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Kim JY, Hong JY, Kim SM, Ryu KH, Kim DS, Lee SH, Na JH, Cho HH, Yu J, Lee J. Socio-economic factors and medical conditions affecting regular stomach cancer screening in Korea: a retrospective longitudinal study using national public health data for 11 years. Public Health 2024; 227:70-77. [PMID: 38128357 DOI: 10.1016/j.puhe.2023.11.029] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/03/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023]
Abstract
OBJECTIVE This study aimed to explore socio-economic factors and medical conditions that affect regular stomach cancer (SC) screening among Korean adults. STUDY DESIGN This was a retrospective observational study. METHODS Study subjects were 5545 adults aged ≥40 years who participated in the 2007-2012 Korean National Health and Nutrition Examination Survey and were followed up to year 2017 based on data linking to the Korean National Health Insurance Service and Korean Health Insurance Review and Assessment. Socio-economic factors included sex, age, residential area, education, occupation, marital status, disability, public and private health insurance, service through local public health organizations, history of cancer except for SC, and family history of SC. Medical factors included six gastric lesions with the possibility of facilitating SC screening, including benign gastric neoplasm, chronic atrophic gastritis, gastric polyp, Helicobacter pylori infection, intestinal metaplasia, and peptic ulcers. The outcome was adherence to SC screening, which was divided into non-adherence, irregular adherence, and regular adherence. RESULTS After adjusting for the effects of socio-economic factors, multivariate ordinal logistic regression revealed that participants with a history of four types of gastric lesions were more likely to regularly participate in SC screening: chronic atrophic gastritis (odds ratio [OR] 1.567; 95% confidence interval [CI] = 1.276-1.923), gastric polyps (OR 1.565; 95% CI = 1.223-2.003), H. pylori infection (OR 1.637; 95% CI = 1.338-2.003), and peptic ulcer (OR 2.226; 95% CI 1.750-2.831). CONCLUSIONS To improve participation in SC screening, it is necessary to implement personalized strategies for individuals at risk for gastric cancer in addition to population-based strategies for vulnerable groups.
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Affiliation(s)
- J-Y Kim
- Department of Biomedical Informatics, College of Medicine, Konyang University, Daejeon, South Korea; Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Konyang University, Daejeon, South Korea
| | - J Y Hong
- Department of Biomedical Informatics, College of Medicine, Konyang University, Daejeon, South Korea
| | - S M Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea.
| | - K H Ryu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea
| | - D S Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea
| | - S H Lee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea
| | - J H Na
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea
| | - H H Cho
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea
| | - J Yu
- Medical Data Research group, Konyang University Hospital, Daejeon, South Korea
| | - J Lee
- Medical Data Research group, Konyang University Hospital, Daejeon, South Korea
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LaBella A, Kim DS, Chow JS, Padua HM, Zhang D. Age-specific Dose Catalog for Diagnostic Fluoroscopy and Fluoroscopically Guided Interventional Procedures from a Pediatric Hospital. Radiology 2024; 310:e232128. [PMID: 38226878 DOI: 10.1148/radiol.232128] [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: 01/17/2024]
Abstract
Background Fluoroscopy is an imaging modality associated with a wide range of dose levels, characterized using a variety of dose metrics, including effective dose. However, for clinical procedures, effective dose is a seldom-used and unregulated metric in the United States, and thus, it is not extensively studied in radiology despite potentially large clinical implications for patients, especially children and infants. Purpose To formulate and report a dose catalog across all diagnostic and interventional radiology (IR) fluoroscopy examination or procedure types at a specialized tertiary care pediatric hospital. Materials and Methods In this retrospective study, dose metrics taken from radiation dose structured reports of fluoroscopy between October 2014 and March 2023 were analyzed. The reports included fluoroscopy across 18 diagnostic examination types and 24 IR procedure types. The National Cancer Institute dosimetry system for Radiography and Fluoroscopy Monte Carlo software was used to estimate age-specific effective dose from dose-area product (DAP). The DAP-to-effective dose conversion factors were estimated per IR procedure type and diagnostic fluoroscopy examination type based on age. Results A total of 11 536 individual diagnostic fluoroscopy examinations (18 types) and 8017 individual IR procedures (24 types) were analyzed. Median effective dose values per diagnostic fluoroscopy examination type ranged from 0.0010 to 0.44 mSv (mean, 0.0808 mSv ± 0.0998 [SD]). Calculated DAP-to-effective dose conversion factors ranged from 0.04 to 2.48 mSv/Gy · cm2 (mean, 0.758 mSv/Gy · cm2 ± 0.614) across all diagnostic fluoroscopy examination types. Median effective dose values per IR procedure type ranged from 0.0007 to 3.90 mSv (mean, 0.6757 mSv ± 0.8989). Calculated DAP-to-effective dose conversion factors ranged from 0.001 to 0.87 mSv/Gy · cm2 (mean, 0.210 mSv/Gy · cm2 ± 0.235) across all IR procedure types. Conclusion A pediatric fluoroscopy dose catalog was created, including age-specific effective dose, using a repeatable robust method based on accurate clinical data. © RSNA, 2024 Supplemental material is available for this article. See also the editorial by Borrego and Balter in this issue.
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Affiliation(s)
- Andy LaBella
- From the Department of Radiology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA 02115
| | - Don-Soo Kim
- From the Department of Radiology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA 02115
| | - Jeanne S Chow
- From the Department of Radiology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA 02115
| | - Horacio M Padua
- From the Department of Radiology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA 02115
| | - Da Zhang
- From the Department of Radiology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA 02115
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Montgomery BK, Cidambi EO, Birch CM, Wang K, Miller PE, Kim DS, Shore BJ. Minimizing Surgeon Radiation Exposure During Operative Treatment of Pediatric Supracondylar Humerus Fractures. J Pediatr Orthop 2023:01241398-990000000-00272. [PMID: 37104779 DOI: 10.1097/bpo.0000000000002421] [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: 04/29/2023]
Abstract
BACKGROUND Orthopaedic surgeons are exposed to high levels of radiation, which may lead to higher rates of cancer among orthopaedic surgeons. There are a series of techniques currently practiced to pin supracondylar humerus fractures including pinning the arm on the C-arm itself, using a plexiglass rectangle or a graphite floating arm board; however, the variation in radiation exposure to the surgeon is unknown. We aimed to determine how the position of the C-arm affects radiation exposure to the surgeon during the treatment of a pediatric supracondylar humerus fracture. MATERIAL AND METHODS A simulated operating room was created to simulate a closed reduction and percutaneous pinning of a supracondylar humerus fracture. A phantom model was used to simulate the patient's arm. We assessed performing the procedure with the arm on plexiglass, graphite, or on top of the C-arm image receptor. The C-arm was positioned either with the source down and image receptor up (standard position) or with the source up and image receptor down (inverted position). Radiation exposure was recorded from levels corresponding to the surgeon's head, midline, and groin. The estimated effective dose equivalent was calculated to account for the varying radiation sensitivity of different organs. RESULTS We found the effective dose equivalent, or the overall body damage from radiation, was 5.4 to 7.8% higher than the surgeon when the C-arm was in the inverted position (source up, image receptor down). We did not find any differences in radiation exposure to the surgeon when the arm was supported on plexiglass versus graphite. CONCLUSION The C-arm positioned in the standard fashion exposes the surgeon to less damaging radiation. Therefore, when the surgeon is standing, we recommend using the C-arm in the standard position. CLINICAL RELEVANCE Orthopaedic surgeons who stand should use the C-arm in the standard position to pin supracondylar humerus fractures to lower the risk of ionizing radiation exposure.
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Affiliation(s)
| | - Emily O Cidambi
- Department of Orthopaedic Surgery, Rady Children's Hospital, San Diego, CA
| | - Craig M Birch
- Department of Orthopaedic Surgery
- Harvard Medical School, Boston, MA
| | - Kemble Wang
- Melbourne Orthopaedic Surgeon, East Melbourne, Australia
| | | | - Don-Soo Kim
- Department of Radiology, Boston Children's Hospital
| | - Benjamin J Shore
- Department of Orthopaedic Surgery
- Harvard Medical School, Boston, MA
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Jones AK, Wunderle KA, Fruscello T, Simanowith M, Cline B, Dharmadhikari S, Duan X, Durack JC, Hirschl D, Kim DS, Mahmood U, Mann SD, Martin C, Metwalli Z, Moirano JM, Neill RA, Newsome J, Padua H, Schoenfeld AH, Miller DL. Patient Radiation Doses in IR Procedures: The American College of Radiology Dose Index Registry-Fluoroscopy Pilot. J Vasc Interv Radiol 2023; 34:544-555.e11. [PMID: 36379286 DOI: 10.1016/j.jvir.2022.11.003] [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] [Received: 06/13/2022] [Revised: 10/14/2022] [Accepted: 11/06/2022] [Indexed: 11/15/2022] Open
Abstract
PURPOSE To update normative data on fluoroscopy dose indices in the United States for the first time since the Radiation Doses in Interventional Radiology study in the late 1990s. MATERIALS AND METHODS The Dose Index Registry-Fluoroscopy pilot study collected data from March 2018 through December 2019, with 50 fluoroscopes from 10 sites submitting data. Primary radiation dose indices including fluoroscopy time (FT), cumulative air kerma (Ka,r), and kerma area product (PKA) were collected for interventional radiology fluoroscopically guided interventional (FGI) procedures. Clinical facility procedure names were mapped to the American College of Radiology (ACR) common procedure lexicon. Distribution parameters including the 10th, 25th, 50th, 75th, 95th, and 99th percentiles were computed. RESULTS Dose indices were collected for 70,377 FGI procedures, with 50,501 ultimately eligible for analysis. Distribution parameters are reported for 100 ACR Common IDs. FT in minutes, Ka,r in mGy, and PKA in Gy-cm2 are reported in this study as (n; median) for select ACR Common IDs: inferior vena cava filter insertion (1,726; FT: 2.9; Ka,r: 55.8; PKA: 14.19); inferior vena cava filter removal (464; FT: 5.7; Ka,r: 178.6; PKA: 34.73); nephrostomy placement (2,037; FT: 4.1; Ka,r: 39.2; PKA: 6.61); percutaneous biliary drainage (952; FT: 12.4; Ka,r: 160.5; PKA: 21.32); gastrostomy placement (1,643; FT: 3.2; Ka,r: 29.1; PKA: 7.29); and transjugular intrahepatic portosystemic shunt placement (327; FT: 34.8; Ka,r: 813.0; PKA: 181.47). CONCLUSIONS The ACR DIR-Fluoro pilot has provided state-of-the-practice statistics for radiation dose indices from IR FGI procedures. These data can be used to prioritize procedures for radiation optimization, as demonstrated in this work.
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Affiliation(s)
- A Kyle Jones
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Kevin A Wunderle
- Department of Diagnostic Radiology, Cleveland Clinic, Cleveland, Ohio
| | | | | | - Brendan Cline
- Department of Radiology, Duke University Medical Center, Durham, North Carolina
| | | | - Xinhui Duan
- Department of Radiology, The University of Texas Southwestern Medical Center, Dallas, Texas
| | | | - David Hirschl
- Department of Radiology, Montefiore Medical Center, Bronx, New York
| | - Don-Soo Kim
- Department of Radiology, Boston Children's Hospital, Boston, Massachusetts
| | - Usman Mahmood
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Steve D Mann
- Department of Radiology, Duke University Medical Center, Durham, North Carolina
| | - Charles Martin
- Department of Diagnostic Radiology, Cleveland Clinic, Cleveland, Ohio
| | - Zeyad Metwalli
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jeffrey M Moirano
- Department of Radiology, University of Washington, Seattle, Washington
| | - Rebecca A Neill
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, Georgia
| | - Janice Newsome
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, Georgia
| | - Horacio Padua
- Department of Radiology, Boston Children's Hospital, Boston, Massachusetts
| | | | - Donald L Miller
- United States Food and Drug Administration, Silver Spring, Maryland
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Lapteva KN, Savin IA, Shimansky VN, Maslennikova MA, Kim DS, Sokolova EY, Sazonova OB. [Status epilepticus after brain tumor surgery]. Zh Vopr Neirokhir Im N N Burdenko 2023; 87:65-73. [PMID: 37325828 DOI: 10.17116/neiro20238703165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
ABTRACT BACKGROUND Status epilepticus (SE) is characterized by continuous course of clinical and/or electrographic epileptic seizures. There are little data on the course and outcomes of SE after resection of brain tumors. OBJECTIVE To analyze clinical and electrographic manifestations of SE, its course and outcomes in short-term period after resection of brain tumors. MATERIAL AND METHODS We analyzed medical records of 18 patients over 18 years old between 2012 and 2019. All patients underwent resection of brain tumor and developed SE after surgery. Clinical criteria were repeated epileptic seizures without interictal recovery of consciousness, stereotypical motor phenomena, impaired consciousness with continued epileptic activity according to video-EEG data. We analyzed EEG data, neurological status, CT and laboratory data. RESULTS Metastases (33%) and meningiomas (16%) prevailed. Supratentorial tumors were observed in 61% of patients. Two patients had preoperative seizures. Non-convulsive SE was diagnosed in 62% of patients. SE was successfully treated in 77% of cases. Mortality rate in patients with SE was 44%. CONCLUSION Early postoperative SE is rare after brain tumor surgery (about 0.09%). Nevertheless, this complication is associated with high mortality. Non-convulsive SE is common (62%) that should be considered in postoperative management.
