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Arashiro T, Miwa M, Nakagawa H, Takamatsu J, Oba K, Fujimi S, Kikuchi H, Iwasawa T, Kanbe F, Oyama K, Kanai M, Ogata Y, Asakura T, Asami T, Mizuno K, Sugita M, Jinta T, Nishida Y, Kato H, Atagi K, Higaki T, Nakano Y, Tsutsumi T, Doi K, Okugawa S, Ueda A, Nakamura A, Yoshida T, Shimada-Sammori K, Shimizu K, Fujita Y, Okochi Y, Tochitani K, Nakanishi A, Rinka H, Taniyama D, Yamaguchi A, Uchikura T, Matsunaga M, Aono H, Hamaguchi M, Motoda K, Nakayama S, Yamamoto K, Oka H, Tanaka K, Inoue T, Kobayashi M, Fujitani S, Tsukahara M, Takeda S, Stucky A, Suzuki T, Smith C, Hibberd M, Ariyoshi K, Fujino Y, Arima Y, Takeda S, Hashimoto S, Suzuki M. COVID-19 vaccine effectiveness against severe COVID-19 requiring oxygen therapy, invasive mechanical ventilation, and death in Japan: A multicenter case-control study (MOTIVATE study). Vaccine 2024; 42:677-688. [PMID: 38114409 DOI: 10.1016/j.vaccine.2023.12.033] [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: 10/16/2023] [Revised: 12/03/2023] [Accepted: 12/09/2023] [Indexed: 12/21/2023]
Abstract
INTRODUCTION Since the SARS-CoV-2 Omicron variant became dominant, assessing COVID-19 vaccine effectiveness (VE) against severe disease using hospitalization as an outcome became more challenging due to incidental infections via admission screening and variable admission criteria, resulting in a wide range of estimates. To address this, the World Health Organization (WHO) guidance recommends the use of outcomes that are more specific to severe pneumonia such as oxygen use and mechanical ventilation. METHODS A case-control study was conducted in 24 hospitals in Japan for the Delta-dominant period (August-November 2021; "Delta") and early Omicron (BA.1/BA.2)-dominant period (January-June 2022; "Omicron"). Detailed chart review/interviews were conducted in January-May 2023. VE was measured using various outcomes including disease requiring oxygen therapy, disease requiring invasive mechanical ventilation (IMV), death, outcome restricting to "true" severe COVID-19 (where oxygen requirement is due to COVID-19 rather than another condition(s)), and progression from oxygen use to IMV or death among COVID-19 patients. RESULTS The analysis included 2125 individuals with respiratory failure (1608 cases [75.7%]; 99.2% of vaccinees received mRNA vaccines). During Delta, 2 doses provided high protection for up to 6 months (oxygen requirement: 95.2% [95% CI:88.7-98.0%] [restricted to "true" severe COVID-19: 95.5% {89.3-98.1%}]; IMV: 99.6% [97.3-99.9%]; fatal: 98.6% [92.3-99.7%]). During Omicron, 3 doses provided high protection for up to 6 months (oxygen requirement: 85.5% [68.8-93.3%] ["true" severe COVID-19: 88.1% {73.6-94.7%}]; IMV: 97.9% [85.9-99.7%]; fatal: 99.6% [95.2-99.97]). There was a trend towards higher VE for more severe and specific outcomes. CONCLUSION Multiple outcomes pointed towards high protection of 2 doses during Delta and 3 doses during Omicron. These results demonstrate the importance of using severe and specific outcomes to accurately measure VE against severe COVID-19, as recommended in WHO guidance in settings of intense transmission as seen during Omicron.
