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Kim YM, Lubinska-Szczygeł M, Park YS, Deutsch J, Ezra A, Luksrikul P, Beema Shafreen RM, Gorinstein S. Characterization of Bioactivity of Selective Molecules in Fruit Wines by FTIR and NMR Spectroscopies, Fluorescence and Docking Calculations. Molecules 2023; 28:6036. [PMID: 37630288 PMCID: PMC10457986 DOI: 10.3390/molecules28166036] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 07/30/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Fourier transform infrared (FTIR) and proton nuclear magnetic resonance (1H NMR) spectroscopies were applied to characterize and compare the chemical shifts in the polyphenols' regions of some fruit wines. The obtained results showed that FTIR spectra (1800-900 cm-1) and 1H NMR (δ 6.5-9.3 ppm) of different fruit wines can be used as main indices of the year of vintage and quality of fruit wines. In addition to the classical determination of antioxidant profiles and bioactive substances in wines, fluorometric measurements were used to determine the interactions of wine substances with the main human serum proteins. The results showed relatively high binding properties of wines with the highest one for pomegranate, followed by kiwifruit and persimmon wines. The interactions of vitamin C, catechin and gallic acid with human serum albumin (HSA) were also examined by docking studies. The docking calculations showed that gallic acid has a stronger binding affinity compared to catechin and vitamin C. The stronger binding affinity of gallic acid may be due to three hydrogen bonds and pi-pi interactions. The fluorescence and docking studies proved that only the bioactive compounds of wines and not the amount of alcohol have high binding properties to human serum proteins. The emphasis in this report was made on the utility of FTIR, NMR and fluorescence of wines as a mean of wine authentication and its fingerprint. The findings, based on polyphenols from fruits and fruit wines, their bioactivity and health properties, offer valuable insights for future endeavours focused on designing healthy food products.
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Affiliation(s)
- Young-Mo Kim
- Industry Academic Collaboration Foundation, Kwangju Women’s University, Gwangju 62396, Republic of Korea;
| | - Martyna Lubinska-Szczygeł
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdansk, Poland
| | - Yong-Seo Park
- Department of Horticultural Science, Mokpo National University, Muan 58554, Republic of Korea;
| | - Joseph Deutsch
- Faculty of Medicine, Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (J.D.); (A.E.)
| | - Aviva Ezra
- Faculty of Medicine, Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (J.D.); (A.E.)
| | - Patraporn Luksrikul
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand;
- Center for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural Industries, KU Institute for Advanced Studies, Kasetsart University, Bangkok 10900, Thailand
| | - Raja Mohamed Beema Shafreen
- Dr Umayal Ramanathan College for Women, Alagappa University, Alagappapuram, Karaikudi 630003, Tamilnadu, India
| | - Shela Gorinstein
- Faculty of Medicine, Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (J.D.); (A.E.)
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Abstract
With the increase of the adult orthodontic population, there is a need for an accurate and evidence-based prediction of the posttreatment face in 3 dimensions (3D). The objectives of this study are 1) to develop a 3D postorthodontic face prediction method based on a deep learning network using the patient-specific factors and orthodontic treatment conditions and 2) to validate the accuracy and clinical usability of the proposed method. Paired sets (n = 268) of pretreatment (T1) and posttreatment (T2) cone-beam computed tomography (CBCT) of adult patients were trained with a conditional generative adversarial network to generate 3D posttreatment facial data based on the patient's gender, age, and the changes of upper (ΔU1) and lower incisor position (ΔL1) as input. The accuracy was calculated with prediction error and mean absolute distances between real T2 (T2) and predicted T2 (PT2) near 6 perioral landmark regions, as well as percentage of prediction error less than 2 mm using test sets (n = 44). For qualitative evaluation, an online survey was conducted with experienced orthodontists as panels (n = 56). Overall, PT2 indicated similar 3D changes to the T2 face, with the most apparent changes simulated in the perioral regions. The mean prediction error was 1.2 ± 1.01 mm with 80.8% accuracy. More than 50% of the experienced orthodontists were unable to distinguish between real and predicted images. In this study, we proposed a valid 3D postorthodontic face prediction method by applying a deep learning algorithm trained with CBCT data sets.
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Affiliation(s)
- Y S Park
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea
| | - J H Choi
- Smile Future Orthodontics, Seoul, Korea.,Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, Korea
| | - Y Kim
- Imagoworks Inc., Seoul, Korea
| | - S H Choi
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea
| | - J H Lee
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
| | - K H Kim
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
| | - C J Chung
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
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Son KJ, Kim YA, Park YS. Economic Burden Attributable to Clostridioides difficile Infections in South Korea: A Nationwide Propensity Score-Matched Study. J Hosp Infect 2021; 120:1-8. [PMID: 34774670 DOI: 10.1016/j.jhin.2021.10.016] [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] [Received: 07/25/2021] [Revised: 10/11/2021] [Accepted: 10/25/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Clostridioides (Clostridium) difficile is an important pathogen that causes diarrhoea in patients who take antibacterial drugs. Considering the limited medical resources, it is necessary to prioritize the management of threats caused by antibiotic use and the spread of germs, but there are little available data, especially for C. difficile infections in South Korea. AIMS In this study, we analysed the hospital length of stay (LOS) and the increase in medical costs due to C. difficile infections. METHODS Propensity score-matched experimental (hospitalized patients with C. difficile infection)-control (hospitalized patients without C. difficile infection) studies were conducted to estimate the increase in the LOS and medical costs associated with C. difficile infections. The data were obtained from the National Health Insurance Service-National Sample Cohort from 2006 to 2015. Reliable results were obtained by actively calibrating various confounding variables of demographic characteristics, disease severity, and information on healthcare facilities. FINDINGS The C. difficile-attributable increase in LOS and hospitalization costs were 36.9 days and 8,298 USD, respectively, per infection case. CONCLUSION This study quantified the considerable burden associated with C. difficile infections in South Korea.
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Affiliation(s)
- K J Son
- Department of Biostatistics and Computing, Yonsei University Graduate School, Seoul, Korea; Department of Research and Analysis, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Y A Kim
- Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
| | - Y S Park
- Department of Internal Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Korea; Department of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea.
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Kim YM, Abas F, Park YS, Park YK, Ham KS, Kang SG, Lubinska-Szczygeł M, Ezra A, Gorinstein S. Bioactivities of Phenolic Compounds from Kiwifruit and Persimmon. Molecules 2021; 26:molecules26154405. [PMID: 34361562 PMCID: PMC8347458 DOI: 10.3390/molecules26154405] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 01/04/2023] Open
Abstract
Fruit used in the common human diet in general, and kiwifruit and persimmon particularly, displays health properties in the prevention of heart disease. This study describes a combination of bioactivity, multivariate data analyses and fluorescence measurements for the differentiating of kiwifruit and persimmon, their quenching and antioxidant properties. The metabolic differences are shown, as well in the results of bioactivities and antioxidant capacities determined by ABTS, FRAP, CUPRAC and DPPH assays. To complement the bioactivity of these fruits, the quenching properties between extracted polyphenols and human serum proteins were determined by 3D-fluorescence spectroscopy studies. These properties of the extracted polyphenols in interaction with the main serum proteins in the human metabolism (human serum albumin (HSA), α-β-globulin (α-β G) and fibrinogen (Fgn)), showed that kiwifruit was more reactive than persimmon. There was a direct correlation between the quenching properties of the polyphenols of the investigated fruits with serum human proteins, their relative quantification and bioactivity. The results of metabolites and fluorescence quenching show that these fruits possess multiple properties that have a great potential to be used in industry with emphasis on the formulation of functional foods and in the pharmaceutical industry. Based on the quenching properties of human serum proteins with polyphenols and recent reports in vivo on human studies, we hypothesize that HSA, α-β G and Fgn will be predictors of coronary artery disease (CAD).
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Affiliation(s)
- Young-Mo Kim
- Industry Academic Collaboration Foundation, Kwangju Women’s University, Gwangsan-gu, Gwangju 62396, Korea;
| | - Faridah Abas
- Department of Food Science, Faculty of Food Science and Technology, University Putra Malaysia, Serdang 43400, Selangor, Malaysia;
- Laboratory of Natural Products, Institute of Bioscience, University Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Yong-Seo Park
- Department of Horticultural Science, Mokpo National University, Muan 534-729, Jeonnam, Korea;
| | - Yang-Kyun Park
- Department of Food Engineering, Mokpo National University, Muan 534-729, Jeonnam, Korea; (Y.-K.P.); (K.-S.H.); (S.-G.K.)
| | - Kyung-Sik Ham
- Department of Food Engineering, Mokpo National University, Muan 534-729, Jeonnam, Korea; (Y.-K.P.); (K.-S.H.); (S.-G.K.)
| | - Seong-Gook Kang
- Department of Food Engineering, Mokpo National University, Muan 534-729, Jeonnam, Korea; (Y.-K.P.); (K.-S.H.); (S.-G.K.)
| | - Martyna Lubinska-Szczygeł
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdansk, Poland;
| | - Aviva Ezra
- Faculty of Medicine, Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel;
| | - Shela Gorinstein
- Faculty of Medicine, Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel;
- Correspondence:
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Ko SJ, Cho J, Choi SM, Park YS, Lee CH, Lee SM, Yoo CG, Kim YW, Lee J. Phase Angle and Frailty Are Important Prognostic Factors in Critically Ill Medical Patients: A Prospective Cohort Study. J Nutr Health Aging 2021; 25:218-223. [PMID: 33491037 PMCID: PMC7548529 DOI: 10.1007/s12603-020-1487-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 07/27/2020] [Indexed: 01/27/2023]
Abstract
OBJECTIVES To investigate whether phase angle (PhA) measured by bioelectrical impedance analysis (BIA) and frailty are associated with the outcomes of critical illnesses. DESIGN A single-center prospective cohort study. SETTING Medical intensive care unit (ICU) in Seoul National University Hospital, Seoul, Republic of Korea. PARTICIPANTS 97 patients who were admitted to the medical ICU. MEASUREMENTS On admission, PhA was measured by BIA, and frailty was assessed by the Korean Modified Barthel Index (KMBI) scoring system. Patients were classified according to PhA and KMBI scores, and their impact on the outcomes of critical illnesses was evaluated. RESULTS The patients' mean age was 62.4 ± 16.4 years, and 56 of the patients (57.7%) were men. Having a high PhA above 3.5 at the time of ICU admission was associated with lower in-hospital mortality (adjusted OR 0.42, p = .042), and a shorter duration of ICU stay (5.6 days vs. 9.8 days, p = .016) compared to those with a low PhA. Other indices measured by BIA were not significantly associated with outcomes of critical illnesses. Frailty (KMBI > 60) was associated with more mechanical ventilation days (2.3 days vs. 7.1 days; p = .018). CONCLUSION Both PhA and frailty are important prognostic factors predicting the outcomes of critical illnesses. Low PhA scores were associated with increased mortality and a longer duration of ICU stay, and frailty was associated with more mechanical ventilation days.
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Affiliation(s)
- S J Ko
- Jinwoo Lee, MD, Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro, Seoul, 03080, Republic of Korea; E-mail:
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Park SH, Lim DH, Sohn TS, Lee J, Zang DY, Kim ST, Kang JH, Oh SY, Hwang IG, Ji JH, Shin DB, Yu JI, Kim KM, An JY, Choi MG, Lee JH, Kim S, Hong JY, Park JO, Park YS, Lim HY, Bae JM, Kang WK. A randomized phase III trial comparing adjuvant single-agent S1, S-1 with oxaliplatin, and postoperative chemoradiation with S-1 and oxaliplatin in patients with node-positive gastric cancer after D2 resection: the ARTIST 2 trial ☆. Ann Oncol 2020; 32:368-374. [PMID: 33278599 DOI: 10.1016/j.annonc.2020.11.017] [Citation(s) in RCA: 123] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Adjuvant chemotherapy and chemoradiotherapy are some of the standards of care for gastric cancer (GC). The Adjuvant chemoRadioTherapy In Stomach Tumors (ARTIST) 2 trial compares two adjuvant chemotherapy regimens and chemoradiotherapy in patients with D2-resected, stage II or III, node-positive GC. PATIENTS AND METHODS The ARTIST 2 compared, in a 1:1:1 ratio, three adjuvant regimens: oral S-1 (40-60 mg twice daily 4 weeks on/2 weeks off) for 1 year, S-1 (2 weeks on/1 week off) plus oxaliplatin 130 mg/m2 every 3 weeks (SOX) for 6 months, and SOX plus chemoradiotherapy 45 Gy (SOXRT). Randomization was stratified according to surgery type (total or subtotal gastrectomy), pathologic stage (II or III), and Lauren histologic classification (diffuse or intestinal/mixed). The primary endpoint was disease-free survival (DFS) at 3 years; a reduction of 33% in the hazard ratio (HR) for DFS with SOX or SOXRT, when compared with S-1, was considered clinically meaningful. The trial is registered at clinicaltrials.gov (NCT0176146). RESULTS A total of 546 patients were recruited between February 2013 and January 2018 with 182, 181, and 183 patients in the S-1, SOX, and SOXRT arms, respectively. Median follow-up period was 47 months, with 178 DFS events observed. Estimated 3-year DFS rates were 64.8%, 74.3%, and 72.8% in the S-1, SOX, and SOXRT arms, respectively. HR for DFS in the control arm (S-1) was shorter than that in the SOX and SOXRT arms: S-1 versus SOX, 0.692 (P = 0.042) and S-1 versus SOXRT, 0.724 (P = 0.074). No difference in DFS was found between SOX and SOXRT (HR 0.971; P = 0.879). Adverse events were as anticipated in each arm, and were generally well-tolerated and manageable. CONCLUSIONS In patients with curatively D2-resected, stage II/III, node-positive GC, adjuvant SOX or SOXRT was effective in prolonging DFS, when compared with S-1 monotherapy. The addition of radiotherapy to SOX did not significantly reduce the rate of recurrence after D2 gastrectomy.
