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Quantitative assessment of the relevance of organic-aniontransporting-polypeptide 1B1 and 2B1 polymorphisms in fexofenadine pharmacokinetic variants via pharmacometrics

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Journal of Pharmaceutical Analysis 2023年第6期13卷 660-672页

作者： Ji-Hun jang seung-Hyun Jeong Yong-Bok Lee Department of Pharmacy College of PharmacyChonnam National UniversityGwangju61186Republic of Korea Department of Pharmacy College of PharmacySunchon National UniversitySuncheon-si57922Republic of Korea

Fexofenadine is useful in various allergic disease ***,the pharmacokinetic variability information and quantitative factor identification of fexofenadine are very *** study aimed to verify the validity of previously proposed genetic factors through fexofenadine population pharmacokinetic modeling and to explore the quantitative correlations affecting the pharmacokinetic *** of the organic-anion-transporting-polypeptide(OATP)1B1 and 2B1 have been proposed to be closely related to fexofenadine pharmacokinetic ***,modeling was performed using fexofenadine oral exposure data according to the OATP1B1-and ***1B1 and 2B1 were identified as effective covariates of clearance(CL/F)and distribution volume(V/F)-CL/F,respectively,in fexofenadine pharmacokinetic ***/F and average steady-state plasma concentration of fexofenadine differed by up to 2.17-and 2.20-folds,respectively,depending on the OATP1B1 *** the individuals with different OATP2B1 polymorphisms,the CL/F and V/F differed by up to 1.73-and 2.00-folds,*** of the areas under the curves following single-and multiple-administrations,and the cumulative ratio were significantly different between OATP1B1-and 2B1-polymorphism *** on quantitative prediction comparison through a model-based approach,OATP1B1 was confirmed to be relatively more important than 2B1 regarding the degree of effect on fexofenadine pharmacokinetic *** on the established pharmacokineticpharmacodynamic relationship,the difference in fexofenadine efficacy according to genetic polymorphisms of OATP1B1 and 2B1 was 1.25-and 0.87-times,respectively,and genetic consideration of OATP1B1 was expected to be important in the pharmacodynamics area as *** population pharmacometrics study will be a very useful starting point for fexofenadine precision medicine.

关键词： OATP1B1 OATP2B1 Fexofenadine Population pharmacometrics Genetic polymorphism

High-performance and current crowding-free InGaN-GaN- based LEDs integrated by an electrically-reverse-connected Schottky diode and a Mg-delta doped p-GaN

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Frontiers of Optoelectronics 2012年第2期5卷 127-132页

作者： Sei-Min KIM Seon-Ho jang Ja-soon jang Department of Electronic Engineering LED-IT Fusion Technology Research Center (LIFTRC) Yeungnam University Gyeongbuk 712 749 Korea

This work demonstrates high-performance and current crowding-free InGaN/GaN light-emitting diodes （LEDs） using an electrically-reverse-connected Schottky diode （SD） and an Mg-delta （δ） doped layer. Possible mechanism of carrier transport at the interface between transparent conducting electrode （TCE） and p-GaN with the δ-doped layer is also investigated. Results show that the LED with the SD and Mg delta （δ）-doping layer yields lower series resistance, higher output power, and lower reverse leakage current compared to normal LEDs. In addition, unlike the normal LED, there is no occurrence for the current crowding effect in the proposed LED even at high current density of 380mA/cm2. These remarkable behaviours clearly indicate that the use of the SD and δ- doping in the p-GaN region is very promising to achieve high-brightness and excellent-reliability GaN-based LEDs.

关键词： GaN light-emitting diode (LED) Schottkydiode (SD) integration current crowding

Adenosine monophosphate enhances callus regeneration competence for de novo plant organogenesis

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Molecular Plant 2023年第12期16卷 1867-1870页

作者： Hong Gil Lee Seo Young jang Eun Yee Jie seung Hee Choi Ok-Sun Park soon Hyung Bae Hyun-soon Kim Suk Weon Kim Geum-Sook Hwang Pil Joon Seo Department of Chemistry Seoul National UniversitySeoul 08826Korea Plant Genomics and Breeding Institute Seoul National UniversitySeoul 08826Korea Integrated Metabolomics Research Group Western Seoul CenterKorea Basic Science InstituteSeoul 03759Korea Biological Resource Center Korea Research Institute of Bioscience and BiotechnologyJeongeup56212Korea Plant Systems Engineering Research Center Korea Research Institute of Bioscience and BiotechnologyDaejeon 34141Korea College of Pharmacy Chung-Ang UniversitySeoul 06974Korea