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Affiliation(s)
- K N Lapteva
- Burdenko Neurosurgical Center, Moscow, Russia
| | - I A Savin
- Burdenko Neurosurgical Center, Moscow, Russia
| | | | - M A Maslennikova
- Moscow Multidisciplinary Clinical Center «Kommunarka», Moscow, Russia
| | - D S Kim
- Burdenko Neurosurgical Center, Moscow, Russia
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Jones AK, Wunderle KA, Fruscello T, Simanowith M, Cline B, Dharmadhikari S, Duan X, Durack JC, Hirschl D, Kim DS, Mahmood U, Mann SD, Martin C, Metwalli Z, Moirano JM, Neill RA, Newsome J, Padua H, Schoenfeld AH, Miller DL. Patient Radiation Doses in Interventional Radiology Procedures: Comparison of fluoroscopy dose indices from the American College of Radiology Dose Index Registry-Fluoroscopy (DIR-Fluoro) Pilot to the RAD-IR study. J Vasc Interv Radiol 2022; 34:556-562.e3. [PMID: 36031041 DOI: 10.1016/j.jvir.2022.08.023] [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: 06/14/2022] [Revised: 08/08/2022] [Accepted: 08/14/2022] [Indexed: 11/17/2022] Open
Abstract
PURPOSE To compare interventional radiology fluoroscopically-guided intervention (FGI) radiation dose index distributions from the American College of Radiology (ACR) Fluoroscopy Dose Index Registry (DIR-Fluoro) pilot to the Radiation Doses in Interventional Radiology (RAD-IR) study. MATERIALS AND METHODS Individual and grouped ACR Common IDs (procedure types) from the DIR-Fluoro pilot were matched to procedure types in the RAD-IR study. Fifteen comparisons were made. Distribution parameters including the 10th, 25th, 50th, 75th, and 95th percentiles were compared for fluoroscopy time (FT), cumulative air kerma (Ka,r), and kerma area product (PKA). Two derived indices were computed using median dose indices. The procedure-averaged reference air kerma rate (Ka,r¯) was computed as Ka,r / FT. The procedure-averaged X-ray field size at the reference point (Ar¯) was computed as PKA / (Ka,r * 1,000). RESULTS Median FT was equally likely to be higher or lower in the DIR-Fluoro pilot compared to RAD-IR, while maximum FT was almost twice as likely to be higher in DIR-Fluoro than RAD-IR. Median Ka,r was lower in the DIR-Fluoro pilot for all procedures, as was median PKA. The maximum Ka,r and PKA were more often higher in the DIR-Fluoro pilot compared to RAD-IR. Ka,r¯ followed the same pattern as Ka,r, while Ar¯ was often greater in DIR-Fluoro. CONCLUSIONS Median dose indices have decreased since the RAD-IR study. Typical Ka,r rates are lower, a result of the use of lower default dose rates. However, opportunities for quality improvement exist, including a renewed focus on tight collimation of the imaging field of view.
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Affiliation(s)
- A Kyle Jones
- The University of Texas MD Anderson Cancer Center, 1400 Pressler, Unit 1472, Houston, TX 77030.
| | | | | | | | | | | | - Xinhui Duan
- The University of Texas Southwestern Medical Center, Dallas, TX
| | | | | | | | - Usman Mahmood
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | | | - Zeyad Metwalli
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | | | | | | | | | | | - Donald L Miller
- United States Food and Drug Administration, Silver Spring, MD
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Lin PJP, Goode AR, Corwin FD, Fisher RF, Balter S, Wunderle KA, Schueler BA, Kim DS, Zhang J, Zhou YJ, Jenkins PA, Mahmood U, Lin T, Zhao H, Park MA, Trianni A, Lendle M, Kuhls-Gilcrist A, Jans JC, Desponds L, Banasiak G, Backes S, Snyder C, Snyder A, Lu M, Gonzalez S. Report of AAPM Task Group 272: Comprehensive acceptance testing and evaluation of fluoroscopy imaging systems. Med Phys 2022; 49:e1-e49. [PMID: 35032394 DOI: 10.1002/mp.15429] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 12/07/2021] [Accepted: 12/13/2021] [Indexed: 11/06/2022] Open
Abstract
Modern fluoroscopes used for image guidance have become quite complex. Adding to this complexity are the many regulatory and accreditation requirements that must be fulfilled during acceptance testing of a new unit. Further, some of these acceptance tests have pass/fail criteria, while others do not, making acceptance testing a subjective and time consuming task. The AAPM Task Group 272 Report spells out the details of tests that are required and gives visibility to some of the tests that while not yet required, are recommended as good practice. The organization of the report begins with the most complicated fluoroscopes used in interventional radiology or cardiology, continues with general fluoroscopy and mobile C-arms. Finally, the Appendices of the report provide useful information, an example report form and topics that needed their own section due to the level of detail. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Pei-Jan Paul Lin
- Department of Radiology, Virginia Commonwealth University, Richmond, VA, 23298, USA
| | - Allen R Goode
- Department of Radiology, University of Virginia, Charlottesville, VA, 22908, USA
| | - Frank D Corwin
- Department of Radiology, Virginia Commonwealth University, Richmond, VA, 23298, USA
| | - Ryan F Fisher
- Department of Radiology, The MetroHealth System, Cleveland, OH, 44109, USA
| | - Stephen Balter
- Departments of Medicine and Radiology, Columbia University Medical Center, New York, NY, 10021, USA
| | - Kevin A Wunderle
- Department of Radiology, Cleveland Clinic, Cleveland, OH, 44195, USA
| | - Beth A Schueler
- Radiology Department, Mayo Clinic, Rochester, MN, 55905, USA
| | - Don-Soo Kim
- Department of Radiology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Jie Zhang
- Department of Radiology, University of Kentucky, Lexington, KY, 40536, USA
| | - Yifang Jimmy Zhou
- Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Peter A Jenkins
- Department of Radiology, University of Utah Health, Salt Lake City, UT, 84132, USA
| | - Usman Mahmood
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Teh Lin
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA, 19111, USA
| | - Hui Zhao
- Department of Radiation Oncology, University of Utah, Salt Lake City, UT, 84112, USA
| | - Mi-Ae Park
- Department of Radiology, University of Texas Southwestern, Dallas, TX, 75390, USA
| | - Annalisa Trianni
- Medical Physics Department, Udine University Hospital, Udine, 33100, Italy
| | | | | | - Jan C Jans
- Philips Healthcare, Best, 5680 DA, The Netherlands
| | | | | | - Steve Backes
- Atirix Medical Systems, Inc., Minneapolis, MN, 55305, USA
| | - Carl Snyder
- Atirix Medical Systems, Inc., Minneapolis, MN, 55305, USA
| | - Angela Snyder
- Atirix Medical Systems, Inc., Minneapolis, MN, 55305, USA
| | - Minghui Lu
- Varex Imaging Corporation, San Jose, CA, 95134, USA
| | - Scott Gonzalez
- Food and Drug Administration, Health and Human Services, Silver Spring, MD, 20993, USA
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Park SH, Goh TS, Park YG, Kim DS, Lee JS. Validation of a Korean version of the quality-of-life profile for spine deformities (QLPSD) in patients with adolescent idiopathic scoliosis. Eur Rev Med Pharmacol Sci 2022; 26:84-89. [PMID: 35049023 DOI: 10.26355/eurrev_202201_27751] [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] [Indexed: 06/14/2023]
Abstract
OBJECTIVE We aimed to evaluate the reliability and validity of the adapted Korean version of the Quality-of-Life Profile for Spine Deformities (QLPSD) questionnaire. PATIENTS AND METHODS English version of QLPSD was translated into Korean according to previously published guidelines. The Korean version of the QLPSD questionnaire and the Korean version of the SRS-22 was sent to 120 consecutive idiopathic scoliosis patients wearing braces recruited from the outpatient clinic. Reliability assessment and construct validity were evaluated. RESULTS The intraobserver reliability of all items in the questionnaire had a kappa statistic of agreement greater than 0.6. The QLPSD showed good test/re-test reliability (ICC = 0.815). The internal consistency of Cronbach's α was found to be very good (α = 0.918). The Korean version of QLPSD showed a significant correlation with the SRS-22 total score (p<0.001, r=-0.811) and single SRS-22 domains scores. CONCLUSIONS The adapted Korean version of the QLPSD was successfully translated and showed good measurement properties. As such, it is considered suitable for outcome assessments in Korean-speaking patients with idiopathic scoliosis.
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Affiliation(s)
- S H Park
- Department of Orthopaedic Surgery, Gupo Sungshim Hospital, Busan, Republic of Korea.
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Jones AK, Wunderle KA, Gress DA, Simanowith M, Zacharias-Andrews K, Dharmadhikari S, Duan X, Kim DS, Mahmood U, Mann SD, Moirano JM, Neill RA, Schoenfeld AH. A diagnostic medical physicist's guide to the American College of Radiology Fluoroscopy Dose Index Registry. J Appl Clin Med Phys 2021; 22:8-14. [PMID: 33764677 PMCID: PMC8035558 DOI: 10.1002/acm2.13227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/30/2020] [Accepted: 02/15/2021] [Indexed: 11/09/2022] Open
Affiliation(s)
- A Kyle Jones
- The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | | | | | | | | | | | - Xinhui Duan
- The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | | | - Usman Mahmood
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
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Ishii H, Stechman MJ, Watkinson JC, Aspinall S, Kim DS. A Review of Parathyroid Surgery for Primary Hyperparathyroidism from the United Kingdom Registry of Endocrine and Thyroid Surgery (UKRETS). World J Surg 2020; 45:782-789. [PMID: 33263777 PMCID: PMC7851004 DOI: 10.1007/s00268-020-05885-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/2020] [Indexed: 01/20/2023]
Abstract
BACKGROUND The United Kingdom Registry of Endocrine and Thyroid Surgeons is a national database holding details on > 28,000 parathyroidectomies. METHODS An extract (2004-2017) of the database was analysed to investigate the reported efficacy, safety and use of intra-operative surgical adjuncts in targeted parathyroidectomy (tPTx) and bilateral neck exploration (BNE) for adult, first-time primary hyperparathyroidism (PHPT). RESULTS 50.9% of 21,738 cases underwent tPTx. Excellent short-term (median follow-up 35 days) post-operative normocalcaemia rates were reported overall (tPTx 96.6%, BNE 94.5%, p < 0.05) and in image-positive cases (tPTx 96.7%, BNE 96%, p < 0.05). Intra-operative PTH improved overall normocalcaemia rates (tPTx 97.8% vs 96.3%, BNE 95% vs 94.4%: both p < 0.05). Intra-operative nerve monitoring reduced vocal cord (VC) dysfunction in image-positive tPTx, but not in BNE (97.8% vs 93.2%, p < 0.05). Complications were higher following BNE (7.4% vs 3.8%, p < 0.05), especially hypocalcaemia (5.3% vs 2%, p < 0.05). There was no difference in rates of subjective dysphonia following tPTx or BNE (2.4% vs 2.3%, p > 0.05), nor any difference in VC dysfunction when formally examined (4.9% vs 4.1%, p > 0.05). CONCLUSIONS In image-positive, first time, adult PHPT cases, tPTx is as safe and effective as BNE, with both achieving excellent short-term results with minimal complications.
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Affiliation(s)
- H Ishii
- Department of ENT, Head & Neck Surgery, St George's Hospital, Blackshaw Road, Tooting, London, SW17 0QT, UK.
| | - M J Stechman
- Department of Endocrine Surgery, University Hospital Wales, Cardiff, UK
| | - J C Watkinson
- Department of Paediatric Surgery, Great Ormond Street Hospital, London, UK
| | - S Aspinall
- Department of General Surgery, Aberdeen Royal Infirmary, Aberdeen, UK
| | - D S Kim
- Department of ENT, Head & Neck Surgery, St George's Hospital, Blackshaw Road, Tooting, London, SW17 0QT, UK
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11
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Nikitin PV, Ryzhova MV, Galstyan SA, Kim DS, Zubova IV, Khokhlova EA, Shugay SV. Identification of different cell clusters in the endothelium of atherosclerotic vessels and determination of inter-cluster gradient of proliferative and inflammatory activity as new diagnostic markers. Biotech Histochem 2020; 96:487-497. [PMID: 32938242 DOI: 10.1080/10520295.2020.1823016] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
To characterize atherogenesis functionally, we studied the functional heterogeneity of endotheliocytes in carotid vessels with atherosclerotic plaques and identified several distinct cell clusters. We measured the Ki-67 labeling index (Ki-67 LI), percentage of Bcl-2 cells (CP) and expression of CCL5, IL 6 and VCAM1 in each cell cluster. We also investigated how these indicators change when the plaque becomes unstable and how they affect the risk of adverse cerebrovascular events in patients. We evaluated the inter-cluster gradient of marker activity and its relation to patient prognosis. We identified five endothelial clusters: the under plaque cluster (UPC), peripheral cluster (PC), marginal cluster (MC), transient cluster (TC) and outside plaque cluster (OC). The UPC exhibited the greatest proliferative, proinflammatory and adhesive activity, but low anti-apoptotic activity. The PC exhibited the second greatest proliferative, adhesive and proinflammatory activity. Progression of atherosclerosis and transition of a stable atherosclerotic plaque to an unstable one was accompanied by increased expression of nearly all markers. The proliferative activity in the UPC, PC and OC, and the pro-inflammatory activity in UPC and anti-apoptotic activity in the PC, were correlated with prognosis. Also, two gradients of proliferative activity and a gradient of pro-inflammatory activity were associated with risk of adverse events.