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Affiliation(s)
- S H Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - D H Lim
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - T S Sohn
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - D Y Zang
- Division of Hematology-Oncology, Department of Internal Medicine, Hallym University Medical Center, Hallym University College of Medicine, Anyang-si, Gyeonggi-do, Korea
| | - S T Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J H Kang
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - S Y Oh
- Department of Hematology-Oncology, Dong-A University, Busan, Korea
| | - I G Hwang
- Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - J H Ji
- Department of Internal Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - D B Shin
- Division of Hematology and Oncology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Korea
| | - J I Yu
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K-M Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J Y An
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - M G Choi
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J H Lee
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J Y Hong
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J O Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Y S Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H Y Lim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J M Bae
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - W K Kang
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Van Cutsem E, Yoshino T, Lenz HJ, Lonardi S, Falcone A, Limón ML, Saunders M, Sobrero A, Park YS, Ferreiro R, Hong YS, Tomasek J, Taniguchi H, Ciardiello F, Stoehr J, Oum'Hamed Z, Vlassak S, Studeny M, Argiles G. Nintedanib for the treatment of patients with refractory metastatic colorectal cancer (LUME-Colon 1): a phase III, international, randomized, placebo-controlled study. Ann Oncol 2019; 29:1955-1963. [PMID: 30010751 PMCID: PMC6158765 DOI: 10.1093/annonc/mdy241] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [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] [Indexed: 12/13/2022] Open
Abstract
Background Angiogenesis is critical to colorectal cancer (CRC) growth and metastasis. Phase I/II studies have demonstrated the efficacy of nintedanib, a triple angiokinase inhibitor, in patients with metastatic CRC. This global, randomized, phase III study investigated the efficacy and safety of nintedanib in patients with refractory CRC after failure of standard therapies. Patients and methods Eligible patients (Eastern Cooperative Oncology Group performance status 0–1, with histologically/cytologically confirmed metastatic/locally advanced CRC adenocarcinoma unamenable to surgery and/or radiotherapy) were randomized 1 : 1 to receive nintedanib (200 mg twice daily) or placebo (twice daily), until disease progression or undue toxicity. Patients were stratified by previous regorafenib, time from onset of metastatic disease to randomization, and region. Co-primary end points were overall survival (OS) and progression-free survival (PFS) by central review. Secondary end points included objective tumor response and disease control by central review. Results From October 2014 to January 2016, 768 patients were randomized; 765 were treated (nintedanib n = 384; placebo n = 381). Median follow-up was 13.4 months (interquartile range 11.1–15.7). OS was not improved [median OS 6.4 months with nintedanib versus 6.0 months with placebo; hazard ratio (HR), 1.01; 95% confidence interval (CI), 0.86–1.19; P = 0.8659]. There was a significant but modest increase in PFS with nintedanib versus placebo (median PFS 1.5 versus 1.4 months, respectively; HR 0.58; 95% CI 0.49–0.69; P < 0.0001). There were no complete or partial responses. Adverse events (AEs) occurred in 97% of 384 nintedanib-treated patients and 93% of 381 placebo-treated patients. The most frequent grade ≥3 AEs were liver-related AEs (nintedanib 16%; placebo 8%) and fatigue (nintedanib 9%; placebo 6%). Conclusions The study failed to meet both co-primary end points. Nintedanib did not improve OS and was associated with a significant but modest increase in PFS versus placebo. Nintedanib was well tolerated. ClinicalTrials.gov number NCT02149108 (LUME-Colon 1).
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Affiliation(s)
- E Van Cutsem
- Division of Digestive Oncology, University Hospitals Gasthuisberg Leuven and KU Leuven, Leuven, Belgium.
| | - T Yoshino
- Department of Gastrointestinal Oncology, National Cancer Center Hospital East, Chiba, Japan
| | - H J Lenz
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Los Angeles, USA
| | - S Lonardi
- Medical Oncology Unit 1, Department of Clinical and Experimental Oncology, Istituto Oncologico Veneto - IRCCS, Padua
| | - A Falcone
- Department of Translational Research on New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - M L Limón
- Department of Medical Oncology, Hospital Universitario Virgen del Rocio, Seville, Spain
| | - M Saunders
- Department of Clinical Oncology, The Christie NHS Foundation Trust, Manchester, UK
| | - A Sobrero
- Department of Medical Oncology, Azienda Ospedaliera San Martino, Genoa, Italy
| | - Y S Park
- Department of Hematology and Oncology, Samsung Medical Center, Seoul, South Korea
| | - R Ferreiro
- Department of Clinical Oncology, Ramón y Cajal Hospital, Madrid, Spain
| | - Y S Hong
- Department of Oncology, Asan Medical Center, Seoul, South Korea
| | - J Tomasek
- Department of Complex Oncology Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - H Taniguchi
- Department of Clinical Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - F Ciardiello
- Oncologia Medica, Seconda Università deli Studi di Napoli, Naples, Italy
| | - J Stoehr
- Boehringer Ingelheim, Pharma GmbH & Co. KG, Biberach, Germany
| | - Z Oum'Hamed
- Boehringer Ingelheim France S.A.S, Reims, France
| | - S Vlassak
- SCS Boehringer Ingelheim Comm.V, Brussels, Belgium
| | - M Studeny
- Division of Medicine/Clinical Development Department, Boehringer Ingelheim, Vienna, Austria
| | - G Argiles
- Medical Oncology Department, Vall d'Hebron University Hospital and Institute of Oncology (VHIO), Universitat Autònoma de Barcelona, CIBERONC, Barcelona, Spain
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Kim ST, Banks KC, Pectasides E, Kim SY, Kim K, Lanman RB, Talasaz A, An J, Choi MG, Lee JH, Sohn TS, Bae JM, Kim S, Park SH, Park JO, Park YS, Lim HY, Kim NKD, Park W, Lee H, Bass AJ, Kim K, Kang WK, Lee J. Impact of genomic alterations on lapatinib treatment outcome and cell-free genomic landscape during HER2 therapy in HER2+ gastric cancer patients. Ann Oncol 2019; 29:1037-1048. [PMID: 29409051 PMCID: PMC5913644 DOI: 10.1093/annonc/mdy034] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background To identify predictive markers for responders in lapatinib-treated patients and to demonstrate molecular changes during lapatinib treatment via cell-free genomics. Patients and methods We prospectively evaluated the efficacy of combining lapatinib with capecitabine and oxaliplatin as first line neoadjuvant therapy in patients with previously untreated, HER2-overexpressing advanced gastric cancer. A parallel biomarker study was conducted by simultaneously performing immunohistochemistry and next-generation sequencing (NGS) with tumor and blood samples. Results Complete response was confirmed in 7/32 patients (21.8%), 2 of whom received radical surgery with pathologic-confirmed complete response. Fifteen partial responses (46.8%) were observed, resulting in a 68.6% overall response rate. NGS of the 16 tumor specimens demonstrated that the most common co-occurring copy number alteration was CCNE1 amplification, which was present in 40% of HER2+ tumors. The relationship between CCNE1 amplification and lack of response to HER2-targeted therapy trended toward statistical significance (66.7% of non-responders versus 22.2% of responders harbored CCNE1 amplification; P = 0.08). Patients with high level ERBB2 amplification by NGS were more likely to respond to therapy, compared with patients with low level ERBB2 amplification (P = 0.02). Analysis of cfDNA showed that detectable ERBB2 copy number amplification in plasma was predictive to the response (100%, response rate) and changes in plasma-detected genomic alterations were associated with lapatinib sensitivity and/or resistance. The follow-up cfDNA genomics at disease progression demonstrated that there are emergences of other genomic aberrations such as MYC, EGFR, FGFR2 and MET amplifications. Conclusions The present study showed that HER2+ GC patients respond differently according to concomitant genomic aberrations beyond ERBB2, high ERBB2 amplification by NGS or cfDNA can be a positive predictor for patient selection, and tumor genomic alterations change significantly during targeted agent therapy.
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Affiliation(s)
- S T Kim
- Division of Hematology-Oncolog, Department of Medicine, Samsung Medical Center, Seoul, Korea; Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K C Banks
- Department of Medical Affair, Guardant Health, Dana-Farber Cancer Institute, Boston, USA
| | - E Pectasides
- Division of Molecular and Cellular Oncology, Dana-Farber Cancer Institute, Boston, USA
| | - S Y Kim
- Division of Hematology-Oncolog, Department of Medicine, Samsung Medical Center, Seoul, Korea; Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K Kim
- Division of Hematology-Oncolog, Department of Medicine, Samsung Medical Center, Seoul, Korea; Sungkyunkwan University School of Medicine, Seoul, Korea
| | - R B Lanman
- Department of Medical Affair, Guardant Health, Dana-Farber Cancer Institute, Boston, USA
| | - A Talasaz
- Department of Medical Affair, Guardant Health, Dana-Farber Cancer Institute, Boston, USA
| | - J An
- Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Surgery, Samsung Medical Center, Seoul, Korea
| | - M G Choi
- Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Surgery, Samsung Medical Center, Seoul, Korea
| | - J H Lee
- Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Surgery, Samsung Medical Center, Seoul, Korea
| | - T S Sohn
- Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Surgery, Samsung Medical Center, Seoul, Korea
| | - J M Bae
- Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Surgery, Samsung Medical Center, Seoul, Korea
| | - S Kim
- Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Surgery, Samsung Medical Center, Seoul, Korea
| | - S H Park
- Division of Hematology-Oncolog, Department of Medicine, Samsung Medical Center, Seoul, Korea; Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J O Park
- Division of Hematology-Oncolog, Department of Medicine, Samsung Medical Center, Seoul, Korea; Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Y S Park
- Division of Hematology-Oncolog, Department of Medicine, Samsung Medical Center, Seoul, Korea; Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H Y Lim
- Division of Hematology-Oncolog, Department of Medicine, Samsung Medical Center, Seoul, Korea; Sungkyunkwan University School of Medicine, Seoul, Korea
| | - N K D Kim
- Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
| | - W Park
- Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
| | - H Lee
- Sungkyunkwan University School of Medicine, Seoul, Korea; Division of Gastroenterolog, Department of Medicine, Samsung Medical Center, Seoul, Korea
| | - A J Bass
- Division of Molecular and Cellular Oncology, Dana-Farber Cancer Institute, Boston, USA
| | - K Kim
- Pathology and Translational Genomics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - W K Kang
- Division of Hematology-Oncolog, Department of Medicine, Samsung Medical Center, Seoul, Korea; Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J Lee
- Division of Hematology-Oncolog, Department of Medicine, Samsung Medical Center, Seoul, Korea; Sungkyunkwan University School of Medicine, Seoul, Korea.
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9
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Bak G, Choi JH, Jang HI, Jang JS, Jeon SH, Joo KK, Ju K, Jung DE, Kim JG, Kim JH, Kim JY, Kim SB, Kim SY, Kim W, Kwon E, Lee DH, Lee HG, Lee YC, Lim IT, Moon DH, Pac MY, Park YS, Rott C, Seo H, Seo JW, Seo SH, Shin CD, Yang JY, Yoo J, Yu I. Fuel-Composition Dependent Reactor Antineutrino Yield at RENO. Phys Rev Lett 2019; 122:232501. [PMID: 31298906 DOI: 10.1103/physrevlett.122.232501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 05/16/2019] [Indexed: 06/10/2023]
Abstract
We report a fuel-dependent reactor electron antineutrino (ν[over ¯]_{e}) yield using six 2.8 GW_{th} reactors in the Hanbit nuclear power plant complex, Yonggwang, Korea. The analysis uses 850 666 ν[over ¯]_{e} candidate events with a background fraction of 2.0% acquired through inverse beta decay (IBD) interactions in the near detector for 1807.9 live days from August 2011 to February 2018. Based on multiple fuel cycles, we observe a fuel ^{235}U dependent variation of measured IBD yields with a slope of (1.51±0.23)×10^{-43} cm^{2}/fission and measure a total average IBD yield of (5.84±0.13)×10^{-43} cm^{2}/fission. The hypothesis of no fuel-dependent IBD yield is ruled out at 6.6σ. The observed IBD yield variation over ^{235}U isotope fraction does not show significant deviation from the Huber-Mueller (HM) prediction at 1.3 σ. The measured fuel-dependent variation determines IBD yields of (6.15±0.19)×10^{-43} and (4.18±0.26)×10^{-43} cm^{2}/fission for two dominant fuel isotopes ^{235}U and ^{239}Pu, respectively. The measured IBD yield per ^{235}U fission shows the largest deficit relative to the HM prediction. Reevaluation of the ^{235}U IBD yield per fission may mostly solve the reactor antineutrino anomaly (RAA) while ^{239}Pu is not completely ruled out as a possible contributor to the anomaly. We also report a 2.9 σ correlation between the fractional change of the 5 MeV excess and the reactor fuel isotope fraction of ^{235}U.
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Affiliation(s)
- G Bak
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - J H Choi
- Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
| | - H I Jang
- Department of Fire Safety, Seoyeong University, Gwangju 61268, Korea
| | - J S Jang
- GIST College, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - S H Jeon
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - K K Joo
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - K Ju
- Department of Physics, KAIST, Daejeon 34141, Korea
| | - D E Jung
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J G Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J H Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J Y Kim
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - S B Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - S Y Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - W Kim
- Department of Physics, Kyungpook National University, Daegu 41566, Korea
| | - E Kwon
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - D H Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - H G Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - Y C Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - I T Lim
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - D H Moon
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - M Y Pac
- Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
| | - Y S Park
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - C Rott
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - H Seo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - J W Seo
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - S H Seo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - C D Shin
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - J Y Yang
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - J Yoo
- Institute for Basic Science, Daejeon 34047, Korea
- Department of Physics, KAIST, Daejeon 34141, Korea
| | - I Yu
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
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10
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Kim ST, Kang JH, Lee J, Lee HW, Oh SY, Jang JS, Lee MA, Sohn BS, Yoon SY, Choi HJ, Hong JH, Kim MJ, Kim S, Park YS, Park JO, Lim HY. Capecitabine plus oxaliplatin versus gemcitabine plus oxaliplatin as first-line therapy for advanced biliary tract cancers: a multicenter, open-label, randomized, phase III, noninferiority trial. Ann Oncol 2019; 30:788-795. [PMID: 30785198 DOI: 10.1093/annonc/mdz058] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Capecitabine plus oxaliplatin (XELOX) has shown modest activity and tolerable toxicity in a phase II trial for biliary tract cancers (BTCs). Meanwhile, gemcitabine plus oxaliplatin (GEMOX) has been the reference arm in recent phase II and III trials for BTCs. We aimed to investigate the efficacy of XELOX versus GEMOX as first-line therapy for advanced BCTs. PATIENTS AND METHODS In this open-label, randomized, phase III, noninferiority trial, we randomly selected patients with metastatic BCTs to receive GEMOX (gemcitabine 1000 mg/m2 on days 1 and 8, and oxaliplatin 100 mg/m2 on day 1) or XELOX (capecitabine 1000 mg/m2, twice daily, on days 1-14 and oxaliplatin 130 mg/m2 on day 1) as first-line treatment, given every 3 weeks, totaling eight cycles. The primary end point was to prove the noninferiority of XELOX to GEMOX in terms of 6-month progression-free survival (PFS) rate. RESULTS In total, 114 patients randomly received GEMOX and 108 randomly received XELOX. The median PFS was 5.3 months for the GEMOX group and 5.8 months for the XELOX group. The 6-month PFS rate was 44.5% for the GEMOX group and 46.7% for the XELOX group. The 95% confidence interval of the 6-month PFS rate difference between both groups was -12% to 16%, meeting the criteria for noninferiority of XELOX to GEMOX. There was no difference in objective response (P=0.171) and median overall survival (P=0.131) between both groups. The most common grade three to four adverse events were neutropenia and thrombocytopenia. No patient died of treatment-related causes. The XELOX group had significantly lower frequencies of hospital visits than the GEMOX group (P<0.001). CONCLUSION XELOX showed significant noninferiority to GEMOX in terms of 6-month PFS rate. Thus, XELOX could be an alternative first-line treatment of BCTs. TRIAL REGISTRATION This study was registered in ClinicalTrials.gov (number NCT01470443).
