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Kim H, Noh H. Signal Amplification by Spatial Concentration for Immunoassay on Cellulose Media. Small 2024; 20:e2307556. [PMID: 38012537 DOI: 10.1002/smll.202307556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/13/2023] [Indexed: 11/29/2023]
Abstract
Immunoassay is one of the most common bioanalytical techniques from lab-based to point-of-care settings. Over time, various approaches have been developed to amplify signals for greater sensitivity. However, the need for effective, versatile, and simple signal amplification methods persists yet. This paper presents a novel signal amplification method for immunoassay that utilizes spatial concentration of a cellulose-based plate possessing sensor transducers, specifically gold nanoparticles. By modifying the dimensions of the plate, the density of nanoparticles increased, resulting in intensified color signals. The coating material, polydopamine, which is utilized to protect the gold nanoparticles. Chemical changes in nanocomposites are characterized using scanning electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. The application of this method to colorimetric quantification demonstrated great consistency across various concentrations of nanoparticles, with better reliability at lower concentration ranges. A model immunoassay is designed to evaluate the analytical performance. As a result, this method successfully corrected a false-negative result with a lowered Kd of 0.509 pmol per zone. This method shows strong signal enhancement capability that can correct false-negative signals in the immunoassays, with potential benefits including versatility, simplicity, low cost, and the ability to operate multiple plates simultaneously.
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Affiliation(s)
- Hyeokjung Kim
- Department of Optometry, Seoul National University of Science and Technology, Seoul, 01811, South Korea
| | - Hyeran Noh
- Department of Optometry, Seoul National University of Science and Technology, Seoul, 01811, South Korea
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Lee H, Noh H. Advancements in Nanogels for Enhanced Ocular Drug Delivery: Cutting-Edge Strategies to Overcome Eye Barriers. Gels 2023; 9:718. [PMID: 37754399 PMCID: PMC10529109 DOI: 10.3390/gels9090718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 08/29/2023] [Accepted: 09/02/2023] [Indexed: 09/28/2023] Open
Abstract
Nanomedicine in gel or particle formation holds considerable potential for enhancing passive and active targeting within ocular drug delivery systems. The complex barriers of the eye, exemplified by the intricate network of closely connected tissue structures, pose significant challenges for drug administration. Leveraging the capability of engineered nanomedicine offers a promising approach to enhance drug penetration, particularly through active targeting agents such as protein peptides and aptamers, which facilitate targeted release and heightened bioavailability. Simultaneously, DNA carriers have emerged as a cutting-edge class of active-targeting structures, connecting active targeting agents and illustrating their potential in ocular drug delivery applications. This review aims to consolidate recent findings regarding the optimization of various nanoparticles, i.e., hydrogel-based systems, incorporating both passive and active targeting agents for ocular drug delivery, thereby identifying novel mechanisms and strategies. Furthermore, the review delves into the potential application of DNA nanostructures, exploring their role in the development of targeted drug delivery approaches within the field of ocular therapy.
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Affiliation(s)
| | - Hyeran Noh
- Department of Optometry, Seoul National University of Science and Technology, Gongnung-ro 232, Nowon-gu, Seoul 01811, Republic of Korea;
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Han A, Kim K, Choi H, Noh H, Cho IJ, Lim S, Lee J. 19P Usefulness of Hounsfield unit on computed tomography, serum neutrophil to lymphocyte ratio, and their combination as prognostic factor in patients with breast cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.03.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Kang Y, Kim HJ, Lee SH, Noh H. Paper-Based Substrate for a Surface-Enhanced Raman Spectroscopy Biosensing Platform-A Silver/Chitosan Nanocomposite Approach. Biosensors (Basel) 2022; 12:266. [PMID: 35624567 PMCID: PMC9138243 DOI: 10.3390/bios12050266] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/15/2022] [Accepted: 04/20/2022] [Indexed: 06/15/2023]
Abstract
Paper is a popular platform material in all areas of sensor research due to its porosity, large surface area, and biodegradability, to name but a few. Many paper-based nanocomposites have been reported in the last decade as novel substrates for surface-enhanced Raman spectroscopy (SERS). However, there are still limiting factors, like the low density of hot spots or loss of wettability. Herein, we designed a process to fabricate a silver-chitosan nanocomposite layer on paper celluloses by a layer-by-layer method and pH-triggered chitosan assembly. Under microscopic observation, the resulting material showed a nanoporous structure, and silver nanoparticles were anchored evenly over the nanocomposite layer. In SERS measurement, the detection limit of 4-aminothiophenol was 5.13 ppb. Furthermore, its mechanical property and a strategy toward further biosensing approaches were investigated.
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Affiliation(s)
- Yuri Kang
- Department of Optometry, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea; (Y.K.); (H.J.K.)
| | - Hyeok Jung Kim
- Department of Optometry, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea; (Y.K.); (H.J.K.)
| | - Sung Hoon Lee
- Corning Technology Center Korea, Corning Precision Materials Co., Ltd., 212 Tangjeong-ro, Asan 31454, Korea
| | - Hyeran Noh
- Department of Optometry, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea; (Y.K.); (H.J.K.)
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea
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Park J, Lee S, Lee E, Noh H, Seo Y, Lim H, Shin H, Lee I, Jung H, Na T, Kim SD. Probabilistic ecological risk assessment of heavy metals using the sensitivity of resident organisms in four Korean rivers. Ecotoxicol Environ Saf 2019; 183:109483. [PMID: 31362159 DOI: 10.1016/j.ecoenv.2019.109483] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 06/25/2019] [Accepted: 07/25/2019] [Indexed: 06/10/2023]
Abstract
The environment has been continuously exposed to heavy metals by various routes, from both natural and artificial sources. In particular, heavy metals in water can affect aquatic organisms adversely, even at very low concentrations, and can lead to the disturbance of the ecosystem balance and biodiversity. Ecological risk assessments are conducted to protect the environment from such situations, primarily by deriving the predicted no-effect concentration (PNEC) from the species sensitivity distribution (SSD). This study developed the SSDs based on the species living in Korean freshwater for four heavy metals including cadmium (Cd), copper (Cu), lead (Pb), and zinc (Zn). The species compositions of the SSDs were examined, and three types of PNECs were derived by applying different assessment factors (AF). In addition, the occurrence and concentrations of heavy metals in Korean rivers were investigated, and the ecological risk assessment was carried out to compare the SSDs with the environmental concentrations. The SSDs were developed using a sufficient number of species, but the missing data of plants and insects provided an incomplete species composition. The results show that Cd and Pb in the environmental concentrations of rivers would not cause any risk to aquatic organisms from the derived PNEC. However, some organisms might be adversely affected by the concentrations of Zn, and a small amount of risk was expected under the conservative PNEC. The distribution of Cu in the rivers was not considered to be safe for aquatic organisms because the average environmental concentrations potentially affected the proportion of the SSD, and the environmental concentrations exceeded the PNECs. The concentrations of Cu and Zn in industrial waters indicated a considerable risk to aquatic organisms, and the probability of exceeding the PNECs appeared to be quite high. Therefore, this study indicates that additional actions and parallel field studies are required based on the risk posed to aquatic organisms by Cu and Zn in four Korean rivers.
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Affiliation(s)
- Jinhee Park
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Sunhong Lee
- Water Quality Research Center, K-water Convergence Institute, 200 Sintanjin-ro, Daedeok-gu, Daejeon, 34350, Republic of Korea
| | - Eunhee Lee
- Department of Environmental Engineering, Sangji University, 83 Sangjidae-gil, Wonju-si, Gangwon-do, 26339, Republic of Korea
| | - Hyeran Noh
- Han-river Environment Research Center, National Institute of Environmental Research, 42 Dumulmeori-gil 68beon-gil, Yangseo-myeon, Yangpyeong-gun, Gyeonggi-do, 12585, Republic of Korea
| | - Yongchan Seo
- Department of Environmental Engineering, Sangji University, 83 Sangjidae-gil, Wonju-si, Gangwon-do, 26339, Republic of Korea
| | - HyunHee Lim
- Drug Abuse Research Center, Kongju National University, 56 Gongjudaehak-ro, Kongju-si, Chungcheongnam-do, 32588, Republic of Korea
| | - HoSang Shin
- Department of Environmental Education, Kongju National University, 56 Gongjudaehak-ro, Kongju-si, Chungcheongnam-do, 32588, Republic of Korea
| | - Injung Lee
- Nakdong River Environment Research Center, National Institute of Environment Research, 24 Pyeongni 1-gil, Dasan-myeon, Goryeong-gun, Gyeongsangbuk-do, 40103, Republic of Korea
| | - Heejung Jung
- Yeongsan River Environment Research Center, 5 Cheomdangwagi-ro 208 beon-gil, Buk-gu, Gwangju, 61011, Republic of Korea
| | - Taewoong Na
- Yeongsan River Environment Research Center, 5 Cheomdangwagi-ro 208 beon-gil, Buk-gu, Gwangju, 61011, Republic of Korea
| | - Sang D Kim
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea.
