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Evalen PS, Barnhardt EN, Ryu J, Stahlschmidt ZR. Toxicity of glyphosate to animals: A meta-analytical approach. Environ Pollut 2024; 347:123669. [PMID: 38460584 DOI: 10.1016/j.envpol.2024.123669] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/10/2024] [Accepted: 02/26/2024] [Indexed: 03/11/2024]
Abstract
Glyphosate (GLY)-based herbicides (GBHs) are the most commonly applied pesticide worldwide, and non-target organisms (e.g., animals) are now regularly exposed to GLY and GBHs due to the accumulation of these chemicals in many environments. Although GLY/GBH was previously considered to be non-toxic, growing evidence indicates that GLY/GBH negatively affects some animal taxa. However, there has been no systematic analysis quantifying its toxicity to animals. Therefore, we used a meta-analytical approach to determine whether there is a demonstrable effect of GLY/GBH toxicity across animals. We further addressed whether the effects of GLY/GBH vary due to (1) taxon (invertebrate vs. vertebrate), (2) habitat (aquatic vs. terrestrial), (3) type of biological response (behavior vs. physiology vs. survival), and (4) dosage or concentration of GLY/GBH. Using this approach, we also determined whether adjuvants (e.g., surfactants) in commercial formulations of GBHs increased toxicity for animals relative to exposure to GLY alone. We analyzed 1282 observations from 121 articles. We conclude that GLY is generally sub-lethally toxic for animals, particularly for animals in aquatic or marine habitats, and that toxicity did not exhibit dose-dependency. Yet, our analyses detected evidence for widespread publication bias so we encourage continued experimental investigations to better understand factors influencing GLY/GBH toxicity to animals.
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Affiliation(s)
- P S Evalen
- University of the Pacific, Stockton, CA, USA; University of Pennsylvania, Philadelphia, PA, USA
| | | | - J Ryu
- University of the Pacific, Stockton, CA, USA
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Jung U, Ryu J, Choi H. Optical Light Sources and Wavelengths within the Visible and Near-Infrared Range Using Photoacoustic Effects for Biomedical Applications. Biosensors (Basel) 2022; 12:bios12121154. [PMID: 36551121 PMCID: PMC9775951 DOI: 10.3390/bios12121154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 10/11/2022] [Revised: 11/29/2022] [Accepted: 12/02/2022] [Indexed: 06/01/2023]
Abstract
The photoacoustic (PA) effect occurs when sound waves are generated by light according to the thermodynamic and optical properties of the materials; they are absorption spectroscopic techniques that can be applied to characterize materials that absorb pulse or continuous wave (CW)-modulated electromagnetic radiation. In addition, the wavelengths and properties of the incident light significantly impact the signal-to-ratio and contrast with photoacoustic signals. In this paper, we reviewed how absorption spectroscopic research results have been used in applying actual photoacoustic effects, focusing on light sources of each wavelength. In addition, the characteristics and compositions of the light sources used for the applications were investigated and organized based on the absorption spectrum of the target materials. Therefore, we expect that this study will help researchers (who desire to study photoacoustic effects) to more efficiently approach the appropriate conditions or environments for selecting the target materials and light sources.
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Affiliation(s)
- Unsang Jung
- Production Technology Research Center, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi 39177, Gyeongsangbuk-do, Republic of Korea
| | - Jaemyung Ryu
- Department of Optical Engineering, Kumoh National Institute of Technology, 350-27 Gumi-daero, Gumi 39253, Gyeongsangbuk-do, Republic of Korea
| | - Hojong Choi
- Department of Electronic Engineering, Gachon University, Seongnam-daero, Sujeong-gu, Seongnam 13420, Gyeonggi-do, Republic of Korea
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Ayana G, Ryu J, Choe SW. Ultrasound-Responsive Nanocarriers for Breast Cancer Chemotherapy. Micromachines (Basel) 2022; 13:mi13091508. [PMID: 36144131 PMCID: PMC9503784 DOI: 10.3390/mi13091508] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/08/2022] [Accepted: 09/08/2022] [Indexed: 05/13/2023]
Abstract
Breast cancer is the most common type of cancer and it is treated with surgical intervention, radiotherapy, chemotherapy, or a combination of these regimens. Despite chemotherapy's ample use, it has limitations such as bioavailability, adverse side effects, high-dose requirements, low therapeutic indices, multiple drug resistance development, and non-specific targeting. Drug delivery vehicles or carriers, of which nanocarriers are prominent, have been introduced to overcome chemotherapy limitations. Nanocarriers have been preferentially used in breast cancer chemotherapy because of their role in protecting therapeutic agents from degradation, enabling efficient drug concentration in target cells or tissues, overcoming drug resistance, and their relatively small size. However, nanocarriers are affected by physiological barriers, bioavailability of transported drugs, and other factors. To resolve these issues, the use of external stimuli has been introduced, such as ultrasound, infrared light, thermal stimulation, microwaves, and X-rays. Recently, ultrasound-responsive nanocarriers have become popular because they are cost-effective, non-invasive, specific, tissue-penetrating, and deliver high drug concentrations to their target. In this paper, we review recent developments in ultrasound-guided nanocarriers for breast cancer chemotherapy, discuss the relevant challenges, and provide insights into future directions.
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Affiliation(s)
- Gelan Ayana
- Department of Medical IT Convergence Engineering, Kumoh National Institute of Technology, Gumi 39253, Korea
| | - Jaemyung Ryu
- Department of Optical Engineering, Kumoh National Institute of Technology, Gumi 39253, Korea
- Correspondence: (J.R.); (S.-w.C.); Tel.: +82-54-478-7781 (S.-w.C.); Fax: +82-54-462-1049 (S.-w.C.)
| | - Se-woon Choe
- Department of Medical IT Convergence Engineering, Kumoh National Institute of Technology, Gumi 39253, Korea
- Department of IT Convergence Engineering, Kumoh National Institute of Technology, Gumi 39253, Korea
- Correspondence: (J.R.); (S.-w.C.); Tel.: +82-54-478-7781 (S.-w.C.); Fax: +82-54-462-1049 (S.-w.C.)
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Kim S, Park G, Kim S, Song S, Song H, Ryu J, Park S, Pereira S, Paeng K, Ock CY. 1706P Artificial intelligence-powered tumor purity assessment from H&E whole slide images associates with variant allele frequency of somatic mutations across 23 cancer types in TCGA cohorts. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1784] [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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Kwon DH, Choe N, Shin S, Ryu J, Lee Y, Jeong A, Lee YG, Kim EM, Kim YK, Kook H. Regulation of MDM2 E3 ligase-dependent vascular calcification by Msx1/2. Atherosclerosis 2022. [DOI: 10.1016/j.atherosclerosis.2022.06.308] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ju J, Han K, Ryu J, Cho H. Nurses’ attitudes toward antimicrobial stewardship in South Korea. J Hosp Infect 2022; 129:162-170. [DOI: 10.1016/j.jhin.2022.07.016] [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] [Received: 05/05/2022] [Revised: 07/12/2022] [Accepted: 07/18/2022] [Indexed: 10/31/2022]
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Kim Y, Ryu J, Jang Y, Kim D, Bang Y, Choi S, Moon J, Kim H, Shin J. 138 Single-cell RNA-seq of dorsal root ganglion reveals neuroinflammatory process in atopic dermatitis. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.144] [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: 11/29/2022]
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Lee J, Ryu J, Cho S. T219 Different interpretations of huge bicuspid peak in capillary electrophoresis: lesson from three case series. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.707] [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: 11/03/2022]
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Ryu S, Ryu J, Choi H. Fisheye lens design for solar-powered mobile ultrasound devices. Technol Health Care 2022; 30:243-250. [PMID: 35124601 PMCID: PMC9028671 DOI: 10.3233/thc-228023] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND: Compared to benchtop ultrasound machines, mobile ultrasound machines require portable batteries when acquiring information regarding human tissues during outdoor activities. OBJECTIVE: A novel fisheye lens type was designed to address the charging issue where it is difficult to constantly track the sun. This method does not require the use of a mechanical motor that constantly tracks the sun to charge the portable batteries. METHODS: To obtain an optical solar power system, the numerical aperture (NA) and field angle must be increased. Therefore, we use the fisheye lens with the largest field angle. RESULTS: The NA of the designed fisheye lens system reaches 0.75, allowing light collection of approximately ± 48∘. Additionally, the efficiency ratio of the central and surrounding areas also satisfies more than 80% at a field angle of 85∘ and more than 70% at field angles of 85∘ to 90∘, respectively. CONCLUSIONS: We designed a novel fisheye lens for solar-powered mobile ultrasound machines used outdoors.
