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Babiarz J, Ryu H, Williams C, Ham Y, Rivera Sarti J, Levander XA. Slicing through silos: Development and evaluation of a hospital-based telehealth hepatitis C virus treatment program. Int J Drug Policy 2024; 127:104396. [PMID: 38593518 DOI: 10.1016/j.drugpo.2024.104396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 03/12/2024] [Accepted: 03/14/2024] [Indexed: 04/11/2024]
Abstract
BACKGROUND There exist many barriers to hepatitis C virus (HCV) treatment for those with substance use disorder (SUD) or who lack access to routine medical care. A hospital-based telehealth program was developed to provide treatment opportunities for hospitalized patients living with HCV. METHODS This single site prospective cohort study conducted from July 2022 to March 2023 aimed to measure linkage to care with an HCV clinician and initiation of HCV treatment in hospitalized patients. Patients were assessed in-person by a social worker then seen via telehealth by a clinician who prescribed either glecaprevir/pibrentasvir or sofosbuvir/velpatasvir. Treatment was initiated with pharmacist assistance. The team conducted in-person and/or telephonic outreach during and after hospitalization. Cure was confirmed by sustained virologic response at 12 weeks (SVR12) post-treatment. RESULTS A total of 25 patients were enrolled and completed telehealth visits. All patients had a history of SUD and 18 (72 %) were unstably housed. Nineteen patients (76 %) initiated treatment, and 14 (56 %) successfully completed treatment. Twelve patients (48 %) completed post-treatment labs, including two who prematurely discontinued treatment. Eleven patients (44 %) achieved confirmed cure with SVR12. CONCLUSION A hospital-based, multidisciplinary telehealth program can be an innovative care model to successfully treat HCV in a difficult-to-treat patient populations.
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Affiliation(s)
- J Babiarz
- Department of Medicine, Division of Internal Medicine and Geriatrics, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239 United States
| | - H Ryu
- Department of Pharmacy, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239 United States
| | - C Williams
- Department of Care Management, Division of General Internal Medicine and Geriatrics, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239 United States
| | - Y Ham
- Department of Pharmacy, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239 United States
| | - J Rivera Sarti
- Department of Medicine, Division of Infectious Disease, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239 United States
| | - X A Levander
- Department of Medicine, Division of General Internal Medicine and Geriatrics, Section of Addiction Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239 United States
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Shim G, Yang D, Cho W, Kim J, Ryu H, Choi W, Kim J. Elastic Resistance and Shoulder Movement Patterns: An Analysis of Reaching Tasks Based on Proprioception. Bioengineering (Basel) 2023; 11:1. [PMID: 38275569 PMCID: PMC10813056 DOI: 10.3390/bioengineering11010001] [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: 11/01/2023] [Revised: 12/09/2023] [Accepted: 12/15/2023] [Indexed: 01/27/2024] Open
Abstract
This study departs from the conventional research on horizontal plane reach movements by examining human motor control strategies in vertical plane elastic load reach movements conducted without visual feedback. Here, participants performed shoulder presses with elastic resistances at low, moderate, and high intensities without access to visual information about their hand position, relying exclusively on proprioceptive feedback and synchronizing their movements with a metronome set at a 3 s interval. The results revealed consistent performance symmetry across different intensities in terms of the reach speed (p = 0.254-0.736), return speed (p = 0.205-0.882), and movement distance (p = 0.480-0.919). This discovery underscores the human capacity to uphold bilateral symmetry in movement execution when relying solely on proprioception. Furthermore, this study observed an asymmetric velocity profile where the reach duration remained consistent irrespective of the load (1.15 s), whereas the return duration increased with higher loads (1.39 s-1.45 s). These findings suggest that, in the absence of visual feedback, the asymmetric velocity profile does not result from the execution of the action but rather represents a deliberate deceleration post-reach aimed at achieving the target position as generated by the brain's internal model. These findings hold significant implications for interpreting rehabilitation approaches under settings devoid of visual feedback.
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Affiliation(s)
- Gyuseok Shim
- Department of Human Ecology & Technology, BrainKorea21 FOUR, Handong Global University, Pohang 37554, Republic of Korea; (G.S.); (D.Y.)
| | - Duwon Yang
- Department of Human Ecology & Technology, BrainKorea21 FOUR, Handong Global University, Pohang 37554, Republic of Korea; (G.S.); (D.Y.)
| | - Woorim Cho
- Department of Information and Communications Engineering, Tokyo Institute of Technology, Yokohama 226-8503, Japan;
| | - Jihyeon Kim
- Department of Digital Healthcare, Human Integrated Solution, Goyang 10464, Republic of Korea;
| | - Hyangshin Ryu
- Department of Digital Healthcare, Human Integrated Solution, Goyang 10464, Republic of Korea;
| | - Woong Choi
- College of ICT Construction & Welfare Convergence, Kangnam University, Yongin 16979, Republic of Korea
| | - Jaehyo Kim
- Department of Human Ecology & Technology, BrainKorea21 FOUR, Handong Global University, Pohang 37554, Republic of Korea; (G.S.); (D.Y.)
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Park K, Nam J, Lee H, Kim T, Ryu H, Ki Y, Kim JJ, Oh S, Oh S, Hong Y. 1745P Phase II study of neoadjuvant chemotherapy with 4 cycles of dose dense MVAC followed by radical surgery in Korean patients with MIBC and locally advanced urothelial carcinoma of bladder (NCT04047693). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1823] [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: 12/01/2022] Open
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Yoo C, Kim KP, Kim I, Kang M, Cheon J, Kang B, Ryu H, Jeong J, Lee J, Kim K, Ryoo BY, Abou-Alfa G. 55P Final results from the NIFTY trial, a phase IIb, randomized, open-label study of liposomal Irinotecan (nal-IRI) plus fluorouracil (5-FU)/leucovorin (LV) in patients (pts) with previously treated metastatic biliary tract cancer (BTC). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Ryu H, Song C, Kim J, Jeon J, Cho S, Kim K, Jheon S, Kim S, Kim Y, Lee J. PO-1241 Role of Prognostic Nutritional Index in Postoperative Radiotherapy for Non-Small Cell Lung Cancer. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03205-4] [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: 10/18/2022]
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Kim J, Yoo C, Seo S, Jeong J, Ryoo BY, Kim KP, Lee J, Lee KW, Kim JW, Kim IH, Kang M, Ryu H, Cheon J, Park S. 1690P A multicenter randomized phase II open label study to compare the safety and efficacy of direct oral anticoagulants versus subcutaneous dalteparin for cancer-associated venous thromboembolism in patients with advanced upper gastrointestinal, hepatobiliary and pancreatic cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1662] [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] Open
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Kim J, Choo M, Ryu H, Byun S, Lee S. Interpretation of uroflowmetrogram: Application with artificial intelligence. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33952-5] [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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Hidayati N, Poon A, Willowson K, Eslick E, Ryu H, Bailey D. Evaluation of Kidney Dose in Neuroendocrine Tumors Patients after Peptide Receptor Radionuclide Therapy using 177Lu-DOTATATE. Atom Indo 2019. [DOI: 10.17146/aij.2019.910] [Citation(s) in RCA: 2] [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: 11/09/2022] Open
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Kim M, Hwang JY, Choo KS, Ryu H, Reid SNS, Kim YW, Kim TU, Kim JH. Comparison of image quality of abdominopelvic CT in paediatric patients: low osmolar contrast media versus less iodine-containing iso-osmolar contrast media at different peak kilovoltages. Clin Radiol 2019; 74:896.e9-896.e16. [PMID: 31431254 DOI: 10.1016/j.crad.2019.06.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 06/21/2019] [Indexed: 10/26/2022]
Abstract
AIM To evaluate the effect of iso-osmolar contrast media (IOCM) at different tube voltages on image quality for abdominal computed tomography (CT) in paediatric patients. MATERIALS AND METHODS The low osmolar contrast media (LOCM) group and IOCM group consisted of 101 and 102 CT examinations, respectively, in patients <18 years old. Images were reviewed retrospectively. Objective measurement of the contrast enhancement and noise were analysed and contrast-to-noise ratios (CNRs) of the abdominal aorta, portal vein, and liver were calculated. Four radiologists participated in subjective analysis using a four-point scale system to evaluate degrees of contrast enhancement, image noise, beam-hardening artefact, and overall image quality. Reader performance for correctly differentiating the two kinds of contrast media was evaluated. RESULTS Regarding the objective measurement, contrast enhancement was significantly higher in the LOCM group (p<0.05). In subjective analysis, only CT using 120 kVp showed significantly stronger enhancement in the LOCM group (p=0.002), and sensitivity to differentiate the IOCM was 80.6%. Overall sensitivity and specificity for correctly differentiating IOCM were 57.1%, and 56.9%, respectively. CONCLUSION The application of IOCM was found to be feasible for performing paediatric abdominopelvic CT with a low tube voltage protocol. Although objective measurements of contrast enhancement were significantly lower in the IOCM group, subjective contrast enhancement and image quality assessments were not statistically different between groups.