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Abstract
Laboratory support for low-resource regions is a rising global issue. As microbiological contamination is closely associated with other issues like food safety, water supply sustainability, and public health, bacterial assessments in this setting need to be improved. Herein, we demonstrate a paper-based diagnostic device for point-of-need testing, in which fecal-indicating Escherichia coli and highly pathogenic E. coli are detected by duplex coloration. This device was functionalized by mixing different chromogenic substrates that reflect each bacterial enzymatic phenotype. In the final part of the paper, we describe this microbiological diagnostic system tested with bacteria-contaminated food samples. The device sensitivity was shown to have greatly reduced the total analysis time (below to 4 h) when combined with an enrichment amplification procedure. Notably, this paper device successfully detected 10 cfu/mL of target bacteria in a contaminated milk sample. Our diagnostic system shows acceptable accuracy, short analysis time, and a user-friendly interface, thereby eliminating demands for high-end equipment and a highly trained staff. We expect that this diagnostic system will be a sustainable solution in supporting microbiological or clinical laboratories in low-income countries.
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Affiliation(s)
| | - Chanho Kwon
- Research Institute, Biomax Co., Ltd., Seoul Technopark, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea
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Pahk K, Noh H, Joung C, Song H, Kim S, Kim W. A Novel Cd147 Inhibitor Sp-8356 Attenuates Plaque Progression And Stabilizes Vulnerable Plaque In Apoe-Deficient Mice. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
Managing food contamination from bacteria has been an ongoing issue in the public health and industrial fields. Enzymatic substrates possessing optical properties, e.g. fluorescence or color manifestation, are widely exploited in pathogenic/non-pathogenic bacteria culture methods. Recently, various chromogenic substrates have been utilized in the development of point-of-care diagnostic tools. Herein, four types of chromogenic substrates were exploited to develop paper-based sensors for major foodborne pathogens. We designed a compact sized three-dimensional paper device with a simple user interface. By inserting functional layers in the middle of multilayers, pre-lysis and pH regulation steps were excluded and the analysis time was subsequently reduced, while only one sample droplet was needed for the whole analysis process. After the enzymatic reactions had proceeded, target-specific colors appeared. When it was combined with enrichment, 101 cfu mL-1 of pathogens were successfully detected in 4-8 hours, while those in milk samples were readily sensed in 12 hours. The proposed bacteria sensor exhibited great advantages of low cost, portability and simple operation, while showing a respectable limit-of-detection as low as 101 cfu mL-1 and below. Significantly, we emphasize that it takes fewer steps than existing methods and provides a reduced analysis time owing to the layer functionalization.
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Affiliation(s)
- Hyeok Jung Kim
- Department of Optometry, Seoul National University of Science and Technology (Seoultech), 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea.
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Noh H. UNDERSTANDING COMMUNITY-DWELLING OLDER ADULTS’ VIEWS OF ADVANCE CARE PLANNING. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H Noh
- The University of Alabama School of Social Work, Tuscaloosa, Alabama, United States
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Kwak J, Cho Y, Lee Y, Noh H, Roh S. ADVANCE CARE PLANNING AMONG AMERICAN INDIANS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J Kwak
- University of Texas at Austin
| | - Y Cho
- Zilber School of Public Health, University of Wisconsin-Milwaukee
| | - Y Lee
- School of Social Work, San Francisco State University
| | - H Noh
- The University of Alabama School of Social Work
| | - S Roh
- Department of Social Work, University of South Dakota
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Noh H, Viallon V, Chajes V, Ferrari P, Freisling H. Biomaker patterns of fatty acids and other fat-soluble biocompounds in blood to indicate nuts intake in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. Rev Epidemiol Sante Publique 2018. [DOI: 10.1016/j.respe.2018.05.301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Lee H, Lee S, Jeon J, Kwon S, Noh H, Han D, Yun S, Song D. Thymoglobulin Versus Basiliximab Induction Therapy in Low-Risk Kidney Transplant Recipients: A Single-Center Experience. Transplant Proc 2018; 50:1285-1288. [DOI: 10.1016/j.transproceed.2018.02.088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 02/17/2018] [Indexed: 10/14/2022]
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Hong JY, Kim CW, Noh H, Lee DH, Kim SE, Lee SJ. The Effect of Animation-Assisted Informed Consent Using Tablet Personal Computer for Contrast-Enhanced Computed-Tomography in Emergency Department. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791201900404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Introduction Informed consent is essential patient's right even in overcrowded emergency department (ED). We compared the effect of animation-assisted informed consent using tablet PC with the standard informed consent for contrast-enhanced computed-tomography (CT) in ED. Methods We included 150 patients scheduled to undergo contrast-enhanced CT in ED from November 2010 through January 2011. Participants were randomised to either animation-assisted information (AAI) (n=75) or standard verbal information (SVI) group (n=75). AAI was provided by tablet personal computer (PC); and SVI by clinicians. All participants completed 10-point scale questionnaires after the CT scan. The questionnaires included two main categories – understanding and satisfaction of informed consent. Results Participants in the AAI group had a better understanding of purpose (8.95±1.48 vs. 8.32±1.88, p=0.026) and methods (8.93±1.43 vs. 8.37±1.83, p=0.048) of CT scans compared to participants in the SVI group. Every score in satisfaction categories was significantly higher in the AAI group. In the SVI group, relatively low-educated participants had a lower score in understanding when compared with university-educated participants (7.53±2.28 vs. 8.52±1.40, p=0.029). Regardless of education level, understanding score was high in the AAI group (8.73±1.27 vs. 8.57±1.50, p=0.71). Conclusions Participants receiving animation assisted informed consent with tablet PC shows a higher degree of understanding and satisfaction compared with patients receiving standard verbal informed consent. Particularly in patients with lower education, animation-assisted informed consent may be better for understanding of contrast-enhanced CT.
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Affiliation(s)
- JY Hong
- Chung-Ang University College of Medicine, Department of Emergency Medicine, Chung-Ang University Medical Center, Heukseok-dong, Dongjak-gu, Seoul, 156-755, Korea
| | - CW Kim
- Chung-Ang University College of Medicine, Department of Emergency Medicine, Chung-Ang University Medical Center, Heukseok-dong, Dongjak-gu, Seoul, 156-755, Korea
| | | | - DH Lee
- Chung-Ang University College of Medicine, Department of Emergency Medicine, Chung-Ang University Medical Center, Heukseok-dong, Dongjak-gu, Seoul, 156-755, Korea
| | - SE Kim
- Chung-Ang University College of Medicine, Department of Emergency Medicine, Chung-Ang University Medical Center, Heukseok-dong, Dongjak-gu, Seoul, 156-755, Korea
| | - SJ Lee
- Chung-Ang University College of Medicine, Department of Emergency Medicine, Chung-Ang University Medical Center, Heukseok-dong, Dongjak-gu, Seoul, 156-755, Korea
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Kim SE, Lee SJ, Noh H, Lee DH, Kim CW. Is There Any Difference in Cardiopulmonary Resuscitation Performance According to Different Instructional Models of Cardiopulmonary Resuscitation Education for Junior and Senior High School Students? HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791101800602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective This study aims to determine whether or not cardiopulmonary resuscitation (CPR) skills differ according to different instructional models for CPR education and training for junior and senior high school students. Methods This was a prospective and randomised study including 519 junior and senior high school students. After the lecture on CPR, students practiced the skill on the manikin. Group 1 used model 1 and Group 2 used model 2 for practical training and practical skills and CPR performance quality were evaluated. Results Data from skill tests were analysed in 229 students in group 1 and 210 students in group 2. The total score of sequence skill tests was 17.8±2.0 points. During 2 cycles, no chest elevation was observed in 33.3% and was significantly lower in group 1. There were no significant differences in the frequency of proper ventilation and in ventilation volume between the 2 groups. Excessive ventilation was more frequently observed in group 1 and insufficient ventilation was observed more frequently in group 2. The percentage of the frequency of a proper chest compression rate was 80.5±31.2% and there were no significant differences in proper and insufficient depths, mean rate and recoil of the chest in chest compression between the 2 groups. Conclusions There were differences in CPR skills according to different CPR training manikins. Therefore, certain conditions seem to be considered in selection of instructional models for CPR psychomotor skills. (Hong Kong j.emerg.med. 2011;18:375-382)
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Affiliation(s)
- SE Kim
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
| | - SJ Lee
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
| | - H Noh
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
| | - DH Lee
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
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Noh H, Guo Y, Kim G. FACTORS AFFECTING KOREAN OLDER ADULTS’ WILLINGNESS TO RECEIVE LIFE-SUSTAINING TREATMENTS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H. Noh
- The University of Alabama, Tuscaloosa, Alabama
| | - Y. Guo
- The University of Alabama, Tuscaloosa, Alabama
| | - G. Kim
- The University of Alabama, Tuscaloosa, Alabama
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Noh H, Anderson K, Ford C, Guo Y, Allen R, Halli-Tierney A, Burgio K. COMMUNITY-DWELLING BLACK AND WHITE OLDER ADULTS’ PERCEPTIONS OF ADVANCE CARE PLANNING. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H. Noh
- University of Alabama, Tuscaloosa, Alabama
| | | | - C.D. Ford
- University of Alabama, Tuscaloosa, Alabama
| | - Y. Guo
- University of Alabama, Tuscaloosa, Alabama
| | - R.S. Allen
- University of Alabama, Tuscaloosa, Alabama
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Bugno J, Hsu HJ, Pearson RM, Noh H, Hong S. Size and Surface Charge of Engineered Poly(amidoamine) Dendrimers Modulate Tumor Accumulation and Penetration: A Model Study Using Multicellular Tumor Spheroids. Mol Pharm 2016; 13:2155-63. [DOI: 10.1021/acs.molpharmaceut.5b00946] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jason Bugno
- Department
of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago, Illinois 60612, United States
| | - Hao-Jui Hsu
- Department
of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago, Illinois 60612, United States
| | - Ryan M. Pearson
- Department
of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago, Illinois 60612, United States
| | - Hyeran Noh
- Department
of Optometry, Seoul National University of Science and Technology, Seoul 139-743, Korea
| | - Seungpyo Hong
- Department
of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago, Illinois 60612, United States
- Departments
of Integrated OMICs for Biomedical Science and Pharmacy and Underwood
International College, Yonsei University, Seoul 120-749, Korea
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Kim HJ, Jeong S, Noh H. Quantitative Determination of Tear Glucose Using Paper Based Microfluidic Devices. Journal of the Korean Chemical Society 2015. [DOI: 10.5012/jkcs.2015.59.1.88] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Affiliation(s)
- MJ Kim
- Boa Dental Clinic; Seoul Republic of Korea
| | - H Noh
- Department of Dental Hygiene; Wonju College of Medicine; Yonsei University; Wonju-si Kangwon-do Republic of Korea
| | - HY Oh
- Department of Dental Hygiene; Suwon Sceince College; Hwaseong-si Gyeonggi-do Republic of Korea
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Seo Y, Ji YW, Lee SM, Shim J, Noh H, Yeo A, Park C, Park MS, Chang EJ, Lee HK. Activation of HIF-1α (hypoxia inducible factor-1α) prevents dry eye-induced acinar cell death in the lacrimal gland. Cell Death Dis 2014; 5:e1309. [PMID: 24967971 PMCID: PMC4611733 DOI: 10.1038/cddis.2014.260] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Revised: 04/21/2014] [Accepted: 04/22/2014] [Indexed: 12/22/2022]
Abstract
The pathogenesis of immune-mediated lacrimal gland (LG) dysfunction in Sjögren's syndrome has been thoroughly studied. However, the majority of dry eye (DE) is not related to Sjögren type, and its pathophysiology remains unclear. The purpose of this study was to determine and investigate the protective mechanisms against DE stress in mice. DE induced prominent blood vessel loss without apoptosis or necrosis in the LG. Autophagic vacuoles, distressed mitochondria, and stressed endoplasmic reticulum were observed via electron microscopy. Immunoblotting confirmed the increase in autophagic markers. Glycolytic activities were enhanced with increasing levels of succinate and malate that, in turn, activated hypoxia-inducible factor (HIF)-1α. Interestingly, the areas of stable HIF-1α expression overlapped with COX-2 and MMP-9 upregulation in LGs of DE-induced mice. We generated HIF-1α conditional knockout (CKO) mice in which HIF-1α expression was lost in the LG. Surprisingly, normal LG polarities and morphologies were completely lost with DE induction, and tremendous acinar cell apoptosis was observed. Similar to Sjögren's syndrome, CD3+ and CD11b+ cells infiltrated HIF-1α CKO LGs. Our results show that DE induced the expression of HIF-1α that activated autophagy signals to prevent further acinar cell damage and to maintain normal LG function.