Dear Editor,Plant tissue culture involves callus formation and de novo shoot ***,explants from differentiated tissues are used to generate a pluripotent cell mass,called callus,on auxin-rich callus-inducing medium(CIM),followed by shoot regeneration on cytokinin-rich shoot-inducing medium(SiM).Callus results from division of pericycle-like cells(Atta et al.,2009;Sugimoto et al.,2010);its cellular identity resembles that of lateral root primordia(Atta et al.,2009;Sugimoto et al.,2010).Callus acquires cellular pluripotency by forming root stem cell niches on CIM(Sugimoto et al.,2010)。

关键词： Adenosine callus

Aluminum nitride waveguide beam splitters for integrated quantum photonic circuits

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光子学研究:英文版 2023年第7期11卷 1196-1202页

作者： HYEONG-soon jang DONGHWA LEE HYUNGJUN HEO YONG-SU KIM HYANG-TAG LIM seung-WOO JEON SUNG MOON SANGIN KIM SANG-WOOK HAN HOJOONG JUNG Center for Quantum Information Korea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea Department of Electrical and Computer Engineering Ajou UniversitySuwon 16499Republic of Korea Division of Nano and Information Technology KIST SchoolKorea University of Science and TechnologySeoul 02792Republic of Korea

We demonstrate integrated photonic circuits for quantum devices using sputtered polycrystalline aluminum nitride(Al N)on ***-chip Al N waveguide directional couplers,which are one of the most important components in quantum photonics,are fabricated and show the output power splitting ratios from 50:50 to 99:*** beam splitters with an extinction ratio of more than 10 d B are also realized from the Al N directional *** the fabricated Al N waveguide beam splitters,we observe Hong–Ou–Mandel interference with a visibility of 91.7%±5.66%.

关键词： waveguide quantum beam

Pharmacokinetic comparison with different assays for simultaneous determination of cis-,trans-cefprozil diastereomers in human plasma

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Journal of Pharmaceutical Analysis 2021年第3期11卷 351-363页

作者： seung-Hyun Jeong Ji-Hun jang Hea-Young Cho Yong-Bok Lee College of Pharmacy Chonnam National University77 Yongbong-roBuk-guGwangju61186Republic of Korea College of Pharmacy CHA University335 Pangyo-roBundang-guSeongnam-siGyeonggi-Do13488Republic of Korea

The purpose of this study was to compare pharmacokinetic(PK)parameters obtained using two newly developed assays,HPLC-UV and UPLC-ESI-MS/*** of assay and results obtained therefrom are very important in PK studies and can have a major impact on the PK-based clinical dose and usage *** this study,we developed two new methods that are most commonly used in biosample analysis and focused on PK parameters obtained from *** HPLC-UV equipped with a Luna-C8 column using UV detector,cefprozil diastereomers were separated using water containing 2%(V/V)acetic acid and acetonitrile as a mobile *** UPLC-ESI-MS/MS equipped with a HALO-C18 column,cefprozil diastereomers were separated using 0.5%(V/V)aqueous formic acid containing 5 mM ammoniumformate buffer and methanol as a mobile *** showed high resolution,sensitivity,and selectivity without interference by plasma *** intra-and inter-day precisions(CV,%)were within 8.88%for HPLC-UV and UPLC-ESI-MS/*** of both methods was 95.67%-107.50%.These two analytical methods satisfied the criteria of international guidance and could be successfully applied to PK *** of PK parameters between two assays confirmed that there is a difference in the predicted minimum plasma concentrations at steady state,which may affect clinical dose and usage ***,we confirmed possible correlation between PK parameters and various biochemical parameters after oral administration of 1000 mg cefprozil to humans.