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Affiliation(s)
- Seonho Ryu
- Department of Optical System Engineering, Kumoh National Institute of Technology, Gumi, Korea
| | - Jaemyung Ryu
- Department of Optical System Engineering, Kumoh National Institute of Technology, Gumi, Korea
| | - Hojong Choi
- Department of Medical IT Convergence Engineering, Kumoh National Institute of Technology, Gumi, Korea
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Ryu J, Chan W, Carvalho F, Mishler E, Hennebold J, Hanna C. 109 Utilising cell-free DNA for detection of gene editing outcomes in rhesus macaque embryos. Reprod Fertil Dev 2021; 34:291-292. [PMID: 35231245 DOI: 10.1071/rdv34n2ab109] [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: 11/23/2022] Open
Affiliation(s)
- J Ryu
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA
| | - W Chan
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA
| | - F Carvalho
- Assisted Reproductive Technologies Core, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA
| | - E Mishler
- Assisted Reproductive Technologies Core, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA
| | - J Hennebold
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA
| | - C Hanna
- Assisted Reproductive Technologies Core, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA
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Jo H, Kim B, Ryu J. POS-440 Minimal invasive implant using autologous 3D printed-omentum patch for chronic kidney disease. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.464] [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: 11/25/2022] Open
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Lee J, Hwang E, Lee JY, Ryu J, Seo S, Kwon MH, Chung HM, Vesper S, Seo S. Establishment and Application of an Environmental Relative Moldiness Index for Dwellings in Korea. Indian J Pharm Sci 2020. [DOI: 10.36468/pharmaceutical-sciences.spl.16] [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: 11/22/2022] Open
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Lee K, Kim H, Ryu J, Kim Y, Park S, Kim D, Kim Y, Choi S, Lee G, Jeong Y, Yun J, Chong Y. P1.14-45 Surgical Outcome of Non-Small Cell Lung Cancer with Clinical Single Zone N2 in Aortopulmonary Zone (LN#5 and LN#6). J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1196] [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: 10/25/2022]
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Ryu J, Lee C. Genome-Wide Association Study Reveals Two Nucleotide Variants Associated with Educational Attainment in Koreans. RUSS J GENET+ 2019. [DOI: 10.1134/s1022795419090138] [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: 11/23/2022]
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Nguyen T, Ryu J. INTERSTITIAL LUNG DISEASE IN AN ELDERLY MAN WITH GIANT CELL ARTERITIS. Chest 2019. [DOI: 10.1016/j.chest.2019.02.266] [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: 11/16/2022] Open
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Nguyen T, Sekiguchi H, Yi E, Ryu J. PULMONARY INVOLVEMENT IN INTRAVASCULAR LARGE B-CELL LYMPHOMA. Chest 2019. [DOI: 10.1016/j.chest.2019.02.265] [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: 11/28/2022] Open
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Yoo TK, Chae BJ, Ahn JY, Ryu J, Eom YH, Park WC, Song BJ. Abstract P3-03-28: Withdrawn. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p3-03-28] [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
This abstract was withdrawn by the authors.
Citation Format: Yoo T-K, Chae BJ, Ahn JY, Ryu J, Eom YH, Park WC, Song BJ. Withdrawn [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P3-03-28.
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Affiliation(s)
- T-K Yoo
- Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, Republic of Korea; Incheon St. Mary's Hospital, Catholic University of Korea, Incheon, Republic of Korea; Bucheon St. Mary's Hospital, Catholic University of Korea, Bucheon, Republic of Korea
| | - BJ Chae
- Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, Republic of Korea; Incheon St. Mary's Hospital, Catholic University of Korea, Incheon, Republic of Korea; Bucheon St. Mary's Hospital, Catholic University of Korea, Bucheon, Republic of Korea
| | - JY Ahn
- Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, Republic of Korea; Incheon St. Mary's Hospital, Catholic University of Korea, Incheon, Republic of Korea; Bucheon St. Mary's Hospital, Catholic University of Korea, Bucheon, Republic of Korea
| | - J Ryu
- Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, Republic of Korea; Incheon St. Mary's Hospital, Catholic University of Korea, Incheon, Republic of Korea; Bucheon St. Mary's Hospital, Catholic University of Korea, Bucheon, Republic of Korea
| | - YH Eom
- Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, Republic of Korea; Incheon St. Mary's Hospital, Catholic University of Korea, Incheon, Republic of Korea; Bucheon St. Mary's Hospital, Catholic University of Korea, Bucheon, Republic of Korea
| | - WC Park
- Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, Republic of Korea; Incheon St. Mary's Hospital, Catholic University of Korea, Incheon, Republic of Korea; Bucheon St. Mary's Hospital, Catholic University of Korea, Bucheon, Republic of Korea
| | - BJ Song
- Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, Republic of Korea; Incheon St. Mary's Hospital, Catholic University of Korea, Incheon, Republic of Korea; Bucheon St. Mary's Hospital, Catholic University of Korea, Bucheon, Republic of Korea
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Uh K, Ryu J, Miko H, Carey K, Lee K. 44 Misregulation of ten-eleven translocation 3 CXXC domain leads to abnormal formation of 5-hydroxymethylcytosine and expression of pluripotency genes in pig embryos. Reprod Fertil Dev 2019. [DOI: 10.1071/rdv31n1ab44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Ten-eleven translocation (TET) methylcytosine dioxygenases are considered to play an important role in regulation of DNA methylation patterns by converting 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC). TET3 protein, a member of TET family, is enriched in mature oocytes and early stage embryos and contributes to DNA demethylation of the paternal genome in zygotes. N-terminal CXXC domain of TET3 is thought to be important in catalysing 5mC oxidation through its DNA binding potential. However, it is not clear whether specific DNA binding of CXXC domain is required for 5hmC conversion in mammalian embryos. Here, we investigated the role of TET3 CXXC domain in controlling 5hmC formation in fertilized pig embryos by injecting TET3 CXXC domain into mature pig oocytes as a dominant negative to inhibit the direct binding of TET3 to the genome through the CXXC domain. The CXXC domain of pig TET3 was identified through bioinformatics comparison of TET3 sequences among different species and cloned from mature pig oocyte-derived cDNA. To construct the green fluorescent protein (GFP)-CXXC fusion protein, CXXC sequence was subcloned into N-terminal GFP fusion vector, and then mRNA was synthesised by in vitro transcription. The GFP-CXXC mRNA (100 ng/µL) was injected into oocytes matured in vitro for 36 to 37h. Then, the oocytes were fertilized at 42h post-maturation. Water-injected oocytes served as a control. At 17h post-fertilization, zygotes were collected to analyse 5hmC level by immunocytochemistry. The level of 5hmC was analysed using ImageJ (https://imagej.nih.gov/ij/). Expression of pluripotency-related genes at Day 7 blastocysts was examined through quantitative RT-PCR; ΔΔCt method was used to analyse the quantitative RT-PCR data and Student’s t-test was used for statistical analysis. All experiments were conducted at least three times and P-values of less than 0.05 were considered significant. The GFP-CXXC was exclusively localised in pronuclei, indicating that the CXXC domain may lead to nuclear localization of TET3. The level of 5hmC in zygotes was not altered by the overexpression of GFP-CXXC. Interestingly, in 2-cell stage embryos, the 5hmC level was reduced in GFP-CXXC injected embryos compared with the control group, suggesting that CXXC domain is important for 5hmC formation post-DNA replication. There was an increase in transcript abundance of NANOG and ESRRB in blastocysts developed from GFP-CXXC injected oocytes compared with control blastocysts (P<0.05). There was no difference in the expression of POU5F1 and SOX2. In this study, we found that CXXC domain of TET3 is critical in maintaining the level of 5hmC formation at 2-cell stage and proper level of pluripotency-related genes (NANOG and ESRRB) in blastocysts. Future studies will focus on elucidating mechanisms behind the changes after overexpression of GFP-CXXC in pig embryos.