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Affiliation(s)
- M Kim
- Department of Radiology, Pusan National University Yangsan Hospital, Geumo-ro 20, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea
| | - J Y Hwang
- Department of Radiology, Pusan National University Yangsan Hospital, Geumo-ro 20, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Geumo-ro 20, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea.
| | - K S Choo
- Department of Radiology, Pusan National University Yangsan Hospital, Geumo-ro 20, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea
| | - H Ryu
- Department of Radiology, Pusan National University Yangsan Hospital, Geumo-ro 20, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea
| | - S N S Reid
- College of Creative Human Resource, School of Liberal Arts Education, Kyungsung University, Busan, 48434, Republic of Korea
| | - Y W Kim
- Department of Radiology, Pusan National University Yangsan Hospital, Geumo-ro 20, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea
| | - T U Kim
- Department of Radiology, Pusan National University Yangsan Hospital, Geumo-ro 20, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea
| | - J H Kim
- Department of Radiology, Pusan National University Yangsan Hospital, Geumo-ro 20, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea
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You JM, Kim TU, Kim S, Lee NK, Lee JW, Ryu H, Kim JH, Hong SB, Jeon TY, Park DY. Preoperative N stage evaluation in advanced gastric cancer patients using multidetector CT: can the sum of the diameters of metastatic LNs be used for N stage evaluation? Clin Radiol 2019; 74:782-789. [PMID: 31378300 DOI: 10.1016/j.crad.2019.06.030] [Citation(s) in RCA: 5] [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: 09/28/2018] [Accepted: 06/28/2019] [Indexed: 12/23/2022]
Abstract
AIM To compare the diagnostic performance of total counts of metastatic lymph nodes (LN-sum) and conventional multidetector (MD) computed tomography (CT) staging in the nodal evaluation of advanced gastric cancer (AGC) patients. MATERIALS AND METHODS In total, 127 consecutive patients who underwent preoperative MDCT and gastrectomy for AGC were identified. Metastatic LNs on MDCT were defined as LNs with a short axis ≥8 mm, marked or heterogeneous enhancement, and morphological features (central necrosis, round shape, clustering). The sensitivity, specificity, accuracy, positive predictive value (PPV), and negative predictive value (NPV) of the N-stage using LN-sum and conventional MDCT staging were generated and compared. In addition, metastatic LN counts between the MDCT and the histopathological examinations and correlation between LN-sum and histopathological nodal status were analysed. RESULTS The total counts of metastatic LNs on MDCT was significantly smaller than those detected in histopathological assessments (p<0.0001). LN-sum showed significant correlation with the pathological N stage and the number of metastatic LNs (rho=0.69, 0.73, p<0.0001). The areas under the receiver operating characteristic curve were 0.896, and 0.835, for N stage ≥N2 and N3, with cut-off values of 12.5 and 23.5 mm, respectively. LN-sum provided better diagnostic performance than conventional MDCT staging for discriminating N0-2 versus N3; sensitivity, accuracy, PPV and NPV of LN-sum were significantly higher (80.4 versus 52.2%, 81.1 versus 68.5%, 71.2 versus 57.1%, and 88 versus 74.1%). CONCLUSION LN-sum may be sufficiently useful in assessing the N3 stage of AGC and may help to plan appropriate therapy for AGC patients.
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Affiliation(s)
- J M You
- Department of Radiology, Medical Research Institute, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea
| | - T U Kim
- Department of Radiology, Medical Research Institute, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea.
| | - S Kim
- Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine, Medical Research Institute, Busan, Republic of Korea
| | - N K Lee
- Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine, Medical Research Institute, Busan, Republic of Korea
| | - J W Lee
- Department of Radiology, Medical Research Institute, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea
| | - H Ryu
- Department of Radiology, Medical Research Institute, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea
| | - J H Kim
- Department of Radiology, Medical Research Institute, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea
| | - S B Hong
- Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine, Medical Research Institute, Busan, Republic of Korea
| | - T Y Jeon
- Department of Surgery, Pusan National University Hospital, Pusan National University School of Medicine, Medical Research Institute, Busan, Republic of Korea
| | - D Y Park
- Department of Pathology, Pusan National University Hospital, Pusan National University School of Medicine, Medical Research Institute, Busan, Republic of Korea
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Park H, Ryu H, Kim H, Oh K, Oh Y, Lee K, Kim S, Kim Y, Ahn C. SUN-199 URINARY ANGIOTENSINOGEN TO CREATININE RATIO (UAGT/CR) IS NOT A PREDICTIVE BIOMARKER FOR RENAL PROGRESSION IN AUTOSOMAL DOMINANT POLYCYSTIC KIDNEY DISEASE: KNOW-CKD STUDY. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.602] [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] Open
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Lee MW, Kim N, Kim S, Joo M, Ryu H, Lee H. Chemokine receptor CXCR7 expression, function and clinical implications in head and neck squamous cell carcinoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy304.037] [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: 11/13/2022] Open
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Lee H, Lee KM, Han D, Ryu H. N-Myc and STAT interactor (NMI) as a key determinant of chemosensitivity in breast cancer: Proteomic-based computing network mapping and in vivo verification with a mouse model. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy304.013] [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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Ryu H, Han D, Lee KM, Kim K. Proteomic-based machine learning computational analysis discovered biomarkers of aberrant vesicle-exosomal trafficking to determine chemotherapeutic responses in breast cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy303.029] [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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Ryu H, Galiguis J, Pham A, Le A. Blastocyst development and euploidy rate in single medium with continuous or renewal on day 3 using sibling embryos. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.1008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lim B, Hwang M, Song JS, Ryu AJ, Joung B, Shim EB, Ryu H, Pak HN. 1008Effectiveness of atrial fibrillation rotor ablation is dependent on conduction velocity: an in-silico 3-dimensional modeling study. Europace 2018. [DOI: 10.1093/europace/euy015.557] [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)
- B Lim
- Yonsei University , Seoul, Korea Republic of
| | - M Hwang
- Yonsei University , Seoul, Korea Republic of
| | - J S Song
- Yonsei University , Seoul, Korea Republic of
| | - A J Ryu
- Kangwon National University Hospital, Chuncheon, Korea Republic of
| | - B Joung
- Yonsei University , Seoul, Korea Republic of
| | - E B Shim
- Kangwon National University Hospital, Chuncheon, Korea Republic of
| | - H Ryu
- NVIDIA, Seoul, Korea Republic of
| | - H N Pak
- Yonsei University , Seoul, Korea Republic of
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Lee H, Ryu H, Han D. High-throughput proteome identifies ANHAK as a novel biomarker for bladder urothelial carcinoma diagnosis in liquid-based cytology. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx653.004] [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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Ryu H, Han D. Next generation proteomic profiling to predict the response to neoadjuvant chemotherapy in breast cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx653.005] [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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Lee S, Kim JY, Cheon S, Kim S, Kim D, Ryu H. Stimuli-responsive magneto-/electro-chromatic color-tunable hydrophobic surface modified Fe3O4@SiO2 core–shell nanoparticles for reflective display approaches. RSC Adv 2017. [DOI: 10.1039/c6ra27540k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Magneto-/electro-chromatic reflective color tunability is confirmed using hydrophobic surface modified magnetite nanoparticles. The optical reflective color spectra and color gamut demonstrate the promising applications in reflective displays.