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Affiliation(s)
- S T Kim
- Division of Hemato-oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul
| | - J H Kang
- Division of Hemato-oncology, Department of Medicine, Gyeongsang National University Hospital, Jinju
| | - J Lee
- Division of Hemato-oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul
| | - H W Lee
- Division of Hemato-oncology, Department of Medicine, Ajou University School of Medicine, Suwon
| | - S Y Oh
- Division of Hemato-oncology, Department of Medicine, Dong-A University School of Medicine, Busan
| | - J S Jang
- Division of Hemato-oncology, Department of Medicine, Chung-Ang University College of Medicine, Seoul
| | - M A Lee
- Division of Hemato-oncology, Department of Medicine, Seoul St Mary's Hospital, Catholic University, Seoul
| | - B S Sohn
- Division of Hemato-oncology, Department of Medicine, Sanggye Paik Hospital, Inje University College of Medicine, Seoul
| | - S Y Yoon
- Division of Hemato-oncology, Department of Medicine, Konkuk University Medical Center, Seoul
| | - H J Choi
- Division of Hemato-oncology, Department of Medicine, Yonsei University College of Medicine, Seoul
| | - J H Hong
- Division of Hemato-oncology, Department of Medicine, Incheon St Mary's Hospital, Catholic University, Incheon
| | - M-J Kim
- Statistics and Data Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul, South Korea
| | - S Kim
- Statistics and Data Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul, South Korea
| | - Y S Park
- Division of Hemato-oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul
| | - J O Park
- Division of Hemato-oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul.
| | - H Y Lim
- Division of Hemato-oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul.
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11
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Yoo M, Kim S, Kim BS, Yoo J, Lee S, Jang HC, Cho BL, Son SJ, Lee JH, Park YS, Roh E, Kim HJ, Lee SG, Kim BJ, Kim MJ, Won CW. Moderate hearing loss is related with social frailty in a community-dwelling older adults: The Korean Frailty and Aging Cohort Study (KFACS). Arch Gerontol Geriatr 2019; 83:126-130. [PMID: 31003135 DOI: 10.1016/j.archger.2019.04.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 03/07/2019] [Revised: 04/04/2019] [Accepted: 04/07/2019] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To determine whether hearing loss is associated with social frailty in older adults. METHODS Cross-sectional analysis of cohort study data. Hearing was measured using of Pure-tone audiometry. Hearing loss was determined based on the average of hearing thresholds at 0.5, 1, and 2 kHz in the ear that had better hearing. Social frailty was defined based on the summation of the following 5 social components (1. Neighborhood meeting attendance 2. Talking to friend(s) sometimes 3.Someone gives you love and affection 4. Living alone 5. Meeting someone every day). Participants who had no correspondence to the components were considered non-social frailty; those with 1-2 components were considered social prefrailty; and those having 3 or more components were considered social frailty. RESULTS The prevalence of non-social frailty, social prefrailty, social frailty was 27.6%, 60.7% and 11.7% respectively. Of the five questions, two components (Neighborhood meeting attendance and Presence of someone who shows love and affection to the participants) were associated with hearing loss (p < 0.001). Compared to non-social frailty, the odds ratio of social frailty for hearing loss was 2.24 (95% CI 1.48-3.38) after adjusting for age, residential area, economic status, smoking, depressive disorder and MMSE, and 2.17 (95% CI 1.43-3.30) after further adjustments with physical frailty. CONCLUSION Hearing loss was associated with social frailty even after controlling confounding factors even including physical frailty.
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Affiliation(s)
- M Yoo
- Department of Family Medicine, Kyung Hee University Medical Center, kyungheedaero 23, dongdaemun-gu, 02447, Seoul, Republic of Korea
| | - S Kim
- Department of Family Medicine, Kyung Hee University Medical Center, kyungheedaero 23, dongdaemun-gu, 02447, Seoul, Republic of Korea
| | - B S Kim
- Department of Family Medicine, Kyung Hee University Medical Center, kyungheedaero 23, dongdaemun-gu, 02447, Seoul, Republic of Korea
| | - J Yoo
- Department of Family Medicine, Kyung Hee University Medical Center, kyungheedaero 23, dongdaemun-gu, 02447, Seoul, Republic of Korea
| | - S Lee
- Department of Family Medicine, Kyung Hee University Medical Center, kyungheedaero 23, dongdaemun-gu, 02447, Seoul, Republic of Korea
| | - H C Jang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - B L Cho
- Department of Family Medicine, Center for Health Promotion and Optimal Aging, Seoul National University College of Medicine & Hospital, Seoul, Republic of Korea
| | - S J Son
- Department of Psychiatry, Ajou University School of Medicine, Suwon, Republic of Korea
| | - J H Lee
- Catholic institute of U-healthcare, The Catholic University of Korea, Republic of Korea
| | - Y S Park
- Department of Family Medicine, Hallym University Chuncheon Sacred Heart Hospital, Chuncheon, Republic of Korea
| | - E Roh
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University, Seoul, Republic of Korea
| | - H J Kim
- Department of Family Medicine, Jeju National University School of Medicine, Jeju, Republic of Korea
| | - S G Lee
- Department of Physical & Rehabilitation Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - B J Kim
- Department of Psychiatry, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - M J Kim
- East-West Medical Research Institute, Kyung Hee University, Seoul, Republic of Korea
| | - C W Won
- Department of Family Medicine, Kyung Hee University Medical Center, kyungheedaero 23, dongdaemun-gu, 02447, Seoul, Republic of Korea; Elderly Frailty Research Center, Department of Family Medicine, Kyung Hee University College of Medicine, kyungheedaero 23, dongdaemun-gu, 02447, Seoul, Republic of Korea.
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12
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Bak G, Choi JH, Jang HI, Jang JS, Jeon SH, Joo KK, Ju K, Jung DE, Kim JG, Kim JH, Kim JY, Kim SB, Kim SY, Kim W, Kwon E, Lee DH, Lee HG, Lee YC, Lim IT, Moon DH, Pac MY, Park YS, Rott C, Seo H, Seo JW, Seo SH, Shin CD, Yang JY, Yoo J, Yu I. Measurement of Reactor Antineutrino Oscillation Amplitude and Frequency at RENO. Phys Rev Lett 2018; 121:201801. [PMID: 30500262 DOI: 10.1103/physrevlett.121.201801] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/13/2018] [Indexed: 06/09/2023]
Abstract
The RENO experiment reports more precisely measured values of θ_{13} and |Δm_{ee}^{2}| using ∼2200 live days of data. The amplitude and frequency of reactor electron antineutrino (ν[over ¯]_{e}) oscillation are measured by comparing the prompt signal spectra obtained from two identical near and far detectors. In the period between August 2011 and February 2018, the far (near) detector observed 103 212 (850 666) ν[over ¯]_{e} candidate events with a background fraction of 4.8% (2.0%). A clear energy and baseline dependent disappearance of reactor ν[over ¯]_{e} is observed in the deficit of the measured number of ν[over ¯]_{e}. Based on the measured far-to-near ratio of prompt spectra, we obtain sin^{2}2θ_{13}=0.0896±0.0048(stat)±0.0047(syst) and |Δm_{ee}^{2}|=[2.68±0.12(stat)±0.07(syst)]×10^{-3} eV^{2}.
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Affiliation(s)
- G Bak
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - J H Choi
- Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
| | - H I Jang
- Department of Fire Safety, Seoyeong University, Gwangju 61268, Korea
| | - J S Jang
- GIST College, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - S H Jeon
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - K K Joo
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - K Ju
- Department of Physics, KAIST, Daejeon 34141, Korea
| | - D E Jung
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J G Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J H Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J Y Kim
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - S B Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - S Y Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - W Kim
- Department of Physics, Kyungpook National University, Daegu 41566, Korea
| | - E Kwon
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - D H Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - H G Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - Y C Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - I T Lim
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - D H Moon
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - M Y Pac
- Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
| | - Y S Park
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - C Rott
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - H Seo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - J W Seo
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - S H Seo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - C D Shin
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - J Y Yang
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - J Yoo
- Institute for Basic Science, Daejeon 34047, Korea
- Department of Physics, KAIST, Daejeon 34141, Korea
| | - I Yu
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
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13
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Nassar HM, Park YS, Tekian A. Comparison of weighted and composite scores for pre-clinical dental learners. Eur J Dent Educ 2018; 22:192-197. [PMID: 29227014 DOI: 10.1111/eje.12313] [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] [Accepted: 11/06/2017] [Indexed: 06/07/2023]
Abstract
PURPOSE The weighted mean (WM) method for combining scores of assessment components can provide outcomes with biased reliability and score precision. The objective of this study was to compare the traditional WM with another method utilising the composite score (CS) principle for combining scores of a final summative assessment exercise for a pre-clinical dental course. METHODS Data were collected from the final examination of third-year Preclinical Operative and Esthetic Dentistry course consisting of 3 parts: practical competency, objective structured practical examination and a written examination with weights of 33%, 17% and 50%, respectively. Scores from the 3 components were combined using the WM and CS methods. Weighted kappa was used to compare both approaches for agreement, and students' ranks were also compared. RESULTS Combining scores using CS scheme produced lower scores overall compared to WM with more apparent effect for the male group. Agreement between WM and CS was moderate (κ = 0.44) with major differences between students' ranks across the 2 modalities as only 21% of the cohort retained their ranks. CONCLUSION The CS method produced more reliable scores, resulting in moderate agreement with the WM and major shift in students' ranks. These findings necessitate further validity considerations before implementing the CS method and call for further studies that examine the consequences of composite measures in dental education.
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Affiliation(s)
- H M Nassar
- Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Y S Park
- Department of Medical Education, College of Medicine, University of Illinois, Chicago, IL, USA
| | - A Tekian
- Department of Medical Education, College of Medicine, University of Illinois, Chicago, IL, USA
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14
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Kim Y, Cho JY, Oh SW, Kang M, Lee SE, Jung E, Park YS, Lee J. Globular adiponectin acts as a melanogenic signal in human epidermal melanocytes. Br J Dermatol 2018; 179:689-701. [PMID: 29485733 DOI: 10.1111/bjd.16488] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/19/2018] [Indexed: 12/30/2022]
Abstract
BACKGROUND Adiponectin is an adipocyte-derived cytokine that circulates as a full-length protein and a fragment containing the globular domain of adiponectin (gAd). A recent study has reported the antimelanogenic effects of full-length adiponectin. OBJECTIVES To examine the involvement of gAd in melanogenesis and its mechanisms of action. METHODS The effects of gAd on melanogenesis and its mechanisms of action were investigated in human epidermal melanocytes and reconstructed epidermis, including melanin content, cellular tyrosinase activity, cyclic adenosine monophosphate (cAMP) production and protein kinase A (PKA) activity, expression and phosphorylation of signalling molecules. RESULTS Exogenous gAd increased melanin content, and the mRNA levels of microphthalmia-associated transcription factor (MITF) and its downstream genes TRP1, but not TRP2, were increased by gAd. However, cAMP production and PKA activity were not affected by gAd. Moreover, attempts to elucidate the underlying mechanism behind the gAd-mediated effect revealed that gAd could regulate melanogenesis by upregulating MITF through phosphorylation of the cAMP response element-binding protein (CREB). In addition, upregulation of MITF was mediated by activation of adenosine monophosphate-activated protein kinase (AMPK)-p38 mitogen-activated protein kinase (MAPK) signalling. Taken together, these findings indicate that promotion of melanogenesis by gAd occurs through increased expression of MITF, which is mediated by activation of the AMPK-p38 MAPK-CREB pathway. CONCLUSIONS These findings suggest that gAd contributes to epidermal homeostasis via its effect on melanocyte biology, and products of adipose tissue could affect epidermal biology.
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Affiliation(s)
- Y Kim
- Soonchunhyang Institute of Medi-bio Science, Soonchunhyang University, Cheonan City, 311-51, Chungcheongnam Do, Republic of Korea
| | - J Y Cho
- Department of Integrative Biotechnology and Biocosmetics Research Center, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City, 164-19, Gyunggi Do, Republic of Korea
| | - S W Oh
- Department of Integrative Biotechnology and Biocosmetics Research Center, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City, 164-19, Gyunggi Do, Republic of Korea
| | - M Kang
- Department of Integrative Biotechnology and Biocosmetics Research Center, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City, 164-19, Gyunggi Do, Republic of Korea
| | - S E Lee
- Department of Integrative Biotechnology and Biocosmetics Research Center, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City, 164-19, Gyunggi Do, Republic of Korea
| | - E Jung
- Biospectrum Life Science Institute, Seongnam City, 132-16, Gyunggi Do, Republic of Korea
| | - Y S Park
- Department of Microbiology, School of Medicine, Kyung Hee University, 024-53, Seoul, Republic of Korea
| | - J Lee
- Department of Integrative Biotechnology and Biocosmetics Research Center, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City, 164-19, Gyunggi Do, Republic of Korea
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15
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Hwang YJ, Kim N, Lee HS, Lee JB, Choi YJ, Yoon H, Shin CM, Park YS, Lee DH. Reversibility of atrophic gastritis and intestinal metaplasia after Helicobacter pylori eradication - a prospective study for up to 10 years. Aliment Pharmacol Ther 2018; 47:380-390. [PMID: 29193217 DOI: 10.1111/apt.14424] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [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] [Received: 07/10/2017] [Revised: 07/31/2017] [Accepted: 10/27/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Atrophic gastritis and intestinal metaplasia are premalignant conditions for gastric cancer. Their reversibility by Helicobacter pylori eradication remains controversial. AIM To evaluate the reversibility of atrophic gastritis and intestinal metaplasia by H. pylori eradication with long-term follow-up. METHODS 598 subjects were prospectively enrolled and followed for up to 10 years. They were categorised as H. pylori-negative (n = 65), H. pylori non-eradicated (n = 91), and H. pylori-eradicated (n = 442). Histological assessment was performed for antrum and corpus by Sydney classification. RESULTS Histological follow-up was performed regularly at 1, 2, 3-4 and ≥5 years, with mean follow-up of 1.07 ± 0.21, 2.29 ± 0.83, 3.93 ± 1.02, and 6.45 ± 1.28 years, respectively. Atrophic gastritis in antrum and corpus gradually and significantly (both P < .05 for all timepoints) improved only in the H. pylori-eradicated group compared to that at baseline. Significant difference in atrophic gastritis between H. pylori-eradicated and H. pylori-negative groups disappeared from 1-year follow-up. Similarly, intestinal metaplasia in antrum and corpus improved significantly (both P < .05 for all timepoints) only in the H. pylori-eradicated group in comparison with that at baseline. Significant difference in intestinal metaplasia between H. pylori-eradicated and H. pylori-negative groups disappeared from ≥5 years of follow-up in the antrum and from 3 years of follow-up in the corpus. CONCLUSION H. pylori eradication may be a preventative strategy for intestinal-type gastric cancer by regression of atrophic gastritis and intestinal metaplasia.
