The active metabolite of vitamin D such as $1{\alpha}$,25-dihydroxyvitamin ($D_3(1{\alpha},25(OH)_2D_3)$ is a well-known key regulatory factor in bone metabolism. However, little is known about the potential of vitamin D as an odontogenic inducer in human dental pulp cells (HDPCs) in vitro. The purpose of this study was to evaluate the effect of vitamin $D_3$ metabolite, $1{\alpha},25(OH)_2D_3$, on odontoblastic differentiation in HDPCs. HDPCs extracted from maxillary supernumerary incisors and third molars were directly cultured with $1{\alpha},25(OH)_2D_3$ in the absence of differentiation-inducing factors. Treatment of HDPCs with $1{\alpha},25(OH)_2D_3$ at a concentration of 10 nM or 100 nM significantly upregulated the expression of dentin sialophosphoprotein (DSPP) and dentin matrix protein1 (DMP1), the odontogenesis-related genes. Also, $1{\alpha},25(OH)_2D_3$ enhanced the alkaline phosphatase (ALP) activity and mineralization in HDPCs. In addition, $1{\alpha},25(OH)_2D_3$ induced activation of extracellular signal-regulated kinases (ERKs), whereas the ERK inhibitor U0126 ameliorated the upregulation of DSPP and DMP1 and reduced the mineralization enhanced by $1{\alpha},25(OH)_2D_3$. These results demonstrated that $1{\alpha},25(OH)_2D_3$ promoted odontoblastic differentiation of HDPCs via modulating ERK activation.
Kim Byung-Sun;Lim Young-Jae;Choi Hee-In;Park Seong-Jun
Journal of Veterinary Clinics
/
v.11
no.1
/
pp.419-426
/
1994
Acepromazine maleate(sedaject) was injected to 3 and 5 thoroughbred racehorses at 0.2mg/kg/bw, intramurculary(IM) and 0.1mg/kg/bw, intravenously(IV) respectively, and investigated the changes of clinical signs and blood pictures In before and after injection. Sedation was induced within 15 minutes after injection at the two groups and general sedation with towering of the upper eyelids and penile protrusion lasted about 7~9 hours and 9~11 hours at IV group and IM group following injection respectively. Heart beat and respiratory rates were induced within 15 minutes and then slowly returned to preinjection levels at 3 and 7 hours in the two group following injection respectively. Body temperature was decreased within IS minutes and the effect was Peaked after 30 minutes and 3 hours in IV group and IM group respectively, and then slowly returned to preinjection levels. RBC parameters, Hb and PCV were decreased about 30% at 1~5 hours and then returned to preinjection values at 13~24 hours in two groups Total WBC number were decreased slightly within 30 minutes and then returned to preinjection level at 13~24 hours in IV group but being still decreased 24 hours after dosing in IM group serum glucose level, SGOT and ALP activity were not changed significantly. Generally the set of sedation and awakening signs were faster in IV group than in IM group and RBC parameters and total WBC were depressed markedly in IM group than in IV group.
This study was undertaken to find out the bio-effects due to be a radiation fractionated exposure. The experimental animals were divided into the control group and the radiation exposure groups of 20cGy, 40cGy and 80cGy with 220 male Sprague-Dawley rats at 6 weeks old. The radiation exposure groups were fractionated exposed from each 20cGy, 40cGy and 80cGy for every 5 days. The chromosome aberrations, the frequency of SCE, the changes of body weight, hematological values and enzyme activities were investigated for the fractionating exposure times and the time after fractionated exposure. The results were summarized as follows 1. The body weight of the radiation exposure groups were significantly decreased compared with control group according to the increasing fractionated exposure times, and it was the lowest values at the immediately after the end of the fractionating exposed, but it was recovered with the level of control group at 3rd weeks gradually increased 1st week after fractionated exposure. 2. The values of WBC, RBC, Hb and Hct in the radiation exposure groups were significantly decreased than those the control group, but the values of GOT, GPT, ALP, and LDH in the radiation exposure groups were significantly increased than those of the control group. 3. The frequency of chromosomal aberration were increased according to the increasing fractionated exposure dose, and it showed the highest at 5th days after fractionated exposed. The types of chromosomal aberration were occurred such as a numerical abnormality, deletion, break and duplication, it was not recovered immediately and maintained high frequency than the control group. 4. The frequency of SCE were significantly increased according to the increasing fractionated exposure dose in 20cGy, 40cGy and 80cGy groups. But it was recovered the level of control group at 7th days after fractionated exposure. According to the above results, this study could confirm that the frequency of chromosomal aberration and SCE were increased with fractionated exposure dose, the other hand, the changes of body weight, hematological values and enzyme activity values were significantly affected according to the increasing fractionated exposure dose.