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Affiliation(s)
- S. Lee
- Reality Display Device Research Section
- Electronics and Telecommunications Research Institute (ETRI)
- 34129 Daejeon
- Korea
- College of Electronics and Information Engineering
| | - J. Y. Kim
- Reality Display Device Research Section
- Electronics and Telecommunications Research Institute (ETRI)
- 34129 Daejeon
- Korea
| | - S. Cheon
- Reality Display Device Research Section
- Electronics and Telecommunications Research Institute (ETRI)
- 34129 Daejeon
- Korea
| | - S. Kim
- Reality Display Device Research Section
- Electronics and Telecommunications Research Institute (ETRI)
- 34129 Daejeon
- Korea
| | - D. Kim
- College of Electronics and Information Engineering
- Sejong University
- Gwangjin-gu
- Korea
| | - H. Ryu
- Reality Display Device Research Section
- Electronics and Telecommunications Research Institute (ETRI)
- 34129 Daejeon
- Korea
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Ryu H, Song I, Choi Y, Baek S, Moon J, Lee H, Yun H, Kim S, Jo D. 337O The changes in the treatment of elderly AML patients in Korea: A single center experience. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw586.006] [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] Open
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Ryu H, Han D, Kim J, Lee H. 555P Systems-wide bioinformatics analysis using next generation transcriptome and proteomics reveals nicotinamide transforms molecular signaling networks toward an antitumor growth: A novel anti-cancer agent in triple negative breast cancer. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00713-4] [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] Open
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Moon J, Baek SW, Ryu H, Choi Y, Song IC, Yun HJ, Jo DY, Kim S, Lee H. 512P VIP (etoposide, ifosfamide, and cisplatin) in patients with previously treated soft tissue sarcoma. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw597.012] [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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Moon J, Baek SW, Ryu H, Choi Y, Song IC, Yun HJ, Jo DY, Kim S, Lee H. 512P VIP (etoposide, ifosfamide, and cisplatin) in patients with previously treated soft tissue sarcoma. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00670-0] [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: 11/16/2022] Open
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Ryu H, Han D, Kim J, Lee H. 555P Systems-wide bioinformatics analysis using next generation transcriptome and proteomics reveals nicotinamide transforms molecular signaling networks toward an anti-tumor growth: A novel anti-cancer agent in triple negative breast cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw601.006] [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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Inkinen J, Jayaprakash B, Santo Domingo J, Keinänen-Toivola M, Ryu H, Pitkänen T. Diversity of ribosomal 16S DNA- and RNA-based bacterial community in an office building drinking water system. J Appl Microbiol 2016; 120:1723-38. [DOI: 10.1111/jam.13144] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 01/27/2016] [Accepted: 02/01/2016] [Indexed: 12/14/2022]
Affiliation(s)
- J. Inkinen
- Faculty of Technology; WANDER Nordic Water and Materials Institute; Satakunta University of Applied Sciences; Rauma Finland
| | - B. Jayaprakash
- Water and Health Unit; National Institute for Health and Welfare (THL); Kuopio Finland
| | - J.W. Santo Domingo
- U.S. Environmental Protection Agency, Office of Research and Development; Cincinnati OH USA
| | - M.M. Keinänen-Toivola
- Faculty of Technology; WANDER Nordic Water and Materials Institute; Satakunta University of Applied Sciences; Rauma Finland
| | - H. Ryu
- U.S. Environmental Protection Agency, Office of Research and Development; Cincinnati OH USA
| | - T. Pitkänen
- Water and Health Unit; National Institute for Health and Welfare (THL); Kuopio Finland
- U.S. Environmental Protection Agency, Office of Research and Development; Cincinnati OH USA
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Ryu H, Cho A, Seong M, Park S, Lee J, Lim B, Kim K, Hwang Y, Chae J. Mutation spectrum of the dystrophin gene in 507 Korean Duchenne/Becker muscular dystrophy patients. Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.254] [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: 10/23/2022]
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Ryu H, Lee J, Je S, Chung T. 233 Administration of Adipose-Derived Mesenchymal Stem Cells After Transient Global Cerebral Ischemia has an Additory Stimulating Effect on Intrinsic Neurogenesis. Ann Emerg Med 2015. [DOI: 10.1016/j.annemergmed.2015.07.266] [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: 11/26/2022]
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Lee J, Ryu H, Keum G, Yoon YJ, Kowall NW, Ryu H. Therapeutic targeting of epigenetic components in amyotrophic lateral sclerosis (ALS). Curr Med Chem 2015; 21:3576-82. [PMID: 25005187 DOI: 10.2174/0929867321666140706131825] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 05/24/2014] [Accepted: 07/01/2014] [Indexed: 11/22/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is an adult-onset motor neuron disease characterized by degeneration of motor neuron and glial activation followed by the progressive muscle loss and paralysis. Numerous distinct therapeutic interventions have been examined but currently ALS does not have a cure or an efficacious treatment for the disorder. Glutamate- induced excitotoxicity, inflammation, mitochondrial dysfunction, oxidative stress, protein aggregation, transcription deregulation, and epigenetic modifications are associated with the pathogenesis of ALS and known to be therapeutic targets in ALS. In this review, we discuss translational pharmacological studies targeting epigenetic components to ameliorate ALS. Understanding of the epigenetic mechanisms will provide novel insights that will further identify potential biological markers and therapeutic approaches for treating ALS. A combination of treatments that modulate epigenetic components and multiple targets may prove to be the most effective therapy for ALS.
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Affiliation(s)
| | | | | | | | | | - H Ryu
- VA Boston Healthcare System and Department of Neurology, Boston University School of Medicine, 150 South Huntington Avenue, Boston, MA 02130; USA.