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Affiliation(s)
- Y-J Hwang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - N Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea.,Department of Internal Medicine and Institute of Liver Research, Seoul National University College of Medicine, Seoul, South Korea
| | - H S Lee
- Department of Pathology, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - J B Lee
- Division of Statistics in Medical Research Collaborating Center, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - Y J Choi
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - H Yoon
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - C M Shin
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - Y S Park
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - D H Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea.,Department of Internal Medicine and Institute of Liver Research, Seoul National University College of Medicine, Seoul, South Korea
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Kim S, Won CW, Kim BS, Kim S, Yoo J, Byun S, Jang HC, Cho BL, Son SJ, Lee JH, Park YS, Choi KM, Kim HJ, Lee SG. EuroQol Visual Analogue Scale (EQ-VAS) as a Predicting Tool for Frailty in Older Korean Adults: The Korean Frailty an Aging Cohort Study (KFACS). J Nutr Health Aging 2018; 22:1275-1280. [PMID: 30498837 DOI: 10.1007/s12603-018-1077-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVES This study was conducted to determine the cutoff value and efficacy of the EuroQol Visual Analogue Scale (EQ-VAS) for predicting frailty. DESIGN The EQ-VAS medians (Interquartile Range) were compared and analyzed against the FFI. PARTICIPANTS The subjects were 1471 older adults aged 70 to 84 years who had completed both EQ-VAS and Fried Frailty index (FFI) in the first baseline year (2016) of the Korean Frailty and Aging Cohort Study. RESULTS Of the 1471 subjects,600 were classified as robust, 716 as pre-frail, and 155 as frail. The median EQ-VAS scores were 80.00 (20.00) for robust, 75.00 (25.00) for pre-frail, and 60.00 (25.00) for frail subjects.The medians of all five components of the FFI, weight loss (70.00 vs. 80.00), grip strength (70.00 vs. 80.00), exhaustion (70.00 vs. 80.00), walking velocity (70.00 vs. 80.00), and physical activity (70.00 vs. 80.00), were lower in the abnormal groups. We tested the efficacy of EQ-VAS as a diagnostic tool to predict frailty, and the area under the curve of EQ-VAS was 0.71 withthe optimal cut-off value of 72. CONCLUSION EQ-VAS presented negative correlation with FFI, and the optimal cut off value for frailty was 72. These results suggest that EQ-VAS is a valuable tool for assessing frailty andmay be a good predictor of frailty in Korean elderly population.
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Affiliation(s)
- S Kim
- Chang Won Won, MD. Ph.D, Elderly Frailty Research Center, Department of Family Medicine, Kyung Hee University College of Medicine, Kyungheedaero 23, Dongdaemun-gu, Seoul, 02447 Republic of Korea.Tel: +82 2 958 8700; E-mail:
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Kim ST, Kim SY, Klempner SJ, Yoon J, Kim N, Ahn S, Bang H, Kim KM, Park W, Park SH, Park JO, Park YS, Lim HY, Lee SH, Park K, Kang WK, Lee J. Rapamycin-insensitive companion of mTOR (RICTOR) amplification defines a subset of advanced gastric cancer and is sensitive to AZD2014-mediated mTORC1/2 inhibition. Ann Oncol 2017; 28:547-554. [PMID: 28028034 DOI: 10.1093/annonc/mdw669] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [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: 01/19/2023] Open
Abstract
Background Targeting oncogenic genomic aberrations is an established therapeutic strategy in multiple tumor types. Molecular classification has uncovered a number of novel targets, and rapamycin-insensitive companion of mTOR (RICTOR) amplification has been identified in lung cancer. Further investigation assessing the therapeutic potential of RICTOR amplification as a novel target across advanced cancers is needed. Patients and methods Tumor samples from 640 patients with metastatic solid tumors, primarily gastrointestinal and lung cancers were prospectively subjected to a next-generation sequencing (NGS) assay to identify molecular targets. Samples with NGS-detected RICTOR amplification were confirmed with FISH. A RICTOR-amplified patient-derived cell (PDC) line was generated and used to investigate the effectiveness of selective AKT, mTORC1, and mTORC1/2 inhibition. Results NGS identified 13 (2%) of 640 patients with RICTOR-amplified tumors (6 gastric, 3 NSCLC, 1 SCLC, 1 CRC, 1 sarcoma, 1 MUO). Of the 13 patients, seven patients had RICTOR protein overexpression by IHC. The prevalence of RICTOR amplification in gastric cancer by NGS was 3.8% (6/160). FISH testing confirmed amplification (RICTOR/control >2) in 5/13 (38%) of samples, including four gastric cancers and one lung cancer. Treatment of a RICTOR amplified PDC with a selective AKT (AZD5363), selective mTORC1 (everolimus), dual mTORC1/2 (AZD2014), and the multi-target kinase inhibitor pazopanib demonstrated preferential sensitivity to the mTORC1/2 inhibitor (AZD2014). Knockdown of RICTOR reversed PDC sensitivity to AZD2014, validating the importance of RICTOR amplification to the PDC line. Conclusions RICTOR amplification is a rare but therapeutically relevant genomic alteration across solid tumors. Our results support further pre-clinical and clinical investigation with AZD2014 in RICTOR amplified gastric cancer and highlights the importance of genomic profiling.
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Affiliation(s)
- S T Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S Y Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S J Klempner
- The Angeles Clinic and Research Institute, Los Angeles, USA.,Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, USA
| | - J Yoon
- Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
| | - N Kim
- Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
| | - S Ahn
- Samsung Genome Institute, Samsung Medical Center, Seoul, Korea.,Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H Bang
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,The Innovative Cancer Medicine Institute, Samsung Medical Center, Seoul, Korea
| | - K-M Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,The Innovative Cancer Medicine Institute, Samsung Medical Center, Seoul, Korea
| | - W Park
- Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
| | - S H Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J O Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Y S Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H Y Lim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S H Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,The Innovative Cancer Medicine Institute, Samsung Medical Center, Seoul, Korea
| | - W K Kang
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Kim JE, Kim KK, Kim SY, Lee J, Park SH, Park JO, Park YS, Lim HY, Kang WK, Kim ST. MAP2K1 Mutation in Colorectal Cancer Patients: Therapeutic Challenge Using Patient-Derived Tumor Cell Lines. J Cancer 2017; 8:2263-2268. [PMID: 28819429 PMCID: PMC5560144 DOI: 10.7150/jca.19582] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 02/09/2017] [Accepted: 05/18/2017] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND: The MAP2K1 K57T mutation is known to be a potential mechanism of primary and secondary resistance to EGFR inhibitors in metastatic colorectal cancer (CRC) and has also been reported to promote resistance to BRAF and MEK inhibitors. It is important to overcome therapeutic resistance to EGFR inhibitors to improve the treatment outcomes of metastatic CRC. METHODS: We established patient-derived tumor cells (PDCs) from metastatic lesions that newly appeared during treatment with a BRAF inhibitor (LGX-818) plus an EGFR inhibitor (cetuximab) in a patient with BRAF-mutant CRC. To investigate therapeutic options to overcome acquired resistance due to MAP2K1 mutation in BRAF-mutant CRC, we performed cell viability assays using the PDCs. RESULTS: We tested whether the PDCs were resistant to an EGFR inhibitor (cetuximab) and a BRAF inhibitor (sorafenib) as these cells were established at the time of resistance to the EGFR plus BRAF inhibitors. Moreover, the anti-tumor effect of AZD6244 (MEK inhibitor) was evaluated because PDCs harbored a MAP2K1 mutation at the time of resistance to the EGFR plus BRAF inhibitors. MTT proliferation assays showed that monotherapy with cetuximab, sorafenib, or AZD6244 did not suppress cell viability. We next tested viability of the PDCs to combination treatment with cetuximab plus AZD6244 and sorafenib plus AZD6244. Proliferation of PDCs was significantly inhibited by sorafenib and AZD6244, but not by cetuximab plus AZD6244. Investigation of the combined effect of sorafenib and AZD6244 using the calculated combination index (CI) showed synergistic effects of sorafenib and AZD6244 in combination therapy applied to PDCs with the MAP2K1 K57T mutation. CONCLUSION: Our results suggest that combination treatment with BRAF and MEK inhibitors might be a novel treatment strategy for MAP2K1 K57T-mutant CRC. This finding will be helpful to guide treatment of patients with CRC that is resistant to EGFR inhibitors.
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Affiliation(s)
- J E Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K K Kim
- Department of Molecular Cell Biology, Institute of Basic Science, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 440-746, Korea
| | - S Y Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S H Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J O Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Y S Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H Y Lim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - W K Kang
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S T Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Park YS, Lee SH, Lim CK, Choi HW, An JH, Park CW, Lee HS, Lee JS, Seo JT. Paternal age as an independent factor does not affect embryo quality and pregnancy outcomes of testicular sperm extraction-intracytoplasmic sperm injection in azoospermia. Andrologia 2017; 50. [PMID: 28703337 DOI: 10.1111/and.12864] [Citation(s) in RCA: 10] [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] [Accepted: 04/27/2017] [Indexed: 12/25/2022] Open
Abstract
This study was performed to evaluate the independent influence of paternal age affecting embryo development and pregnancy using testicular sperm extraction (TESE)-intracytoplasmic sperm injection (ICSI) in obstructive azoospermia (OA) and nonobstructive azoospermia (NOA). Paternal patients were divided into the following groups: ≤30 years, 31-35 years, 36-40 years, 41-45 years and ≥46 years. There were no differences in the rates of fertilisation or embryo quality according to paternal and maternal age. However, clinical pregnancy and implantation rates were significantly lower between those ≥46 years of paternal age compared with other age groups. Fertilisation rate was higher in the OA than the NOA, while embryo quality, pregnancy and delivery results were similar. Clinical pregnancy and implantation rates were significantly lower for patients ≥46 years of paternal age compared with younger age groups. In conclusion, fertilisation using TESE in azoospermia was not affected by the independent influence of paternal age; however, as maternal age increased concomitantly with paternal age, rates of pregnancy and delivery differed between those with paternal age <41 years and ≥46 years. Therefore, paternal age ≥46 years old should be considered when applying TESE-ICSI in cases of azoospermia, and patients should be advised of the associated low pregnancy rates.
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Affiliation(s)
- Y S Park
- Laboratory of Reproductive Medicine, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea
| | - S H Lee
- Laboratory of Reproductive Medicine, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea.,Division of Developmental Biology and Physiology, School of Biosciences and Chemistry, Sungshin Women's University, Seoul, Korea
| | - C K Lim
- Laboratory of Reproductive Medicine, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea
| | - H W Choi
- Laboratory of Reproductive Medicine, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea
| | - J H An
- Laboratory of Reproductive Medicine, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea
| | - C W Park
- Department of Obstetrics and Gynecology, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea
| | - H S Lee
- Department of Urology, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea
| | - J S Lee
- Department of Urology, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea
| | - J T Seo
- Department of Urology, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea
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Yousef MK, Alshawwa L, Tekian A, Park YS. Challenging the arbitrary cutoff score of 60%: Standard setting evidence from preclinical Operative Dentistry course. Med Teach 2017; 39:S75-S79. [PMID: 28120635 DOI: 10.1080/0142159x.2016.1254752] [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] [Indexed: 06/06/2023]
Abstract
INTRODUCTION This paper conducted standard setting (SS) (Angoff and Hofstee methods) to determine cutoff scores for summative examinations and to compare the derived passing levels to the existing fixed passing score of 60% in the Faculty of Dentistry at King Abdulaziz University. METHODS Historic performance data for final examinations in preclinical Operative Dentistry course were used by four raters to conduct both Angoff and Hofstee methods to determine the cut off scores for three academic years (2012, 2013, and 2014). RESULTS Both methods yielded higher than 60% cut off scores for each year. For the first examination of academic year 2012, the cutoff score was 64.75, while it was 63.5 for year 2013, and 66.75 for the last academic year of 2014. Hofstee scores were 64.5, 65.25, and 62.25 consecutively for years 2012 through 2014. CONCLUSIONS Using Angoff or Hofstee methods, yielded higher than the fixed 60% passing score currently used by the dental school. The use of Angoff method alone is encouraged as there were limitations to using the Hofstee method to determine the cut off score. This finding provides preliminary support to use evidence-based SS methods to determine the cutoff score for the whole Dentistry program.