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Affiliation(s)
- Takeshi Arashiro
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan; Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan; Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom; School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan.
| | - Maki Miwa
- Emergency and Critical Care Center, Tokyo Metropolitan Hiroo Hospital, Tokyo, Japan
| | - Hidenori Nakagawa
- Department of Infectious Diseases, Osaka City General Hospital, Osaka, Japan
| | - Junpei Takamatsu
- Department of Emergency Medicine, Kansai Rosai Hospital, Hyogo, Japan
| | - Kunihiro Oba
- Department of Pediatrics, Showa General Hospital, Tokyo, Japan
| | - Satoshi Fujimi
- Division of Trauma and Surgical Critical Care, Osaka General Medical Center, Osaka, Japan
| | - Hitoshi Kikuchi
- Department of Emergency Medicine, Sagamihara Kyodo Hospital, Kanagawa, Japan
| | - Takamasa Iwasawa
- Department of Cardiology, Yokosuka General Hospital Uwamachi, Kanagawa, Japan
| | - Fumiko Kanbe
- Intensive Care Unit, Ageo Central General Hospital, Saitama, Japan
| | - Keisuke Oyama
- Kawaguchi Cardiovascular and Respiratory Hospital, Saitama, Japan
| | - Masayuki Kanai
- Department of Emergency and Critical Care Medicine, Tokyo Metropolitan Police Hospital, Tokyo, Japan
| | - Yoshitaka Ogata
- Department of Critical Care Medicine, Yao Tokushukai General Hospital, Osaka, Japan
| | - Takanori Asakura
- Department of Respiratory Medicine, Kitasato University Kitasato Institute Hospital, Tokyo, Japan
| | - Takahiro Asami
- Department of Internal Medicine, Sano Kosei General Hospital, Tochigi, Japan
| | - Keiko Mizuno
- Department of Emergency and Critical Care Medicine, Juntendo University Nerima Hospital, Tokyo, Japan
| | - Manabu Sugita
- Department of Emergency and Critical Care Medicine, Juntendo University Nerima Hospital, Tokyo, Japan
| | - Torahiko Jinta
- Department of Pulmonary Medicine, St. Luke's International Hospital, Tokyo, Japan
| | - Yusuke Nishida
- Department of General Internal Medicine and Infectious Diseases, Saitama Medical Center, Saitama, Japan
| | - Hideaki Kato
- Infection Prevention and Control Department, Yokohama City University Hospital, Yokohama, Japan
| | - Kazuaki Atagi
- Division of Critical Care Medicine, Nara Prefecture General Medical Center, Nara, Japan
| | - Taiki Higaki
- Division of Critical Care Medicine, Nara Prefecture General Medical Center, Nara, Japan
| | - Yoshio Nakano
- Department of Internal Medicine, Kinan Hospital, Wakayama, Japan
| | - Takeya Tsutsumi
- Department of Infectious Diseases, The University of Tokyo Hospital, Tokyo, Japan
| | - Kent Doi
- Department of Emergency and Critical Care Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Shu Okugawa
- Department of Infectious Diseases, The University of Tokyo Hospital, Tokyo, Japan
| | - Akihiro Ueda
- Department of Infectious Diseases, Japanese Red Cross Medical Center, Tokyo, Japan
| | - Akira Nakamura
- Department of Internal Medicine, Asahi General Hospital, Chiba, Japan
| | - Toru Yoshida
- Department of Emergency and Critical Care Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Kaoru Shimada-Sammori
- Department of Emergency and Critical Care Medicine, Tokyo Metropolitan TAMA Medical Center, Tokyo, Japan
| | - Keiki Shimizu
- Department of Emergency and Critical Care Medicine, Tokyo Metropolitan TAMA Medical Center, Tokyo, Japan
| | - Yasuo Fujita
- Department of Emergency, Akita Red Cross Hospital, Akita, Japan
| | - Yasumi Okochi
- Department of Respiratory Medicine, Japan Community Health Care Organization Tokyo Yamate Medical Center, Tokyo, Japan
| | - Kentaro Tochitani
- Department of Infectious Diseases, Kyoto City Hospital, Kyoto, Japan
| | - Asuka Nakanishi
- Department of Pulmonary Medicine, Tokyo Metropolitan Hiroo Hospital, Tokyo, Japan
| | - Hiroshi Rinka
- Department of Emergency and Critical Care Medical Center, Osaka City General Hospital, Osaka, Japan
| | - Daisuke Taniyama
- Department of Infectious Diseases, Showa General Hospital, Tokyo, Japan
| | - Asase Yamaguchi
- Division of Trauma and Surgical Critical Care, Osaka General Medical Center, Osaka, Japan
| | - Toshio Uchikura
- Department of Emergency and General Internal Medicine, Yokosuka General Hospital Uwamachi, Kanagawa, Japan