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Affiliation(s)
- P V Nikitin
- P.K. Anokhin Institute of Normal Physiology, Moscow, Russian Federation
| | - M V Ryzhova
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
| | - S A Galstyan
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
| | - D S Kim
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
| | - I V Zubova
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
| | - E A Khokhlova
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
| | - S V Shugay
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
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12
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Nazarov VV, Linde NN, Kim DS, Danilov GV, Cherekaev VA, Kozlov AV. [Glioblastoma in the region of previously resected meningioma. Case report and literature review]. Zh Vopr Neirokhir Im N N Burdenko 2020; 84:61-68. [PMID: 32759928 DOI: 10.17116/neiro20208404161] [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: 11/17/2022]
Abstract
Combination of meningioma and glioblastoma within the same anatomical region is casuistry. We found only 13 case reports in the available literature. Some of the authors reported induced nature of the second tumor, i.e. development under the influence of the primary neoplasm. We report a patient with glioblastoma of the right frontoparietotemporal region in 3 years after previous resection of benign right-sided meningioma of sphenoid wings. Mathematical analysis of the discovered pattern resulted conclusion about its random nature, i.e. no causal relationship between both neoplasms.
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Affiliation(s)
- V V Nazarov
- Burdenko Neurosurgical Center, Moscow, Russia
| | - N N Linde
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - D S Kim
- Burdenko Neurosurgical Center, Moscow, Russia
| | - G V Danilov
- Burdenko Neurosurgical Center, Moscow, Russia
| | | | - A V Kozlov
- Burdenko Neurosurgical Center, Moscow, Russia
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13
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Kim DS, Foster BE, Collen JF, Eliasson AH. 1034 Should We Recommend More Sleep To Prevent Obesity? Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
According to the 2015-2016 National Health and Nutrition Examination Survey (NHANES), the national adult obesity rate was 40% with the incidence of adult obesity having increased by 70% over the last 30 years. Paralleling the obesity epidemic have been worsening sleep deprivation and eroding sleep quality. We analyzed data from a Cardiovascular Health Registry to explore a link between total sleep time and obesity.
Methods
Registry participants underwent anthropometrics and completed validated questionnaires assessing health behaviors and symptoms including total sleep time (TST), Epworth Sleepiness Scale (ESS), Fatigue Severity Scale (FSS), Pittsburgh Sleep Quality Index (PSQI), Perceived Stress Scale (PSS), and exercise time. Differences between subjects with sufficient (≥7 hours) and insufficient (<7 hours) sleep were analyzed using T-tests.
Results
Registry participants (n=630) had mean age 55.3±9.9 years (45% men, 391W, 182B, 26H, 12A, 19O). The subgroup with sufficient sleep (n=261, 48% men), had mean BMI 29.3±5.6 while the subgroup with insufficient sleep (n=369, 44% men) had mean BMI of 30.5±5.3, p=0.008. The insufficient sleep group was noted to be sleepier (ESS 9.7±4.9 vs 7.4±4.6, p<0.001), more fatigued (FSS 4.9±2.3 vs 3.5±2.4, p<0.001) and have worse sleep quality (PSQI 8.6±3.7 vs 4.7±2.8, p<0.001). Insufficient sleepers also perceived greater stress levels (PSS 22.2±8.4 vs 18.9±6.2, p<0.001), and showed a trend toward less exercise per week (143±134 vs 163±106 minutes, p=0.13).
Conclusion
Participants with insufficient sleep were significantly more overweight on average and were more symptomatic for insufficient sleep. While current approaches to weight management focus largely on diet and physical activity, the data from this study suggest that insufficient sleep should also be considered as a risk factor for obesity and should be incorporated into management plans for obesity.
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Affiliation(s)
- D S Kim
- Department of Internal Medicine, Walter Reed National Military Medical Center, Bethesda, MD
| | - B E Foster
- Sleep Disorders Center, Walter Reed National Military Medical Center, Bethesda, MD
| | - J F Collen
- Sleep Disorders Center, Walter Reed National Military Medical Center, Bethesda, MD
| | - A H Eliasson
- Sleep Disorders Center, Walter Reed National Military Medical Center, Bethesda, MD
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Andreev DN, Kim DS, Shishkina LV, Kalinin PL, Astafieva LI, Tropinskaya OF, Voronina IA, Turkin AM, Nazarov VV, Kadashev BA. [Breast cancer metastasis into a giant hormone-inactive pituitary adenoma adenoma. (Clinical case and literature review)]. Zh Vopr Neirokhir Im N N Burdenko 2020; 84:55-61. [PMID: 32207743 DOI: 10.17116/neiro20208401155] [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: 12/24/2022]
Abstract
Brain metastases of various types of cancer are diagnosed in 8-10% of all cancer patients. In the world literature, only 30 cases of cancer metastasis to the pituitary adenoma are described. This article presents yet another observation of a patient with breast cancer metastasis into the hormone-inactive pituitary adenoma at the Burdenko neurosurgical center, Russia The patient underwent endoscopic endonasal transsphenoid removal of the neoplasm. During microscopy and immunohistochemical studies of the biopsy, two types of tissue (pituitary adenoma and cancer metastasis) with different Ki-67 treated surgically (1% and over 40%) were found.
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Affiliation(s)
- D N Andreev
- Burdenko Neurosurgical Center, Moscow, Russia
| | - D S Kim
- Burdenko Neurosurgical Center, Moscow, Russia
| | | | - P L Kalinin
- Burdenko Neurosurgical Center, Moscow, Russia
| | | | | | | | - A M Turkin
- Burdenko Neurosurgical Center, Moscow, Russia
| | - V V Nazarov
- Burdenko Neurosurgical Center, Moscow, Russia
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15
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Lee SH, Park JS, Kim SY, Kim DS, Kim YW, Chung MP, Uh ST, Park CS, Park SW, Jeong SH, Park YB, Lee HL, Shin JW, Lee JH, Jegal Y, Lee HK, Kim YH, Song JW, Park MS. Clinical features and prognosis of patients with idiopathic pulmonary fibrosis and chronic obstructive pulmonary disease. Int J Tuberc Lung Dis 2020; 23:678-684. [PMID: 31315699 DOI: 10.5588/ijtld.18.0194] [Citation(s) in RCA: 5] [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] [Indexed: 11/10/2022] Open
Abstract
<sec> <title>BACKGROUND</title> Idiopathic pulmonary fibrosis (IPF) and chronic obstructive pulmonary disease (COPD) share common risk factors. They could therefore be expressed in a single patient. However, the prevalence, clinical characteristics and prognosis of individuals with comorbid IPF and COPD are not known. </sec> <sec> <title>METHOD</title> From 2003 to 2007, the Korean Interstitial Lung Disease Study Group created a register for idiopathic interstitial pneumonia using 2002 ATS/ERS (American Thoracic Society/European Respiratory Society) criteria. Of the 1546 IPF patients assessed, 143 had decreased lung function consistent with COPD (IPF-COPD). COPD was diagnosed based on age (≥40 years) and pulmonary function (forced expiratory volume in 1 sec [FEV1]/forced vital capacity [FVC] ratio < 0.7). </sec> <sec> <title>RESULTS</title> The median age of the IPF-COPD group was 71.0 years (interquartile range 66.0-76.0); most patients were male (88.1%). FVC (%) was significantly higher in the IPF-COPD group; however, FEV1 (%) was significantly lower in the IPF-COPD group (P < 0.001). Diffusing capacity of the lung for carbon monoxide (DLCO) was not significantly different between the two groups. In survival analysis, age and FVC (%), but not COPD, were significantly associated with prognosis (respectively P = 0.003, 0.001 and 0.401). COPD severity was also not related to prognosis (P = 0.935). </sec> <sec> <title>CONCLUSION</title> The prevalence of IPF-COPD was estimated to be ∼9.2% among all IPF patients; prognosis of patients with IPF-COPD was not worse than those with IPF alone. </sec>.
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Affiliation(s)
- S H Lee
- Yonsei University College of Medicine, Seoul, Department of Internal Medicine, National University College of Medicine, Division of Pulmonary and Critical Care Medicine, Seoul National University Bundang Hospital, Seoul
| | - J S Park
- Department of Internal Medicine, National University College of Medicine, Division of Pulmonary and Critical Care Medicine, Seoul National University Bundang Hospital, Seoul
| | - S Y Kim
- Division of Pulmonology, Department of Internal Medicine, Severance Hospital, Institute of Chest Diseases, Yonsei University College of Medicine, Seoul
| | - D S Kim
- Division of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul
| | - Y W Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Lung Institute, Seoul National University College of Medicine, Seoul
| | - M P Chung
- Division of Pulmonary and Critical Care Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul
| | - S T Uh
- Division of Allergy and Respiratory Medicine, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul
| | - C S Park
- Division of Allergy and Respiratory Medicine, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Gyeonggi-do
| | - S W Park
- Division of Allergy and Respiratory Medicine, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Gyeonggi-do
| | - S H Jeong
- Division of Pulmonology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon
| | - Y B Park
- Division of Pulmonary, Allergy & Critical Care Medicine, Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul
| | - H L Lee
- Pulmonary Division, Department of Internal Medicine, Inha University Hospital, Incheon
| | - J W Shin
- Division of Pulmonary Medicine, Department of Internal Medicine, Chung Ang University College of Medicine, Seoul
| | - J H Lee
- Department of Internal Medicine, Ewha Womans University School of Medicine, Ewha Medical Research Institute, Seoul
| | - Y Jegal
- Division of Pulmonary Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan
| | - H K Lee
- Division of Critical Care and Pulmonary Medicine, Department of Internal Medicine, Inje University Pusan Paik Hospital, Busan
| | - Y H Kim
- Division of Allergy and Pulmonology, Department of Internal Medicine, Bucheon St Mary's Hospital, The Catholic University of Korea School of Medicine, Seoul, South Korea
| | - J W Song
- Division of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul
| | - M S Park
- Division of Pulmonology, Department of Internal Medicine, Severance Hospital, Institute of Chest Diseases, Yonsei University College of Medicine, Seoul
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16
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Ahn D, Song JD, Kang SS, Lim JY, Yang SH, Ko S, Park SH, Park SJ, Kim DS, Chang HJ, Chang J. Intrinsically p-type cuprous iodide semiconductor for hybrid light-emitting diodes. Sci Rep 2020; 10:3995. [PMID: 32132624 PMCID: PMC7055318 DOI: 10.1038/s41598-020-61021-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 01/17/2020] [Indexed: 11/25/2022] Open
Abstract
Cuprous halides, characterized by a direct wide band-gap and a good lattice matching with Si, is an intrinsic p-type I-VII compound semiconductor. It shows remarkable optoelectronic properties, including a large exciton binding energy at room temperature and a very small piezoelectric coefficient. The major obstacle to its application is the difficulty in growing a single-crystal epitaxial film of cuprous halides. We first demonstrate the single crystal epitaxy of high quality cuprous iodide (CuI) film grown on Si and sapphire substrates by molecular beam epitaxy. Enhanced photoluminescence on the order of magnitude larger than that of GaN and continuous-wave optically pumped lasing were found in MBE grown CuI film. The intrinsic p-type characteristics of CuI were confirmed using an n-AlGaN/p-CuI junction that emits blue light. The discovery will provide an alternative way towards highly efficient optoelectronic devices compatible with both Si and III-nitride technologies.
