2.Changes in Retinal Hemodynamics in the Optic Nerve Head of Healthy Participants Measured Using Laser Speckle Flowgraphy after a Cold Pressor Test
Shogo SATO ; Yuki HASHIMOTO ; Ami SAKAMOTO ; Suzuka NAKANO ; Miki YOSHIMURA ; Toshitaka YAMANOKUCHI ; Takeshi YOSHITOMI
Korean Journal of Ophthalmology 2024;38(2):147-155
Purpose:
Autoregulation of retinal vessels is stronger than that of choroidal vessels. This study aimed to use laser speckle flowgraphy to determine the time course of changes in retinal hemodynamics of healthy eyes after a cold pressor test.
Methods:
This prospective study included 44 right eyes of 44 healthy volunteers (age, 21.7 ± 5.0 years). The mean blur rate, which is a quantitative index of the relative blood flow velocity in the retina, was measured using laser speckle flowgraphy. The vessel average of mean blur rate at the optic nerve head, intraocular pressure, systolic blood pressure, diastolic blood pressure, mean blood pressure, heart rate, and ocular perfusion pressure were evaluated at baseline, immediately after the cold pressor test, and 10, 20, and 30 minutes after the test.
Results:
Immediately after the test (0 minutes), systolic blood pressure, diastolic blood pressure, mean blood pressure, and ocular perfusion pressure were significantly increased compared with those at baseline; however, no changes were observed at 10, 20, and 30 minutes after the test. In contrast, intraocular pressure, heart rate, and the vascular mean blur rate values at the optic nerve head did not change throughout the course of the study.
Conclusions
Sympathetic hyperactivity induced by the cold pressor test increased systemic circulatory dynamics, but not retinal circulatory hemodynamics, suggesting the involvement of vascular autoregulation.
3.Association between high psychological distress and poor oral health-related quality of life (OHQoL) in Japanese community-dwelling people: the Nagasaki Islands Study.
Ai SEKIGUCHI ; Shin-Ya KAWASHIRI ; Hideaki HAYASHIDA ; Yuki NAGAURA ; Kenichi NOBUSUE ; Fumiaki NONAKA ; Hirotomo YAMANASHI ; Masayasu KITAMURA ; Koji KAWASAKI ; Hideki FUKUDA ; Takahiro IWASAKI ; Toshiyuki SAITO ; Takahiro MAEDA
Environmental Health and Preventive Medicine 2020;25(1):82-82
BACKGROUND:
We investigated the association between psychological distress and oral health status/oral health-related quality of life (OHQoL) in Japanese community-dwelling people.
METHODS:
We conducted a cross-sectional study using data from the Nagasaki Islands Study. A total of 1183 (455 men and 728 women) has been analyzed in this study. Psychological distress was measured using the Kessler Psychological Distress Scale (K6). Oral health status was measured by dental examination. The OHQoL was measured using the General Oral Health Assessment Index (GOHAI). We defined the total score of ≥5 points on the K6 as high psychological distress (high-K6 group).
RESULTS:
The multiple linear regression analysis to identify the GOHAI showed that gender, K6, the total number of teeth, the number of dental caries, and visiting a dental clinic within the past 6 months significantly associated with the GOHAI. Among all of these variables, high-K6 (≥ 5) was a substantial contributing factor of the GOHAI (β = - 0.23, 95% Cl - 2.31 to -1.41, p < 0.0001).
CONCLUSIONS
It is likely that the individual with high psychological distress was strongly related to poor OHQoL even in the general population.