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Kwon JW, Park EJ, Jung SY, Sohn H, Ryu H, Suh H. A Large National Cohort Study of the Association between Bisphosphonates and Osteonecrosis of the Jaw in Patients with Osteoporosis. J Dent Res 2015; 94:212S-9S. [DOI: 10.1177/0022034515587862] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [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
The purpose of this study was to examine the association between bisphosphonate exposure and osteonecrosis of the jaw (ONJ) in Korean patients with osteoporosis. A nested case-control study was performed using the claims database during 2002 to 2010 provided by the National Health Insurance Service. We identified a cohort of individuals with diagnosis of osteoporosis during 2002 to 2010. Cases and controls were identified during 2004 to 2010, and the date of potential cases of ONJ was defined as the index date. Bisphosphonate exposure was evaluated during 2 y prior to the index date. The association between bisphosphonate exposure and ONJ was tested by performing a conditional logistic regression analysis for matched data, and odds ratios (ORs) with 95% confidence intervals (CIs) were presented. Subjects were classified as nonuser, recent user, past user, or continuous user, depending on the prescription of bisphosphonates in 2 periods (1 to 2 y and 0 to 1 y prior to the index date). Continuous users were defined as patients who were exposed to bisphosphonate in both periods. We also examined the impact of bisphosphonate medication compliance by measuring the cumulative duration of exposure (CDE) on the risk of ONJ. A total of 212 cases with ONJ and 2,120 controls matched by sex, age, income level, and insurance type were identified among 109,787 patients with osteoporosis out of 1,025,340 enrollees in the sample cohort. The odds of having ONJ after adjusting for patient comorbidities significantly increased in continuous users of bisphosphonates (OR, 3.9; 95% CI, 2.4 to 6.2) compared to nonusers. Increased odds of ONJ were observed as CDE increased. The adjusted OR in patients with 1.5 y < CDE ≤ 2 y prior to the index date was 7.8 (95% CI, 4.0 to 15.5) versus nonusers. Our study results support significantly increased occurrences of potential ONJ in patients with osteoporosis who were exposed to bisphosphonates compared to those without exposure.
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Affiliation(s)
- J.-W. Kwon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Korea
| | - E.-J. Park
- Korea Institute for Health and Social Affairs, Seoul, Korea
| | - S.-Y. Jung
- Office of Pharmacoepidemiology, Korea Institute of Drug Safety and Risk Management
| | - H.S. Sohn
- Graduate School of Clinical Pharmacy, CHA University, Gyeonggi-do, South Korea
| | - H. Ryu
- College of Natural Science, Kyungpook National University, Daegu, South Korea
| | - H.S. Suh
- College of Pharmacy, Pusan National University, Pusan, Korea
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Ryu H, Park I, Kim H, Jung Y. A novel potential prognostic marker SIRT1 on tumor invasion and metastasis, and tumor recurrence in triple negative breast cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv117.15] [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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Abstract
One of the most conspicuous behavioural differences among great apes is the paucity of tool use among wild bonobos (Pan paniscus) in comparison to chimpanzees (Pan troglodytes) who are one of the most prolific and skilled tool users in the animal kingdom. This is in spite of the fact that bonobo tool use repertories are as large and diverse as chimpanzees’ in captive settings. In this study, we compared tool using behaviours and potential drivers of these behaviours in the Wamba bonobo population located in central Democratic Republic of Congo with the Goualougo chimpanzee population of northern Republic of Congo. The tool use repertoire of wild bonobos was comprised of only 13 behaviours, compared to 42 for chimpanzees. However, the number of tool behaviours observed in each study site was similar between bonobos and chimpanzees, and many types of tool use for social, self-grooming/stimulation, and comfort/protection functions were commonly used by both species. A marked difference is that 25 of 42 tool behaviours exhibited by chimpanzees are performed for feeding, in contrast to a single report of bonobos using a leaf sponge to drink water. We examined whether the differences in tool use repertoires can be explained by the necessity, opportunity, relative profitability, or invention hypotheses. We found that habitat composition and fluctuation of fruit production at these two sites were similar, particularly when compared with variation observed between sites within each species. Thus it was unlikely that the necessity hypothesis explains the lack of tool use for feeding in bonobos. Though further study at Wamba is needed, we did not identify any obvious differences in prey availability that would indicate differences in tool using opportunities between the sites. This study could not test the relative profitability hypothesis, and further research is needed on whether tool use is the most efficient means of calorie or protein intake for wild apes. Bonobos at Wamba formed much larger and stable parties than chimpanzees at Goualougo, which was contrary to the prediction by the invention hypothesis. Another explanation is that differences in tool use behaviour between bonobos and chimpanzees might not be explained by the current ecological or social conditions, but rather by circumstances during the Pleistocene Epoch. The observed species differences might also reflect divergent behavioural predispositions, rather than actual differences in cognitive abilities.
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Affiliation(s)
- T. Furuichi
- aPrimate Research Institute, Kyoto University, Inuyama, Aichi 484-5806, Japan
| | - C. Sanz
- bDepartment of Anthropology, Washington University, 1 Brookings Drive, Saint Louis, MO 63130, USA
- cCongo Program, Wildlife Conservation Society, B.P. 14537, Brazzaville, Republic of Congo
| | - K. Koops
- dDepartment of Archaeology and Anthropology, University of Cambridge, Fitzwilliam Street, Cambridge CB2 1QH, UK
| | - T. Sakamaki
- aPrimate Research Institute, Kyoto University, Inuyama, Aichi 484-5806, Japan
| | - H. Ryu
- aPrimate Research Institute, Kyoto University, Inuyama, Aichi 484-5806, Japan
| | - N. Tokuyama
- aPrimate Research Institute, Kyoto University, Inuyama, Aichi 484-5806, Japan
| | - D. Morgan
- cCongo Program, Wildlife Conservation Society, B.P. 14537, Brazzaville, Republic of Congo
- eLester E. Fisher Center for the Study and Conservation of Apes, Lincoln Park Zoo, North Clark Street, Chicago, IL 60614, USA
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Byun J, Son SM, Cha MY, Shong M, Hwang YJ, Kim Y, Ryu H, Moon M, Kim KS, Mook-Jung I. CR6-interacting factor 1 is a key regulator in Aβ-induced mitochondrial disruption and pathogenesis of Alzheimer's disease. Cell Death Differ 2014; 22:959-73. [PMID: 25361083 PMCID: PMC4423180 DOI: 10.1038/cdd.2014.184] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [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: 04/01/2014] [Revised: 08/25/2014] [Accepted: 09/25/2014] [Indexed: 12/13/2022] Open
Abstract
Mitochondrial dysfunction, often characterized by massive fission and other morphological abnormalities, is a well-known risk factor for Alzheimer's disease (AD). One causative mechanism underlying AD-associated mitochondrial dysfunction is thought to be amyloid-β (Aβ), yet the pathways between Aβ and mitochondrial dysfunction remain elusive. In this study, we report that CR6-interacting factor 1 (Crif1), a mitochondrial inner membrane protein, is a key player in Aβ-induced mitochondrial dysfunction. Specifically, we found that Crif1 levels were downregulated in the pathological regions of Tg6799 mice brains, wherein overexpressed Aβ undergoes self-aggregation. Downregulation of Crif1 was similarly observed in human AD brains as well as in SH-SY5Y cells treated with Aβ. In addition, knockdown of Crif1, using RNA interference, induced mitochondrial dysfunction with phenotypes similar to those observed in Aβ-treated cells. Conversely, Crif1 overexpression prevented Aβ-induced mitochondrial dysfunction and cell death. Finally, we show that Aβ-induced downregulation of Crif1 is mediated by enhanced reactive oxygen species (ROS) and ROS-dependent sumoylation of the transcription factor specificity protein 1 (Sp1). These results identify the ROS-Sp1-Crif1 pathway to be a new mechanism underlying Aβ-induced mitochondrial dysfunction and suggest that ROS-mediated downregulation of Crif1 is a crucial event in AD pathology. We propose that Crif1 may serve as a novel therapeutic target in the treatment of AD.