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Affiliation(s)
- D Ahn
- Peta Lux Inc., 3F TLi Building, 12 Yanghyeon-ro, 405 beon-gil, Jungwon-gu, Seongnam-si, Gyeonggi-do, 13438, Republic of Korea. .,Department of Electrical and Computer Engineering and Center for Quantum Information Processing, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul, 02504, Republic of Korea. .,Physics Department, Charles E. Schmidt College of Science, Florida Atlantic University, 777 Glades Road, Boca Raton, FL, 33431-0991, USA.
| | - J D Song
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology Hwarang-ro 14 gil, Seoungbuk-ku, Seoul, 02792, Republic of Korea.
| | - S S Kang
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology Hwarang-ro 14 gil, Seoungbuk-ku, Seoul, 02792, Republic of Korea.,Department of Physics, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - J Y Lim
- Peta Lux Inc., 3F TLi Building, 12 Yanghyeon-ro, 405 beon-gil, Jungwon-gu, Seongnam-si, Gyeonggi-do, 13438, Republic of Korea
| | - S H Yang
- Peta Lux Inc., 3F TLi Building, 12 Yanghyeon-ro, 405 beon-gil, Jungwon-gu, Seongnam-si, Gyeonggi-do, 13438, Republic of Korea
| | - S Ko
- Peta Lux Inc., 3F TLi Building, 12 Yanghyeon-ro, 405 beon-gil, Jungwon-gu, Seongnam-si, Gyeonggi-do, 13438, Republic of Korea
| | - S H Park
- Electronics Department, Catholic University of Daegu, 13 Hayang-Ro, Hayang-Eup, Gyeongsan-si, Gyeongbuk, 38430, Republic of Korea
| | - S J Park
- WONIK IPS, 75 Jinwisandan-ro, Jinwi-myeon, Pyeingtaek-si, Gyeonggi-do, 17709, Republic of Korea
| | - D S Kim
- TLi Inc., 10 F TLi Building, 12 Yanghyeon-ro, 405 beon-gil, Jungwon-gu, Seongnam-si, Gyeonggi-do, 13438, Republic of Korea
| | - H J Chang
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology Hwarang-ro 14 gil, Seoungbuk-ku, Seoul, 02792, Republic of Korea
| | - Joonyeon Chang
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology Hwarang-ro 14 gil, Seoungbuk-ku, Seoul, 02792, Republic of Korea. .,Department of Materials Science & Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea. .,Yonsei-KIST Convergence Research Institute, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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17
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Kudryashev VA, Kim DS. DETERMINATION OF THE TOTAL EFFECTIVE DOSE OF EXTERNAL AND INTERNAL EXPOSURE BY DIFFERENT IONIZING RADIATION SOURCES. Radiat Prot Dosimetry 2019; 187:129-137. [PMID: 31506690 DOI: 10.1093/rpd/ncz170] [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] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 02/28/2019] [Accepted: 07/04/2019] [Indexed: 06/10/2023]
Abstract
The purpose of the research is to develop an integrated technique for determining the effective dose (E) of external and internal exposure by different sources of ionizing radiation. The proposing technique for determining the total effective dose is based on three methods of calculation. The first one is multiplying the value of the individual dose equivalent $H_{p}(10)$ by the factor of 0.642 to account for radiation shielding by various organs and tissues and its backscattering. The second method is multiplying $H_{p}(10)$ by the conversion factor of air kerma in free air in a plate phantom, depending on the photon energy. The third method is multiplying $H_{p}(10)$ by the sum of the radiosensitivity coefficients of various organs and tissues. As a result of research, a complex method was developed for determining the total effective dose, composed of doses of cosmic radiation, external gamma-, beta- and neutron radiation, internal exposure from radionuclides, including CDP of radon and thoron, entering the body through the organs of digestion and respiration. The proposed technique for determining the total effective dose allows one to take into account the comprehensive effect of ionizing radiation sources on a person and to obtain a more accurate measure of radiation risk than the existing methods provide.
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Affiliation(s)
- V A Kudryashev
- Institute of Nuclear Physics, 1 Ibragimov Street, Almaty 050032, Republic of Kazakhstan
| | - D S Kim
- Institute of Nuclear Physics, 1 Ibragimov Street, Almaty 050032, Republic of Kazakhstan
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18
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Sassaroli E, Crake C, Scorza A, Kim DS, Park MA. Image quality evaluation of ultrasound imaging systems: advanced B-modes. J Appl Clin Med Phys 2019; 20:115-124. [PMID: 30861278 PMCID: PMC6414140 DOI: 10.1002/acm2.12544] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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: 08/20/2018] [Revised: 01/02/2019] [Accepted: 01/16/2019] [Indexed: 11/10/2022] Open
Abstract
The Quality assurance of ultrasound clinical imaging systems is essential for maintaining their performance to the highest level and for complying with the requirements by various regulatory and accrediting agencies. Although there is no standardization yet, most of the quality assessment procedures available in literature are proposed for B-mode and Doppler imaging. However, ultrasound imaging systems offer a variety of advanced imaging modes, besides B-mode and Doppler, which are primarily aimed at improving image quality. This study presents computer-based methods for evaluating image quality for the advanced imaging modes of ultrasound imaging systems: harmonic imaging, spatial compounding imaging, adaptive speckle reduction, and tissue aberration correction. The functions and parameters proposed for evaluating image quality are: grayscale mapping function, image contrast, contrast-to-noise ratio (CNR), and high-contrast spatial resolution. We present our computer-based methods for evaluating image quality of these modes with a number of probe and scanner combinations, which were employed to image targets in ultrasound phantoms. The functions and parameters here proposed in image quality performance evaluation are: grayscale mapping function, image contrast, CNR, and high-contrast spatial resolution. We show that these quantities could be useful in developing standardized methods for evaluating the advanced ultrasound imaging modes, especially when the advanced mode resulted in subtle visual differences.
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Affiliation(s)
- Elisabetta Sassaroli
- Department of Radiology, Brigham and Women's Hospital & Harvard Medical School, Boston, MA, USA
| | - Calum Crake
- OxSonics Ltd, The Magdalen Centre, Oxford, UK
| | - Andrea Scorza
- Department of Engineering, Roma Tre University, Rome, Italy
| | - Don-Soo Kim
- Department of Radiology, Boston Children's Hospital, Boston, MA, USA
| | - Mi-Ae Park
- Department of Radiology, Brigham and Women's Hospital & Harvard Medical School, Boston, MA, USA
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19
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Oh S, Jang JH, Kim HJ, Seo NS, Byun SH, Kim SW, Kim DS. Long-term Follow-up of Complicated Crown Fracture With Fragment Reattachment: Two Case Reports. Oper Dent 2019; 44:574-580. [PMID: 30702408 DOI: 10.2341/18-201-t] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Two cases of complicated crown fracture of the maxillary incisors were restored using the fragment reattachment technique. Root canal treatment was performed, and the fractured fragment was bonded to the tooth structure using a dentin adhesive system and a flowable composite resin, followed by the insertion of a fiber post using dual-cured resin cement. Reattached fragments have shown reliable prognosis without inflammatory signs around bonded junctions after long-term follow-up.
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20
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Shrestha R, Atluri R, Simmons DP, Kim DS, Choi TY. A micro-pipette thermal sensing technique for measuring the thermal conductivity of non-volatile fluids. Rev Sci Instrum 2018; 89:114902. [PMID: 30501312 DOI: 10.1063/1.5044214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 10/22/2018] [Indexed: 06/09/2023]
Abstract
This research work demonstrates an innovative technique to measure the thermal conductivity of a small volume of non-volatile liquids. The method utilizes a micro-pipette thermal sensor (MPTS) (tip diameter < 2 μm) and is based on laser point heating thermometry and transient heat transfer. A laser beam is irradiated at the sensor tip immersed in a few microliters of the test fluid and the transient temperature change is recorded with the sensor. This temperature change is dependent on the surrounding fluid's thermal properties, such as thermal conductivity and diffusivity. The numerical solution for transient temperature profile for a point source is obtained using the finite element method in the COMSOL software. To determine the optimizing parameters such as thermal conductivity and power absorbed at the sensor tip, the multi-parameter fitting technique is used in MATLAB, which will fit the COMSOL simulation result with the experimental data. Three liquids with known thermal conductivity were tested to verify that the technique can be used to determine the thermal conductivity with high accuracy, and in addition, the thermal conductivity of growth media and serum used for culturing cancer cells is estimated. With the sensor size of 1-2 μm, we demonstrate the possibility of using this described method as the MPTS technique for measuring the thermal properties of microfluidic samples and biological fluids.
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Affiliation(s)
- R Shrestha
- Department of Mechanical and Energy Engineering, University of North Texas, Denton, Texas 76207, USA
| | - R Atluri
- Department of Mechanical and Energy Engineering, University of North Texas, Denton, Texas 76207, USA
| | - D P Simmons
- Department of Chemistry, University of North Texas, Denton, Texas 76201, USA
| | - D S Kim
- Department of Mechanical Engineering, POSTECH, Pohang, Gyungbuk 790-784, South Korea
| | - T Y Choi
- Department of Mechanical and Energy Engineering, University of North Texas, Denton, Texas 76207, USA
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Jang JH, Kim HY, Shin SM, Lee CO, Kim DS, Choi KK, Kim SY. Clinical Effectiveness of Different Polishing Systems and Self-Etch Adhesives in Class V Composite Resin Restorations: Two-Year Randomized Controlled Clinical Trial. Oper Dent 2018; 42:19-29. [PMID: 28002695 DOI: 10.2341/16-104-c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this randomized controlled clinical trial was to compare the clinical effectiveness of different polishing systems and self-etch adhesives in class V composite resin restorations. A total of 164 noncarious cervical lesions (NCCLs) from 35 patients were randomly allocated to one of four experimental groups, each of which used a combination of polishing systems and adhesives. The two polishing systems used were Sof-Lex XT (Sof), a multistep abrasive disc, and Enhance/Pogo (EP), a simplified abrasive-impregnated rubber instrument. The adhesive systems were Clearfil SE bond (CS), a two-step self-etch adhesive, and Xeno V (XE), a one-step self-etch adhesive. All NCCLs were restored with light-cured microhybrid resin composites (Z250). Restorations were evaluated at baseline and at 6, 12, 18, and 24 months by two blinded independent examiners using modified FDI criteria. The Fisher exact test and generalized estimating equation analysis considering repeated measurements were performed to compare the outcomes between the polishing systems and adhesives. Three restorations were dislodged: two in CS/Sof and one in CS/EP. None of the restorations required any repair or retreatment except those showing retention loss. Sof was superior to EP with regard to surface luster, staining, and marginal adaptation (p<0.05). CS and XE did not show differences in any criteria (p>0.05). Sof is clinically superior to EP for polishing performance in class V composite resin restoration. XE demonstrates clinically equivalent bonding performance to CS.
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Ishii H, Mihai R, Watkinson JC, Kim DS. Systematic review of cure and recurrence rates following minimally invasive parathyroidectomy. BJS Open 2018; 2:364-370. [PMID: 30511037 PMCID: PMC6254009 DOI: 10.1002/bjs5.77] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 04/03/2018] [Indexed: 11/28/2022] Open
Abstract
Background The majority of patients with primary hyperparathyroidism (PHPT) have a single overactive adenoma. Advances in preoperative imaging and surgical adjuncts have given rise to minimally invasive parathyroidectomy (MIP), with lower complication rates in comparison with bilateral neck exploration. Misdiagnosis and undertreatment of multiglandular disease, leading to potentially higher recurrence rates, remains a concern. This study evaluated risks of long‐term (1 year or more) recurrence following ‘targeted’ MIP in PHPT. Methods Multiple databases were searched for studies published between January 2004 and March 2017, looking at long‐term outcomes (1 year or more) following targeted MIP for PHPT. English‐language studies, with at least 50 patients and a mean follow‐up of 1 year, were included. Results A total of 5282 patients from 14 studies were included. Overall mean recurrence and cure rates were 1·6 (range 0–3·5) and 96·9 (95·5–100) per cent respectively. Mean follow‐up was 33·5 (1–145) months. When intraoperative parathyroid hormone (PTH) measurements were not done, cure rates were higher (99·3 per cent versus 98·1 per cent with use of intraoperative PTH measurement; P < 0·001) and recurrence rates lower (0·2 versus 1·5 per cent respectively; P < 0·001). Conclusion Targeted MIP for a presumed single overactive adenoma was associated with very low recurrence rates, without the need for intraoperative PTH measurement when preoperative imaging studies were concordant. Targeted MIP should be encouraged.
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Affiliation(s)
- H Ishii
- Department of Ear, Nose and Throat, Head and Neck Surgery St George's Hospital London UK
| | - R Mihai
- Department of Endocrine Surgery John Radcliffe Hospital Oxford UK
| | - J C Watkinson
- Department of Surgery Great Ormond Street Hospital London UK.,BUPA Cromwell Hospital London UK
| | - D S Kim
- Department of Ear, Nose and Throat, Head and Neck Surgery St George's Hospital London UK
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Kim DS, Son E, Lee YS, Lee YM, Park YH, Kim DH, Lee KW. Herbal Complex DKB114 for Hyperuricemia and Gout. Am J Transl Res 2018. [DOI: 10.1055/s-0038-1644979] [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: 10/28/2022]
Affiliation(s)
- DS Kim
- Korean Herbal Medicine Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Dajeon 34054, Republic of Korea
| | - E Son
- Korean Herbal Medicine Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Dajeon 34054, Republic of Korea
| | - YS Lee
- Korean Herbal Medicine Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Dajeon 34054, Republic of Korea
| | - YM Lee
- Korean Herbal Medicine Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Dajeon 34054, Republic of Korea
| | - YH Park
- Dongkook Pharmaceutical Co., LTD, Gyeonggi Bio-Center, 147, Gwanggyo-ro, Yeongtong-gu, Suwon-city, Gyeonggi-do, Republic of Korea
| | - DH Kim
- Dongkook Pharmaceutical Co., LTD, Gyeonggi Bio-Center, 147, Gwanggyo-ro, Yeongtong-gu, Suwon-city, Gyeonggi-do, Republic of Korea
| | - KW Lee
- Dongkook Pharmaceutical Co., LTD, Gyeonggi Bio-Center, 147, Gwanggyo-ro, Yeongtong-gu, Suwon-city, Gyeonggi-do, Republic of Korea
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Kim DS, Hellman O, Herriman J, Smith HL, Lin JYY, Shulumba N, Niedziela JL, Li CW, Abernathy DL, Fultz B. Nuclear quantum effect with pure anharmonicity and the anomalous thermal expansion of silicon. Proc Natl Acad Sci U S A 2018; 115:1992-1997. [PMID: 29440490 PMCID: PMC5834665 DOI: 10.1073/pnas.1707745115] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Despite the widespread use of silicon in modern technology, its peculiar thermal expansion is not well understood. Adapting harmonic phonons to the specific volume at temperature, the quasiharmonic approximation, has become accepted for simulating the thermal expansion, but has given ambiguous interpretations for microscopic mechanisms. To test atomistic mechanisms, we performed inelastic neutron scattering experiments from 100 K to 1,500 K on a single crystal of silicon to measure the changes in phonon frequencies. Our state-of-the-art ab initio calculations, which fully account for phonon anharmonicity and nuclear quantum effects, reproduced the measured shifts of individual phonons with temperature, whereas quasiharmonic shifts were mostly of the wrong sign. Surprisingly, the accepted quasiharmonic model was found to predict the thermal expansion owing to a large cancellation of contributions from individual phonons.
