研究者詳細 - 大塚　文男

論文 - 大塚　文男

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Collaboration between generalist and ENT physicians in COVID-19 Omicron variant-induced laryngitis 査読国際誌

Yuki Otsuka, Kou Hasegawa, Yukichika Yamamoto, Asuka Sato, Ryotaro Omichi, Fumio Otsuka

Auris Nasus Larynx 50 ( 4 ) 652 - 653 2022年10月

Effects of Yoga and Mindfulness Programs on Self-Compassion in Medical Professionals during the COVID-19 Pandemic: An Intervention Study 査読国際誌

Tomoko Miyoshi, Hiromi Ida, Yoshito Nishimura, Soichiro Ako, Fumio Otsuka

International Journal of Environmental Research and Public Health 19 ( 19 ) 12523 - 12523 2022年9月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：MDPI AG

Stress among healthcare workers (HCWs) increased during the coronavirus disease 2019 pandemic. We aimed to determine whether a yoga and mindfulness program could alleviate burnout and other psychological and physical distress in HCWs, and how this might affect their empathy for patients. A weekly one-hour yoga and mindfulness program was conducted for three months in 2021. Participants were 18 consenting HCWs and, the final analysis included 13 participants. They responded to online questionnaires before and after the program. We measured salivary cortisol levels before and after the program on the first and last days. Self-measured pulse rates (PRs) were taken before and after each session, which decreased significantly in both cases (before, after the first program: 72, 65 bpm, p < 0.05; before, after the last program: 75, 66, p < 0.05), but salivary cortisol levels did not change. No significant changes were observed in Patient Health Questionnaire-9, Maslach Burnout Inventory, Sense of Coherence, Connor-Davidson Resilience Scale, Self-compassion Scale, or Jefferson Scale of Empathy. However, common humanity, a subscale of self-compassion, increased significantly (before the first program: 5.6, after the last program: 6.5, p < 0.05), and over-identification decreased significantly (7.9, 6.7, p < 0.01). Yoga and mindfulness programs may help improve the sense of common humanity and reduce over-identification in HCWs.

DOI： 10.3390/ijerph191912523

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Secondary autoimmune hypothalamitis with severe memory impairment 7 years after the onset of diabetes insipidus due to lymphocytic hypophysitis: a case report 査読

Takahiro Asada, Shintaro Takenoshita, Mayuko Senda, Koichiro Yamamoto, Ryo Sasaki, Fumio Otsuka, Seishi Terada, Norihito Yamada

BMC Neurology 22 ( 1 ) 2022年9月

掲載種別：研究論文（学術雑誌）出版者・発行元：Springer Science and Business Media LLC

Abstract

Background

Autoimmune hypothalamitis is a very rare neuroendocrine disorder that causes central diabetes insipidus, headache, visual impairment, and sometimes cognitive impairment. Autoimmune hypothalamitis may occur in association with autoimmune hypophysitis, including lymphocytic hypophysitis, or in isolation. It is not known whether autoimmune hypothalamitis and autoimmune hypophysitis are consecutive diseases.

Case presentation

A 52-year-old woman developed autoimmune hypothalamitis 7 years after developing central diabetes insipidus due to lymphocytic hypophysitis, resulting in severe memory impairment. High-dose intravenous methylprednisolone therapy improved her cognitive function and decreased the size of the lesion.

Conclusion

This case presented a unique clinical course, with a long period of time between the onset of autoimmune hypopituitaritis and the development of autoimmune hypothalamitis.

DOI： 10.1186/s12883-022-02891-z

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その他リンク： https://link.springer.com/article/10.1186/s12883-022-02891-z/fulltext.html

Splenomegaly in silent endocarditis 査読

T Ishida, H Hagiya, Y Yamamoto, K Oguni, F Otsuka

QJM: An International Journal of Medicine 115 ( 9 ) 615 - 616 2022年9月

Impact of the cervical cancer awareness months on public interest in Japan: A Google Trends analysis, 2012–2021 査読国際誌

Hideharu Hagiya, Toshihiro Koyama, Fumio Otsuka

Scientific Reports 12 ( 1 ) 15391 - 15391 2022年9月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Springer Science and Business Media LLC

