1
|
Caravaca J, Bobba KN, Du S, Peter R, Gullberg GT, Bidkar AP, Flavell RR, Seo Y. A technique to quantify very low activities in regions of interest with a collimatorless detector. IEEE Trans Med Imaging 2024; PP:1-1. [PMID: 38478457 DOI: 10.1109/tmi.2024.3377142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
We present a new method to measure sub-microcurie activities of photon-emitting radionuclides in organs and lesions of small animals in vivo. Our technique, named the collimator-less likelihood fit, combines a very high sensitivity collimatorless detector with a Monte Carlo-based likelihood fit in order to estimate the activities in previously segmented regions of interest along with their uncertainties. This is done directly from the photon projections in our collimatorless detector and from the region of interest segmentation provided by an x-ray computed tomography scan. We have extensively validated our approach with 225Ac experimentally in spherical phantoms and mouse phantoms, and also numerically with simulations of a realistic mouse anatomy. Our method yields statistically unbiased results with uncertainties smaller than 20% for activities as low as ~111 Bq (3 nCi) and for exposures under 30 minutes. We demonstrate that our method yields more robust recovery coefficients when compared to SPECT imaging with a commercial pre-clinical scanner, specially at very low activities. Thus, our technique is complementary to traditional SPECT/CT imaging since it provides a more accurate and precise organ and tumor dosimetry, with a more limited spatial information. Finally, our technique is specially significant in extremely low-activity scenarios when SPECT/CT imaging is simply not viable.
Collapse
|
2
|
Park S, Bang JI, Kim K, Seo Y, Chong A, Hong CM, Lee DE, Choi M, Lee SW, Oh SW. Comparison of Recombinant Human Thyroid-Stimulating Hormone and Thyroid Hormone Withdrawal for 131 I Therapy in Patients With Intermediate- to High-Risk Thyroid Cancer : A Systematic Review and Meta-analysis. Clin Nucl Med 2024; 49:e96-e104. [PMID: 38271262 DOI: 10.1097/rlu.0000000000005022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
BACKGROUND This meta-analysis and systematic review aimed to evaluate the therapeutic efficacy and advantages associated with the use of recombinant human thyroid-stimulating hormone (rhTSH) for radioactive iodine (RAI) therapy in patients with intermediate- to high-risk differentiated thyroid cancer. PATIENTS AND METHODS MEDLINE, EMBASE, and Cochrane databases were searched to identify relevant articles reporting clinical outcomes of rhTSH compared with thyroid hormone withdrawal (THW) in patients with intermediate- to high-risk differentiated thyroid cancer published between January 2012 and June 2023. Meta-analyses were performed (PROSPERO registration number: CRD42022340915) to assess the success rate of radioiodine remnant ablation (RRA) in patients with intermediate to high risk and determine the disease control rate among patients with distant metastases, evaluated using the RECIST criteria. RESULTS Thirteen studies involving 1858 patients were included in the meta-analysis. Pooled analyses revealed significantly higher overall RRA success rate in the rhTSH group compared with the THW group, with a risk ratio (RR) of 1.12 (95% confidence interval [CI], 1.01-1.25). However, in the subgroup analysis of high-risk patients, pooled analyses showed no significant differences in RRA success rate between the rhTSH group compared with the THW group with a pooled RR of 1.05 (95% CI, 0.88-1.24). In patients with distant metastases, there were no significant differences in the disease control rate between groups, with a pooled RR of 1.06 (95% CI, 0.78-1.44). CONCLUSIONS rhTSH for RAI therapy is a practical option for RAI therapy in patients with intermediate- to high-risk thyroid cancer, including those with distant metastases.
Collapse
Affiliation(s)
- Sohyun Park
- From the Department of Nuclear Medicine, National Cancer Center Hospital, Goyang
| | - Ji-In Bang
- Department of Nuclear Medicine, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Keunyoung Kim
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital and School of Medicine, Pusan National University, Pusan
| | - Youngduk Seo
- Department of Nuclear Medicine, Chungnam National University Sejong Hospital, Sejong
| | - Ari Chong
- Department of Nuclear Medicine, Chosun University Hospital and College of Medicine, Gwangju
| | - Chae Moon Hong
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Daegu
| | - Dong-Eun Lee
- Biostatistics Collaboration Team, National Cancer Center, Goyang
| | - Miyoung Choi
- Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul
| | - Sang-Woo Lee
- Department of Nuclear Medicine, Kyungpook National University, School of Medicine and Chilgok Hospital, Daegu
| | - So Won Oh
- Department of Nuclear Medicine, Seoul National University Boramae Medical Center, Seoul, South Korea
| |
Collapse
|
3
|
Chong A, Seo Y, Bang JI, Park S, Kim K, Hong CM, Choi M, Oh SW, Lee SW. Clinical Implications of Adding SPECT/CT to Radioiodine Whole-Body Scan in Patients With Differentiated Thyroid Cancer: A Systematic Review and Meta-analysis. Clin Nucl Med 2024; 49:215-225. [PMID: 38048517 DOI: 10.1097/rlu.0000000000004953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
PURPOSE This study aimed to determine the usefulness of adding SPECT/CT to radioiodine whole-body scans (WBSs) for the treatment of differentiated thyroid cancer (DTC). PATIENTS AND METHODS A systematic review and meta-analysis were performed following the PRISMA guidelines (PROSPERO registration: CRD42022341732) to compare the feasibility of conclusive readings and the frequency of changes in treatment plans in patients with DTC undergoing WBS + SPECT/CT versus WBS. MEDLINE, EMBASE, and Cochrane databases were searched to identify relevant articles concerning thyroid cancer, radioactive iodine, and SPECT/CT or SPECT, published before August 16, 2023. Studies not comparing WBS + SPECT/CT with WBS, those lacking target outcomes, and those not involving human subjects were excluded. The risk of bias was assessed using the RoBANS 2.0 (Risk of Bias Assessment Tool for Nonrandomized Studies) tool. The GRADE (Grading of Recommendations, Assessment, Development, and Evaluation) system was used to evaluate the quality of evidence and strength of recommendations. RESULTS A total of 30 studies (prospective n = 9, retrospective n = 21) were included in the meta-analyses. Adding SPECT/CT to WBS was shown to increase conclusive readings for cervical lesions, extracervical lesions, and all regions. Lesion-based analyses showed improvements of 14%, 20%, and 18%, respectively, whereas scan-based analyses showed improvements of 27%, 9%, and 34%. The addition of SPECT/CT to WBS led to changes in 30% of treatment plans after diagnostic scans and 9% of treatment plans after posttherapeutic scans. The quality of evidence and strength of recommendations were low. CONCLUSIONS Compelling evidence demonstrates that the addition of SPECT/CT to WBS improves lesion localization, diagnostic performance, and therapy plan for patients with DTC.
Collapse
Affiliation(s)
- Ari Chong
- From the Department of Nuclear Medicine, Chosun University, College of Medicine and Chosun University Hospital, Gwangju
| | - Youngduk Seo
- Department of Nuclear Medicine, Chungnam National University Sejong Hospital, Sejong
| | - Ji-In Bang
- Department of Nuclear Medicine, CHA Bundang Medical Center, CHA University, Pocheon
| | - Sohyun Park
- Department of Nuclear Medicine, Hospital, National Cancer Center, Goyang
| | - Keunyoung Kim
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital and School of Medicine, Pusan National University, Busan
| | - Chae Moon Hong
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Daegu
| | - Miyoung Choi
- Division of Health Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency
| | - So Won Oh
- Department of Nuclear Medicine, Seoul National University Boramae Medical Center, Seoul
| | - Sang-Woo Lee
- Department of Nuclear Medicine, Kyungpook National University, School of Medicine and Chilgok Hospital, Daegu, South Korea
| |
Collapse
|
4
|
Piao S, Kim S, Seo Y, Lee J, Jeon S, Vu GH, Yeo MK, Kim CS. The relative isoform expression levels of isocitrate dehydrogenase in breast cancer: IDH2 is a potential target in MDA-MB-231 cells. Korean J Clin Oncol 2023; 19:60-68. [PMID: 38229490 DOI: 10.14216/kjco.23011] [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] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 12/05/2023] [Indexed: 01/18/2024]
Abstract
PURPOSE The isocitrate dehydrogenase (IDH) family plays an essential role in metabolism and energy production. The relative expression levels of IDH isoforms (IDH1, IDH2, and IDH3) have prognostic significance in several malignancies, including breast carcinoma. However, the IDH isozyme expression levels in different cancer stages and types have not been determined in breast carcinoma tissues. METHODS We analyzed the messenger RNA (mRNA) and protein levels of IDH (IDH1, IDH2, and IDH3A) and α-ketoglutarate (α-KG) in 59 breast carcinoma tissues. RESULTS The mRNA level of IDH2 was significantly increased at stages 2 and 3 in triple-negative and (ER-/PR-/HER+) breast cancers. However, the elevated α-KG level was only observed in stages 2 and 3, with no differences in the various breast carcinoma types. Western blotting analysis showed that IDH2 protein expression increased in the patient tissues and cell lines. An in vitro study showed IDH2 downregulation in the triple-negative breast cancer cell line MDA-MB-231 that inhibited cell proliferation and migration and induced cell cycle arrest in the G0/G1 phase. CONCLUSION These findings suggest that different from IDH1 and IDH3, IDH2 is more highly expressed in stages 2 and 3 breast cancer tissues, especially in triple-negative breast cancer. IDH2 potentially serves as a target to detect unknown mechanisms in breast cancer.
