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Koo SS, Krishnan RJ, Ishikawa K, Matsunaga M, Ahn HJ, Murayama KM, Kitamura RK. Subtotal vs total cholecystectomy for difficult gallbladders: A systematic review and meta-analysis. Am J Surg 2024; 229:145-150. [PMID: 38168604 DOI: 10.1016/j.amjsurg.2023.12.022] [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: 10/17/2023] [Revised: 12/14/2023] [Accepted: 12/19/2023] [Indexed: 01/05/2024]
Abstract
INTRODUCTION With severely inflamed gallbladders, laparoscopic cholecystectomy can be difficult and may require procedures like subtotal cholecystectomy (SC). Few studies exist comparing SC and total cholecystectomy (TC) in the setting of severe biliary inflammation. This meta-analysis aims to compare SC and TC for difficult gallbladders. METHODS Medline-OVID, Embase-OVID, and Cinahl were searched including only studies comparing SC to TC for difficult gallbladders. Primary outcome was CBD injury. Secondary outcomes included bile leak, duodenal injury, retained stone, bleeding, intraabdominal collection, wound infection, reoperation, and mortality. RESULTS Ten studies were included. Compared to TC, SC significantly lowered the risk for CBD injury (0 % vs. 1.6 %, RR 0.30, 95%CI 0.10-0.87) but increased risk of bile leaks (RR 3.5, 95%CI 1.79-6.84), postoperative ERCP (RR 2.86, 95%CI 1.53-5.35), intraabdominal collections (RR 2.55, 95%CI 1.32-4.93), and reoperation (RR 2.92, 95%CI 1.14-7.47). CONCLUSION SC is a reasonable alternative to difficult gallbladders that may decrease the risk of CBD injuries. Knowing both approaches is crucial to manage the difficult gallbladder while minimizing harm. Further studies are needed to understand the value of SC for difficult cholecystectomy.
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Affiliation(s)
- Sylvia Sj Koo
- John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI, 96813, USA; Department of Surgery, The Queen's Medical Center, Honolulu, HI, 96813, USA.
| | - Rohin J Krishnan
- John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI, 96813, USA
| | - Kyle Ishikawa
- Department of Quantitative Health Sciences, University of Hawai'i, John A. Burns School of Medicine, Honolulu, HI, 96813, USA
| | - Masako Matsunaga
- Department of Quantitative Health Sciences, University of Hawai'i, John A. Burns School of Medicine, Honolulu, HI, 96813, USA
| | - Hyeong Jun Ahn
- Department of Quantitative Health Sciences, University of Hawai'i, John A. Burns School of Medicine, Honolulu, HI, 96813, USA
| | - Kenric M Murayama
- John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI, 96813, USA; Department of Surgery, The Queen's Medical Center, Honolulu, HI, 96813, USA
| | - Riley K Kitamura
- John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI, 96813, USA; Department of Surgery, The Queen's Medical Center, Honolulu, HI, 96813, USA
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Deguchi N, Ishikawa K, Tokioka S, Kobayashi D, Mori N. Relationship between blood culture time to positivity, mortality rate, and severity of bacteremia. Infect Dis Now 2024; 54:104843. [PMID: 38043910 DOI: 10.1016/j.idnow.2023.104843] [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: 08/04/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 12/05/2023]
Abstract
OBJECTIVES We investigated the association between patient severity or mortality and time to positivity in bacteremia caused by various pathogens. PATIENTS AND METHODS This single-center retrospective study included patients with positive blood culture results. RESULTS Longer time to positivity was associated with 30-day mortality for Staphylococcus aureus (221 cases, time to positivity: 17.4 h in the 30-day mortality group vs. 14.1 h in the survival group). Age, chronic kidney disease, cerebrovascular disease, hypertensive drug use, consciousness disorder, and minimal systolic blood pressure were significant predictors of 30-day mortality. For S. aureus, mortality within 30 days was significantly higher when time to positivity was > 24 h (p = 0.04). The time to positivity of Streptococcus pneumoniae, α, β-hemolytic Streptococcus, Enterococcus sp., Enterobacteriaceae, glucose-nonfermenting Gram-negative rods, Candida sp., and anaerobe was not significantly associated with 30-day mortality. CONCLUSIONS Among various pathogens, time to positivity > 24 h was associated with 30-day mortality for S. aureus.
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Affiliation(s)
- N Deguchi
- Department of Infectious Diseases, St. Luke's International Hospital, Tokyo, Japan
| | - K Ishikawa
- Department of Infectious Diseases, St. Luke's International Hospital, Tokyo, Japan.
| | - S Tokioka
- Department of Cardiovascular Medicine, Sendai Medical Center, Sendai, Japan
| | - D Kobayashi
- Department of Primary Care and General Medicine Tokyo Medical University Ibaraki Medical Center, Japan
| | - N Mori
- Department of Infectious Diseases, St. Luke's International Hospital, Tokyo, Japan
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Rooks EA, Nayiga J, Rousslang LK, Meldrum JT, Ishikawa K, DeStigter KK, Rooks VJ. A pilot program evaluating WhatsApp as an interactive educational tool for pediatric radiology in Eastern Africa. Pediatr Radiol 2024; 54:400-406. [PMID: 37086289 PMCID: PMC10122084 DOI: 10.1007/s00247-023-05658-x] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 04/23/2023]
Abstract
The widespread use of WhatsApp as a communication tool makes it a candidate platform to facilitate the delivery of educational materials to radiology trainees in Eastern Africa. The aim of this pilot program is to assess the novel approach of using WhatsApp as a learning tool in pediatric radiology for residents in Kenya, Rwanda, Tanzania and Uganda. We recruited radiology residents to participate in a 3-month case-based pediatric radiology learning module that was delivered through WhatsApp to personal cell phones. Residents were presented with a multiple choice question once a week. Once they submitted their answer, the correct answer and explanations for each choice were provided. Questionnaires investigated comfort with reading pediatric radiology imaging, perception of the module content and convenience of the approach. Of the 72 participants, 40 (56%) responded to all 12 questions and both questionnaires, of whom 22 (55%) reported little to no comfort before the module and feeling very comfortable after. Confidence decreased with the number of incorrect answers. There was no correlation between the number of correct answers and the year level of the resident. Participants reported that the module was useful for learning pediatric radiology, found the material moderately difficult and found the application convenient for learning. Pediatric radiology educational content delivered over WhatsApp to residents in Eastern Africa is perceived as beneficial and convenient. This interactive learning platform provides opportunities for mentorship and enhanced learning of pediatric radiology.
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Affiliation(s)
- Elizabeth A Rooks
- John A. Burns School of Medicine, University of Hawaii, 651 Ilali Street, Honolulu, HI, 96813, USA.
| | - Joyce Nayiga
- Department of Radiology, Makerere University, Kampala, Uganda
| | - Lee K Rousslang
- Department of Radiology, Tripler Army Medical Center, Honolulu, HI, USA
| | - Jaren T Meldrum
- Department of Radiology, Alaska Native Medical Center, Anchorage, AK, USA
| | - Kyle Ishikawa
- Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA
| | - Kristen K DeStigter
- Department of Radiology, University of Vermont Medical Center, Burlington, VT, USA
| | - V J Rooks
- Department of Radiology, Tripler Army Medical Center, Honolulu, HI, USA
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Emelyanenko AV, Rudyak VY, Shvetsov SA, Araoka F, Nishikawa H, Ishikawa K. Transformation of polar nematic phases in the presence of an electric field. Phys Rev E 2024; 109:014701. [PMID: 38366416 DOI: 10.1103/physreve.109.014701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 12/07/2023] [Indexed: 02/18/2024]
Abstract
Only a few years have passed since the discovery of polar nematics, and now they are becoming the most actively studied liquid-crystal materials. Despite numerous breakthrough findings made recently, a theoretical systematization is still lacking. In the present paper, we take a step toward systematization. The powerful technique of molecular-statistical physics has been applied to an assembly of polar molecules influenced by electric field. Three polar nematic phases were found to be stable at various conditions: the double-splay ferroelectric nematic N_{F}^{2D} (observed in the lower-temperature range in the absence of or at low electric field), the double-splay antiferroelectric nematic N_{AF} (observed at intermediate temperature in the absence of or at low electric field), and the single-splay ferroelectric nematic N_{F}^{1D} (observed at moderate electric field at any temperature below transition into paraelectric nematic N and in the higher-temperature range (also below N) at low electric field or without it. A paradoxical transition from N_{F}^{1D} to N induced by application of higher electric field has been found and explained. A transformation of the structure of polar nematic phases at the application of electric field has also been investigated by Monte Carlo simulations and experimentally by observation of polarizing optical microscope images. In particular, it has been realized that, at planar anchoring, N_{AF} in the presence of a moderate out-of-plane electric field exhibits twofold splay modulation: antiferroelectric in the plane of the substrate and ferroelectric in the plane normal to the substrate. Several additional subtransitions related to fitting the confined geometry of the cell by the structure of polar phases were detected.
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Affiliation(s)
| | - V Yu Rudyak
- Lomonosov Moscow State University, Moscow 119991, Russia
| | - S A Shvetsov
- Lomonosov Moscow State University, Moscow 119991, Russia
| | - F Araoka
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa Wako, Saitama 351-0198, Japan
| | - H Nishikawa
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa Wako, Saitama 351-0198, Japan
| | - K Ishikawa
- Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
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Lew R, Cheng S, Chun I, Ishikawa K, Ahn HJ, Wai C. Gastric adenocarcinoma location and postoperative complication rates in Asian patients: A 2014-2019 NSQIP analysis. Am J Surg 2024; 227:208-212. [PMID: 38587050 DOI: 10.1016/j.amjsurg.2023.10.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/01/2023] [Accepted: 10/04/2023] [Indexed: 04/09/2024]
Abstract
BACKGROUND Asian gastric cancer patients have higher long-term survival rates post-gastrectomy. This study compares 30-day post-gastrectomy outcomes between Asians and non-Asians. METHODS Gastric cancer patients undergoing elective gastrectomies were identified in 2014-2019 NSQIP datasets (n = 1,438). Demographics, comorbidities, and postoperative outcomes were analyzed. RESULTS Asians had lower odds of total gastrectomy (AOR = 0.52, p = 0.003), age ≥65 (AOR = 0.60, p = 0.006), smoking history (AOR = 0.35, p < 0.001), dyspnea (AOR = 0.25, p = 0.01), and hypoalbuminemia (AOR = 0.62, p = 0.025); they also had lower BMI (p < 0.001). Postoperative outcomes were not significantly different aside from a shorter median length of hospital stay in days (LOS) (Asians: 7 (6, 11); non-Asians: 8 (6, 11); p < 0.001). CONCLUSIONS Asian gastric cancer patients have significantly lower odds of having select preoperative comorbidities and have shorter hospital LOS.
