1.Emergent treatment using balloon-assisted ERCP versus EUS-guided drainage for acute cholangitis in patients with surgically altered anatomy
Takahiro SHISHIMOTO ; Masahiro ITONAGA ; Reiko ASHIDA ; Yasunobu YAMASHITA ; Yuki KAWAJI ; Takashi TAMURA ; Hiromu MORISHITA ; Akiya NAKAHATA ; Yuto SUGIHARA ; Tomokazu ISHIHARA ; Masayuki KITANO
International Journal of Gastrointestinal Intervention 2025;14(1):2-8
Background:
No studies have compared balloon-assisted endoscope-guided endoscopic retrograde cholangiopancreatography (BAE-ERCP) and endoscopic ultrasonography-guided biliary drainage (EUS-BD) for emergent treatment of acute cholangitis (AC) in patients with upper gastrointestinal surgically altered anatomy (SAA).
Methods:
This study retrospectively evaluated consecutive patients who underwent emergent BAE-ERCP or EUS-BD for AC with SAA between January 2020 and March 2024. Technical success, clinical success, procedure time, and adverse events (AEs) were compared between the two groups.
Results:
This study included 23 patients in the BAE-ERCP group and 14 patients in the EUS-BD group. Technical success and clinical success rates did not significantly differ between the two groups (88% vs. 100%, P = 0.51 and 95% vs. 93%, P = 0.66). Similarly, the rate of AEs was comparable between the two groups (4% vs. 14%, P = 0.54). The median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [interquartile range; IQR, 28.8–52.5] minutes vs. 70.0 [IQR, 60.0–90.0] minutes, P < 0.01). In cases with grade 2 or 3 cholangitis, the rates of technical success, clinical success, and AEs did not significantly differ between the two groups. However, the median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [IQR, 28.8–52.5] minutes vs. 70 [IQR, 56.3–90.0] minutes, P < 0.01).
Conclusion
While both BAE-ERCP and EUS-BD can be performed safely and effectively in patients with AC and SAA, the procedure time is significantly shorter with EUS-BD than with BAE-ERCP.
2.Emergent treatment using balloon-assisted ERCP versus EUS-guided drainage for acute cholangitis in patients with surgically altered anatomy
Takahiro SHISHIMOTO ; Masahiro ITONAGA ; Reiko ASHIDA ; Yasunobu YAMASHITA ; Yuki KAWAJI ; Takashi TAMURA ; Hiromu MORISHITA ; Akiya NAKAHATA ; Yuto SUGIHARA ; Tomokazu ISHIHARA ; Masayuki KITANO
International Journal of Gastrointestinal Intervention 2025;14(1):2-8
Background:
No studies have compared balloon-assisted endoscope-guided endoscopic retrograde cholangiopancreatography (BAE-ERCP) and endoscopic ultrasonography-guided biliary drainage (EUS-BD) for emergent treatment of acute cholangitis (AC) in patients with upper gastrointestinal surgically altered anatomy (SAA).
Methods:
This study retrospectively evaluated consecutive patients who underwent emergent BAE-ERCP or EUS-BD for AC with SAA between January 2020 and March 2024. Technical success, clinical success, procedure time, and adverse events (AEs) were compared between the two groups.
Results:
This study included 23 patients in the BAE-ERCP group and 14 patients in the EUS-BD group. Technical success and clinical success rates did not significantly differ between the two groups (88% vs. 100%, P = 0.51 and 95% vs. 93%, P = 0.66). Similarly, the rate of AEs was comparable between the two groups (4% vs. 14%, P = 0.54). The median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [interquartile range; IQR, 28.8–52.5] minutes vs. 70.0 [IQR, 60.0–90.0] minutes, P < 0.01). In cases with grade 2 or 3 cholangitis, the rates of technical success, clinical success, and AEs did not significantly differ between the two groups. However, the median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [IQR, 28.8–52.5] minutes vs. 70 [IQR, 56.3–90.0] minutes, P < 0.01).
Conclusion
While both BAE-ERCP and EUS-BD can be performed safely and effectively in patients with AC and SAA, the procedure time is significantly shorter with EUS-BD than with BAE-ERCP.
3.Emergent treatment using balloon-assisted ERCP versus EUS-guided drainage for acute cholangitis in patients with surgically altered anatomy
Takahiro SHISHIMOTO ; Masahiro ITONAGA ; Reiko ASHIDA ; Yasunobu YAMASHITA ; Yuki KAWAJI ; Takashi TAMURA ; Hiromu MORISHITA ; Akiya NAKAHATA ; Yuto SUGIHARA ; Tomokazu ISHIHARA ; Masayuki KITANO
International Journal of Gastrointestinal Intervention 2025;14(1):2-8
Background:
No studies have compared balloon-assisted endoscope-guided endoscopic retrograde cholangiopancreatography (BAE-ERCP) and endoscopic ultrasonography-guided biliary drainage (EUS-BD) for emergent treatment of acute cholangitis (AC) in patients with upper gastrointestinal surgically altered anatomy (SAA).