| | - Maiko Matsunaga
- Department of Pharmacy, Tokyo Metropolitan Police Hospital, Tokyo, Japan
| | - Hiromi Aono
- Department of Respiratory Medicine, Tokyo Metropolitan Police Hospital, Tokyo, Japan
| | - Masanari Hamaguchi
- Department of Critical Care Medicine, Yao Tokushukai General Hospital, Osaka, Japan
| | - Kentaro Motoda
- Department of Clinical Research, Yao Tokushukai General Hospital, Osaka, Japan
| | - Sohei Nakayama
- Department of Respiratory Medicine, Kitasato University Kitasato Institute Hospital, Tokyo, Japan
| | - Kei Yamamoto
- Department of General Internal Medicine and Infectious Diseases, Saitama Medical Center, Saitama, Japan
| | - Hideaki Oka
- Department of General Internal Medicine and Infectious Diseases, Saitama Medical Center, Saitama, Japan
| | - Katsushi Tanaka
- Infection Prevention and Control Department, Yokohama City University Hospital, Yokohama, Japan
| | - Takeshi Inoue
- Clinical Research Support Center, Asahi General Hospital, Chiba, Japan
| | - Mieko Kobayashi
- Clinical Research Support Center, Asahi General Hospital, Chiba, Japan
| | - Shigeki Fujitani
- Department of Emergency and Critical Care Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Maki Tsukahara
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Saki Takeda
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Ashley Stucky
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tadaki Suzuki
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Chris Smith
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom; School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan
| | - Martin Hibberd
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Koya Ariyoshi
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan
| | - Yuji Fujino
- Non-Profit Organization Japan ECMO Network, Tokyo, Japan; Department of Anesthesiology and Intensive Care, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yuzo Arima
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shinhiro Takeda
- Kawaguchi Cardiovascular and Respiratory Hospital, Saitama, Japan; Non-Profit Organization Japan ECMO Network, Tokyo, Japan; Non-Profit Organization ICU Collaboration Network (ICON), Tokyo, Japan
| | - Satoru Hashimoto
- Non-Profit Organization Japan ECMO Network, Tokyo, Japan; Non-Profit Organization ICU Collaboration Network (ICON), Tokyo, Japan
| | - Motoi Suzuki
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
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Arashiro T, Arima Y, Kuramochi J, Muraoka H, Sato A, Chubachi K, Oba K, Yanai A, Arioka H, Uehara Y, Ihara G, Kato Y, Yanagisawa N, Nagura Y, Yanai H, Ueda A, Numata A, Kato H, Oka H, Nishida Y, Ishii K, Ooki T, Nidaira Y, Asami T, Jinta T, Nakamura A, Taniyama D, Yamamoto K, Tanaka K, Ueshima K, Fuwa T, Stucky A, Suzuki T, Smith C, Hibberd M, Ariyoshi K, Suzuki M. Immune escape and waning immunity of COVID-19 monovalent mRNA vaccines against symptomatic infection with BA.1/BA.2 and BA.5 in Japan. Vaccine 2023; 41:6969-6979. [PMID: 37839947 DOI: 10.1016/j.vaccine.2023.10.021] [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: 02/16/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/17/2023]
Abstract
BACKGROUND Repeated emergence of variants with immune escape capacity and waning immunity from vaccination are major concerns for COVID-19. We examined whether the surge in Omicron subvariant BA.5 cases was due to immune escape or waning immunity through vaccine effectiveness (VE) evaluation. METHODS A test-negative case-control study was conducted in 16 clinics/hospitals during the BA.1/BA.2-dominant and BA.5-dominant periods. VE against symptomatic infection was estimated after adjusting for age, sex, comorbidity, occupation, testing frequency, prior infection, close contact history, clinic/hospital, week, and preventive measures. Absolute VE (aVE) was calculated for 2/3/4 doses, compared to the unvaccinated. Relative VE (rVE) was calculated, comparing 3 vs 2 and 4 vs 3 doses. RESULTS 13,025 individuals were tested during the BA.1/BA.2-dominant and BA.5-dominant periods with similar baseline characteristics. For BA.1/BA.2, aVE was 52 % (95 %CI:34-66) 14 days-3 months post-dose 2, 42 % (29-52) > 6 months post-dose 2, 