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Affiliation(s)
- M K Yousef
- a Faculty of Dentistry , King Abdulaziz University , Jeddah , Saudi Arabia
| | - L Alshawwa
- b Faculty of Medicine , King Abdulaziz University , Jeddah , Saudi Arabia
| | - A Tekian
- c Medical Education Department , University of Illinois at Chicago , Chicago , IL , USA
| | - Y S Park
- c Medical Education Department , University of Illinois at Chicago , Chicago , IL , USA
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21
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Kim YW, Kim JH, Yoon SH, Lee JH, Lee CH, Shin CS, Park YS. Vertebral bone attenuation on low-dose chest CT: quantitative volumetric analysis for bone fragility assessment. Osteoporos Int 2017; 28:329-338. [PMID: 27480628 DOI: 10.1007/s00198-016-3724-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [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: 12/11/2015] [Accepted: 07/26/2016] [Indexed: 01/09/2023]
Abstract
UNLABELLED This study evaluated the use of low-dose chest computed tomography (LDCT) for detecting bone fragility. LDCT-measured vertebral bone attenuation by volumetric methods showed good correlation with bone mineral density (BMD) measured by dual-energy x-ray absorptiometry (DXA, and good diagnostic performance for identifying osteoporosis and compression fractures. The results of this study suggest the feasibility of obtaining comprehensive information on bone health in subjects undergoing LDCT. INTRODUCTION Osteoporosis is a prevalent but underdiagnosed disease that increases fracture risk. This study evaluated the utility of vertebral attenuation derived from low-dose chest computed tomography (LDCT) compared to dual-energy x-ray absorptiometry (DXA) for detecting bone fragility. METHODS A total of 232 subjects (78 men and 154 women) aged above 50 years who underwent both LDCT and DXA within 30 days were evaluated. LDCT-measured bone attenuation in Hounsfield units (HU) of four vertebrae (T4, T7, T10, and L1) was evaluated using volumetric methods for correlation with DXA-measured bone mineral density (BMD) and for the diagnosis of compression fractures, osteoporosis, and low BMD (osteoporosis or osteopenia) in men and women, with DXA measurements as the reference standard. RESULTS The average attenuation of the four vertebrae showed strong correlation with DXA-measured BMD of the lumbar spine (r = 0.726, p < 0.05). In receiver-operating characteristic (ROC) analyses, the area under the curve (AUC) across LDCT-measured thresholds of the average attenuation to distinguish compression fractures was 0.827, and a threshold of 129.5 HU yielded 90.9 % sensitivity and 64.4 % specificity. Similarly, average attenuation showed high AUCs and good diagnostic performance for detecting osteoporosis and low BMD in both men and women. Among 44 subjects with compression fractures, the average bone attenuation showed strong negative correlation with both the worst fracture grade (r = -0.525, p < 0.05) and cumulative fracture grade score (r = -0.633, p < 0.05). CONCLUSION LDCT-measured bone attenuation by volumetric methods showed good correlation with BMD measured by DXA and good diagnostic performance for identifying bone fragility.
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Affiliation(s)
- Y W Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Seoul National University, 101 Daehak-Ro, Jongno-Gu, Seoul, 110-744, Republic of Korea
| | - J H Kim
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - S H Yoon
- Department of Radiology, Institute of Radiation Medicine, Seoul National University Medical Research Center, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - J H Lee
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - C-H Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Seoul National University, 101 Daehak-Ro, Jongno-Gu, Seoul, 110-744, Republic of Korea
| | - C S Shin
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Y S Park
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Seoul National University, 101 Daehak-Ro, Jongno-Gu, Seoul, 110-744, Republic of Korea.
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Chung SP, Yune HY, Park YS, You JS, Hong JH, Kong T, Park JW, Chung HS, Park I. Usefulness of mean platelet volume as a marker for clinical outcomes after out-of-hospital cardiac arrest: a retrospective cohort study. J Thromb Haemost 2016; 14:2036-2044. [PMID: 27437641 DOI: 10.1111/jth.13421] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 11/08/2015] [Accepted: 06/27/2016] [Indexed: 01/06/2023]
Abstract
Essentials It is unknown whether mean platelet volume (MPV) estimates outcomes after cardiac arrest (CA). We investigated whether MPV was associated with 30-day neurologic outcome and mortality after CA. Elevated MPV at admission was associated with poor neurological outcomes and mortality at 30 days. Identifying levels of MPV is helpful for estimating disease severity among resuscitated patients. SUMMARY Background Whole-body ischemia followed by reperfusion during cardiac arrest and after return of spontaneous circulation (ROSC) triggers systemic sterile inflammatory responses, inducing a sepsis-like state during post-cardiac arrest syndrome. Activated platelets are enlarged, and contain vasoactive and prothrombic factors that aggravate systemic inflammation and endothelial dysfunction. Objectives To investigate whether mean platelet volume (MPV) is useful as a marker for early mortality and neurologic outcomes in patients who achieve ROSC after out-of-hospital cardiac arrest (OHCA). Methods OHCA records from the Emergency Department Cardiac Arrest Registry were retrospectively analyzed. Patients who survived for > 24 h after ROSC were included. We evaluated mortality and cerebral performance category scores after 30 days. Results We analyzed records from 184 patients with OHCA. Increased 30-day mortality among patients who achieved ROSC after OHCA was associated with MPV at admission (hazard ratio [HR] 1.36; 95% confidence interval [CI] 1.06-1.75). An elevated MPV at admission was also associated with poor neurologic outcomes (HR 1.28; 95% CI 1.06-1.55). Conclusions An elevated MPV was independently associated with increased 30-day mortality, with the highest discriminative value being obtained upon admission after OHCA. An elevated MPV on admission was associated with poor neurologic outcomes. High MPVs are helpful for estimating 30-day mortality and neurologic outcomes among patients who achieve ROSC after OHCA.
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Affiliation(s)
- S P Chung
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - H Y Yune
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Y S Park
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - J S You
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea.
| | - J H Hong
- Department of Research Affairs, Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - T Kong
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - J W Park
- Department of Emergency Medicine, Kosin University College of Medicine, Busan, Korea
| | - H S Chung
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - I Park
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
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Leontowicz M, Leontowicz H, Jesion I, Bielecki W, Najman K, Latocha P, Park YS, Gorinstein S. Actinidia arguta supplementation protects aorta and liver in rats with induced hypercholesterolemia. Nutr Res 2016; 36:1231-1242. [PMID: 27865618 DOI: 10.1016/j.nutres.2016.09.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 09/29/2016] [Indexed: 12/11/2022]
Abstract
There are no published results focusing on the study of hardy kiwifruit as a supplementation to the atherogenic diet. We hypothesized that hardy kiwifruit (Actinidia arguta (A. arguta)) from Poland possess better pro-healthy action than two Asian varieties (Hayward and Bidan). We tested this hypothesis by measuring the metabolic reactions of rats loaded with 1% cholesterol and supplemented with 5% of hardy kiwifruit (A. arguta), Hayward, or Bidan in their diets. The experiment was performed on 71 male Wistar rats. Cholesterol showed a significant impact on the rise of liver somatic index, while lipid profile improved by decreasing the levels of TC, LDL-C, TC/HDL-C, AI, TG, and increasing HDL-C in the serum of rats (P<.05). Total plasma antioxidant capacity determined by ABTS, FRAP, and DPPH assays was increased. ALP in rat serum was higher in groups receiving cholesterol diets and kiwifruit. A decrease in fibrinogen as well as prolonged prothrombin time and a reduction of the MPO in serum were estimated. The smallest percentage of lesions in the aortic arch was in the ChGeneva, ChWeiki, and ChAnna. Similarly, the smallest fatty liver disease was recorded in the ChGeneva and ChAnna groups. The distribution of lipids in the liver from these groups had a character of "mosaic," in hardy/mini kiwifruit (Jumbo), Hayward, and Bidan was distributed uniformly. The longest villi were in ChWeiki, and significantly lower in ChHayward and ChBidan. The present results support our hypothesis that A. arguta showed better pro-health impacts in rats loaded with cholesterol than Hayward and Bidan kiwifruit, and, for the first time, the positive nutritional effects of supplemented A. arguta for hypercholesterolemia are noted.
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Affiliation(s)
- Maria Leontowicz
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Warsaw, Poland.
| | - Hanna Leontowicz
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Iwona Jesion
- Department of Biology of Animal Environment, Faculty of Animal Sciences, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Wojciech Bielecki
- Department of Pathology and Veterinary Diagnostics, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Katarzyna Najman
- Department of Functional Food and Commodities, Faculty of Human Nutrition and Consumption, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Piotr Latocha
- Department of Environmental Protection, Faculty of Horticulture, Biotechnology, and Landscape Architecture (SGGW), Warsaw, Poland
| | - Yong-Seo Park
- Department of Horticultural Science, Mokpo National University, Muan, Jeonnam, South Korea
| | - Shela Gorinstein
- The Institute for Drug Research, School of Pharmacy, The Hebrew University, Hadassah Medical School, Jerusalem 91120, Israel.
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Lee JK, Lee J, Park SS, Heo EY, Park YS, Lee CH, Lee SM, Yoon HI, Yim JJ, Yoo CG, Chung HS, Kim YW, Han SK, Kim DK. Effect of inhalers on the development of haemoptysis in patients with non-cystic fibrosis bronchiectasis. Int J Tuberc Lung Dis 2015; 18:363-70. [PMID: 24670577 DOI: 10.5588/ijtld.13.0255] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The association of inhaler use with haemoptysis has rarely been reported in patients with non-cystic fibrosis (CF) bronchiectasis. OBJECTIVE To elucidate the effect of inhaler use on the development of haemoptysis in patients with non-CF bronchiectasis. METHODS In a case-crossover study of 192 non-CF bronchiectasis patients with a history of haemoptysis and inhaler use, the risk of haemoptysis associated with the use of inhalers was elucidated. Two inhaled corticosteroids/long-acting β₂-agonists (ICS/LABA), one long-acting muscarinic antagonist and one short-acting β₂-agonist (SABA) were evaluated. The case and control periods were defined respectively as 030 and 180210 days before haemoptysis. RESULTS The risk of haemoptysis during the case period was 3.51 times higher than during the control period with any use of inhalers (95%CI 1.966.28). The results of clinically significant haemoptysis showed good agreement with those of total events. These associations were consistent with the sensitivity analyses. In the sub-analysis according to inhaler type, ICS/LABA and SABA were significantly associated with an increased risk of haemoptysis (aOR 2.62, 95%CI 1.255.45; aOR 2.51, 95%CI 2.235.15). CONCLUSIONS In patients with non-CF bronchiectasis, the use of inhalers, especially including 2-agonist, was associated with an increased risk of haemoptysis.
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Affiliation(s)
- J-K Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - J Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S S Park
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - E Y Heo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Y S Park
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - C H Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S-M Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H I Yoon
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea
| | - J-J Yim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - C-G Yoo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H S Chung
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Y W Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S K Han
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - D K Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Republic of Korea
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Lim SH, Kim TW, Hong YS, Han SW, Lee KH, Kang HJ, Hwang IG, Lee JY, Kim HS, Kim ST, Lee J, Park JO, Park SH, Park YS, Lim HY, Jung SH, Kang WK. A randomised, double-blind, placebo-controlled multi-centre phase III trial of XELIRI/FOLFIRI plus simvastatin for patients with metastatic colorectal cancer. Br J Cancer 2015; 113:1421-6. [PMID: 26505681 PMCID: PMC4815882 DOI: 10.1038/bjc.2015.371] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [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: 06/23/2015] [Revised: 09/22/2015] [Accepted: 10/05/2015] [Indexed: 12/19/2022] Open
Abstract
Background: The purpose of this randomised phase III trial was to evaluate whether the addition of simvastatin, a synthetic 3-hydroxy-3methyglutaryl coenzyme A reductase inhibitor, to XELIRI/FOLFIRI chemotherapy regimens confers a clinical benefit to patients with previously treated metastatic colorectal cancer. Methods: We undertook a double-blind, placebo-controlled phase III trial of 269 patients previously treated for metastatic colorectal cancer and enrolled in 5 centres in South Korea. Patients were randomly assigned (1 : 1) to one of the following groups: FOLFIRI/XELIRI plus simvastatin (40 mg) or FOLFIRI/XELIRI plus placebo. The FOLFIRI regimen consisted of irinotecan at 180 mg m−2 as a 90-min infusion, leucovorin at 200 mg m−2 as a 2-h infusion, and a bolus injection of 5-FU 400 mg m−2 followed by a 46-h continuous infusion of 5-FU at 2400 mg m−2. The XELIRI regimen consisted of irinotecan at 250 mg m−2 as a 90-min infusion with capecitabine 1000 mg m−2 twice daily for 14 days. The primary end point was progression-free survival (PFS). Secondary end points included response rate, duration of response, overall survival (OS), time to progression, and toxicity. Results: Between April 2010 and July 2013, 269 patients were enrolled and assigned to treatment groups (134 simvastatin, 135 placebo). The median PFS was 5.9 months (95% CI, 4.5–7.3) in the XELIRI/FOLFIRI plus simvastatin group and 7.0 months (95% CI, 5.4–8.6) in the XELIRI/FOLFIRI plus placebo group (P=0.937). No significant difference was observed between the two groups with respect to OS (median, 15.9 months (simvastatin) vs 19.9 months (placebo), P=0.826). Grade ⩾3 nausea and anorexia were noted slightly more often in patients in the simvastatin arm compared with with the placebo arm (4.5% vs 0.7%, 3.0% vs 0%, respectively). Conclusions: The addition of 40 mg simvastatin to the XELIRI/FOLFIRI regimens did not improve PFS in patients with previously treated metastatic colorectal cancer nor did it increase toxicity.