Abstract

The immunization and screening rates for human papillomavirus in Japan are lower than those in other countries. We aimed to evaluate the impact of cervical cancer awareness months on public attention using Google Trends analysis. Between 2012 and 2021, we analyzed the trends in relative search volumes (RSVs) for “Shikyuu-keigan” (cervical cancer in English) in Japan, during the cervical cancer awareness month (CCAM) in January and cervical cancer prevention awareness enhancement month (CCPAEM) in November. We performed a joinpoint regression analysis to identify a statistically significant trend change point. Additionally, we compared the mean RSVs of each awareness month with the rest of the year. Significant trend change points were observed, but none were found in CCAM and CCPAEM periods. Comparison of mean RSVs among CCAM, CCPAEM, and the rest of the months did not suggest any significant increases in RSVs during these awareness periods. In conclusion, CAM and CCPAEM did not raise public interest in cervical cancer in Japan. Although the results are based on internet users, the findings might suggest a need to develop a more effective and attractive approach to achieve the 90-70-90 targets of cervical cancer prevention by 2030.

DOI： 10.1038/s41598-022-19798-x

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その他リンク： https://www.nature.com/articles/s41598-022-19798-x

Idiopathic Plasmacytic Lymphadenopathy Forms an Independent Subtype of Idiopathic Multicentric Castleman Disease 査読

Asami Nishikori, Midori Nishimura, Yoshito Nishimura, Fumio Otsuka, Kanna Maehama, Kumiko Ohsawa, Shuji Momose, Naoya Nakamura, Yasuharu Sato

International Journal of Molecular Sciences 23 ( 18 ) 10301 - 10301 2022年9月

掲載種別：研究論文（学術雑誌）出版者・発行元：MDPI AG

Idiopathic multicentric Castleman disease (iMCD) is a type of Castleman disease that is not related to KSHV/HHV8 infection. Currently, iMCD is classified into iMCD-TAFRO (thrombocytopenia, anasarca, fever, reticulin fibrosis, and organomegaly) and iMCD-NOS (not otherwise specified). The former has been established as a relatively homogeneous disease unit that has been recently re-defined, while the latter is considered to be a heterogeneous disease that could be further divided into several subtypes. In 1980, Mori et al. proposed the concept of idiopathic plasmacytic lymphadenopathy (IPL), a disease presenting with polyclonal hypergammaglobulinemia and a sheet-like proliferation of mature plasma cells in the lymph nodes. Some researchers consider IPL to be a part of iMCD-NOS, although it has not been clearly defined to date. This is the first paper to analyze iMCD-NOS clinicopathologically, to examine whether IPL forms a uniform disease unit in iMCD. Histologically, the IPL group showed prominent plasmacytosis and the hyperplasia of germinal centers, while the non-IPL group showed prominent vascularity. Clinically, the IPL group showed significant thrombocytosis and elevated serum IgG levels compared to the non-IPL group (p = 0.007, p < 0.001, respectively). Pleural effusion and ascites were less common in the IPL group (p < 0.001). The IPL group was more likely to have an indolent clinical course and a good response to the anti-IL-6 receptor antibody, while the non-IPL counterpart frequently required more aggressive medical interventions. Thus, the IPL group is a clinicopathologically uniform entity that forms an independent subtype of iMCD.

DOI： 10.3390/ijms231810301

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感染症-脳神経外科医のためのエッセンス III 脳神経外科と感染症-特殊な病態とトピックス Long COVIDにおける中枢神経・精神関連合併症査読

萩谷英大, 大塚文男

Neurological Surgery 50 ( 5 ) 1071 - 1077 2022年9月

Examining the association between vaccine reactogenicity and antibody titer dynamics after the third dose of BNT162b2 vaccine using a mixed-effects model 査読

Naomi Matsumoto, Hideharu Hagiya, Masanori Nakayama, Masanori Furukawa, Toshiharu Mitsuhashi, Soshi Takao, Fumio Otsuka, Takashi Yorifuji