关键词： Cefprozil diastereomers Comparison HPLC-UV UPLC-ESI-MS/MS Pharmacokinetic parameter Biochemical parameters

Simultaneous determination of fourteen components of Gumiganghwal-tang tablet in human plasma by UPLC-ESI-MS/MS and its application to pharmacokinetic study

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Journal of Pharmaceutical Analysis 2021年第4期11卷 444-457页

作者： seung-Hyun Jeong Ji-Hun jang Guk-Yeo Lee seung-Jung Yang Hea-Young Cho Yong-Bok Lee College of Pharmacy Chonnam National University77 Yongbong-roBuk-guGwangju61186Republic of Korea National Development Institute of Korean Medicine 288 Udeuraendeu-gilAnyang-myeonJangheung-gunJeollanam-do59338Republic of Korea Department of Oriental Rehabilitation Medicine Dongshin University Gwangju Korean Medicine Hospital141 Wolsan-roNam-guGwangju61619Republic of Korea College of Pharmacy CHA University335 Pangyo-roBundang-guSeongnam-siGyeonggi-do13488Republic of Korea

Gumiganghwal-tang is a traditional herbal medicine widely used for its anti-inflammatory,analgesic,and antipyretic ***,the safety and efficacy of its active ingredients based on an in vivo pharmacokinetic(PK)study have yet been *** have established a sensitive and accurate UPLC-ESI-MS/MS method and conducted a PK study on 14 constituents of Gumiganghwal-tang through human plasma *** conditions were optimized according to the physicochemical properties of the 14 compounds to facilitate efficient separation and eliminate overlap or interference between ***-C18 and Inertsil-C8 columns were used as UPLC stationary phases,and acetonitrile and aqueous formic acid were used as mobile *** the analytes were quantified with a triple quadrupole mass spectrometer using electrospray ionization in multiple reaction monitoring *** chromatograms of 14 bioactive compounds showed excellent elution and sensitivity,and each peak was selectively separated and quantified without interference with each other or *** established analytical method was based on international guidelines and was successfully used to perform PK studies of 14 herbal ingredients in humans after oral administration with Gumiganghwal-tang *** oral absorption of most active components of Gumiganghwal-tang was relatively rapid and remained considerably long in the body to be quantified in plasma up to 48 h after administration.

关键词： Gumiganghwal-tang Fourteen bioactive ingredients Simultaneous analysis UPLC-ESI-MS/MS Pharmacokinetics Clinical study

Pancreatic fistula after pancreaticoduodenectomy:A comparison between the two pancreaticojejunostomy methods for approximating the pancreatic parenchyma to the jejunal seromuscular layer:Interrupted vs continuous stitches

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World Journal of Gastroenterology 2007年第40期13卷 5351-5356页

作者： seung Eun Lee Sung Hoon Yang Jin-Young jang Sun-Whe Kim Department of Surgery Seoul National University College of Medicine28 Yongon-dongChongno-guSeoul 110-744Korea

AIM： The purpose of this study is to find a better operative technique by comparing interrupted stitches with continuous stitches for the outer layer of the pancreaticojejunostomy, i.e. the stitches between the stump parenchyma of the pancreas and the jejunal seromuscular layer, and other risk factors for the incidence of pancreatic leakage.METHODS： During the period January 1997 to October 2004, 133 patients have undergone the end-to-side and duct-to-mucosa pancreaticojejunostomy reconstruction after pancreaticoduodenectomy with interrupted suture for outer layer of the pancreaticojejunostomy and 170 patients with a continuous suture at our institution by one surgeon.RESULTS： There were no significant differences between the two groups in the diagnosis, texture of the pancreas, use of octreotide and pathologic stage. Pancreatic fistula occurred in 14 patients （11%） among the interrupted suture cases and in 10 （6%） among the continuous suture cases （P = 0.102）. Major pancreatic leakage developed in three interrupted suture patients （2%） and zero continuous suture patients （P = 0.026）. In multivariate analysis, soft pancreatic consistency （odds ratio, 5.5; 95% confidence interval 2.3-13.1） and common bile duct cancer （odds ratio, 3.7; 95%CI 1.6-8.5） were＇predictive of pancreatic leakage.CONCLUSION： Pancreatic texture and pathology are the most important factors in determining the fate of pancreaticojejunal anastomosis and our continuous suture method was performed with significantly decreased occurrence of major pancreatic fistula. In conclusion, the continuous suture method is more feasible and safer in performing duct-to-mucosa pancreaticojejunostomy.