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Carey K, Uh K, Ryu J, Lee K. 209 Overexpression of WAVE1 activates pluripotency-related genes in porcine somatic cells. Reprod Fertil Dev 2019. [DOI: 10.1071/rdv31n1ab209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Despite extensive efforts, cellular reprogramming in livestock species has had limited success. Induced pluripotent stem cells (iPSC) have been established; however, these cells often show incomplete reprogramming status, and constitutive expression of exogenous reprogramming factors is required due to inactivation of endogenous pluripotency-related genes. A previous study reported that overexpression of the Xenopus egg-derived WAVE1 gene assists reprogramming of murine somatic cells into the pluripotent state. The WAVE1 gene is also required for oocyte-mediated reprogramming by transcriptional activation of embryonic genes. In this study, we investigated the role of porcine WAVE1 in cellular reprogramming by inducing overexpression of WAVE1 in porcine fetal fibroblasts (PFF). Previously, we cloned the coding sequences (CDS) of porcine WAVE1 using porcine expressed sequence tags (EST) and predicted porcine WAVE1 sequences. The WAVE1 CDS, derived from porcine mature oocytes, was overexpressed in PFF by transfection using the Neon system. Then, G418-based antibiotic selection was performed to enrich cells constitutively overexpressing WAVE1. After cell culture for 4 weeks, RNA was extracted from the WAVE1 transfected and control PFF, and cDNA was synthesised from the RNA using random hexamers. The cDNAs were used for quantitative reverse transcription PCR to analyse the expression pattern of pluripotency- and reprogramming-related genes: POU5F1, NANOG, KLF2, SOX2, DPPA3, ZFP42, ESRRB, TET1, TET2, and TET3. The expression of target genes were normalized to GAPDH level and the ΔΔCt algorithm was used for analysis. Three technical replications and 4 biological replications were performed. Student’s t-test was used for the comparison and P-values<0.05 were considered significant. On average, a 20-fold increase of WAVE1 was observed in the transfected cells compared with control cells. Interestingly, overexpression of WAVE1 activated some of the pluripotency-related genes in porcine PFF. Specifically, transcript levels of NANOG, KLF2, and SOX2 were increased compared with those in the control cells (P<0.05). In addition, levels of POU5F1 and DPPA3 tended to be higher in WAVE1-overexpressing cells compared with those in the control cells (P<0.1). However, transcript levels of other pluripotency-related genes (ZFP42, DPPA3, and ESRRB) did not change in WAVE1-overexpressing cells. The expression level of TET family (TET1, TET2, and TET3), which is enriched in pluripotent stem cells and a key regulator of DNA methylation, was not changed in WAVE1-overexpressing cells. These results indicate that WAVE1 can be a novel factor in porcine cellular reprogramming. Considering that a key defect of current porcine iPSC generation is insufficient expression of endogenous pluripotency genes, application of WAVE1 may enhance quality of porcine iPSC. We intend to evaluate expression of pluripotency markers at the protein level in WAVE1-overexpressing cells and investigate mechanisms underpinning WAVE1-mediated reprogramming process in future studies.
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Jensen J, Ryu J, Clifton H, Brown J. IMPACT OF PRE-ARRIVAL EPINEPHRINE IN EMERGENCY DEPARTMENT OR URGENT CARE PEDIATRIC ANAPHYLAXIS PATIENTS WEIGHING <15KG. Ann Allergy Asthma Immunol 2018. [DOI: 10.1016/j.anai.2018.09.074] [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: 11/29/2022]
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Kang G, Tu TNT, Kim S, Yang H, Jang M, Jo D, Ryu J, Baek J, Jung H. Adenosine-loaded dissolving microneedle patches to improve skin wrinkles, dermal density, elasticity and hydration. Int J Cosmet Sci 2018; 40:199-206. [PMID: 29574973 DOI: 10.1111/ics.12453] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [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: 10/24/2017] [Accepted: 03/08/2018] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Although dissolving microneedle patches have been widely studied in the cosmetics field, no comparisons have been drawn with the topical applications available for routine use. In this study, two wrinkle-improving products, adenosine-loaded dissolving microneedle patches and an adenosine cream, were evaluated for efficacy, with respect to skin wrinkling, dermal density, elasticity, and hydration, and safety in a clinical test on the crow's feet area. METHODS Clinical efficacy and safety tests were performed for 10 weeks on 22 female subjects with wrinkles around their eyes. The adenosine-loaded dissolving microneedle patch was applied once every 3 days, in the evening, for 8 weeks to the designated crow's feet area. The adenosine cream was applied two times per day, in the morning and evening, for 8 weeks to the other crow's feet area. Skin wrinkling, dermal density, elasticity, and hydration were measured by using PRIMOS® premium, Dermascan® C, Cutometer® MPA580, and Corneometer® CM 825, respectively. In addition, subjective skin irritation was evaluated by self-observation, and objective skin irritation was assessed through expert interviews. RESULTS The adenosine-loaded dissolving microneedle patches had a similar or better efficacy than the adenosine cream. Both groups showed statistically significant efficacy for almost all parameters (P < 0.05). The dissolving microneedle patches had a long-lasting effect on the average wrinkle depth (P < 0.05), only showed efficacy in dermal density (P < 0.05), had an early improving effect on elasticity (P < 0.05), and demonstrated better hydration efficacy (P < 0.001). No adverse effects were observed in either group during the test period. CONCLUSIONS In the clinical efficacy test of four skin-improvement parameters, adenosine-loaded dissolving microneedle patches showed the same or better effect than the adenosine cream, although the weekly adenosine dose was 140 times lower. The dissolving microneedle patches caused no adverse reactions. These adenosine-loaded dissolving microneedle patches are expected to be safe, effective, and novel cosmetics for skin improvement.