Collapse
Affiliation(s)
- Shuyu Piao
- Department of Physiology and Medical Science, Chungnam National University College of Medicine, Daejeon, Korea
| | - Seonhee Kim
- Department of Physiology and Medical Science, Chungnam National University College of Medicine, Daejeon, Korea
| | - Youngduk Seo
- Department of Nuclear Medicine, Chungnam National University Sejong Hospital, Sejong, Korea
| | - Jinsun Lee
- Department of Surgery and Research Institute for Medical Sciences, Chungnam National University College of Medicine, Daejeon, Korea
| | - Sunhee Jeon
- Department of Physiology and Medical Science, Chungnam National University College of Medicine, Daejeon, Korea
| | - Giang-Huong Vu
- Department of Physiology and Medical Science, Chungnam National University College of Medicine, Daejeon, Korea
| | - Min-Kyung Yeo
- Department of Pathology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Cuk-Seong Kim
- Department of Physiology and Medical Science, Chungnam National University College of Medicine, Daejeon, Korea
| |
Collapse
|
5
|
Lall R, Evans M, Seo Y, Niknejad A, Anwar M. Dosimetry Reconstruction in Radiopharmaceutical Therapy Using a Sparse Network of External γ-Sensors. Int J Radiat Oncol Biol Phys 2023; 117:S30-S31. [PMID: 37784473 DOI: 10.1016/j.ijrobp.2023.06.293] [Citation(s) in RCA: 1] [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] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Radiopharmaceutical therapy (RPT) has demonstrated promise in the treatment of neuroendocrine and prostate cancer. Due to the highly varied biodistribution and non-homogeneity of total integrated dose across cancer patients, a system for real-time dosimetry based on continuous measurement is desirable to deliver sufficient dose for tumor ablation while preventing toxicity from off-target uptake by organs at risk (OAR). Single time point imaging (mostly SPECT)-based dosimetry offers a snapshot of the body-wide dose distribution at a given time point, but even single SPECT imaging is generally limited in availability, often leading to significant inaccuracies in estimating total integrated dose. Therefore, accurate personalized dosimetry in RPT is an unmet need and requires continuous dosimetry measurements of tumors and OARs across multiple half-lives of the therapeutic radiopharmaceutical. Using a priori knowledge of tumor and OAR locations from pretherapy imaging, we have developed a novel algorithm that utilizes a network of custom uncollimated, optical fiber-based γ-counting probes to isolate the real-time in vivo tumor and OAR uptake in 177Lu-PSMA-617 and 225Ac-MACROPA-YS5 therapy. MATERIALS/METHODS The proposed system was successfully validated in athymic mice models bearing varying numbers of tumors from two human prostate cancer cell lines (PC3-pip, PC3-flu). Uncollimated γ counts using the developed probes were acquired outside of the mice for 10 minutes, starting at 0 hr, 6 hrs, 12 hrs, 24 hrs, and 48 hrs after the injection of 177Lu-PSMA-617. The percent injected activity per mL of tissue (%IA/mL) of each tumor and OAR was reconstructed at every time point and compared to the %IA/mL extracted from SPECT/CT immediately after the recording. RESULTS The developed system's %IA/mL reconstruction in PC3-pip tumors, PC3-flu tumors, kidneys, and bladders is highly correlative with the %IA/mL extracted from state-of-art in vivo dosimetry techniques, with %IA/mL ranging from 0.1% to 160% assuming a 29.6 MBq 177Lu-PSMA-617 administration. The least squares linear regression fit between the reconstructed activity and the activity measured from SPECT/CT is given by Estimated %IA/mL = 0.91 x SPECT %IA/mL, with an R2 of 0.991, and Pearson's r of 0.9975. There is a nearly 1:1 mapping between the proposed model and SPECT/CT. CONCLUSION A novel dose reconstruction algorithm for personalized dosimetry in RPT that utilizes a sparse set of external γ-counters and a priori knowledge of tumor and OAR locations was developed and validated in in vivo human prostate cancer murine models. The proposed system enables continuous dosimetry measurements of multiple tumors and OAR noninvasively, with high accessibility, high temporal resolution, and across multiple classes of ɑ and β-based RPT. Similar experiments using 225Ac-MACROPA-YS5 are ongoing and additional results will be reported.
Collapse
Affiliation(s)
- R Lall
- University of California, Berkeley, Berkeley, CA
| | - M Evans
- University of California, San Francisco, San Francisco, CA
| | - Y Seo
- University of California, San Francisco, San Francisco, CA
| | - A Niknejad
- University of California, Berkeley, Berkeley, CA
| | - M Anwar
- University of California, San Francisco, San Francisco, CA
| |
Collapse
|
6
|
Bang JI, Park S, Kim K, Seo Y, Chong A, Hong CM, Choi M, Lee SW, Oh SW. The Diagnostic Value of 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography in Differentiated Thyroid Cancer Patients with Elevated Thyroglobulin/Thyroglobulin Antibody Levels and Negative Iodine Scintigraphy: A Systematic Review and Meta-Analysis. Thyroid 2023; 33:1224-1236. [PMID: 37597200 DOI: 10.1089/thy.2023.0264] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/21/2023]
Abstract
Background: The objective of this study is to evaluate the diagnostic accuracy of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) in detecting recurrence in patients with differentiated thyroid cancer (DTC) who have negative whole-body scans (WBSs) but elevated serum thyroglobulin (Tg) or thyroglobulin antibody (TgAb) levels. Methods: This systematic review/meta-analysis was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analysis for Diagnostic Test Accuracy criteria (International Prospective Register of Systematic Reviews registration number: CRD42022340924). A comprehensive search of the MEDLINE, EMBASE, and Cochrane databases identified articles reporting the diagnostic accuracy of FDG PET/CT for the detection of recurrence in patients with DTC with negative WBS and elevated serum Tg or TgAb levels published between January 2012 and June 2023. Meta-analyses were performed to determine the diagnostic accuracy of FDG PET/CT on the total target population as well as on subgroups stratified by serum Tg or TgAb, and thyrotropin (TSH) stimulation status at the time of FDG PET/CT. The Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) framework was applied to evaluate the quality of evidence and the strength of recommendations to facilitate translation of the meta-analysis results into practical recommendations for clinical guidelines. Results: A total of 24 studies involving 1988 patients were included for analysis. The overall pooled sensitivity and specificity values were 0.87 (95% confidence interval [CI] = 0.83-0.92; I2 = 75%) and 0.84 (CI = 0.80-0.89; I2 = 44%), respectively. Subgroup analyses revealed no significant differences in the diagnostic accuracy of FDG PET/CT in patients stratified by serum Tg or TgAb levels, and TSH stimulation status at the time of PET/CT. Treatment plans were changed following FDG PET/CT imaging in 40% (CI = 34-47%; I2 = 39%) of cases. The quality level of evidence for using FDG PET/CT was moderate in both sensitivity and specificity according to the GRADE system. Conclusion: There is moderate quality evidence demonstrating the high diagnostic accuracy of FDG PET/CT in detecting recurrence in patients with DTC with negative WBS and elevated serum Tg or TgAb levels. This evidence corroborates the current guidelines' endorsement of FDG PET/CT as a diagnostic tool in such patients.
Collapse
Affiliation(s)
- Ji-In Bang
- Department of Nuclear Medicine, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Republic of Korea
| | - Sohyun Park
- Department of Nuclear Medicine, National Cancer Center Hospital, Gyeonggi-do, Republic of Korea
| | - Keunyoung Kim
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital and School of Medicine, Pusan National University, Pusan, Republic of Korea
| | - Youngduk Seo
- Department of Nuclear Medicine, Chungnam National University Sejong Hospital, Sejong, Korea
| | - Ari Chong
- Department of Nuclear Medicine, College of Medicine, Chosun University, Gwangju, Korea
| | - Chae Moon Hong
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Miyoung Choi
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Korea
| | - Sang-Woo Lee
- Department of Nuclear Medicine, Kyungpook National University, School of Medicine and Chilgok Hospital, Daegu, Republic of Korea
| | - So Won Oh
- Department of Nuclear Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| |
Collapse
|
7
|
Pak K, Kim H, Seok JW, Lee MJ, Shin S, Kim K, Lee JM, Seo Y, Kim BS, Jun S, Kim IJ. Correction to: Prediction of future weight change with dopamine transporter in patients with Parkinson's disease. J Neural Transm (Vienna) 2023; 130:1317. [PMID: 37133620 DOI: 10.1007/s00702-023-02637-2] [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: 05/04/2023]
Affiliation(s)
- Kyoungjune Pak
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital and School of Medicine, Pusan National University, 179 Gudeok-ro, Seo-gu, Busan, 49241, Republic of Korea.
| | - Heeyoung Kim
- Department of Nuclear Medicine, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Republic of Korea
| | - Ju Won Seok
- Department of Nuclear Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Myung Jun Lee
- Department of Neurology and Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.
| | - Seunghyeon Shin
- Department of Nuclear Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Republic of Korea
| | - Keunyoung Kim
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital and School of Medicine, Pusan National University, 179 Gudeok-ro, Seo-gu, Busan, 49241, Republic of Korea
| | - Jae Meen Lee
- Department of Neurosurgery and Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Youngduk Seo
- Department of Nuclear Medicine, Busan Seongso Hospital, Busan, Republic of Korea
| | - Bum Soo Kim
- Department of Nuclear Medicine, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Republic of Korea
| | - Sungmin Jun
- Department of Nuclear Medicine, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Republic of Korea
| | - In Joo Kim
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital and School of Medicine, Pusan National University, 179 Gudeok-ro, Seo-gu, Busan, 49241, Republic of Korea
| |
Collapse
|
8
|
Seo Y, Lee WW, Kang G, Shong MH, Joung KH, Kim SM, Jun S. Thyroid segmentation using perithyroidal halo layer on 99mTc-pertechnetate thyroid SPECT/CT: An easy and reliable method for accurate quantification of thyroid activity. Hell J Nucl Med 2023; 26:84-93. [PMID: 37527043 DOI: 10.1967/s002449912570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/28/2023] [Indexed: 08/03/2023]
Abstract
OBJECTIVE In previous fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) studies, tumor segmentation using peritumoral halo layer (PHL; SegPHL) was shown to be reliable and accurate segmentation method in various malignant tumors. We found that the halo layer also was observed on the 99mTc-pertechnetate (99mTcO4) thyroid single photon emission computed tomography (SPECT)/CT. In the present study, we attempted to apply thyroid segmentation using the perithyroidal halo layer (PTHL; SegPTHL) on 99mTcO4 thyroid SPECT/CT and compared SegPTHL with CT-based thyroid segmentation (SegCT). SUBJECTS AND METHODS A total of 33 patients (19 females, 14 males; mean age, 46.91±15.7 years old) were enrolled in this study. For SegCT, three-dimensional volume of interest (VOI) of the thyroid was generated via multiple 2-dimensional regions of interest (ROI) along the thyroid margin on transaxial CT images that were manually drawn slice by slice. The PTHL was easily identified by an abrupt increase in layer thickness with minimal or mild distortion of the main thyroid contour, and the thyroid margin for SegPTHL was determined at the innermost portion of PTHL. An automated VOI generation for SegPTHL was performed using the Q. Volumetrix software. The correlation and reliability tests were performed between the quantification parameters of SegPTHL and SegCT. RESULTS The PTHL threshold adjusted according to maximal SUV of thyroid were similar to the results of previous SegPHLstudies of 18F-FDG PET/CT. A good correlation was observed between the thyroid volumes of SegCT and SegPTHL (r=0.725; P<0.0001), although the thyroid volume of SegPTHL was slightly larger than that of SegCT (P=0.0017). The % thyroid uptake (TcTU), total lesion activity (TLA), and mean standardized uptake value (SUVmean) of SegPTHL correlated well with those of SegCT (r=0.9877, 0.9883, 0.9875, respectively; P<0.0001). No significant error was observed between the parameters (i.e., TcTU, TLA, and SUVmean) of SegPTHL and SegCT. CONCLUSION Thyroid segmentation PTHL may be a useful method for reliable quantification of thyroid uptake, because the SPECT/CT parameters of SegPTHL were strongly correlated with those of SegCT, as well as the process of SegPTHL is easier and faster than that of SegCT.
