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Clinical significance of the leptin and leptin receptor expressions in prostate tissues

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Asian Journal of Andrology 2008年第6期10卷 923-928页

作者： Jung Hoon Kim Shin Young Lee soon chul myung Young Sun Kim Tae-Hyoung Kim Mi Kyung Kim Departments of Urology College of Medicine Chung-Ang University Seoul 140-757 Korea Departments of Pathology College of Medicine Chung-Ang University Seoul 140-757 Korea

Aim： To evaluate the expression of leptin and leptin receptor in benign prostatic hyperplasia （BPH） and prostate cancer （PCa）, and to investigate whether they are associated with the development and progression of PCa. Methods： hnmunohistochemical staining was performed to examine the expression of leptin and leptin receptor in BPH and PCa. PCa was divided into three groups： localized PCa, locally advanced PCa and metastatic PCa. The positive staining was identified and the percentage of the positive staining was graded. We also assessed the relationship between both the Gleason score and body mass index （BMI） and PCa. Results： The percentage of the leptin expression in PCa was significantly higher than that in BPH （P 〈 0.01）. For the PCa group, the expressed levels of leptin showed a considerable correlation with localized PCa and metastatic PCa （P 〈 0.05）. Leptin receptor, however, did not reveal a definite difference between BPH and PCa. The expression of leptin indicated a significant difference between well-differentiated PCa （Gleason score ≤6） and poorly differentiated PCa （Gleason score 8-10）（P 〈 0.05）. The relation between the leptin expression level in PCa and the BMI was not remarkable （P = 0.447）. Conclusion： Our results suggest that leptin might have a promoting effect on the carcinogenesis and progression of PCa.

关键词： leptin leptin receptor prostatic neoplasms

Krill oil ameliorates benign prostatic hyperplasia by regulating G-phase cell cycle arrest and altering signaling pathways and benign prostatic hyperplasia-associated markers

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Food Science and Human Wellness 2023年

作者： Hoon Kim Jongyeob Kim Byungdoo Hwang Sang Yong Park Ji-Yeon Shin Eun Byeol Go Jae Sil Kim Youngjin Roh soon chul myung Seok-Joong Yun Yung Hyun Choi Wun-Jae Kim Sung-Kwon Moon Department of Biochemistry College of Oriental Medicine Dongeui University Institute of Urotech Cheongju Department of Urology Chungbuk National University Cheongju SD Biotechnologies 66 Magojungang 8-ro 1-gil Gangseo-gu Department of Food and Nutrition Chung-Ang University Department of Urology College of Medicine Chung-Ang University

Krill oil (KO) exhibits various biological activities， such as anti-inflammatory and antitumor effects. However， the inhibitory effects of benign prostatic hyperplasia (BPH) in vitro and in vivo have not yet been studied. This study investigated the anti-BPH effects of KO extracted by an enzymatic hydrolysis method. KO treatment inhibited the proliferation of WMPY-1 and BPH-1 cells by induction of G0/G1phase arrest through the modulation of positive and negative regulators in both prostate cell types. KO treatment stimulated phosphorylation of JNK and p38 signaling. In addition， KO changed the expression of BPH-related markers (5α-reductase， androgen receptor， FGF， Bcl-2， and Bax) and the activity of the proliferation-mediated NF-κB binding motif. KO-induced levels of proliferation-mediated molecules of prostate cells were attenuated in the presence of siRNA-specific p-38 (si-p38) and JNK (si-JNK). Furthermore， the administration of KO alleviated prostate size and weight and the cell layer thickness of prostate glands in a testosterone enanthate-induced BPH rat model. KO treatment altered the level of dihydrotestosterone in serum and the expression levels of BPH-related markers in prostate tissues. Finally， KO-mediated inhibition of prostatic growth was validated by histological analysis. These results suggest that KO has an inhibitory effect on BPH in prostate cells in vitro and in vivo. Thus， KO might be a potential prophylactic or therapeutic agent for patients with BPH.