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Affiliation(s)
- S H Lim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - T W Kim
- Division of Hematology-Oncology, Department of Medicine, Asan Medical Center, Seoul, South Korea
| | - Y S Hong
- Division of Hematology-Oncology, Department of Medicine, Asan Medical Center, Seoul, South Korea
| | - S-W Han
- Division of Hematology-Oncology, Department of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - K-H Lee
- Division of Hematology-Oncology, Department of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - H J Kang
- Division of Hematology-Oncology, Department of Medicine, Korea Cancer Center Hospital, Seoul, South Korea
| | - I G Hwang
- Division of Hematology-Oncology, Department of Medicine, Chungang University Hospital, Seoul, South Korea
| | - J Y Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - H S Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S T Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J O Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S H Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Y S Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - H Y Lim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S-H Jung
- Department of Biostatistics and Bioinformatics, Duke University, Durham, NC, USA.,Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - W K Kang
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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Park YS, Im MH, Ham KS, Kang SG, Park YK, Namiesnik J, Leontowicz H, Leontowicz M, Trakhtenberg S, Gorinstein S. Quantitative assessment of the main antioxidant compounds, antioxidant activities and FTIR spectra from commonly consumed fruits, compared to standard kiwi fruit. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2015.03.057] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Lee HJ, Kim JT, Shin MH, Choi DY, Park YS, Hong JT. The ossification pattern in paediatric occipito-cervical spine: is it possible to estimate real age? Clin Radiol 2015; 70:835-43. [PMID: 25979852 DOI: 10.1016/j.crad.2015.04.003] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 03/03/2015] [Accepted: 04/10/2015] [Indexed: 11/30/2022]
Abstract
AIM To retrospectively analyse the synchondrosis from the occipital bone to the whole cervical spine and determine the feasibility and validity of age estimation using computed tomography (CT) images. MATERIAL AND METHODS A total of 231 cervical spine or neck CT images of young children (<7 years of age) were examined. Twelve ossification centres were assessed (occiput: n = 2; atlas: n = 2; axis, n = 6; whole sub-axial vertebra: n = 2), and the ossification process was graded as open (O, fully lucent), osseous bridging (B, partially ossified), and fusion (F, totally ossified). After the first analysis was completed, the resulting chronological chart was used to estimate the age of 10 new cases in order to confirm the usefulness of the chart. RESULTS Infancy was easily estimated using the sub-axial or C2 posterior ossification centres, while the posterior occipital regions provided good estimation of age between 1-2 years. The most difficult period for accurate age estimation was between 2-4 years. However, the C2 anterior (neurocentral ossification) and C1 posterior regions did yield information to help determine the age around 3 years. The anterior occipital region was useful for age estimation between 4-5 years, and the C1-anterior region was potentially useful to help decide among the other parameters. The test for age estimation (TAE) had a very high ICC score (0.973) among the three observers. CONCLUSION Segmentalised analysis can enhance the ability to estimate real age, at least by the year. The analysis of the occipital bone made a strong contribution to the usefulness of the chorological chart. An organised chronological chart can provide readily available information for age estimation, and the primary application of the above data (TAE) demonstrated the validity of this approach.
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Affiliation(s)
- H J Lee
- Department of Neurosurgery, Incheon St Mary's Hospital, The Catholic University of Korea, Republic of Korea
| | - J T Kim
- Department of Neurosurgery, Incheon St Mary's Hospital, The Catholic University of Korea, Republic of Korea.
| | - M H Shin
- Department of Neurosurgery, Incheon St Mary's Hospital, The Catholic University of Korea, Republic of Korea
| | - D Y Choi
- Department of Neurosurgery, Incheon St Mary's Hospital, The Catholic University of Korea, Republic of Korea
| | - Y S Park
- Department of Neurosurgery, Incheon St Mary's Hospital, The Catholic University of Korea, Republic of Korea
| | - J T Hong
- Department of Neurosurgery, St Vincent's Hospital, The Catholic University of Korea, Republic of Korea
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Park YS, Cvikrová M, Martincová O, Ham KS, Kang SG, Park YK, Namiesnik J, Rombolà AD, Jastrzebski Z, Gorinstein S. In vitro antioxidative and binding properties of phenolics in traditional, citrus and exotic fruits. Food Res Int 2015; 74:37-47. [PMID: 28412001 DOI: 10.1016/j.foodres.2015.04.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [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: 01/24/2015] [Revised: 03/26/2015] [Accepted: 04/12/2015] [Indexed: 11/27/2022]
Abstract
Many polyphenols bind proteins, therefore our research was focused on the potential of protein binding to polyphenols of investigated fruits and their health-related effects. The contents of polyphenols and related antioxidant activities of traditional, citrus and exotic fruits were compared. The presence of polyphenols (flavonoids and phenolic acids) in the investigated samples and their interaction with human serum albumin (HSA) was studied by HPLC, Fourier Transform Infrared (FT-IR) and three dimensional fluorescence spectroscopy (3D-FL). The highest levels of polyphenols, antioxidant and binding capacities were found in red and blond grapefruits (citrus group), followed by strawberries and apples (traditional group) and mangosteen and kiwi fruit (exotic fruit), which also contained the highest levels of protocatechuic, p-coumaric, ferulic acids and quercetin. In conclusion, for the first time, the interaction of the polyphenols with human serum albumin was evaluated by fluorometry/FTIR. The obtained binding profiles allowed the comparison of three different groups of fruits. A mixture of these fruits can be recommended for consumption.
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Affiliation(s)
- Yong-Seo Park
- Department of Horticultural Science, Mokpo National University, Muan, Jeonnam, Republic of Korea.
| | - Milena Cvikrová
- Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Prague 6, Czech Republic
| | - Olga Martincová
- Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Prague 6, Czech Republic
| | - Kyung-Sik Ham
- Department of Food Engineering, Mokpo National University, Muan, Jeonnam, Republic of Korea
| | - Seong-Gook Kang
- Department of Food Engineering, Mokpo National University, Muan, Jeonnam, Republic of Korea
| | - Yang-Kyun Park
- Department of Food Engineering, Mokpo National University, Muan, Jeonnam, Republic of Korea
| | - Jacek Namiesnik
- Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology, 80 952 Gdańsk, Poland
| | | | - Zenon Jastrzebski
- Department of Pharmacology, National Medicines Institute, 00-725 Warsaw, Poland
| | - Shela Gorinstein
- The Institute for Drug Research, School of Pharmacy, The Hebrew University, Hadassah Medical School, Jerusalem 91120, Israel.
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Jung J, Kim MY, Lee HJ, Park YS, Lee SO, Choi SH, Kim YS, Woo JH, Kim SH. Comparison of computed tomographic findings in pulmonary mucormycosis and invasive pulmonary aspergillosis. Clin Microbiol Infect 2015; 21:684.e11-8. [PMID: 25882362 DOI: 10.1016/j.cmi.2015.03.019] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 03/17/2015] [Accepted: 03/25/2015] [Indexed: 10/23/2022]
Abstract
Because there are no available molecular markers for pulmonary mucormycosis (PM), which has low culture sensitivity, early diagnosis and treatment rely heavily on imaging modes such as computed tomography (CT). However, there are limited data comparing CT findings for PM with those for invasive pulmonary aspergillosis (IPA). Adult patients who met the modified criteria for proven and probable PM (over an 11-year period) and IPA (over a 6-year period, owing to the availability of the galactomannan assay) according to the modified European Organization for Research and Treatment of Cancer/Mycosis Study Group definitions were retrospectively enrolled. IPA cases were selected at a 1 : 4 (PM/IPA) ratio. Thoracic CT scans were reviewed by two experienced radiologists blinded to the patients' demographics and clinical outcomes. A total of 24 patients with PM, including 20 (83%) with proven PM and four (17%) with probable PM, and 96 patients with IPA, including 12 (13%) with proven IPA and 84 (87%) with probable IPA, were eventually analysed. The reverse halo sign was more common in patients with PM (54%) than in those with IPA (6%, p < 0.001), whereas some airway-invasive features, such as clusters of centrilobular nodules, peribronchial consolidations, and bronchial wall thickening, were more common in patients with IPA (IPA 52% vs. PM 29%, p 0.04; IPA 49% vs. PM 21%, p 0.01; IPA 34% vs. PM 4%, p 0.003, respectively). The reverse halo sign was more common, and airway-invasive features were less common, in patients with PM than in those with IPA. These findings may help physicians to initiate Zygomycetes-active antifungal treatment earlier.
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Affiliation(s)
- J Jung
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - M Y Kim
- Department of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - H J Lee
- Department of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y S Park
- Department of Pathology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-O Lee
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-H Choi
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y S Kim
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J H Woo
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-H Kim
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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Lee YK, Lee TS, Song IH, Jeong HY, Kang SJ, Kim MW, Ryu SH, Jung IH, Kim JS, Park YS. Inhibition of pulmonary cancer progression by epidermal growth factor receptor-targeted transfection with Bcl-2 and survivin siRNAs. Cancer Gene Ther 2015; 22:335-43. [DOI: 10.1038/cgt.2015.18] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 02/26/2015] [Accepted: 02/27/2015] [Indexed: 01/20/2023]
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Noh HM, Park YS, Lee J, Lee W. A cross-sectional study to examine the correlation between serum TSH levels and the osteoporosis of the lumbar spine in healthy women with normal thyroid function. Osteoporos Int 2015; 26:997-1003. [PMID: 25253541 DOI: 10.1007/s00198-014-2906-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Accepted: 09/15/2014] [Indexed: 10/24/2022]
Abstract
UNLABELLED We examined the association between serum TSH levels and osteoporosis of the lumbar spine in 756 Korean women aged 65 years or older with normal thyroid function. Low-normal serum TSH levels might be a potential risk factor for the osteoporosis in non-obese elderly women. INTRODUCTION We aimed to examine the association between serum thyroid-stimulating hormone (TSH) levels and osteoporosis of the lumbar spine in healthy elderly Korean women with normal thyroid function. METHODS In this cross-sectional study, we evaluated the correlations between serum TSH levels and the osteoporosis of the lumbar spine depending on the body mass index (BMI) in a total of 756 women aged 65 years or older who underwent bone mineral density (BMD) measurement and thyroid function test in a routine health screening examination at our medical institution. RESULTS After the adjustment of the age and BMI, there was a significant positive correlation between serum TSH level within normal range and the BMD of the lumbar spine (r = 0.165, P < 0.001). In the non-obese elderly women, multivariate-adjusted odds ratios (ORs) for the osteoporosis of the lumbar spine were significantly higher in the 1st and 2nd quartiles of serum TSH levels as compared with their 4th quartile (OR 2.169, 95% CI 1.128-4.171; and OR 2.122, 95% CI 1.123-4.007, respectively). In these women, there were dose-dependent inverse correlations between quartiles of serum TSH levels and the osteoporosis of the lumbar spine (P for trend, 0.008). In the obese women, however, there were no such correlations. CONCLUSIONS In conclusion, our results suggest that low-normal serum TSH levels might be a potential risk factor for the osteoporosis of the lumbar spine in non-obese elderly women. But further prospective, large-scale, randomized controlled studies are warranted to establish our results.
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Affiliation(s)
- H-M Noh
- Department of Family Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Republic of Korea
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Kim MJ, Park YS. 0355. Optimal chest compression technique for pediatric arrest victims. Intensive Care Med Exp 2014. [PMCID: PMC4797719 DOI: 10.1186/2197-425x-2-s1-p21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Kim TG, Park W, Choi DH, Kim SH, Kim HC, Lee WY, Park JO, Park YS. The adequacy of the distal resection margin after preoperative chemoradiotherapy for rectal cancer. Colorectal Dis 2014; 16:O257-63. [PMID: 24422744 DOI: 10.1111/codi.12554] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 10/20/2013] [Indexed: 02/08/2023]
Abstract
AIM The study aimed to determine the adequacy of the distal margin in patients having preoperative chemoradiotherapy (CRT) followed by restorative surgery for rectal cancer. METHOD A total of 368 patients with locally advanced rectal cancer treated for cure at our institution between July 1999 and March 2009 were included in the study. All underwent preoperative CRT and sphincter-sparing surgery. The distal margin and other factors were examined for their effect on recurrence and survival. The median duration of follow-up was 48 months. RESULTS The length of distal margin ranged from 0 to 9.0 cm (median 1.5 cm). The pelvic control and disease-free survival rates at 5 years for patients with a margin of ≤ 3 mm were no different from those in whom it was > 3 mm (P = 0.6 and 0.8). The 5-year pelvic control rates between the ≤ 3 mm and > 3 mm groups were 66.7 and 86.2% in patients with a ypT3-4 tumour (P = 0.049) and 70.0 and 89.1% in patients who showed no response to CRT (P = 0.039). CONCLUSION The results suggest that a distal margin of < 3 mm in the surgical specimen after preoperative CRT is associated with a lower rate of pelvic tumour control at 5 years in patients with Stage ypT3-4 tumours or in those who do not respond to CRT.
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Affiliation(s)
- T G Kim
- Department of Radiation Oncology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
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Park YS, Namiesnik J, Vearasilp K, Leontowicz H, Leontowicz M, Barasch D, Nemirovski A, Trakhtenberg S, Gorinstein S. Bioactive compounds and the antioxidant capacity in new kiwi fruit cultivars. Food Chem 2014; 165:354-61. [PMID: 25038687 DOI: 10.1016/j.foodchem.2014.05.114] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 05/16/2014] [Accepted: 05/20/2014] [Indexed: 11/30/2022]
Abstract
The aim of this investigation was to find the best among seven different kiwi fruit cultivars ('Hayward', 'Daheung', 'Haenam', 'Bidan', 'Hort16A', 'Hwamei' and 'SKK12') for human consumption and to classify them as groups. Therefore, the contents of bioactive compounds and the level of antioxidant capacities of these cultivars were determined in four different extracts and compared. It was found that the contents of the bioactive compounds and the level of antioxidant capacities in different extracts differ significantly (P<0.05). Bioactive compounds and the antioxidant capacities were significantly higher in 'Bidan' and 'SKK12' cultivars than in other studied samples. The ethanol and water extracts of these cultivars exhibited high binding properties with human serum albumin (HSA) in comparison with catechin. In conclusion, based on fluorescence profiles the seven new kiwi fruit cultivars can be classified for three groups: 'Hayward' (including 'Daheung', 'Haenam', Hwamei' and 'SKK12'), 'Bidan' and 'Hort 16A'. In MS - profiles some differences in the peaks were found between the cultivar groups. All studied fruits could be a valuable addition to known disease preventing diets.
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Affiliation(s)
- Yong-Seo Park
- Department of Horticultural Science, Mokpo National University, Muan, Jeonnam, South Korea.
| | - Jacek Namiesnik
- Department of Analytical Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Kann Vearasilp
- Faculty of Pharmacy, Srinakharinwirot University, Bangkok, Thailand
| | - Hanna Leontowicz
- Warsaw University of Life Sciences (SGGW), Faculty of Veterinary Medicine, Department of Physiological Sciences, Warsaw, Poland
| | - Maria Leontowicz
- Warsaw University of Life Sciences (SGGW), Faculty of Veterinary Medicine, Department of Physiological Sciences, Warsaw, Poland
| | - Dinorah Barasch
- The Institute for Drug Research, School of Pharmacy, The Hebrew University, Hadassah Medical School, Jerusalem 91120, Israel
| | - Alina Nemirovski
- The Institute for Drug Research, School of Pharmacy, The Hebrew University, Hadassah Medical School, Jerusalem 91120, Israel
| | | | - Shela Gorinstein
- The Institute for Drug Research, School of Pharmacy, The Hebrew University, Hadassah Medical School, Jerusalem 91120, Israel.