Collapse
Affiliation(s)
- Youngduk Seo
- Department of Nuclear Medicine, Chungnam National University Sejong Hospital, Sejong, Republic of Korea. ,
| | | | | | | | | | | | | |
Collapse
|
9
|
Piao S, Lee I, Kim S, Park H, Nagar H, Choi SJ, Vu GH, Kim M, Lee EO, Jeon BH, Kim DW, Seo Y, Kim CS. CRIF1 siRNA-Encapsulated PLGA Nanoparticles Suppress Tumor Growth in MCF-7 Human Breast Cancer Cells. Int J Mol Sci 2023; 24:ijms24087453. [PMID: 37108616 PMCID: PMC10138627 DOI: 10.3390/ijms24087453] [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: 03/22/2023] [Revised: 04/11/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Mitochondrial oxidative phosphorylation (OXPHOS) system dysfunction in cancer cells has been exploited as a target for anti-cancer therapeutic intervention. The downregulation of CR6-interacting factor 1 (CRIF1), an essential mito-ribosomal factor, can impair mitochondrial function in various cell types. In this study, we investigated whether CRIF1 deficiency induced by siRNA and siRNA nanoparticles could suppress MCF-7 breast cancer growth and tumor development, respectively. Our results showed that CRIF1 silencing decreased the assembly of mitochondrial OXPHOS complexes I and II, which induced mitochondrial dysfunction, mitochondrial reactive oxygen species (ROS) production, mitochondrial membrane potential depolarization, and excessive mitochondrial fission. CRIF1 inhibition reduced p53-induced glycolysis and apoptosis regulator (TIGAR) expression, as well as NADPH synthesis, leading to additional increases in ROS production. The downregulation of CRIF1 suppressed cell proliferation and inhibited cell migration through the induction of G0/G1 phase cell cycle arrest in MCF-7 breast cancer cells. Similarly, the intratumoral injection of CRIF1 siRNA-encapsulated PLGA nanoparticles inhibited tumor growth, downregulated the assembly of mitochondrial OXPHOS complexes I and II, and induced the expression of cell cycle protein markers (p53, p21, and p16) in MCF-7 xenograft mice. Thus, the inhibition of mitochondrial OXPHOS protein synthesis through CRIF1 deletion destroyed mitochondrial function, leading to elevated ROS levels and inducing antitumor effects in MCF-7 cells.
Collapse
Affiliation(s)
- Shuyu Piao
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Ikjun Lee
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Seonhee Kim
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Hyewon Park
- Department of Anatomy and Cell Biology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Harsha Nagar
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Su-Jeong Choi
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Giang-Huong Vu
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Minsoo Kim
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Eun-Ok Lee
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Byeong-Hwa Jeon
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Dong Woon Kim
- Department of Anatomy and Cell Biology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Youngduk Seo
- Department of Nuclear Medicine, Chungnam National University Sejong Hospital, Sejong 30099, Republic of Korea
| | - Cuk-Seong Kim
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| |
Collapse
|
10
|
Kim EY, Kim SY, Seo Y, Shin C. Nearly Abolished Dopamine Transporter Uptake in a Patient With a Novel FBXO7 Mutation. J Mov Disord 2022; 15:269-272. [PMID: 35880381 PMCID: PMC9536907 DOI: 10.14802/jmd.22006] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 04/26/2022] [Indexed: 12/11/2022] Open
Abstract
Mutations in the F-box only protein 7 (FBXO7) gene are the cause of autosomal recessive parkinsonian-pyramidal syndrome. Herein, we report a patient with a novel FBXO7 mutation with a unique clinical presentation. A 43-year-old male visited our hospital with complaints of progressing gait disturbance since a generalized tonic clonic seizure. There were no past neurological symptoms or familial disorders. Neurological examination revealed bradykinesia, masked face, stooped posture, parkinsonian gait, and postural instability. The bilateral uptake by dopamine transporters was nearly abolished, as determined by N-(3-[18F]fluoropropyl)-2β-carbon ethoxy-3β-(4-iodophenyl) nortropane positron emission tomography (18F-FP-CIT PET). Next-generation sequencing revealed a heterozygous c.1066_1069delTCTG (p.Ser356ArgfsTer56) frameshift variant and a heterozygous c.80G>A (p.Arg27His) missense variant of the FBXO7 gene. The patient’s specific clinical features, medication-refractory parkinsonism and seizures further broaden the spectrum of FBXO7 mutations. The nearly abolished dopamine transporter uptake identified by 18F-FP-CIT PET is frequently found in patients with FBXO7 mutations, which is different from the usual rostrocaudal gradient that is observed in patients with Parkinson’s disease.
Collapse
Affiliation(s)
- Eun Young Kim
- Department of Neurology and Chungnam National University Sejong Hospital, Sejong, Korea
| | - Seon Young Kim
- Department of Laboratory Medicine, Chungnam National University Hospital, Chungnam National University, Daejeon, Korea
| | - Youngduk Seo
- Department of Nuclear Medicine, Chungnam National University Sejong Hospital, Sejong, Korea
| | - Chaewon Shin
- Department of Neurology and Chungnam National University Sejong Hospital, Sejong, Korea.,Department of Neurology, Chungnam National University College of Medicine, Daejeon, Korea
| |
Collapse
|
11
|
Choi Y, Park E, Kim S, Ha J, Oh H, Kim Y, Lee Y, Seo Y, Kang J, Lee S, Lee H, Yoon Y, Choi KH. Fermented milk with Lactobacillus curvatus SMFM2016-NK alleviates periodontal and gut inflammation, and alters oral and gut microbiota. J Dairy Sci 2021; 104:5197-5207. [PMID: 33685682 DOI: 10.3168/jds.2020-19625] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 01/09/2021] [Indexed: 11/19/2022]
Abstract
This study aimed to analyze the effect of milk fermented with Lactobacillus curvatus SMFM2016-NK on periodontal diseases and gut health in a rat model. To improve the effect of Lb. curvatus SMFM2016-NK-fermented milk administration for relieving periodontitis, the periodontitis rat models were treated with the following for 4 wk: 10% skim milk (normal), periodontitis + 10% skim milk (negative control), periodontitis + Lactobacillus rhamnosus GG-fermented milk (positive control), and periodontitis + Lb. curvatus SMFM2016-NK-fermented milk (PD+LCFM). Transcriptional analysis of inflammatory cytokines [tumor necrosis factor α (TNF-α), IL-1β, IL-6, and IL-10] was performed via quantitative reverse-transcription PCR. The changes in the oral and gut microbiomes after administering Lb. curvatus SMFM2016-NK-fermented milk were analyzed with metagenomics sequencing using DNA extracted from the oral gingival tissues and feces from the cecum of the rat models. After treatment with Lb. curvatus SMFM2016-NK-fermented milk, the relative gene expression levels of TNFA and IL1B in the gingiva decreased in the PD+LCFM group compared with those in the negative control group. In the oral microbiome, the proportion of the phylum Proteobacteria in the PD+LCFM group was lower than that in the negative control after treatment with Lb. curvatus SMFM2016-NK-fermented milk. For the effect in the gut, the relative gene expression levels of inflammatory cytokines in the colon between the normal and negative control groups were not different; however, the expression levels of TNFA and IL1B in the PD+LCFM and positive control groups, respectively, were lower than those in the negative control group. The composition and diversity of the gut microbiome differed among normal, periodontitis, and Lb. curvatus SMFM2016-NK-fermented milk treatment groups. These results indicate that Lb. curvatus SMFM2016-NK-fermented milk could alleviate periodontal and gut inflammation and change oral and gut microbiota.
Collapse
Affiliation(s)
- Y Choi
- Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - E Park
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea
| | - S Kim
- Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - J Ha
- Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - H Oh
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea
| | - Y Kim
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea
| | - Y Lee
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea
| | - Y Seo
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea
| | - J Kang
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea
| | - S Lee
- Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - H Lee
- Food Standard Research Center, Korea Food Research Institute, Jeollabuk-do 55365, Korea
| | - Y Yoon
- Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea; Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea.
| | - K-H Choi
- Department of Oral Microbiology, College of Dentistry, Wonkwang University, Iksan 54538, Korea.
| |
Collapse
|
12
|
Kim DK, Lim HS, Eun KM, Seo Y, Kim JK, Kim YS, Kim MK, Jin S, Han SC, Kim DW. Subepithelial neutrophil infiltration as a predictor of the surgical outcome of chronic rhinosinusitis with nasal polyps. Rhinology 2021; 59:173-180. [PMID: 33129200 DOI: 10.4193/rhin20.373] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Neutrophils present as major inflammatory cells in refractory chronic rhinosinusitis with nasal polyps (CRSwNP), regardless of the endotype. However, their role in the pathophysiology of CRSwNP remains poorly understood. We investigated factors predicting the surgical outcomes of CRSwNP patients with focus on neutrophilic localization. METHODS We employed machine-learning methods such as the decision tree and random forest models to predict the surgical outcomes of CRSwNP. Immunofluorescence analysis was conducted to detect human neutrophil elastase (HNE), Bcl-2, and Ki-67 in NP tissues. We counted the immunofluorescence-positive cells and divided them into three groups based on the infiltrated area, namely, epithelial, subepithelial, and perivascular groups. RESULTS On machine learning, the decision tree algorithm demonstrated that the number of subepithelial HNE-positive cells, Lund-Mackay (LM) scores, and endotype (eosinophilic or non-eosinophilic) were the most important predictors of surgical outcomes in CRSwNP patients. Additionally, the random forest algorithm showed that, after ranking the mean decrease in the Gini index or the accuracy of each factor, the top three ranking factors associated with surgical outcomes were the LM score, age, and number of subepithelial HNE-positive cells. In terms of cellular proliferation, immunofluorescence analysis revealed that Ki-67/HNE-double positive and Bcl-2/HNE-double positive cells were significantly increased in the subepithelial area in refractory CRSwNP. CONCLUSION Our machine-learning approach and immunofluorescence analysis demonstrated that subepithelial neutrophils in NP tissues had a high expression of Ki-67 and could serve as a cellular biomarker for predicting surgical outcomes in CRSwNP patients.