71 % (64-77) 14 days-3 months post-dose 3, and 68 % (52-79) 3-6 months post-dose 3. rVE was 49 % (38-57) 14 days-3 months post-dose 3 and 45 % (18-63) 3-6 months post-dose 3. For BA.5, aVE was 56 % (27-73) 3-6 months post-dose 2, 32 % (12-47) > 6 months post-dose 2, 70 % (61-78) 14 days-3 months post-dose 3, 59 % (48-68) 3-6 months post-dose 3, 50 % (29-64) > 6 months post-dose 3, and 74 % (61-83) ≥ 14 days post-dose 4. rVE was 56 % (45-65) 14 days-3 months post-dose 3, 39 % (27-48) 3-6 months post-dose 3, 25 % (-2-45) > 6 months post-dose 3, and 30 % (-6-54) ≥ 14 days post-dose 4. CONCLUSIONS Booster doses initially provided high protection against BA.5 at a level similar to that against BA.1/BA.2. However, the protection seemed shorter-lasting against BA.5, which likely contributed to the surge. Furthermore, rVE post-dose 4 was low even among recent vaccinees. These results support the introduction of variant-containing vaccines and emphasize the need for vaccines with longer duration of protection.
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Affiliation(s)
- Takeshi Arashiro
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan; Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan; Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom; School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan.
| | - Yuzo Arima
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Jin Kuramochi
- Kuramochi Clinic Interpark, Tochigi, Japan; Department of Global Health Promotion, Tokyo Medical and Dental University, Tokyo, Japan
| | | | | | - Kumi Chubachi
- Chubachi Internal Respiratory Medicine Clinic, Tokyo, Japan
| | - Kunihiro Oba
- Department of Pediatrics, Showa General Hospital, Tokyo, Japan
| | - Atsushi Yanai
- Department of General Internal Medicine, St. Luke's International Hospital, Tokyo, Japan
| | - Hiroko Arioka
- Department of General Internal Medicine, St. Luke's International Hospital, Tokyo, Japan
| | - Yuki Uehara
- Department of Clinical Laboratory, St. Luke's International Hospital, Tokyo, Japan; Department of Infectious Diseases, Fujita Health University School of Medicine, Aichi, Japan
| | | | - Yasuyuki Kato
- Department of Infectious Diseases, International University of Health and Welfare Narita Hospital, Chiba, Japan
| | | | | | - Hideki Yanai
- Fukujuji Hospital, Japan Anti-Tuberculosis Association, Kiyose, Japan
| | - Akihiro Ueda
- Department of Infectious Diseases, Japanese Red Cross Medical Center, Tokyo, Japan
| | | | - Hideaki Kato
- Infection Prevention and Control Department, Yokohama City University Hospital, Yokohama, Japan
| | - Hideaki Oka
- Department of General Internal Medicine and Infectious Diseases, Saitama Medical Center, Saitama, Japan
| | - Yusuke Nishida
- Department of General Internal Medicine and Infectious Diseases, Saitama Medical Center, Saitama, Japan
| | - Koji Ishii
- Saitama Sekishinkai Hospital, Saitama, Japan
| | - Takao Ooki
- Saitama Sekishinkai Hospital, Saitama, Japan
| | | | - Takahiro Asami
- Department of Internal Medicine, Sano Kosei General Hospital, Tochigi, Japan
| | - Torahiko Jinta
- Department of Pulmonary Medicine, St. Luke's International Hospital, Tokyo, Japan
| | - Akira Nakamura
- Department of Internal Medicine, Asahi General Hospital, Chiba, Japan
| | - Daisuke Taniyama
- Department of Infectious Diseases, Showa General Hospital, Tokyo, Japan
| | - Kei Yamamoto
- Department of General Internal Medicine and Infectious Diseases, Saitama Medical Center, Saitama, Japan
| | - Katsushi Tanaka
- Infection Prevention and Control Department, Yokohama City University Hospital, Yokohama, Japan
| | | | | | - Ashley Stucky
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tadaki Suzuki
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Chris Smith
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom; School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan
| | - Martin Hibberd
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Koya Ariyoshi
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan
| | - Motoi Suzuki
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