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Affiliation(s)
- Rachel Lew
- University of Hawaii at Manoa John A. Burns School of Medicine, 651 Ilalo St, Honolulu, HI, 96813, United States.
| | - Shirley Cheng
- University of Hawaii at Manoa John A. Burns School of Medicine, 651 Ilalo St, Honolulu, HI, 96813, United States
| | - Ian Chun
- University of Hawaii at Manoa John A. Burns School of Medicine, 651 Ilalo St, Honolulu, HI, 96813, United States
| | - Kyle Ishikawa
- Department of Quantitative Health Sciences, University of Hawaii John A. Burns School of Medicine, 651 Ilalo Street, Medical Education Building Suite 411, Honolulu, HI, 96813, United States
| | - Hyeong Jun Ahn
- Department of Quantitative Health Sciences, University of Hawaii John A. Burns School of Medicine, 651 Ilalo Street, Medical Education Building Suite 411, Honolulu, HI, 96813, United States
| | - Christina Wai
- Department of Surgery, University of Hawaii John A. Burns School of Medicine, 1356 Lusitana Street, Queen's University Tower, Honolulu, HI, 96813, United States
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Ota E, Hiyoshi Y, Matsuura N, Ishikawa K, Fujinami F, Mukai T, Yamaguchi T, Nagasaki T, Akiyoshi T, Fukunaga Y. Standardization of preoperative stoma site marking and its utility for preventing stoma leakage: a retrospective study of 519 patients who underwent laparoscopic/robotic rectal cancer surgery. Tech Coloproctol 2023; 27:1387-1392. [PMID: 37358669 DOI: 10.1007/s10151-023-02839-6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 06/17/2023] [Indexed: 06/27/2023]
Abstract
PURPOSE Stoma site marking is an important preoperative intervention for preventing various stoma-associated complications. In our institution, standardized stoma site marking is routinely performed before rectal cancer surgery with stoma creation, and various stoma-associated factors are recorded in the ostomy-record template. The present study investigated risk factors for stoma leakage. METHODS Our stoma site marking is standardized so that it can be performed by non-stoma specialists. To identify risk factors of stoma leakage at 3 months after surgery, various preoperative factors associated with stoma site marking in our ostomy-record template were retrospectively analyzed in 519 patients who underwent rectal cancer surgery with stoma creation from 2015 to 2020. RESULTS Stoma leakage was seen in 35 of the 519 patients (6.7%). The distance between the stoma site marking and the umbilicus was less than 60 mm in 27 of the 35 patients (77%) who experienced stoma leakage, so a distance of less than 60 mm was identified as an independent risk factor for stoma leakage. Aside from preoperative factors, stoma leakage was also caused by postoperative skin wrinkles or surgical scars near the stoma site in 8 of 35 patients (23%). CONCLUSION Preoperative standardized stoma site marking is necessary to achieve reliable marking that is easy to perform. To reduce the risk of stoma leakage, a distance of 60 mm or more between the stoma site marking and the umbilicus is ideal, and surgeons need to contrive ways to keep surgical scars away from the stoma site.
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Affiliation(s)
- E Ota
- Gastroenterological Center, Department of Gastroenterological Surgery, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Y Hiyoshi
- Gastroenterological Center, Department of Gastroenterological Surgery, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan.
| | - N Matsuura
- Gastroenterological Center, Department of Wound, Ostomy and Continence (WOC) Nursing, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - K Ishikawa
- Gastroenterological Center, Department of Wound, Ostomy and Continence (WOC) Nursing, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - F Fujinami
- Gastroenterological Center, Department of Wound, Ostomy and Continence (WOC) Nursing, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - T Mukai
- Gastroenterological Center, Department of Gastroenterological Surgery, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - T Yamaguchi
- Gastroenterological Center, Department of Gastroenterological Surgery, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - T Nagasaki
- Gastroenterological Center, Department of Gastroenterological Surgery, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - T Akiyoshi
- Gastroenterological Center, Department of Gastroenterological Surgery, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Y Fukunaga
- Gastroenterological Center, Department of Gastroenterological Surgery, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
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Uehara T, Nishimura Y, Ishikawa K, Inada M, Matsumoto K, Doi H, Monzen H. Online Adaptive Radiotherapy for Pharyngeal Cancer: Dose-Volume Histogram Analysis between Adapted and Scheduled Plan. Int J Radiat Oncol Biol Phys 2023; 117:e729. [PMID: 37786121 DOI: 10.1016/j.ijrobp.2023.06.2247] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The present study aimed to evaluate whether online adapted plan with artificial intelligence (AI) driven work flow could be used in clinical settings with variable changes of the targets and organs at risk (OARs) for pharyngeal cancer. MATERIALS/METHODS Ten patients with pharyngeal cancer who underwent chemoradiotherapy at our institution between January and July 2020 were included for the analysis. All patients had been previously aligned daily with cone-beam computed tomography (CBCT) and treated by O-ring Linac. A simulated treatment was performed on the treatment emulator. Weekly fractions, once in every 4-5 fractions, were simulated in the treatment emulator for each patient using their previous on-treatment CBCTs. The dataset was divided into three groups according to the treatment period (1st-2nd week, 20 CBCTs), middle (3rd-4th week, 20 CBCTs), and late (5th-7th week, 30 CBCTs) period. In the present study, all of reference plan generation in treatment emulator were created on the initial plans of two-step method using 12 equidistant field IMRT. The prescribed dose was 70 Gy in 35 fractions and normalized to the dose of 68.6 Gy (98% dose) to 95% of the planning target volume (PTV). The adaptation process on treatment emulator includes auto-segmentation of daily anatomy, calculation of the dose in scheduled plans using the same monitor units and optimization and calculation of the dose in adapted plan. Dose-volume histogram (DVH) parameters between adapted and scheduled plans in terms of PTV (D98%, D95%, D50% and D2%), spinal cord (Dmax and D1cc), brain stem (Dmax), ipsilateral and contralateral parotid glands (Dmedian and Dmean) were evaluated in each period. RESULTS D98% of PTV of adapted plan was significantly higher than that of scheduled plan in early and middle period (p = 0.02 and <0.01, respectively). D95% of PTV of adapted plan was significantly higher than that of scheduled plan in all periods (p<0.01). D2% of PTV of adapted plan was significantly lower than that of scheduled plan in all periods (p = 0.04, 0.04 and 0.02 in each period, respectively). There was not significant difference in D50% of PTV between adapted and scheduled plan in all periods. In terms of OARs, Dmax of spinal cord of adapted plan was significantly lower than that of scheduled plan in all periods (p<0.01). Similarly, D1cc of spinal cord of adapted plan was lower than that of scheduled plan. Dmean of ipsilateral and contralateral parotid glands of adapted plan were lower than those of scheduled plan in the late period (p<0.01 and 0.03, respectively). CONCLUSION The present study revealed that adapted plan with AI driven work flow could create dosimetrically better plans for pharyngeal cancer compared to scheduled plan. It was suggested that online adaptive radiotherapy could be necessary to maintain PTV coverage while reducing the dose to OARs in all periods for pharyngeal cancer.
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Affiliation(s)
- T Uehara
- Department of Radiation Oncology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
| | - Y Nishimura
- Department of Radiation Oncology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
| | - K Ishikawa
- Department of Radiation Oncology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
| | - M Inada
- Department of Radiation Oncology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
| | - K Matsumoto
- Department of Medical Physics, Graduate School of Medical Sciences, Kindai University, Osakasayama, Osaka, Japan
| | - H Doi
- Department of Radiation Oncology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
| | - H Monzen
- Department of Medical Physics, Graduate School of Medical Sciences, Kindai University, Osakasayama, Osaka, Japan
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Dai YC, Lin YC, Ching LL, Tsai JJ, Ishikawa K, Tsai WY, Chen JJ, Nerurkar VR, Wang WK. Determining the Time of Booster Dose Based on the Half-Life and Neutralization Titers against SARS-CoV-2 Variants of Concern in Fully Vaccinated Individuals. Microbiol Spectr 2023; 11:e0408122. [PMID: 37428104 PMCID: PMC10434144 DOI: 10.1128/spectrum.04081-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 06/20/2023] [Indexed: 07/11/2023] Open
Abstract
Although mRNA-based COVID-19 vaccines reduce the risk of severe disease, hospitalization and death, vaccine effectiveness (VE) against infection and disease from variants of concern (VOC) wanes over time. Neutralizing antibodies (NAb) are surrogates of protection and are enhanced by a booster dose, but their kinetics and durability remain understudied. Current recommendation of a booster dose does not consider the existing NAb in each individual. Here, we investigated 50% neutralization (NT50) titers against VOC among COVID-19-naive participants receiving the Moderna (n = 26) or Pfizer (n = 25) vaccine for up to 7 months following the second dose, and determined their half-lives. We found that the time it took for NT50 titers to decline to 24, equivalent to 50% inhibitory dilution of 10 international units/mL, was longer in the Moderna (325/324/235/274 days for the D614G/alpha/beta/delta variants) group than in the Pfizer (253/252/174/226 days) group, which may account for the slower decline in VE of the Moderna vaccine observed in real-world settings and supports our hypothesis that measuring the NT50 titers against VOC, together with information on NAb half-lives, can be used to dictate the time of booster vaccination. Our study provides a framework to determine the optimal time of a booster dose against VOC at the individual level. In response to future VOC with high morbidity and mortality, a quick evaluation of NAb half-lives using longitudinal serum samples from clinical trials or research programs of different primary-series vaccinations and/or one or two boosters could provide references for determining the time of booster in different individuals. IMPORTANCE Despite improved understanding of the biology of SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2), the evolutionary trajectory of the virus is uncertain, and the concern of future antigenically distinct variants remains. Current recommendations for a COVID-19 vaccine booster dose are primarily based on neutralization capacity, effectiveness against circulating variants of concern (VOC), and other host factors. We hypothesized that measuring neutralizing antibody titers against SARS-CoV-2 VOC together with half-life information can be used to dictate the time of booster vaccination. Through detailed analysis of neutralizing antibodies against VOC among COVID-19-naive vaccinees receiving either of two mRNA vaccines, we found that the time it took for 50% neutralization titers to decline to a reference level of protection was longer in the Moderna than in the Pfizer group, which supports our hypothesis. In response to future VOC with potentially high morbidity and mortality, our proof-of-concept study provides a framework to determine the optimal time of a booster dose at the individual level.