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Lee J, Yun GS, Lee JE, Kim M, Choi MJ, Lee W, Park HK, Domier CW, Luhmann NC, Sabbagh SA, Park YS, Lee SG, Bak JG. Toroidal mode number estimation of the edge-localized modes using the KSTAR 3-D electron cyclotron emission imaging system. Rev Sci Instrum 2014; 85:063505. [PMID: 24985817 DOI: 10.1063/1.4883180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new and more accurate technique is presented for determining the toroidal mode number n of edge-localized modes (ELMs) using two independent electron cyclotron emission imaging (ECEI) systems in the Korea Superconducting Tokamak Advanced Research (KSTAR) device. The technique involves the measurement of the poloidal spacing between adjacent ELM filaments, and of the pitch angle α* of filaments at the plasma outboard midplane. Equilibrium reconstruction verifies that α* is nearly constant and thus well-defined at the midplane edge. Estimates of n obtained using two ECEI systems agree well with n measured by the conventional technique employing an array of Mirnov coils.
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Affiliation(s)
- J Lee
- Pohang University of Science and Technology, Pohang 790-784, South Korea
| | - G S Yun
- Pohang University of Science and Technology, Pohang 790-784, South Korea
| | - J E Lee
- Pohang University of Science and Technology, Pohang 790-784, South Korea
| | - M Kim
- Pohang University of Science and Technology, Pohang 790-784, South Korea
| | - M J Choi
- Pohang University of Science and Technology, Pohang 790-784, South Korea
| | - W Lee
- Pohang University of Science and Technology, Pohang 790-784, South Korea
| | - H K Park
- Ulsan National Institute of Science and Technology, Ulsan 689-798, South Korea
| | - C W Domier
- University of California at Davis, Davis, California 95616, USA
| | - N C Luhmann
- University of California at Davis, Davis, California 95616, USA
| | - S A Sabbagh
- Columbia University, New York, New York 10027, USA
| | - Y S Park
- Columbia University, New York, New York 10027, USA
| | - S G Lee
- National Fusion Research Institute, Daejeon 305-333, South Korea
| | - J G Bak
- National Fusion Research Institute, Daejeon 305-333, South Korea
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Leontowicz M, Jesion I, Leontowicz H, Park YS, Namiesnik J, Jastrzebski Z, Katrich E, Tashma Z, Gorinstein S. Bioactivity and bioavailability of minerals in rats loaded with cholesterol and kiwi fruit. Microchem J 2014. [DOI: 10.1016/j.microc.2013.12.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
SUMMARY
Objective
The aim of this study is to evaluate the reproducibility of working casts of a digital impression system by comparing them with the original, virtual, and rapid prototyping casts.
Materials and Methods
A total of 54 cast sets in clinically stable occlusion were used. They were scanned by an iTero intraoral scanner and converted into STL format virtual casts. Rapid prototyping casts and polyurethane casts were fabricated from the iTero milling system based on the virtual casts. Several horizontal and vertical measurements were performed from the four types of casts, that is, original stone casts, virtual casts, rapid prototyping casts, and polyurethane casts of iTero. Measurement error, intraclass correlation coefficient (ICC), and differences among the casts were calculated and compared.
Results
Casts from iTero milling machines exhibited greater dimensional differences and lower ICC values than did other casts. In addition, many of the measurements of the iTero working casts showed statistically significant differences in comparison to the three other types of casts. In contrast, there were no statistically significant differences between the virtual and original casts.
Conclusion
Virtual casts made by the iTero intraoral scanner exhibited excellent reproducibility. However, the casts from the iTero milling machine showed greater dimensional differences and lower reproducibility compared to other types of casts.
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Affiliation(s)
- YC Hwang
- Yu-Chang Hwang, DDS, MS, graduate student, Major in Dentistry, Department of Medical Science, Graduate School, Korea University, Seoul, Republic of Korea
| | - YS Park
- Young-Seok Park, BS, DDS, MSD, PhD, assistant professor, Department of Oral Anatomy, Dental Research Institute and School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - HK Kim
- Hong-Kyun Kim, BS, MSD, graduate student, Department of Oral Anatomy, Dental Research Institute and School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - YS Hong
- Yong Shin Hong, DDS, graduate student, Department of Oral Anatomy, Dental Research Institute and School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - JS Ahn
- Jin-Soo Ahn, DDS, MSD, PhD, assistant professor, Department of Dental Biomaterials Science, Dental Research Institute and School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - JJ Ryu
- Jae-Jun Ryu, DDS, PhD, professor, Korea University, Department of Dentistry, Seoul National University, Seoul, Republic of Korea
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Kang DG, Khurana S, Baek JH, Park YS, Lee SH, Kim KI. Efficacy and safety using autotransfusion system with postoperative shed blood following total knee arthroplasty in haemophilia. Haemophilia 2013; 20:129-32. [PMID: 23902302 DOI: 10.1111/hae.12244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2013] [Indexed: 11/29/2022]
Abstract
The purpose of this study was to evaluate the efficacy and safety of postoperative wound drain salvage and autotransfusion system in haemophilic patients undergoing elective total knee arthroplasty (TKA). No literature exists on reinfusing drained blood in patient with haemophilia undergoing TKA. Eighty-eight knees of 66 patients received cemented TKA due to end-stage haemophilic arthropathy (group I; with autotransfusion in 59 knees, group II; without autotransfusion in 29 knees). In group I, the postoperative shed blood was transfused within 6 h after surgery. The amount of blood drainage and reinfused blood, rate and amount of allogenic transfusion, postoperative change of haemoglobin level, prothrombin time (PT) and activated partial thromboplastin time were analysed. The mean postoperative blood drainage was 932 ± 479 mL in group I and 830 ± 492 mL in group II (P > 0.05). The mean volume of blood reinfused was 530 ± 265 mL in group I. Allogenic transfusion was needed in six knees (10.2%) of group I and eight knees (27.6%) of group II (P = 0.036). The mean volume of allogenic transfusion was 480 ± 49 mL in group I and 1041 ± 691 mL in group II (P > 0.05). Changes of all the laboratory results before and after TKA showed no statistically significant difference except PT was prolonged in group I (P = 0.008) at postoperative day 1. Moreover, there was no significant complication related to either reinfusion or allogenic transfusion in both groups. This study showed that reinfusion of drained blood is a simple, safe and efficacious method in patients with haemophilia undergoing TKA.
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Affiliation(s)
- D G Kang
- Department of Orthopaedic Surgery, Center for Joint Diseases and Rheumatism, Kyung Hee University Hospital at Gangdong, Seoul, Korea
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Han IB, Ropper AE, Teng YD, Shin DA, Jeon YJ, Park HM, Shin DE, Park YS, Kim KN, Kim NK. Association between VEGF and eNOS gene polymorphisms and lumbar disc degeneration in a young Korean population. Genet Mol Res 2013; 12:2294-305. [PMID: 23884772 DOI: 10.4238/2013.july.8.10] [Citation(s) in RCA: 14] [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: 11/03/2022]
Abstract
Disturbances in blood flow to intervertebral discs (IVD) play an important role in IVD degeneration. Vascular endothelial growth factor (VEGF) and endothelial nitric oxide synthase (eNOS) are extremely important angiogenic factors for vasodilation and neovascularization. We investigated the relationship between single nucleotide polymorphisms (SNPs) of the VEGF and eNOS genes and genetic susceptibility to lumbar IVD degeneration in a young adult Korean population. Two hundred and forty-one participants (aged 18 to 30 years), with or without low back pain, were selected for the study. Magnetic resonance imaging was made of the lumbar spine in all participants. The patient group (N = 102) had low back pain clinically and lumbar IVD degeneration radiographically. The control group (N = 139) included subjects with and without low back pain; all were negative radiographically for lumbar IVD degeneration. Using PCR-RFLP analysis, we analyzed VEGF (-2578C>A, -1154G>A, -634G>C, and 936C>T) and eNOS (-786T>C, 4a4b and 894G>T) SNPs. We made combined analyses of the genes and performed haplotype analyses. There were no significant differences in the genotype distribution of polymorphisms of VEGF and eNOS genes among patients and controls. However, the frequency of VEGF -2578CA +AA/-634CC combined genotypes was significantly higher in patients when compared with controls [odds ratio (OR) = 21.00; 95% confidence interval (CI) = 2.590- 170.240]. The frequencies of the -2578A/-1154A/-634C/936C (OR = 3.831; 95%CI = 1.068-13.742), -2578A/-1154A/-634C (OR = 3.356; 95%CI = 1.198-9.400), and -2578A/-634C/936C (OR = 10.820; 95%CI = 2.811-41.656) haplotypes were also significantly higher in patients than in controls. We conclude that the combined genotype VEGF -2578CA+AA/-634CC is a possible risk factor for IVD degeneration and the VEGF -2578A/-1154A/-634C/936C haplotype may increase the risk for development of IVD degeneration. Furthermore, the VEGF -634C allele appears to be associated with susceptibility to IVD degeneration.
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Affiliation(s)
- I B Han
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam/Graduate School of Medicine, Yonsei University, Seoul, South Korea
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Lee J, Park YS, Lee CH, Lee SM, Yoo CG, Kim YW, Han SK, Yim JJ. Antiplatelet or anticoagulant therapy might not increase the risk of haemoptysis in patients with bronchiectasis. Int J Tuberc Lung Dis 2013; 17:989-91. [PMID: 23651792 DOI: 10.5588/ijtld.12.0807] [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: 11/10/2022] Open
Abstract
The aim of this study was to assess whether the use of antiplatelets and anticoagulants increased haemoptysis in patients with bronchiectasis. Cases (n = 242) with a history of haemoptysis were compared with controls (n = 242) without a history of haemoptysis. Of the 242 case patients, 16.5% took antiplatelets compared with 19.8% of controls (P = 0.346). The proportion of warfarin users did not differ between cases and controls (3.3% vs. 2.5%, P = 0.588). The use of these agents might not be associated with increased risk of haemoptysis in patients with bronchiectasis.
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Affiliation(s)
- J Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
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Lee HY, Seong MW, Park SS, Hwang SS, Lee J, Park YS, Lee CH, Lee SM, Yoo CG, Kim YW, Han SK, Yim JJ. Diagnostic accuracy of Xpert® MTB/RIF on bronchoscopy specimens in patients with suspected pulmonary tuberculosis. Int J Tuberc Lung Dis 2013; 17:917-21. [PMID: 23621953 DOI: 10.5588/ijtld.12.0885] [Citation(s) in RCA: 50] [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] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To determine the diagnostic accuracy of the Xpert® MTB/RIF assay using samples obtained through bronchoscopy in patients with suspected pulmonary tuberculosis (PTB). DESIGN We retrospectively reviewed the records of patients with suspected PTB for whom the Xpert MTB/RIF assay was performed on bronchoscopy specimens. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) for the diagnosis of active PTB were calculated for acid-fast bacilli (AFB) smear microscopy and the Xpert assay using culture of Mycobacterium tuberculosis from sputum or bronchoscopy specimens as a reference standard. RESULTS A total of 132 patients were included in the final analysis. Of these, 38 had culture-confirmed PTB. The sensitivity of the Xpert assay using bronchial washing or bronchoalveolar lavage (BAL) fluid for the diagnosis of PTB was 81.6%, and specificity was 100%. The PPV and NPV were 100% and 92.1%, respectively. The sensitivity and specificity of AFB smear microscopy were respectively 13.2% and 98.8%. CONCLUSION The Xpert assay on bronchoscopy specimens provided an accurate diagnosis of PTB in patients who had a negative AFB smear or who could not produce sputum.
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Affiliation(s)
- H Y Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Lung Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
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Leontowicz M, Jesion I, Leontowicz H, Park YS, Namiesnik J, Rombolà AD, Weisz M, Gorinstein S. Health-promoting effects of ethylene-treated kiwifruit 'Hayward' from conventional and organic crops in rats fed an atherogenic diet. J Agric Food Chem 2013; 61:3661-3668. [PMID: 23566063 DOI: 10.1021/jf400165k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Kiwifruit is a subtropical fruit that is very popular among consumers. Kiwifruit 'Hayward' ( Actinidia deliciosa C.F. Liang et A.R. Ferguson) is an important source of bioactive compounds and possesses high antioxidant capacity, but its value can be changed during ripening. The aim of this study was to compare the levels of total polyphenols (TP), ascorbic acid (AA), and total antioxidant capacities (TACs) of ethylene-treated and nontreated kiwifruits 'Hayward' from conventional and organic farming. The influence of these fruits on lipid profile, TAC, and liver enzymes in plasma of rats fed diets with cholesterol was studied. Ethylene treatment shortened the ripening of kiwifruits. Ethylene-treated kiwifruits from organic farming (OHE) have the highest contents of TP and TAC. The experiment in vivo was performed during 33 days on male Wistar rats (111 ± 5 g), divided into six groups: one without cholesterol, control (C), and five groups with 1% of cholesterol (Chol). Four groups with cholesterol were supplemented with 5% of lyophilized kiwifruits: ethylene treated, organic (Chol/OHE) or conventional (Chol/CHE); and untreated, organic (Chol/OHC) or conventional (Chol/CHC). Cholesterol diets supplemented with kiwifruit influenced the palatability and feed intake, body gain, and FER. Diets containing kiwifruits significantly influenced the decrease of TG (61%), TC (29%), LDL-C (38%), atherogenic index TC/HDL-C (25%), and atherogenic index (AI, 32%), without differences between treatments. A significant increase of TAC in plasma of rats fed kiwifruit was obtained by DPPH (18%), FRAP (55%), and ABTS (55%). Aspartate aminotransferase (AST) activity in serum was significantly lower for all groups with kiwifruit supplementation. Alanine aminotransferase (ALT) was lower only in diet groups supplemented with conventional fruits in comparison with the cholesterol group. Glucose levels were higher in groups with kiwifruit supplementation than in C and Chol groups. Supplementation of Chol groups with organic kiwifruits influenced the prothrombin index and significantly decreased the amount of platelets (PLT) in blood. In conclusion, studied kiwifruit 'Hayward' can be a very good ingredient of the diet, especially for patients suffering from hypercholesterolemia and with other cardiovascular diseases, but not for diabetic patients.
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Affiliation(s)
- Maria Leontowicz
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Warsaw, Poland.