Collapse
Affiliation(s)
- D-K Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Chuncheon Sacred Heart Hospital and Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Republic of Korea; Division of Big Data and Artificial Intelligence, Hallym University College of Medicine, Chuncheon, Republic of Korea
| | - H-S Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - K M Eun
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Y Seo
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - J K Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Y S Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - M-K Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S Jin
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S C Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - D W Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| |
Collapse
|
13
|
Kim M, Jeong M, Hur S, Cho Y, Park J, Jung H, Seo Y, Woo HA, Nam KT, Lee K, Lee H. Engineered ionizable lipid nanoparticles for targeted delivery of RNA therapeutics into different types of cells in the liver. Sci Adv 2021; 7:7/9/eabf4398. [PMID: 33637537 PMCID: PMC7909888 DOI: 10.1126/sciadv.abf4398] [Citation(s) in RCA: 124] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 01/11/2021] [Indexed: 05/08/2023]
Abstract
Ionizable lipid nanoparticles (LNPs) have been widely used for in vivo delivery of RNA therapeutics into the liver. However, a main challenge remains to develop LNP formulations for selective delivery of RNA into certain types of liver cells, such as hepatocytes and liver sinusoidal endothelial cells (LSECs). Here, we report the engineered LNPs for the targeted delivery of RNA into hepatocytes and LSECs. The effects of particle size and polyethylene glycol-lipid content in the LNPs were evaluated for the hepatocyte-specific delivery of mRNA by ApoE-mediated cellular uptake through low-density lipoprotein receptors. Targeted delivery of RNA to LSECs was further investigated using active ligands. Incorporation of mannose allowed the selective delivery of RNA to LSECs, while minimizing the unwanted cellular uptake by hepatocytes. These results demonstrate that engineered LNPs have great potential for the cell type-specific delivery of RNA into the liver and other tissues.
Collapse
Affiliation(s)
- M Kim
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, South Korea
| | - M Jeong
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, South Korea
| | - S Hur
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, South Korea
| | - Y Cho
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, South Korea
| | - J Park
- Fluorescence Core Imaging Center, Ewha Womans University, Seoul 120-750, South Korea
| | - H Jung
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, South Korea
| | - Y Seo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, South Korea
| | - H A Woo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, South Korea
| | - K T Nam
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, South Korea
| | - K Lee
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, South Korea
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, South Korea
| | - H Lee
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, South Korea.
| |
Collapse
|
14
|
Nakayama T, Oshima Y, Kusumoto S, Osaga S, Yamamoto J, Wakami K, Goto T, Sugiura T, Seo Y, Iida S, Ohte N. Clinical features, risk factors, and prognosis of anthracycline-induced cardiotoxicity in patients with malignant lymphoma who received a CHOP like regimen. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2039] [Citation(s) in RCA: 2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Anthracycline-induced cardiotoxicity is a serious complication in patients with malignant lymphoma (ML) who received chemotherapy, which threatens life prognosis and quality of life of patients. However, incidence and risk factors of cardiotoxicity in patients with ML who undergo intensive chemotherapy which aims complete remission is not clarified. Furthermore, prognosis after cardiotoxicity and that after recovery from cardiotoxicity have not been elucidated.
Method
We screened 443 ML patients who received either rituximab (R)-CHOP or CHOP regimen between January 2008 and December 2017 at Nagoya City University Hospital. Two handled forty-four patients who underwent echocardiography before and after chemotherapy were enrolled and data were analyzed retrospectively. Cardiotoxicity was defined as a decline in left ventricular ejection fraction (LVEF) of 10% or greater and an LVEF was below 50%. Partial recovery was defined as a 5% or more of increase in LVEF and an LVEF was ≥50% after cardiotoxicity. Complete recovery was defined as an increase in LVEF became more than 95% of the baseline value. Patient's basic characteristics, chemotherapeutic regimen, laboratory data, echocardiographic data, and prognosis were collected from the medical records by two cardiologists and two hematologists.
Result
At baseline, the median age was 71 years, the median cumulative dose of doxorubicin was 302 mg/m2 and the median LVEF was 69%. During the follow-up period, cardiotoxicity was observed in 52 out of 244 patients (21%), 30 patients (12%) had a symptomatic heart failure, and 5 patients died from cardiovascular cause. Thirty-five patients developed cardiotoxicity during the first year of chemotherapy. Multivariate analysis identified that only the baseline LVEF (HR 0.949, 95% CI 0.919–0.981, p=0.002) was an independent risk factor for cardiotoxicity. In our study, patients who received more than 200 mg/m2 of doxorubicin developed cardiotoxicity frequently. Among 52 patients who experienced cardiotoxicity, partial recovery and full recovery were observed in 18 (35%) and 4 (8%) patients, respectively. Four patients without recovery died due to heart failure and 1 patient with partial recovery died suddenly. Six out of 18 patients with partial recovery developed re-cardiotoxicity.
Conclusion
ML patients who undergo more than 200 mg/m2 of doxorubicin need a watchful follow-up. Only a baseline LVEF was an independent risk factor for cardiotoxicity. one third of patients with partial recovery developed re-cardiotoxicity.
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- T Nakayama
- Nagoya City University, Department of Cardiology, Nagoya, Japan
| | - Y Oshima
- Nagoya City University, Department of Hematology and Oncology, Nagoya, Japan
| | - S Kusumoto
- Nagoya City University, Department of Hematology and Oncology, Nagoya, Japan
| | - S Osaga
- Nagoya City University, Clinical Research Management Center, Nagoya, Japan
| | - J Yamamoto
- Nagoya City University, Department of Cardiology, Nagoya, Japan
| | - K Wakami
- Nagoya City University, Department of Cardiology, Nagoya, Japan
| | - T Goto
- Nagoya City University, Department of Cardiology, Nagoya, Japan
| | - T Sugiura
- Nagoya City University, Department of Cardiology, Nagoya, Japan
| | - Y Seo
- Nagoya City University, Department of Cardiology, Nagoya, Japan
| | - S Iida
- Nagoya City University, Department of Hematology and Oncology, Nagoya, Japan
| | - N Ohte
- Nagoya City University, Department of Cardiology, Nagoya, Japan
| |
Collapse
|
15
|
Ishii K, Yoshikawa Y, Hyodo E, Seo Y, Ishizu T, Kihara H, Daimon M, Tanaka A, Watanabe H, Akasaka T, Ito H, Yoshikawa J. Diagnostic accuracy of left ventricular diastolic transverse strain imaging by speckle tracking echocardiography for diagnosing chest pain in diabetic patients. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1386] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Two-dimensional speckle tracking echocardiography (2D-STE) has been reported to be useful for the diagnosis of myocardial ischemia by detecting delayed relaxation (diastolic stunning) after an episode of angina. 2D-longitudinal strain is not specific besides ischemia such as diastolic dysfunction, and diabetes have been associated with abnormal longitudinal fibers. The aim is to evaluate the diagnostic accuracy of Left ventricular (LV) diastolic transverse strain imaging by STE to detect the presence of acute coronary syndrome (ACS) in diabetic patients with acute chest pain.
Methods
385 consecutive patients with acute chest pain and without wall motion abnormality, who were admitted to an emergency department (ED) at 1 of 12 clinical sites in Japan, were enrolled and underwent 2D-STE at ED. Left ventricular (LV) transverse strain values at aortic valve closure (A) and one-third of diastole duration (B) were measured. The strain imaging diastolic index (SI-DI) was value was determined as: (A − B)/A × 100% to assess the LV diastolic strain imaging and was used to identify the regional LV delayed relaxation. All patients underwent coronary CT or coronary angiography to establish the diagnosis of ACS. Clinicians were blinded to the 2D-STE results.
Results
Out of 385 patients, 2D-STE analysis was possible in 365 patients (94%). 76 patients were diabetic (DM+), and 289 patients were non-diabetic (DM-). With assessment of coronary CT or coronary angiography, ACS was diagnosed in 125 patients (34%). 2D-STE was obtained at a mean of 5.3 hours after chest pain episode. Transverse SI-DI of ischemic segments were significantly lower than those of non-ischemic segments (p value <0.001) in both diabetic and non-diabetic patients, and transverse SI-DI of both diabetic and non-diabetic patients demonstrated high area under curve (AUC) for detection of myocardial ischemia (Figure: RCA; right coronary artery, LAD; left anterior descending artery, LCX; left circumferencial artery). In diabetic patients, sensitivity, specificity, and negative predictive value for ACS of transverse SI-DI are 100%, 95%, 100% in RCA (a cut-off value of 36.2), and 86.4%, 95%, 93% in LAD (a cut-off value of 50.2), and 75%, 85%, 94% in LCX (a cut-off value of 52), respectively.
Conclusion
LV diastolic transverse strain imaging by 2D-STE at ED increase the sensitivity, specificity and accuracy to predict the presence of ACS in diabetic patients with chest pain, as well as non-diabetic patients. (UMIN000013859).
Figure 1. Transverse Strain (SI-DI): AUC (95% CI)
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- K Ishii
- Kansai Electric Power Hospital, Cardiology, Osaka, Japan
| | - Y Yoshikawa
- Kyoto University Graduate School of Medicine, Cardiology, Kyoto, Japan
| | - E Hyodo
- Nishinomiya Watanabe Cardiovascular Center, Cardiology, Nishinomiya, Japan
| | - Y Seo
- Tsukuba University Hospital, Cardiology, Tsukuba, Japan
| | - T Ishizu
- Tsukuba University Hospital, Cardiology, Tsukuba, Japan
| | - H Kihara
- Kihara Cardiovascular Clinic, Cardiology, Asahikawa, Japan
| | - M Daimon
- University of Tokyo Hospital, Cardiology, Tokyo, Japan
| | - A Tanaka
- Wakayama Medical University, Cardiology, Wakayama, Japan
| | - H Watanabe
- Tokyo Bay Urayasu/Ichikawa Medical Center, Cardiology, Urayasu, Japan
| | - T Akasaka
- Wakayama Medical University, Cardiology, Wakayama, Japan
| | - H Ito
- Okayama University Hospital, Cardiology, Okayama, Japan
| | - J Yoshikawa
- Nishinomiya Watanabe Cardiovascular Center, Cardiology, Nishinomiya, Japan
| |
Collapse
|
16
|
Murai S, Sugiura T, Dohi Y, Takase H, Mizoguchi T, Yamashita S, Seo Y, Fujii S, Ohte N. Arterial stiffness could reflect increased cardiac load and reduced pulmonary function in the general population. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2371] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Pulmonary function is known to decrease with age and reduced pulmonary function has been reported to be associated with all-cause mortality and cardiovascular death. The association between pulmonary impairment and atherosclerosis was reported previously but has not been investigated sufficiently in the general population.