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Affiliation(s)
- Y Seo
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea
| | - Y W Ji
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea
| | - S M Lee
- 1] Schephens Eye Research Institute, Harvard Medical School, Boston, MA, USA [2] Department of Ophthalmology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Gyeonggi-do, Korea
| | - J Shim
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea
| | - H Noh
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea
| | - A Yeo
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea
| | - C Park
- Clinical Trials Center, Yonsei University College of Medicine, Seodaemun-gu, Seoul, Korea
| | - M S Park
- Clinical Trials Center, Yonsei University College of Medicine, Seodaemun-gu, Seoul, Korea
| | - E J Chang
- Department of Anatomy and Cell Biology, University of Ulsan College of Medicine, Seoul, Korea
| | - H K Lee
- 1] Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea [2] Institute of Corneal Dystrophy Research, Yonsei University College of Medicine, Seodaemun-gu, Seoul, Korea
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Abstract
WHAT IS KNOWN AND OBJECTIVE Mucopolysaccharidoses (MPSs) are a group of rare inherited metabolic diseases caused by genetic defects in the production of lysosomal enzymes. MPSs are clinically heterogeneous and are characterized by progressive deterioration in visceral, skeletal and neurological functions. This article aims to review the classification and pathophysiology of MPSs and discuss current therapies and new targeted agents under development. METHODS A Medline search through PubMed was performed for relevant articles and treatment guidelines on MPSs published in English for years 1970 to September of 2013 inclusive. The references listed in the identified articles, prescribing information of the drugs approved for the treatment of MPSs, as well as recent clinical trial information posted on Clinicaltrials.gov website, were reviewed. RESULTS AND DISCUSSION Until recently, supportive care was the only option available for the management of MPSs. In the early 2000s, enzyme replacement therapy (ERT) was approved by the United States Food and Drug Administration (FDA) for the treatment of MPS I, II and VI. Clinical trials of ERT showed substantial improvements in patients' somatic symptoms; however, no benefit was found in the neurological symptoms because the enzymes do not readily cross the blood-brain barrier (BBB). Haematopoietic stem cell transplantation (HSCT), another potentially curative treatment, is not routinely advocated in clinical practice due to its high risk profile and lack of evidence for efficacy, except in preserving cognition and prolonging survival in young patients with severe MPS I. In recent years, substrate reduction therapy (SRT) and gene therapy have been rapidly gaining greater recognition as potential therapeutic avenues. WHAT IS NEW AND CONCLUSION Enzyme replacement therapy (ERT) is effective for the treatment of many somatic symptoms, particularly walking ability and respiratory function, and remains the mainstay of MPS treatment. The usefulness of HSCT has not been established adequately for most MPSs. Although still under investigation, SRT and gene therapy are promising MPS treatments that may prevent the neurodegeneration not affected by ERT.
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Affiliation(s)
- H Noh
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon, Korea; Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon, Korea
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Noh H, Seo H. Age-dependent effects of valproic acid in Alzheimer's disease (AD) mice are associated with nerve growth factor (NGF) regulation. Neuroscience 2014; 266:255-65. [PMID: 24568732 DOI: 10.1016/j.neuroscience.2014.02.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 02/08/2014] [Accepted: 02/11/2014] [Indexed: 11/25/2022]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease that causes cognitive impairment. Major pathophysiological AD characteristics include numerous senile plaque, neurofibrillary tangles, and neuronal loss in the specific regions of patients' brains. In this study, we aimed to understand disease stage-dependent regulation of histone modification for the expression of specific markers in plasma and the hippocampus of in vivo AD model. Since the control of histone acetylation/deacetylation has been studied as one of major epigenetic regulatory mechanisms for specific gene expression, we detected the effects of histone deacetylase (HDAC) inhibitor on marker expression and neuroprotection in in vivo AD model mice. We determined the effects of valproic acid (VPA, HDAC inhibitor), on the levels of cytokines, secreted form of APP (sAPP), nerve growth factor (NGF), and cognitive function in Tg6799 AD mice in three different disease stages (1month: pre-symptomatic; 5months: early symptomatic; and 10months: late-symptomatic stages). VPA decreased the mRNA levels of nuclear factor kappaB (NF-κB) and IL-1ß in the plasma of Tg6799 mice compared to vehicle control at 10months of age. VPA increased the protein levels of NGF in the hippocampus of Tg6799 mice at 5 and 10months of age. In addition, VPA decreased escape latencies of Tg6799 mice at 5 and 10months of age in Morris water maze assessment. Taken together, HDAC inhibition is a promising therapeutic target for AD and it needs to be considered in an age-dependent and/or stage-dependent manner.
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Affiliation(s)
- H Noh
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - H Seo
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea.
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Noh H, Lee J, Choi E, Han A. Abstract P6-06-25: Usefulness of pretreatment NLR as prognostic factor of late recurrence, 5-year after primary treatment. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p6-06-25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
Prognostic factor and predictive factors are well established in early-stage breast cancer, but less is known about recurrence, especially 5-year after primary treatment. While mortality of breast cancer is from organic dysfunction with metastatic disease, not from the diseased breast itself, still we do not have adequate information about metastatic disease as we do about primary breast cancer itself.
The aim of this study is to investigate of usefulness of pretreatment NLR(neutrophil to lymphocyte ratio) as prognostic factor that can tell risk of recurrence 5- year after primary treatment.
Patients and methods
A retrospective review of invasive breast cancer patients surgically resected between January 2001 and December 2007. Exclusion criteria were as followings: patients with recurrence or death within 5yrs.
Results
A total of 301 patients were included and 13 patients experienced with recurrence after 5 years.
Table 1. Patients' characteristics Total (n = 301) N (%)Age*48.8(±11.4)Age ≤3525(8.3)35< ≤50165(54.8)50<111(36.9)Histology Ductal270(89.7)Lobular7(2.3)Others24(8.0)Tumor size (cm)*2.73(±1.64)T stage T1126(41.9)T2158(52.5)T317(5.6)N stage N0199(66.1)N167(22.3)N220(6.6)N311(3.7)unknown4(1.3)Histologic grade I72(23.9)II110(36.5)III70 (23.3)unknown49(16.3)Estrogen receptor Negative111(36.9)Positive185(61.5)unknown5(1.6)Progesterone receptor Negative129(42.9)Positive167(55.5)Unknown5(1.6)HER-2 Negative196(65.1)Positive98(32.6)unknown7(2.3)Molecular subtype Luminal A136(45.2)Luminal B66(21.9)HER-2 enriched32(10.6)Triple negative60(20.0)unknown7(2.3)Late recur Yes13(4.3)No288(95.7)*mean±SD
Overall average of NLR value was 2.16, median value was 1.83. The average NLR were 2.80±1.68 in patients with recurrences occurred after 5 years and 2.13±1.15 in patients without recurrence. The NLR cutoff value of 1.83 was determined by median value.