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Noda T, Satoh N, Gittenberger E, Asami T. Left-Right Reversal Recurrently Evolved Regardless of Diaphanous-Related Formin Gene Duplication or Loss in Snails. J Mol Evol 2023; 91:721-729. [PMID: 37747557 PMCID: PMC10598177 DOI: 10.1007/s00239-023-10130-3] [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] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 08/13/2023] [Indexed: 09/26/2023]
Abstract
Bilateria exhibit whole-body handedness in internal structure. This left-right polarity is evolutionarily conserved with virtually no reversed extant lineage, except in molluscan Gastropoda. Phylogenetically independent snail groups contain both clockwise-coiled (dextral) and counterclockwise-coiled (sinistral) taxa that are reversed from each other in bilateral handedness as well as in coiling direction. Within freshwater Hygrophila, Lymnaea with derived dextrality have diaphanous related formin (diaph) gene duplicates, while basal sinistral groups possess one diaph gene. In terrestrial Stylommatophora, dextral Bradybaena also have diaph duplicates. Defective maternal expression of one of those duplicates gives rise to sinistral hatchlings in Lymnaea and handedness-mixed broods in Bradybaena, through polarity change in spiral cleavage of embryos. These findings led to the hypothesis that diaph duplication was crucial for the evolution of dextrality by reversal. The present study discovered that diaph duplication independently occurred four times and its duplicate became lost twice in gastropods. The dextrality of Bradybaena represents the ancestral handedness conserved across gastropods, unlike the derived dextrality of Lymnaea. Sinistral lineages recurrently evolved by reversal regardless of whether diaph had been duplicated. Amongst the seven formin gene subfamilies, diaph has most thoroughly been conserved across eukaryotes of the 14 metazoan phyla and choanoflagellate. Severe embryonic mortalities resulting from insufficient expression of the duplicate in both of Bradybaena and Lymnaea also support that diaph duplicates bare general roles for cytoskeletal dynamics other than controlling spiralian handedness. Our study rules out the possibility that diaph duplication or loss played a primary role for reversal evolution.
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Affiliation(s)
- Takeshi Noda
- Department of Biology, Faculty of Science, Shinshu University, Matsumoto, Japan.
- Marine Genomics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan.
| | - Noriyuki Satoh
- Marine Genomics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan
| | - Edmund Gittenberger
- Naturalis Biodiversity Center, Leiden, Netherlands
- GiMaRIS, Sassenheim, Netherlands
| | - Takahiro Asami
- Department of Biology, Faculty of Science, Shinshu University, Matsumoto, Japan
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4
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Tanaka H, Chubachi S, Namkoong H, Sato Y, Asakura T, Lee H, Azekawa S, Otake S, Nakagawara K, Fukushima T, Watase M, Sakurai K, Kusumoto T, Kondo Y, Masaki K, Kamata H, Ishii M, Kaneko Y, Hasegawa N, Ueda S, Sasaki M, Izumo T, Inomata M, Miyazawa N, Kimura Y, Suzuki Y, Harada N, Ichikawa M, Takata T, Ishikura H, Yoshiyama T, Kokuto H, Murakami K, Sano H, Ueda T, Kuwahara N, Fujiwara A, Ogura T, Inoue T, Asami T, Mutoh Y, Nakachi I, Baba R, Nishi K, Tani M, Kagyo J, Hashiguchi M, Oguma T, Asano K, Nishikawa M, Watanabe H, Okada Y, Koike R, Kitagawa Y, Kimura A, Imoto S, Miyano S, Ogawa S, Kanai T, Fukunaga K. Propensity-Score Matched Analysis of the Effectiveness of Baricitinib in Patients With Coronavirus Disease 2019 (COVID-19) Using Nationwide Real-World Data: An Observational Matched Cohort Study From the Japan COVID-19 Task Force. Open Forum Infect Dis 2023; 10:ofad311. [PMID: 37441355 PMCID: PMC10334380 DOI: 10.1093/ofid/ofad311] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 06/07/2023] [Indexed: 07/15/2023] Open
Abstract
