• Title/Summary/Keyword: Metabolism study

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Effect of Cimetidine and Phenobarbital on Metabolite Kinetics of Omeprazole in Rats

  • Park Eun-Ja;Cho Hea-Young;Lee Yong-Bok
    • Archives of Pharmacal Research
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    • v.28 no.10
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    • pp.1196-1202
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    • 2005
  • Omeprazole (OMP) is a proton pump inhibitor used as an oral treatment for acid-related gastrointestinal disorders. In the liver, it is primarily metabolized by cytochrome P-450 (CYP450) isoenzymes such as CYP2C19 and CYP3A4. 5-Hyroxyomeprazole (5-OHOMP) and omeprazole sulfone (OMP-SFN) are the two major metabolites of OMP in human. Cimetidine (CMT) inhibits the breakdown of drugs metabolized by CYP450 and reduces, the clearance of coad-ministered drug resulted from both the CMT binding to CYP450 and the decreased hepatic blood flow due to CMT. Phenobarbital (PB) induces drug metabolism in laboratory animals and human. PB induction mainly involves mammalian CYP forms in gene families 2B and 3A. PB has been widely used as a prototype inducer for biochemical investigations of drug metabolism and the enzymes catalyzing this metabolism, as well as for genetic, pharmacological, and toxicological investigations. In order to investigate the influence of CMT and PB on the metabolite kinetics of OMP, we intravenously administered OMP (30 mg/kg) to rats intraperitoneally pretreated with normal saline (5 mL/kg), CMT (100 mg/kg) or PB (75 mg/kg) once a day for four days, and compared the pharmacokinetic parameters of OMP. The systemic clearance ($CL_{t}$) of OMP was significantly (p<0.05) decreased in CMT-pretreated rats and significantly (p<0.05) increased in PB-pretreated rats. These results indicate that CMT inhibits the OMP metabolism due to both decreased hepatic blood flow and inhibited enzyme activity of CYP2C19 and 3A4 and that PB increases the OMP metabolism due to stimulation of the liver blood flow and/or bile flow, due not to induction of the enzyme activity of CYP3A4.

Prepartum body condition score affects milk yield, lipid metabolism, and oxidation status of Holstein cows

  • Zhao, Wei;Chen, Xue;Xiao, Jun;Chen, Xiao Hui;Zhang, Xue Feng;Wang, Tao;Zhen, Yu Guo;Qin, Gui Xin
    • Asian-Australasian Journal of Animal Sciences
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    • v.32 no.12
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    • pp.1889-1896
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    • 2019
  • Objective: This study aimed to investigate the effects of prepartum body condition score (BCS) on the milk yield, lipid metabolism, and oxidative status of Holstein cows. Methods: A total of 112 multiparous Holstein cows were divided into 4 groups according to the BCS at 21 days before calving: medium BCS (3.0 to 3.25, MBCS), high BCS (3.5 to 3.75, HBCS), higher BCS (4.0 to 4.25, HerBCS), and highest BCS (4.5 to 5.0, HestBCS). Blood samples were collected on 21, 14, and 7 days before calving (precalving), on the calving day (calving), and on 7, 14, and 21 days after calving (postcalving). The indices of lipid metabolism and oxidative status were analyzed using bovine-specific enzyme-linked immunosorbent assay kit. Colostrum were taken after calving and analyzed by a refractometer and milk analyzer. The individual milk yield was recorded every 3 days. Results: The density and levels of immune globulin and lactoprotein of colostrum from Holstein cows in the HestBCS group were the highest (p<0.05). These animals not only had the highest (p<0.05) levels of serum non-esterified fatty acids and beta-hydroxybutyrate, but also had the highest (p<0.05) levels of malondialdehyde, superoxide dismutase, catalase, vitamin A, and vitamin E. In addition, greater (p<0.05) BCS loss was observed in the HestBCS cows. Conclusion: This study demonstrates that the milk yield, lipid metabolism, and oxidative status of Holstein cows are related to prepartum BCS and BCS loss during the transition period. HestBCS cows are more sensitive to oxidative stress and suffer greater loss of BCS after calving, whereas the MBCS animals had better milk yield performance.