In 1.83≤NLR group has a higher incidence of recurrence after 5 years compared with NLR<1.83 group (8yr DFS 99.2% vs. 93.3%, p = 0.021). Especially in luminal A(ER (+) or PR (+), HER-2(-)), 1.83≤NLR group has a higher incidence of recurrence after 5 years compared with NLR<1.83 group (8yr DFS 100% vs. 87.0%, p = 0.015).
Conclusion
We found that pretreatment NLR is associated with late recurrence that occurs after five years. And we suggest that NLR could be used as one of the prognostic factor that can tell about late recurrence, 5-year after primary treatment.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P6-06-25.
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Affiliation(s)
- H Noh
- Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Korea
| | - J Lee
- Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Korea
| | - E Choi
- Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Korea
| | - A Han
- Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Korea
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Kutlay S, Kurultak I, Nergizoglu G, Erturk S, Karatan O, Azevedo P, Pinto CT, Pereira CM, Marinho A, Vanmassenhove J, Hoste E, Glorieux G, Dhondt A, Vanholder R, Van Biesen W, Rei S, Aleksandrova I, Kiselev V, Ilynskiy M, Berdnikov G, Marchenkova L, Vanmassenhove J, Hoste E, Glorieux G, Dhondt A, Vanholder R, Van Biesen W, Daher EF, Vieira APF, Souza JB, Falcao FS, Costa CR, Fernandes AACS, Mota RMS, Lima RSA, Silva Junior GB, Ulusal Okyay G, Erten Y, Er R, Aybar M, Inal S, Tekbudak M, Aygencel G, Onec K, Bali M, Sindel S, Soto K, Fidalgo P, Papoila AL, Vanmassenhove J, Hoste E, Glorieux G, Dhondt A, Vanholder R, Van Biesen W, Lentini P, Zanoli L, Granata A, Contestabile A, Basso A, Berlingo G, de Cal M, Pellanda V, Dell'Aquila R, Fortrie G, Stads S, van Bommel J, Zietse R, Betjes MG, Berrada A, Arias C, Riera M, Orfila MA, Rodriguez E, Barrios C, Peruzzi L, Chiale F, Camilla R, Martano C, Cresi F, Bertino E, Coppo R, Klimenko A, Villevalde S, Efremovtseva M, Kobalava Z, Pipili C, Ioannidou S, Kokkoris S, Poulaki S, Tripodaki ES, Parisi M, Papastylianou A, Nanas S, Wang YN, Cheng H, Chen YP, Wen Z, Li X, Shen P, Zou Y, Lu Y, Ma X, Chen Y, Ren H, Chen X, Chen N, Yue T, Cheng H, Chen YP, Elmamoun S, Wodeyar H, Goldsmith C, Abraham A, Wootton A, Ahmed S, Hill C, Curtis S, Miller A, Hine T, Stevens KK, Patel RK, Mark PB, Delles C, Jardine AG, Wilflingseder J, Heinzel A, Mayer P, Perco P, Kainz A, Mayer B, Oberbauer R, Huang TM, Wu VC, Park DJ, Bae EJ, Kang YJ, Cho HS, Chang SH, Lentini P, Zanoli L, Granata A, Contestabile A, Berlingo G, Basso A, Pellanda V, de Cal M, Stramana R, Cognolato D, Baiocchi M, Dell'Aquila R, Chiella BM, Pilla C, Balbinotto A, Antunes VH, Heglert A, Collares FM, Thome FS, Gjyzari A, Thereska N, Xhango O, Xue J, Chen MC, Wang L, Chen YJ, Sun XZ, An WS, Kim ES, Son YK, Kim SE, Kim KH, Oh YJ, Tsai HB, Ko WJ, Chao CT, Fortrie G, Stads S, Aarnoudse AJL, Zietse R, Betjes MG, Peride I, Radulescu D, Niculae A, Ciocalteu A, Checherita AI, Kao CC, Wang CY, Lai CF, Huang TM, Chen HH, Wu VC, Ko WJ, Wu KD, Klaus F, Goldani JC, Cantisani G, Zanotelli ML, Carvalho L, Klaus D, Garcia VD, Keitel E, Hussaini SM, Rao PN, Kul A, Ye N, Zhang Y, Cheng H, Chen YP, Baines R, Westacott R, Trew J, Kirtley J, Selby N, Carr S, Xu G, Steffgen J, Blaschke S, Brun-Schulte-Wissing N, Pagel P, Huber F, Mapes J, Jaehnige A, Pestel S, Deray G, Rouviere O, Bacigalupo L, Maes B, Hannedouche T, Vrtovsnik F, Rigothier C, Billiouw JM, Campioni P, Marti-Bonmati L, Gao YM, Li D, Cheng H, Chen YP, Woo S, Lee J, Noh H, Kwon SH, Han DC, Hetherington L, Valluri A, McQuarrie E, Fleming S, Geddes C, Bell S, MacKinnon B, Bell S, Patton A, Sneddon J, Donnan P, Vadiveloo T, Marwick C, Bennie M, Davey P, Yasuda H, Tsuji N, Tsuji T, Iwakura T, Ohashi N, Kato A, Fujigaki Y, Sasaki S, Kawarazaki H, Shibagaki Y, Kimura K, Lingaraju U, Rajanna S, Radhakrishnan H, Parekh A, Sreedhar CG, Sarvi R, Rainone F, Merlino L, Ritchie JP, Kalra PA, Daher EF, Vieira APF, Jacinto CN, Abreu KLS, Silva Junior GB, Neves M, Baptista JP, Rodrigues L, Pinho J, Teixeira L, Pimentel J, Gonzalez Sanchidrian S, Rangel Hidalgo G, Cebrian Andrada C, Deira Lorenzo J, Marin Alvarez J, Garcia-Bernalt Funes V, Gallego Dominguez S, Labrador Gomez P, Castellano Cervino I, Novillo Santana R, Gomez-Martino Arroyo J, Kim Y, Choi BS, Kim YO, Yoon SA, Lin MC, Wu VC, Ko WJ, Wu KD, Wang WJ, Melo MJ, Lopes JA, Raimundo M, Fragoso A, Antunes F, Martin-Moreno PL, Varo N, Restituto P, Sayon-Orea C, Garcia-Fernandez N, Leite Filho NCV, Souza LEO, Cavalcante RM, Silva Junior GB, Morais BM, Leite TT, Silva SL, Kubrusly M, Daher EF, Jung YS, Kim YN, Shin HS, Rim H, Bentall A, Al-Baaj F, Williamson S, Cheshire S, Jelakovic M, Ivkovic V, Laganovic M, Karanovic S, Pecin I, Premuzic V, Vukovic Lela I, Vrdoljak A, Fucek M, Cvitkovic A, Juric D, Bozina N, Bitunjac M, Leko N, Abramovic Baric M, Matijevic V, Jelakovic B, Ullah A, Exarchou K, Archer T, Anijeet H, Brown R, Ahmed S, Zhang Y, Ye N, Cheng H, Cheng YP, Rocha JCG, Gushiken da Silva T, de Castro PF, Kioroglo PS, Branco Martins JP, Tzanno-Martins C, Biesenbach P, Luf F, Fleischmann E, Grunberger T, Druml W, Gaipov A, Turkmen K, Toker A, Solak Y, Cicekler H, Ucar R, Kilicaslan A, Gormus N, Tonbul HZ, Yeksan M, Turk S, Monteburini T, Cenerelli S, Santarelli S, Boggi R, Tazza L, Bossola M, Ferraresi M, Merlo I, Giovinazzo G, Quercia AD, Gai M, Leonardi G, Anania P, Guarena C, Cantaluppi V, Pacitti A, Biancone L, Hissa PNG, Daher EDF, Liborio AB, Thereza BMF, Mendes CCP, Sousa ARO. AKI - human studies. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tsuchiya K, Shiohira S, Sugiura H, Suzuki M, Okano K, Nitta K, Kaesler N, Immendorf S, Ouyang C, Carmeliet P, Floege J, Kruger T, Schlieper G, Georgescu A, Kalucka J, Olbrich S, Baumgartl J, Hackenbeck T, Eckardt KU, Weidemann A, Chmielewski S, Olejnik A, Sikorski K, Heemann U, Wesoly J, Bluyssen H, Baumann M, Mekahli D, Decuypere JP, Missiaen L, Levtchenko E, De Smedt H, Stasi A, Castellano G, Gigante M, Intini A, Pontrelli P, Divella C, Curci C, Grandaliano G, Gesualdo L, Vizza D, Perri A, Lofaro D, Toteda P, Lupinacci S, Leone F, Gigliotti P, Papalia T, Bonofiglio R, Vatazin AV, Astakhov PV, Zulkarnaev AB, Parodi E, Verzola D, D'Amato E, Viazzi F, Gonnella A, Garneri D, Pontremoli R, Garibotto G, Chen TH, Chen CH, Chen YC, Sue YM, Cheng CY, Guiying L, Ying L, Pozzoli S, Lino M, Delli Carpini S, Ferrandi M, Zerbini G, Simonini M, Zagato L, Molinari I, Citterio L, Manunta P, Feng X, Pan X, Wang W, Chen N, Chen YX, Wang WM, Chen N, Tanaka S, Yano S, Sugimoto T, Noh H, Yu MR, Kim HJ, Woo SA, Cho YJ, Kwon SH, Jeon JS, Han DC, Shimizu H, Yisireyili M, Nishijima F, Niwa T, Koh ES, Chung S, Kim SJ, Kim SJ, Yoon HE, Park CW, Chang YS, Shin SJ, Seong EY, Rhee H, Shin MJ, Yang BY, Jung YS, Lee DW, Lee SB, Kwak IS, Kim IY, Sancho-Martinez SM, Prieto-Garcia L, Lopez-Hernandez FJ, Lopez-Novoa JM, Bae EH, Choi HS, Joo SY, Kim IJ, Kim CS, Choi JS, Ma SK, Lee J, Kim SW, Humanes B, Sonia C, Jado J, Mojena M, Lara J, Alvarez-Sala L, Tejedor A, Lazaro A, Wada Y, Iyoda M, Matsumoto K, Shindo-Hirai Y, Kuno Y, Yamamoto Y, Suzuki T, Shibata T, Akizawa T, Lee DW, Kwak IS, Lee SB, Seong EY, Faubel S, Edelstein CL, Cano Penalver JL, de Frutos Garcia S, Griera Merino M, Luengo Rodriguez A, Garcia Jerez A, Bohorquez Magro L, Medrano D, Calleros Basilio L, Rodriguez Puyol M, Prieto-Garcia L, Sancho-Martinez SM, Lopez-Hernandez FJ, Lopez-Novoa JM, Thilo F, Liu Y, Tepel M, Hsu HH, Chen KH, Hung CC, Yang CW, Endlich N, Lin JL, Pavenstadt H, Rodrigues Diez RR, Mezzano S, Ruiz-Ortega M, Rodrigues Diez R, Lavoz C, Nakayama Y, Fukami K, Yamagishi SI, Obara N, Yokoro M, Ando R, Kaida Y, Toyonaga M, Kaifu K, Takeuchi M, Ueda S, Okuda S, Daenen K, Hoylaerts MF, Bammens B, Liu J, Zhong F, Dai Q, Xu L, Wang W, Chen N, Zaravinos A, Deltas CC. Cell signalling. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bertoli S, Stucchi A, Ciurlino D, Musetti C, Meuwese CL, Carrero JJ, Cabezas-Rodriguez I, Heimburger O, Barany P, Lindholm B, Qureshi AR, Ripsweden J, Dekker FW, Stenvinkel P, Eser B, Buyukbakkal M, Yayar O, Yildirim T, Ercan Z, Kali A, Erdogan B, Haspulat A, Merhametsiz O, Akdag S, Ayli M, Keles H, Kendi Celebi Z, Karatan O, Ates K, Lambie M, Chess J, Bankart MJ, Lee HB, Noh H, Do JY, Dorval M, Topley N, Davies SJ, van Diepen ATN, van Esch S, Krediet RT, Struijk DG. Peritoneal dialysis - clinical. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