Purpose
We hypothesized that arterial stiffness could reflect increase of cardiac load and reduced pulmonary function. The present study aimed to investigate whether increased cardiac load and reduced pulmonary function could affect arterial stiffness in the general population.
Methods
Subjects undergoing their health check-up were enrolled. Plasma B-type natriuretic peptide (BNP) levels and serum high-sensitivity cardiac troponin I (hs-cTnI) levels were measured to evaluate cardiac load and myocardial damage. Radial augmentation index (rAI) was measured to investigate arterial stiffness using HEM-9000AI device. Subjects with an ST-T segment abnormality on the electrocardiogram, renal insufficiency, cancer, active inflammatory disease, or a history of cardiovascular events and pulmonary disease were excluded. Pulmonary function was assessed using spirometry by calculating forced vital capacity (FVC) as a percentage of predicted value (FVC%-predicted), forced expiratory volume in 1 second (FEV1) as a percentage of predicted value (FEV1%-predicted), and the ratio of FEV1 to FVC (FEV1/FVC).
Results
A total of 1100 subjects aged 57 years were enrolled and their median values of BNP and hs-cTnI were 15.5 and 2.3 pg/ml. The levels of rAI were significantly associated with the levels of BNP after adjustment for possible confounders in multivariate regression analysis, but were not with the levels of hs-TnI. While the parameters of pulmonary function were inversely associated with the levels of rAI and hs-cTnI after adjustment for possible confounders in the multivariate regression analysis, but not with the levels of BNP. The other multivariate regression analyses where BNP, hs-cTnI, parameters of pulmonary function, and the other possible factors were simultaneously included as independent variables revealed that the BNP levels and the FVC%-predicted or FEV1%-predicted, besides age, gender, smoking status, body mass index, blood pressure, heart rate, creatinine, fasting plasma glucose, and triglyceride, were significantly associated with the levels of rAI.
Conclusions
The significant associations of rAI with BNP and pulmonary function were revealed in the general population. These findings support that arterial stiffness could reflect increased cardiac load and reduced pulmonary function, in apparently healthy individuals.
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- S Murai
- Nagoya City University Graduate School of Medical Scinece, Nagoya, Japan
| | - T Sugiura
- Nagoya City University Graduate School of Medical Scinece, Nagoya, Japan
| | - Y Dohi
- Nagoya Gakuin University, Department of Internal Medicine, Faculty of Rehabilitation, Seto, Japan
| | - H Takase
- Enshu Hospital, Department of Internal Medicine, Hamamatsu, Japan
| | - T Mizoguchi
- Nagoya City University Graduate School of Medical Scinece, Nagoya, Japan
| | - S Yamashita
- Nagoya City University Graduate School of Medical Scinece, Nagoya, Japan
| | - Y Seo
- Nagoya City University Graduate School of Medical Scinece, Nagoya, Japan
| | - S Fujii
- Asahikawa Medical University, Department of Laboratory Medicine, Asahikawa, Japan
| | - N Ohte
- Nagoya City University Graduate School of Medical Scinece, Nagoya, Japan
| |
Collapse
|
17
|
Seo Y, Kempton A, Rogers O, Baine S, Lewis S, Adegboye K, Haile A, Griffin D, Peterson E, Pozsgai E, Rodino-Klapac L. LIMB GIRDLE MUSCULAR DYSTROPHIES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.141] [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]
|
18
|
Pozsgai E, Griffin D, Peterson E, Kempton A, Rogers O, Seo Y, Rodino-Klapac L. LIMB GIRDLE MUSCULAR DYSTROPHIES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.140] [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]
|
19
|
Pozsgai E, Peterson E, Kempton A, Rogers O, Seo Y, Rodino-Klapac L. LIMB GIRDLE MUSCULAR DYSTROPHIES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.142] [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]
|
20
|
Planchard D, Shin D, Choi J, Seo Y, Jung J, Park M, Reck M. 1377P Exploratory analyses of efficacy from a phase III study comparing SB8, a proposed bevacizumab biosimilar, and reference bevacizumab in patients with metastatic or recurrent non-squamous NSCLC. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1691] [Citation(s) in RCA: 1] [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] Open
|
21
|
Kikuchi S, Kitada S, Wakami K, Goto T, Sugiura T, Seo Y, Ohte N. P743 Right ventricular function is important for exercise capacity in patients at risk of heart failure. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.410] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background and Purpose
It is important to evaluate exercise capacity to detect the development of heart failure (HF) in patients with heart disease. The pathology of exercise capacity is multi-factorial, and cardiac function is recognized as one of the most important determinants. However, the correlation between right ventricular (RV) function and exercise capacity is not fully understood in the subjects without HF. Therefore, we assessed the relationship between RV function and exercise capacity, both in patients with HF (HF+) and in patients with heart disease but not developed HF (HF-).
Methods
Two hundred and fifty-two patients with heart disease who underwent both Doppler echocardiography at rest and cardio-pulmonary exercise testing (CPET) for the assessment of heart function were enrolled (HF+: n = 142, HF-: n = 110). We measured left ventricular ejection fraction (LVEF), peak early diastolic transmitral flow velocity (E), peak late diastolic transmitral flow velocity (A), early diastolic mitral annular velocity (e’), left atrial volume (LAV), and tricuspid annular plane systolic excursion (TAPSE) by echocardiography. After echocardiographic examination, symptom-limited exercise testing was performed with simultaneous respiratory gas analysis, and peak oxygen consumption (pVO2) was determined. Blood examination including hemoglobin (Hb) and brain natriuretic peptide (BNP) was done on the same day.
Results
There were significant relationships between pVO2 and LVEF (r = 0.16, p = 0.005), e" (r = 0.51, p < 0.0001), E/e" (r=-0.47, p < 0.0001), LAV (r=-0.21, p = 0.0002), and TAPSE (r = 0.33, p < 0.0001) in the whole subjects. In the multiple regression analyses, age, Hb, E/e" and TAPSE were selected as significant determinants for pVO2 both in HF+ (R²=0.39, p < 0.0001) and HF- (R²=0.33, p < 0.0001).
Conclusion
RV function is the prime determinant of exercise capacity in patients at risk of HF, as well as in patients with HF.
Abstract P743 Figure.
Collapse
Affiliation(s)
- S Kikuchi
- Nagoya City University Graduate School of Medical Sciences, Department of Cardio-Renal Medicine and Hypertension, Nagoya, Japan
| | - S Kitada
- Nagoya City University Graduate School of Medical Sciences, Department of Cardio-Renal Medicine and Hypertension, Nagoya, Japan
| | - K Wakami
- Nagoya City University Graduate School of Medical Sciences, Department of Cardio-Renal Medicine and Hypertension, Nagoya, Japan
| | - T Goto
- Nagoya City University Graduate School of Medical Sciences, Department of Cardio-Renal Medicine and Hypertension, Nagoya, Japan
| | - T Sugiura
- Nagoya City University Graduate School of Medical Sciences, Department of Cardio-Renal Medicine and Hypertension, Nagoya, Japan
| | - Y Seo
- Nagoya City University Graduate School of Medical Sciences, Department of Cardio-Renal Medicine and Hypertension, Nagoya, Japan
| | - N Ohte
- Nagoya City University Graduate School of Medical Sciences, Department of Cardio-Renal Medicine and Hypertension, Nagoya, Japan
| |
Collapse
|
22
|
Ishii K, Hyodo E, Seo Y, Ishizu T, Tada E, Kihara H, Daimon M, Tanaka A, Akasaka T, Watanabe H, Ito H, Yoshikawa J. 1225 Diagnostic accuracy of left ventricular diastolic strain imaging by speckle tracking echocardiography in detecting ischemic etiology of acute chest pain. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.687] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
none
OnBehalf
A TRAC-SI Multicenter Trial
Background
Two-dimensional speckle tracking echocardiography (2D-STE) has been reported to be useful for the diagnosis of myocardial ischemia by detecting delay in regional myocardial expansion (diastolic stunning) up to many hours after an episode of angina. The aim is to evaluate the diagnostic accuracy of Left ventricular (LV) diastolic longitudinal, circumferential, transverse and radial strain imaging by STE to detect the presence of acute coronary syndrome (ACS) in patients with acute chest pain.
Methods
388 consecutive patients with acute chest pain and without wall motion abnormality, who were admitted to an emergency department (ED) at 1 of 12 clinical sites in Japan, were enrolled and underwent 2D-STE at ED. Left ventricular (LV) longitudinal, circumferential, transverse and radial strain values at aortic valve closure (A) and one-third of diastole duration (B) were measured. The strain imaging diastolic index (SI-DI) was value was determined as: (A-B)/A × 100% to assess the LV diastolic strain imaging and was used to identify the regional LV delayed relaxation. All patients underwent coronary CT or coronary angiography to establish the diagnosis of ACS. Clinicians were blinded to the 2D-STE results.
Results
Out of 388 patients, 2D-STE analysis was possible in 358 patients (92%). With assessment of coronary CT or coronary angiography, ACS was diagnosed in 118 patients (33%). 2D-STE was obtained at a mean of 5.3 hours after chest pain episode. SI-DI of longitudinal, circumferential, transverse and radial strain of ischemic segments were significantly lower than those of non-ischemic segments (p value < 0.001), and transverse and radial SI-DI demonstrated high diagnostic accuracy, compared with longitudinal SI-DI (Figure 1). Sensitivity, specificity, and negative predictive value for ACS of transverse SI-DI are 87%, 88%, % and 95%, respectively, using a cut-off value of 63.3.
Conclusion
LV diastolic strain imaging by 2D-STE at ED increase the sensitivity, specificity and accuracy to predict the presence of ACS in patients with chest pain. Compared with longitudinal diastolic strain imaging, transverse diastolic strain imaging is more sensitive marker to detect the myocardial ischemic episode (UMIN000013859).