Effect of Cardiopulmonary Physiotherapy on Patients With Percutaneous Coronary Intervention - Systematic Review and Meta-Analysis (경피적 관상동맥 중재술을 받은 환자를 대상으로 심장호흡물리치료에 대한 효과 - 체계적 고찰과 메타분석)

  • Kang, Na-yoon;Park, Beom-seok;Kim, Min-hee
    • Journal of the Korean Society of Physical Medicine
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    • v.14 no.1
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    • pp.63-73
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    • 2019
  • PURPOSE: This study examined the effects of cardiopulmonary physiotherapy on the cardiopulmonary function, metabolism, inflammatory markers, and quality of life in patients with coronary artery disease who underwent percutaneous coronary intervention (PCI). METHODS: Electronic bibliographic databases of a regional information sharing system (RISS) and PubMed were searched to identify studies with randomized and non-randomized controlled trials. As the final outcome, 320 publications were identified and 18 studies met the inclusion and exclusion criteria. All studies were assessed for the quality of study using Cochrane's risk of bias. RESULTS: Sixteen studies met the inclusion criteria, in which meta-analysis had been conducted to examine the effectiveness of cardiopulmonary physiotherapy on the cardiopulmonary function, metabolism, inflammatory markers, and quality of life in patients undergoing PCI. Meta-analysis based on a random effect model showed that the cardiopulmonary physiotherapy was beneficial in improving the cardiopulmonary function, metabolism, inflammatory markers, and quality of life. In particular, there was a significant effect on the peak oxygen uptake (effect size 5.30%; 95% confidence interval 3.62~6.97). Cardiopulmonary physiotherapy for a during period of 6 weeks or more was effective in significantly improving the cardiopulmonary function and metabolism function in a subgroup analysis, but cardiopulmonary physiotherapy for less than 6 weeks was not effective. CONCLUSION: Cardiopulmonary physiotherapy has positive effects on the cardiopulmonary function, metabolism, inflammatory markers, and quality of life in patients undergoing PCI.

A Study on the Clinical Study of Herbal Medicine for Glucose-Lipid Metabolism Abnormalities in Polycystic Ovary Syndrome (다낭성 난소 증후군의 당-지질대사 이상에 대한 한약 임상 연구 고찰)

  • Park, Su-Yeon;Park, Kyung-Dug;Yoon, Young-Jin
    • The Journal of Korean Obstetrics and Gynecology
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    • v.32 no.4
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    • pp.67-86
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    • 2019
  • Objectives: The purpose of this study is to investigate the effect of herbal medicine treatment for glucose and lipid metabolic abnormalities caused by polycystic ovary syndrome (PCOS). Methods: We searched for randomized controlled clinical trials (RCTs) in 6 electronic databases and search key words were 'PCOS' and 'chinese medicine' or 'herbal medicine' and 'Metabolic syndrome' or 'glucose' or 'lipid'. The results of the studies were analyzed and the risk of bias was assessed by using Cochrane risk of bias (RoB) tool. Results: We finally selected 7 studies. In 3 of selected studies, herbal medicine was more effective than western medicine in all outcomes and in other 3 selected studies, herbal medicine was partially more effective than western medicine. Conclusions: The study provides a basis for applying herbal medicine treatment to patients with metabolic syndrome caused by PCOS and helps developing a treatment protocol of caring patients with PCOS. But the limitation of this study is that the number of studies included is small and lack of uniformity of outcome indicators made it difficult to observe overall interrelationship between indicators.

Changes in the Pharmacokinetics of Rosiglitazone, a CYP2C8 Substrate, When Co-Administered with Amlodipine in Rats

  • Kim, Seon-Hwa;Kim, Kyu-Bong;Um, So-Young;Oh, Yun-Nim;Chung, Myeon-Woo;Oh, Hye-Young;Choi, Ki-Hwan
    • Biomolecules & Therapeutics
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    • v.17 no.3
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    • pp.299-304
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    • 2009
  • Rosiglitazone maleate (RGM) is widely used for improving insulin resistance. RGM is a moderate inhibitor of cytochrome P450 2C8 (CYP2C8) and is also mainly metabolized by CYP2C8. The aim of this study was to determine whether the effect of RGM on CYP2C8 is altered by co-treatment with other drugs, and whether amlodipine camsylate (AC) changes the pharmacokinetics (PK) of RGM. Of the 11 drugs that are likely to be co-administered with RGM in diabetic patients, seven drugs lowered the $IC_{50}$ value of RGM on CYP2C8 by more than 80%. In vitro CYP2C8 inhibitory assays of RGM in combination with drugs of interest showed that the $IC_{50}$ of RGM was decreased by 98.9% by AC. In a pharmacokinetic study, Sprague-Dawley (SD) rats were orally administered 1 mg/kg of RGM following by single or 10-consecutive daily administrations of 1.5 mg/kg/day of AC. No significant changes in the pharmacokinetic parameters of RGM were observed after a single administration of AC, but the AUC and $C_{max}$ values of RGM were significantly reduced by 36% and 31%, respectively, by multiple administrations of AC. In conclusion, RGM was found to be affected by AC by in vitro CYP2C8 inhibition testing, and multiple dosing of AC appreciably changed the pharmacokinetics of RGM. These findings suggest that a drug interaction exists between AC and RGM.