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Affiliation(s)
- G Kang
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - T N T Tu
- Life Science and Biotechnology, Underwood International College, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - S Kim
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - H Yang
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - M Jang
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - D Jo
- Dermapro Skin Research Center, 30 Bangbaejoongang-ro, Seocho-gu, Seoul, 06684, Korea
| | - J Ryu
- Dermapro Skin Research Center, 30 Bangbaejoongang-ro, Seocho-gu, Seoul, 06684, Korea
| | - J Baek
- Dermapro Skin Research Center, 30 Bangbaejoongang-ro, Seocho-gu, Seoul, 06684, Korea
| | - H Jung
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
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Nishimiya K, Yin B, Piao Z, Osman H, Ryu J, Leung HM, Sharma G, Gardecki JA, Tearney GJ. P2271Super high-resolution OCT for endothelial cell visualization in the coronary arteries. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2271] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K Nishimiya
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - B Yin
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - Z Piao
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - H Osman
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - J Ryu
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - H M Leung
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - G Sharma
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - J A Gardecki
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - G J Tearney
- Massachusetts General Hospital, Wellman Center for Photomedicine, Department of Pathology, Boston, United States of America
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Zhou X, Yu A, Zhou F, Ryu J, Ing T, Vaziri N. Effects of an Acidic, Lactate-Based Peritoneal Dialysis Solution and its Euhydric, Bicarbonate-Based Counterpart on Neutrophilic Intracellular pH. Int J Artif Organs 2018. [DOI: 10.1177/039139889301601205] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
An exposure of human neutrophils to an acidic (pH 5.2), lactate-based incubation mixture containing a conventional, acidic, lactate-based peritoneal dialysis solution (PDS) resulted in the development of a prompt and substantial intracellular acidosis. A comparable exposure to a euhydric, bicarbonate-based incubation mixture containing a euhydric, bicarbonate-based PDS did not bring about similar changes in intracellular pH. The absence of an intracellular acidosis in the instance of the euhydric, bicarbonate-based PDS may be the reason why this solution is more biocompatible than its acidic, lactate-based counterpart.
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Affiliation(s)
- X.J. Zhou
- Department of Medicine, University of California at Irvine, Irvine, California
| | - A.W. Yu
- Departments of Medicine, Veterans Affairs Hospital, Hines, Illinois
| | - F.Q. Zhou
- Departments of Medicine, Veterans Affairs Hospital, Hines, Illinois
| | - J. Ryu
- Stritch School of Medicine, Loyola University of Chicago, Maywood, Illinois - USA
| | - T.S. Ing
- Departments of Medicine, Veterans Affairs Hospital, Hines, Illinois
| | - N.D. Vaziri
- Department of Medicine, University of California at Irvine, Irvine, California
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Uh K, Ryu J, Lee K. 57 Disruption of TET1 Leads to Abnormal Expression of Pluripotency-Related Genes in Porcine Embryos. Reprod Fertil Dev 2018. [DOI: 10.1071/rdv30n1ab57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
DNA methylation is one of the principal epigenetic modifications playing an essential role in regulating gene expression. The TET family (1-3) is implicated in initiating the demethylation process by converting 5-methylcytosine (5mC) to 5-hydroxymethyl cytosine (5hmC) during embryogenesis. Previous studies in mice suggest that TET1 is required for pluripotency and maintenance of embryonic stem cells by managing their epigenetic marks, specifically DNA methylation. This raises the possibility that TET1 is capable of establishing distinct epigenetic marks during embryo development, thus regulating pluripotency-related genes. However, this has not been demonstrated in any species. Previously we have demonstrated that the level of TET1 (mRNA and protein) was high in porcine blastocysts. In this study, we generated TET1 knockout embryos and analysed expression patterns of pluripotency-related genes in blastocysts to study the role of TET1 in maintaining pluripotency during porcine embryo development. The CRISPR/Cas9 system was applied to disrupt the TET1 gene during embryogenesis. Three single-guide RNAs (sgRNAs) were designed based on our previous cloning of the TET1 gene. In vitro-synthesised Cas9 mRNA (20 ng µL−1) and sgRNAs (10 ng µL−1 each) were injected into the cytoplasm of zygotes after IVF. A total of 605 zygotes were used for microinjection and subsequently 54 blastocysts were formed. As a control, 89 IVF blastocysts were developed from 240 embryos. Nine to ten blastocysts per group were collected on Day 7 to analyse gene expression patterns of TET family and pluripotency-related genes using quantitative RT-PCR. Three biological and 3 experimental replications were used. Differences in the gene expression were evaluated by ANOVA. As expected, there was a 2-fold decrease in the transcript level of TET1 in TET1-knockout blastocysts compared with that in control IVF blastocysts (P < 0.05). Interestingly, an increase in TET3 mRNA (P < 0.01) and numeric increase of TET2 mRNA was observed in TET1-knockout blastocysts. We could also detect an elevated level of pluripotency-related genes in TET1-knockout blastocysts; the expression of NANOG, ESRRB, ZFP42, and TCL1A was up-regulated. However, there was no significant change in the expression level of other pluripotency-related genes (POU5F1, SOX2, KLF2, PRDM14, and DPPA3) in TET1 knockout blastocysts. In this study, we found that TET1 is involved in regulating expression of pluripotency-related genes: NANOG, ESRRB, ZFP42, and TCL1A. The loss of functional TET1 resulted in elevated expression of these genes. The reason for this is still under investigation, although TET3, known to have a positive correlation with the level of NANOG, could be involved. A 3-fold increase in TET3 mRNA response to the TET1-knockout may suggest a compensatory mechanism between TET1 and TET3 during porcine embryogenesis. To further understand these actions, we intend to analyse DNA methylation (5mc and 5hmc) levels on the promoter region of the genes. In addition, embryos lacking functional TET1 and TET3 will be generated to explore a potential compensatory effect of TET3 under the absence of TET1.
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Nam H, Kim C, Kim D, Lim J, Jeon S, Kim J, Lee Y, Cho J, Ryu J. P2.01-016 Prognostic Impact of a New Score Using Neutrophil-To-Lymphocyte Ratios in the Serum and Malignant Pleural Effusion in Lung Cancer Patients. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1118] [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: 11/27/2022]
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Choi H, Ryu J, Yoon C. Development of novel adjustable focus head mount display for concurrent image-guided treatment applications. Comput Assist Surg (Abingdon) 2017; 22:163-169. [PMID: 29037079 DOI: 10.1080/24699322.2017.1389394] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
PURPOSE A conventional see-through head mount display contains many optical lenses, which can be problematic in image-guided treatment applications due to its size, weight, structure, and focus limitation. Therefore, we have designed a new type of see-through head mount display with a reduced number of optical lenses and an adequate optical resolution that can be utilized for image-guided treatment applications. MATERIALS AND METHODS A new type of adjustable focus head mount display with expanded virtual images and an external treatment space that can be provided to the eyes of a user by enlarging the images of a small display is designed and investigated in this study. This type of head mount display can be used in image-guided treatment applications because of the dual paths of imaging and treatment from the optical systems. Therefore, this system with an adjustable focus function can aid doctors in obtaining images for the treatment of the eyes of patients because every patient has a unique pupil size. RESULTS The results of the adjustable focus see-through head mount display showed distortion values of +0.36% in the +1 diopter location and -0.55% in the -4 diopter location, and there are less significant modulation transfer function differences within the ±5 diopter locations. CONCLUSIONS Low optical distortions within ±0.5 diopters can help doctors image the eye conditions of patients through fewer image processing techniques. Therefore, the designed adjustable focus head mount display can provide low optical aberrations and high optical modulation transfer function resolutions for image-guided treatment applications.