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Affiliation(s)
- J Byun
- Department of Biochemistry and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - S M Son
- Department of Biochemistry and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - M-Y Cha
- Department of Biochemistry and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - M Shong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Y J Hwang
- Center for Neuro-Medicine, Brain Science Institute, KIST, Seoul, Korea
| | - Y Kim
- Center for Neuro-Medicine, Brain Science Institute, KIST, Seoul, Korea
| | - H Ryu
- 1] Center for Neuro-Medicine, Brain Science Institute, KIST, Seoul, Korea [2] Department of Neurology and Pathology, Boston University School of Medicine, Boston, MA, USA
| | - M Moon
- Department of Psychiatry, McLean Hospital/Harvard Medical School, Belmont, MA, USA
| | - K-S Kim
- Department of Psychiatry, McLean Hospital/Harvard Medical School, Belmont, MA, USA
| | - I Mook-Jung
- Department of Biochemistry and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
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Cho YJ, Ryu H, Lee J, Park IK, Kim YT, Lee YH, Lee H, Hong DM, Seo JH, Bahk JH, Jeon Y. A randomised controlled trial comparing incentive spirometry with the Acapella
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device for physiotherapy after thoracoscopic lung resection surgery. Anaesthesia 2014; 69:891-8. [DOI: 10.1111/anae.12750] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2014] [Indexed: 11/30/2022]
Affiliation(s)
- Y. J. Cho
- Department of Anaesthesiology and Pain Medicine Seoul National University Hospital Seoul South Korea
| | - H. Ryu
- Department of Anaesthesiology and Pain Medicine Seoul National University Hospital Seoul South Korea
| | - J. Lee
- Department of Anaesthesiology and Pain Medicine Seoul National University Hospital Seoul South Korea
| | - I. K. Park
- Department of Thoracic and Cardiovascular Surgery Seoul National University Hospital Seoul South Korea
| | - Y. T. Kim
- Department of Thoracic and Cardiovascular Surgery Seoul National University Hospital Seoul South Korea
| | - Y. H. Lee
- Department of Anaesthesiology and Pain Medicine Seoul National University Hospital Seoul South Korea
| | - H. Lee
- Department of Anaesthesiology and Pain Medicine Seoul National University Hospital Seoul South Korea
| | - D. M. Hong
- Department of Anaesthesiology and Pain Medicine Seoul National University Hospital Seoul South Korea
| | - J. H. Seo
- Department of Anaesthesiology and Pain Medicine Seoul National University Hospital Seoul South Korea
| | - J. H. Bahk
- Department of Anaesthesiology and Pain Medicine Seoul National University Hospital Seoul South Korea
| | - Y. Jeon
- Department of Anaesthesiology and Pain Medicine Seoul National University Hospital Seoul South Korea
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Zvyagin SA, Kamenskyi D, Ozerov M, Wosnitza J, Ikeda M, Fujita T, Hagiwara M, Smirnov AI, Soldatov TA, Shapiro AY, Krzystek J, Hu R, Ryu H, Petrovic C, Zhitomirsky ME. Direct determination of exchange parameters in Cs2CuBr4 and Cs2CuCl4: high-field electron-spin-resonance studies. Phys Rev Lett 2014; 112:077206. [PMID: 24579634 DOI: 10.1103/physrevlett.112.077206] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Indexed: 06/03/2023]
Abstract
Spin-1/2 Heisenberg antiferromagnets Cs2CuCl4 and Cs2CuBr4 with distorted triangular-lattice structures are studied by means of electron spin resonance spectroscopy in magnetic fields up to the saturation field and above. In the magnetically saturated phase, quantum fluctuations are fully suppressed, and the spin dynamics is defined by ordinary magnons. This allows us to accurately describe the magnetic excitation spectra in both materials and, using the harmonic spin-wave theory, to determine their exchange parameters. The viability of the proposed method was proven by applying it to Cs2CuCl4, yielding J/kB=4.7(2) K, J'/kB=1.42(7) K, [J'/J≃0.30] and revealing good agreement with inelastic neutron-scattering results. For the isostructural Cs2CuBr4, we obtain J/kB=14.9(7) K, J'/kB=6.1(3) K, [J'/J≃0.41], providing exact and conclusive information on the exchange couplings in this frustrated spin system.
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Affiliation(s)
- S A Zvyagin
- Dresden High Magnetic Field Laboratory (HLD), Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - D Kamenskyi
- Dresden High Magnetic Field Laboratory (HLD), Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - M Ozerov
- Dresden High Magnetic Field Laboratory (HLD), Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - J Wosnitza
- Dresden High Magnetic Field Laboratory (HLD), Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Institüt fur Festkörperphysik, TU Dresden, 01068 Dresden, Germany
| | - M Ikeda
- KYOKUGEN, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - T Fujita
- KYOKUGEN, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - M Hagiwara
- KYOKUGEN, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - A I Smirnov
- P.L. Kapitza Institute for Physical Problems, RAS, 119334 Moscow, Russia
| | - T A Soldatov
- Moscow Institute for Physics and Technology, 141700 Dolgoprudnyi, Russia
| | - A Ya Shapiro
- A.V. Shubnikov Institute of Crystallography, RAS, 119333, Moscow, Russia
| | - J Krzystek
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - R Hu
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - H Ryu
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA and Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - C Petrovic
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA and Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - M E Zhitomirsky
- Service de Physique Statistique, Magnétisme et Supraconductivité, UMR-E9001 CEA-INAC/UJF, 38054 Grenoble Cedex 9, France
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Shin JH, Ryu H, Jang S, Kim S. Task-specific interactive game-based virtual reality rehabilitation system for stroke patients: A usability test and two clinical experiments. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1992] [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: 10/26/2022]
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36
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Kong T, Lee J, Paek J, Chang S, Chang K, Ryu H. Comparison of laparoscopic versus abdominal radical hysterectomy for bulky (≥3cm) FIGO stage IB and IIA cervical cancer. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.185] [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: 10/26/2022]
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37
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Kong T, Son J, Paek J, Chang S, Chang K, Ryu H. Outcomes of cold knife conization according to the margin involvement in high-grade lesions and microinvasive squamous cell carcinoma of the uterine cervix. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.187] [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: 10/26/2022]
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Abstract
Mitochondrial dysfunction and synaptic damage are critical early features of Alzheimer's disease (AD) associated with amyloid β (Aβ) and τ. We previously reported that the scaffolding protein RanBP9, which is overall increased in AD, simultaneously promotes Aβ generation and focal adhesion disruption by accelerating the endocytosis of APP and β1-integrin, respectively. Moreover, RanBP9 induces neurodegeneration in vitro and in vivo and mediates Aβ-induced neurotoxicity. However, little is known regarding the mechanisms underlying such neurotoxic processes. Here, we show that RanBP9 induces the loss of mitochondrial membrane potential and increase in mitochondrial superoxides associated with decrease in Bcl-2, increase in Bax protein and oligomerization, fragmentation of mitochondria, and cytochrome c release. RanBP9-induced neurotoxic changes are significantly prevented by the mitochondrial fission inhibitor Mdivi-1 and by classical inhibitors of the mitochondrial apoptosis, XIAP, Bcl-2, and Bcl-xl. RanBP9 physically interacts with the tumor suppressor p73 and increases endogenous p73α levels at both transcriptional and post-translational levels;moreover, the knockdown of endogenous p73 by siRNA effectively blocks RanBP9 and Aβ1-42-induced mitochondria-mediated cell death. Conversely, siRNA knockdown of endogenous RanBP9 also suppresses p73-induced apoptosis, suggesting that RanBP9 and p73 have cooperative roles in inducing cell death. Taken together, these finding implicate the RanBP9/p73 complex in mitochondria-mediated apoptosis in addition to its role in enhancing Aβ generation.