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Affiliation(s)
- Yu-Ching Dai
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Yen-Chia Lin
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Lauren L. Ching
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
- Pacific Center for Emerging Infectious Diseases, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Jih-Jin Tsai
- Tropical Medicine Center, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Kyle Ishikawa
- Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Wen-Yang Tsai
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
- Pacific Center for Emerging Infectious Diseases, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - John J. Chen
- Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Vivek R. Nerurkar
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
- Pacific Center for Emerging Infectious Diseases, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Wei-Kung Wang
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
- Pacific Center for Emerging Infectious Diseases, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
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Kannan A, Ishikawa K, Chen J, Krening E, Gao F, Ross GW, Bruno MK. Differences Among Native Hawaiian, Asian, and White Patients with Progressive Supranuclear Palsy. Mov Disord 2023; 38:1355-1361. [PMID: 37157060 DOI: 10.1002/mds.29431] [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: 02/05/2023] [Revised: 04/16/2023] [Accepted: 04/19/2023] [Indexed: 05/10/2023] Open
Abstract
BACKGROUND Most studies of progressive supranuclear palsy (PSP) have been conducted in White populations. OBJECTIVE The objective of this study was to identify whether differences exist for patients with PSP among Whites, East Asians (EAs), and Native Hawaiians/Pacific Islanders (NHPIs) in Hawaii. METHODS We conducted a single-center, retrospective study of patients meeting Movement Disorder Society probable PSP criteria (2006-2021). Data variables included age of onset and diagnosis, comorbidities, and survival rate. Variables were compared across groups using Fisher's exact test, Kruskal-Wallis rank sum test, and log-rank tests. RESULTS A total of 94 (59 EAs, 9 NHPIs, 16 Whites, and 10 Others) patients were identified. Mean age ± standard deviation (in years) of symptom onset/diagnosis were both youngest in NHPIs (64.0 ± 7.2/66.3 ± 8.0) followed by Whites (70.8 ± 7.6/73.9 ± 7.8), then EAs (75.9 ± 8.2/79.2 ± 8.3) (P < 0.001). Median survival from diagnosis was significantly lower (P < 0.05) in NHPIs (2 years) compared with EAs (4 years) and Whites (6 years). CONCLUSIONS There may be racial disparities for PSP, and studies are needed to identify genetic, environmental, and socioeconomic contributions. © 2023 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Ashok Kannan
- John A. Burns School of Medicine, University of Hawai'i at Manoa, Honolulu, Hawaii, USA
| | - Kyle Ishikawa
- John A. Burns School of Medicine, University of Hawai'i at Manoa, Honolulu, Hawaii, USA
| | - John Chen
- John A. Burns School of Medicine, University of Hawai'i at Manoa, Honolulu, Hawaii, USA
| | - Emma Krening
- The Queen's Medical Center, Honolulu, Hawaii, USA
| | - Fay Gao
- John A. Burns School of Medicine, University of Hawai'i at Manoa, Honolulu, Hawaii, USA
- The Queen's Medical Center, Honolulu, Hawaii, USA
| | - G Webster Ross
- Pacific Health Research and Education Institute, Virginia Pacific Islands Health Care System, Honolulu, Hawaii, United States
| | - Michiko Kimura Bruno
- John A. Burns School of Medicine, University of Hawai'i at Manoa, Honolulu, Hawaii, USA
- The Queen's Medical Center, Honolulu, Hawaii, USA
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McNerney KO, Si Lim SJ, Ishikawa K, Dreyzin A, Vatsayan A, Chen JJ, Baggott C, Prabhu S, Pacenta HL, Philips C, Rossoff J, Stefanski HE, Talano JA, Moskop A, Verneris M, Myers D, Karras NA, Brown P, Bonifant CL, Qayed M, Hermiston M, Satwani P, Krupski C, Keating AK, Baumeister SHC, Fabrizio VA, Chinnabhandar V, Egeler E, Mavroukakis S, Curran KJ, Mackall CL, Laetsch TW, Schultz LM. HLH-like toxicities predict poor survival after the use of tisagenlecleucel in children and young adults with B-ALL. Blood Adv 2023; 7:2758-2771. [PMID: 36857419 PMCID: PMC10275701 DOI: 10.1182/bloodadvances.2022008893] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 02/17/2023] [Accepted: 02/19/2023] [Indexed: 03/03/2023] Open
Abstract
Chimeric antigen receptor-associated hemophagocytic lymphohistiocytosis (HLH)-like toxicities (LTs) involving hyperferritinemia, multiorgan dysfunction, coagulopathy, and/or hemophagocytosis are described as occurring in a subset of patients with cytokine release syndrome (CRS). Case series report poor outcomes for those with B-cell acute lymphoblastic leukemia (B-ALL) who develop HLH-LTs, although larger outcomes analyses of children and young adults (CAYAs) with B-ALL who develop these toxicities after the administration of commercially available tisagenlecleucel are not described. Using a multi-institutional database of 185 CAYAs with B-ALL, we conducted a retrospective cohort study including groups that developed HLH-LTs, high-grade (HG) CRS without HLH-LTs, or no to low-grade (NLG) CRS without HLH-LTs. Primary objectives included characterizing the incidence, outcomes, and preinfusion factors associated with HLH-LTs. Among 185 CAYAs infused with tisagenlecleucel, 26 (14.1%) met the criteria for HLH-LTs. One-year overall survival and relapse-free survival were 25.7% and 4.7%, respectively, in those with HLH-LTs compared with 80.1% and 57.6%, respectively, in those without. In multivariable analysis for death, meeting criteria for HLH-LTs carried a hazard ratio of 4.61 (95% confidence interval, 2.41-8.83), controlling for disease burden, age, and sex. Patients who developed HLH-LTs had higher pretisagenlecleucel disease burden, ferritin, and C-reactive protein levels and lower platelet and absolute neutrophil counts than patients with HG- or NLG-CRS without HLH-LTs. Overall, CAYAs with B-ALL who developed HLH-LTs after tisagenlecleucel experienced high rates of relapse and nonrelapse mortality, indicating the urgent need for further investigations into prevention and optimal management of patients who develop HLH-LTs after tisagenlecleucel.
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Affiliation(s)
- Kevin O. McNerney
- Cancer and Blood Disorders Institute, Johns Hopkins All Children’s Hospital, St. Petersburg, FL
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Stephanie J. Si Lim
- Division of Oncology, Department of Pediatrics, John A. Burns School of Medicine, University of Hawai’i at Manoa, Honolulu, HI
| | - Kyle Ishikawa
- Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawai’i at Manoa, Honolulu, HI
| | - Alexandra Dreyzin
- Center for Cancer and Blood Disorders, Children’s National Hospital, Washington, DC
| | - Anant Vatsayan
- Center for Cancer and Blood Disorders, Children’s National Hospital, Washington, DC
| | - John J. Chen
- Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawai’i at Manoa, Honolulu, HI
| | - Christina Baggott
- Department of Pediatrics, School of Medicine, Stanford University, Stanford, CA
| | - Snehit Prabhu
- Center for Cancer Cell Therapy, Stanford Cancer Institute, School of Medicine, Stanford University, Stanford, CA
| | - Holly L. Pacenta
- Department of Pediatrics, University of Texas Southwestern Medical Center/Children’s Health, Dallas, TX
- Division of Hematology and Oncology, Cook Children’s Medical Center, Fort Worth, TX
| | - Christine Philips
- Division of Pediatrics, University of Cincinnati, Cincinnati, OH
- Cincinnati Children’s Hospital Medical Center, Cancer and Blood Disease Institute, Cincinnati, OH
| | - Jenna Rossoff
- Division of Pediatric Hematology, Oncology, and Stem Cell Transplantation, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL
| | | | - Julie-An Talano
- Division of Hematology/Oncology/Blood and Marrow Transplantation, Department of Pediatrics, Medical College of Wisconsin and Children’s Wisconsin, Milwaukee, WI
| | - Amy Moskop
- Division of Hematology/Oncology/Blood and Marrow Transplantation, Department of Pediatrics, Medical College of Wisconsin and Children’s Wisconsin, Milwaukee, WI
| | - Michael Verneris
- University of Colorado School of Medicine, Children’s Hospital of Colorado, Aurora, CO
| | - Doug Myers
- Department of Hematology, Oncology and Blood and Marrow Transplantation, Children’s Mercy Hospital, University of Missouri Kansas City, Kansas City, MO
| | - Nicole A. Karras
- Department of Pediatrics, City of Hope National Medical Center, Duarte, CA
| | - Patrick Brown
- Department of Oncology, Sidney Kimmel Cancer Center, John Hopkins University School of Medicine, Baltimore, MD
| | - Challice L. Bonifant
- Department of Oncology, Sidney Kimmel Cancer Center, John Hopkins University School of Medicine, Baltimore, MD
| | - Muna Qayed
- Division of Pediatric Hematology/Oncology and Bone Marrow Transplantation, Aflac Cancer and Blood Disorders Center, Emory University and Children’s Healthcare of Atlanta, Atlanta, GA
| | - Michelle Hermiston
- University of California San Francisco Benioff Children's Hospital, San Francisco, CA
| | - Prakash Satwani
- Division of Pediatric Hematology, Oncology and Stem Cell Transplant, Department of Pediatrics, Columbia University Medical Center, New York, NY
| | - Christa Krupski
- Division of Pediatrics, University of Cincinnati, Cincinnati, OH
- Cincinnati Children’s Hospital Medical Center, Cancer and Blood Disease Institute, Cincinnati, OH
| | - Amy K. Keating
- University of Colorado School of Medicine, Children’s Hospital of Colorado, Aurora, CO
| | - Susanne H. C. Baumeister
- Division of Pediatric Hematology-Oncology, Boston Children’s Hospital, Boston, MA
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA
- Department of Pediatrics, Harvard Medical School, Boston, MA
| | - Vanessa A. Fabrizio
- University of Colorado School of Medicine, Children’s Hospital of Colorado, Aurora, CO
| | - Vasant Chinnabhandar
- Division of Pediatric Blood and Marrow Transplantation, Department of Pediatrics, University of Minnesota Medical School, Minneapolis, MN
| | - Emily Egeler
- Center for Cancer Cell Therapy, Stanford Cancer Institute, School of Medicine, Stanford University, Stanford, CA
| | - Sharon Mavroukakis
- Center for Cancer Cell Therapy, Stanford Cancer Institute, School of Medicine, Stanford University, Stanford, CA
| | - Kevin J. Curran
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Pediatrics, Weill Cornell Medical College, Cornell University, New York, NY
| | - Crystal L. Mackall
- Department of Pediatrics, School of Medicine, Stanford University, Stanford, CA
- Center for Cancer Cell Therapy, Stanford Cancer Institute, School of Medicine, Stanford University, Stanford, CA
- Department of Medicine, School of Medicine, Stanford University, Stanford, CA
| | - Theodore W. Laetsch
- Department of Pediatrics and Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Division of Oncology, Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Liora M. Schultz
- Department of Pediatrics, School of Medicine, Stanford University, Stanford, CA
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Ohsaka H, Muramatsu KI, Fujita W, Jitsuiki K, Ishikawa K, Yanagawa Y. Evacuation from a military base via physician-staffed helicopters. BMJ Mil Health 2023:military-2023-002443. [PMID: 37217207 DOI: 10.1136/military-2023-002443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 05/08/2023] [Indexed: 05/24/2023]
Affiliation(s)
- Hiromichi Ohsaka
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - K-I Muramatsu
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - W Fujita
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - K Jitsuiki
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - K Ishikawa
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - Y Yanagawa
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
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Inada M, Nishimura Y, Ishikura S, Ishikawa K, Murakami N, Kodaira T, Ito Y, Tsuchiya K, Murakami Y, Saitoh J, Akimoto T, Nakata K, Yoshimura M, Teshima T, Toshiyasu T, Ota Y, Minemura T, Shimizu H, Hiraoka M. The Organs-at-Risk Dose Constraints in Head and Neck Intensity Modulated Radiation Therapy Using Data from a Multi-Institutional Clinical Trial (JCOG1015A1). Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Badimon JJ, Santos-Gallego CG, Requena-Ibanez JA, Picatoste B, Fardman B, Ishikawa K, Mazurek R, Pieper M, Fuster V. Cardioprotective effect of empagliflozin in acute myocardial infarction: the role of ketone bodies availability. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The cardio-renal benefits of SGLT2i have been clearly established by clinical trials. Of interest, despite not having any effect on the incidence of classic atherothrombotic events (MI and strokes), patients receiving SGLT2i treatment had a higher chance of surviving myocardial infarction (MI).