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Affiliation(s)
- Hojong Choi
- a Department of Medical IT Convergence Engineering , Kumoh National Institute of Technology , Gumi , Korea
| | - Jaemyung Ryu
- b Department of Optical System Engineering , Kumoh National Institute of Technology , Gumi , Korea
| | - Changhan Yoon
- c Department of Biomedical Engineering , Inje University , Gimhae , Korea
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Choe SW, Park K, Park C, Ryu J, Choi H. Combinational light emitting diode-high frequency focused ultrasound treatment for HeLa cell. Comput Assist Surg (Abingdon) 2017; 22:79-85. [PMID: 28956464 DOI: 10.1080/24699322.2017.1379158] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
PURPOSE Light sources such as laser and light emitting diode or ultrasound devices have been widely used for cancer therapy and regenerative medicines, since they are more cost-effective and less harmful than radiation therapy, chemotherapy or magnetic treatment. Compared to laser and low intensity ultrasound techniques, light emitting diode and high frequency focused ultrasound shows enhanced therapeutic effects, especially for small tumors. MATERIALS AND METHODS We propose combinational light emitting diode-high frequency focused ultrasound treatment for human cervical cancer HeLa cells. Individual red, green, and blue light emitting diode light only, high frequency focused ultrasound only, or light emitting diode light combined with high frequency focused ultrasound treatments were applied in order to characterize the responses of HeLa cells. RESULTS Cell density exposed by blue light emitting diode light combined with high frequency focused ultrasound (2.19 ± 0.58%) was much lower than that of cells exposed by red and green light emitting diode lights (81.71 ± 9.92% and 61.81 ± 4.09%), blue light emitting diode light (11.19 ± 2.51%) or high frequency focused ultrasound only (9.72 ± 1.04%). CONCLUSIONS We believe that the proposed combinational blue light emitting diode-high frequency focused ultrasound treatment could have therapeutic benefits to alleviate cancer cell proliferation.
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Affiliation(s)
- Se-Woon Choe
- a Department of Medical IT Convergence Engineering , Kumoh National Institute of Technology , Gumi , Korea
| | - Kitae Park
- a Department of Medical IT Convergence Engineering , Kumoh National Institute of Technology , Gumi , Korea
| | - Chulwoo Park
- a Department of Medical IT Convergence Engineering , Kumoh National Institute of Technology , Gumi , Korea
| | - Jaemyung Ryu
- b Department of Optical System Engineering , Kumoh National Institute of Technology , Gumi , Korea
| | - Hojong Choi
- a Department of Medical IT Convergence Engineering , Kumoh National Institute of Technology , Gumi , Korea
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Affiliation(s)
- J. Ryu
- Texas A&M University, College Station, Texas,
| | - H. Yang
- Texas A&M University, College Station, Texas,
| | - A.C. Kim
- University of Florida, Gainesville, Florida
| | - K. Kim
- University of Miami, Miami, Florida,
| | - J. Heo
- Texas A&M University, College Station, Texas,
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Lim S, Park H, Park J, Jang J, Kim K, Ryu J. THE RELATIONSHIP BETWEEN SCHISANDRAE CHINENSIS SUPPLEMENTATION AND MUSCLE STRENGTH IN OLDER WOMEN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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)
- S. Lim
- Research Foundation for Industry-Academy Cooperation, Dong-A University, Busan, Korea (the Republic of)
| | - H. Park
- Department of Health Care and Science, Dong-A University, Busan, Korea (the Republic of),
- Department of Preventive Gerontology, National Center for Geriatrics and Gerontology, Nagoya, Japan,
| | - J. Park
- Institute of Taekwondo for Health and Culture, Dong-A University, Busan, Korea (the Republic of),
| | - J. Jang
- Institute of Convergence Bio-Health, Dong-A University, Busan, Korea (the Republic of),
| | - K. Kim
- Institute of Taekwondo for Health and Culture, Dong-A University, Busan, Korea (the Republic of),
| | - J. Ryu
- Institute of Taekwondo for Health and Culture, Dong-A University, Busan, Korea (the Republic of),
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Kim D, Lee G, Huh Y, Lee S, Park K, Kim S, Kim J, Koh J, Ryu J. NAMPT Is an Essential Regulator of RA-Mediated Periodontal Inflammation. J Dent Res 2017; 96:703-711. [DOI: 10.1177/0022034517690389] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Recent studies have indicated a potential correlation between rheumatoid arthritis (RA) and periodontal inflammation. We undertook this study to verify whether RA mediates periodontitis-like phenotypes in experimental mouse models of RA and to explore the role of nicotinamide phosphoribosyltransferase (NAMPT) in periodontal inflammation during RA pathogenesis. Periodontal inflammation and alveolar bone loss have been reported in mice with collagen-induced arthritis (CIA) and in genetically modified tumor necrosis factor–α (TNF-α) transgenic (TG) mouse models. Among the adipokines examined in our study, NAMPT expression was markedly upregulated in the periodontal ligament (PDL) tissues in RA mouse models and in human PDL cells stimulated by the proinflammatory cytokines, interleukin (IL) 1β and TNF-α. When NAMPT was overexpressed with the Nampt-synthesizing adenovirus vector (Ad- Nampt), the PDL cells exhibited an increased expression of cytokines (IL6), chemokines (IL8 and chemokine [C-C motif] ligand 5 [CCL5]), inflammatory mediators (cyclooxygenase 2 [COX-2]), and matrix-degrading enzymes (matrix metalloproteinase [MMP] 1 and MMP3). Inhibition of NAMPT by the intracellular NAMPT (iNAMPT) inhibitor, FK866, or by the sirtuin inhibitor, nicotinamide, in PDL cells led to inhibition of the IL1β or Ad- Nampt–induced upregulation of catabolic factors, whereas treatment with recombinant NAMPT protein or blockade of extracellular NAMPT (eNAMPT) with blocking antibody did not. Moreover, NAMPT inhibition by the intraperitoneal or intragingival injection of FK866 in CIA mice inhibited periodontal tissue damage, under conditions of RA. Thus, our results verified the co-occurrence of RA and periodontal inflammation using experimental mouse models of RA, suggesting that iNAMPT in PDL cells plays a pivotal role in the pathogenesis of RA-mediated periodontal inflammation by regulating the expression levels of catabolic genes, such as IL6, IL8, CCL5, COX-2, MMP1, and MMP3.