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Affiliation(s)
- D S Kim
- Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, CA 91125;
| | - O Hellman
- Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, CA 91125
| | - J Herriman
- Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, CA 91125
| | - H L Smith
- Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, CA 91125
| | - J Y Y Lin
- Neutron Data Analysis and Visualization Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
| | - N Shulumba
- Department of Mechanical and Civil Engineering, California Institute of Technology, Pasadena, CA 91125
| | - J L Niedziela
- Instrument and Source Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
| | - C W Li
- Department of Mechanical Engineering, University of California, Riverside, CA 92521
| | - D L Abernathy
- Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
| | - B Fultz
- Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, CA 91125;
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Abstract
Mixed rare earth oxides have been prepared from synchysite ore from the Lugiin gol rare earth deposit (Mongolia) which contains about 6% of cerium light rare earth elements. Ore powders were leached for up to 60 min using 80-120 g/l sulfuric acids at an acid to powder ratio of 20, agitation was performed by magnetic stirring followed by precipitation and calcination at 700°C for 1h. The highest leaching of REEs equal to 85% of the total REE was observed in the acid solution of 80 g/l. Obtained mixed rare earth oxides represent a layered type structure.
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26
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Kim JH, Kim DS, Yoon YK, Sohn JW, Kim MJ. Donor-Derived Strongyloidiasis Infection in Solid Organ Transplant Recipients: A Review and Pooled Analysis. Transplant Proc 2017; 48:2442-2449. [PMID: 27742318 DOI: 10.1016/j.transproceed.2015.11.045] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 11/11/2015] [Indexed: 11/16/2022]
Abstract
BACKGROUND Donor-derived Strongyloides stercoralis infection in solid organ transplant (SOT) recipients is uncommon. Immunosuppressed SOT recipients are at risk of developing severe forms of strongyloidiasis infection through transmission from an infected donor allograft. METHODS PubMed was searched for English-written articles published up to April 2015. Articles that reported cases of donor-derived strongyloidiasis infection in SOT recipients were reviewed for a pooled analysis. RESULTS A total of 27 cases were identified from various SOT recipients. Donors were mostly from Strongyloides endemic regions (23 cases). No transplant recipients received prophylaxis against strongyloidiasis infection. Median age was 53 years. Median time of presenting symptoms after the solid organ transplantation was 72 days. The most common presenting symptoms were gastrointestinal (GI) symptoms (19 cases; 70.4%). Diagnosis of strongyloidiasis infection was mainly made by the confirmation of Strongyloides larvae or worm in GI samples (19 cases) and respiratory samples (14 cases). Donor-derived strongyloidiasis infection was evidenced by serology test results in 17 cases and epidemiological risk assessment analysis in 10 cases. Ivermectin was the most commonly used medication with use of a combination of iverrmectin and albendazole or thiabendazole in 15 cases. Death was noted in 9 cases (34.6%) of 26 cases with known outcomes. Presence of sepsis or bacteremia was a predictor of mortality because it was seen in 9 patients who died (100.0%) and in 4 patients who survived (23.5%; P < .001). CONCLUSIONS Donor-derived strongyloidiasis infection in SOT recipients has high mortality. Effective donor screening and prophylaxis in high-risk SOT recipients may help to decrease morbidity and mortality associated with donor-derived strongyloidiasis.
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Affiliation(s)
- J H Kim
- Division of Infectious Diseases, Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA
| | - D S Kim
- Division of HBP Surgery and Liver Transplantation, Department of Surgery, Korea University College of Medicine, Seoul, Republic of Korea.
| | - Y K Yoon
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - J W Sohn
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - M J Kim
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
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Hwang JE, Kim SH, Jung IJ, Han SM, Ahn JW, Kwon SJ, Kim SH, Kang SY, Kim DS, Kim JB. Comparative genomic hybridization analysis of rice dwarf mutants induced by gamma irradiation. Genet Mol Res 2016; 15:gmr-15-04-gmr.15049092. [PMID: 28081277 DOI: 10.4238/gmr15049092] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Comparative genomic hybridization (CGH) is a powerful tool used to analyze changes in copy number, polymorphisms, and structural variations in the genome. Gene copy number variation (CNV) is a common form of natural diversity in the genome, which can create new genes and alter gene structure. Thus, CNVs may influence phenotypic variation and gene expression. In this study, to detect CNVs, we irradiated rice seeds with gamma rays (300 Gy) and selected two dwarf mutagenized plants, GA-III-189 and -1052, in the M3 generation. These plants were subjected to CGH analysis using Agilent's RICE CGH array. Most of the CNVs identified were less than 10 kb in length. We detected 90 amplified and 18 deleted regions in GA-III-189, and 99 amplified and 11 deleted regions in GA-III-1052. Of note, CNVs were located on chromosome 12 in both GA-III-189 and -1052, which contained 39 commonly amplified regions in 29 genes. The commonly amplified genes included six genes encoding F-box domain-containing proteins. Alterations in these F-box domain-containing genes were confirmed by quantitative RT-PCR. Integration of CGH and gene expression data identified copy number aberrations and novel genes potentially involved in the dwarf phenotype. These CGH and gene expression data may be useful for uncovering the mechanisms underlying the dwarf phenotype.
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Affiliation(s)
- J E Hwang
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Republic of Korea.,Division of Ecological Conservation, Bureau of Ecological Research, National Institute of Ecology, Seocheon, Republic of Korea
| | - S-H Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Republic of Korea
| | - I J Jung
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Republic of Korea
| | - S M Han
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Republic of Korea
| | - J-W Ahn
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Republic of Korea
| | - S-J Kwon
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Republic of Korea
| | - S H Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Republic of Korea
| | - S-Y Kang
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Republic of Korea
| | - D S Kim
- NJ Biopia Co. Ltd., Gwangju, Republic of Korea
| | - J-B Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk, Republic of Korea
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Kwak JY, Seok JK, Suh HJ, Choi YH, Hong SS, Kim DS, Boo YC. Antimelanogenic effects of luteolin 7-sulfate isolated from Phyllospadix iwatensis Makino. Br J Dermatol 2016; 175:501-11. [PMID: 26914711 DOI: 10.1111/bjd.14496] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2016] [Indexed: 01/10/2023]
Abstract
BACKGROUND Abnormal deposition of melanin may cause an aesthetic skin problem; therefore, the control of unwanted excessive melanin synthesis is the major goal of cosmetic research. OBJECTIVES To identify novel tyrosinase (TYR) inhibitors from marine plants and examine their cellular antimelanogenic effects. METHODS The extracts of 50 marine plants endemic to Korea were screened against human TYR. Active constituents were then isolated from the selected plant extracts that showed potential and their chemical structures elucidated. Furthermore, their antimelanogenic effects were examined using murine melanoma B16/F10 cells and human epidermal melanocytes (HEM). RESULTS Among the tested extracts, that of Phyllospadix iwatensis Makino exhibited the strongest human TYR inhibitory activity. The active constituents were purified from the butanol fraction of the P. iwatensis extract and identified as hispidulin 7-sulfate and luteolin 7-sulfate. Luteolin 7-sulfate inhibited human TYR more strongly than hispidulin 7-sulfate, luteolin, hispidulin and arbutin. Furthermore, luteolin 7-sulfate showed lower cytotoxicity than luteolin in both B16/F10 cells and HEM. Luteolin 7-sulfate attenuated cellular melanin synthesis more effectively in B16/F10 cells and HEM stimulated by α-melanocyte-stimulating hormone and l-tyrosine than arbutin. CONCLUSIONS This study demonstrates that luteolin 7-sulfate isolated from P. iwatensis is a human TYR inhibitor with advantageous antimelanogenic properties, and would be useful for development as a therapeutic agent for the control of unwanted skin pigmentation.
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Affiliation(s)
- J Y Kwak
- Department of Molecular Medicine, Cell and Matrix Research Institute, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, 680, Gukchaebosang-ro, Jung-gu, Daegu, 41944, Korea
| | - J K Seok
- Department of Molecular Medicine, Cell and Matrix Research Institute, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, 680, Gukchaebosang-ro, Jung-gu, Daegu, 41944, Korea
| | - H-J Suh
- Gyeongbuk Natural Color Industry Institute, 181, Cheonmun-ro, Yeongcheon-si, Gyeongsangbuk-do, 38896, Korea
| | - Y-H Choi
- Bio-Center, Gyeonggi Institute of Science and Technology Promotion, 147, Gwanggyo-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16229, Korea
| | - S S Hong
- Bio-Center, Gyeonggi Institute of Science and Technology Promotion, 147, Gwanggyo-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16229, Korea
| | - D S Kim
- Korea Marine Ecology Institute, 60, Centum jungang-ro, Haeundae-gu, Busan, 48059, Korea
| | - Y C Boo
- Department of Molecular Medicine, Cell and Matrix Research Institute, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, 680, Gukchaebosang-ro, Jung-gu, Daegu, 41944, Korea. .,Ruby Crown Co., Ltd, Kyungpook National University Business Incubation Center, 80, Daehak-ro, Buk-gu, Daegu, 41566, Korea.
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Abstract
Microswimmers, such as bacteria, are known to show different behaviours depending on their local environment. They identify spatial chemical gradients to find nutrient rich areas (chemotaxis) and interact with shear flows to accumulate in high shear regions. Recently, artificial microswimmers have been developed which mimic their natural counterparts in many ways. One of the exciting topics in this field is to study these artificial motors in several natural settings like the ones bacteria interact with. In this Focus article, we summarize recent observations of artificial swimmers in chemical gradients, shear flows and other interesting natural environments simulated in the lab using microfluidics and nanotechnology.
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Affiliation(s)
- J Katuri
- Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569, Stuttgart, Germany. and Institute for Bioengineering of Catalonia (IBEC), Baldiri I Reixac 10-12, 08028 Barcelona, Spain.
| | - K D Seo
- Department of Mechanical Engineering, POSTECH (Pohang University of Science and Technology), Pohang, Gyeongbuk, 790-784 Korea
| | - D S Kim
- Department of Mechanical Engineering, POSTECH (Pohang University of Science and Technology), Pohang, Gyeongbuk, 790-784 Korea
| | - S Sánchez
- Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569, Stuttgart, Germany. and Institute for Bioengineering of Catalonia (IBEC), Baldiri I Reixac 10-12, 08028 Barcelona, Spain. and Catalan Institute for Research and Advanced Studies (ICREA), Psg. Lluís Companys, 23, 08010 Barcelona, Spain
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Lin PJP, Schueler BA, Balter S, Strauss KJ, Wunderle KA, LaFrance MT, Kim DS, Behrman RH, Shepard SJ, Bercha IH. Accuracy and calibration of integrated radiation output indicators in diagnostic radiology: A report of the AAPM Imaging Physics Committee Task Group 190. Med Phys 2015; 42:6815-29. [DOI: 10.1118/1.4934831] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Yang SM, Kim SRN, Youn WK, Kim CS, Kim DS, Yi KW, Hwang NM. Generation of Charged Nanoparticles During Thermal Evaporation of Silver at Atmospheric Pressure. J Nanosci Nanotechnol 2015; 15:8418-8423. [PMID: 26726527 DOI: 10.1166/jnn.2015.11458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The generation of charged silver nanoparticles in the gas phase during thermal evaporation of silver at atmospheric pressure was confirmed by the nano-differential mobility analyzer (DMA). Effects of the evaporation temperature, the nitrogen gas flow rate and the amount of silver to be evaporated on the size distribution of charged nanoparticles (CNPs) were examined. Both positively and negatively-charged nanoparticles were generated under all processing conditions adopted in this study. The deposition behavior of CNPs was affected by the gas flow, which is affected by the temperature gradient in the reactor and by the applied electric bias. The electric bias, which not only enhanced the film growth rate but also produced a much denser film surface, turned out to be an important process parameter under the condition where an appreciable amount of CNPs is generated.