关键词： Pancreaticoduodenectomy Pancreaticojejunostomy Pancreatic fistula

Clinicopathologic significance of GLUT1 expression and its correlation with Apaf-1 in colorectal adenocarcinomas

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World Journal of Gastroenterology 2011年第14期17卷 1866-1873页

作者： Young Jin Jun Se Min jang Hu lin Han Ki-Seok jang seung Sam Paik Kang Hong Lee Department of Pathology College of Medicine Hanyang University Seoul 133-792 South Korea Department of Surgery College of Medicine Hanyang University Seoul 133-792 South Korea

AIM:To investigate the role of glucose transporter 1 (GLUT1) expression in colorectal carcinogenesis and evaluate the correlation with clinicopathological parameters and apoptosis-activating factor-1 (Apaf-1) expression in colorectal adenocarcinomas. METHODS:We used tissue microarrays consisting of 26 normal mucosa,50 adenomas,515 adenocarcinomas,and 127 metastatic lesions. Medical records were reviewed and clinicopathological analysis was performed. RESULTS:GLUT1 expression was absent in normal mucosa and low or moderately apparent in 19 cases (38.0%) of 50 adenomas. However,GLUT1 expression was detected in 423 (82.1%) of 515 adenocarcinomas and in 96 (75.6%) of 127 metastatic lesions. GLUT1 expression was significantly correlated with female gender (P = 0.009),non-mucinous tumor type (P = 0.045),poorer differentiation (P = 0.001),lymph node metastasis (P < 0.001),higher AJCC and Dukes stage (P < 0.001 and P < 0.001,respectively). There was a significant inverse correlation between GLUT1 expression and Apaf-1 expression (P = 0.001). In univariate survival analysis,patients with GLUT1 expression demonstrated poor overall survival and disease-free survival (P = 0.047 and P = 0.021,respectively,log-rank test). CONCLUSION:GLUT1 expression was frequently increased in adenocarcinomas and metastatic lesions. GLUT1 expression was significantly correlated with poorer clinicopathologic phenotypes and survival of patients with colorectal adenocarcinomas.

关键词： Adenocarcinoma Colorectum Glucose transporter 1 Apoptosis-activating factor-1 Prognosis Survival

Wave prediction in a port using a fully nonlinear Boussinesq wave model

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Acta Oceanologica Sinica 2019年第7期38卷 36-47页

作者： Young-Kwang Choi seung-Nam Seo Jin-Yong Choi Fengyan Shi Kwang-soon Park Civil and Architectural Engineering Department KEPCO Engineering and ConstructionGimcheon-si 39660Republic of Korea Task Force for Construction of RV ISABU Support Facility Korea Institute of Ocean Science and TechnologyBusan Metropolitan City 49111Republic of Korea Operational Oceanography Research Center Korea Institute of Ocean Science and TechnologyBusan Metropolitan City 49111Republic of Korea Center for Applied Coastal Research University of DelawareNewark DE 19716USA

A wave forecasting system using FUNWAVE-TVD which is based on the fully nonlinear Boussinesq equations by Chen(2006)was developed to provide an accurate wave prediction in the Port of Busan,South *** system is linked to the Korea Operational Oceanographic System(KOOS)developed by Park et al.(2015).The computational domain covers a region of 9.6 km×7.0 km with a grid size of 2 m in both directions,which is sufficient to resolve short waves and dominant sea *** total number of grid points exceeds 16 millions,making the model computational *** provide real-time forecasting,an interpolation method,which is based on pre-calculated results of FUNWAVE-TVD and SWAN forecasting results at the FUNWAVE-TVD offshore boundary,was used.A total of 45 cases were pre-calculated,which took 71 days on 924 computational cores of a Linux cluster *** wave generation and propagation from the deep water were computed using the SWAN in *** results provided a boundary condition for the FUNWAVE-TVD forecasting *** verify the model,wave observations were conducted at three locations inside the port in a time period of more than 7 months.A model/model comparison between FUNWAVE-TVD and SWAN was also carried *** is found that,FUNWAVE-TVD improves the forecasting results significantly compared to SWAN which underestimates wave heights in sheltered areas due to incorrect physical mechanism of wave diffraction,as well as large wave heights caused by wave reflections inside the port.

关键词： real-time wave forecasting FUNWAVE-TVD SWAN KOOS wave observations wave diffraction