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Affiliation(s)
- D. Kim
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - G. Lee
- Bioimaging and Cell Logistics Research Center, School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Y.H. Huh
- Bioimaging and Cell Logistics Research Center, School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - S.Y. Lee
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - K.H. Park
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - S. Kim
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - J. Kim
- Department of Pediatric Dentistry, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - J. Koh
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - J. Ryu
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
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Uh K, Ryu J, Ray C, Lee K. 91 DISRUPTION OF TET1 DURING PORCINE EMBRYOGENESIS USING CRISPR/Cas9 SYSTEM. Reprod Fertil Dev 2017. [DOI: 10.1071/rdv29n1ab91] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Ten-eleven translocation (TET) enzymes catalyse oxidation of 5-methylcytosine to 5-hydroxymethyl cytosine. This TET-mediated conversion of 5-methylcytosine to 5-hydroxymethyl cytosine is implicated in initiating the DNA demethylation process, observed post-fertilization. Three members (TET1–3) of the TET family are differentially expressed during embryo development and appear to have different roles. Previous studies in mice suggest that TET1 is a key regulator in maintaining pluripotency in embryonic stem cells by managing epigenetic marks such as DNA methylation. This would imply that TET1 should be a regulator of epigenetic marks during embryo development, although this has not been demonstrated. Previously, we have cloned porcine TET1 from blastocysts (GenBank accession number KC137683) and demonstrated that the level of TET1 (mRNA and protein) was high in blastocysts. The protein level was greater in the inner cell mass compared with the trophectoderm. In this study, we generated TET1 knockout porcine embryos using CRISPR/Cas9 system to study the role of TET1 in controlling epigenetic marks during porcine embryo development. First, 2 sgRNA, immediately downstream of the presumable translation initiation site, were designed and synthesised; location of the sgRNA were nucleotide position at 2 to 21 bp and 23 to 42 bp, respectively (KC137683). Then, sgRNA (10 ng μL−1 each) and Cas9 mRNA (20 ng μL−1) were injected into the cytoplasm of IVF zygotes, and Day 7 blastocysts were genotyped. All embryos carried mutations on both alleles of TET1 (10/10), one homozygous and 9 biallelic mutations. However, immunocytochemistry analysis of other CRISPR/Cas9 injected embryos revealed that TET1 was not removed (10/10), indicating that the sgRNA may have not introduced a premature stop codon 3′ to the presumable translation initiation site. Therefore, 2 new sgRNA were designed to generate a premature stop codon at the 5′ side of a key functional domain, the 2-oxoglutarate-Fe(II)-dependent oxygenase domain (4690 to 5160 bp); the locations of the 2 sgRNA were 4450 to 4469 bp and 4501 to 4520 bp, respectively. Similarly, all of the embryos carried mutations in TET1 (7/7), 2 homozygous and 5 biallelic mutations. In addition, TET1 proteins were not detected in 11 of 16 blastocysts, confirmed by immunocytochemistry. In this study, we successfully generated embryos lacking TET1 by introducing designed CRISPR/Cas9 system during embryogenesis. Presence of TET1 from the first injection experiment suggests that the presumable translation initiation site is not accurate. Discrepancy between genotyping and immunocytochemistry results from the second injection experiment indicates that embryos possessing TET1 protein probably have mutations in triplets, thus no premature stop codon was synthesised. Further studies will focus on identifying the role of TET1 in maintaining pluripotency and epigenetic modification during pre-implantation stage using these embryos.
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Chamari K, Cherif A, Ryu J, Fenneni M, Farooq A, Meeusen R, Roelands B. Three-days of Islamic intermittent fasting negatively impact repeated-sprints performance of active young healthy adults. J Sci Med Sport 2017. [DOI: 10.1016/j.jsams.2017.01.196] [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: 10/20/2022]
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Raucher D, Ryu J, Dragojevic S. Elastin-like polypeptide for Improved delivery of small molecule drugs and therapeutic peptides for anticancer therapy. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32787-3] [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: 11/28/2022]
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Lee KJ, Kwon SJ, Hwang JE, Han SM, Jung I, Kim JB, Choi HI, Ryu J, Kang SY. Genome-wide expression analysis of a rice mutant line under salt stress. Genet Mol Res 2016; 15:gmr-15-gmr15048833. [PMID: 27813582 DOI: 10.4238/gmr15048833] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Salinity is a major environmental stress to plants. In this study, the ability of plants to tolerate salt was investigated by studying growth, physiological characteristics, and expression levels of genes related to the salt-stress response in the salt-tolerant rice mutant (Till-II-877), which was derived from γ-ray irradiation. Compared to plants grown under normal conditions, the height and root length of wild type (WT) were reduced by approximately 40 and 29% following exposure to salt stress for 3 weeks, whereas Till-II-877 line showed 29 and 23% reductions in plant height and root length, respectively. No significant changes were observed in total chlorophyll content, and the malondialdehyde content of the mutant increased less than that of the WT under salt treatment. Gene expression was compared between the WT and mutant lines using microarray analysis. An unbiased analysis of the gene expression datasets allowed us to identify the pathways involved in salt-stress responses. Among the most significantly affected pathways, changes in gene expression were observed in α-linolenic acid and linoleic acid metabolism (in lipid metabolism), fructose and mannose metabolism and glycolysis-gluconeogenesis (in carbohydrate metabolism), cysteine and methionine metabolism (in amino acid metabolism), and carbon fixation (in the energy metabolism of photosynthetic organisms) under salt stress. These results show that the differential response of plants subjected to salt stress was due to changes in multiple metabolic pathways. These findings increase our understanding of the effects of salt stress in rice and may aid in the development of salt-tolerant rice cultivars.
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Affiliation(s)
- K J Lee
- National Agrobiodiversity Center, National Academy of Agricultural Science, Rural Development Administration, Jeonju, Jeonbuk, Korea
| | - S-J Kwon
- Radiation Breeding Research Center, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Korea.,Radiation Biotechnology and Applied Radioisotope Science, University of Science and Technology, Daejeon, Korea
| | - J E Hwang
- Radiation Breeding Research Center, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Korea
| | - S M Han
- Radiation Breeding Research Center, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Korea
| | - I Jung
- Radiation Breeding Research Center, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Korea
| | - J-B Kim
- Radiation Breeding Research Center, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Korea
| | - H-I Choi
- Radiation Breeding Research Center, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Korea
| | - J Ryu
- Radiation Breeding Research Center, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Korea
| | - S-Y Kang
- Radiation Breeding Research Center, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Korea
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Park D, Lee G, Kim H, Ryu J. The development of new equations to estimate ventilator setting in patients with neuromuscular disease. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.431] [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: 11/30/2022]
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Abstract
UNLABELLED Zolpidem is a representative of non-benzodiazepine hypnotics. Recent epidemiologic studies have reported increased fracture risk in patients taking zolpidem, but the results have been inconsistent. The present meta-analysis shows that the use of zolpidem is associated with an increased risk of fractures. PURPOSE Previous studies have reported inconsistent findings regarding the association between the use of zolpidem and the risk of fractures. We performed a systematic literature review and meta-analysis to assess the association. METHODS We identified relevant studies by searching MEDLINE, EMBASE, Cochrane Library, and PsycINFO without language restrictions (until August 2014). Methodological quality was assessed based on the Newcastle-Ottawa Scale (NOS). RESULTS A total of 1,092,925 participants (129,148 fracture cases) were included from 9 studies (4 cohort, 4 case-control, and 1 case-crossover study). Overall, the use of zolpidem was associated with an increased risk of fracture (relative risk [RR] 1.92, 95 % CI 1.65-2.24; I (2) = 50.9 %). High-quality subgroups (cohort studies, high NOS score, adjusted for any confounder, or adjusted for osteoporosis) had higher RRs than the corresponding low-quality subgroups (high quality, 1.94-2.76; low quality, 1.55-1.79). Of note, the risk for hip fracture was higher than that for fracture at any site (hip fracture, RR 2.80, 95 % CI 2.19-3.58; fracture at any site, RR 1.84, 95 % CI 1.67-2.03; P < 0.001). CONCLUSIONS The use of zolpidem may increase the risk of fractures. Clinicians should be cautious when prescribing zolpidem for patients at high risk of fracture.