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Shin S, Lee JW, Lee Y, Kim DS. Spontaneous partial regression of naevus of Ota with the development of vitiligo. Br J Dermatol 2015; 174:694-5. [PMID: 26474418 DOI: 10.1111/bjd.14232] [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: 11/30/2022]
Affiliation(s)
- S Shin
- Department of Dermatology, Severance Hospital & Cutaneous Biology Research Institute, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Korea
| | - J W Lee
- Department of Dermatology, Severance Hospital & Cutaneous Biology Research Institute, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Korea
| | - Y Lee
- Department of Dermatology, Severance Hospital & Cutaneous Biology Research Institute, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Korea
| | - D S Kim
- Department of Dermatology, Severance Hospital & Cutaneous Biology Research Institute, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Korea
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Kim DS, Kang C, Kim DH, Kim SC, Lee SH, Jeong JH, Kang TS, Jung SM, Lee SB, Lee KW, Kim RB. External validation of the prognostic index in acute paraquat poisoning. Hum Exp Toxicol 2015; 35:366-70. [PMID: 25977258 DOI: 10.1177/0960327115586821] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Some studies have evaluated the prognostic indicators associated with acute paraquat (PQ) poisoning. In this study, we externally validated the Yamaguchi index, which showed a good prognostic relevance in predicting the outcome of PQ poisoning. METHODS A retrospective analysis of 297 patients was performed. The Yamaguchi index was calculated using the following equation: Eq1 = (K(+) × HCO3(-))/(Creatinine × 0.088)(mEq/L) against time from PQ ingestion (T). The patients were divided into three groups: group A: Eq1 > 1500 - 399 × log T, group B: 930 - 399 × log T < Eq1 ≤ 1500 - 399 × log T, and group C: Eq1 ≤ 930 - 399 × log T). RESULTS The overall mortality rate was 65.3% (194 of 297). The mortality rates of the three groups stratified by the Yamaguchi index were 7.1% (2 of 28), 22.4% (15 of 67), and 87.6% (177 of 202). The area under the receiver-operating characteristic curve for predicting mortality from the external validation of the Yamaguchi index was 0.842 (95% confidence interval: 0.795-0.882). CONCLUSION The Yamaguchi index is a reliable prognostic factor and could be helpful in predicting mortality due to PQ poisoning.
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Affiliation(s)
- D S Kim
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - C Kang
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - D H Kim
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S C Kim
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S H Lee
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - J H Jeong
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - T S Kang
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S M Jung
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S B Lee
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - K W Lee
- Department of Emergency Medicine, Catholic University of Daegu, Daegu, Republic of Korea
| | - R B Kim
- Department of Preventive Medicine, Dong-A University, Busan, Republic of Korea
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Chung JS, Ahn IS, Yu OH, Kim DS. Crustacean hyperglycemic hormones of two cold water crab species, Chionoecetes opilio and C. japonicus: isolation of cDNA sequences and localization of CHH neuropeptide in eyestalk ganglia. Gen Comp Endocrinol 2015; 214:177-85. [PMID: 25224573 DOI: 10.1016/j.ygcen.2014.08.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Revised: 08/26/2014] [Accepted: 08/29/2014] [Indexed: 02/09/2023]
Abstract
Crustacean hyperglycemic hormone (CHH) is primarily known for its prototypical function in hyperglycemia which is induced by the release of CHH. The CHH release takes place as an adaptive response to the energy demands of the animals experiencing stressful environmental, physiological or behavioral conditions. Although >63 decapod CHH nucleotide sequences are known (GenBank), the majority of them is garnered from the species inhabiting shallow and warm water. In order to understand the adaptive role of CHH in Chionoecetes opilio and Chionoecetes japonicus inhabiting deep water environments, we first aimed for the isolation of the full-length cDNA sequence of CHH from the eyestalk ganglia of C. opilio (ChoCHH) and C. japonicus (ChjCHH) using degenerate PCR and 5' and 3' RACE. Cho- and ChjCHH cDNA sequences are identical in 5' UTR and ORF with 100% sequence identity of the putative 138aa of preproCHHs. The length of 3' UTR ChjCHH cDNA sequence is 39 nucleotides shorter than that of ChoCHH. This is the first report in decapod crustaceans that two different species have the identical sequence of CHH. ChoCHH expression increases during embryogenesis of C. opilio and is significantly higher in adult males and females. C. japonicus males have slightly higher ChjCHH expression than C. opilio males, but no statistical difference. In both species, the immunostaining intensity of CHH is stronger in the sinus gland than that of X-organ cells. Future studies will enable us to gain better understanding of the comparative metabolic physiology and endocrinology of cold, deep water species of Chionoecetes spp.
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Affiliation(s)
- J Sook Chung
- Institute of Marine and Environmental Technology, University of Maryland Center for Environmental Science, Columbus Center, 701 E. Pratt Street, Baltimore, MD 21202, USA.
| | - I S Ahn
- Institute of Marine and Environmental Technology, University of Maryland Center for Environmental Science, Columbus Center, 701 E. Pratt Street, Baltimore, MD 21202, USA
| | - O H Yu
- Korea Institute of Ocean Science and Technology, 787 Haean-ro, Sangnok-gu, Ansan 426-744, South Korea
| | - D S Kim
- Korea Institute of Ocean Science and Technology, 787 Haean-ro, Sangnok-gu, Ansan 426-744, South Korea
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Jang IK, Yoon HH, Yang MS, Lee JE, Lee DH, Lee MW, Kim DS, Park JE. B7-H1 inhibits T cell proliferation through MHC class II in human mesenchymal stem cells. Transplant Proc 2015; 46:1638-41. [PMID: 24935340 DOI: 10.1016/j.transproceed.2013.12.059] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 12/16/2013] [Indexed: 12/26/2022]
Abstract
B7-H1 on mesenchymal stem cells (MSCs) is known to modulate immune response. However, its expression pattern and exact immunomodulatory mechanism are unclear. In this study, we examined the immunomodulatory mechanism through the expression pattern of B7-H1 and major histocompatibility complex class II in various MSCs. Human bone marrow, adipose tissue, and cord blood MSCs were isolated and cultured. B7-H1, HLA-ABC, and HLA-DR expression on MSCs by interferon-γ (IFN-γ) was detected time-dependently by flow cytometry. The inhibitory effect of MSCs on T lymphocytes was observed in phytohemagglutinin antigen-induced T cell proliferation assay. The expression of B7-H1 was rapidly induced, but the expression of HLA-DR was induced at 48 hours after IFN-γ treatment. The inhibitory effect of MSCs on T cell proliferation could be restored when the anti-B7-H1 monoclonal antibody was used to block the B7-H1, or when the HLA-DRα small interfering RNA was used to interfere with its expression. These results show that MSCs could inhibit the T cell proliferation and activation by B7-H1 depending on the presence of HLA-DR. Therefore, MSCs would have a strong effect on immune diseases such as graft-versus-host disease and autoimmune diseases when MSCs are primed with IFN-γ 48 hours before transplantation.
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Affiliation(s)
- I K Jang
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Republic of Korea; Biomedical Research Institute, Lifeliver Co Ltd, Yongin, Republic of Korea
| | - H H Yoon
- Dongguk University Research Institute of Biotechnology, Dongguk University, Seoul, Republic of Korea
| | - M S Yang
- Biomedical Research Institute, Lifeliver Co Ltd, Yongin, Republic of Korea
| | - J E Lee
- Biomedical Research Institute, Lifeliver Co Ltd, Yongin, Republic of Korea
| | - D-H Lee
- Biomedical Research Institute, Lifeliver Co Ltd, Yongin, Republic of Korea
| | - M W Lee
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - D S Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - J E Park
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Republic of Korea.
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Costabel U, Richeldi L, du Bois RM, Raghu G, Azuma A, Brown KK, Cottin V, Flaherty KR, Inoue Y, Kim DS, Kolb M, Noble PW, Selman M, Taniguchi H, Brun M, Girard M, Schlenker-Herceg R, Disse B, Collard HR. Efficacy and safety of nintedanib in patients with idiopathic pulmonary fibrosis: Results of two 52-week, Phase III, randomized, placebo-controlled trials (INPULSIS™). Pneumologie 2015. [DOI: 10.1055/s-0035-1544829] [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: 10/24/2022]
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Abstract
Complex-shaped microparticles (MPs) have attracted extensive interest in a myriad of scientific and engineering fields in recent years for their distinct morphology and capability in combining different functions within a single particle. Microfluidic techniques offer an intriguing method for fabricating MPs with excellent monodispersity and complex morphology in parallel while controlling their number and size precisely and independently. To date, there are two notable microfluidics approaches for the synthesis of complex-shaped MPs, namely droplet based, and flow-lithography based microfluidics approaches. It is undoubted that the application of complex-shaped MPs via microfluidic fabrication will hold great promise in a variety of fields including microfabrication, analytical chemistry and biomedicine.
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Affiliation(s)
- K D Seo
- Department of Mechanical Engineering, POSTECH (Pohang University of Science and Technology), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, Korea.
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Jung YJ, Lee JY, Jo KW, Yoo B, Lee CK, Kim YG, Yang SK, Byeon JS, Kim KJ, Ye BD, Lee KH, Lee SD, Kim WS, Kim DS, Shim TS. The 'either test positive' strategy for latent tuberculous infection before anti-tumour necrosis factor treatment. Int J Tuberc Lung Dis 2014; 18:428-34. [PMID: 24670697 DOI: 10.5588/ijtld.13.0644] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING A ttertiary referral centre in South Korea. OBJECTIVES The 'either test positive' strategy, incorporating both the tuberculin skin test (TST) and the T-SPOT(®).TB(T-SPOT) assay, was evaluated as a novel method for diagnosing latent tuberculous infection (LTBI) before treatment with anti-tumour necrosis factor (TNF) in patients with immune-mediated inflammatory diseases. DESIGN From June 2008 to April 2012, 430 patients received anti-TNF treatment at our institution. TST and T-SPOT were performed simultaneously at baseline. LTBI was defined as a positive TST or a positive T-SPOT result. RESULTS The positivity rates for the TST and T-SPOT assays were respectively 19.1% (82/430) and 44.2% (190/430), yielding an LTBI-positive rate of 48.6% (209/430). LTBI treatment was initiated in 46.0% (198/430) of patients and was completed by 89.4% (177/198). During follow-up (median 884 days), 0.9% (4/430) of the patients developed active tuberculosis (TB). All four TB patients were TST-negative at baseline, although two received LTBI treatment based on the baseline positive T-SPOT assay results. CONCLUSIONS The either test positive strategy is a valid method for diagnosing LTBI before anti-TNF treatment, although it is not clear whether it is superior to other strategies.
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Affiliation(s)
- Y J Jung
- Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - J Y Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chungju Hospital, School of Medicine, Konkuk University, Seoul, South Korea
| | - K-W Jo
- Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - B Yoo
- Department of Rheumatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - C-K Lee
- Department of Rheumatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Y-G Kim
- Department of Rheumatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - S-K Yang
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - J-S Byeon
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - K-J Kim
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - B D Ye
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - K-H Lee
- Okjeong Middle School, Seoul, South Korea
| | - S-D Lee
- Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - W S Kim
- Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - D S Kim
- Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - T S Shim
- Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
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Crosslin DR, Carrell DS, Burt A, Kim DS, Underwood JG, Hanna DS, Comstock BA, Baldwin E, de Andrade M, Kullo IJ, Tromp G, Kuivaniemi H, Borthwick KM, McCarty CA, Peissig PL, Doheny KF, Pugh E, Kho A, Pacheco J, Hayes MG, Ritchie MD, Verma SS, Armstrong G, Stallings S, Denny JC, Carroll RJ, Crawford DC, Crane PK, Mukherjee S, Bottinger E, Li R, Keating B, Mirel DB, Carlson CS, Harley JB, Larson EB, Jarvik GP. Genetic variation in the HLA region is associated with susceptibility to herpes zoster. Genes Immun 2014; 16:1-7. [PMID: 25297839 PMCID: PMC4308645 DOI: 10.1038/gene.2014.51] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 07/22/2014] [Accepted: 07/24/2014] [Indexed: 01/25/2023]
Abstract
Herpes zoster, commonly referred to as shingles, is caused by the varicella zoster virus (VZV). VZV initially manifests as chicken pox, most commonly in childhood, can remain asymptomatically latent in nerve tissues for many years and often re-emerges as shingles. Although reactivation may be related to immune suppression, aging and female sex, most inter-individual variability in re-emergence risk has not been explained to date. We performed a genome-wide association analyses in 22 981 participants (2280 shingles cases) from the electronic Medical Records and Genomics Network. Using Cox survival and logistic regression, we identified a genomic region in the combined and European ancestry groups that has an age of onset effect reaching genome-wide significance (P>1.0 × 10−8). This region tags the non-coding gene HCP5 (HLA Complex P5) in the major histocompatibility complex. This gene is an endogenous retrovirus and likely influences viral activity through regulatory functions. Variants in this genetic region are known to be associated with delay in development of AIDS in people infected by HIV. Our study provides further suggestion that this region may have a critical role in viral suppression and could potentially harbor a clinically actionable variant for the shingles vaccine.