Methods:
This study retrospectively evaluated consecutive patients who underwent emergent BAE-ERCP or EUS-BD for AC with SAA between January 2020 and March 2024. Technical success, clinical success, procedure time, and adverse events (AEs) were compared between the two groups.
Results:
This study included 23 patients in the BAE-ERCP group and 14 patients in the EUS-BD group. Technical success and clinical success rates did not significantly differ between the two groups (88% vs. 100%, P = 0.51 and 95% vs. 93%, P = 0.66). Similarly, the rate of AEs was comparable between the two groups (4% vs. 14%, P = 0.54). The median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [interquartile range; IQR, 28.8–52.5] minutes vs. 70.0 [IQR, 60.0–90.0] minutes, P < 0.01). In cases with grade 2 or 3 cholangitis, the rates of technical success, clinical success, and AEs did not significantly differ between the two groups. However, the median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [IQR, 28.8–52.5] minutes vs. 70 [IQR, 56.3–90.0] minutes, P < 0.01).
Conclusion
While both BAE-ERCP and EUS-BD can be performed safely and effectively in patients with AC and SAA, the procedure time is significantly shorter with EUS-BD than with BAE-ERCP.
4.The neutrophil-osteogenic cell axis promotes bone destruction in periodontitis
Ando YUTARO ; Tsukasaki MASAYUKI ; Huynh Cong-Nhat NAM ; Zang SHIZAO ; Yan MINGLU ; Muro RYUNOSUKE ; Nakamura KAZUTAKA ; Komagamine MASATSUGU ; Komatsu NORIKO ; Okamoto KAZUO ; Nakano KENTA ; Okamura TADASHI ; Yamaguchi AKIRA ; Ishihara KAZUYUKI ; Takayanagi HIROSHI
International Journal of Oral Science 2024;16(1):154-162
The immune-stromal cell interactions play a key role in health and diseases.In periodontitis,the most prevalent infectious disease in humans,immune cells accumulate in the oral mucosa and promote bone destruction by inducing receptor activator of nuclear factor-κB ligand(RANKL)expression in osteogenic cells such as osteoblasts and periodontal ligament cells.However,the detailed mechanism underlying immune-bone cell interactions in periodontitis is not fully understood.Here,we performed single-cell RNA-sequencing analysis on mouse periodontal lesions and showed that neutrophil-osteogenic cell crosstalk is involved in periodontitis-induced bone loss.The periodontal lesions displayed marked infiltration of neutrophils,and in silico analyses suggested that the neutrophils interacted with osteogenic cells through cytokine production.Among the cytokines expressed in the periodontal neutrophils,oncostatin M(OSM)potently induced RANKL expression in the primary osteoblasts,and deletion of the OSM receptor in osteogenic cells significantly ameliorated periodontitis-induced bone loss.Epigenomic data analyses identified the OSM-regulated RANKL enhancer region in osteogenic cells,and mice lacking this enhancer showed decreased periodontal bone loss while maintaining physiological bone metabolism.These findings shed light on the role of neutrophils in bone regulation during bacterial infection,highlighting the novel mechanism underlying osteoimmune crosstalk.
5.Evaluation of chemical-specific IgG antibodies in male workers from a urethane foam factory.
Mayumi TSUJI ; Yasuhiro ISHIHARA ; Toyohi ISSE ; Chihaya KORIYAMA ; Megumi YAMAMOTO ; Noriaki KAKIUCHI ; Hsu-Sheng YU ; Masayuki TANAKA ; Takuto TSUCHIYA ; Masanori OHTA ; Rie TANAKA ; Toshihiro KAWAMOTO
Environmental Health and Preventive Medicine 2018;23(1):24-24
BACKGROUND:
Plastic resins are complex chemicals that contain toluene diisocyanate (TDI) and/or trimellitic anhydride (TMA), which cause occupational allergies (OA), including respiratory allergies. Serum IgGs against TDI and TMA have been suggested as potential markers of the exposure status and as exploring cause of OA. Although TDI-specific IgG has been examined for suspected OA, TMA-specific IgG is not commonly evaluated in a urethane foam factory. This study therefore investigated both TDI- and TMA-specific IgGs in suspected OA patients and to evaluate the usefulness of the measurement of multiple chemical-specific IgG measurement for practical monitoring.