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Methane Emission from Rice Fields:Necessity for Molecular Approach for Mitigation

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Rice science 2024年第2期31卷 159-178页

作者： Sujeevan RAJENDRAN Hyeonseo PARK Jiyoung KIM soon Ju PARK Dongjin SHIN Jong-Hee LEE Young Hun SONG Nam-Chon PAEK chul Min KIM Department of Horticulture Industry Wonkwang UniversityIksan 54538Korea Plant Molecular Biology and Biotechnology Research Center Gyeongsang National UniversityJinju 52828Korea Department of Southern Area Crop Science National Institute of Crop ScienceMiryang 50424Korea Department of Agricultural Biotechnology Seoul National UniversitySeoul 08826Korea Department of Plant Science Plant Genomics and Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoul 08826Korea

Anthropogenic methane emissions are a leading cause of the increase in global averagetemperatures,often referred to as global *** soils play a significant role in methaneproduction,where the anaerobic conditions promote the production of methane by *** fields contribute a considerable portion of agricultural methane emissions,as riceplants provide both factors that enhance and limit methane *** plants harbor both methaneproducingand methane-oxidizing *** from rice roots provide source for methaneproduction,while oxygen delivered from the root aerenchyma enhances methane *** haveshown that the diversity of these microorganisms depends on rice cultivars with some genes characterizedas harboring specific groups of microorganisms related to methane ***,there is still aneed for research to determine the balance between methane production and oxidation,as rice plantspossess the ability to regulate net methane *** agronomical practices,such as fertilizerand water management,have been employed to mitigate methane ***,studiescorrelating agronomic and chemical management of methane with productivity are ***,evidences for breeding low-methane-emitting rice varieties are scattered largely due to the absence ofcoordinated breeding *** has indicated that phenotypic characteristics,such as rootbiomass,shoot architecture,and aerenchyma,are highly correlated with methane *** reviewdiscusses available studies that involve the correlation between plant characteristics and *** emphasizes the necessity and importance of breeding low-methane-emitting rice varieties inaddition to existing agronomic,biological,and chemical *** review also delves into the idealphenotypic and physiological characteristics of low-methane-emitting rice and potential breeding techniques,drawing from studies conducted

关键词： methane emission rice breeding aerenchyma greenhouse gas radial oxygen loss

韩国人群中细胞色素CYP17A1 CYP3A4和CYP3A43基因的多态性与前列腺癌致癌风险和侵袭力的关系

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Asian Journal of Andrology 2015年第2期17卷 285-291,I0010页

作者： Jun Hyun Han Yong Seong Lee Hae Jong Kim Shin Young Lee soon chul myung Department of Urology Hallym University Dongtan Sacred Heart Hospital Hwaseong-si 445-170 Korea Department of Urology Hallym University Kangnam Sacred Heart Hospital Seoul 150-950 Korea Advanced Urogenital Disease Research Center Chung-Ang University College of Medicine Seoul 156-756 Korea Research Institute for Translational System Biomics Chung-Ang University College of Medicine Seoul 156-756 Korea Department of Urology Seoul Medical Center Seoul 131-865 Korea Department of Urology Chung-Ang University Hospital Seou1156-756 Korea.