The Effects of Smoking Cessation through a Smoking Cessation Counselling Program on Expiratory CO Concentration, BMI, Blood Pressure, Liver Function, and Lipid Metabolism in Smoking Cessation Successes (금연 상담프로그램을 통한 금연이 금연 성공자의 호기 CO농도, BMI, 혈압, 간기능 및 지질대사에 미치는 영향)

  • Lee, Kun-Ja;Lee, Myung-Hee
    • Research in Community and Public Health Nursing
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    • v.19 no.2
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    • pp.234-246
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    • 2008
  • Purpose: This study was performed in order to examine the effects of an smoking cessation counselling program for smoking cessation success. Method: Among a total of 468 persons who had ceased from smoking for 6-months and had visited the smoking cessation clinic of a public health center from January 2nd to December 31th in 2006, 61 in all who had a negative reaction in the urine nicotine check were selected for this study. Collected data were expiratory CO concentration, BMI, blood pressure, liver function, and lipid metabolism. These data were analyzed by descriptive statistics, repeated measured ANOVA and paired t-test with the SPSS/PC(Version 12.0) program. Result: There were significant changes in expiratory CO concentration, SBP, DBP, AST, ALT, and TG, but not in BMI, $\gamma$-GTP, TC, HDL-C, and LDL-C. Conclusion: This study showed that smoking cessation through a smoking cessation counselling program has partially positive effects for smoking cessation success. The results of this study show that the smoking cessation counselling program at the smoking cessation clinic of a public health center should be continued for smoking cessation success.

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Screening and functional validation of lipid metabolism-related lncRNA-46546 based on the transcriptome analysis of early embryonic muscle tissue in chicken

  • Ruonan, Chen;Kai, Liao;Herong, Liao;Li, Zhang;Haixuan, Zhao;Jie, Sun
    • Animal Bioscience
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    • v.36 no.2
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    • pp.175-190
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    • 2023
  • Objective: The study was conducted to screen differentially expressed long noncoding RNA (lncRNA) in chickens by high-throughput sequencing and explore its mechanism of action on intramuscular fat deposition. Methods: Herein, Rose crown and Cbb broiler chicken embryo breast and leg muscle lncRNA and mRNA expression profiles were constructed by RNA sequencing. A total of 96 and 42 differentially expressed lncRNAs were obtained in Rose crown vs Cobb broiler chicken breast and leg muscle, respectively. lncRNA-ENSGALT00000046546, with high interspecific variability and a potential regulatory role in lipid metabolism, and its predicted downstream target gene 1-acylglycerol-3-phosphate-O-acyltransferase 2 (AGPAT2), were selected for further study on the preadipocytes. Results: lncRNA-46546 overexpression in chicken preadipocyte 2 cells significantly increased (p<0.01) the expression levels of AGPAT2 and its downstream genes diacylglycerol acyltransferase 1 and diacylglycerol acyltransferase 2 and those of the fat metabolism-related genes peroxisome proliferator-activated receptor γ, CCAAT/enhancer binding protein α, fatty acid synthase, sterol regulatory element-binding transcription factor 1, and fatty acid binding protein 4. The lipid droplet concentration was higher in the overexpression group than in the control cells, and the triglyceride content in cells and medium was also significantly increased (p<0.01). Conclusion: This study preliminarily concludes that lncRNA-46546 may promote intramuscular fat deposition in chickens, laying a foundation for the study of lncRNAs in chicken early embryonic development and fat deposition.

The Effects of Short Term Comprehensive Life Style Modification Program on Glycemic Metabolism, Lipid Metabolism and Body Composition in Type 2 Diabetes Mellitus (단기간의 포괄적인 생활습관개선 프로그램이 제2형 당뇨병환자의 당대사 및 지질대사와 체구성에 미치는 효과)

  • Yoo Ji Soo;Lee Suk Jeong;Lee Hyun Chul;Kang Eun Seok;Kim So Hun;Park Eun Jeong
    • Journal of Korean Academy of Nursing
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    • v.34 no.7
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    • pp.1277-1287
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    • 2004
  • Purpose: This study was to evaluate the effects of a short term comprehensive life style modification program on glycemic metabolism, lipid metabolism and body composition in type 2 diabetes mellitus patients. Method: A nonequivalent control group with a pre post test was designed. Data collection was done from October 2003 to June, 2004 at a hospital. Glycemic metabolism was measured by a.c., p.c. and $HbA_{1}c$, and lipid metabolism was measured by cholesterol, HDL cholesterol, LDL cholesterol and triglycerides. Body Composition was measured by body weight, body mass index, waist, measurement waist per hip ratio, body fat, muscle weight and abdominal fat tissue(intra abdominal distance). The Experimental group, which was composed of 29 participants, was educated based on a life style modification protocol at a weekly meeting for 12 weeks and carried out exercise, diet along individual parameters and self monitoring, while 24 participants in the control group received only diet education. Result: 1. The experimental group showed a significant lower a.c.(t=2.11, p=.04) and $HbA_{1}c$(t=2.65, p=.01) compared to those of the control group. 2. The experimental group showed a significant lower LDL than the results of the control group(t=2.42, p=.02). 3. The experimental group showed a significant lower weight(t=3.09, p=.00), BMI(t=3.01, p=.00), body fat(t=2.94, p=.01) and abdominal fat tissue(t=3.05, p=.01) than those of the control group. Conclusion: The results provided evidence for the effectiveness of a short term comprehensive life style modification program composed of exercise, diet, support, self efficacy elevation and self monitoring in type 2 diabetes mellitus.