Aged
;
Cross-Sectional Studies
;
Dental Caries/epidemiology*
;
Female
;
Humans
;
Independent Living/statistics & numerical data*
;
Japan/epidemiology*
;
Linear Models
;
Male
;
Middle Aged
;
Oral Health/statistics & numerical data*
;
Quality of Life/psychology*
;
Sex Factors
;
Stress, Psychological/epidemiology*
4.Posttraumatic Growth from Bereavement and Other Related Factors among the Family Members of Deceased Cancer Patients at a General Ward
Yumiko TAKEDOMI ; Yasuko TABUCHI ; Yuki KUMAGAI ; Maiko SAKAMOTO ; Ritsuko MAKIHARA
Palliative Care Research 2018;13(2):139-145
Objective: This study aimed to evaluate posttraumatic growth (PTG) from bereavement and other related factors among family members of deceased cancer patients who had been admitted to a general ward. Methods: A self-administered questionnaire was mailed to 42 bereaved family members who agreed to participate in the present study. The time from the death of their loved ones was between one and four years. Results: Of 42, 37 returned their responses. The average PTGI total score was 2.63, which was consistent with previous studies examined the scores at a general hospital and palliative care units. The PTGI was positively correlated with the emotion focus type coping, the recognition estimating support, and the emotional support. The PTGI of the bereaved whose loved ones underwent medical treatment at home was significantly higher than the score of the bereaved whose loved ones passed away at general ward. Conclusion: It is crucial to evaluate whether or not the bereaved experienced a healthy grieving process, and if they received social support. Moreover, it is important to provide the information regarding where the support is offered to the bereaved. Additionally, clinicians need to improve the support system so that the cancer patients can undergo medical treatment at home.
5.Hemolytic Anemia after Mitral Valve Surgery
Yuki Kuroda ; Kenji Minakata ; Kazuhiro Yamazaki ; Hisashi Sakaguchi ; Shingo Hirao ; Shinya Takimoto ; Kazuhisa Sakamoto ; Tomohiro Nakata ; Tadashi Ikeda ; Ryuzo Sakata
Japanese Journal of Cardiovascular Surgery 2016;45(2):67-72
Objective : The aim of this study is to describe a series of patients undergoing reoperation due to hemolytic anemia after mitral valve surgery and assess the mechanisms and surgical outcomes. Methods : Between 2009 and 2014, we performed redo mitral valve surgery in 11 patients who had refractory hemolytic anemia after mitral valve surgery at Kyoto University Hospital. The mean age of the patients was 72.2±6.8 years old, and there were 5 men. Results : Preoperative echocardiography demonstrated that only 3 patients had ≥ grade 3 mitral regurgitation (MR), the rest of the patients had only mild to moderate MR. The mechanisms of severe hemolysis included paravalvular leakage (PVL) after mitral valve replacement (MVR) in 8 patients, structural valve deterioration (SVD) after MVR using a bioprosthesis in one, and residual/recurrent mitral regurgitation after mitral valve plasty (MVP) in two. All the patients except one (re-MVP) underwent MVR. The mean interval between previous operation and current operation was 14.1±9.4 years in post-MVR cases, and 2.0±1.9 years in post-MVP cases. There were three late deaths, one of which was due to cardiac death (exacerbation of heart failure due to pneumonia). There was one patient who required re-MVR for recurrent hemolysis due to PVL after MVR. Conclusion : Although hemolytic anemia after mitral valve surgery is rare, it often requires reoperation regardless of the degree of MR at late follow-up period. Thus, patients after mitral valve surgery should be carefully followed-up.
6.Efficacy and Safety of Bolus 5-Fluorouracil and L-Leucovorin as Salvage Chemotherapy for Oral Fluoropyrimidine-Resistant Unresectable or Recurrent Gastric Cancer: A Single Center Experience.