In this study, we evaluated genetic variants of the androgen metabolism genes CYP17A1, CYP3A4, and CYP3A43 to determine whether they play a role in the development of prostate cancer （PCa） in Korean men. The study population included 240 pathologically diagnosed cases of PCa and 223 age-matched controls. Among the 789 singie-nucleotide polymorphism （SNP） database variants detected, 129 were reported in two Asian groups （Han Chinese and Japanese） in the HapMap database. Only 21 polymorphisms of CYP17A1, CYP3A4, and CYP3A43 were selected based on linkage disequilibrium in Asians （d = 1）, locations （SNPs in exons were preferred）, and amino acid changes and were assessed. In addition, we performed haplotype analysis for the 21 SNPs in CYP17A1, CYP3A4, and CYP3A43 genes. To determine the association between genotype and haplotype distributions of patients and controls, logistic analyses were carried out, controlling for age. Twelve sequence variants and five major haplotypes were identified in CYP17A1. Five sequence variants and two major haplotypes were identified in CYP3A4. Four sequence variants and four major haplotypes were observed in CYP3A43. CYP17A1 haplotype-2 （Ht-2）（odds ratio [OR], 1.51; 95% confidence interval [Cl], 1.04-2,18） was associated with PCa susceptibility. CYP3A4 Ht-2 （OR. 1.87; 95% CI. 1.02-3.43） was associated with PCa metastatic potential according to tumor stage, rs17115149 （OR： 1.96; 95% Ch 1.04-3.68） and CYP17A1 Ht-4 （OR： 2.01; 95% Ch 1.07-4.11） showed a significant association with histologic aggressiveness according to Gleason score. Genetic variants of CYP17A1 and CYP3A4 may play a role in the development of PCa in Korean men.

关键词： androgens CYP17A1 CYP3A4 CYP3A43 genetics prostatic neoplasms

The effects ofα-defensin 1 on the contraction and relaxation of rat bladder

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The effects ofα-defensin 1 on the contraction and relaxatio...

健康男性的胰岛素抵抗指数、肥胖、血清PSA水平间的关系

第十七届全国泌尿外科学术会议

作者： Tae-Hyoung Kim Shin Young Lee soon-chul myung Bongsuk Shim Department of Urology Chung-Ang University HospitalSeoulKorea Department of Urology Ewha Womans University School of MedicineSeoulKorea

Introduction Defensins,cysteine-rich cationic polypeptides released from neutrophils,have powerful antimicrobial *** have been recently shown to affect the contractility of smooth *** the present study,we investigated...

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Asian Journal of Andrology 2010年第3期12卷 400-404,I0011页

作者： June Hyun Han Yong Taec Lee Kyung Won Kwak Seung Hyun Ahn In Ho Chang soon chul myung Seung Young Oh Yong-Seong Lee Wonyong Kim Young-Woo Jin Tae-In Choi Sook Hee Sung Department of Urology KEPCO Medical Foundation Hanil General Hospital Seou1132-703 Korea Department of Urology Chung-Ang University Hospital Seoul 140-757 Korea Department of Urology Hyundae General Hospital Namyangju 472-865 Korea Department of Urology Hallym University Hangang Sacred Heart Hospital Seoul 150-719 Korea Department of Microbiology College of Medicine Chung-Ang University Seoul 156- 756 Korea Radiation Health Research Institute Korea Hydro ＆ Nuclear Power Co. LTD Seoul 132-703 Korea

The purpose of this study was to determine the relationship between insulin resistance, obesity and serum prostate-specific antigen （PSA） levels in healthy men with serum PSA level below 4 ng mL-1. The men included in the study cohort were 11 827 healthy male employees of the Korea Hydro and Nuclear Power Co., LTD who had undergone medical checkups including fasting glucose, fasting insulin and serum PSA between January 2003 and December 2008. Insulin resistance was calculated by homeostasis model assessment （HOMA [fasting glucose × fasting insulin]/22.5） and quantitative insulin sensitivity check index （QUICK/; 1/[log （fasting insulin）＋ log （fasting glucose）]）. Age-adjusted body mass index （BMI） was significantly increased according to increasing quartile of insulin resistance as determined by HOMA and QUICKI, respectively, in analysis of variance （ANOVA） test and Duncan＇s multiple comparison test （P 〈 0.001）, but age-adjusted serum PSA concentration was significantly decreased according to increasing quartile of insulin resistance as determined by HOMA and QUICK/（P 〈 0.001）. Age, BMI, insulin resistance by HOMA or QUICK/were significantly independent variables to serum PSA level in a multivariate linear regression analysis （P 〈 0.001）. Insulin resistance was a significant independent variable to serum PSA level along with BMI. Insulin resistance and BMI were negatively correlated with serum PSA level in healthy men. Insulin resistance was positively correlated with BMI.