We analysed retrospectively the risk factors leading to femoral overgrowth after flexible intramedullary nailing in 43 children (mean age 7.1 years (3.6 to 12.0)) with fractures of the shaft of the femur. We reviewed their demographic data, mechanism of injury, associated injuries, the type and location of the fractures, the nail–canal diameter (NCD) ratios and femoral overgrowth at a mean follow-up of 40.7 months (25.2 to 92.7). At that time, the children were divided into two groups, those with femoral overgrowth of < 1 cm (Group 1), and those with overgrowth of ≥ 1 cm (Group 2). The mean femoral overgrowth of all patients was 0.6 cm at final follow-up. Overgrowth of ≥ 1 cm was noted in 11 children (25.6%). The NCD ratio was significantly lower in Group 2 than in Group 1, with an odds ratio of 30.0 (p = 0.003). We believe that a low NCD ratio is an indicator of an unstable configuration with flexible intramedullary nailing, and have identified an association between a low NCD ratio and femoral overgrowth resulting in leg-length discrepancy after flexible intramedullary nailing in paediatric femoral shaft fractures. Cite this article: Bone Joint J 2013;95-B:254–8.
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Affiliation(s)
- S-S. Park
- Asan Medical Center, University of Ulsan
College of Medicine, Department of Orthopaedic
Surgery, 88, Olympic-ro
43-gil, Songpa-gu, Seoul
138-736, Korea
| | - H. Noh
- Asan Medical Center, University of Ulsan
College of Medicine, Department of Orthopaedic
Surgery, 88, Olympic-ro
43-gil, Songpa-gu, Seoul
138-736, Korea
| | - M. Kam
- Asan Medical Center, University of Ulsan
College of Medicine, Department of Orthopaedic
Surgery, 88, Olympic-ro
43-gil, Songpa-gu, Seoul
138-736, Korea
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Noh H, Barnthip N, Parhi P, Vogler EA. Electrophoretic implementation of the solution-depletion method for measuring protein adsorption, adsorption kinetics, and adsorption competition among multiple proteins in solution. Methods Mol Biol 2013; 1025:157-166. [PMID: 23918336 DOI: 10.1007/978-1-62703-462-3_12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The venerable solution-depletion method is perhaps the most unambiguous method of measuring solute adsorption from solution to solid particles, requiring neither complex instrumentation nor associated interpretive theory. We describe herein an SDS-gel electrophoresis implementation of the solution--depletion method for measuring protein adsorption and protein-adsorption kinetics. Silanized-glass particles with different surface chemistry/energy and hydrophobic sepharose-based chromatographic media are used as example adsorbents. Electrophoretic separation enables quantification of adsorption competition among multiple proteins in solution for the same adsorbent surface, demonstrated herein by adsorption--competition kinetics from binary solution.
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Affiliation(s)
- Hyeran Noh
- Department of Optometry and Vision Science, Seoul National University and Technology, Seoul, South Korea
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Han A, Noh H, Lee J. Abstract P6-07-40: Initial Neutrophil-to-Lymphocyte ratio in primary breast cancer patients: a simple and useful biomarker as prognostic factor. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p6-07-40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Increasing neutrophil/lymphocyte ratios (NLR) on preoperative blood tests have been associated with worse survival of patients with colorectal, gastric, hepatocellular, pancreatic and lung cancer. However the utility of NLR to predict mortality in breast cancer patients has not been studied. The aim of our study was to determine whether the NLR is predictive of disease specific mortality in breast cancer and subtype-adjusted prognostic effect in breast cancer patients.
Methods: We retrospectively identified all the patients with primary breast cancer diagnosed at Yonsei University Wonju Medical School between January 2000 and June 2011 who underwent primary surgery and completed all phase of their treatment. Breast cancer with infiltrating ductal histology was included and divided into 4 subtypes: Luminal A, Luminal B, Her2-enriched, and basal type. Each immunohistochemical characteristics are as followings: Luminal A: ER and/or PgR positive and negative Her2, Luminal B: ER and/or PgR positive with positive HER2, Her2-enriched: negative ER and PR with positive Her2, and triple negative as basal.
Results: Patients with NLR≥2.5 showed significantly lower 5-year, 10-year breast cancer specific survival than patients with NLR<2.5. (5-year survival; 88.6% vs. 96.4%, p = 0.009, 10-year survival; 84.3% vs. 92.2%, p = 0.006). Cox proportional multivariate hazard model for cancer-specific mortality showed that patients with NLR≥2.5 has hazard ratio 4.71 with 95% confidence interval 1.77–12.53. Further analysis was done according to stratified patients' subgroup with intrinsic subtype. In Luminal A subtype, patients with NLR≥2.5 showed higher mortality rate(p = 0.014), while NLR≥2.5 failed to show statistical significance in the other subtype such as Luminal B, Her2 enriched, and triple negative subtype.
Conclusion: Increased preoperative NLR is a significant prognostic factor in breast cancer specific survival and relevant in Luminal A subtype. This study shows that NLR could be a useful prognostic factor for breast cancer specific survival. And this study suggests that different factors could contribute as prognostic factor to each subtype, such as NLR was significant prognostic factor in Luminal A, while we couldn't find increased NLR is significant in other subtypes.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P6-07-40.
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Affiliation(s)
- A Han
- Yonsei Univeristy Wonju Medical School, Wonju, Gangwon, Republic of Korea
| | - H Noh
- Yonsei Univeristy Wonju Medical School, Wonju, Gangwon, Republic of Korea
| | - J Lee
- Yonsei Univeristy Wonju Medical School, Wonju, Gangwon, Republic of Korea
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Noh H, Lee DH. Vascularisation of myringo-/tympanoplastic grafts in active and inactive chronic mucosal otitis media: a prospective cohort study. Clin Otolaryngol 2012; 37:355-61. [DOI: 10.1111/coa.12014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Hu Q, Lu YY, Noh H, Hong S, Dong Z, Ding HF, Su SB, Huang S. Interleukin enhancer-binding factor 3 promotes breast tumor progression by regulating sustained urokinase-type plasminogen activator expression. Oncogene 2012; 32:3933-43. [PMID: 22986534 PMCID: PMC3819929 DOI: 10.1038/onc.2012.414] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Revised: 07/25/2012] [Accepted: 07/25/2012] [Indexed: 12/21/2022]
Abstract
Sustained urokinase-type plasminogen activator (uPA) expression is detected in aggressive breast tumors. Although uPA can be transiently upregulated by diverse extracellular stimuli, sustained, but not transiently upregulated uPA expression contributes to breast cancer invasion/metastasis. Unfortunately, how sustained uPA expression is achieved in invasive/metastatic breast cancer cells is unknown. Here, we show that sustained and transiently upregulated uPA expression are regulated by distinct mechanisms. Using a collection of transcription factor-targeted small-interfering RNAs, we discovered that interleukin enhancer-binding factor 3 (ILF3) is required for sustained uPA expression. Two discrete mechanisms mediate ILF3 action. The first is that ILF3 activates uPA transcription by binding to the CTGTT sequence in the nucleotides -1004∼-1000 of the uPA promoter; the second is that ILF3 inhibits the processing of uPA mRNA-targeting primary microRNAs (pri-miRNAs). Knockdown of ILF3 led to significant reduction in in vitro cell growth/migration/invasion and in vivo breast tumor development. Importantly, immunohistochemistry (IHC) showed that nuclear ILF3, but not cytoplasmic ILF3 staining correlates with elevated uPA level and higher grades of human breast tumor specimens. Nuclear localization of ILF3 highlights the role of ILF3 in sustained uPA expression as a transcription activator and pri-miRNA processing blocker. In conclusion, this study shows that ILF3 promotes breast tumorigenicity by regulating sustained uPA expression.