Journal of Infection and Chemotherapy 2022年9月

Gap between self-evaluation and actual hand hygiene compliance among health-care workers 査読国際誌

Hideharu Hagiya, Ryosuke Takase, Yosuke Sazumi, Yoshito Nishimura, Hiroyuki Honda, Fumio Otsuka

Journal of Infection Prevention 23 ( 5 ) 239 - 242 2022年9月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：SAGE Publications

Hand hygiene (HH) compliance among health-care workers has not satisfactorily improved despite multiple educative approaches. Between October 2019 and February 2020, we performed a self-evaluation test and a direct observation for the compliance of the 5 Moments for Hand Hygiene program advocated by the World Health Organization at two Japanese hospitals. Average percentages of self-evaluated HH compliance were as follows: (i) 76.9% for “Before touching a patient,” (ii) 85.8% for “Before clean/aseptic procedures,” (iii) 95.9% for “After body fluid exposure/risk,” (iv) 84.0% for “After touching a patient,” and (v) 69.2% for “After touching patient surroundings.” On the other hand, actual HH compliance was 11.7% for “Before touching a patient” and 18.0% for “After touching a patient or patient surroundings.” The present study demonstrated a big gap between self-evaluation and actual HH compliance among nurses working at hospitals, indicating the need of further providing the education in infection prevention.

DOI： 10.1177/17571774221094160

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その他リンク： http://journals.sagepub.com/doi/full-xml/10.1177/17571774221094160

Mutual Effects of Orexin and Bone Morphogenetic Proteins on Gonadotropin Expression by Mouse Gonadotrope Cells. 査読国際誌

Yoshiaki Soejima, Nahoko Iwata, Nanako Nakayama, Shinichi Hirata, Yasuhiro Nakano, Koichiro Yamamoto, Atsuhito Suyama, Kohei Oguni, Takahiro Nada, Satoshi Fujisawa, Fumio Otsuka

International journal of molecular sciences 23 ( 17 ) 2022年8月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Orexin plays a key role in the regulation of sleep and wakefulness and in feeding behavior in the central nervous system, but its receptors are expressed in various peripheral tissues including endocrine tissues. In the present study, we elucidated the effects of orexin on pituitary gonadotropin regulation by focusing on the functional involvement of bone morphogenetic proteins (BMPs) and clock genes using mouse gonadotrope LβT2 cells that express orexin type 1 (OX1R) and type 2 (OX2R) receptors. Treatments with orexin A enhanced LHβ and FSHβ mRNA expression in a dose-dependent manner in the absence of GnRH, whereas orexin A in turn suppressed GnRH-induced gonadotropin expression in LβT2 cells. Orexin A downregulated GnRH receptor expression, while GnRH enhanced OX1R and OX2R mRNA expression. Treatments with orexin A as well as GnRH increased the mRNA levels of Bmal1 and Clock, which are oscillational regulators for gonadotropin expression. Of note, treatments with BMP-6 and -15 enhanced OX1R and OX2R mRNA expression with upregulation of clock gene expression. On the other hand, orexin A enhanced BMP receptor signaling of Smad1/5/9 phosphorylation through upregulation of ALK-2/BMPRII among the BMP receptors expressed in LβT2 cells. Collectively, the results indicate that orexin regulates gonadotropin expression via clock gene expression by mutually interacting with GnRH action and the pituitary BMP system in gonadotrope cells.

DOI： 10.3390/ijms23179782

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Site-specific differences in T lymphocyte composition of the gastric mucosa after Helicobacter pylori eradication. 査読国際誌

Masaya Iwamuro, Takahide Takahashi, Natsuki Watanabe, Makoto Abe, Hiroyuki Sakae, Yoshiyasu Kono, Hiromitsu Kanzaki, Takehiro Tanaka, Seiji Kawano, Fumio Otsuka, Yoshiro Kawahara, Hiroyuki Yanai, Hiroyuki Okada