Background To determine the effectiveness of baricitinib in patients with coronavirus disease 2019 (COVID-19), investigate whether baricitinib prevents the need for invasive mechanical ventilation and identify patient subgroups that would benefit from baricitinib. Methods This observational matched-cohort study was conducted by the Japan COVID-19 Task Force, a nationwide multicenter consortium. Patients with COVID-19 aged ≥18 years were identified from 70 hospitals in Japan. Among patients with confirmed COVID-19 from February 2020 to September 2021, those receiving baricitinib were propensity-score matched with controls. Results Among 3309 patients, 144 propensity score-matched pairs were identified. Thirteen (9.0%) patients in the baricitinib group and 27 (18.8%) in the control group required invasive mechanical ventilation during the disease course (odds ratio, 0.43). Although the baricitinib group had more severe disease, there were no significant differences in the intensive care unit admission rates (odds ratio, 1.16) and mortality rates (odds ratio, 0.74) between groups. In subgroup analyses, baricitinib was associated with a significant reduction in the need for invasive mechanical ventilation in patients requiring oxygen support (odds ratio, 0.28), with rapid shadow spread on chest radiography (odds ratio, 0.11), or treated with remdesivir (odds ratio, 0.27), systemic corticosteroids (odds ratio, 0.31), or anticoagulants (odds ratio, 0.17). Conclusions Baricitinib is effective at preventing the need for invasive mechanical ventilation in patients with COVID-19.
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Affiliation(s)
- Hiromu Tanaka
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shotaro Chubachi
- Correspondence: Shotaro Chubachi, MD, PhD, Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan (); Ho Namkoong, MD, PhD, Department of Infectious Diseases, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan ()
| | - Ho Namkoong
- Correspondence: Shotaro Chubachi, MD, PhD, Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan (); Ho Namkoong, MD, PhD, Department of Infectious Diseases, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan ()
| | - Yasunori Sato
- Department of Preventive Medicine and Public Health, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Asakura
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Ho Lee
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shuhei Azekawa
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shiro Otake
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kensuke Nakagawara
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takahiro Fukushima
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Mayuko Watase
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kaori Sakurai
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tatsuya Kusumoto
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yasushi Kondo
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Katsunori Masaki
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hirofumi Kamata
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yuko Kaneko
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naoki Hasegawa
- Department of Infectious Diseases, Keio University School of Medicine, Tokyo, Japan
| | - Soichiro Ueda
- JCHO (Japan Community Health Care Organization) Saitama Medical Center, Internal Medicine, Saitama, Japan
| | - Mamoru Sasaki
- JCHO (Japan Community Health Care Organization) Saitama Medical Center, Internal Medicine, Saitama, Japan
| | | | | | - Naoki Miyazawa
- Department of Respiratory Medicine, Saiseikai Yokohamashi Nanbu Hospital, Yokohama, Japan
| | - Yasuhiro Kimura
- Department of Respiratory Medicine, Saiseikai Yokohamashi Nanbu Hospital, Yokohama, Japan
| | - Yusuke Suzuki
- Department of Respiratory Medicine, Kitasato University Kitasato Institute Hospital, Tokyo, Japan
| | - Norihiro Harada
- Department of Respiratory Medicine, Juntendo University Faculty of Medicine and Graduate School of Medicine, Tokyo, Japan
| | - Masako Ichikawa
- Department of Respiratory Medicine, Juntendo University Faculty of Medicine and Graduate School of Medicine, Tokyo, Japan
| | - Tohru Takata
- Department of Infection Control, Fukuoka University Hospital, Fukuoka, Japan
| | - Hiroyasu Ishikura
- Department of Emergency and Critical Care Medicine, Fukuoka University Faculty of Medicine, Fukuoka, Japan
| | | | | | - Koji Murakami
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hirohito Sano
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tetsuya Ueda
- Department of Respiratory Medicine, Osaka Saiseikai Nakatsu Hospital, Osaka, Japan
| | - Naota Kuwahara