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Affiliation(s)
- T Liu
- WCU-Neurocytomics Program, Seoul National University College of Medicine, Seoul, Korea
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Song H, Boo JH, Kim KH, Kim C, Kim YE, Ahn JH, Jeon GS, Ryu H, Kang DE, Mook-Jung I. Critical role of presenilin-dependent γ-secretase activity in DNA damage-induced promyelocytic leukemia protein expression and apoptosis. Cell Death Differ 2013; 20:639-48. [PMID: 23306558 DOI: 10.1038/cdd.2012.162] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Promyelocytic leukemia (PML) is a major component of macromolecular multiprotein complexes called PML nuclear-bodies (PML-NBs). These PML-NBs recruit numerous proteins including CBP, p53 and HIPK2 in response to DNA damage, senescence and apoptosis. In this study, we investigated the effect of presenilin (PS), the main component of the γ-secretase complex, in PML/p53 expression and downstream consequences during DNA damage-induced cell death using camptothecin (CPT). We found that the loss of PS in PS knockout (KO) MEFs (mouse embryonic fibroblasts) results in severely blunted PML expression and attenuated cell death upon CPT exposure, a phenotype that is fully reversed by re-expression of PS1 in PS KO cells and recapitulated by γ-secretase inhibitors in hPS1 MEFs. Interestingly, the γ-secretase cleavage product, APP intracellular domain (AICD), together with Fe65-induced PML expression at the protein and transcriptional levels in PS KO cells. PML and p53 reciprocally positively regulated each other during CPT-induced DNA damage, both of which were dependent on PS. Finally, elevated levels of PML-NB, PML protein and PML mRNA were detected in the brain tissues from Alzheimer's disease (AD) patients, where γ-secretase activity is essential for pathogenesis. Our data provide for the first time, a critical role of the PS/AICD-PML/p53 pathway in DNA damage-induced apoptosis, and implicate this pathway in AD pathogenesis.
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Affiliation(s)
- H Song
- Department of Biochemistry and Biomedical Sciences, WCU neurocytomics, College of Medicine, Seoul National University, Seoul, Korea
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Lee H, Lee K, Ryu H, Song I, Huang S, Yun H, Kim J, Jo D, Kim S. The Combined Expression of CXCR7 and its Ligand CXCL12 is a Marker for Unfavorable Prognosis in Gastric Cancer. Ann Oncol 2012. [DOI: 10.1093/annonc/mds418] [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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41
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Kim K, Kim J, Ryu H, Bedikian A, Papadopolous N, Hwu P, Hwu W, Patel S. Increased Incidence of Renal Cell Carcinoma (RCC) Among Melanoma Patients. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33941-7] [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: 10/25/2022] Open
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42
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Han QF, Jeong YI, Heo JH, Shin CM, Ryu H, Park MS, Lee WJ, Yoon JH, Yang JE, Choi H. Magnesium-doped zinc oxide electrochemically grown on fluorine-doped tin oxide substrate. J Nanosci Nanotechnol 2012; 12:3677-3681. [PMID: 22849195 DOI: 10.1166/jnn.2012.5634] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Nanostructures of magnesium (Mg) doped Zinc oxide (ZnO) were successfully deposited on conducting fluorine-doped tin oxide (FTO) coated glass plates by cathodic electrochemical deposition method at different potentials and temperature conditions. The deposited samples were characterized by XRD and SEM techniques to confirm their structures, morphologies and optical properties. These measurements show that Mg doped ZnO has a wurtzite structure and that the strongest intensity of the (002) peak is found at 60 degrees C and -1.0 V. Tunable transmittance of Mg doped ZnO has a band gap energy from 3.45 eV to 3.82 eV, which is the direct evidence of doping.
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Affiliation(s)
- Q F Han
- Department of Nano Systems Engineering, Center for Nano Manufacturing Inje University, Gyeongnam 621-749, Korea
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43
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Chang S, Bristow R, Kong T, Paek J, Ryu H, DiSaia P. A model for prediction of parametrial involvement and feasibility of less radical resection of parametrium in patients with FIGO stage IB1 cervical cancer. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.114] [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: 10/28/2022]
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Weber B, Mahapatra S, Ryu H, Lee S, Fuhrer A, Reusch TCG, Thompson DL, Lee WCT, Klimeck G, Hollenberg LCL, Simmons MY. Ohm’s Law Survives to the Atomic Scale. Science 2012; 335:64-7. [DOI: 10.1126/science.1214319] [Citation(s) in RCA: 263] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- B. Weber
- Centre for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
| | - S. Mahapatra
- Centre for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
| | - H. Ryu
- Network for Computational Nanotechnology, Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA
| | - S. Lee
- Network for Computational Nanotechnology, Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA
| | - A. Fuhrer
- Centre for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
| | - T. C. G. Reusch
- Centre for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
| | - D. L. Thompson
- Centre for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
| | - W. C. T. Lee
- Centre for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
| | - G. Klimeck
- Network for Computational Nanotechnology, Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA
| | - L. C. L. Hollenberg
- Centre for Quantum Computation and Communication Technology, School of Physics, University of Melbourne, Parkville, VIC 3010, Australia
| | - M. Y. Simmons
- Centre for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
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Cho H, Chun H, Keum B, Kim Y, Jeen Y, Seo Y, Lee H, Um S, Kim C, Ryu H. Ethanol-induced DNA damage and the expression of repair-related molecules in human gastric carcinoma AGS cells with use of an acid pump antagonist and proton pump inhibitor. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.30] [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
30 Background: Proton pump inhibitor (PPI) inhibits gastric acid secretion by strongly suppressing H + / K +- ATPase of parietal cells and is a major drug for peptic ulcers and gastroesophageal reflux. Recently it was reported that PPI has antioxidant and anti- inflammatory effects as well as a powerful acid inhibitory effect. To analyze the DNA repair capacity from the antioxidant effect of acid pump antagonist (Revanex-RN) and proton pump inhibitor (Omeprazole-OP), this study examined ethanol-induced DNA damage and the expression of repair related molecules in human gastric cancer AGS cells pretreated with an acid pump antagonist and a proton pump inhibitor. Methods: AGS, a human gastric cancer cell line was obtained from ATCC, was treated with ethanol (0, 2, 4, 6, 8, 10%) during 1hr. MTT and Comet assay were performed to evaluate ethanol-induced DNA damage. The optimum concentration of ethanol which caused DNA damage was established. And AGS cells were cultured in proper concentration of RN or OP overnight. Then, these cells were treated with 5% ethanol during 1hr. DNA damage and recovery were represented the value of Olive tail moment in comet assay. Western blot was also performed to detect expression of DNA polymerase beta, APE/ref-1, PCNA, and GADD45. Results: The DNA damage of AGS cell depended upon ethanol concentration distinctly. Damaged cells showed up recovered tendency in the group treated with low dose RN or OP. In addition, DNA repair enzymes including DNA polymerase beta and APE/ref-1 which were associated with mechanism of base excision repair (BER) were increased. A relevant protein such as GADD45 was also increased significantly. Conclusions: PPI has capacity to recover damaged DNA, which is associated with increased expression of GADD45 directly. Therefore, PPI offers cancer prevention by reducing the level of DNA damage in the gastric mucosa. GADD45 is also likely to suggest that it could be used a major factor on the injury mechanism and an indicator of mucosal damage in stomach. Moreover, RN, an acid pump antagonist is expected to have the higher safety compared to the existing PPIs and considered to be equal to PPIs in terms of anti-cancer effect. No significant financial relationships to disclose.
