• Journal of Acupuncture Research
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• v.18 no.6
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• pp.188-205
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• 2001

Objective : The purpose of this studies was to determine the effect of Carthami semen, Bogol-Tang and Rhynchosia volubilis Lour. on changes of trabecular area and physiological metabolites in the ovariectomized osteoporotic Rats. Methods : In order to induce estrogen deficient osteoporosis, ovariectomy was done on rats. Then the Carthami semen, Bogol-Tang and Rhynchosia volubilis Lour. were orally administerd: Such indexes were measured as the changes of body weight, bone mineral density, trabecular area in tibia, and levels of osteocalcin, bone alkaline phosphatase, calcium, phosphorus, cholesterol, triglyceride, aspartate aminotransferase and alanine aminotransferase in serum. Results : 1. The change of bone mineral density in Bogol-Tang group and Rhynchosia volubilis lour. group. was significantly increased compare to control group. 2. The change of trabecular area % in epiphysis of tibia in Carthami semen group was significantly increased compare to control group. 3. The change of trabecular area % in diaphysis of tibia in Bogol-Tang group was significantly increased compare to control group. 4. The change of serum osteocalcin in Bogol-Tang group was significantly decreased compare to control group. 5. The change of serum bone alkaline phosphatase in Bogol-Tang group was significantly decreased compare to control group. 5. The change of serum bone alkaline phosphatase in Bogol-Tang group was significantly decreased compare to control group. 6. The change of1 serum calcium in Rhynchosia volubilis lour. group was significantly decreased compare to control group. 7. The change of phosphorus in Carthami semen group and Rhynchosia volubilis Lour. group was significantly decreased compare to control group. 8. The change of serum cholesterol and triglyceride of experimental groups were decreased in comparison with control group. 9. The change of serum AST(Aspartate aminotransferase : GOT) in Rhynchosia volubilis Lour. group was decreased compare to control group. 10. The change of serum ALT(Alanine aminotransferase : GPT) in Bogol-Tang group was decreased compare to control group.

• International Journal of Oral Biology
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• v.40 no.1
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• pp.1-9
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• 2015

Osteocalcin (OC) is the most abundant noncollagenous protein of extracellular matrix in the bone. In an OC deficient mouse, bone formation rates are increased in cancellous and cortical bones. OC is known as a negative regulator of mineral apposition. OC is also expressed in the tooth of the rat, bovine, and human. However, little is known about OC during tooth development in Xenopus. The purpose of this study is to compare the expression of OC with mineralization in the developing tooth of Xenopus, by using von Kossa staining and in situ hybridization. At stage 56, the developmental stage of tooth germ corresponds to the cap stage, and an acellular zone was apparent between the dental papilla and the enamel organ. From stage 57, calcium deposition was revealed by von Kossa staining prior to OC expression, and the differentiated odontoblasts forming predentin were located at adjoining predentin. At stage 58, OC transcripts were detected in the differentiated odontoblasts. At stage 66, OC mRNA was expressed in the odontoblasts, which was aligned in a single layer at the periphery of the pulp. These findings suggest that OC may play a role in mineralization and odontogenesis of tooth development in Xenopus.

• Archives of Pharmacal Research
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• v.26 no.11
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• pp.917-924
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• 2003

This research aims to test a new drug candidate based on a traditional medicinal herb, F1, an herbal extract obtained from Astragalus membranaceus and its main ingredient, 1-monolinolein that may have fewer side effects and less uterine hypertrophy. In vitro experiments, human osteoblast-like cell lines, MG-63 and Saos-2, were analyzed by 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) and an alkaline phosphatase (ALP) assays. Mouse osteoclasts were induced through a calcium-deficient diet and inhibition effects were measured. In vivo experiments were done using ovariectomized (OVX) rats for 9 weeks. At necropsy, uterus weights were measured, trabecular bone area (TBA) of tibia and lumbar vertebra were measured bone histomorphology. In results, cell proliferation and ALP activity in Saos-2 by ether F1 or 1-monolinolein did not increased significantly compared to the control. The F1 inhibited osteoclast development ($IC_{25}=3.37{\times}10^{-5}$mg/mL) less than 17$\beta$-estradiol. The OVX rats administered F1 (2 mg/kg/day and 10 mg/kg/day) showed an increase in TBA of the tibia significantly (136.3${\pm}4.2% and 138.5{\pm}$10.3% of control). In conclusions, the herbal extract, F1 inhibited tibia and lumbar bone loss and did not cause uterine hypertrophy. However, 1-monolinolein, the main ingredient of the herbal extract, did not inhibit bone loss.

• Journal of Life Science
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• v.17 no.7 s.87
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• pp.931-936
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• 2007

The aim of this study was to evaluate the effects of Codium Fragile(CF) extract on the collagen content and collagen cross-link content of the connective tissues, alkaline phosphatase activity and calcium levels of serum in ovariectomized estrogen-deficient rats. Three groups were surgically ovariectomized. The fourth group was sham operated. Sprague-Dawley female rats were randomly assigned to the following groups : sham-oper-ated rats(Sham), ovariectomized control rats (OVX-CON), ovariectomized rats supplemented with CF at 50 mg/kg body wt and 200 mg/kg body wt, respectively The CF were orally administrated at 1mLa day. The ovariectomy caused a decreasing in collagen content in bone, cartilage, skin and lung tissues. However CF groups, supplementation with Codium Fragile extract, increased in collagen contentin bone and cartilage tissues than OVX-CON group. Fyridinoline content in cartilage collagen was de-creased by ovariectomy but supplementation with the CF extracts was similarly increased to Sham. Alkaline phosphatase activity on serum of CF groups decreased than OVX-CON group. These results suggest that CF supplementation prevents post-menopausal bone loss, thus it may be used possibly to improve the quality of life in menopausal women.