Effects of Levels of Feed Intake and Inclusion of Corn on Rumen Environment, Nutrient Digestibility, Methane Emission and Energy and Protein Utilization by Goats Fed Alfalfa Pellets

  • Islam, M.;Abe, H.;Terada, F.;Iwasaki, K.;Tano, R.
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.7
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    • pp.948-956
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    • 2000
  • The effect of high and low level of feed intakes on nutrient digestibility, nutrient losses through methane, energy and protein utilization by goats fed on alfalfa (Medicago sativa L.) pellets based diets was investigated in this study. Twelve castrated Japanese goats were employed in two subsequent digestion and metabolism trials. The goats were divided into three groups, offered three diets. Diet 1 consisted of 100% alfalfa pellet, Diet 2 was 70% alfalfa pellet and 30% corn, and Diet 3 was 40% alfalfa pellet and 60% corn. The two intake levels were high (1.6 times) and low (0.9 times) the maintenance requirement of total digestible nutrients (TON). Rumen ammonia nitrogen ($NH_3$-N) level of Diet 1 was lower (p<0.001) compared to Diets 2 and 3, but the values were always above the critical level (I50 mg/liter), The pH values of rumen liquor ranged from 6.02 to 7.30. Apparent digestibility of nutrient components did not show differences (p>0.05) between the two intake levels but inclusion of corn significantly altered the nutrient digestibility. Diet 3 had highest (p<0.001) dry matter (DM), organic matter (OM), ether extract (EE) and nitrogen fee extract (NFE) digestibility followed by the Diet 2 and Diet 1. The crude protein (CP) digestibility values among the three diets were in a narrow range (70.1 to 70.8%). Crude fiber (CF) digestibility for Diet 3 was slight higher (p>0.05) than that for other two diets. When alfalfa was replaced by corn, there were highly significant (p<0.001) increases in DM, OM, EE and NFE apparent digestibility and a slight increase in the CF digestibility (p>0.05). There were no differences (p>0.05) in energy losses as methane ($CH_4$) and heat production among the diets but energy loss through urine was higher for the Diet 1. The total energy loss as $CH_4$ and heat production were higher for the high intake level but the energy loss as $CH_4$ per gram DM intake were same (0.305 kcal/g) between the high and low intake level. Retained energy (RE) was higher for Diet 3 and Diet 2. Nitrogen (N) losses through feces and urine were higher (p<0.001) for Diet 1. Consequently, N retention was lower (p>0.05) for Diet 1 and higher in Diets 3 and 2. It is concluded that inclusion of corn with alfalfa increased the metabolizable energy (ME) and RE, and retained N through reducing the energy and N losses. The high level of intake reduced the rate of nutrient losses through feces and urine.

Influence of Mentha×piperita L. (Peppermint) Supplementation on Nutrient Digestibility and Energy Metabolism in Lactating Dairy Cows

  • Hosoda, K.;Nishida, T.;Park, W.Y.;Eruden, B.
    • Asian-Australasian Journal of Animal Sciences
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    • v.18 no.12
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    • pp.1721-1726
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    • 2005
  • The characteristic smell of cow milk was suppressed when herbs were consumed by lactating dairy cows. But it is unclear whether or not peppermint ingestion affects the nutritional and milk production parameters in lactating dairy cows. The objective of this study was to examine the effect of peppermint feeding to lactating dairy cows on nutrient digestibility, energy metabolism, ruminal fermentation and milk production. Eight Holstein cows were given a diet supplemented with or without 5% of dried peppermint per diet on a dry matter basis. The digestion of nutrients from cows fed the diet with peppermint was significantly lower than that of the control group. Energy loss as methane and methane released from cows receiving the peppermint treatment was significantly lower than that in the control cows. Peppermint feeding to cows resulted in the promotion of thermogenesis. However, ruminal fermentation and milk production were not affected by peppermint feeding. In conclusion, peppermint ingestion by lactating dairy cows reduces the nutrient digestibility and methanogenesis, and changes energy metabolism.