METHODS:
Blood samples were collected from two male workers who developed respiratory allergies supposedly caused by occupational exposure to TDI and/or TMA for the presence of TDI- and TMA-specific IgGs. In addition, blood samples from 75 male workers from a urethane foam factory, along with 87 male control subjects, were collected in 2014 and tested for the same IgGs in 2014. The presence and levels of TDI- and TMA-specific serum IgGs were measured using dot blot assays.
RESULTS:
We found that controls had mean concentrations of TDI- and TMA-specific IgGs of 0.98 and 2.10 μg/mL, respectively. In the two workers with respiratory allergies, the TDI-specific IgG concentrations were 15.6 and 9.51 μg/mL, and TMA-specific IgG concentrations were 4.56 and 14.4 μg/mL, which are clearly higher than those in controls. Mean concentrations of TDI- and TMA-specific IgGs in the factory workers were 1.89 and 2.41 μg/mL, respectively, and are significantly higher than those of the controls (P < 0.001 and P < 0.026 for TDI- and TMA-specific IgGs, respectively).
CONCLUSION
The workers suspected of OA showed an evidently high level of TDI- and TMA-specific IgG, and these levels in workers at the urethane foam factory were also significantly higher than those in controls. In conclusion, the measurement of TDI- and TMA-specific IgG among workers using plastic resins is helpful to monitor their exposure status.
Adult
;
Air Pollutants, Occupational
;
adverse effects
;
immunology
;
Environmental Monitoring
;
Humans
;
Immunoglobulin G
;
blood
;
immunology
;
Japan
;
Male
;
Manufacturing and Industrial Facilities
;
statistics & numerical data
;
Middle Aged
;
Occupational Diseases
;
blood
;
chemically induced
;
Occupational Exposure
;
adverse effects
;
statistics & numerical data
;
Phthalic Anhydrides
;
immunology
;
toxicity
;
Respiratory Hypersensitivity
;
blood
;
chemically induced
;
Toluene 2,4-Diisocyanate
;
immunology
;
toxicity
;
Workforce
6.Static model simulation for routine mumps vaccination in Japan: with a result of mumps-related complications in a Japanese community hospital.
Taito KITANO ; Masayuki ONAKA ; Mariko ISHIHARA ; Atsuko NISHIYAMA ; Naoki HASHIMOTO ; Sayaka YOSHIDA
Clinical and Experimental Vaccine Research 2017;6(2):120-127
PURPOSE: Mumps vaccine has not been included in the routine national immunization program in Japan, leading to low vaccine coverage rates and periodic epidemics approximately every 5 years. Our hospital (a secondary community hospital in Japan) experienced an increased number of mumps-related complications with a nationwide epidemic in 2016. Using previously reported data and mumps-related cases in our hospital, we estimated the cost-effectiveness of routine mumps vaccination in Japan with a static model using current epidemiologic data. MATERIALS AND METHODS: With a decision tree flowchart of mumps infection and adverse events, we estimated the burden of mumps-related complications in our hospital for 5 years, and calculated the current annual national burden. Finally, we compared the current burden and assumptive burden of the stable state after routine vaccination in Japan using a static model. RESULTS: The cost-benefit ratios with sensitivity analysis were 3.69 (1.08-9.52) and 6.84 (1.51-23.73) in independent inoculation and simultaneous inoculation, respectively, from a social perspective in addition to an annual gain of 9,487 (3,227-14,659) quality adjusted life years. CONCLUSION: We contributed additional evidence in terms of cost-effectiveness that routine mumps vaccination should be introduced in Japan with simultaneous inoculation.
Asian Continental Ancestry Group*
;
Cost-Benefit Analysis
;
Decision Trees
;
Hospitals, Community*
;
Humans
;
Immunization Programs
;
Japan*
;
Mumps Vaccine
;
Mumps*
;
Quality-Adjusted Life Years
;
Software Design
;
Vaccination*
7.Acute Effect of Whole-Body Periodic Acceleration on Brachial Flow-Mediated Vasodilatation Assessed by a Novel Semi-Automatic Vessel Chasing UNEXEF18G System.