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Affiliation(s)
- D R Crosslin
- 1] Division of Medical Genetics, Department of Medicine, University of Washington, Seattle, WA, USA [2] Department of Genome Sciences, University of Washington, Seattle, WA, USA
| | - D S Carrell
- Group Health Research Institute, Group Health Cooperative, Seattle, WA, USA
| | - A Burt
- Division of Medical Genetics, Department of Medicine, University of Washington, Seattle, WA, USA
| | - D S Kim
- 1] Division of Medical Genetics, Department of Medicine, University of Washington, Seattle, WA, USA [2] Department of Genome Sciences, University of Washington, Seattle, WA, USA
| | - J G Underwood
- Department of Genome Sciences, University of Washington, Seattle, WA, USA
| | - D S Hanna
- Department of Genome Sciences, University of Washington, Seattle, WA, USA
| | - B A Comstock
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - E Baldwin
- Group Health Research Institute, Group Health Cooperative, Seattle, WA, USA
| | - M de Andrade
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN, USA
| | - I J Kullo
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
| | - G Tromp
- The Sigfried and Janet Weis Center for Research, Geisinger Health System, Danville, PA, USA
| | - H Kuivaniemi
- The Sigfried and Janet Weis Center for Research, Geisinger Health System, Danville, PA, USA
| | - K M Borthwick
- The Sigfried and Janet Weis Center for Research, Geisinger Health System, Danville, PA, USA
| | - C A McCarty
- 1] Essentia Institute of Rural Health, Duluth, MN, USA [2] Center for Human Genetics, Marshfield Clinic Research Foundation, Marshfield, WI, USA
| | - P L Peissig
- Center for Human Genetics, Marshfield Clinic Research Foundation, Marshfield, WI, USA
| | - K F Doheny
- Center for Inherited Disease Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - E Pugh
- Center for Inherited Disease Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A Kho
- Divisions of General Internal Medicine and Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - J Pacheco
- Divisions of General Internal Medicine and Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - M G Hayes
- Division of Endocrinology, Metabolism, and Molecular Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - M D Ritchie
- Center for Systems Genomics, Department of Biochemistry and Molecular Biology, Pennsylvania State University, Pennsylvania, PA, USA
| | - S S Verma
- Center for Systems Genomics, Department of Biochemistry and Molecular Biology, Pennsylvania State University, Pennsylvania, PA, USA
| | - G Armstrong
- Center for Systems Genomics, Department of Biochemistry and Molecular Biology, Pennsylvania State University, Pennsylvania, PA, USA
| | - S Stallings
- Department of Biomedical Informatics, Vanderbilt University, Nashville, TN, USA
| | - J C Denny
- Department of Biomedical Informatics, Vanderbilt University, Nashville, TN, USA
| | - R J Carroll
- Department of Biomedical Informatics, Vanderbilt University, Nashville, TN, USA
| | - D C Crawford
- 1] Center for Human Genetics Research, Vanderbilt University, Nashville, TN, USA [2] Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA
| | - P K Crane
- Division of General Internal Medicine, University of Washington, Seattle, WA, USA
| | - S Mukherjee
- Division of General Internal Medicine, University of Washington, Seattle, WA, USA
| | - E Bottinger
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine, New York, NY, USA
| | - R Li
- Division of Genomic Medicine, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - B Keating
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - D B Mirel
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - C S Carlson
- Fred Hutchinson Cancer Research Center, Public Health Sciences Division, Seattle, WA, USA
| | - J B Harley
- Cincinnati Children's Hospital Medical Center/Boston's Children's Hospital (CCHMC/BCH), Boston, MA, USA
| | - E B Larson
- Group Health Research Institute, Group Health Cooperative, Seattle, WA, USA
| | - G P Jarvik
- 1] Division of Medical Genetics, Department of Medicine, University of Washington, Seattle, WA, USA [2] Department of Genome Sciences, University of Washington, Seattle, WA, USA
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Kim SG, Kim DS, Choe MS, Lee W, So J, Choi EM. Cold testing of quasi-optical mode converters using a generator for non-rotating high-order gyrotron modes. Rev Sci Instrum 2014; 85:104709. [PMID: 25362436 DOI: 10.1063/1.4898180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this paper, we test the performance of a quasi-optical, internal-gyrotron mode converter. When cold testing mode converters, a rotating higher-order mode is commonly used. However, this requires a nontrivial design and precise alignment. We thus propose a new technique for testing gyrotron mode converters by using a simple, non-rotating, higher-order mode generator. We demonstrate the feasibility of this technique for a W-band gyrotron quasi-optical mode converter by examining the excitation of a TE6,2 mode from a non-rotating mode generator. Our results demonstrate that this new cold-test scheme is an easy and efficient method for verifying the performance of quasi-optical mode converters.
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Affiliation(s)
- S G Kim
- School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea
| | - D S Kim
- Physics Department, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea
| | - M S Choe
- Physics Department, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea
| | - W Lee
- Agency for Defense Development (ADD), Daejeon 305-152, South Korea
| | - J So
- Agency for Defense Development (ADD), Daejeon 305-152, South Korea
| | - E M Choi
- School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea
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Jo KW, Lee SD, Kim WS, Kim DS, Shim TS. Treatment outcomes and moxifloxacin susceptibility in ofloxacin-resistant multidrug-resistant tuberculosis. Int J Tuberc Lung Dis 2014; 18:39-43. [PMID: 24365550 DOI: 10.5588/ijtld.13.0307] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING A tertiary referral centre in Seoul, South Korea. OBJECTIVE To investigate the effect of moxifloxacin (MFX) susceptibility and later-generation fluoroquinolone (FQ) use on the treatment outcomes of ofloxacin (OFX) resistant multidrug-resistant tuberculosis (MDR-TB). DESIGN Of 223 patients diagnosed with MDR-TB between January 2006 and December 2012, 70 (31.4%) patients with OFX-resistant MDR-TB were enrolled in this retrospective cohort study. Their treatment outcomes were analysed. RESULTS The mean age (standard deviation) of the 70 patients was 40.6 (12.9) years; 43 (61.4%) were male and 26 (37.1%) had extensively drug-resistant TB. Of the 70 patients, 22 (31.4%) had MFX-susceptible TB, while the remaining 48 (68.6%) were MFX-resistant. The MFX-susceptible and -resistant groups were comparable in terms of baseline characteristics (including age, sex and radiological severity), and respectively 90.9% (20/22) and 70.8% (34/48) were treated with later-generation FQ-containing regimens (P = 0.074; mainly MFX [40/54, 74.1%]). Treatment success was achieved in 72.7% (16/22) of the MFX-susceptible patients and in 41.7% (20/48) of the MFX-resistant patients (P = 0.021). Treatment failure was significantly higher in the MFX-resistant group (41.7% [20/48] vs. 9.1% [2/22]; P = 0.006). CONCLUSION Patients with OFX-resistant MDR-TB had significantly better treatment outcomes when susceptible to MFX. This probably reflects the effect of later-generation FQ treatment.
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Affiliation(s)
- K-W Jo
- Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - S-D Lee
- Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - W S Kim
- Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - D S Kim
- Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - T S Shim
- Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
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Affiliation(s)
- H Lee
- Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - D S Kim
- Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - K Y Chung
- Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
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43
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Cho SH, Jeon GH, Kim HS, Kim DS, Kim C. Effects of Dietary Scutellaria baicalensis Extract on Growth, Feed Utilization and Challenge Test of Olive Flounder (Paralichthys olivaceus). Asian-Australas J Anim Sci 2014; 26:90-6. [PMID: 25049710 PMCID: PMC4093052 DOI: 10.5713/ajas.2012.12147] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 07/02/2012] [Accepted: 05/29/2012] [Indexed: 11/27/2022]
Abstract
Effects of dietary Scutellaria baicalensis extract (SBE) on growth, feed utilization and challenge test of olive flounder (Paralichthys olivaceus) were determined. Six hundred thirty fish averaging 5.0 g were distributed into 18, 180-L tanks. Six experimental diets were prepared in triplicate: SBE-0, SBE-0.5, SBE-1, SBE-2, SBE-3 and SBE-5 diets containing SBE at the concentrations of 0, 0.5, 1, 2, 3 and 5%, respectively. Fish were hand-fed to apparent satiation twice a day for 8 wks. At the end of 8-wk feeding trial, ten fish from each tank were infected by Edwardsiella tarda for challenge test. Survival and weight gain of fish were not affected by dietary concentrations of SBE. However, specific growth rate of fish fed the SBE-2 diet was higher than that of fish fed the SBE-0, SBE-1, SBE-3 and SBE-5 diets. Neither feed efficiency nor serum chemical composition of fish was affected by dietary concentrations of SBE. The cumulative mortality of fish fed the SBE-0 diet was 100% at 96 h after E. tarda infection, but 77 to 87% for fish fed the other diets. Dietary inclusion of 2% SBE appears to be recommendable to improve specific growth rate of fish and SBE had the potential to mitigate mortality of fish at E. tarda infection.
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Affiliation(s)
- S H Cho
- Division of Marine Environment and BioScience, College of Ocean Science and Technology, Korea Maritime University, Busan 606-791, Korea
| | - G H Jeon
- Division of Marine Environment and BioScience, College of Ocean Science and Technology, Korea Maritime University, Busan 606-791, Korea
| | - H S Kim
- Division of Marine Environment and BioScience, College of Ocean Science and Technology, Korea Maritime University, Busan 606-791, Korea
| | - D S Kim
- Division of Marine Environment and BioScience, College of Ocean Science and Technology, Korea Maritime University, Busan 606-791, Korea
| | - C Kim
- Division of Marine Environment and BioScience, College of Ocean Science and Technology, Korea Maritime University, Busan 606-791, Korea
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Rasmussen-Torvik LJ, Stallings SC, Gordon AS, Almoguera B, Basford MA, Bielinski SJ, Brautbar A, Brilliant MH, Carrell DS, Connolly JJ, Crosslin DR, Doheny KF, Gallego CJ, Gottesman O, Kim DS, Leppig KA, Li R, Lin S, Manzi S, Mejia AR, Pacheco JA, Pan V, Pathak J, Perry CL, Peterson JF, Prows CA, Ralston J, Rasmussen LV, Ritchie MD, Sadhasivam S, Scott SA, Smith M, Vega A, Vinks AA, Volpi S, Wolf WA, Bottinger E, Chisholm RL, Chute CG, Haines JL, Harley JB, Keating B, Holm IA, Kullo IJ, Jarvik GP, Larson EB, Manolio T, McCarty CA, Nickerson DA, Scherer SE, Williams MS, Roden DM, Denny JC. Design and anticipated outcomes of the eMERGE-PGx project: a multicenter pilot for preemptive pharmacogenomics in electronic health record systems. Clin Pharmacol Ther 2014; 96:482-9. [PMID: 24960519 PMCID: PMC4169732 DOI: 10.1038/clpt.2014.137] [Citation(s) in RCA: 176] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 06/13/2014] [Indexed: 11/09/2022]
Abstract
We describe here the design and initial implementation of the eMERGE-PGx project. eMERGE-PGx, a partnership of the eMERGE and PGRN consortia, has three objectives : 1) Deploy PGRNseq, a next-generation sequencing platform assessing sequence variation in 84 proposed pharmacogenes, in nearly 9,000 patients likely to be prescribed drugs of interest in a 1–3 year timeframe across several clinical sites; 2) Integrate well-established clinically-validated pharmacogenetic genotypes into the electronic health record with associated clinical decision support and assess process and clinical outcomes of implementation; and 3) Develop a repository of pharmacogenetic variants of unknown significance linked to a repository of EHR-based clinical phenotype data for ongoing pharmacogenomics discovery. We describe site-specific project implementation and anticipated products, including genetic variant and phenotype data repositories, novel variant association studies, clinical decision support modules, clinical and process outcomes, approaches to manage incidental findings, and patient and clinician education methods.