Abstract 1225 Figure 1
Collapse
Affiliation(s)
- K Ishii
- Kansai Electric Power Hospital, Cardiology, Osaka, Japan
| | - E Hyodo
- Nishinomiya Watanabe Cardiovascular Center, Cardiology, Nishinomiya, Japan
| | - Y Seo
- Tsukuba University Hospital, Cardiology, Tsukuba, Japan
| | - T Ishizu
- Tsukuba University Hospital, Cardiology, Tsukuba, Japan
| | - E Tada
- Kansai Electric Power Medical Reseach Institute, Cardiology, Osaka, Japan
| | - H Kihara
- Kihara Cardiovascular Clinic, Cardiology, Asahikawa, Japan
| | - M Daimon
- University of Tokyo, Cardiology, Tokyo, Japan
| | - A Tanaka
- Wakayama Medical University, Cardiology, Wakayama, Japan
| | - T Akasaka
- Wakayama Medical University, Cardiology, Wakayama, Japan
| | - H Watanabe
- Tokyo Bay Urayasu/Ichikawa Medical Center , Cardiology, Urayasu, Japan
| | - H Ito
- Okayama University Hospital, Cardiology, Okayama, Japan
| | - J Yoshikawa
- Nishinomiya Watanabe Cardiovascular Center, Cardiology, Nishinomiya, Japan
| |
Collapse
|
23
|
Seo Y, Rhee CS, Kim H. The distinctive anatomical phenotypes of pap non-adherent osa patients and clinical outcome of alternative treatments after failure of pap therapy. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.541] [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: 11/27/2022]
|
24
|
Pak K, Kim H, Seok JW, Lee MJ, Shin S, Kim K, Lee JM, Seo Y, Kim BS, Jun S, Kim IJ. Prediction of future weight change with dopamine transporter in patients with Parkinson's disease. J Neural Transm (Vienna) 2019; 126:723-729. [PMID: 31102003 DOI: 10.1007/s00702-019-02016-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 03/10/2019] [Accepted: 05/11/2019] [Indexed: 12/15/2022]
Abstract
Fluctuating body weight is a commonly reported nonmotor feature in patients with Parkinson's disease (PD). We hypothesised that striatal dopamine transporter (DAT) density at the time of diagnosis might play an important role in weight regulation in patients with PD. DAT density was measured from 123I-FP-CIT single-photon emission computed tomography. Region-of-interest analyses were performed to measure the specific binding of 123I-FP-CIT to DAT, and the putamen-to-caudate nucleus ratio (PCR) was calculated. Body weight was measured at baseline (W0) and at 48 months (W48). We classified subjects into three groups: weight loss, stable, and weight gain. In final analyses, 163 patients (106 men, 57 women) were included. PCR significantly differed by group in men, but not in women or across all patients. In men, PCR was slightly negatively associated with the percentage change in weight. No such correlation was found across all patients or in women. In univariate and multivariate logistic regression analyses, low PCR was associated with future weight gain in men with PD but not in women. In conclusion, striatal DAT availability at the time of diagnosis could predict subsequent weight change in men with PD.
Collapse
Affiliation(s)
- Kyoungjune Pak
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-gu, Busan, 49241, Republic of Korea.
| | - Heeyoung Kim
- Department of Nuclear Medicine, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Republic of Korea
| | - Ju Won Seok
- Department of Nuclear Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Myung Jun Lee
- Department of Neurology and Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.
| | - Seunghyeon Shin
- Department of Nuclear Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Republic of Korea
| | - Keunyoung Kim
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-gu, Busan, 49241, Republic of Korea
| | - Jae Meen Lee
- Department of Neurosurgery and Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Youngduk Seo
- Department of Nuclear Medicine, Busan Seongso Hospital, Busan, Republic of Korea
| | - Bum Soo Kim
- Department of Nuclear Medicine, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Republic of Korea
| | - Sungmin Jun
- Department of Nuclear Medicine, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Republic of Korea
| | - In Joo Kim
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-gu, Busan, 49241, Republic of Korea
| |
Collapse
|
25
|
Li Z, Tamari K, Seo Y, Minami K, Takahashi Y, Otani K, Suzuki O, Isohashi F, Ogawa K. PO-1082 Dihydroouabain is a novel radiosensitizer identified by high throughput screening. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31502-6] [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]
|
26
|
Tamari K, Li Z, Otani K, Takahashi Y, Minami K, Seo Y, Suzuki O, Isohashi F, Ogawa K. EP-2166 Ro90-7501 is a novel radiosensitizer which inhibits ATM phosphorylation and DNA repair. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32586-1] [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: 11/26/2022]
|
27
|
Lee SW, Kim SJ, Seo Y, Jeong SY, Ahn BC, Lee J. F-18 FDG PET for assessment of disease activity of large vessel vasculitis: A systematic review and meta-analysis. J Nucl Cardiol 2019; 26:59-67. [PMID: 30120746 DOI: 10.1007/s12350-018-1406-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 08/03/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND The aim of this study is to investigate the performance of F-18 fluorodeoxyglucose positron emission tomography (F-18 FDG PET) or positron emission tomography/computed tomography (PET/CT) for the assessment of disease activity in patients with large vessel vasculitis (LVV) through a meta-analysis. METHODS The MEDLINE via PubMed and EMBASE were searched for the studies evaluating the performance of F-18 FDG PET or PET/CT in the assessment of disease activity in patients with LVV. Pooled sensitivity, specificity, diagnostic odds ratios (DORs), and summary receiver-operating characteristic (sROC) curve were estimated across the included studies. Possible publication bias was assessed by Deek's funnel plot asymmetry tests. RESULTS A total of 439 PET images from 298 patients pooled from nine studies showed that the pooled sensitivity was 0.88 [95% confidence interval (CI) 0.79-0.93] without heterogeneity (χ2 = 14.42, P = .07) and the pooled specificity was 0.81 (95% CI 0.64-0.91) with heterogeneity (χ2 = 63.72, P = .00) for the detection of active LVV. The pooled DOR was 30 (95% CI 8-107). Hierarchical sROC curve indicates that the area under the curve was 0.91 (95% CI 0.89-0.94). There was no significant publication bias (P = .42), and meta-regression analysis revealed that none of the variables was the source of the study heterogeneity. CONCLUSIONS F-18 FDG PET has a good performance for the detection of active disease status in patients with LVV. Revised criteria for the assessment of disease activity incorporated with F-18 FDG PET or PET/CT should be introduced and validated. Further studies are warranted to determine if PET-based treatment of LVV can improve outcomes.
Collapse
Affiliation(s)
- Sang-Woo Lee
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Taegu, South Korea
| | - Seong-Jang Kim
- Department of Nuclear Medicine, Pusan National University Yangsan Hospital, Yangsan, 50612, South Korea.
- BioMedical Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, 50612, South Korea.
| | - Youngduk Seo
- Department of Nuclear Medicine, Busan Seongso Hospital, Pusan, South Korea
| | - Shin Young Jeong
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Taegu, South Korea
| | - Byeong-Cheol Ahn
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Taegu, South Korea
| | - Jaetae Lee
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Taegu, South Korea
| |
Collapse
|
28
|
Jeung S, Kang SM, Seo Y, Yu H, Baek CH, Kim H, Yang WS, Park SK. A Case Series of Asymptomatic Hemodialysis Catheter-Related Right Atrial Thrombi That Are Incidentally Detected Prior to Kidney Transplantation. Transplant Proc 2018; 50:3172-3180. [PMID: 30503665 DOI: 10.1016/j.transproceed.2018.08.026] [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] [Received: 08/08/2018] [Accepted: 08/29/2018] [Indexed: 11/26/2022]
Abstract
A hemodialysis (HD) catheter-related right atrial thrombus (RAT) is rarely encountered prior to kidney transplantation (KT) but necessitates a decision about whether to anticoagulate and/or delay the surgery. There is controversy surrounding the clinical implications of a RAT in this situation. It is sometimes considered fatal but other opinions consider it to be benign, especially when incidentally detected. We reviewed the clinical characteristics, management, and outcomes of a patient series with HD catheter-related RAT detected prior to KT and speculated on its clinical significance. Among 3677 cases of KT performed on 3607 patients between January 1997 and September 2015 in our single tertiary center, 11 cases of HD catheter-related RAT detected on transthoracic echocardiography (TTE) prior to KT were included for analysis. The average maximal diameter of the RAT was 23.2 ± 16.3 (SD in mm) and 9 (81.8%) of these 11 patients had no symptoms associated with the RAT. Four patients (36.3%) had their catheters replaced, 5 patients (45.5%) had their catheters removed, and the catheters were maintained in the remaining 2 patients (18.2%). Six patients (54.5%) were anticoagulated with either heparin or warfarin. However all 11 patients had a successful KT suggesting that a HD catheter-related RAT incidentally detected prior to this surgery may not be as serious as previously considered and should not be a reason for delaying the transplantation.
Collapse
Affiliation(s)
- S Jeung
- Division of Nephrology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-M Kang
- Division of Nephrology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y Seo
- Division of Nephrology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - H Yu
- Division of Nephrology, Department of Internal Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Republic of Korea
| | - C H Baek
- Division of Nephrology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - H Kim
- Division of Nephrology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - W S Yang
- Division of Nephrology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-K Park
- Division of Nephrology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| |
Collapse
|
29
|
Isohashi F, Otani K, Tamari K, Seo Y, Suzuki O, Mabuchi S, Kimura T, Ogawa K. Rectal Dose-Volume Parameters and a Source Strength of Ir-192 are Significant Independent Predictors of Late Rectal Morbidity in Patients with Computed Tomography-Based Image-Guided Brachytherapy for Cervical Cancer. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1708] [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]
|
30
|
Tissenbaum H, Seo Y, Kingsley S, Walker G, Mondoux MA. REGULATION OF GLUCOSE STORAGE EXTENDS LIFESPAN AND PROMOTES HEALTHSPAN. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.279] [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: 11/13/2022] Open
Affiliation(s)
- H Tissenbaum
- Department of Molecular, Cell and Cancer Biology, Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States
| | - Y Seo
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, MA, USA
| | - S Kingsley
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, MA, USA
| | - G Walker
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, MA, USA
| | - M A Mondoux
- Department of Biology, College of the Holy Cross, Worcester, MA, USA
| |
Collapse
|
31
|
Takemoto N, Suzuki M, Seo Y, Ogawa K, Inohara H. Radiotherapy alone for human papillomavirus-related locally advanced oropharyngeal squamous cell carcinoma: A single-arm, phase II study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy287.016] [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] [Indexed: 11/13/2022] Open
|
32
|
Jun S, Park JG, Seo Y. Accurate FDG PET tumor segmentation using the peritumoral halo layer method: a study in patients with esophageal squamous cell carcinoma. Cancer Imaging 2018; 18:35. [PMID: 30257714 PMCID: PMC6158888 DOI: 10.1186/s40644-018-0169-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 09/20/2018] [Indexed: 02/06/2023] Open
Abstract
Background In a previous study, FDG PET tumor segmentation (SegPHL) using the peritumoral halo layer (PHL) was more reliable than fixed threshold methods in patients with thyroid cancer. We performed this study to validate the reliability and accuracy of the PHL method in patients with esophageal squamous cell carcinomas (ESCCs), which can be larger and more heterogeneous than thyroid cancers. Methods A total of 121 ESCC patients (FDG avid = 85 (70.2%); FDG non-avid = 36 (29.8%)) were enrolled in this study. In FDG avid ESCCs, metabolic tumor length (ML) using SegPHL (MLPHL), fixed SUV 2.5 threshold (ML2.5), and fixed 40% of maximum SUV (SUVmax) (ML40%) were measured. Regression and Bland-Altman analyses were performed to evaluate associations between ML, endoscopic tumor length (EL), and pathologic tumor length (PL). A comparison test was performed to evaluate the absolute difference between ML and PL. Correlation with tumor threshold determined by the PHL method (PHL tumor threshold) and SUVmax was evaluated. Results MLPHL, ML2.5, and ML40% correlated well with EL (R2 = 0.6464, 0.5789, 0.3321, respectively; p < 0.001) and PL (R2 = 0.8778, 0.8365, 0.6266, respectively; p < 0.001). However, ML2.5 and ML40% showed significant proportional error with regard to PL; there was no significant error between MLPHL and PL. MLPHL showed the smallest standard deviation on Bland-Altman analyses. The absolute differences between ML and PL were significantly smaller for MLPHL and ML40% than for ML2.5 (p < 0.0001). The PHL tumor threshold showed an inverse correlation with SUVmax (σ = − 0.923, p < 0.0001). Conclusions SegPHL was more accurate than fixed threshold methods in ESCC. The PHL tumor threshold was adjusted according to SUVmax of ESCC.