Medicine 101 ( 34 ) e30241 2022年8月

記述言語：英語掲載種別：研究論文（学術雑誌）

In our earlier work, we revealed that inflammation of the lesser curvature of the gastric body and antrum could constitute independent risk factors for gastric cancer development, while inflammation of the greater curvature was not. The aims of this study were as follows: first, to reveal the differences between T lymphocyte populations of the gastric antrum and the greater and lesser curvatures of the gastric body in patients after Helicobacter pylori eradication; second, to analyze the correlation between the composition of the stomach-resident T lymphocytes and time from H. pylori eradication; and third, to evaluate the sex differences in T lymphocyte subsets after H. pylori eradication. To investigate site-specific differences in stomach-resident T lymphocytes after H. pylori eradication, we performed flow cytometry analysis on samples taken from the gastric antrum, greater curvature of the gastric body, and lesser curvature of the gastric body of 20 patients. We also analyzed the correlation between the composition of the stomach-resident T lymphocytes and the time from H. pylori eradication. The lymphocyte subsets of the antrum and lesser curvature of the body were similar. In contrast, compared to those in the greater curvature of the gastric body, CD4+/CD3+ lymphocyte subsets (43.8 ± 19.4% vs 31.7 ± 14.6%) were elevated in the lesser curvature of the body, whereas CD8+/CD3+ (67.1 ± 21.3% vs 80.4 ± 12.0%), CD7+/CD3+ (91.2 ± 4.6% vs 93.7 ± 3.8%), CCR4+/CD3+ (7.7 ± 8.1% vs 10.4 ± 7.0%), CD45RA+/CD3+CD4+ (27.2 ± 24.8% vs 39.5 ± 20.8%), and CD45RA+/CD3+CD4- (14.2 ± 11.1% vs 18.7 ± 11.5) were lower. Linear regression analysis showed a negative correlation between the time after H. pylori eradication and CD4+/CD3+ (P < .05, R2 = 0.198). There were no significant differences between men and women with respect to the lymphocyte populations. These results indicate that there are site-specific differences in lymphocyte composition in the stomach after H. pylori eradication.

DOI： 10.1097/MD.0000000000030241

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Tuberculous aortic aneurysm developed with miliary tuberculosis. 査読国際誌

S Tanaka, H Hagiya, F Otsuka

QJM : monthly journal of the Association of Physicians 115 ( 8 ) 543 - 544 2022年8月

Red blood cell depletion in small‐volume bone marrow processing using manipulation with third‐party red blood cells: A comparison of the performance of the COBE spectra and the spectra Optia systems 査読

Yuichi Sumii, Nobuharu Fujii, Keiko Fujii, Takumi Kondo, Tomohiro Urata, Maiko Kimura, Kana Washio, Hideaki Fujiwara, Noboru Asada, Daisuke Ennishi, Hisakazu Nishimori, Ken‐ichi Matsuoka, Fumio Otsuka, Yoshinobu Maeda

Transfusion 2022年8月

Global public awareness of Castleman disease and TAFRO syndrome between 2015 and 2021: A Google Trends analysis 査読

Yoshito Nishimura, Midori Filiz Nishimura, David C. Fajgenbaum, Frits van Rhee, Yasuharu Sato, Fumio Otsuka

eJHaem 3 ( 3 ) 748 - 753 2022年8月

Postprandial Reactive Hypoglycemia Detected with Premature Ventricular Contraction. 査読国際誌

Hiroyuki Honda, Shuichi Tanaka, Hideharu Hagiya, Fumio Otsuka

QJM : monthly journal of the Association of Physicians 115 ( 10 ) 675 - 676 2022年7月

Prevalence of psychological distress on public health officials amid COVID-19 pandemic. 査読国際誌