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Affiliation(s)
- Q Hu
- Department of Biochemistry and Molecular Biology, Georgia Health Sciences University, Augusta, GA 30912, USA
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Miyazaki N, Matsumoto J, Alberici F, Palmisano A, Maritati F, Oliva E, Buzio C, Vaglio A, Mjoen G, Norby GE, Vikse BE, Svarstad E, Rune B, Knut A, Szymczak M, Kuzniar J, Kopec W, Marchewka Z, Klinger M, Arrizabalaga P, Silvarino R, Sant F, Espinosa G, Sole M, Cervera R, Gude D, Chennamsetty S, Demin A, Kozlov V, Lisukov I, Kotova O, Sizikov A, Sergeevicheva V, Demina L, Borjesson O, Wendt M, Avik A, Qureshi AR, Bratt J, Miller EJ, Gunnarsson I, Bruchfeld A, Sugiyama K, Hasegawa M, Yamamoto K, Hayashi H, Koide S, Murakami K, Tomita M, Yoshida S, Yuzawa Y, Yew S, Jayne D, Westman K, Hoglund P, Flossman O, Mahr A, Luqmani R, Robson J, Thervet E, Levi C, Guiard E, Roland M, Nochy D, Daniliuc C, Guillevin L, Mouthon L, Jacquot C, Karras A, Kimura Y, Morita H, Debiec H, Yamada H, Miura N, Banno S, Ronco P, Imai H, Shin DH, Famee D, Koo HM, Han SH, Choi KH, Yoo TH, Kang SW, Fofi C, Fofi C, Scabbia L, Festuccia F, Stoppacciaro A, Mene' P, Shimizu A, Fukui M, MII A, Kaneko T, Masuda Y, Iino Y, Katayama Y, Fukuda Y, Kuroki A, Matsumoto K, Akizawa T, Jurubita R, Ismail G, Bobeica R, Rusu E, Zilisteanu D, Andronesi A, Motoi O, Ditoiu V, Copaci I, Voiculescu M, Irazabal MV, Eirin A, Lieske JC, Beck LH, Dillon JJ, Nachman PH, Sethi S, Erickson SB, Cattran DC, Fervenza FC, Svobodova B, Hruskova Z, Janatkova I, Jancova E, Tesar V, Seo MS, Kwon SH, Lee EB, You JY, Hyun YK, Woo SA, Park MY, Choi SJ, Jeon JS, Noh H, Kim JG, Han DC, Hwang SD, Choi TY, Jin SY, Kwon SH, Loiacono E, Loiacono E, Defedele D, Puccinelli MP, Camilla R, Gallo R, Peruzzi L, Rollino C, Beltrame G, Ferro M, Vergano L, Campolo F, Amore A, Coppo R, Knoop T, Vikse BE, Svarstad E, Bostad L, Leivestad T, Bjorneklett R, Teranishi J, Yamamoto R, Nagasawa Y, Shoji T, Iwatani H, Okada N, Moriyama T, Yamauchi A, Tsubakihara Y, Imai E, Rakugi H, Isaka Y, Koo HM, Doh FM, Kim SJ, Kang SW, Choi KH, Han DS, Han SH, Suzuki Y, Matsuzaki K, Suzuki H, Okazaki K, Yanagawa H, Maiguma M, Muto M, Sato T, Horikoshi S, Novak J, Hotta O, Tomino Y, Gutierrez* E, Zamora I, Ballarin J, Arce Y, Jimenez S, Quereda C, Olea T, Martinez-Ara J, Segarra A, Bernis C, Garcia A, Goicoechea M, Garcia de Vinuesa S, Rojas J, Praga M, Ristovska V, Petrushevska G, Grcevska L, Knoop T, Vikse BE, Svarstad E, Bostad L, Leivestad T, Bjorneklett R, Satake K, Shimizu Y, Mugitani N, Suzuki H, Suzuki Y, Horikoshi S, Honda S, Shibuya K, Shibuya A, Tomino Y, Papale M, Rocchetti MT, DI Paolo S, Suriano IV, D'apollo A, Vocino G, Montemurno E, Varraso L, Grandaliano G, Gesualdo L, Huerta A, Bomback AS, Canetta PA, Radhakrishnan J, Herlitz L, Stokes B, D'agati V, Markowitz G, Appel GB, Ristovska V, Grcevska L, Mouna H, Nasr BD, Mrabet I, Ahmed L, Sabra A, Mohamed Ammeur F, Mezri E, Habib S, Innocenti M, Pasquariello A, Pasquariello G, Mattei P, Bottai A, Fumagalli G, Bozzoli L, Samoni S, Cupisti A, Caldin B, Hung J, Repizo L, Malheiros DM, Barros R, Woronik V, Giammarresi C, Bono L, Ferrantelli A, Tortorici C, Licavoli G, Rotolo U, Huang X, Wang Q, Shi M, Chen W, Liu Z, Scarpioni R, Cantarini L, Lazzaro A, Ricardi M, Albertazzi V, Melfa L, Concesi C, Vallisa D, Cavanna L, Gungor G, Ataseven H, Demir A, Solak Y, Biyik M, Ozturk B, Polat I, Kiyici A, Ozer Cakir O, Polat H, Martinez-Ara J, Castillo I, Carreno V, Aguilar A, Madero R, Hernandez E, Bernis C, Bartolome J, Gea F, Selgas R, El Aggan HAM, El Banawy HS, Wagdy E, Tchebotareva N, LI O, Bobkova I, Kozlovskaya L, Varshavskiy V, Golicina E, Chen Y, Gong Z, Chen X, Tang L, Zhou J, Cao X, Wei R, Koo EH, Koo EH, Park JH, Kim HK, Kim MS, Jang HR, Lee JE, Huh W, Kim DJ, Oh HY, Kim YG, Tchebotareva N, Bobkova I, Kozlovskaya L, LI O, Eskova O, Shvetsov M, Golytsina E, Varshavskiy V, Popova O, Quaglia M, Monti S, Fenoglio R, Menegotto A, Airoldi A, Izzo C, Rizzo MA, Dianzani U, Stratta P, Vaglio A, Vaglio A, Alberici F, Gianfreda D, Buzio C. Primary and secondary glomerulonephritis I. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kang YS, Cha JJ, Hyun YY, Lee MH, Song HK, Cha DR, Bang K, Jeong J, Shin JH, Kang JH, Yang J, Ahn C, Kim JH, Toledo K, Merino A, GonzaLez-Burdiel L, Perez-Saez MJ, Aguera M, Ramirez R, Del Castillo D, Aljama P, Kahveci A, Tugtepe H, Asicioglu E, Nalcaci S, Birdal G, Arikan H, Koc M, Tuglular S, Kaya H, Ozener C, Kocak G, Azak A, Huddam B, Astarci HM, Can M, Duranay M, Tayama Y, Hasegawa H, Takayanagi K, Matsuda A, Shimizu T, Asakura J, Iwashita T, Okazaki S, Hatano M, Kiba T, Ogawa T, Mitarai T, Sanchez JE, Nunez M, Gonzalez I, Fernandez-Vina A, Pelaez B, Quintana A, Rodriguez C, Park KA, Kim EJ, Choi SJ, Kim NR, Park MY, Kim JK, Hwang SD, Cotovio P, Rocha A, Carvalho MJ, Teixeira L, Mendonca D, Rodrigues A, Cabrita A, Ito M, Wu HY, Peng YS, Huang JW, Hu FC, Hung KY, Tsai TJ, Wu KD, Temiz G, Sahin G, Degirmenci N, Ozkurt S, Yalcin AU, Rufino M, Garcia C, Vega N, Macia M, Rodriguez A, Maceira B, Hernandez D, Lorenzo V, Levallois J, Nadeau-Fredette AC, Labbe AC, Laverdiere M, Ouimet D, Vallee M, Matsuda A, Katou H, Tayama Y, Iwanaga M, Ogawa T, Shimizu T, Asakura J, Noiri C, Kanouzawa K, Hasegawa H, Mitarai T, Karakan S, Sezer S, Ozdemir Acar N, Haberal M, Ueda A, Nagai K, Morimoto M, Hirayama A, Yoh K, Saito C, Yamagata K, Parikova A, Vlijm A, deGraaff M, Brabcova I, Viklicky O, Krediet R, Nagamine N, Katoh KI, Yoshitake O, Cho KH, Jung SY, Do JY, Park JW, Yoon KW, Hwang SD, Kim NR, Kim EJ, Chung CH, Park MY, Choi SJ, Kim JK, Mravljak M, Karas B, Pajek J, Pintar T, Benedik M, Gucek A, Tomo T, Kadota JI, Tsuchida K, Minakuchi J, Yamanaka M, Numata A, Masakane I, Fujimori A, Kawanishi H, Naito H, Bordignon J, Manonelles A, Andujar A, Gonzalez-Segura C, Gonzalez MT, Glavas-Boras S, Zlopasa G, Boras S, Smalcelj R, Slavicek J, Knezevic N, Puretic Z, Prasad N, Gupta A, Sinha A, Saxena A, Sharma RK, Kaul A, Ramos R, Gonzalez MT, Vera M, Garcia I, Barbosa F, Teixido J, Garcia C, Cuxart M, Gonzalez C, de la Cruz JJ, Fukuoka K, Sinozaki M, Kato N, Oba I, Harada K, Kanai H, Ota K, Do JY, Kang SW, Cho KH, Park JW, Shin KL, Kim YH, Yoon KW, Prasad N, Gupta A, Sinha A, Sharma RK, Kaul A, Saxena A, Schneider K, Huszar T, Bator B, Di Napoli A, Franco F, Salvatori MF, Di Lallo D, Guasticchi G, Hassan S, Kristal B, Khazim K, Hassan F, Hassan K, Korabecna M, Krizkova V, Kocova J, Tonar Z, Opatrna S, Gaiao S, Beco A, Oliveira A, Santos-Araujo C, Pestana M, Denizot A, Milliard B, Kahveci A, Asicioglu E, Arikan H, Tuglular S, Ozener C, Hsu BG, Lai YH, Wang CH, Fang TC, Yesil H, Paydas S, Balal M, Cinkir U, Sertdemir Y, Santos-Araujo C, Oliveira A, Beco A, Sousa J, Silva N, Santos D, Pestana M, Oliveira A, Beco A, Santos C, Pestana M, Vera M, Fontsere N, Maduell F, Arias M, Bergada E, Cases A, Campistol JM, Grzelak T, Czyzewska K, Mortazavi M, Seirafian S, Halabian M, Emami Naini A, Farajzadegan Z, Moinzade F, Golabchi K, Portoles J, Moreno F, Lopez-Sanchez P, Gomez M, Corchete E, del Peso G, Bajo MA, Rivera M, Arribas G, Ferreira AC, Fernandes V, Sousa J, Vila Lobos A, Nolasco F, Martino F, di Loreto P, Rodighiero MP, Crepaldi C, Ronco C, Asicioglu E, Kahveci A, Nalcaci S, Arikan H, Tuglular S, Ozener C, Cavallini M, Centi A, Broccoli ML, Rocca AR, Testorio M, Borzacca B, Pugliese F, Russo GE, Tokgoz B, Ucar C, Kocyigit I, Somdas MA, Unal A, Vural A, Sipahioglu MH, Oymak O, Utas C, Teixeira L, Rodrigues A, Carvalho MJ, Cabrita A, Mendonca D, Micha T, Takouli L, Karaitianou A, Koupari G, Trompouki S, Arvanitis D, Vlassopoulos D, Ferreira AC, Fernandes V, Vila Lobos A, Nolasco F, Kahveci A, Nalcaci S, Asicioglu E, Birdal G, Arikan H, Tuglular S, Ozener C, Carvalho C, Beco A, Oliveira A, Santos C, Pestana M, Hiramatsu M, Ishida M, Tonozuka Y, Mikami H, Yamanari T, Momoki N, Onishi A, Maruyama K, Ito M, Masakane I, Takahashi T, Chung SH, Han DC, Noh H, Jeon JS, Kwon SH, Lindholm B, Lee HB, Tekeli L, Inal S, Derici U, Celik N, Kiran G, Derin O, Durunay M, Erten Y, Cho JH, Do JY, Park SH, Kim CD, Choi JY, Ryu HM, Kim YL, Kawahara K, Ishihara Y, Iwadou H, Uemura N, Kinashi M, Oobayashi S, Pilcevic D, Tadic-Pilcevic J, Kovacevic Z, Maksic D, Paunic Z, Mitrovic M, Mijuskovic M, Petrovic M. Peritoneal dialysis. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Noh H, Kim HJ, Yu MR, Ryu JH, Kim JH, Kim E, Han DC, Bedino G, Rampino T, Gregorini M, Valsania T, Rocca C, Corradetti V, Pattonieri EF, Carrara C, Bosio F, Piotti G, Soccio G, Esposito P, Albertini R, Dal Canton A, Schaefer I, Himmelseher E, Haller H, Schiffer M, Ryu M, Mulay SR, Miosge N, Gross O, Anders HJ, Zarzecki M, Adamczak M, Wystrychowski A, Gross ML, Ritz E, Wiecek A. Experimental pathology. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Liew SF, Forster J, Noh H, Schreck CF, Saranathan V, Lu X, Yang L, Prum RO, O'Hern CS, Dufresne ER, Cao H. Short-range order and near-field effects on optical scattering and structural coloration. Opt Express 2011; 19:8208-8217. [PMID: 21643071 DOI: 10.1364/oe.19.008208] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We have investigated wavelength-dependent light scattering in biomimetic structures with short-range order. Coherent backscattering experiments are performed to measure the transport mean free path over a wide wavelength range. Overall scattering strength is reduced significantly due to short-range order and near-field effects. Our analysis explains why single scattering of light is dominant over multiple scattering in similar biological structures and is responsible for color generation.
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Affiliation(s)
- S F Liew
- Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA.
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Kim JH, Noh H, Kang JH, Lee BS, Choi J, Park K, Han DK. Characteristics of PLLA films blended with PEG block copolymers as additives for biodegradable polymer stents. Biomed Eng Lett 2011. [DOI: 10.1007/s13534-011-0004-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Kao P, Parhi P, Krishnan A, Noh H, Haider W, Tadigadapa S, Allara DL, Vogler EA. Volumetric interpretation of protein adsorption: interfacial packing of protein adsorbed to hydrophobic surfaces from surface-saturating solution concentrations. Biomaterials 2010; 32:969-78. [PMID: 21035180 DOI: 10.1016/j.biomaterials.2010.09.075] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Accepted: 09/29/2010] [Indexed: 11/26/2022]
Abstract
The maximum capacity of a hydrophobic adsorbent is interpreted in terms of square or hexagonal (cubic and face-centered-cubic, FCC) interfacial packing models of adsorbed blood proteins in a way that accommodates experimental measurements by the solution-depletion method and quartz-crystal-microbalance (QCM) for the human proteins serum albumin (HSA, 66 kDa), immunoglobulin G (IgG, 160 kDa), fibrinogen (Fib, 341 kDa), and immunoglobulin M (IgM, 1000 kDa). A simple analysis shows that adsorbent capacity is capped by a fixed mass/volume (e.g. mg/mL) surface-region (interphase) concentration and not molar concentration. Nearly analytical agreement between the packing models and experiment suggests that, at surface saturation, above-mentioned proteins assemble within the interphase in a manner that approximates a well-ordered array. HSA saturates a hydrophobic adsorbent with the equivalent of a single square or hexagonally-packed layer of hydrated molecules whereas the larger proteins occupy two-or-more layers, depending on the specific protein under consideration and analytical method used to measure adsorbate mass (solution depletion or QCM). Square or hexagonal (cubic and FCC) packing models cannot be clearly distinguished by comparison to experimental data. QCM measurement of adsorbent capacity is shown to be significantly different than that measured by solution depletion for similar hydrophobic adsorbents. The underlying reason is traced to the fact that QCM measures contribution of both core protein, water of hydration, and interphase water whereas solution depletion measures only the contribution of core protein. It is further shown that thickness of the interphase directly measured by QCM systematically exceeds that inferred from solution-depletion measurements, presumably because the static model used to interpret solution depletion does not accurately capture the complexities of the viscoelastic interfacial environment probed by QCM.
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Affiliation(s)
- Ping Kao
- Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
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Affiliation(s)
- Hyeran Noh
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Scott T. Phillips
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802
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Affiliation(s)
- Hyeran Noh
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Scott T. Phillips
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802
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Noh H, Rhee Y. P1046 Epithelioid throphoblastic tumor of paracervix and parametrium. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62532-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
The difficulty of description of the radiative transfer in disordered photonic crystals arises from the necessity to consider on an equal footing the wave scattering by periodic modulations of the dielectric function and by its random inhomogeneities. We resolve this difficulty by approaching this problem from the standpoint of the general multiple scattering theory in media with an arbitrary regular profile of the dielectric function. We use the general asymptotic solution of the Bethe-Salpeter equation in order to show that for a sufficiently weak disorder the diffusion limit in disordered photonic crystals is presented by incoherent superpositions of the modes of the ideal structure with weights inversely proportional to the respective group velocities. The radiative transfer and the diffusion equations are derived as a relaxation of long scale deviations from this limiting distribution. In particular, it is shown that in general the diffusion is anisotropic unless the crystal has sufficiently rich symmetry, say, the square lattice in 2D or the cubic lattice in 3D. In this case, the diffusion is isotropic and only in this case can the effect of the disorder be characterized by a single mean free path depending on frequency.