Purpose
We aim to evaluate the cardioprotective potential of empagliflozin on acute myocardial infarction.
We postulate that the benefits of SGLT2-I are mediated via an increase in circulating ketone bodies (KBs) induced by SGLT2i, and its preferential myocardial utilization energetically benefits the heart to better withstand an ischemic event.
Methods
The study was undertaken in our non-diabetic porcine model of ischemia/reperfusion. Animals were allocated to either one-week pre-treatment with empagliflozin or placebo before MI-induction. A third group received IV infusion of KBs at the time of the MI- induction to serve as positive-control. The acute effects of the treatments were studied 24 hours after MI-induction by Cardiac Magnetic Resonance (CMR). Immediately post-CMR, animals were sacrificed and heart samples collected for molecular analysis.
Results
(see Table and Figure): Despite similar initial ischemic injury (area at risk) in all groups, empagliflozin was associated with a significantly higher myocardial salvage (MSI 23.7±9.7 vs 4.5±3.6%, p<0.001) and better preserved cardiac function (LVEF 41.3±3.1 vs 33±5.5%, p<0.009) compared with placebo. The infusion of KBs replicated in part the beneficial profile of the empagliflozin group (MSI 16.7±8.8 and LVEF 39.1±3.6%). Histological analysis showed less cardiomyocyte apoptosis and less oxidative stress
Conclusions
To the best of our knowledge, this is the first study evaluating in vivo the cardioprotective potential of a SGLT2 inhibitor in a well-stablished porcine translational model. Furthermore, effects are evaluated using the gold standard for visualization and quantification of MI, Cardiac Magnetic Resonance (CMR). Three are the main conclusions:
1. One-week treatment with empagliflozin raises circulating KBs levels and confers significant cardio-protection during a myocardial infarction. Acute post-MI benefits (greater myocardial salvage and better preserved cardiac function) are already seen within 24 hours as compared with placebo.
2. Periprocedural IV infusion of KBs induces similar benefits than the SGLT2-I group.
3. These observations strongly support our hypothesis that SGLT2 inhibition is associated with increased circulating KBs and its selective use as preferential myocardial source of energy as a potential mechanism of action involved in the cardio-renal benefits observed with SGLT2i.
Funding Acknowledgement
Type of funding sources: Other. Main funding source(s): Spanish Society of Cardiology. Research Fellowship Grant.
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Affiliation(s)
- J J Badimon
- Icahn School of Medicine at Mount Sinai , New York , United States of America
| | - C G Santos-Gallego
- Icahn School of Medicine at Mount Sinai , New York , United States of America
| | - J A Requena-Ibanez
- Icahn School of Medicine at Mount Sinai , New York , United States of America
| | - B Picatoste
- Icahn School of Medicine at Mount Sinai , New York , United States of America
| | - B Fardman
- Icahn School of Medicine at Mount Sinai , New York , United States of America
| | - K Ishikawa
- Icahn School of Medicine at Mount Sinai , New York , United States of America
| | - R Mazurek
- Icahn School of Medicine at Mount Sinai , New York , United States of America
| | - M Pieper
- Icahn School of Medicine at Mount Sinai , New York , United States of America
| | - V Fuster
- Icahn School of Medicine at Mount Sinai, Boehringer Ingelheim. Cardiometabolic Diseases Research. Germany. , New York , United States of America
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Emelyanenko AV, Rudyak VY, Shvetsov SA, Araoka F, Nishikawa H, Ishikawa K. Emergence of paraelectric, improper antiferroelectric, and proper ferroelectric nematic phases in a liquid crystal composed of polar molecules. Phys Rev E 2022; 105:064701. [PMID: 35854528 DOI: 10.1103/physreve.105.064701] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 05/13/2022] [Indexed: 05/15/2023]
Abstract
We have elaborated a theoretical approach for the description of polar nematic phases observed by Nishikawa et al. [Adv. Mater. 29, 1702354 (2017)0935-964810.1002/adma.201702354], their structures, and transitions between them. Specific symmetry contributions to the pair molecular potentials provide the molecular mechanisms responsible for the formation of proper and improper polarity on the macroscopic level. An improper antiferroelectric nematic M2 phase can arise between paraelectric nematic M1 and proper ferroelectric nematic MP in the temperature scale. The local polarization in M2 arises mostly due to the local splay deformation. The director distribution in M2 represents the conjugation of cylindrical waves with opposite splay and polarization signs. The director and polarization are parallel to the cylindrical domain axes in the middle of each cylinder but exhibit considerable (mostly radial) deformation on the periphery of each cylinder. Polarization vectors are mostly stacked antiparallel on the borders between the domains without the director disruption. The domain size decreases with the decreasing temperature, the percentage of the antiferroelectric decouplings increases, and M2 exhibits the first-order phase transition into proper ferroelectric MP. With the increasing temperature the domain size in the M2 phase increases, the domination of particular polar orientation of molecules reduces, and finally, the domain size diverges at particular temperature corresponding to the second-order phase transition from M2 to paraelectric M1. Variations of the polar and nonpolar orientational order parameters are estimated within each phase and between the phases. Our experimental and computer simulation results (also presented in the paper) fully support our theoretical findings.