Tetsuhito MURANAKA ; Satoshi YUKI ; Yoshito KOMATSU ; Kentaro SAWADA ; Kazuaki HARADA ; Yasuyuki KAWAMOTO ; Hiroshi NAKATSUMI ; Naoya SAKAMOTO
Journal of Gastric Cancer 2016;16(3):177-181
PURPOSE: The International Organization for Standardization-5fluorouracil (FU) 10 trial found that bolus 5-FU and l-leucovorin was not inferior to S-1 in the treatment of gastric cancer (GC). Continuous 5-FU and the rapid injection of 5-FU have different anti-cancer effects. Thus, bolus 5-FU and l-leucovorin treatment might be useful for oral FU-resistant GC. MATERIALS AND METHODS: We retrospectively analyzed the medical records of all patients with S-1 or capecitabine-resistant, unresectable, or recurrent GC treated with bolus 5-FU and l-leucovorin between January 2010 and December 2015 at Hokkaido University Hospital. The bolus 5-FU and l-leucovorin regimen consisted of intravenous l-leucovorin (250 mg/m²/2 h) and bolus 5-FU (600 mg/m²) administered once weekly followed by a 2-week rest period; each cycle was repeated every 8 weeks. RESULTS: A total of 14 patients were identified. The disease control rate was 35.7%. The median progression-free survival was 1.6 months (95% confidence interval [CI], 1.3~2.0 months), and the median overall survival was 6.3 months (95% CI, 4.7~7.9 months). No patient died from treatment-related causes. The most common severe adverse event associated with bolus 5-FU and l-leucovorin was neutropenia, which occurred in 21.4% of patients. CONCLUSIONS: Bolus 5-FU and l-leucovorin treatment might be useful for oral FU-resistant GC. We are planning a multi-center prospective phase II trial to evaluate the efficacy and safety of bolus 5-FU and l-leucovorin treatment for pre-treated unresectable or recurrent GC to confirm the results of this limited, retrospective study.
Disease-Free Survival
;
Drug Therapy*
;
Fluorouracil*
;
Humans
;
Leucovorin
;
Medical Records
;
Neutropenia
;
Prospective Studies
;
Retrospective Studies
;
Stomach Neoplasms*
7.Comparative Analysis of Gastrointestinal Microbiota Between Normal and Caudal-Related Homeobox 2 (Cdx2) Transgenic Mice.
Hirotsugu SAKAMOTO ; Takashi ASAHARA ; Osamu CHONAN ; Norikatsu YUKI ; Hiroyuki MUTOH ; Shunji HAYASHI ; Hironori YAMAMOTO ; Kentaro SUGANO
Intestinal Research 2015;13(1):39-49
BACKGROUND/AIMS: Caudal-related homeobox 2 (Cdx2) is expressed in the human intestinal metaplastic mucosa and induces intestinal metaplastic mucosa in the Cdx2 transgenic mouse stomach. Atrophic gastritis and intestinal metaplasia commonly lead to gastric achlorhydria, which predisposes the stomach to bacterial overgrowth. In the present study, we determined the differences in gut microbiota between normal and Cdx2 transgenic mice, using quantitative reverse transcription-polymerase chain reaction (qRT-PCR). METHODS: Twelve normal (control) and 12 Cdx2 transgenic mice were sacrificed, and the gastric, jejunal, ileac, cecal and colonic mucosa, and feces were collected. To quantitate bacterial microbiota, we used real-time qRTPCR with 16S rRNA gene-targeted, species-specific primers. RESULTS: The total numbers of bacteria in the gastric, jejunal, ileac, cecal, and colonic mucosa of the Cdx2 transgenic mice were significantly higher than those of the normal mice. The Bacteroides fragilis group and also Prevotella were not detected in the stomach of the normal mice, although they were detected in the Cdx2 transgenic mice. Moreover, the Clostridium coccoides group, Clostridium leptum subgroup, Bacteroides fragilis group, and Prevotella were not detected in the jejunum or ileum of the normal mice, although they were detected in the Cdx2 transgenic mice. The fecal microbiota of the normal mice was similar to that of the Cdx2 transgenic mice. CONCLUSIONS: Our results showed the differences in composition of gut microbiota between normal and Cdx2 transgenic mice, which may be caused by the development of gastric achlorhydria and intestinal metaplasia in Cdx2 transgenic mice.
Achlorhydria
;
Animals
;
Bacteria
;
Bacteroides fragilis
;
Clostridium
;
Colon
;
Feces
;
Gastritis, Atrophic
;
Genes, Homeobox*
;
Humans
;
Ileum
;
Jejunum
;
Metaplasia
;
Mice
;
Mice, Transgenic*
;
Microbiota*
;
Mucous Membrane
;
Prevotella
;
Stomach
8.Analysis of clinicians’ needs for lifelong learning
Yuki Ideno ; Mami Kikuchi ; Jun’ichi Tamura ; Hironosuke Sakamoto ; Takashi Izumi
Medical Education 2014;45(5):349-355
Introduction: Lifelong learning is important for physicians because of patient safety and the need to constantly improve the quality of medical practice. However, few studies have investigated the specific topics that are required.