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Kang YK, Chang HM, Yook JH, Ryu MH, Park I, Min YJ, Zang DY, Kim GY, Yang DH, Jang SJ, Park YS, Lee JL, Kim TW, Oh ST, Park BK, Jung HY, Kim BS. Adjuvant chemotherapy for gastric cancer: a randomised phase 3 trial of mitomycin-C plus either short-term doxifluridine or long-term doxifluridine plus cisplatin after curative D2 gastrectomy (AMC0201). Br J Cancer 2013; 108:1245-51. [PMID: 23449357 PMCID: PMC3619263 DOI: 10.1038/bjc.2013.86] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [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] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND This phase 3 study evaluated the efficacy of new adjuvant chemotherapy (MFP), which intensified the mitomycin-C (MMC) plus short-term doxifluridine (Mf) for gastric cancer. PATIENTS AND METHODS A total of 855 patients (424 in Mf, 431 in MFP) with pathological stage II-IV (M0) gastric cancer after D2 gastrectomy were randomly assigned to receive either Mf (MMC 20 mg m(-2), followed by oral doxifluridine 460-600 mg m(-2) per day for 3 months) or MFP (MMC 20 mg m(-2), followed by oral doxifluridine 460-600 mg m(-2) per day for 12 months with 6 monthly infusions of 60 mg m(-2) of cisplatin) chemotherapy. RESULTS With a median follow-up of 6.6 years, there was no difference between the two groups in recurrence-free survival (RFS) (5-year RFS 61.1% in Mf and 57.9% in MFP; hazard ratio 1.10 (95% CI 0.89-1.35); P=0.39) and overall survival (OS) (5-year OS 66.5% in Mf and 65.0% in MFP; hazard ratio 1.11 (95% CI 0.89-1.39); P=0.33). CONCLUSION Intensification of Mf adjuvant chemotherapy by prolonging the duration of oral fluoropyrimidine and adding cisplatin was safe but not effective to improve the survivals in curatively resected gastric cancer patients.
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Affiliation(s)
- Y-K Kang
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea.
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Lee IS, Yook JH, Park YS, Kim KC, Oh ST, Kim BS. Suitability of endoscopic submucosal dissection for treatment of submucosal gastric cancers. Br J Surg 2013; 100:668-73. [PMID: 23334982 DOI: 10.1002/bjs.9051] [Citation(s) in RCA: 15] [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] [Accepted: 11/19/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND Endoscopic submucosal dissection (ESD) is not considered appropriate for all submucosal cancers owing to the risk of lymph node metastasis and difficulty estimating the deep margin status. This study aimed to determine predictive factors for lymph node metastases in submucosal cancer and to explore in which patients ESD might be feasible. METHODS Details of patients who had curative gastrectomy for submucosal gastric cancer at Asan Medical Centre from 2007 to 2011 were reviewed retrospectively to determine the relationship between lymph node metastasis and clinicopathological characteristics, including age, sex, tumour location, size, gross appearance, depth of invasion, histological type/differentiation, presence of lymphovascular/perineural invasion, and immunohistochemical staining results for p53, human epidermal growth factor receptor (HER) 1 and HER2. RESULTS A total of 1773 patients were analysed. The presence of lymphovascular invasion was related most strongly to lymph node metastasis. Multivariable analysis revealed that depth of invasion, tumour size, differentiation, gross appearance and perineural invasion were also related. Metastatic lymph nodes were found in four of 105 patients who met the classical criteria for ESD; all showed a moderately differentiated histological appearance. No lymph node metastases were observed in well differentiated SM1 tumours of any size (infiltration into upper third of submucosa), or in well differentiated SM2 (infiltration into middle third of submucosa) tumours of 2 cm or less without lymphovascular invasion. CONCLUSION Patients with well differentiated SM1 cancer of any size and those with well differentiated SM2 cancer of 2 cm or less without lymphovascular invasion may be suitable candidates for ESD.
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Affiliation(s)
- I S Lee
- Department of Surgery, Ulsan University College of Medicine and Asan Medical Centre, Seoul, Korea
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Ahn JY, Jung HY, Choi JY, Kim MY, Lee JH, Choi KS, Kim DH, Choi KD, Song HJ, Lee GH, Kim JH, Park YS. Natural course of noncurative endoscopic resection of differentiated early gastric cancer. Endoscopy 2012. [PMID: 23188661 DOI: 10.1055/s-0032-1325676] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [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: 12/14/2022]
Abstract
BACKGROUND AND STUDY AIMS Following noncurative endoscopic resection of early gastric cancer (EGC), the patient should be observed when the underlying disease is severe, the patient is elderly, or the patient refuses further treatment. The aim of this study was to analyze the clinical outcomes of patients with differentiated EGC who underwent noncurative endoscopic resection without additional treatment. PATIENTS AND METHODS Included patients underwent noncurative endoscopic resection for differentiated EGC without additional treatment at the Asan Medical Center between July 1994 and January 2009. Clinical and oncological outcomes were analyzed. RESULTS A total of 159 patients were included in the analysis. The median follow-up period was 33 months (interquartile range [IQR] 22 - 52 months). In total, 40 patients died (25.2 %) - 3 due to stomach cancer, 34 due to other causes, and 3 from unknown causes; the median survival time after endoscopic treatment for these patients was 27.5 months (IQR 13.8 - 48.3 months). Multivariate analysis showed that the rates of underlying disease (P < 0.001) and lymphovascular invasion (P = 0.005) were higher among the 40 patients who died than among the 119 survivors. The overall 3- and 5-year survival rates were 82.9 % and 77.1 %, respectively; the rates of the patients with lymphovascular invasion were 61.9 % and 42.4 %, respectively, and the rates of patients without lymphovascular invasion were 86.1 % and 81.8 %, respectively (P < 0.001). CONCLUSIONS Additional treatment provides fewer benefits to patients who do not have long life expectancies. Additional surgery can be considered for patients with lymphovascular invasion because of its high mortality rate; however, the benefits and risks of surgery should be considered carefully.
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Affiliation(s)
- J Y Ahn
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, South Korea
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Lee J, Lim HJ, Cho YJ, Park YS, Lee SM, Yang SC, Yoo CG, Kim YW, Han SK, Yim JJ. Recurrence after successful treatment among patients with multidrug-resistant tuberculosis. Int J Tuberc Lung Dis 2012; 15:1331-3. [PMID: 22283890 DOI: 10.5588/ijtld.11.0098] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A retrospective review was conducted of patients with multidrug-resistant tuberculosis (MDR-TB) to elucidate the rate of recurrence after successful treatment. Of 123 MDR-TB patients, 90 were declared as 'cured' or 'treatment completed' after individualised treatment; four (4.4%) experienced recurrence. All patients with recur- rent MDR-TB were documented as 'treatment completed' after treatment. Recurrence of MDR-TB is possible after successful treatment, particularly among those documented as 'treatment completed'.
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Affiliation(s)
- J Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Lung Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
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Park JH, Song YM, Sung J, Lee K, Kim YS, Park YS. Genetic influence on bone mineral density in Korean twins and families: the healthy twin study. Osteoporos Int 2012; 23:1343-9. [PMID: 21656262 DOI: 10.1007/s00198-011-1685-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Accepted: 05/20/2011] [Indexed: 12/01/2022]
Abstract
UNLABELLED Bone mineral density (BMD), a representative marker of osteoporosis risk, is found to be highly heritable in this Korean study, which is very consistent with the findings in Western populations. This finding strongly supports that genetic factors are significant determinants of osteoporosis risk along with individual biological and behavioral factors. INTRODUCTION Although genetic factors are known to contribute significantly to variations in BMD in Western populations, such an association has not been fully evaluated in an Asian population. This study was conducted to determine the role of genetic factors on BMD in Korean population. METHODS The study participants were 2,728 men and women consisting of 497 monozygotic (MZ) twin pairs, 119 dizygotic (DZ) twin pairs, and 1,496 first-degree relatives from the Healthy Twin Study. BMD was measured using dual-energy X-ray absorptiometry. Quantitative genetic analysis based on a variance decomposition model was performed. RESULTS Age and the measured covariates accounted for 17~61% of the variation in BMD, depending on the sites of measurement. After accounting for the covariate effects, the heritability of BMD at the whole body, thoracic and lumbar spine, whole ribs, whole pelvis, whole arms, and whole legs were 0.76, 0.72, 0.73, 0.71, 0.51, and 0.75, respectively. The pair-wise correlation of BMD was the highest within MZ twin pairs, followed by DZ twin pairs, sibling pairs, and parents-child pairs. Cross-trait correlation analysis revealed a positive genetic correlation between BMDs at different sites, ranging from 0.80 (arm and leg BMD) to 0.50 (pelvis and arm BMD). CONCLUSIONS The high heritability of BMD in this Korean population similar to those found in Western populations and the significant common genetic basis between BMDs at different sites strongly supports a significant role of genetic determinants on the risk of osteoporosis.
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Affiliation(s)
- J-H Park
- Department of Family Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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Yi JH, Lee J, Lee J, Park SH, Park JO, Yim DS, Park YS, Lim HY, Kang WK. Randomised phase II trial of docetaxel and sunitinib in patients with metastatic gastric cancer who were previously treated with fluoropyrimidine and platinum. Br J Cancer 2012; 106:1469-74. [PMID: 22460270 PMCID: PMC3341944 DOI: 10.1038/bjc.2012.100] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [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] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Docetaxel is widely used as a chemotherapeutic agent for gastric cancer treatment. A combined regimen with sunitinib demonstrated a synergistic antitumour effect in a preclinical model. The aim of this study was to evaluate the efficacy and safety of this combination in patients with unresectable or metastatic advanced gastric cancer following failure of treatment with a fluoropyrimidine and platinum combination. METHODS This open-label, phase II, randomised trial enrolled patients with unresectable or metastatic gastric cancer. Patients were assigned to either a docetaxel monotherapy arm (D only arm: 60 mg m(-2), every 3 weeks) or a combination arm (DS arm: docetaxel+sunitinib 37.5 mg every day). The primary end point of the study was time to progression and the secondary end points were overall response rate, disease control rate, overall survival, and toxicity profile. A pharmacokinetic study was also performed. RESULTS A total of 107 patients were entered into the study. The TTP was not significantly prolonged in the DS arm when compared with the D only arm (DS vs D only arm: 3.9 months (95% confidence interval (CI) 2.9-4.9) vs 2.6 months (95% CI 1.8-3.5) (P=0.206). The hazard ratio for TTP was 0.77 (95% CI 0.52-1.16). However, the objective response rate was significantly higher in the DS arm (41.1% vs 14.3%, P=0.002). Patients in the DS arm experienced stomatitis, diarrhoea, and hand-foot syndrome more frequently. CONCLUSION The addition of sunitinib to docetaxel did not significantly prolong TTP, although it significantly increased response.
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Affiliation(s)
- J H Yi
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-Gu, Seoul, Korea
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Kang YH, Sun B, Park YS, Park CS, Jin YH. GABA(A) and GABA(B) receptors have opposite effects on synaptic glutamate release on the nucleus tractus solitarii neurons. Neuroscience 2012; 209:39-46. [PMID: 22410341 DOI: 10.1016/j.neuroscience.2012.02.025] [Citation(s) in RCA: 7] [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] [Received: 12/07/2011] [Revised: 02/06/2012] [Accepted: 02/11/2012] [Indexed: 01/03/2023]
Abstract
Cranial visceral afferent nerve transfers information about visceral organs to nucleus tractus solitarii (NTS) by releasing the excitatory neurotransmitter glutamate. Various endogenous modulators affect autonomic reflex responses by changing glutamatergic responses in the NTS. Although the expression of GABA(A) and GABA(B) receptors in glutamatergic terminals is known, their functional contribution on glutamate release is poorly characterized. Here, we used mechanically isolated NTS neurons to examine the mechanisms by which presynaptic GABA(A) and GABA(B) receptors modulate glutamatergic excitatory postsynaptic currents (EPSCs). EPSC were isolated by clamping voltage at equilibrium potential for chloride (-49 mV) without any GABA receptors antagonists. In all neurons, GABA(A) agonist, muscimol (1 and 10 μM), increased EPSC frequency (284.1±57% and 278.4±87% of control, respectively), but the GABA(B) agonist, baclofen (10 μM), decreased EPSC frequency (43±8% of control). The GABA(A) antagonist, gabazine (18 μM), decreased EPSC frequency in 50% of tested neurons, whereas GABA(B) antagonist, CGP (5 μM), increased the EPSC frequency in 36% of tested neurons. External application of GABA (1 and 30 μM) facilitating the EPSC frequency. The facilitation of the GABA(A) receptor-mediated release of glutamate was blocked by Na⁺-K⁺-Cl⁻ cotransporter type 1 antagonist or Na⁺ and Ca²⁺ channel inhibitors indicating GABA(A) presynaptic depolarization. Thus, tonically released GABA activates GABA(A) and GABA(B) receptors to modulate the release of glutamate. These findings provide cellular mechanisms of heterosynaptic GABA-glutamate integration of peripheral visceral afferent signals in the NTS.
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Affiliation(s)
- Y-H Kang
- Department of Physiology, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
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Yoon DH, Ryu MH, Park YS, Lee HJ, Lee C, Ryoo BY, Lee JL, Chang HM, Kim TW, Kang YK. Phase II study of everolimus with biomarker exploration in patients with advanced gastric cancer refractory to chemotherapy including fluoropyrimidine and platinum. Br J Cancer 2012; 106:1039-44. [PMID: 22343617 PMCID: PMC3304416 DOI: 10.1038/bjc.2012.47] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background: To evaluate the activity and safety of everolimus and identify potential biomarkers for efficacy of everolimus in patients with advanced gastric cancer (AGC), who failed both fluoropyrimidine and platinum. Methods: Fifty-four patients received everolimus (10 mg day−1). The primary objective was to determine the 4-month progression-free survival (PFS) rate, assumed to be 30%. We additionally investigated the potential biomarkers for everolimus as an exploratory endpoint in those who underwent tumour biopsies. Results: Two patients (3.7%) achieved partial response and the disease control rate (DCR) was 38.9%. At a median follow-up duration of 8.7 months, the 4-month PFS rate was 18.4%, not fulfilling the primary hypothesis, with a median PFS of 1.7 months and a median overall survival of 8.3 months. The high expression of pS6Ser240/4 at baseline was significantly associated with higher DCR (P=0.043) and prolonged PFS (P=0.001). Grade 1/2 asthenia (96.3%) recorded as the leading toxicity and hyperglycaemia (20.4%) was the most common non-hematological grade 3/4 toxicity. Three patients experienced grade 3/4 pneumonitis. Notably, two experienced treatment-related deaths. Conclusion: Everolimus is active against a limited number of patients with AGC. pS6Ser240/4 may be a potential predictive biomarker for everolimus, which requires validation. Careful monitoring is necessary despite generally favourable toxicity profile.
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Affiliation(s)
- D H Yoon
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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