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Affiliation(s)
- S M Park
- Department of Family Medicine, Seoul National University Hospital, 103, Daehak-ro, Jongno-gu, 03080, Seoul, Republic of Korea
- Department of Education and Research, Seoul National University Hospital, 103, Daehak-ro, Jongno-gu, 03080, Seoul, Republic of Korea
| | - J Ryu
- Department of Family Medicine, Seoul National University Hospital, 103, Daehak-ro, Jongno-gu, 03080, Seoul, Republic of Korea
| | - D R Lee
- Department of Family Medicine, Wonkwang University Sanbon Hospital, Wonkwang University School of Medicine, 321, Sanbon-ro, Gunpo-si, 15865, Gyeonggi-do, Republic of Korea.
| | - D Shin
- Department of Biomedical Sciences, Seoul National University College of Medicine, 101, Daihak-ro, Jongno-gu, 03080, Seoul, Republic of Korea
| | - J M Yun
- Department of Family Medicine, Seoul National University Hospital, 103, Daehak-ro, Jongno-gu, 03080, Seoul, Republic of Korea
| | - J Lee
- Department of Family Medicine, Wonkwang University Sanbon Hospital, Wonkwang University School of Medicine, 321, Sanbon-ro, Gunpo-si, 15865, Gyeonggi-do, Republic of Korea
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Kang JT, Ryu J, Cho B, Lee EJ, Yun YJ, Ahn S, Lee J, Ji DY, Lee K, Park KW. Generation of RUNX3 knockout pigs using CRISPR/Cas9-mediated gene targeting. Reprod Domest Anim 2016; 51:970-978. [PMID: 27696566 DOI: 10.1111/rda.12775] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 08/02/2016] [Indexed: 12/26/2022]
Abstract
Pigs are an attractive animal model to study the progression of cancer because of their anatomical and physiological similarities to human. However, the use of pig models for cancer research has been limited by availability of genetically engineered pigs which can recapitulate human cancer progression. Utilizing genome editing technologies such as CRISPR/Cas9 system allows us to generate genetically engineered pigs at a higher efficiency. In this study, specific CRISPR/Cas9 systems were used to target RUNX3, a known tumour suppressor gene, to generate a pig model that can induce gastric cancer in human. First, RUNX3 knockout cell lines carrying genetic modification (monoallelic or biallelic) of RUNX3 were generated by introducing engineered CRISPR/Cas9 system specific to RUNX3 into foetal fibroblast cells. Then, the genetically modified foetal fibroblast cells were used as donor cells for somatic cell nuclear transfer, followed by embryo transfer. We successfully obtained four live RUNX3 knockout piglets from two surrogates. The piglets showed the lack of RUNX3 protein in their internal organ system. Our results demonstrate that the CRISPR/Cas9 system is effective in inducing mutations on a specific locus of genome and the RUNX3 knockout pigs can be useful resources for human cancer research and to develop novel cancer therapies.
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Affiliation(s)
- J-T Kang
- MGENPLUS Biotechnology Research Institute, Seoul, Korea
| | - J Ryu
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, USA
| | - B Cho
- MGENPLUS Biotechnology Research Institute, Seoul, Korea
| | - E-J Lee
- MGENPLUS Biotechnology Research Institute, Seoul, Korea
| | - Y-J Yun
- MGENPLUS Biotechnology Research Institute, Seoul, Korea
| | - S Ahn
- MGENPLUS Biotechnology Research Institute, Seoul, Korea
| | - J Lee
- MGENPLUS Biotechnology Research Institute, Seoul, Korea
| | - D-Y Ji
- MGENPLUS Biotechnology Research Institute, Seoul, Korea
| | - K Lee
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, USA
| | - K-W Park
- MGENPLUS Biotechnology Research Institute, Seoul, Korea.,Department of Animal Science & Technology, Sunchon National University, Suncheon, Korea
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Im SB, Kwon SJ, Ryu J, Jeong SW, Kim JB, Ahn JW, Kim SH, Jo YD, Choi HI, Kang SY. Development of a transposon-based marker system for mutation breeding in sorghum (Sorghum bicolor L.). Genet Mol Res 2016; 15:gmr8713. [PMID: 27706735 DOI: 10.4238/gmr.15038713] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Under certain circumstances, transposable elements (TE) can create or reverse mutations and alter the genome size of a cell. Sorghum (Sorghum bicolor L.) is promising for plant transposon tagging due to its small genome size and its low content of repetitive DNA. We developed a marker system based on targeted region amplification polymorphisms (TE-TRAP) that uses the terminal inverted repeats (TIRs) of transposons. A total of 3816 class 2 transposons belonging to the PIF/Harbinger family were identified from the whole sorghum genome that produced five primers, including eight types of TIRs. To define the applicability and utilization of TE-TRAP, we used 21 individuals that had been bred after ɤ-ray irradiation. In total, 31 TE-TRAP, 16 TD, and 21 AFLP primer combinations generated 1133, 223, and 555 amplicons, respectively. The percent polymorphic marker was 62.8, 51.1, and 59.3% for the TE-TRAP, TD, and AFLP markers, respectively. Phylogenetic and principal component analyses revealed that TE-TRAP divided the 21 individuals into three groups. Analysis of molecular variance suggested that TE-TRAP had a higher level of genetic diversity than the other two marker systems. After verifying the efficiency of TE-TRAP, 189 sorghum individuals were used to investigate the associations between the markers and the ɤ-ray doses. Two significant associations were found among the polymorphic markers. This TE-based method provides a useful marker resource for mutation breeding research.
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Affiliation(s)
- S B Im
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - S-J Kwon
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea .,Radiation Biotechnology and Applied Radioisotope Science, University of Science and Technology, Daejeon, Korea
| | - J Ryu
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - S W Jeong
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - J B Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - J-W Ahn
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea.,Radiation Biotechnology and Applied Radioisotope Science, University of Science and Technology, Daejeon, Korea
| | - S H Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - Y D Jo
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - H-I Choi
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - S-Y Kang
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
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41
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Ryu J, Im SB, Kwon SJ, Ahn JW, Jeong SW, Kang SY. Chemical and genetic diversity of high-seed-yield sorghum (Sorghum bicolor M.) germplasms. Genet Mol Res 2016; 15:gmr8677. [PMID: 27706704 DOI: 10.4238/gmr.15038677] [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: 11/03/2022]
Abstract
This study evaluated the chemical and genetic diversity of high-seed-yield sorghum germplasms from Korea, the United States, and South Africa. We identified significant differences in the chemical contents of whole plants at the heading stage in all cultivars, including differences in crude protein, fat, fiber, ash, neutral detergent fiber, acid detergent fiber, mineral, and fatty acid contents. Our results suggest that Banwoldang is the most appropriate cultivar for roughage because of its high protein yield. We identified significant differences in the tannin, flavonoid, amylose, mineral, crude fat, fatty acid, and 3-deoxyanthocyanin contents in the whole grain from all cultivars, but not in the mineral or crude fat contents. Tannin levels were generally low. IS645 contained the highest levels of flavonoids and linolenic acid compounds, and Moktak had the highest amylose and deoxyanthocyanidin content in the grain. To assess genetic diversity, we used 10 simple sequence repeat (SSR) primer sets to identify 38 alleles with 3-8 alleles per locus. Based on phylogenetic analysis of the SSR markers, the sorghum cultivars were divided into three major groups. Comparison of clusters based on chemical compositions with those based on SSRs showed that the groups formed by the three native Korean cultivars clustered similarly in molecular dendrograms. Association analysis was conducted for the 10 SSR marker; 48 chemical and growth traits were present for two marker traits (seed color and whole plant fatty acid content) with significant marker-trait associations. These markers could be used to select sorghum cultivars for breeding programs.
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Affiliation(s)
- J Ryu
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongup, Korea
| | - S B Im
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongup, Korea
| | - S J Kwon
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongup, Korea.,Unversity of Science and Technology, Radiation Biotechnology and Applied Radioisotope Science, Daejeon, Korea
| | - J W Ahn
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongup, Korea.,Unversity of Science and Technology, Radiation Biotechnology and Applied Radioisotope Science, Daejeon, Korea
| | - S W Jeong
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongup, Korea
| | - S Y Kang
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongup, Korea
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Takigawa N, Ryu J, Kish VL, Kinoshita M, Abe M. Functional Anatomy of the Lateral Collateral Ligament Complex of the Elbow: Morphology and Strain. ACTA ACUST UNITED AC 2016; 30:143-7. [PMID: 15757766 DOI: 10.1016/j.jhsb.2004.09.016] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2004] [Accepted: 09/24/2004] [Indexed: 11/19/2022]
Abstract
The anatomy of the lateral ulnar collateral ligament (LUCL) of the elbow was investigated in 26 fresh frozen cadavers. Two types of insertion of the LUCL were originally described but we found another type which is characterized by a broad single expansion along with a thin membranous fibre. Strain on the LUCL was measured in situ during extension and flexion with the forearm in supination, pronation and neutral. Strain in the proximal fibres started to occur at around 32° flexion and peaked at between 50° and 60° flexion. Strains measured in the distal fibres were smaller in magnitude. Forearm rotation had little effect on strain during extension to flexion. Based on these results, we conclude that the LUCL functions in unison with the annular ligament.