- Internal Medicine, Internal Medicine Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Akiko Fujiwara
- Internal Medicine, Internal Medicine Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Takashi Ogura
- Kanagawa Cardiovascular and Respiratory Center, Yokohama, Japan
| | - Takashi Inoue
- Internal Medicine, Sano Kosei General Hospital, Sano, Japan
| | - Takahiro Asami
- Internal Medicine, Sano Kosei General Hospital, Sano, Japan
| | - Yoshikazu Mutoh
- Department of Infectious Diseases, Tosei General Hospital, Seto, Japan
| | | | - Rie Baba
- Department of Infectious Diseases, Tosei General Hospital, Seto, Japan
| | - Koichi Nishi
- Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Mayuko Tani
- Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | | | | | - Tsuyoshi Oguma
- Division of Pulmonary Medicine, Department of Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Koichiro Asano
- Division of Pulmonary Medicine, Department of Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Masanori Nishikawa
- Department of Respiratory Medicine, Fujisawa City Hospital, Fujisawa, Japan
| | - Hiroki Watanabe
- Department of Respiratory Medicine, Fujisawa City Hospital, Fujisawa, Japan
| | - Yukinori Okada
- Department of Statistical Genetics, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Genome Informatics, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
- Laboratory for Systems Genetics, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
| | - Ryuji Koike
- Medical Innovation Promotion Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuko Kitagawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Akinori Kimura
- Institute of Research, Tokyo Medical and Dental University, Tokyo, Japan
| | - Seiya Imoto
- Division of Health Medical Intelligence, Human Genome Center, the Institute of Medical Science, the University of Tokyo, Tokyo, Japan
| | - Satoru Miyano
- M&D Data Science Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Seishi Ogawa
- Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
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5
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Fujiwara K, Aono A, Asami T, Morimoto K, Kamada K, Morishige Y, Igarashi Y, Chikamatsu K, Murase Y, Yamada H, Takaki A, Mitarai S. In Vitro Synergistic Effects of Omadacycline with Other Antimicrobial Agents against Mycobacterium abscessus. Antimicrob Agents Chemother 2023; 67:e0157922. [PMID: 37154742 PMCID: PMC10269086 DOI: 10.1128/aac.01579-22] [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] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 04/17/2023] [Indexed: 05/10/2023] Open
Abstract
The clinical importance of Mycobacterium abscessus species (MABS) infections has been increasing. However, the standard treatment regimens recommended in the current guidelines often result in unfavorable outcomes. Therefore, we investigated the in vitro activity of omadacycline (OMC), a novel tetracycline, against MABS to explore its potential as a novel therapeutic option. The drug susceptibilities of 40 Mycobacterium abscessus subsp. abscessus (Mab) clinical strains obtained from the sputum of 40 patients from January 2005 to May 2014 were investigated. The MIC results for OMC, amikacin (AMK), clarithromycin (CLR), clofazimine (CLO), imipenem (IPM), rifabutin (RFB), and tedizolid (TZD) alone and their combined effects (with OMC) were examined using the checkerboard method. Additionally, we studied the differences in the effectiveness of the antibiotic combinations based on the colony morphotype of Mab. The MIC50 and MIC90 of OMC alone were 2 and 4 μg/mL, respectively. The combinations of OMC with AMK, CLR, CLO, IPM, RFB, and TZD showed synergy against 17.5%, 75.8%, 25.0%, 21.1%, 76.9%, and 34.4% of the strains, respectively. Additionally, OMC combined with CLO (47.1% versus 9.5%, P = 0.023) or TZD (60.0% versus 12.5%, P = 0.009) showed significantly higher synergy against strains with rough morphotypes than those with smooth morphotypes. In conclusion, the checkerboard analyses revealed that the synergistic effects of OMC were observed most frequently with RFB, followed by CLR, TZD, CLO, IPM, and AMK. Furthermore, OMC tended to be more effective against rough-morphotype Mab strains.