关键词： body mass index insulin resistance metabolic syndrome X obesity prostate-specific antigen

Metasurface doublet-integrated bidirectional grating antenna enabling enhanced wavelength-tuned beam steering

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Photonics Research 2022年第1期10卷 248-255页

作者： WOO-BIN LEE chul-soon IM CHANGYI ZHOU BISHAL BHANDARI DUK-YONG CHOI SANG-SHIN LEE Department of Electronic Engineering Kwangwoon UniversitySeoul 01897Republic of Korea Nano Device Application Center Kwangwoon UniversitySeoul 01897Republic of Korea Laser Physics Centre Research School of PhysicsAustralian National UniversityCanberraACT 2601Australia

We propose and demonstrate an optical phased-array-based bidirectional grating antenna(BDGA) in silicon nitride *** BDGA is integrated with a miniaturized all-dielectric metasurface doublet(MD) formed on a glass *** BDGA device,which takes advantage of alternately feeding light to its ports in opposite directions,is presumed to effectively provide a doubled wavelength-tuned steering efficiency compared to its unidirectional *** MD,which is based on vertically cascaded convex and concave metalenses comprising circular hydrogenated amorphous silicon nanopillars,is meticulously placed atop the BDGA chip to accept and deflect a beam emanating from the emission area,thereby boosting the beam-steering *** manufactured BDGA could achieve an enhanced beam-steering efficiency of 0.148 deg/nm as well as a stable spectral emission response in the wavelength range of 1530–1600 *** deploying a fabricated MD atop the silicon photonic BDGA chip,the steering efficiency was confirmed to be boosted by a factor of ~3.1,reaching 0.461 deg/nm,as intended.

关键词： beam thereby directions

Optimal design considering structural efficiency of compressed natural gas fuel storage vessels for automobiles

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Transactions of Nonferrous Metals Society of China 2011年第A1期21卷 199-204页

作者： myung-Chang KANG Hyung Woo LEE chul KIM National Core Research Center for Hybrid Materials Solution Pusan National University Research Institute of Mechanical Technology Pusan National University

The shape and thickness of the dome were investigated with the aim of optimizing the type II CNG storage vessels by using a finite element analysis technique. The thickness of the liners and reinforcing materials was optimized based on the requirement of the cylinder and dome parts. In addition, the shape of the dome, which is most suitable for type II CNG storage vessels, was proposed by a process of review and analysis of various existing shapes, and the minimum thickness was established in this sequence: metal liners, composite materials and dome parts. Therefore, the new proposed shape products give a mass reduction of 4.8 kg(5.1%)

关键词：储存容器优化设计天然气燃料结构效率有限元分析技术压缩汽车最小厚度

Electrochemical and electronic properties of nitrogen doped fullerene and its derivatives for lithium-ion battery applications

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Journal of Energy Chemistry 2018年第2期27卷 528-534页

作者： Parveen Sood Ki chul Kim Seung soon Jang School of Materials Science and Engineering Georgia Institute of Technology Atlanta CA 30332-0245. USA Department of Chemical Engineering Konkuk University Seoul 05029 Republic of Korea Institute for Electronics and Nonotechnology Georgia Institute of Technology Atlanta GA 30332-0245 USA Parker H. Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology Atlanta GA 30332-0245 USA

We have studied the redox potentials and electronic properties of C60 and C59N using density functional theory method. It is found that doping C60 with one nitrogen atom results in a slight increase in redox potential. Next, we have also studied C59N functionalized with various redox-active oxygen containing functional groups and strongly electron withdrawing functional groups. It is found that the intrinsic electronic structure of the molecule is the major determinant of the redox potential. Our DFT calculations show that the electron affinity to redox potential of functionalized C59N is correlated with the LUMO of the systems very well. This is the first systematic study on the redox properties and electronic structures of N-doped C60 systems.

关键词： DFT Redox potential C60 Doping Li-ion battery