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Affiliation(s)
- N Takigawa
- Department of Orthopedic Surgery, Osaka Medical College, Osaka, Japan.
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Omokawa S, Tanaka Y, Ryu J, Kish VL. The Anatomical Basis for Reverse First to Fifth Dorsal Metacarpal Arterial Flaps. ACTA ACUST UNITED AC 2016; 30:40-4. [PMID: 15620490 DOI: 10.1016/j.jhsb.2004.09.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2004] [Accepted: 09/07/2004] [Indexed: 10/26/2022]
Abstract
This study discusses the anatomical basis for reverse first to fifth dorsal metacarpal arterial flaps. The arterial pattern and size of the first to fifth dorsal metacarpal arteries were examined in 20 fresh cadaver hands. Their connections to the palmar arterial system at the metacarpal head were observed, and the location, number and diameter of skin perforators from each dorsal metacarpal artery were measured. The first to fourth dorsal metacarpal arteries were found in all specimens; the fifth dorsal metacarpal artery was found in 19 of our 20 specimens. The mean diameters of the first to fifth arteries at their bifurcation site were 0.6, 0.8, 0.5, 0.4 and 0.2 mm, respectively. Each artery gave off four to eight skin perforators (diameter: 0.1–0.3 mm) between the metacarpal head and base. The first to third dorsal metacarpal arteries consistently connected to the palmar arterial system, and connections between the fourth and fifth dorsal metacarpal arteries and the palmar system were found in 65% and 40% of specimens.
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Affiliation(s)
- S Omokawa
- Orthopedic Research Laboratory, West Virginia University, Morgantown, WV, USA.
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Ryu J, Hong BH, Kim YJ, Yang EJ, Choi M, Kim H, Ahn S, Baik TK, Woo RS, Kim HS. Neuregulin-1 attenuates cognitive function impairments in a transgenic mouse model of Alzheimer's disease. Cell Death Dis 2016; 7:e2117. [PMID: 26913607 PMCID: PMC4849157 DOI: 10.1038/cddis.2016.30] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [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: 06/24/2015] [Revised: 01/22/2016] [Accepted: 01/25/2016] [Indexed: 12/20/2022]
Abstract
The neuregulin (NRG) family of epidermal growth factor-related proteins is composed of a wide variety of soluble and membrane-bound proteins that exert their effects via the tyrosine kinase receptors ErbB2-ErbB4. In the nervous system, the functions of NRG1 are essential for peripheral myelination, the establishment and maintenance of neuromuscular and sensorimotor systems and the plasticity of cortical neuronal circuits. In the present study, we report that an intracerebroventricular infusion of NRG1 attenuated cognitive impairments in 13-month-old Tg2576 mice, an animal model of Alzheimer's disease (AD). In addition, according to Golgi-Cox staining, NRG1 rescued the reduction in the number of dendritic spines detected in the brains of Tg2576 mice compared with vehicle (PBS)-infused mice. This result was also corroborated in vitro as NRG1 attenuated the oligomeric amyloid beta peptide1-42 (Aβ1-42)-induced decrease in dendritic spine density in rat primary hippocampal neuron cultures. NRG1 also alleviated the decrease in neural differentiation induced by oligomeric Aβ1-42 in mouse fetal neural stem cells. Collectively, these results suggest that NRG1 has a therapeutic potential for AD by alleviating the reductions in dendritic spine density and neurogenesis found in AD brains.
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Affiliation(s)
- J Ryu
- Department of Pharmacology and Biomedical Sciences, College of Medicine, Seoul National University, 103 Daehakro, Jongno-gu, Seoul, Republic of Korea
| | - B-H Hong
- Department of Pharmacology and Biomedical Sciences, College of Medicine, Seoul National University, 103 Daehakro, Jongno-gu, Seoul, Republic of Korea
| | - Y-J Kim
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon, Republic of Korea
| | - E-J Yang
- Department of Pharmacology and Biomedical Sciences, College of Medicine, Seoul National University, 103 Daehakro, Jongno-gu, Seoul, Republic of Korea
| | - M Choi
- Department of Pharmacology and Biomedical Sciences, College of Medicine, Seoul National University, 103 Daehakro, Jongno-gu, Seoul, Republic of Korea
| | - H Kim
- Department of Pharmacology and Biomedical Sciences, College of Medicine, Seoul National University, 103 Daehakro, Jongno-gu, Seoul, Republic of Korea
| | - S Ahn
- Department of Pharmacology and Biomedical Sciences, College of Medicine, Seoul National University, 103 Daehakro, Jongno-gu, Seoul, Republic of Korea
| | - T-K Baik
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon, Republic of Korea
| | - R-S Woo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon, Republic of Korea
| | - H-S Kim
- Department of Pharmacology and Biomedical Sciences, College of Medicine, Seoul National University, 103 Daehakro, Jongno-gu, Seoul, Republic of Korea.,Seoul National University College of Medicine, Bundang Hospital, Bundang-Gu, Sungnam, Republic of Korea.,Neuroscience Research Institute, College of Medicine, Seoul National University, 103 Daehakro, Jongno-gu, Seoul, Republic of Korea
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Ryu J, Chung K, Lee S, Kim YT. P-166 Decrement of Serum CA 19-9 Concentration after Initial Chemotherapy Predicts Favorable Outcome in Patients with Advanced Pancreatic Cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv233.166] [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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Lee S, Lee B, Ryu J, Kim YT. P-119 Prognostic value of CA 19-9 kinetics during gemcitabine-based chemotherapy in patients with advanced cholangiocarcinoma. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv233.119] [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: 11/12/2022] Open
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Lee S, Jang D, Ryu J, Kim YT. P-171 Risk Factors of Progression or Malignancy in Main Duct and Mixed-type Intraductal Papillary Mucinous Neoplasm of the Pancreas. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv233.171] [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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Kim J, Kim S, Ryu J, Park H, Park S, Kim S. P323 Nomogram predicting axillary PCR after neoadjuvant chemotherapy in node-positive breast cancer. Breast 2015. [DOI: 10.1016/s0960-9776(15)70353-x] [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: 10/23/2022] Open
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Kim H, Park S, Koo J, Ryu J, Kim S, Kim J, Park H, Kim S. P045 Risk of discordant Ki-67 level between biopsy and surgical specimens in breast cancers. Breast 2015. [DOI: 10.1016/s0960-9776(15)70095-0] [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: 11/17/2022] Open
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Kim Y, Oh I, Kim K, Jang T, Choi Y, Kim Y, Lee K, Shin K, Jung C, Yang S, Jang S, Ryu J, Yoo S, Yong S, Lee K, In K, Lee M. A Randomized Phase III Study of Docetaxel Plus Cisplatin Versus Pemetrexed Plus Cisplatin in First Line Non-Squamous Non-Small Cell Lung Cancer (Nsq-Nsclc). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu438.49] [Citation(s) in RCA: 2] [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: 11/13/2022] Open
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