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Affiliation(s)
- H. Cho
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - H. Chun
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - B. Keum
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - Y. Kim
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - Y. Jeen
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - Y. Seo
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - H. Lee
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - S. Um
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - C. Kim
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - H. Ryu
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
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Kim E, Jeen Y, Cho H, Keum B, Kim Y, Lee H, Chun H, Kim C, Ryu H. Novel multiphoton microscopy probe and feasibility study for colon cancer: Probe on trace elements–related antioxidant. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.463] [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: 11/20/2022] Open
Abstract
463 Background: Multiphoton microscopy (MPM) has gained increasing popularity during the past few years because of the distinct advantages over single-photon microscopy, which includes increased penetration depth and low out-of-focus photodamage. However, there had been no report on multiphoton probes for malignancy. Previous studies reported that Zn and Cu ions which are co-factor of antioxidants such as superoxide dismutase (SOD), altered in malignancy tissue. The aim of this study was to evaluate application of the multiphoton (MP) probe of Zn and Cu for colon cancer tissues. Methods: We monitored the Zn/Cu ions in the colon cancer cell lines with multiphoton probe Microscopy. The multiphoton probe AZn2+ (C38H38N6O3) and ACu+ (C34H47N3O3S4), we developed and obtained the patent on it, were stained in live cancer cell lines. The tissues of colon cancer, adenoma and normal mucosa were obtained by biopsy during colonoscopy. Then the tissues were stained with 20μM of the MP probes for Zn/Cu ions. The distribution and concentration of zinc and copper ions were monitored by MPM by following the change in MPEF along the depth of tissue. Results: The majority of Zn2+ and Cu+ ions distributed in cytosole. The average multi-photon excited fluorescence (MPEF) intensities due to Cu, Zn, and Cu/Zn ratio were remarkably different between the normal mucosa and adenoma/adenocarcinoma tissues. The Zn2+ content was significantly lower and the Cu2+ content was significantly higher to result in a much lower the Zn/Cu ratio in adenoma/adenocarcinoma than in normal mucosa tissues. Conclusions: We have obtained multiphoton microscopy images of normal and cancer cell lines as well as mucosa and adenoma/adenocarcinoma tissues labeled with newly developed MP probes AZn1 and ACu1. No significant financial relationships to disclose.
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Affiliation(s)
- E. Kim
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - Y. Jeen
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - H. Cho
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - B. Keum
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - Y. Kim
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - H. Lee
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - H. Chun
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - C. Kim
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - H. Ryu
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
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Lee B, Jeung K, Moon J, Ryu H. 385: The Variations of Clinical Feature According to Organophosphorus Pesticide Toxicity. Ann Emerg Med 2010. [DOI: 10.1016/j.annemergmed.2010.06.441] [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: 10/19/2022]
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Versieren K, Heindryckx B, Qian C, Gerris J, De Sutter P, Exposito Navarro A, Ametzazurra A, Nagore D, Crisol L, Aspichueta F, Mendoza R, Matorras R, Garcia MM, Valley JK, Swinton PS, Boscardin WJ, Lue TF, P. Rinaudo, Wu MC, Bern O, Strassburger D, Komarovsky D, Kasterstein E, Komsky A, Maslansky B, Raziel A, Friedler S, Gidoni Y, Ron-El R, Tang J, Fang C, Zhang MF, Li T, Zhuang GL, Suh DS, Joo JK, Choi JR, Kim SC, JO MS, Kim KH, Lee KS, Katz-Jaffe MG, Stevens J, McCormick S, Smith R, Schoolcraft WB, Ben-Ami I, Komsky A, Strassburger D, Bern O, Komarovsky D, Kasterstein E, Maslansky B, Raziel A, Friedler S, Gidoni Y, Ron-El R, Koch J, Costello M, Kilani S, Namm A, Arend A, Aunapuu M, Joo JK, Lee KS, Choi YM, Cho JD, Sipe C, Pelts EJ, Matthews JM, Sanchez SR, Brohammer RLB, Wagner Y, Liebermann J, Uhler M, Beltsos A, Chen MJ, Guu HF, Chen YF, Yih YJ, Ho JYP, Lin TY, Ho ESC, Lopes FB, Figueira RCS, Braga DPAF, Ferreira RC, Aoki T, Iaconelli A, Borges E, Van de Velde H, Cauffman G, Verloes A, De Paepe C, Sterckx J, Van Ranst H, Devroey P, Tournaye H, Liebaers I, Santos MA, Teklenburg G, Macklon NS, Van Opstal D, Schuring-Blom GH, Krijtenburg PJ, de Vreeden-Elbertse J, Fauser BC, Baart EB, Cawood S, Doshi A, Gotts S, Serhal P, Milachich T, Petkova L, Barov D, Shterev A, Esteves TC, Balbach ST, Arauzo-Bravo MJ, Pfeiffer MJ, Boiani M, Le Gac S, van Rossem F, Esteves T, Bioani M, van den Berg A, Valeri C, Pappalardo S, De Felici M, Manna C, Ryu H, Park CY, Min SH, Choi SK, Park C, Lee SH, Kim KR, Jeong H, Chi HJ, Wittemer C, Celebi C, Viville S, Luceno Maestre F, Castilla Alcala JA, Gomez-Palomares JL, Cabello Y, Hernandez J, Marqueta J, Herrero J, Vidal E, Fernandez-Shaw S, Coroleu B, McRae C, Baskind E, Sharma V, Fisher J, Boldi Cotti P, Colasante C, Perego L, De Lauretis L, Montag M, Koster M, Nikolov A, van der Ven H, Lee SG, Lee YC, Kang SM, Kang YJ, Shin YK, Jung JH, Lim JH, Dorfmann A, Carroll K, Sisson M, Geltinger M, Yap S, Iwaszko M, Hara T, Naruse K, Matsuura K, Kodama T, Sato K, Tateaki Y, Tanaka J, Minasi MG, Scarselli F, Rubino P, Casciani V, Colasante A, Lobascio M, Alviggi E, Ferrero S, Litwicka K, Iammarrone E, Cucinelli F, Giannini PG, Tocci A, Nagy ZP, Greco E, Borini A, Tarozzi N, Fiorentin D, Bonu MA, Nadalini M, Johnson J, De Santis L, Bianchi V, Casciani V, Rubino P, Minasi MG, Colasante A, Scarselli F, Lobascio AM, Arizzi L, Iammarrone E, Litwicka K, Ferrero S, Tocci A, Piscitelli C, Cucinelli F, Nagy ZP, Greco E, Mesut N, Ciray HN, Mesut A, Aksoy T, Bahceci M, Lee YM, Chen HW, Wu P, Tzeng CR, Antonova I, Milachich T, Petkova L, Yunakova M, Chaveeva P, A. Shterev, Hlinka D, Dudas M, Rutarova J, Rezacova J, Lazarovska S, Aoi Y, Takahashi H, Saitou H, Takiue C, Kawakami N, Tone M, Hirata R, Terada S, Yoshioka N, Habara T, Hayashi N, Montagut J, Bonald F, Guillen N, Guitard V, Balu-Genvrin E, Crae