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Affiliation(s)
| | - V Yu Rudyak
- Lomonosov Moscow State University, Moscow 119991, Russia
| | - S A Shvetsov
- Lomonosov Moscow State University, Moscow 119991, Russia
- Lebedev Physical Institute, Moscow 119991, Russia
| | - F Araoka
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa Wako, Saitama 351-0198, Japan
| | - H Nishikawa
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa Wako, Saitama 351-0198, Japan
| | - K Ishikawa
- Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
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15
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Hayashi K, Sasaki H, Mugita T, Tomiyama T, Koizumi S, Kurokawa I, Matsubara E, Saito K, Fuji K, Ishikawa K, Fukagai T. Effect of long-term administration of Tadalafil on arteriosclerosis: A prospective cohort study. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hayashi K, Sasaki H, Mugita T, Tomiyama T, Koizumi S, Kurokawa I, Saito K, Fuji K, Ishikawa K, Fukagai T. Association between vascular lesion and penile erection hardness in Japanese patients with erectile dysfunction. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Ishikawa K, Sasaki H, Ogushi Y, Niikura A, Ota T, Ichimura Y, Hashimoto Y, Kurokawa I, Sugishita H, Tanifuji S, Yamagishi M, Shimoyama H, Ota M, Oshinomi K, Hayashi K, Morita J, Shichijo T, Fukagai T, Sugawara S. Lipid abnormality, current diabetes and age affect erectile hardness ∼ An analysis of data from complete medical checkups performed at a single hospital in Japan. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Yamagishi M, Sasaki H, Ogushi Y, Niikura A, Ota T, Ichimura Y, Hashimoto Y, Sugishita H, Kurokawa I, Tanifuji S, Imamura Y, Shimoyama H, Ota M, Ishikawa K, Hayashi K, Fukagai T. A study of erectile dysfunction in men 40 years of age or younger. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Shimoyama H, Sasaki H, Ogushi Y, Niikura A, Ota T, Ichimura Y, Hshimoto Y, Kurokawa I, Sugishita H, Tanifuji S, Yamagishi M, Imamura Y, Ota M, Ishikawa K, Hayashi K. Clinical analysis on the pharmaceutical formulation of VIAGRA OD Film. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bruno MK, Watanabe G, Ishikawa K, Chen JJ, Gao F, Nakagawa K, Taira D. Geographic Variation in Prescription Patterns of Parkinson's Disease Medications. Mov Disord 2022; 37:646-648. [PMID: 34859504 PMCID: PMC8940615 DOI: 10.1002/mds.28880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/10/2021] [Accepted: 11/12/2021] [Indexed: 11/11/2022] Open
Affiliation(s)
- Michiko K. Bruno
- The Queen’s Medical Center, Honolulu, HI,John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI
| | - Gina Watanabe
- John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI
| | - Kyle Ishikawa
- John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI
| | - John J. Chen
- John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI
| | - Fay Gao
- The Queen’s Medical Center, Honolulu, HI,John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI
| | - Kazuma Nakagawa
- The Queen’s Medical Center, Honolulu, HI,John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI
| | - Deborah Taira
- Daniel K. Inouye College of Pharmacy, University of Hawaii at Hilo, Hilo, HI
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Hosonuma M, Isozaki T, Furuya H, Yamazaki Y, Ikari Y, Nishimi S, Ishii S, Maeoka A, Tokunaga T, Wakabayashi K, Konishi N, Fukuse S, Ishikawa K, Sakai N, Inagaki K, Kasama T. AB0065 HGF/C-MET SIGNALING PROMOTE ANGIOGENESIS THROUGH CXCL16 IN RHEUMATOID ARTHRITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Hepatocyte growth factor (HGF) binds to the receptor tyrosine kinase c-Met and is a multifunctional cytokine that promotes processes such as cell proliferation, survival, differentiation, migration and angiogenesis [1]. We previously reported that HGF is produced by inflammation in the RA synovium, and activates monocyte migration to the synovium and promotes bone destruction through its own chemotactic effect and enhanced chemokine production in the synovium [2].Objectives:Therefore, we next aimed to determine the role of HGF in RA angiogenesis.Methods:The expression of HGF / c-Met in the serum and synovial tissues (STs) of RA patients and controls and human umbilical vein endothelial cells (HUVECs) was evaluated by ELISA and immunostaining. The effect of HGF/c-Met signaling on the promotion of CXCL16 production from HUVECs and RA fibroblast-like synoviocytes (FLSs) was determined by ELISA. To examine the role of HGF in angiogenesis, we performed in vitro Matrigel assays using HUVECs treated with HGF.Results:HGF in serum in treatment-naive RA patients was significantly higher than that in controls and HGF in serum in treatment-resistant RA showed a significant positive correlation with CXCL16. c-Met were expressed on vascular endothelial cells of RA STs and HUVECs. Stimulation of HUVECs with HGF dose-dependently increased CXCL16 production. c-Met signal inhibition by SU11274 suppressed TNF-α stimulation-enhanced CXCL16 production by RA FLSs in a dose-dependent manner. Furthermore, HGF induced HUVEC tube formation by 1.8-fold.Conclusion:HGF is produced by inflammation in the RA synovium, and activates angiogenesis through its own potent angiogenic effect and enhanced production of CXCL16 in the synovium. These results indicate that a strategy targeting c-Met signalling may be important for resolving treatment-resistant RA.References:[1]Nakamura T, Nishizawa T, Hagiya M, et al. Molecular cloning and expression of human hepatocyte growth factor. Nature. 1989 Nov 23;342(6248):440-3.[2]Hosonuma M, Sakai N, Furuya H, et al. Inhibition of hepatocyte growth factor/c-Met signalling abrogates joint destruction by suppressing monocyte migration in rheumatoid arthritis. Rheumatology (Oxford). 2021 Jan 5;60(1):408-419.Disclosure of Interests:None declared
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22
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Hosonuma M, Isozaki T, Furuya H, Yamazaki Y, Ikari Y, Nishimi S, Maeoka A, Ishii S, Tokunaga T, Wakabayashi K, Konishi N, Fukuse S, Ishikawa K, Sakai N, Inagaki K, Kasama T. POS0429 INTERLEUKIN-4 ACTIVATES EOSINOPHILS AND CCR3-POSITIVE T HELPER CELLS MIGRATION TO FASCIA AND PROMOTES FIBROSIS IN EOSINOPHILIC FASCIITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Eosinophilic fasciitis (EF) is a rare disease that causes inflammation and fibrosis mainly in the fascia of the extremities with eosinophilia. It has been reported that the hypertrophied fascia in EF shows inflammatory cell infiltration by the lymphocytes and eosinophils and increased expression of fibrosis-related cytokines genes in fibroblast [1]. However, its pathophysiology in the fascia remains unresolved.Objectives:Therefore, we focused on fascial fibroblasts and aimed to determine the role of interleukin-4 (IL-4) in eosinophil and helper T cell infiltration and fibrosis in fascial fibroblast in EF.Methods:Fascial fibroblasts were obtained from fascia biopsy of a patient with EF, and were stimulated with pre- and post-treatment serum of a patient with EF and healthy control, followed by microarray to analyze gene expression. Fascial fibroblasts were stimulated with IL-4 10 ng/mL, and gene expression of IL-4 receptor and CCR3 ligands, CCL7 and CCL11 were measured by qPCR. Transforming growth factor (TGF) -β and periostin in the pre- and post-treatment serum of a patient with EF and conditioned medium of fascial fibroblasts stimulated with IL-4 were measured by ELISA. To examine the role of IL-4 in proliferation, we performed in proliferation assays using fascial fibroblasts treated with IL-4. CCR3-positive T cells in the fascial tissue of EF, dermatomyositis, and polymyositis patients were evaluated by immunostaining.Results:By microarray analysis, CCL7 and CCL11 expression of fascial fibroblasts stimulated with pre-treatment EF serum was higher than that in post-treatment EF serum and control serum. CCL7 and CCL11 mRNA in IL-4 stimulated facial fibroblasts were increased by 5.1-fold and 7.3-fold, respectively. TGF-β and periostin in IL-4 stimulated facial fibroblast conditioned medium were also increased. In addition, TGF-β and periostin in EF serum were gradually decreased by treatment for 4 and 10 weeks, compared to before treatment. Finally, fascial fibroblast proliferation was significantly increased by stimulation with IL-4. Furthermore, infiltration of CCR3-positive T cells was specific to the fascial tissue of EF.Conclusion:In EF, IL-4 enhances the production of CCR3 ligands, TGF-β, and periostin from fascial fibroblasts. As a result, it promotes the migration of eosinophils and CCR3-positive T helper cells to the fascia and fibrosis. These results suggest that inhibition of IL-4 pathway could be a novel strategy for eosinophilic fasciitis.References:[1]Igarashi A, Nashiro K, Kikuchi K, et al. Connective tissue growth factor gene expression in tissue sections from localized scleroderma, keloid, and other fibrotic skin disorders. J Invest Dermatol. 1996 Apr;106(4):729-33.Disclosure of Interests:None declared
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Tong Y, Ishikawa K, Sasaki R, Takeshita I, Sakamoto J, Okita M. The effects of wheel-running using the upper limbs following immobilization after inducing arthritis in the knees of rats. Physiol Res 2021; 70:79-87. [PMID: 33453715 DOI: 10.33549/physiolres.934469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
This study investigated the effects of wheel-running using the upper limbs following immobilization after inducing arthritis in the knees of rats. Forty male Wistar rats (aged 8 weeks) divided into four groups randomly: arthritis (AR), immobilization after arthritis (Im), wheel-running exercise with the upper limbs following immobilization after arthritis induction (Im+Ex) and sham arthritis induction (Con). The knee joints of the Im and Im+Ex groups were immobilized with a cast for 4 weeks. In the Im+Ex group, wheel-running exercise was administered for 60 min/day (5 times/week). The swelling and the pressure pain threshold (PPT) of the knee joint were evaluated for observing the condition of inflammatory symptoms in affected area, and the paw withdraw response (PWR) was evaluated for observing the condition of secondary hyperalgesia in distant area. Especially, in order to evaluate histological inflammation in the knee joint, the number of macrophage (CD68-positive cells) in the synovium was examined. The expression of calcitonin gene-related peptide (CGRP) in the spinal dorsal horn (L2-3 and L4-5) was examined to evaluate central sensitization. The Im+Ex group showed a significantly better recovery than the Im group in the swelling, PPTs, and PWRs. Additionally, CGRP expression of the spinal dorsal horn (L2-3 and L4-5) in the Im+Ex group was significantly decreased compared with the Im group. According to the results, upper limb exercise can decrease pain in the affected area, reduce hyperalgesia in distant areas, and suppress the central sensitization in the spinal dorsal horn by triggering exercise-induced hypoalgesia (EIH).
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Affiliation(s)
- Y Tong
- Department of Physical Therapy Science, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
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Maeda T, Funayama E, Yamamoto Y, Murao N, Osawa M, Ishikawa K, Hayashi T. Long-term outcomes and recurrence-free interval after the treatment of keloids with a standardized protocol. J Tissue Viability 2020; 30:128-132. [PMID: 33288386 DOI: 10.1016/j.jtv.2020.11.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/29/2020] [Accepted: 11/20/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Recurrence rates of keloids have generally been reported at one time point. However, the longer the duration after treatment, the greater the likelihood that such lesions will recur. In this study, we analysed the time to recurrence during long-term follow-up. MATERIAL AND METHODS We retrospectively reviewed recurrence-free interval in 52 patients with keloid (age 8-79 years) who had been treated between June 2006 and January 2011 using a standardised protocol developed by our group. RESULTS Mean duration of follow-up was 37.5 (range, 7-120) months in patients with keloid. Kaplan-Meier survival curves revealed a statistically significant difference in recurrence-free interval between ear keloids and keloids excluding ear keloids. Recurrence rate for keloids was high in the first 2 years after treatment. CONCLUSIONS Kaplan-Meier analysis was useful for understanding the tendency of recurrence of keloids after treatment using a standardised protocol.
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Affiliation(s)
- T Maeda
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - E Funayama
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - Y Yamamoto
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - N Murao
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - M Osawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - K Ishikawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - T Hayashi
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan; Department of Oral and Maxillofacial Surgery, Graduate School of Dental Medicine, Hokkaido University, Japan.
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Satou T, Kitahara H, Ishikawa K, Nakayama T, Fujimoto Y, Sano K, Kobayashi Y. Short-term risk stratification using CADILLAC risk score in patients with ST elevation myocardial infarction. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
The recent reperfusion therapy for ST-elevation myocardial infarction (STEMI) has made the length of hospital stay shorter without adverse events. CADILLAC risk score is reportedly one of the risk scores predicting the long-term prognosis in STEMI patients.
Purpose
To invenstigate the usefulness of CADILLAC risk score for predicting short-term outcomes in STEMI patients.
Methods
Consecutive patients admitted to our university hospital and our medical center with STEMI (excluding shock, arrest case) who underwent primary PCI between January 2012 and April 2018 (n=387) were enrolled in this study. The patients were classified into 3 groups according to the CADILLAC risk score: low risk (n=176), intermediate risk (n=87), and high risk (n=124). Data on adverse events within 30 days after hospitalization, including in-hospital death, sustained ventricular arrhythmia, recurrent myocardial infarction, heart failure requiring intravenous treatment, stroke, or clinical hemorrhage, were collected.