Liver is an important target of the toxicity of drugs, xenobiotics and oxidative stress. Acetaminophen pverdose causes acute liver injury in both humans and animals. This study was performed to observe the effect of sachunwhan and its component groups on recovery of hepatoxicity in acetaminophen treated rats. The experimental group was divided into 4 groups: sachungwhan(SC), samultang group(SC-1: 當歸, 川芎), chungyul group(SC-2: 龍膽草, 大黃, 梔子), and haepyo group(SC-3:羌活, 防風). Under the same condition Normal group was fed basal diet and water; Control group was injected acetaminophen and fed basal diet for 2 weeks; Experimental groups were injected acetaminophen and fed each extracts for 2 weeks respectively. The results were obtained as follows: 1. In the study on antioxidative defense system in vivo, SC reduced the amount of lipid peroxide in both serum and liver and showed activity on antioxidative enzymes such as catalase, glutathion. Other groups had effect only on glutathion. 2. In the study on hepatotoxicity(GOT, GPT, ${\gamma}$-GTP, ALP, LDH, Bilirubin), SC had a significant effect on recovery of hepatoxicity in acetaminophen treated rats. Other groups had no effect except SC-1 having effect on ${\gamma}$-GTP. As results shown, only Sachungwhan(SC) has significant effects on recovery of hepatoxicity and antioxidative defense system in vivo. These results suggest that Sachungwhan(SC) made antioxidative defense system active and it seemed to be very important to its effect on recovery of hepatoxicity. In the other hand, Component groups had no effect on recoverv of hepatoxicity and antioxidative defense system in vivo. This was thought that component drugs' cooperative synergy effect would be important to Sachungwhan(SC)'s effects mentioned in this paper.
The aim of the study was to evaluate ultrasonographic findings, affected age, hematology, blood chemistry and clinical signs according to open or closed cervix in 102 bitches presented for treatment of pyometra. The prevalence of pyometra according to breed was observed in Maltese 22.5%, Yorkshire Terrier 13.7% and Shih Tzu 12.7%. The mean age of dogs was $9.6{\pm}0.3years$, and open cervix pyometra was more prevalent than closed cervix pyometra. Clinical signs included anorexia, vaginal discharge, depression, polyuria/polydipsia, vomiting, and abdominal distension. The concentration of BUN and the activity of ALP in dogs with closed cervix pyometra were significantly higher than those in dogs with open cervix pyometra (p < 0.05). The white blood cell and neutrophils in dogs with closed cervix pyometra were significant higher than those in dogs with open cervix pyometra (p < 0.05). Ultrasonographic findings of the uterus with open or closed cervix pyometra showed variable patterns. The uterine wall was variable in appearance, from thick and irregular to smooth and thin. The uterine wall was thicker in open cervix pyometra than in closed cervix pyometra. The luminal cavity included smaller amount of anechoic fluid in open cervix pyometra than in closed cervix pyometra.
Objectives : This study was done to investigate the effects of JMT on hypothyroidism in rats. Materials and Methods : After pretreatment with 50mg/kg thiouracil for 30 days, the experimental group was treated with 0.56g/kg JMT orally and the control group was treated with 0.56g/kg of normal saline instead for 20 days. The various indicators related to hypothyroidism were measured, such as T3-uptake content, T3 content, T4 content, TSH content, hematological values, enzyme activity, total cholesterol content, Na+ content change in the serum and body weight of rats induced by thiouracil. Results : The JMT-treated group showed significant increase in comparison with the control group in serum T3-uptake and T4 content. The JMT-treated group also showed significant decrease in comparison with the control group in serum TSH content. However, the JMT-treated group did not show significant increase in comparison with the control group in serum T3 content. The JMT-treated group showed significant increase in comparison with the control group in serum RBC. The JMT-treated group showed significant decrease in comparison with the control group in serum CPK, ALP, LDH content and serum total cholesterol content. The JMT-treated group did not show significant increase in comparison with the control group in serum Na+ content. The JMT-treated group showed significant decrease in comparison with the control group in body weight. Conclusions : These results suggest that JMT is useful in treatment of hypothyroidism.
Lee Taek-Jun;Hong Ji-Woo;Choi Hyun-Ju;Gil In-Ho;Jeong Sun-Chung;Hwang Gui-Seo;Lee Ki-Nam
Journal of Society of Preventive Korean Medicine
/
v.8
no.2
/
pp.13-30
/
2004
This study was performed to evaluate the effect of Kangwhal-Sokdan tang(KS) on osteoblast function and gene expression. The osteoblast separated from the murine calvariae and MG-63 cell were cultivated to evaluate the cell function and gene expression. The results were summarized as followes. 1) KS increased cell proliferation of murine calvarial cell. 2) KS increased protein synthesis, collagen synthesis and ALP activity of murine calvarial cell. 3) KS increased the survival rate of murine calvarial cell. 4) KS increased the expression of calcitonin receptor and PTH receptor. 5) KS increased the expression of PKA and PKC. 6) KS decreased the expression of $PLA_2$, COX, $PGE_2$ synthase, but increased prostacyclin synthase. 7) KS increased the expression of collagen(type IV) gene. It is concluded that KS might improve the osteoporosis resulted from augumentation of osteoblast proliferation and gene expression.