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Affiliation(s)
- M V Erementchouk
- Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA
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Barnthip N, Noh H, Leibner E, Vogler EA. Volumetric interpretation of protein adsorption: kinetic consequences of a slowly-concentrating interphase. Biomaterials 2008; 29:3062-74. [PMID: 18442850 DOI: 10.1016/j.biomaterials.2008.03.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Accepted: 03/26/2008] [Indexed: 10/22/2022]
Abstract
Time-dependent energetics of blood-protein adsorption are interpreted in terms of a slowly-concentrating three-dimensional interphase volume initially formed by rapid diffusion of protein molecules into an interfacial region spontaneously formed by bringing a protein solution into contact with a physical surface. This modification of standard adsorption theory is motivated by the experimental observation that interfacial tensions of protein-containing solutions decrease slowly over the first hour to a steady-state value while, over this same period, the total adsorbed protein mass is constant (for lysozyme, 15 kDa; alpha-amylase, 51 KDa; albumin, 66 kDa; prothrombin, 72 kDa; IgG, 160 kDa; fibrinogen, 341 kDa studied in this work). These seemingly divergent observations are rationalized by the fact that interfacial energetics (tensions) are explicit functions of solute chemical potential (concentration), not adsorbed mass. Hence, rates of interfacial tension change parallel a slow interphase-concentration effect whereas solution depletion detects a constant interphase composition within the timeframe of experiment. A straightforward mathematical model approximating the perceived physical situation leads to an analytic formulation that is used to compute time-varying interphase volume and protein concentration from experimentally-measured interfacial tensions. Derivation from the fundamental thermodynamic adsorption equation verifies that protein adsorption from dilute solution is controlled by a partition coefficient at equilibrium, as is observed experimentally at steady state. Implications of the alternative interpretation of adsorption kinetics on biomaterials and biocompatibility are discussed.
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Affiliation(s)
- Naris Barnthip
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, United States
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Lim JY, Shaughnessy MC, Zhou Z, Noh H, Vogler EA, Donahue HJ. Surface energy effects on osteoblast spatial growth and mineralization. Biomaterials 2008; 29:1776-84. [PMID: 18222536 DOI: 10.1016/j.biomaterials.2007.12.026] [Citation(s) in RCA: 129] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2007] [Accepted: 12/20/2007] [Indexed: 01/03/2023]
Abstract
While short-term surface energy effects on cell adhesion are relatively well known, little is revealed as regards its later stage effects on cell behavior. We examined surface energy effects on osteoblastic cell growth and mineralization by using human fetal osteoblastic (hFOB) cells cultured on plasma-treated quartz (contact angle, theta=0 degrees) and octadecyltrichlorosilane (OTS)-treated quartz (theta=113 degrees). hFOB cells formed a homogeneous cell layer on plasma-treated quartz, while those cultured on OTS-treated quartz produced randomly distributed clump-like structures that were filled with cells (confirmed by confocal microscopy). Mineral deposition by hFOB cells was spatially homogeneous when cultured on hydrophilic surfaces. Furthermore, cells on hydrophilic surfaces exhibited increased mineralized area as well as enhanced mineral-to-matrix ratio (assessed by Fourier transform infrared spectroscopy), relative to cells on hydrophobic surfaces. Experiments using other types of osteoblast-like cells (MC3T3-E1, MG63, and SAOS-2) revealed more or less similar effects in spatial growth morphology. It was concluded that hydrophilic surfaces induce homogeneous spatial osteoblastic cell growth and mineral deposition and enhance the quantity (e.g., area) and quality (e.g., mineral-to-matrix ratio) of mineralization relative to hydrophobic surfaces. Our data suggest that surface energy effects on osteoblastic cell differentiation, especially mineralization, may be correlated with surface energy dependent changes in spatial cell growth.
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Affiliation(s)
- Jung Yul Lim
- Division of Musculoskeletal Sciences, Department of Orthopaedics and Rehabilitation, Center for Biomedical Devices and Functional Tissue Engineering, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
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Abstract
Histone deacetylase (HDAC) inhibitors are currently being tested as anticancer agents in clinical trials. Chromatin remodeling, such as through histone acetylation, is a fundamental phenomenon in eukaryotic cell biology, bearing implications to numerous physiological and pathological phenomena. Here, we discuss recent data from our own laboratory and those of others demonstrating antifibrotic and renoprotective effect of HDAC inhibitors in diabetic kidneys, and the possible mechanisms including the role of reactive oxygen species. HDAC inhibitors may prove to be a novel class of multitarget agents in the treatment of diabetic nephropathy.
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Affiliation(s)
- H B Lee
- Hyonam Kidney Laboratory, Soon Chun Hyang University, Seoul, Korea
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Abstract
Diabetic nephropathy is the leading cause of end-stage renal disease worldwide and an independent risk factor for all-cause and cardiovascular mortalities in diabetic patients. New insights into the molecular mechanisms that underlie the development and progression of microvascular complications of diabetes including nephropathy are emerging rapidly from experimental and clinical studies. Chronic hyperglycemia is a major initiator of diabetic microvascular complications. Activation of diacylglycerol (DAG)-protein kinase C (PKC) pathway, enhanced polyol pathway, increased oxidative stress, and overproduction of advanced glycation end products have all been proposed as potential cellular mechanisms by which hyperglycemia induces diabetic vascular complications. The DAG-PKC pathway contributes to vascular function in many ways such as the regulation of endothelial permeability, vasoconstriction, extracellular matrix synthesis/turnover, cell growth, angiogenesis, cytokine activation, and leukocyte adhesion. We will briefly review the current knowledge base regarding the pathogenic role for the activation of DAG-PKC pathway in diabetic nephropathy and other microvascular complications of diabetes. The results from animal studies and key clinical studies investigating specific effects of the PKC isoforms on the renal and other vascular tissues to induce diabetic complications are also reviewed.
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Affiliation(s)
- H Noh
- Research Division, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215, USA
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Noh H, Lee M, Yun Y, Park S, Bae D, Nam J, Park C, Cho C, Lee J, Chang Y. Cervical cancer patients’ preferences and use of various cancer information sources in South Korea. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.16073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
16073 Background: Accessing appropriate facts is important in enabling cancer patients cope with the disease. This study focused on the utilization and preferences of cancer information sources by cervical cancer patients in terms of ease in receiving and searching the available data. Methods: The study included 830 women over the age of 18 years treated for cervical cancer at six hospitals in South Korea between 1983 and 2004. All the participants provided written informed consent, and the Institutional Review Board of the National Cancer Center approved the protocol. A questionnaire addressed the patients’ use of and preferences for sources and forms of cancer information. Data were collected by mail. Results: Television and/or the radio were the the most frequently cited sources of cancer information by the middle and oldest age groups: 45–64 years (52.0%), =65 years (47.3%), while patients in the youngest age group (<45 years) used the Internet (38.8%). Booklets and/or pamphlets (24.0%) were the source of cancer information preferred by the youngest age group, while patients in the middle and oldest age groups preferred TV/radio: 45–64 years (35.7%) and =65 years (55.0%). Life notes and/or experiences (43.2%), that is, personal accounts, comprised the most easily understood form of information regardless of age group. Conclusions: Our findings indicate that cervical cancer patients’ utilization of and preferences for sources of cancer information vary according to patient age. Tailored educational materials that consider the users’ age and condition should be customized to best fit their specific preferences. No significant financial relationships to disclose.
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Affiliation(s)
- H. Noh
- National Cancer Center, Gyeonggi-do, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Kangnam Cha Hospital, Seoul, Republic of Korea; Keimyung University, Daegu, Republic of Korea; East-West Neo Medical Center, Seoul, Republic of Korea
| | - M. Lee
- National Cancer Center, Gyeonggi-do, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Kangnam Cha Hospital, Seoul, Republic of Korea; Keimyung University, Daegu, Republic of Korea; East-West Neo Medical Center, Seoul, Republic of Korea
| | - Y. Yun
- National Cancer Center, Gyeonggi-do, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Kangnam Cha Hospital, Seoul, Republic of Korea; Keimyung University, Daegu, Republic of Korea; East-West Neo Medical Center, Seoul, Republic of Korea
| | - S. Park
- National Cancer Center, Gyeonggi-do, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Kangnam Cha Hospital, Seoul, Republic of Korea; Keimyung University, Daegu, Republic of Korea; East-West Neo Medical Center, Seoul, Republic of Korea
| | - D. Bae
- National Cancer Center, Gyeonggi-do, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Kangnam Cha Hospital, Seoul, Republic of Korea; Keimyung University, Daegu, Republic of Korea; East-West Neo Medical Center, Seoul, Republic of Korea
| | - J. Nam
- National Cancer Center, Gyeonggi-do, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Kangnam Cha Hospital, Seoul, Republic of Korea; Keimyung University, Daegu, Republic of Korea; East-West Neo Medical Center, Seoul, Republic of Korea
| | - C. Park
- National Cancer Center, Gyeonggi-do, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Kangnam Cha Hospital, Seoul, Republic of Korea; Keimyung University, Daegu, Republic of Korea; East-West Neo Medical Center, Seoul, Republic of Korea
| | - C. Cho
- National Cancer Center, Gyeonggi-do, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Kangnam Cha Hospital, Seoul, Republic of Korea; Keimyung University, Daegu, Republic of Korea; East-West Neo Medical Center, Seoul, Republic of Korea
| | - J. Lee
- National Cancer Center, Gyeonggi-do, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Kangnam Cha Hospital, Seoul, Republic of Korea; Keimyung University, Daegu, Republic of Korea; East-West Neo Medical Center, Seoul, Republic of Korea
| | - Y. Chang
- National Cancer Center, Gyeonggi-do, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Kangnam Cha Hospital, Seoul, Republic of Korea; Keimyung University, Daegu, Republic of Korea; East-West Neo Medical Center, Seoul, Republic of Korea
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