Collapse
Affiliation(s)
- Sungmin Jun
- Department of Nuclear Medicine, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, 49297, South Korea
| | - Jung Gu Park
- Department of Radiology, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, 49297, South Korea
| | - Youngduk Seo
- Department of Nuclear Medicine, Busan Seongso Hospital, Suyeong-ro, Nam-gu, Busan, 48453, Republic of Korea.
| |
Collapse
|
33
|
Seo Y, Yamamoto M, Machino-Ohtsuka T, Ishizu T. P1588Importance to identify the cause of tricuspid regurgitation by 3-dimensional echocardiography in heart failure patients after cardiac implantable electronic device implantations. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1588] [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: 11/12/2022] Open
Affiliation(s)
- Y Seo
- University of Tsukuba, Ibaraki, Japan
| | | | | | - T Ishizu
- University of Tsukuba, Ibaraki, Japan
| |
Collapse
|
34
|
Machino T, Seo Y, Ishizu T, Yamamoto M, Aonuma K. P4414A Clinical and Echocardiographic Score to Identify Heart Failure with Preserved Ejection Fraction in Patients with Atrial Fibrillation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4414] [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)
- T Machino
- University of Tsukuba, Tsukuba, Japan
| | - Y Seo
- University of Tsukuba, Tsukuba, Japan
| | - T Ishizu
- University of Tsukuba, Tsukuba, Japan
| | | | - K Aonuma
- University of Tsukuba, Tsukuba, Japan
| |
Collapse
|
35
|
Ishii K, Hyodo E, Seo Y, Ishizu T, Tada E, Kihara H, Daimon M, Tanaka A, Akasaka T, Ito H, Watanabe H, Yoshikawa J. P2746Two-dimensional speckle tracking echocardiography for early triage of patients with acute chest pain: a TRAC-SI multicenter trial. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2746] [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: 11/14/2022] Open
Affiliation(s)
- K Ishii
- Kansai Electric Power Hospital, Cardiology, Osaka, Japan
| | - E Hyodo
- Nishinomiya Watanabe Cardiovascular Center, Cardiology, Nishinomiya, Japan
| | - Y Seo
- Tsukuba University Hospital, Cardiology, Tsukuba, Japan
| | - T Ishizu
- Tsukuba University Hospital, Cardiology, Tsukuba, Japan
| | - E Tada
- Kansai Electric Power Medical Reseach Institute, Cardiology, Osaka, Japan
| | - H Kihara
- Kihara Cardiovascular Clinic, Cardiology, Asahikawa, Japan
| | - M Daimon
- University of Tokyo, Cardiology, Tokyo, Japan
| | - A Tanaka
- Wakayama Medical University, Cardiology, Wakayama, Japan
| | - T Akasaka
- Wakayama Medical University, Cardiology, Wakayama, Japan
| | - H Ito
- Okayama University Hospital, Cardiology, Okayama, Japan
| | - H Watanabe
- Tokyo Bay Urayasu/Ichikawa Medical Center, Cardiology, Urayasu, Japan
| | - J Yoshikawa
- Nishinomiya Watanabe Cardiovascular Center, Cardiology, Nishinomiya, Japan
| | | |
Collapse
|
36
|
Bae Y, Kim J, Kim S, Jung J, Yoon S, Seo Y. Relationship between alcohol-related facial flushing and carotid atherosclerosis. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.775] [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: 10/28/2022]
|
37
|
Seo Y, Pak K, Nam HY, Seok JW, Lee MJ, Kim EJ, Lee JM, Kim SJ, Kim IJ. Effect of rs3910105 in the Synuclein Gene on Dopamine Transporter Availability in Healthy Subjects. Yonsei Med J 2018; 59:787-792. [PMID: 29978616 PMCID: PMC6037603 DOI: 10.3349/ymj.2018.59.6.787] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 06/01/2018] [Accepted: 06/15/2018] [Indexed: 12/03/2022] Open
Abstract
PURPOSE The present study investigated associations between dopamine transporter (DAT) availability and α-synuclein levels in cerebrospinal fluid, as well as synuclein gene (SNCA) transcripts, and the effect of single nucleotide polymorphism of SNCA on DAT availability in healthy subjects. MATERIALS AND METHODS The study population comprised healthy controls who underwent ¹²³I-FP-CIT single-photon emission computed tomography screening. Five SNCA probes were used to target the boundaries of exon 3 and exon 4 (SNCA-E3E4), transcripts with a long 3'UTR region (SNCA-3UTR-1, SNCA-3UTR-2), transcripts that skip exon 5 (SNCA-E4E6), and the rare short transcript isoforms that comprise exons 1-4 (SNCA-007). RESULTS In total, 123 healthy subjects (male 75, female 48) were included in this study. DAT availability in the caudate nucleus (p=0.0661) and putamen (p=0.0739) tended to differ according to rs3910105 genotype. In post-hoc analysis, DAT availability in the putamen was lower in subjects of TT genotype than those of CC/CT (p=0.0317). DAT availability in the caudate nucleus also showed a trend similar to that in the putamen (p=0.0597). Subjects of CT genotype with rs3910105 showed negative correlations with DAT availability in the putamen with SNCA-E3E4 (p=0.037, rho=-0.277), and SNCA-E4E6 (p=0.042, rho=-0.270), but not those of CC/TT genotypes. CONCLUSION This is the first study to investigate the association of rs3910105 in SNCA with DAT availability. rs3910105 had an effect on DAT availability, and the correlation between DAT availability and SNCA transcripts were significant in CT genotypes of rs3910105.
Collapse
Affiliation(s)
- Youngduk Seo
- Department of Nuclear Medicine, Busan Seongso Hospital, Busan, Korea
| | - Kyoungjune Pak
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea.
| | - Hyun Yeol Nam
- Department of Nuclear Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - Ju Won Seok
- Department of Nuclear Medicine, Chung-Ang University College of Medicine, Seoul, Korea.
| | - Myung Jun Lee
- Department of Neurology and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Eun Joo Kim
- Department of Neurology and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Jae Meen Lee
- Department of Neurosurgery and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Seong Jang Kim
- Department of Nuclear Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - In Joo Kim
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| |
Collapse
|
38
|
Ryu KJ, Yoou MS, Seo Y, Yoon KW, Kim HM, Jeong HJ. Therapeutic effects of Artemisia scoparia
Waldst. et Kitaib in a murine model of atopic dermatitis. Clin Exp Dermatol 2018; 43:798-805. [DOI: 10.1111/ced.13565] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2017] [Indexed: 01/21/2023]
Affiliation(s)
- K. J. Ryu
- Department of Pharmacology; College of Korean Medicine; Kyung Hee University; Seoul Korea
| | - M. S. Yoou
- Department of Pharmacology; College of Korean Medicine; Kyung Hee University; Seoul Korea
| | - Y. Seo
- Division of Marine Environment and Bioscience; Korea Maritime University; Busan Korea
| | - K. W. Yoon
- Department of Biotechnology; Hoseo University; Asan Chungnam Korea
| | - H. M. Kim
- Department of Pharmacology; College of Korean Medicine; Kyung Hee University; Seoul Korea
| | - H. J. Jeong
- Department of Food Science and Technology; Hoseo University; Asan Chungnam Korea
| |
Collapse
|
39
|
Park K, Lee Y, Seo Y, Lee J, Kim C. 126 cAMP response element-binding protein 1 (CREB) is a β-catenin-regulated transcription factor in squamous cell carcinoma (SCC) cells. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.131] [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]
|
40
|
Park I, Jung S, Seo Y, Oh S, Lee K, Kim S, Lee Y, Kim S. 0982 Differential Role of Sleep Disturbance and Stress Level on Depressive Symptoms and Anxiety. Sleep 2018. [DOI: 10.1093/sleep/zsy061.981] [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)
- I Park
- Seoul National University Hospital, Seoul, Republic of Korea, KOREA, REPUBLIC OF
| | - S Jung
- Seoul National University Hospital, Seoul, Republic of Korea, KOREA, REPUBLIC OF
| | - Y Seo
- Seoul National University Hospital, Seoul, Republic of Korea, KOREA, REPUBLIC OF
| | - S Oh
- Seoul National University Hospital, Seoul, Republic of Korea, KOREA, REPUBLIC OF
| | - K Lee
- Seoul National University Hospital, Seoul, Republic of Korea, KOREA, REPUBLIC OF
| | - S Kim
- Gangneung Asan Hospital, Gangwon-do, KOREA, REPUBLIC OF
| | - Y Lee
- Seoul National University Hospital, Seoul, Republic of Korea, KOREA, REPUBLIC OF
| | - S Kim
- Samsung Medical Center, Seoul, KOREA, REPUBLIC OF
| |
Collapse
|
41
|
Ko JS, Seo Y, Chae MK, Jang SY, Yoon JS. Effect of topical loteprednol etabonate with lid hygiene on tear cytokines and meibomian gland dysfunction in prosthetic eye wearers. Eye (Lond) 2017; 32:439-445. [PMID: 29052604 DOI: 10.1038/eye.2017.213] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 08/21/2017] [Indexed: 02/04/2023] Open
Abstract
PurposeTo assess tear cytokine levels and clinical outcomes in meibomian gland dysfunction (MGD) in the blind eye of patients wearing an ocular prosthesis after 2 months of treatment with topical loteprednol etabonate and eyelid scrubs with warm compresses.Patients and methodsThis study included patients with MGD wearing a unilateral ocular prosthesis for more than 1 year. All patients topically received 0.5% loteprednol etabonate and were instructed to scrub their eyelids with warm compresses on the prosthetic eye for 2 months. We evaluated tear cytokine levels using Multiplex Bead Immunoassays, performed biomicroscopic examination of the lid margins and meibomian gland, conducted meibography imaging, and assessed MGD-related ocular symptoms using a questionnaire for the prosthetic eye before and 2 months after treatment.ResultsThirty consecutive patients were included. There were significant reductions in the levels of interleukin (IL)-6, interferon-γ, monocyte chemotactic protein-1, IL-8, tumor necrosis factor-α, and IL-1β (P<0.001 for each cytokine). Moreover, there were improvements in ocular symptoms (P=0.001), lid margin abnormalities (P<0.001), meibomian gland expressibility (P<0.001) and meibography findings (P=0.037).ConclusionTopical loteprednol etabonate in conjunction with eyelid scrubs and warm compresses were effective in treating MGD in prosthetic eye wearers. Furthermore, tear cytokine measurements may serve as an additional approach for evaluating the efficacy of anti-inflammatory treatment for MGD in prosthetic eye wearers.