E, Nogueira D, Silva J, Cunha M, Viana P, Teixeira da Silva JM, Oliveira C, Goncalves A, Barros N, Sousa M, Barros A, van de Werken C, Jahr H, Laven JSE, Baart EB, Gamiz Izquierdo P, De los Santos JM, Tejera A, Pellicer A, Romero JL, Galan A, Albert C, Santos MJDL, Adriaenssens T, Wathlet S, Segers I, Verheyen G, Van De Velde H, Coucke W, Devroey P, Smitz J, Paternot G, D'Hooghe TM, Debrock S, Spiessens C, Hwang HK, Kim HM, Lee JH, Jung YJ, Kang A, Kook MJ, Jung JY, An SJ, Kwon HC, Lee SJ, Somova O, Feskov A, Feskova I, Chumakova N, Zozulina O, Zhilkova YE, Binda M, Campo R, Van Kerkhoven G, Frederickx V, Serneels A, Roziers P, Vranken I, Lopes AS, Van Nuland A, Gordts S, Puttemans P, Valkenburg M, Gordts S, Rodriguez-Arnedo A, Ten J, Guerrero J, Lledo B, Carracedo MA, Ortiz JA, Llacer J, Bernabeu R, Usui K, Nakajo Y, Ota M, Hattori H, Kyoya T, Takisawa T, Kyono K, Ferrieres A, Poulain M, Loup V, Anahory T, Dechaud H, Hamamah S, Eckert J, Premkumar G, Lock F, Brooks S, Haque S, Cameron IT, Cheong Y, Fleming TP, Prados N, Ruiz M, Garcia-Ortega J, Vime P, Hernaez MJ, Crespo M, Fernandez-Sanchez M, Pellicer A, Hashimoto S, Kato N, Saeki K, Morimoto Y, Leung CON, Pang RTK, Liu WM, Lee KF, Yeung WSB, Wada T, Elliott T, Kahn J, Lowderman J, Wright G, Chang C, Bernal D, Kort H, Nagy Z, de los Santos JM, Escrich L, Grau N, Pellicer A, Romero JL, Escriba MJ, Escriba M, Grau N, Escrich L, de los Santos JM, Pellicer A, Romero JL, Tasker F, Hamoda H, Wilner H, Grace J, Khalaf Y, Miyaji S, Mizuno S, Horiuchi L, Haruki A, Fukuda A, Morimoto Y, Utsunomiya T, Kumasako Y, Ito H, Goto K, Koike M, Abe H, Sakamoto T, Kojima F, Koshika T, Muzii L, Magli MC, Gioia L, Scaravelli G, Ferraretti AP, Gianaroli L, Capoti A, Magli MC, Lappi M, Maggi E, Ferraretti AP, Gianaroli L, Scott L, Finn A, Kloos B, Davies D, Yamada M, Hamatani T, Akutsu H, Chikazawa N, Ogawa S, Okumura N, Mochimaru Y, Kuji N, Aoki D, Yoshimura Y, Umezawa A, Aprysko VP, Yakovenko SA, Seregina EA, Yutkin EV, Yelke H, Milik S, Candan ZN, Altin G, Unal S, Atayurt Z, Y. Kumtepe, Chung JT, Son WY, Zhang X, Tan SL, Ao A, Seli E, Botros L, Henson M, Roos P, Judge K, Sakkas D, group MSGMS, Feliciano M, Monahan D, Ermolovich E, Rosenwaks Z, Palermo GD, Mantikou E, van Echten-Arends J, Sikkema-Raddatz B, van der Veen F, Repping S, Mastenbroek S, Botros L, Seli E, Henson M, Roos P, Judge K, Sakkas D, Group MBS, Wells V, Thum MY, Abdalla HI, Machiya R, Akimoto S, Nobuyoshi T, Yoshii N, Hosaka T, Odawara Y, Heindryckx B, Vanden Meerschaut F, Lierman S, Qian C, O'Leary T, Gerris J, De Sutter P, Assou S, Haouzi D, Pellestor F, Monzo C, Dechaud H, De Vos J, Hamamah S, Conaghan J, Fischer E, Popwell J, Ryan I, Chenette P, Givens C, Schriock E, Herbert C, Ermolovich E, Monahan D, Neri QV, Rosenwaks Z, Palermo GD, Verheyen G, Camus M, Van de Velde H, Haentjens P, Devroey P, Mugica A, Esbert M, Molina JM, Garrido N, Pellicer A, Ballesteros A, Calderon G, Rossi ALS, Rocha AM, Alegretti JR, Hassun PA, Gomes LP, Criscuollo T, Serafini P, Motta ELA, Munoz M, Meseguer M, Cruz M, Perez-Cano I, Pellicer A, Gadea B, Martinez M, Fortuno S, Gundersen J, Garrido N, Cruz M, Garrido N, Perez-Cano I, Munoz M, Pellicer A, Martinez M, Gadea B, Selles E, Betersen J, Meseguer M, Le Meaux E, Assou S, Haouzi D, Loup V, Dechaud H, De Vos J, Hamamah S, Ouandaogo G, Assou S, Haouzi D, Ferrieres A, Anahory T, De Vos J, Hamamah S, Monzo C, Assou S, Haouzi D, Pellestor F, Dechaud H, De Vos J, S. Hamamah, Gismano E, Borini A, Cino I, Calzi F, Rabellotti E, Papaleo E, Bianchi V, De Santis L, Sunkara SK, Siozos A, Bolton V, Khalaf Y, Braude P, El-Toukhy T, Cho YS, Ambruosi B, Totaro P, Dell'Aquila ME, Gioacchini G, Bizzaro D, Giorgini E, Ferraris P, Sabbatini S, Carnevali O, Knaggs P, Chau A, Khalil S, Trew G, Lavery S, Jovanovic VP, Gomez R, Sauer CM, Shawber CJ, Outtz HH, Wang X, Sauer MV, Kitajewski J, Zimmermann RC, Mahrous E, Clarke H, Virant-Klun I, Bacer-Kermavner L, Mivsek J, Tomazevic T, Pozlep B, Zorn B, Vrtacnik-Bokal E, Dundure I, Bazarova J, Fodina V, Brikune J, Lakutins J, Jee B, Jo J, Lee J, Suh C, Kim S, Moon S, Shufaro Y, Lebovich M, Aizenman E, Simon A, Laufer N, A. Saada Reisch, Ribeiro MA, Pinto A, Gomes F, Silva Carvalho JL, Almeida H, Massaro FC, Petersen CG, Mauri AL, Silva LFI, Nicoletti APM, Cavagna M, Pontes A, Baruffi RLR, Oliveira JBA, Franco JG, Valcarcel A, Viglierchio MI, Tiveron M, Guidobono M, Inza R, Vilela M, Vilela M, Valcarcel A, Viglierchio MI, Kenny A, Lombardi C, Marconi G. Posters * Embryology (Embryo Selection). Hum Reprod 2010. [DOI: 10.1093/humrep/de.25.s1.140] [Citation(s) in RCA: 2] [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: 11/14/2022] Open
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Mayer BK, Ryu H, Gerrity D, Abbaszadegan M. Development and validation of an integrated cell culture-qRTPCR assay for simultaneous quantification of coxsackieviruses, echoviruses, and polioviruses in disinfection studies. Water Sci Technol 2010; 61:375-387. [PMID: 20107264 DOI: 10.2166/wst.2010.818] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This study demonstrated the applicability of integrated cell culture-quantitative RTPCR (ICC-qRTPCR) for the simultaneous quantification of coxsackievirus, echovirus, and poliovirus in disinfection studies. Buffalo green monkey cells were inoculated with a 10-fold dilution series of mixed enteroviruses and incubated prior to qRTPCR quantification. Optimal assay conditions included three post infection washes and a 24-hour post infection incubation period based on successful differentiation between infectious and noninfectious viruses and significant and consistent viral replication rates. Ultraviolet disinfection studies were performed to validate the ICC-qRTPCR assay. Using the optimized assay, three-log microbial inactivation was achieved at UV doses of 30-44, 28-42, and 28-29 mJ/cm(2) for coxsackievirus B6, echovirus 12, and poliovirus 1, respectively. These results compare favorably to side-by-side assessments using conventional cultural techniques and values previously reported in the literature. This indicates that ICC-qRTPCR is a practical alternative for the simultaneous quantification of enteroviruses in disinfection studies.
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Affiliation(s)
- B K Mayer
- Arizona State University, Tempe, AZ 85287-5306, USA.
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Yang J, Lee S, Kim M, Ryu H, Chung J, Choi J. O1021 The maternal bone mineral density at second trimester of pregnancy can reflect the fetal growth at birth. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61394-1] [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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