Results
In the low risk group, adverse events within 30 days were significantly less observed, compared to the intermediate and high risk groups (n=13, 7.4% vs. n=13, 14.9% vs. n=58, 46.8%, p<0.001). In particular, all adverse events occurred within 3 days in the low risk group, although adverse events, such as heart failure (n=4), recurrent myocardial infarction (n=1), stroke (n=1), and gastrointestinal bleeding (n=1), were substantially observed after day 4 of hospitalization in the intermediate and high risk groups.
Conclusions
In STEMI patients with low CADILLAC risk score, better short-term prognosis was observed compared to the intermediate and high risk groups, and all adverse events occurred within 3 days of hospitalization, suggesting that discharge at day 4 might be safe in this study population. CADILLAC risk score may help stratify patient risk for short-term prognosis and adjust management of STEMI patients.
Initial event occurrence timing
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Satou
- Chiba University Hospital, Chiba, Japan
| | | | - K Ishikawa
- Eastern Chiba Medical Center, Cardiology, Chiba, Japan
| | | | | | - K Sano
- Eastern Chiba Medical Center, Cardiology, Chiba, Japan
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Nishi H, Hosomi N, Ohta K, Aoki S, Nakamori M, Nezu T, Shigeishi H, Shintani T, Obayashi T, Ishikawa K, Kinoshita N, Shiga Y, Sugiyama M, Ohge H, Maruyama H, Kawaguchi H, Kurihara H. Serum immunoglobulin G antibody titer to Fusobacterium nucleatum is associated with unfavorable outcome after stroke. Clin Exp Immunol 2020; 200:302-309. [PMID: 32155293 DOI: 10.1111/cei.13430] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 03/05/2020] [Accepted: 03/05/2020] [Indexed: 12/21/2022] Open
Abstract
Stroke can be a cause of death, while in non-fatal cases it is a common cause of various disabilities resulting from associated brain damage. However, whether a specific periodontal pathogen is associated with increased risk of unfavorable outcome after stroke remains unknown. We examined risk factors for unfavorable outcome following stroke occurrence, including serum antibody titers to periodontal pathogens. The enrolled cohort included 534 patients who had experienced an acute stroke, who were divided into favorable (n = 337) and unfavorable (n = 197) outcome groups according to modified ranking scale (mRS) score determined at 3 months after onset (favorable = score 0 or 1; unfavorable = score 2-6). The associations of risk factors with unfavorable outcome, including serum titers of IgG antibodies to 16 periodontal pathogens, were examined. Logistic regression analysis showed that the initial National Institutes of Health stroke scale score [odds ratio (OR) = 1·24, 95% confidence interval (CI) = 1·18-1·31, P < 0·001] and C-reactive protein (OR = 1·29, 95% CI = 1·10-1·51, P = 0·002) were independently associated with unfavorable outcome after stroke. Following adjustment with those, detection of the antibody for Fusobacterium nucleatum ATCC 10953 in serum remained an independent predictor of unfavorable outcome (OR = 3·12, 95% CI = 1·55-6·29, P = 0·002). Determination of the antibody titer to F. nucleatum ATCC 10953 in serum may be useful as a predictor of unfavorable outcome after stroke.
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Affiliation(s)
- H Nishi
- Department of General Dentistry, Hiroshima University Hospital, Hiroshima, Japan
| | - N Hosomi
- Department of Neurology, Chikamori Hospital, Kochi, Japan.,Department of Disease Model, Research Institute of Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - K Ohta
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - S Aoki
- Department of Clinical Neuroscience and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - M Nakamori
- Department of Neurology, Suiseikai Kajikawa Hospital, Hiroshima, Japan
| | - T Nezu
- Department of Clinical Neuroscience and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - H Shigeishi
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - T Shintani
- Center of Oral Examination, Hiroshima University Hospital, Hiroshima, Japan
| | - T Obayashi
- Department of General Dentistry, Hiroshima University Hospital, Hiroshima, Japan
| | - K Ishikawa
- Department of Clinical Neuroscience and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.,Department of Neurology, Suiseikai Kajikawa Hospital, Hiroshima, Japan
| | - N Kinoshita
- Department of Clinical Neuroscience and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Y Shiga
- Department of Clinical Neuroscience and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - M Sugiyama
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - H Ohge
- Department of Infectious Diseases, Hiroshima University Hospital, Hiroshima, Japan
| | - H Maruyama
- Department of Clinical Neuroscience and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - H Kawaguchi
- Department of General Dentistry, Hiroshima University Hospital, Hiroshima, Japan
| | - H Kurihara
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Goto H, Takaoka H, Sakai T, Ochi S, Wakabayashi S, Ishikawa K, Kanaeda T, Daimon M, Ueda M, Funabashi N, Sano K, Kobayashi Y. P599Native T1 mapping is useful for detection of myocardial fibrosis in cases with ischemic and non-ischemic myocardial diseases. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Evaluation of myocardial fibrosis (MF) as late gadolinium enhancement (LGE) on MRI is useful for differential diagnosis of various myocardial diseases and prediction of future adverse cardiac events in some specific myocardial diseases. Gadolinium contrast is contraindicated for cases with severe renal dysfunction, therefore non contrast MRI is necessary for detection of MF in cases with both myocardial disease and severe renal dysfunction.
Purpose
We aimed to evaluate diagnostic accuracy of native T1 mapping for detection of MF compared with LGE in cases with various myocardial diseases, including ischemic and non-ischemic myocardial diseases.
Methods
We selected consecutive 40 patients who were suspected of having various myocardial diseases and underwent cardiac MRI, using 1.5T MRI (Ingenia, Philips) in 10 cases (25%) or 3T MRI (Ingenia, Philips) in 30 cases (75%), including native T1 mapping (without contrast) and LGE using contrast media from Jan 2018 to Feb 2019 in our institution. We evaluated diagnostic accuracy for detection of MF in left ventricular myocardium (LVM) of native T1 mapping image compared with LGE as the gold standard, in a patient-based and segment-based analysis. In T1 mapping images, segmental high T1 lesions were defined as MF. In a segment-based analysis, MF was evaluated using 17 LVM segments model in American Heart Association.
Results
MF was detected in 139 LVM segments in 25 (63%) cases. Sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of native T1 mapping for detection of MF were 90%, 89%, 95%, 80% and 90% in a patient-based analysis, and 63%, 96%, 84%, 89% and 88% in a segment-based analysis (left figure). Native T1-values of LVM with MF were significantly higher than LVM without LGE (1351±79 vs 1093±124 in 1.5T and 1562±131 vs 1291±43 in 3T) (p<0.05 and p<0.01). Interobserver agreement of native T1 mapping and LGE were not significantly different (0.88 and 0.89, P=0.70). Overall diagnostic accuracy of native T1 mapping for detection of MF in a patient-based analysis, was not significantly different in between the cases with ischemic (n=18) and non-ischemic (n=22) myocardial disease (90% and 83.3%, P=0.10).
Conclusion
Native T1 mapping (without contrast) is useful for detection of MF in various myocardial diseases and high diagnostic accuracy is expected especially in a patient-based analysis.
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Affiliation(s)
- H Goto
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - H Takaoka
- Chiba University Graduate School of Medicine, Chiba, Japan
| | - T Sakai
- Eastern Chiba Medical Center, Radiology, Togane, Japan
| | - S Ochi
- Eastern Chiba Medical Center, Radiology, Togane, Japan
| | - S Wakabayashi
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - K Ishikawa
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - T Kanaeda
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - M Daimon
- Chiba University Graduate School of Medicine, Chiba, Japan
| | - M Ueda
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - N Funabashi
- Chiba University Graduate School of Medicine, Chiba, Japan
| | - K Sano
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Chiba, Japan
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28
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Goto H, Takaoka H, Sakai T, Ochi S, Wakabayashi S, Ishikawa K, Kanaeda T, Ueda M, Funabashi N, Sano K, Kobayashi Y. P6182Combination of a new iterative reconstruction technique with low tube voltage and high tube current has important role of detection of late enhancement on 320 slice CT. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
New iterative reconstruction tecniques, including Adaptive Iterative Dose Reduction 3D (AIDR 3D) and Forward Projected Model-based Iterative Reconstruction SoluTion (FIRST), have been recently available on new generation 320 slice CT, and they can provide high-quality CT images.
Purpose
The aim of this study was to evaluate the diagnostic performance of detection of abnormal late enhancement (LE) in left ventricular (LV) myocardium (LVM) using 320-slice CT with new iterative reconstruction techiniques, AIDR 3D (Figure A) and FIRST (Figure B).
Methods
A total of 100 patients who were suspected of having various myocardial diseases and underwent late phase acquisition both on cardiac CT and CMR within 3 months were analyzed. The first 50 consecutive patients (Group 1) underwent 320-slice CT with AIDR 3D, 120 Kv tube voltage, 519±71 mA tube current. The next 50 consecutive patients (Group 2) underwent 320-slice CT with FIRST, 80 or 100Kv tube voltage, 803±20 mA tube current. We compared diagnostic accuracy of CT for detection of LE in LVM against that of CMR (the gold standard) in between the 2 groups.
Results
On patient-by-patient analysis, sensitivity, specificity, positive (PPV) and negative predictive values (NPV), and overall accuracy for detection of LE on CT vs CMR were 87, 95, 96, 82, and 90% in Group 1, and 97, 83, 91, 88, and 90% in Group 2. There were no significant difference of diagnostic accuracy on patient-by-patient analysis in between the 2 groups (Figure C). However, on a segment-by-segment analysis (using 17 American Heart Association LV segment model), these values for detection of LE on CT vs CMR were 60, 95, 73, 91, and 88% in Group 1, and 85, 95, 86, 95, and 93% in Group 2. Sensitivity, PPV, NPV and overall accuracy were significantly higher in Group 2 than in Group 1 (all P<0.01) (Figure D).
Conclusions
Diagnostic accuracy of detection of LE in LVM on CT combining low tube voltage and high tube current acquisition on a new generation 320-slice CT with FIRST was superior to 320-slice CT with AIDR 3D.