Collapse
Affiliation(s)
- J S Ko
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
| | - Y Seo
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
| | - M K Chae
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
| | - S Y Jang
- Department of Ophthalmology, Soonchunhyang Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - J S Yoon
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
| |
Collapse
|
42
|
Liu G, Huang SY, Franc B, Seo Y, Mitra D. Unsupervised Learning in PET Radiomics. IEEE Nucl Sci Symp Conf Rec (1997) 2017; 2017:10.1109/NSSMIC.2017.8532959. [PMID: 30631241 PMCID: PMC6324844 DOI: 10.1109/nssmic.2017.8532959] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, we investigated large scale radoimics on 116 breast cancer patients. We are particularly interested in unsupervised learning to bicluster patients and features in order to associate such biclusters with the disease characteristics. The results show that radiomics features with wavelet features have a better biclustering ability. And 172 radiomics features have shown a better classification capability.
Collapse
Affiliation(s)
- G Liu
- School of Computing, Florida Institute of Technology, Melbourne, FL
| | - S-Y Huang
- Radiology Department, University of California San Francisco
| | - B Franc
- Radiology Department, University of California San Francisco
| | - Y Seo
- Radiology Department, University of California San Francisco
| | - D Mitra
- School of Computing, Florida Institute of Technology, Melbourne, FL
| |
Collapse
|
43
|
Tamari K, Seo Y, Takahashi Y, Otani K, Kawashima A, Suzuki O, Isohashi F, Ogawa K. Ro90-7501 Is Identified As a Radiosensitizer By High Throughput Screening. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.2094] [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]
|
44
|
Grimm J, Shen C, Redmond K, Sloan L, Hazell S, Chan L, Seo Y, Nikolaidis D, Moore J, Huang E, Quon H, Bettegowda C, Lim M, Kleinberg L. Low Risk of Symptomatic Radionecrosis Following Stereotactic Radiosurgery for Multiple Brain Metastases. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.774] [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: 10/18/2022]
|
45
|
Jenkins NW, Talbott JF, Shah V, Pandit P, Seo Y, Dillon WP, Majumdar S. [ 18F]-Sodium Fluoride PET MR-Based Localization and Quantification of Bone Turnover as a Biomarker for Facet Joint-Induced Disability. AJNR Am J Neuroradiol 2017; 38:2028-2031. [PMID: 28860213 DOI: 10.3174/ajnr.a5348] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 06/06/2017] [Indexed: 11/07/2022]
Abstract
Our aim was to prospectively evaluate the relationship between low back pain-related disability and quantitative measures from [18F]-sodium fluoride ([18F]-NaF) MR imaging. Six patients with facetogenic low back pain underwent dynamic [18F]-NaF PET/MR imaging. PET metrics were correlated with clinical measures and MR imaging grading of lumbar facet arthropathy. A significant positive correlation was observed between maximum facet joint uptake rate and clinical disability (P < .05). These data suggest that dynamic [18F]-NaF PET may serve as a useful biomarker for facetogenic disability.
Collapse
Affiliation(s)
- N W Jenkins
- From the Department of Radiology and Biomedical Imaging (N.W.J., J.F.T., V.S., P.P., Y.S., W.P.D., S.M.), University of California, San Francisco, San Francisco, California
| | - J F Talbott
- From the Department of Radiology and Biomedical Imaging (N.W.J., J.F.T., V.S., P.P., Y.S., W.P.D., S.M.), University of California, San Francisco, San Francisco, California .,Department of Radiology and Biomedical Imaging (J.F.T.), Zuckerberg San Francisco General Hospital, San Francisco, California
| | - V Shah
- From the Department of Radiology and Biomedical Imaging (N.W.J., J.F.T., V.S., P.P., Y.S., W.P.D., S.M.), University of California, San Francisco, San Francisco, California
| | - P Pandit
- From the Department of Radiology and Biomedical Imaging (N.W.J., J.F.T., V.S., P.P., Y.S., W.P.D., S.M.), University of California, San Francisco, San Francisco, California
| | - Y Seo
- From the Department of Radiology and Biomedical Imaging (N.W.J., J.F.T., V.S., P.P., Y.S., W.P.D., S.M.), University of California, San Francisco, San Francisco, California
| | - W P Dillon
- From the Department of Radiology and Biomedical Imaging (N.W.J., J.F.T., V.S., P.P., Y.S., W.P.D., S.M.), University of California, San Francisco, San Francisco, California
| | - S Majumdar
- From the Department of Radiology and Biomedical Imaging (N.W.J., J.F.T., V.S., P.P., Y.S., W.P.D., S.M.), University of California, San Francisco, San Francisco, California
| |
Collapse
|
46
|
Shin J, Choi D, Sohn K, Seo Y, Kim C. 852 Targeted deletion of crif1 in mouse skin epidermis impairs skin homeostasis. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.878] [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]
|
47
|
Chen Y, Cui Y, O'Connor P, Seo Y, Camarda GS, Hossain A, Roy U, Yang G, James RB. Test of a 32-channel Prototype ASIC for Photon Counting Application. IEEE Nucl Sci Symp Conf Rec (1997) 2016. [PMID: 28626357 DOI: 10.1109/nssmic.2015.7582272] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A new low-power application-specific integrated circuit (ASIC) for Cadmium Zinc Telluride (CZT) detectors for single-photon emission computed tomography (SPECT) application is being developed at BNL. As the first step, a 32-channel prototype ASIC was designed and tested recently. Each channel has a preamplifier followed by CR-RC3 shaping circuits and three independent energy bins with comparators and 16-bit counters. The ASIC was fabricated with TSMC 0.35-μm complementary metal-oxide-semiconductor (CMOS) process and tested in laboratories. The power consumption is around 1 mW/ch with a 2.5-V supply. With a gain of 400 mV/fC and the peaking time of 500 ns, the equivalent noise charge (ENC) of 360 e- has been measured in room temperature while the crosstalk rate is less than 0.3%. The 10-bit DACs for global thresholds have an integral nonlinearity (INL) less than 0.56% and differential nonlinearity (DNL) less than 0.33%. In the presentation, we will report the detailed test results with this ASIC.
Collapse
Affiliation(s)
- Y Chen
- Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Y Cui
- Brookhaven National Laboratory, Upton, NY 11973, USA
| | - P O'Connor
- Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Y Seo
- University of California, San Francisco, San Francisco, CA 94143
| | - G S Camarda
- Brookhaven National Laboratory, Upton, NY 11973, USA
| | - A Hossain
- Brookhaven National Laboratory, Upton, NY 11973, USA
| | - U Roy
- Brookhaven National Laboratory, Upton, NY 11973, USA
| | - G Yang
- Brookhaven National Laboratory, Upton, NY 11973, USA
| | - R B James
- Brookhaven National Laboratory, Upton, NY 11973, USA
| |
Collapse
|
48
|
Onishi H, Shioyama Y, Matsumoto Y, Takayama K, Matsuo Y, Miyakawa A, Yamashita H, Matsushita H, Aoki M, Nihei K, Kimura T, Ishiyama H, Murakami N, Nakata K, Takeda A, Uno T, Nomiya T, Takanaka T, Seo Y. Excellent Survival! Multi-Institutional Study of Stereotactic Body Radiation Therapy for Medically Operable and Young (70 Years Old or Younger) Patients With Stage I Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1720] [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]
|
49
|
Kawashima A, Isohashi F, Mabuchi S, Okubo H, Tamari K, Seo Y, Suzuki O, Yoshioka Y, Kimura T, Ogawa K. Early Outcomes and Dose-Volume Analysis for Patients With Cervical Cancer Treated With Computed Tomography-Based Treatment Planning in Brachytherapy. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1418] [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]
|
50
|
Abstract
An investigation of the foaming behavior of polybutylene terephthalate (PBT) resins in extrusion is performed. Commercial grades of PBT with different molecular weights and rheological characteristics are chosen. PBTs with a high temperature chemical blowing agent are extruded under different material and operational conditions (e.g., amount of blowing agent, set temperature at the die, screw RPM, etc.) to allow the understanding of the effects of those conditions on product characteristics. The foamed extrudates are analyzed for density, morphology, and crystallinity. It is shown that the foaming behavior and the foam quality of PBT are functions of the characteristic properties of the resins including rheological and crystallization behavior.
Collapse
Affiliation(s)
- B. Jeong
- Otto H. York Department of Chemical Engineering, NJIT, Newark, NJ, USA
| | - M. Xanthos
- Otto H. York Department of Chemical Engineering, NJIT, Newark, NJ, USA, Polymer Processing Institute, GITC Bldg., Suite 3901, NJIT, Newark, NJ 07102, USA,
| | - Y. Seo
- Polymer Processing Technology Team, Tech Center, LG Chemical Ltd., Taejeon, Korea
| |
Collapse
|