Bonpei TAKASE ; Hidemi HATTORI ; Yoshihiro TANAKA ; Akimi UEHATA ; Masayoshi NAGATA ; Masayuki ISHIHARA ; Masatoshi FUJITA
Journal of Cardiovascular Ultrasound 2013;21(3):130-136
BACKGROUND: Repeated application of whole-body periodic acceleration (WBPA) upregulates endothelial nitric oxide synthase and improves brachial artery endothelial function (BAEF) as assessed by measurement of flow-mediated vasodilatation (FMD). However, the acute effect of a single application of WBPA on BAEF has not been fully characterized. In addition, although a novel semi-automatic vessel chasing system (UNEXEF18G) has now been developed in Japan, the direct comparison of UNEXEF18G with a conventional method for FMD measures has not been conducted even if UNEXEF18G has already been utilized in a relatively large scale study. METHODS: We have developed a novel semi-automatic vessel chasing system (UNEXEF18G) that can measure FMD on-line, identify time to peak vasodilatation (TPV), and determine the area under the vasodilatation curve (AUC). Thus, 45 min of WBPA was applied in 20 healthy volunteers (age, 34 +/- 13 years), and BAEF was measured by UNEXEF18G before and after WBPA. Also, UNEXEF18G measured FMD was compared with those of a conventional FMD measurement method at rest in order to validate a novel UNEXEF18G measured FMD. RESULTS: Single WBPA resulted in a significant increase in FMD (from 6.4 +/- 3.4 to 10.7 +/- 4.3%, p < 0.01), a significant decrease in TPV and a significant increase in AUC. In the validation study for UNEXEF18G, Bland and Altman analysis showed that UNEXEF18G measured FMD was almost identical to those of the conventional method at rest. CONCLUSION: These data suggest the usefulness of a new UNEXEF18G and that single application of WBPA results in acute improvement in BAEF in humans.
Acceleration*
;
Area Under Curve
;
Brachial Artery
;
Humans
;
Japan
;
Nitric Oxide
;
Nitric Oxide Synthase Type III
;
Vasodilation*
8.Effect of Orengedokuto on Hyperthermia after mild Hypothermia Therapy
Toshihito TSUBO ; Masayuki NISHIMURA ; Eiji HASHIBA ; Hirobumi OKAWA ; Hironori ISHIHARA ; Kazuyoshi HIROTA
Kampo Medicine 2013;64(4):212-215
We studied the effects of orengedokuto on central hyperthermia after mild hypothermia therapy for cardiac arrest. The subjects in this study were 7 patients who showed central hyperthermia (>38.3 °C) after mild hypothermia therapy. Orengedokuto 7.5-15 g/day was administered and central temperature was monitored. Maximum change in central temperature was 1.55 ± 0.71 °C(from 39.1 ± 0.7 °C to 37.6 ± 0.7 °C) (p < 0.05). Mean change was 0.35 ± 0.77 °C, (from 37.7 ± 0.6 °C to 37.5 ± 0.7 °C). Thus we conclude that orengedokuto is a drug with applications in the treatment of central hyperthermia after mild hypothermia therapy.
9.Evaluation of Faculty and Students in Medical Education on the Basis of Small Problem-Based Learning Groups: A Questionnaire Survey of Medical Education Abroad. The Current Situation of the Medical Education Abroad from the Results of the Questionnaire Su
Ryuko MATSUDA ; Masayuki ISHIJIMA ; Yoko ISHIHARA ; Hiroshi TOMA ; Kintomo TAKAKURA
Medical Education 2000;31(1):29-34
To introduce problem-based learning (PBL) in small groups to medical education in Japan, a questionnaire was sent to 10 foreign medical schools where PBL has been used. Five schools in the United States and one each in the United Kingdom, Canada, and Australia responded to all 15 questions concerning their educational system, faculty training, faculty evaluation, and student evaluation. The faculty is trained in 7 medical schools, retrained in 4, and self-trained in 5. The faculty is objectively evaluated by students and a faculty committee in seven schools and the results are returned to the faculty. The students are evaluated by self-evaluation, written tests, and oral examination in al schools, and also by peer-evaluation in one school. The evaluation of students directly affects their promotion in all schools but one. Such effective evaluation and feedback systems, including evaluations of the students' learning skills and their attitude toward learning, play important roles in effective PBL.
10.How Do Students Evaluate Tutorial Education? I. Introduction of Tutorial Education in a Basic-Medicine Course.
Yuriko FUKUI ; Yoko ISHIHARA ; Hisashi YAMAURA ; Ryuko MATSUDA ; Naomi HIZUKA ; Makoto OZAKI ; Shinichiro WATANABE ; Naotoshi KANDA ; Makiko OSAWA ; Akiko NARIMATSU ; Masayuki ISHIJIMA ; Hiroshi TOMA ; Kintomo TAKAKURA
Medical Education 2000;31(6):457-464
Tokyo Women's Medical University introduced tutorial education in 1990 for 1st-through 4th-year students. To examine the effectiveness of this system in a basic-medicine course, questionnaires were given to all 2nd-year students. Many students felt that they had become accustomed to performing self-learning tasks through collecting information themselves and discussing their findings in a group; in particular, they found that tutorial education markedly improved their communication skills. A few students thought that this method helped them develop the ability of logical/critical thinking and analytic skills from multiple viewpoints. These findings suggest that an assessment system should be established by which students themselves could recognize the extent to which they have developed their abilities, which was the aim of tutorial education.


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