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Affiliation(s)
- L J Rasmussen-Torvik
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - S C Stallings
- Vanderbilt Institute for Clinical and Translational Research, Nashville, Tennessee, USA
| | - A S Gordon
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - B Almoguera
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - M A Basford
- Vanderbilt Institute for Clinical and Translational Research, Nashville, Tennessee, USA
| | - S J Bielinski
- Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA
| | - A Brautbar
- Center for Human Genetics, Marshfield Clinic Research Foundation, Marshfield, Wisconsin, USA
| | - M H Brilliant
- Center for Human Genetics, Marshfield Clinic Research Foundation, Marshfield, Wisconsin, USA
| | - D S Carrell
- Group Health Research Institute, Seattle, Washington, USA
| | - J J Connolly
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - D R Crosslin
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - K F Doheny
- Center for Inherited Disease Research, Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - C J Gallego
- Division of Medical Genetics, University of Washington, Seattle, Washington, USA
| | - O Gottesman
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - D S Kim
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - K A Leppig
- Group Health Research Institute, Seattle, Washington, USA
| | - R Li
- Division of Genomic Medicine, National Human Genome Research Institute, Bethesda, Maryland, USA
| | - S Lin
- Biomedical Informatics Research Center, Marshfield Clinic Research Foundation, Marshfield, Wisconsin, USA
| | - S Manzi
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, Massachusetts, USA
| | - A R Mejia
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - J A Pacheco
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - V Pan
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - J Pathak
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA
| | - C L Perry
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, Massachusetts, USA
| | - J F Peterson
- Department of Biomedical Informatics and Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - C A Prows
- 1] Division Human Genetics, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA [2] Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - J Ralston
- Group Health Research Institute, Seattle, Washington, USA
| | - L V Rasmussen
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - M D Ritchie
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, State College, Pennsylvania, USA
| | - S Sadhasivam
- 1] Department of Anesthesia, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA [2] Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - S A Scott
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - M Smith
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - A Vega
- Mount Sinai Faculty Practice Associates Primary Care Program, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - A A Vinks
- 1] Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio, USA [2] Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - S Volpi
- Division of Genomic Medicine, National Human Genome Research Institute, Bethesda, Maryland, USA
| | - W A Wolf
- 1] Division of Genetics and Genomics, Boston Children's Hospital, Boston, Massachusetts, USA [2] Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - E Bottinger
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - R L Chisholm
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - C G Chute
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA
| | - J L Haines
- Center for Human Genetics Research, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - J B Harley
- 1] Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio, USA [2] Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, USA [3] US Department of Veterans Affairs Medical Center, Cincinnati, Ohio, USA
| | - B Keating
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - I A Holm
- 1] Division of Genetics and Genomics, Boston Children's Hospital, Boston, Massachusetts, USA [2] Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA [3] The Manton Center for Orphan Disease Research, Boston Children's Hospital, Boston, Massachusetts, USA
| | - I J Kullo
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota, USA
| | - G P Jarvik
- Division of Medical Genetics, University of Washington, Seattle, Washington, USA
| | - E B Larson
- Group Health Research Institute, Seattle, Washington, USA
| | - T Manolio
- Division of Genomic Medicine, National Human Genome Research Institute, Bethesda, Maryland, USA
| | - C A McCarty
- Essentia Institute of Rural Health, Duluth, Minnesota, USA
| | - D A Nickerson
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - S E Scherer
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas, USA
| | - M S Williams
- Genomic Medicine Institute, Geisinger Health System, Danville, Pennsylvania, USA
| | - D M Roden
- 1] Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA [2] Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - J C Denny
- 1] Department of Biomedical Informatics and Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA [2] Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
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Park S, Kang S, Kim DS, Shin BK, Moon NR, Daily JW. Ebselen pretreatment attenuates ischemia/reperfusion injury and prevents hyperglycemia by improving hepatic insulin signaling and β-cell survival in gerbils. Free Radic Res 2014; 48:864-74. [PMID: 24807533 DOI: 10.3109/10715762.2014.917410] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Transient carotid artery occlusion causes ischemia/reperfusion (I/R) injury resulting in neuron and pancreatic β-cell death with consequential post-stroke hyperglycemia, which can lead to diabetes and may accelerate the development of Alzheimer's disease. Antioxidants have been shown to protect against the I/R injury and destruction of neurons. However, it is unknown whether the protection against I/R injury extends to the pancreatic β-cells. Therefore, we investigated whether treatment with ebselen, a glutathione peroxidase mimic, prevents neuronal and β-cell death following I/R in gerbils susceptible to stroke. After 28 days post artery occlusion, there was widespread neuronal cell death in the CA1 of the hippocampus and elevated IL-1β and TNF-α levels. Pretreatment with ebselen prevented the death by 56% and attenuated neurological damage (abnormal eyelid drooping, hair bristling, muscle tone, flexor reflex, posture, and walking patterns). Ischemic gerbils also exhibited impaired glucose tolerance and insulin sensitivity which induced post-stroke hyperglycemia associated with decreased β-cell mass due to increased β-cell apoptosis. Ebselen prevented the increased β-cell apoptosis, possibly by decreasing IL-1β and TNF-α in islets. Ischemia also attenuated hepatic insulin signaling, and expression of GLUT2 and glucokinase, whereas ebselen prevented the attenuation and suppressed gluconeogenesis by decreasing PEPCK expression. In conclusion, antioxidant protection by ebselen attenuated I/R injury of neurons and pancreatic β-cells and prevented subsequent impairment of glucose regulation that could lead to diabetes and Alzheimer's disease.
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Affiliation(s)
- S Park
- Department of Food and Nutrition, College of Natural Science, Obesity/Diabetes Research Institutes, Hoseo University , Asan-Si , Republic of Korea
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Park SJ, Hong JT, Choi SJ, Kim HS, Park WK, Han ST, Park JY, Lee S, Kim DS, Ahn YH. Detection of microorganisms using terahertz metamaterials. Sci Rep 2014; 4:4988. [PMID: 24832607 PMCID: PMC4023130 DOI: 10.1038/srep04988] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 04/28/2014] [Indexed: 12/23/2022] Open
Abstract
Microorganisms such as fungi and bacteria cause many human diseases and therefore rapid and accurate identification of these substances is essential for effective treatment and prevention of further infections. In particular, contemporary microbial detection technique is limited by the low detection speed which usually extends over a couple of days. Here we demonstrate that metamaterials operating in the terahertz frequency range shows promising potential for use in fabricating the highly sensitive and selective microbial sensors that are capable of high-speed on-site detection of microorganisms in both ambient and aqueous environments. We were able to detect extremely small amounts of the microorganisms, because their sizes are on the same scale as the micro-gaps of the terahertz metamaterials. The resonant frequency shift of the metamaterials was investigated in terms of the number density and the dielectric constants of the microorganisms, which was successfully interpreted by the change in the effective dielectric constant of a gap area.
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Affiliation(s)
- S J Park
- Department of Physics and Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - J T Hong
- Department of Physics and Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - S J Choi
- Department of Biological Science, Ajou University, Suwon 443-749, Korea
| | - H S Kim
- Department of Biological Science, Ajou University, Suwon 443-749, Korea
| | - W K Park
- Advanced Medical Device Research Center, Korea Electrotechnology Research Institute, Ansan 426-170, Korea
| | - S T Han
- Advanced Medical Device Research Center, Korea Electrotechnology Research Institute, Ansan 426-170, Korea
| | - J Y Park
- Department of Physics and Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - S Lee
- Department of Physics and Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - D S Kim
- Center for Subwavelength Optics and Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea
| | - Y H Ahn
- Department of Physics and Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
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Brown KK, Richeldi L, Costabel U, Flaherty KR, Kim DS, Noble PW, Raghu G, Selman M, Brun M, Klüglich M, Staines H, du Bois RM. Behandlung der Idiopathischen Lungenfibrose (IPF) mit dem Tyrosinkinaseinhibitor Nintedanib: Patientenberichtete Endpunkte in der TOMORROW-Studie. Pneumologie 2014. [DOI: 10.1055/s-0034-1368044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Eom JE, Kim DS, Lee MW, Yu DK, Jin KS, Shin S, Lee SH, Sung KW, Koo HH, Yoo KH. Quality of functional haematopoietic stem/progenitor cells from cryopreserved human umbilical cord blood. Vox Sang 2014; 107:181-7. [PMID: 24517183 DOI: 10.1111/vox.12132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 01/02/2014] [Accepted: 01/03/2014] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVES Transplantation of cryopreserved umbilical cord blood (UCB) can be used to treat a multitude of haematologic and immunological diseases. In this study, we examined the quality of UCB cryopreserved for 2 (group I), 4 (group II) and 6 (group III) years. METHODS The following parameters and procedures were used to test individual units of cryopreserved UCB: the number of total nucleated cells (TNC), cell viability, CFU-GM assay, T-cell activation in vitro and haematopoietic stem cell engraftment in NOD/SCID mice in vivo. RESULTS The TNC recovery rates for groups I, II and III were 106·2 ± 6·17%, 96·69 ± 6·39% and 100·38 ± 5·27%, respectively, and the mean percentages of viable cells after thawing were 86·88%, 86·38% and 87·43%. When TNC were plated at 5 × 10(3), the number of CFU-GM was 13·6 (group I), 13·8 (group II), 14·2 (group III) and 14·7 (fresh UCB). We confirmed that the huCD4(+) and huCD8(+) T cells within cryopreserved UCB are functionally responsive by assessment of activated huCD25(+) cells. Moreover, the percentage of huCD45(+) cells in the bone marrow was 4·32 ± 1·29% (group I), 4·48 ± 1·11% (group II), 4·40% ± 1·12% (group III) and 4·50% ± 0·66% (fresh UCB), and that in the peripheral blood was 14·69 ± 3·08% (group I), 15·24 ± 4·05% (group II), 15·74 ± 3·43% (group III) and 17·48 ± 3·74% (fresh UCB) in NOD/SCID mice infused with isolated huCD34(+) cells. CONCLUSION These results indicated that cryopreserved UCB units efficiently retrieve in functionally competent form and are suitable for transplantation.
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Affiliation(s)
- J-E Eom
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Jung JM, Lee DH, Kim KT, Choi MS, Cho YG, Lee HS, Choi SI, Lee SR, Kim DS. Reference intervals for whole blood viscosity using the analytical performance-evaluated scanning capillary tube viscometer. Clin Biochem 2014; 47:489-93. [PMID: 24503006 DOI: 10.1016/j.clinbiochem.2014.01.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 01/14/2014] [Accepted: 01/18/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVES This study was performed to establish the reference intervals for whole blood viscosity (WBV) using the analytical performance-evaluated scanning capillary tube viscometer (SCTV). DESIGN AND METHODS The analytical performance of the SCTV was evaluated using three different levels of QC materials and sixty human EDTA-blood samples. To establish the reference intervals for WBV, 297 healthy individuals (123 men and 174 women) were selected from 1083 subjects. RESULTS Within-day precisions with QC materials and human whole blood and between-day precisions with QC materials were below 5.0%, 6.6% and 8.0% in CVs at all shear rates, respectively. Comparison tests between the SCTV and the Brookfield viscometer showed a significant correlation (R(2)=0.972, p<0.001). The reference intervals for WBV in healthy men were 3.66-5.41cP at 300s(-1) and 23.15-36.45cP at 1s(-1) while those in women were 3.27-4.32cP at 300s(-1) and 18.20-27.36cP at 1s(-1), respectively. CONCLUSIONS Using the analytical performance-evaluated SCTV, the reference intervals for WBV were established in healthy adults, which could be beneficial to the clinical utility of WBV in the aspect of appropriate modalities for the improvement of blood viscosity.
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Affiliation(s)
- J M Jung
- Hemorheology Research Institute, Chonbuk National University, Jeonbuk 516-756, South Korea
| | - D H Lee
- Department of Mechanical Design Engineering, Chonbuk National University, Jeonbuk 516-756, South Korea; Department of Bionanosystem Engineering, Chonbuk National University, Jeonbuk 516-756, South Korea
| | - K T Kim
- Department of Bionanosystem Engineering, Chonbuk National University, Jeonbuk 516-756, South Korea
| | - M S Choi
- Department of Laboratory Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea
| | - Y G Cho
- Department of Laboratory Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea
| | - H S Lee
- Department of Laboratory Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea
| | - S I Choi
- Department of Laboratory Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea
| | - S R Lee
- Division of Cardiology, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea.
| | - D S Kim
- Department of Laboratory Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea.
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Lee JH, Kim DS, Cho HJ, Gang GH, Kwak YS. First Report of Leaf Spot in Farfugium japonicum Caused by Alternaria tenuissima in Korea. Plant Dis 2013; 97:1382. [PMID: 30722162 DOI: 10.1094/pdis-03-13-0253-pdn] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Farfugium japonicum (L.) Kitam (common name: Leopard plant) is known as a medical herb and belongs to family Asteraceae (1). In June 2012, a leaf spot disease was observed on the leaf surface of F. japonicum at a forest research plot Jinju, Gyeongnam province, Korea. More than 95% of F. japonicum plants were infected and leaf spot symptom appeared in the regions under our investigation. Light brownish symptoms initially developed and the spot size gradually increased and turned dark brown with an irregular shape as the disease progressed (spot size 1 to 10 mm in diameter). At the late stage of disease, spots became hollow and completely dehydrated. The infected leaves were easily crumbled, possibly due to dryness. To isolate the causal agent, the infected leaves were surface disinfected and pieces of leaves were placed on water agar (WA). Nine isolates were isolated from 10 pieces of the infected leaves. Fungi mycelia from the WA were transferred on potato dextrose agar (PDA) and incubated at 28°C for 7 days. The colonies were purple navy to black and conidia spores developed on the media. The morphological characteristics of spores were multi-septate, dark brown, pyriform, and 6.7 to 12.8 × 22.2 to 38.4 μm. The spores had 1 to 4 transverse and 0 to 3 longitudinal septa. The morphological characteristics of the isolates showed considerably similar to well-known Alternaria tenuissima (2). The leaf spot disease caused by A. cinerariae of F. japonicum was reported from Japan (3). Spores of A. cinerariae are golden brown to brown with 3 to 9 transverse and 0 to 6 longitudinal septa and are 87.5 × 28.7 μm (avg.) (3). To verify pathogenicity of the isolate, the pure cultured fungi on the PDA medium was taken (4 mm in diameter) and placed on healthy leaves of Leopard plant. The artificially inoculated leaves were placed on wet filter paper in Petri dishes and incubated at 25°C and 80% humidity. At 7 days after inoculation, similar disease symptoms developed on 8 out of 10 infected Leopard plant leaves. The pathogen was reisolated from artificially infected leaves. To identify in molecular biology level, genomic DNA was extracted and the ITS-rDNA region was amplified using universal primers ITS1 and ITS4. The amplified PCR product was purified and sequenced (528 bp) with ITS1 and ITS4 primers for both directions and then deposited in GenBank (Accession No. KC415611.1). The BLAST search showed that it matched previously reported A. tenuissima with 100% identity. To the best of our knowledge, this is the first report of Leopard plant leaf spot disease in Korea. References: (1) E. Y. Kim et al. J. Ethnopharmacol. 146:40, 2013. (2) E. G. Simmons. Page 1 in: Alternaria Biology, Plant Diseases and Metabolites. J. Chelchowski and A. Visconti, eds. Elsevier, Amsterdam, 1992. (3) T. Sakoda et al. Res. Bull. Pl. Prot. Japan 46:73, 2010.
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Affiliation(s)
- J H Lee
- Daejung Golf Engineering Co. Ltd, Yongin, 449-881, Korea
| | - D S Kim
- Southern Forest Resource Research Center, Korea Forest Research Institute, Jinju, 660-300, Korea
| | - H J Cho
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, 660-701, Korea
| | - G-H Gang
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, 660-701, Korea
| | - Y-S Kwak
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, 660-701, Korea
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