Yoshito Nishimura, Tomoko Miyoshi, Hideharu Hagiya, Fumio Otsuka

Asian journal of psychiatry 73 103160 - 103160 2022年7月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVES: While the coronavirus disease 2019 (COVID-19) pandemic has led to increased burnout among frontline healthcare workers (HCWs), little research has been done regarding the potential psychological burden among public health officials who have worked tirelessly to tackle the pandemic from an administrative perspective. This study aimed to determine the prevalence of burnout, depression, and job-related stress in Japanese public health officers amid the COVID-19 pandemic. METHODS: We conducted an anonymous, self-administered web-based cross-sectional survey including basic demographics, work-related questions, the Maslach Burnout Inventory, Patient Health Questionnaire-9, Utrecht Work Engagement Scale-3, and Brief Job Stress Questionnaire. 100 public health officers working in the public health centers (PHCs) in Okayama, Japan, answered the survey in December 2021 when the 5th surge in the number of COVID-19 was over. RESULTS: The prevalence of burnout, depression, and job-related stress was 27%, 43%, and 62%, respectively. The multivariate logistic analysis demonstrated that females, public health nurses, and those who suffered from a lack of support from their workplaces were significantly associated with psychological distress. CONCLUSIONS: While we tend to focus on mitigation plans to help alleviate burnout of frontline HCWs, more focus is needed to help public health officers, and public health nurses, in particular, to alleviate their psychological distress and job-related stress to prevent further staff shortages and secure sustainable health systems.

DOI： 10.1016/j.ajp.2022.103160

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Vancomycin MIC creep progresses in methicillin-resistant Staphylococcus aureus despite the national antimicrobial stewardship campaign: Single facility data in Japan. 査読国際誌

Takumi Fujimori, Hideharu Hagiya, Koji Iio, Tsukasa Higashionna, Ayaka Kakehi, Mami Okura, Hiroshi Minabe, Yukika Yokoyama, Fumio Otsuka, Akihito Higashikage

Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy 28 ( 7 ) 918 - 922 2022年7月

記述言語：英語掲載種別：研究論文（学術雑誌）

BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) is a leading cause of nosocomial and community infections, and vancomycin (VCM) is widely recommended as a first-line therapeutic drug. Minimum inhibitory concentrations (MICs) of VCM ≤2 μg/mL are defined as susceptible, but increases in these levels, known as "VCM MIC creep" have been reported. The aim of this study was to investigate VCM MIC creep during the promotion of a national antimicrobial stewardship campaign. METHODS: We collected data from 2013 to 2020 on S. aureus isolated at the clinical microbiology laboratory at Okayama University Hospital, Japan. We calculated the annual proportions of MRSA isolation rates by MIC levels for nosocomial and community samples and estimated annual percentage changes in the antimicrobial use density of the VCM. RESULTS: Of the 1,716 MRSA isolates, no strains showed intermediate or resistant ranges of VCM MIC levels. By 2020, the proportion of MRSA with an MIC of ≤0.5 μg/mL decreased to 35.4%, while that with an MIC of 1 μg/mL increased to 64.1% over time. The annual percentage changes of the VCM antimicrobial use density significantly increased without any trend change point (average 8.1%, p = 0.035). There was no clear correlation between the VCM AUD and annual proportion of nosocomial MRSA with MIC 1 μg/mL (correlation coefficient 0.48; p value = 0.24). CONCLUSION: We demonstrated a deteriorating situation of VCM MIC creep among MRSA strains isolated at our university hospital during the national antimicrobial stewardship campaign.

DOI： 10.1016/j.jiac.2022.03.017

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Poor vaccine responsiveness towards third-dose mRNA vaccine of COVID-19 in Japanese older people 査読

Hideharu Hagiya, Takao Hikita, Tomohiro Habu, Masaki Asada, Takashi Yorifuji, Shinichi Toyooka, Fumio Otsuka, Masanori Nakayama

Journal of Infection 85 ( 4 ) 436 - 480 2022年7月

Persistent methicillin-resistant Staphylococcus aureus bacteremia in an adult patient with Netherton's syndrome: A case report 査読

Misa Takahashi, Hideharu Hagiya, Shuichi Tanaka, Koichiro Yamamoto, Hiroyuki Honda, Kou Hasegawa, Fumio Otsuka

Journal of Infection and Chemotherapy 28 ( 7 ) 978 - 981 2022年7月

Primary bone lymphoma presenting as fever of unknown origin 査読

Yuki Otsuka, Yasuhiro Nakano, Daisuke Omura, Kou Hasegawa, Fumio Otsuka

Journal of General and Family Medicine 23 ( 4 ) 280 - 281 2022年7月

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