Methods: We examined the lifelong learning needs of physicians by means of a self-administered questionnaire that was completed by 595 subjects, who were clinical practitioners working in Gunma Prefecture.
Results: Subjects of all ages needed lectures about the use of evidence-based medicine in medical examinations, clinical studies and the interpretation of epidemiological data, and diagnostic imaging. The younger subjects had a greater need for learning about clinical skills and techniques, such as advanced cardiac life support/intensive care life support, abdominal ultrasonic diagnosis, and cardiac ultrasonic diagnosis. Regarding the ideal times for these lectures, some physicians working at Gunma University Hospital expressed a preference for weekdays after normal business hours, while others preferred the weekends.
Discussion: The lifelong learning needs of physicians were clarified. Because physicians work on different shifts and at different institutions, scheduling training sessions that everyone can attend is difficult, especially for those who are off-campus. The timing of the training sessions, as well as the content of lectures, must be considered. Ideally, sessions should be held more than once to accommodate the busy schedules of physicians. We believe that providing an opportunity for lifelong learning will help attract more people to a career in medicine and thereby help address the physician shortage.
9.Analysis of the needs of clinicians returning to clinical practice:
Yuki Ideno ; Mami Kikuchi ; Jun’Ichi Tamura ; Hironosuke Sakamoto ; Takashi Izumi
Medical Education 2013;44(4):237-242
Introduction and Methods: An immediate effect of the physician shortage is the return to clinical work by physicians who had earlier left. Therefore, the needs of returning physicians were examined by means of a self-administered questionnaire. The subjects were clinicians working in Gunma Prefecture.
Results: About 50% of female physicians and 25% of male physicians had left clinical practice. The reasons given for leaving were “studying abroad” for most male physicians and “pregnancy and child-rearing” for most female physicians. More than 70% of physicians who had left clinical work felt uneasy about returning. The degree of anxiety after returning did not differ significantly between male and female physicians. Problems encountered by returning physicians involved “changes in medicines,” “changes and progress in technology and medical theories,” and deterioration of their “skills and techniques.” Moreover, returning physicians felt a need for increased “practical skills training.”
Discussion: Our study has clarified the needs of physicians returning to clinical work. The development and adoption of a simple system that will help physicians return to clinical practice is required.
10.Supplements use status and related problems
Soichi Shibata ; Hiroko Abe ; Masahide Ikeda ; Tadao Inoue ; Yasunori Sakamoto ; Hiroyuki Fujii ; Ayako Funaki ; Yuki Miyazawa ; Koichiro Atsuda
Japanese Journal of Drug Informatics 2010;11(3):168-172
Object: A multicenter survey was conducted to investigate the status of use of supplements and related problems in patients with diabetes mellitus.
Methods: A questionnaire was mailed to institutions where members of the Drug Information Section, Tokyo Hospital Pharmacists Association, worked, and hospitalized patients with diabetes mellitus were surveyed with a questionnaire.
Results: The response rate of the questionnaire was 85%, and 22 patients reported taking supplements. The most common motivation to purchase supplements was a recommendation from an acquaintance, followed by a recommendation from a family member and TV. Only 9.1% of the patients consulted healthcare professionals when purchasing supplements. The patients who did not follow the dosage and administration instructions and those who were not aware of precautions regarding proper use accounted for 31.8% and 63.6%, respectively. The proportion of patients who did not inform their physicians about the use of supplements was 65.2%, and 4.5% reported some health damage (rash).
Conclusion: Our results revealed that supplements were used without careful consideration and were not administered properly, suggesting that scientific evaluation of efficacy and safety was warranted in future studies. It is important for pharmacists to actively collect information on patient use of supplements and share the information within the medical team.


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