significant increases in each group(P<0.01). 2. The administration of LY-117018 or tamoxifen to each group significantly increased DNA and RNA contents in liver tissues with more increase in tamoxifen groups. Estradiol-17${\beta}$ groups showed no significant differences between treatment groups of 5${\beta}$ or more. 3. Treatment with 125${\beta}$ of LY-117018 together with various doses of tamoxifen resulted in more increase of uterine wet weight than treatment with a single dose of LY-117018 or tamoxifen. 4. Treatment with 0.2${\beta}$ of LY-117018 or tamoxifen in ovariectomized rats decreased uterine wet weight,DNA and RNA contents in liver and uterine tissues compared with ovariectomized control. 5. The duration of effective action of LY-1l7018 and tamoxifen was 4 days or more. 6. There was significant difference(P<0.001) in uterine wet weight between Day 9after ovariectomy (two days after LY-117018 or tamoxifen treatment) and Day 10(63.7${\pm}$3.5mg, 39.2${\pm}$9.9mg, respectively).

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