Misaengtang (MST), a formula of Korean herbal medicines, has been used as a weight-controlling recipe. We have investigated two experiment of body weight regulation by MST In rats. i) The anti-obesity effect of MTS on a high fat diet-induced obesity, male Sprague-Dawley rats were fed with a high-fat diet containing 30% in the absence or presence of MST (0.3, 1 or 3%) or a reference orlistat (0.05%) for 6 weeks. ii) weight-decrease effect of MST on normal diet, same animal were fed with a normal diet in the absence or presence of MST (3%) for 6 weeks. And the body weights, daily feed and water consumptions, organ weights, fat weights serum biochemistry were measured. In both experiments, MST and orlistat did not affect the body weight gain. But orlistat significantly increased the feed and water consumptions, leading to low-feed efficiency, and orlistat markedly reduced abdominal, paratesticular and perirenal fat weights, although increased the kidney weights. In MST, low dose (0.3%) of MST decreased the perirenal fat and increased the kidney weights in rats fed HFD, and MST 3% decreased the abdominal fat weights in rats fed normal diet. In addition, Orlistat caused changes in parameters of hepatotoxicity (AST and glucose), nephrotoxicity (BUN and B/C ratio) and lipid metabolism (HDL and triglycerides). In comparison, MST decreased AST, ALP and ALT, the hepatotoxicity markers, and somewhat improved the hepatic fatty degeneration. Taken together, it is suggested that MST does not exert anti-obesity activity as well as remarkably direct effects, but MST may be potentially benefit for dietary cure and exercise-cure of obesity.
The purpose of this investigation is examining how treatment for foot reflex massage affect the changes in body temperature and blood composition. The cases of experiment are 10 male(n=2) and female(n=8) who don't have special clinical problems. This is the process of experiment. First, we photograph the anterior part and posterior of the upper, lower half of the body with an infrared imaging system. Second, among same parts, we compare the temperature of the whole body before treatment for foot reflex massage with the temperature after it. Then we draw blood from the body and observe a change: in numerical value of blood before and after treatment. Before and after treatment, we come to measure temperature of the whole body, the numerical value of WBC, RBC, platelet, HCT, Hb through analysis of blood, and the result of AST(GOT), ALT(GPT), ALP, GGT through analysis of serum enzyme activity of blood. There were no significant differences in blood composition. In terms of SPSS statistic program, when we explain each numerical value before and after foot massage, the abdominal, the buttocks, the femoral region universally take successful results about a change in body temperature(p<0.05).
Objective : As the average span of human life extends, more and more people are at risk of developing osteoporosis, one of the typical diseases of the aged. This thesis presents the effects of Jeungikgwiryon-tang (Tsengikueijung-tang) on bone density, bone biochemical markers, and fetal calvarial cells (FCC) of Sprague Dawleys (S.D.) rats that have induced osteoporosis. The purpose is to see how Jeungikgwiryon-tang (Tsengikueijung-tang) reduces osteoporosis symptoms. Methods : In the first experiment Sprague Dawleys rats were administered Jeungikgwiryon-tang (Tsengikueijung-tang) for 70 days, once a day. Two different doses were used, creating high-dosed and low-dosed groups. The results were compared with a control group. In the second experiment, Jeungikgwiryon-tang (Tsengikueijung-tang) was applied to fetal calvarial cells (FCC) obtained from fetuses inside pregnant Sprague Dawleys rats. The FCCs from high-dosed and low-dosed groups were compared with those from a control group. Results : 1. Bone densities in Groups A and B increased significantly from a control group. 2. Bone ash densities in Group A showed substantial increase. 3. Calcium and phosphorus in bones in Group A increased significantly. 4. Activity of fetal calvarial cells' division in Groups A and B increased significantly from a control group, and ALP of fetal calvarial cells' formation in Group A increased significantly. 5. Protein and collagen levels of fetal calvarial cells in Group A increased significantly. Conclusion : It was found that Jeungikgwiryon-tang (Tsengikueijung-tang) has a tendency to make significant increases in bone densities by enhancing bone formation and by retarding bone absorption. It was concluded that Jeungikgwiryon-tang (Tsengikueijung-tang) activates osteoblast cells effectively.
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