• Journal of the Korean Society of Food Science and Nutrition
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• v.35 no.3
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• pp.255-261
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• 2006

This study was Conducted to investigate the effect of ${\gamma}-PGA\;({\gamma}-poly\;glutamic\;acid)$ on Ca absorption and bone metabolism in rats. Weaned 4-week old male rats were fed Ca-deficient diets for 3 weeks after the adjustment period. Rats were divided into 6 groups and were fed experimental diets for four weeks. Experimental groups were basal (Ca deficient), control (Ca diet: Ca 0.45%), CP1(Ca 0.45%+casein phosphopeptide 1%), PG1(Ca 0.45%+gamma poly glutamic acid 1%), CPG (Ca 0.45%+casein phosphopeptide 1%+gamma poly glutamic acid 1%) and PG3(Ca 0.45%+gamma poly glutamic acid 3%). Though daily Ca intake and food intake of experimental groups showed no significant difference that of control group. The values of fecal Ca excretion and urinary Ca excretion in groups fed ${\gamma}-PGA$ were significantly lower than that in tile control group. The values of Ca absorption in groups fed ${\gamma}-PGA$ were significantly higher than that in the control group. The levels of femur Ca in ${\gamma}-PGA$ supplemented group were significantly increased compared to the control group. Also, breaking force of femur in ${\gamma}-PGA$ supplemented group showed about 40% increase compared to the control group. These results show that ${\gamma}-PGA$ supplement could be helpful to increase Ca absorption as well as to intensify the femur strength and to increase the Ca content of femur in rats.

• The Korean Journal of Pharmacology
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• v.17 no.1 s.28
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• pp.17-25
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• 1981

No evidence has accumulated that lead compound is an essential component for biological function in animals. Lead is absorbed primarily through the epithelial mucosal cells in duodenum and the absorption can be enhanced by the substances which bind lead and increase its solubility. Iron, zinc and calcium ions, however, decrease the absorption of lead without affecting its solubility, probably by competing for shared absorptive receptors in the intestinal mucosa. Therefore, the absorption of lead is increased in iron deficient animals. Lead shows a strong affinity for ligands such as phosphate, cysteinyl and histidyl side chains of proteins, pterins and porphyrins. Hence lead can act on various active sites of enzymes, inhibiting the enzymes which has functional sulfhydryl groups. lead inhibits the activity of ${\delta}$-aminolevulinic acid dehydratase for the biosynthesis of hemoproteins and cytochrome, which catalyzed the synthesis of monopyrrole prophobilinogen from ${\delta}$-aminolevulinic acid. Accordingly lead decrease hepatic cytochrome p-450 content, resulting an inhibition of the activity of demethylase and hydroxylase in liver. Little informations are available on the effect of lead on digestive system although the catastrophic effects of lead intoxication are well documented. The present study was, therefore, attempted to investigate the effect of lead on pancreaticobiliary secretion in rats. Albino rats of both sexes weighing $170{\sim}230g$ were used for this study. The animals were divided into one control and three treated groups, i.e., control (physiologic saline 1.5ml/kg i.p.), lead acetate $(l0{\mu}mole/kg/day\;i.p.)$, $Pb(Ac)_2$ and EDTA$(each\;10{\mu}mole/kg/day\;i.p.)$, $Pb(Ac)_2$ and $FeSO_4(each\;l0{\mu}mole/kg/day\;hp)$. The pancreatico-biliary juice was collected under urethane anesthesia, and activities of amylase and lipase were determined by employing Sumner's and Cherry and Crandall's methods. The summarized results are follows. 1) In the experiment for acute toxicity of lead acetate, 20% of mortality was observed in rat treated with lead acetate as well as inhibition of the activity of amylase in the juice at the 3 rd day of the treatment. 2) No increases in body weight were observed in rats treated with lead acetate, while in control group the significant increases were observed. However, the body weights of animals were increased in the group lead acetate plus EDTA or $FeSO_4$. 3) Lead acetate decreased significantly the volume of pancreatico-biliary juice whereas additional treatment of EDTA and $FeSO_4$ prevented it. 4) Total activity of amylase was markedly reduced due to lead acetate treatment, but no change was showed following additional treatment with EDTA and $FeSO_4$. 5) No changes in the cholate and lipase output were observed in rats treated with lead acetate as compared with that of control rats. 6) Increase in bilirubin output in rats treated with lead acetate was shown on the 2nd and 3rd weeks treatment. 7) In the case of in vitro experiment, lead acetate also markedly inhibited release of amylase from pancreatic fragment. 8) Histologic finding indicated that acini vacuolation was induced in the pancreatic tissue of rat treated with lead acete. From the above results, it might be concluded that lead acetate decreases the volume of pancreatico-biliary secretion and inhibits the amylase activity, by acting directly on pancreatic cells.