Acknowledgement/Funding
TSUCHIYA MEMORIAL MEDICAL FOUNDATION
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Affiliation(s)
- H Goto
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - H Takaoka
- Chiba University Graduate School of Medicine, Chiba, Japan
| | - T Sakai
- Eastern Chiba Medical Center, Radiology, Togane, Japan
| | - S Ochi
- Eastern Chiba Medical Center, Radiology, Togane, Japan
| | - S Wakabayashi
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - K Ishikawa
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - T Kanaeda
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - M Ueda
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - N Funabashi
- Chiba University Graduate School of Medicine, Chiba, Japan
| | - K Sano
- Eastern Chiba Medical Center, Cardiology, Togane, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Chiba, Japan
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Ishizawa M, Noma T, Ishikawa S, Matsunaga K, Kawakami R, Miyake Y, Ishikawa K, Tsuji T, Murakami K, Minamino T. P6578Development of the novel program to diagnose atrial fibrillation using automated blood pressure monitor. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Atrial fibrillation (AF) is often asymptomatic and contributes to an increased risk of strokes. The development of proper screening device of AF is unmet medical needs worldwide. Recently, we had reported that multiple measurements using Omron automated blood pressure (BP) monitor with irregular heartbeat detection showed high sensitivity and specificity for AF detection in general cardiac patients, however, this method had limitations in discriminating between AF and other arrhythmias.
Purpose
The aim of this study is to develop a novel program that can accurately diagnose AF by discriminating it from other arrhythmias using the pressure pulse waveform data outputted from Omron automated BP monitor.
Methods
In our previous clinical research, BP measurements were performed 3 times each for 303 general cardiac patients (mean age: 72.2 years, 69.8% male) with recording the real-time single lead ECG, and a total of 909 pressure pulse waveforms were obtained. Among them, 840 pressure pulse waveforms from 280 patients (include 40 AF patients) used for further analysis. We developed a program to analyze and visualize uniquely the characteristics of AF waveform through the autocorrelation-based waveform processing system produced by Melody International Ltd, Kagawa, Japan. All visualized results were judged and classified into Sinus, Non-AF and AF by two individuals blinded to the results. For each patient who obtained 3 results, a two by two contingency table was created and sensitivity, specificity, and accuracy for diagnosing AF were calculated.
Results
Among 840 pressure pulse waveforms, only 21 (2 Sinus and 19 Non-AF) out of 720 Sinus and Non-AF waveforms were judged as AF, and 7 out of 120 AF waveforms were judged as Non-AF. None of AF waveforms was absolutely misjudged as Sinus. In analysis for each patient, when one or more AF judgements were found in 3 waveforms, the diagnosis of AF has sensitivity and specificity of 100% and 95.8%, respectively. When two or more AF judgements were found in 3 waveforms, the diagnosis of AF has sensitivity and specificity of 100% and 97.9%, respectively. In this rule, the diagnostic accuracy of AF reached up to 98.8%, and no sinus patients were misjudged as AF.
Conclusion
The novel program, which applied autocorrelation methods uniquely to analysis of the pressure pulse waveforms recorded by automated BP monitor, showed high sensitivity and high specificity for AF diagnosis in general cardiac patients. This program is expected to be useful for early diagnosis for asymptomatic AF patients.
Acknowledgement/Funding
The present research is supported by a grant through the SCOPE from the Ministry of Internal Affairs and Communications, Japan.
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Affiliation(s)
- M Ishizawa
- Kagawa University, Cardiorenal and Cerebrovascular Medicine, Kagawa, Japan
| | - T Noma
- Kagawa University, Cardiorenal and Cerebrovascular Medicine, Kagawa, Japan
| | - S Ishikawa
- Kagawa University, Cardiorenal and Cerebrovascular Medicine, Kagawa, Japan
| | - K Matsunaga
- Kagawa University, Cardiorenal and Cerebrovascular Medicine, Kagawa, Japan
| | - R Kawakami
- Kagawa University, Cardiorenal and Cerebrovascular Medicine, Kagawa, Japan
| | - Y Miyake
- Kagawa University, Cardiorenal and Cerebrovascular Medicine, Kagawa, Japan
| | - K Ishikawa
- Kagawa University, Cardiorenal and Cerebrovascular Medicine, Kagawa, Japan
| | - T Tsuji
- Kagawa University, Cardiorenal and Cerebrovascular Medicine, Kagawa, Japan
| | - K Murakami
- Kagawa University, Cardiorenal and Cerebrovascular Medicine, Kagawa, Japan
| | - T Minamino
- Kagawa University, Cardiorenal and Cerebrovascular Medicine, Kagawa, Japan
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Murakami Y, Ishikawa K, Sakayauchi T, Itasaka S, Negoro Y, Jingu K, Nishimura Y, Nagata Y, Ogawa K. Association between Severe Gastrointestinal Toxicity and Molecular Targeted Therapy in Patients Received Radiotherapy for Metastatic Bone Tumor or Myeloma. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Hayashi K, Kishida R, Tsuchiya A, Ishikawa K. Honeycomb blocks composed of carbonate apatite, β-tricalcium phosphate, and hydroxyapatite for bone regeneration: effects of composition on biological responses. Mater Today Bio 2019; 4:100031. [PMID: 32159156 PMCID: PMC7061555 DOI: 10.1016/j.mtbio.2019.100031] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [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: 07/05/2019] [Revised: 09/02/2019] [Accepted: 09/14/2019] [Indexed: 10/26/2022] Open
Abstract
Synthetic scaffolds exhibiting bone repair ability equal to that of autogenous bone are required in the fields of orthopedics and dentistry. A suitable synthetic bone graft substitute should induce osteogenic differentiation of mesenchymal stem cells, osteogenesis, and angiogenesis. In this study, three types of honeycomb blocks (HCBs), composed of hydroxyapatite (HAp), β-tricalcium phosphate (TCP), and carbonate apatite (CO3Ap), were fabricated, and the effects of HCB composition on bone formation and maturation were investigated. The HC structure was selected to promote cell penetration and tissue ingrowth. HAp and β-TCP HCBs were fabricated by extrusion molding followed by sintering. The CO3Ap HCBs were fabricated by extrusion molding followed by sintering and dissolution-precipitation reactions. These HCBs had similar macroporous structures: all harbored uniformly distributed macropores (∼160 μm) that were regularly arrayed and penetrated the blocks unidirectionally. Moreover, the volumes of macropores were nearly equal (∼0.15 cm3/g). The compressive strengths of CO3Ap, HAp, and β-TCP HCBs were 22.8 ± 3.5, 34.2 ± 3.3, and 24.4 ± 2.4 MPa, respectively. Owing to the honeycomb-type macroporous structure, the compressive strengths of these HCBs were higher than those of commercial scaffolds with intricate three-dimensional or unidirectional macroporous structure. Notably, bone maturation was markedly faster in CO3Ap HCB grafting than in β-TCP and HAp HCB grafting, and the mature bone area percentages for CO3Ap HCBs at postsurgery weeks 4 and 12 were 14.3- and 4.3-fold higher and 7.5- and 1.4-fold higher than those for HAp and β-TCP HCBs, respectively. The differences in bone maturation and formation were probably caused by the disparity in concentrations of calcium ions surrounding the HCBs, which were dictated by the inherent material resorption behavior and mechanism; generally, CO3Ap is resorbed only by osteoclastic resorption, HAp is not resorbed, and β-TCP is rapidly dissolved even in the absence of osteoclasts. Besides the composition, the microporous structure of HC struts, inevitably generated during the formation of HCBs of various compositions, may contribute to the differences in bone maturation and formation.
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Key Words
- Bone regeneration
- Bone-graft substitute
- Fourier transform infrared, FTIR
- Osteogenesis
- Osteogenic differentiation
- Scaffold
- blood vessels, BV
- calcium phosphate, CaP
- carbonate apatite, CO3Ap
- hematoxylin-eosin, HE
- honeycomb blocks, HCBs
- honeycomb, HC
- hydroxyapatite, HAp
- mesenchymal stem cells, MSCs
- osteoblast, OB
- osteoclasts, OCs
- postoperative week, POW
- tricalcium phosphate, TCP
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Affiliation(s)
- K. Hayashi
- Department of Biomaterials, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
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32
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Nishimura Y, Kodaira T, Ito Y, Tsuchiya K, Murakami Y, Saitoh J, Akimoto T, Nakata K, Yoshimura M, Teshima T, Toshiyasu T, Ota Y, Ishikawa K, Shimizu H, Minemura T, Ishikura S, Shibata T, Nakamura K, Shibata T, Hiraoka M. A Phase II Study of Two-Step Intensity Modulated Radiation Therapy (IMRT) with Chemotherapy for Loco-Regionally Advanced Nasopharyngeal Cancer (NPC) (JCOG1015). Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.06.314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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33
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Ishizawa M, Inoue T, Tobiume A, Hasui Y, Yokoyama S, Ishikawa S, Matsunaga K, Mantani K, Miyake Y, Ishikawa K, Tsuji T, Murakami K, Nishimoto N, Noma T, Minamino T. P1936Multiple measurements with an automated blood pressure monitor can detect atrial fibrillation with high sensitivity and specificity in general cardiac patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Ishizawa
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - T Inoue
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - A Tobiume
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - Y Hasui
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - S Yokoyama
- Kagawa University, Emergency and Disaster Medicine, Kagawa, Japan
| | - S Ishikawa
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - K Matsunaga
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - K Mantani
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - Y Miyake
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - K Ishikawa
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - T Tsuji
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - K Murakami
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - N Nishimoto
- Kagawa University, Clinical Research Support Center, Kagawa, Japan
| | - T Noma
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
| | - T Minamino
- Kagawa University, Cardiorenal Cerebrovascular Medicine, Kagawa, Japan
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Bikou O, Aguero J, Fish K, Watanabe S, Hammoudi N, Hajjar RJ, Ishikawa K. P6516Impact of pulmonary hypertension on the left ventricular stiffness: Pressure-volume relationship study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- O Bikou
- Mount Sinai School of Medicine, New York, United States of America
| | - J Aguero
- Mount Sinai School of Medicine, New York, United States of America
| | - K Fish
- Mount Sinai School of Medicine, New York, United States of America
| | - S Watanabe
- Mount Sinai School of Medicine, New York, United States of America
| | - N Hammoudi
- Mount Sinai School of Medicine, New York, United States of America
| | - R J Hajjar
- Mount Sinai School of Medicine, New York, United States of America
| | - K Ishikawa
- Mount Sinai School of Medicine, New York, United States of America
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Okajima K, Matsuura T, Oguma Y, Takahashi H, Tatebe H, Ishikawa K. EP-1440: Extended-field chemoradiotherapy for synchronous esophageal and pharyngeal tumors: a phase one study. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31749-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Nishida T, Lee SK, Inoue Y, Saeki K, Ishikawa K, Kaneko S. Adjunctive perampanel in partial-onset seizures: Asia-Pacific, randomized phase III study. Acta Neurol Scand 2018; 137:392-399. [PMID: 29250772 DOI: 10.1111/ane.12883] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/24/2017] [Indexed: 02/01/2023]
Abstract
OBJECTIVES To evaluate the efficacy, safety, and tolerability of perampanel, a selective, non-competitive, α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor antagonist, as an adjunctive treatment for patients with refractory partial-onset seizures (POS) from Asia-Pacific. MATERIALS & METHODS This multicenter, randomized, double-blind, placebo-controlled trial (ClinicalTrials.gov identifier: NCT01618695) involved patients aged ≥12 years with refractory POS (receiving 1-3 antiepileptic drugs). Patients were randomized (1:1:1:1) to receive once-daily placebo or perampanel 4, 8, or 12 mg over a 6-week titration and 13-week maintenance double-blind period. Enzyme-inducing antiepileptic drugs were equally stratified between groups. The primary efficacy endpoint was percent change in POS frequency per 28 days (double-blind phase vs baseline). Other efficacy endpoints included ≥50% responder rate and seizure freedom. Treatment-emergent adverse events (TEAEs) were also monitored. RESULTS Of 710 randomized patients, seizure frequency data were available for 704 patients. Median percent changes in POS frequency per 28 days indicated dose-proportional reductions in seizure frequency: -10.8% with placebo and -17.3% (P = .2330), -29.0% (P = .0003), and -38.0% (P < .0001) with perampanel 4, 8, and 12 mg, respectively. In total, 108 (15.3%) patients discontinued treatment; 44 (6.2%) due to TEAEs. TEAEs occurring in ≥5% of patients, and reported at least twice as frequently with perampanel vs placebo, included dizziness and irritability. CONCLUSIONS Adjunctive perampanel (8 and 12 mg/d) significantly improved seizure control in patients with refractory POS. Safety and tolerability were acceptable at daily doses of perampanel 4-12 mg.
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Affiliation(s)
- T. Nishida
- National Epilepsy Center; Shizuoka Institute of Epilepsy and Neurological Disorders; Shizuoka Japan
| | - S. K. Lee
- Department of Neurology; Seoul National University Hospital; Seoul South Korea
| | - Y. Inoue
- National Epilepsy Center; Shizuoka Institute of Epilepsy and Neurological Disorders; Shizuoka Japan
| | | | | | - S. Kaneko
- North Tohoku Epilepsy Center; Minato Hospital; Aomori Japan
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Ishikawa K, Inada M, Fukuda K, Tatebe H, Nakamatsu K, Kanamori S, Nishimura Y. Anatomical and Dosimetric Changes during IMRT for Oropharyngeal Cancer Detected by Weekly Cone-Beam CT With Deformable Image Registration. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ozaki K, Doi H, Mitsui J, Sato N, Yamane K, Majima T, Irioka T, Ishiura H, Doi K, Morishita S, Koyama K, Miura Y, Matsumoto N, Tanaka F, Tsuji S, Mizusawa H, Yokota T, Ishikawa K. Clinicoradiological characteristics of SCA34 patients with the hot cross bun sign caused by the P.TRP246GLY mutation in ELOVL4. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Sato N, Yokota T, Mizusawa H, Ishikawa K. Pentanucleotide-repeat-associated unconventional translation is observed in spinocerebellar ataxia type 31. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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40
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Higashi M, Ozaki K, Hattori T, Ishii T, Soga K, Sato N, Tomita M, Mizusawa H, Ishikawa K, Yokota T. Cerebellar ataxia subgroups can be differentiated by pontine magnetic resonance imaging. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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Ueyama M, Ishiguro T, Konno T, Koyama A, Wada K, Ishikawa K, Onodera O, Nagai Y. Repeat associated non-atg translation and its regulation in C9orf72-associated amyotrophic lateral sclerosis/frontotemporal dementia model fly. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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42
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Ishiguro T, Sato N, Ueyama M, Fujikake N, Sellier C, Tokuda E, Zamiri B, Gall-Duncan T, Mirceta M, Furukawa Y, Yokota T, Wada K, Taylor P, Pearson C, Charlet-Berguerand N, Mizusawa H, Nagai Y, Ishikawa K. Balance between RNA binding proetin TDP-43 and an RNA UGGAA repeat underlies pathogenesis of spinocerebellar ataxia type 31 (SCA31) and motor neuron disease fly models. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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43
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Takahashi Y, Ishikawa K, Ugawa Y, Onodera O, Kira J, Kuwabara S, Sasaki H, Sobue G, Takashima H, Takiyama Y, Takeda A, Tsuji S, Nakashima K, Miyai I, Yoshida K, Mizusawa H. Japan Consortium of Ataxias (J-Cat): A Cloud -Based national registry for degenerative ataxias providing framework for genetic diagnosis and Prospective Natural History Researches. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Garcia Santos-Gallego C, Vahl T, Ishikawa K, Picatoste B, Njerve I, Requena J, Sanz J, Narula J, Hajjar R, Fuster V, Badimon J. P4352Gut microbiota and its dependent metabolite Trimethylamine N-oxide (TMAO) exacerbate adverse post-infarction left ventricular remodeling. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ihara T, Hosokawa Y, Kumazawa K, Ishikawa K, Fujimoto J, Yamamoto M, Muramkami T, Goshima N, Ito E, Watanabe S, Semba K. An in vivo screening system to identify tumorigenic genes. Oncogene 2016; 36:2023-2029. [PMID: 27694896 DOI: 10.1038/onc.2016.351] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 08/11/2016] [Accepted: 08/15/2016] [Indexed: 12/26/2022]
Abstract
Screening for oncogenes has mostly been performed by in vitro transformation assays. However, some oncogenes might not exhibit their transforming activities in vitro unless putative essential factors from in vivo microenvironments are adequately supplied. Here, we have developed an in vivo screening system that evaluates the tumorigenicity of target genes. This system uses a retroviral high-efficiency gene transfer technique, a large collection of human cDNA clones corresponding to ~70% of human genes and a luciferase-expressing immortalized mouse mammary epithelial cell line (NMuMG-luc). From 845 genes that were highly expressed in human breast cancer cell lines, we focused on 205 genes encoding membrane proteins and/or kinases as that had the greater possibility of being oncogenes or drug targets. The 205 genes were divided into five subgroups, each containing 34-43 genes, and then introduced them into NMuMG-luc cells. These cells were subcutaneously injected into nude mice and monitored for tumor development by in vivo imaging. Tumors were observed in three subgroups. Using DNA microarray analyses and individual tumorigenic assays, we found that three genes, ADORA2B, PRKACB and LPAR3, were tumorigenic. ADORA2B and LPAR3 encode G-protein-coupled receptors and PRKACB encodes a protein kinase A catalytic subunit. Cells overexpressing ADORA2B, LPAR3 or PRKACB did not show transforming phenotypes in vitro, suggesting that transformation by these genes requires in vivo microenvironments. In addition, several clinical data sets, including one for breast cancer, showed that the expression of these genes correlated with lower overall survival rate.
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Affiliation(s)
- T Ihara
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Y Hosokawa
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - K Kumazawa
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - K Ishikawa
- Japan Biological Informatics Consortium (JBiC), Tokyo, Japan
| | - J Fujimoto
- Japan Biological Informatics Consortium (JBiC), Tokyo, Japan
| | - M Yamamoto
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - T Muramkami
- Laboratory of Tumor Biology, Faculty of Pharmacy, Takasaki University of Health and Welfare, Takasaki, Japan
| | - N Goshima
- Quantitative Proteomics Team, Molecular Profiling Research Center for Drug Discovery (molprof), National Institute of Advanced Industrial Science and Technology (AIST), Tokyo, Japan.,Division of Transcriptome Analysis, Fukushima, Japan
| | - E Ito
- Division of Gene Expression Analysis, Fukushima, Japan
| | - S Watanabe
- Division of Gene Expression Analysis, Fukushima, Japan
| | - K Semba
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan.,Division of gene function analysis, Translational Research Center, Fukushima Medical University, Fukushima, Japan
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Oguma Y, Matsuura T, Ishikawa K, Tatebe H, Fukuda K, Nishikawa T, Takahashi H, Okajima K. Internal Movement of the Prostate During Intensity Modulated Radiation Therapy Detected by Using Cone Beam Computed Tomography Considering the Prostate and Bladder Volumes and Rectal Diameter. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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47
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Nishimura Y, Kodaira T, Ito Y, Tsuchiya K, Murakami Y, Saitoh J, Akimoto T, Nakata K, Yoshimura M, Teshima T, Toshiyasu T, Ota Y, Ishikawa K, Shimizu H, Minemura T, Ishikura S, Shibata T, Nakamura K, Shibata T, Hiraoka M. A Phase II Study of Intensity Modulated Radiation Therapy (IMRT) with Chemotherapy for Locoregionally Advanced Nasopharyngeal Cancer (NPC) (JCOG1015): Acute Toxicity and Treatment Compliance. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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48
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Ishikawa K, Inada M, Fukuda K, Tatebe H, Nakamatsu K, Kanamori S, Nishimura Y. Pharyngeal Constrictor Muscle (PCM) Sparing and Dysphagia Toxicity in the Treatment of Intensity Modulated Radiation Therapy for Nasopharyngeal Cancer (NPC). Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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49
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Ishikawa K, Shimoyama N, Mannen H, Kuwabara K, Matsuoka H, Oguchi K. Visual methods to assess cold fingers and experimental verification. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2015:6776-9. [PMID: 26737849 DOI: 10.1109/embc.2015.7319949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Cold fingers is complaint of many people. To independently assess actual finger temperature, this paper uses prototype sensors to capture blood vessel width and blood flow rates. We verify their feasibility for future home healthcare use along with far infrared camera outputs. We elucidate the impact of three remedies, massage, hot cocoa, and shoulder exercises, on 7 subjects.
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Okajima K, Oguma Y, Matsuura T, Ishikawa K, Tatebe H, Fukuda K, Nishimura Y. Endoscopic Evaluation of Radiation Proctitis After Radiation Therapy for Prostate Cancer: Spatial Distribution of the Mucosal Lesion Correlated With Radiation Dose. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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