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Affiliation(s)
- Keiji Fujiwara
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
- Department of Basic Mycobacteriosis, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Akio Aono
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Takahiro Asami
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Kozo Morimoto
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
- Department of Clinical Mycobacteriosis, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
- Division of Clinical Research, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Keisuke Kamada
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Yuta Morishige
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Yuriko Igarashi
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Kinuyo Chikamatsu
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Yoshiro Murase
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Hiroyuki Yamada
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Akiko Takaki
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Satoshi Mitarai
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
- Department of Basic Mycobacteriosis, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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6
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Arashiro T, Arima Y, Kuramochi J, Muraoka H, Sato A, Chubachi K, Yanai A, Arioka H, Uehara Y, Ihara G, Kato Y, Yanagisawa N, Ueda A, Kato H, Oka H, Nishida Y, Nidaira Y, Asami T, Jinta T, Nakamura A, Oba K, Taniyama D, Yamamoto K, Tanaka K, Ueshima K, Fuwa T, Stucky A, Suzuki T, Smith C, Hibberd M, Ariyoshi K, Suzuki M. Effectiveness of BA.1- and BA.4/BA. 5-Containing Bivalent COVID-19 mRNA Vaccines Against Symptomatic SARS-CoV-2 Infection During the BA.5-Dominant Period in Japan. Open Forum Infect Dis 2023; 10:ofad240. [PMID: 37351451 PMCID: PMC10284337 DOI: 10.1093/ofid/ofad240] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 04/27/2023] [Indexed: 06/24/2023] Open
Abstract
In this multicenter, prospective, test-negative, case-control study in Japan, the effectiveness of both BA.1-containing and BA.4/BA.5-containing bivalent coronavirus disease 2019 mRNA vaccines against symptomatic infection during the BA.5-dominant period was high compared with no vaccination (65% and 76%) and moderate compared with monovalent vaccines administered over half a year earlier (46% combined).
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Affiliation(s)
- Takeshi Arashiro
- Correspondence: Takeshi Arashiro, MD, Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Toyama 1-23-1, Shinjuku, Tokyo 162-8640, Japan ()
| | - Yuzo Arima
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Jin Kuramochi
- Kuramochi Clinic Interpark, Tochigi, Japan
- Department of Global Health Promotion, Tokyo Medical and Dental University, Tokyo, Japan
| | | | | | - Kumi Chubachi
- Chubachi Internal Respiratory Medicine Clinic, Tokyo, Japan
| | - Atsushi Yanai
- Department of General Internal Medicine, St. Luke's International Hospital, Tokyo, Japan
| | - Hiroko Arioka
- Department of General Internal Medicine, St. Luke's International Hospital, Tokyo, Japan
| | - Yuki Uehara
- Department of Clinical Laboratory, St. Luke's International Hospital, Tokyo, Japan
- Department of Infectious Diseases, Fujita Health University School of Medicine, Aichi, Japan
| | | | - Yasuyuki Kato
- Department of Infectious Diseases, International University of Health and Welfare Narita Hospital, Chiba, Japan
| | | | - Akihiro Ueda
- Department of Infectious Diseases, Japanese Red Cross Medical Center, Tokyo, Japan
| | - Hideaki Kato
- Infection Prevention and Control Department, Yokohama City University Hospital, Yokohama, Japan
| | - Hideaki Oka
- Department of General Internal Medicine and Infectious Diseases, Saitama Medical Center, Saitama, Japan
| | - Yusuke Nishida
- Department of General Internal Medicine and Infectious Diseases, Saitama Medical Center, Saitama, Japan
| | | | - Takahiro Asami
- Department of Internal Medicine, Sano Kosei General Hospital, Tochigi, Japan
| | - Torahiko Jinta
- Department of Pulmonary Medicine, St. Luke's International Hospital, Tokyo, Japan
| | - Akira Nakamura
- Department of Internal Medicine, Asahi General Hospital, Chiba, Japan
| | - Kunihiro Oba
- Department of Pediatrics, Showa General Hospital, Tokyo, Japan
| | - Daisuke Taniyama
- Department of Infectious Diseases, Showa General Hospital, Tokyo, Japan
| | - Kei Yamamoto
- Department of General Internal Medicine and Infectious Diseases, Saitama Medical Center, Saitama, Japan
| | - Katsushi Tanaka
- Infection Prevention and Control Department, Yokohama City University Hospital, Yokohama, Japan
| | | | | | - Ashley Stucky
- Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tadaki Suzuki
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Chris Smith
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan
| | - Martin Hibberd
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Koya Ariyoshi
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan
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7
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Kobayashi K, Ogata A, Hirano T, Asami T, Inoue T. Nonsurgical management of refractory pneumothorax: efficacy of blood patching. Oxf Med Case Reports 2022; 2022:omab136. [PMID: 35083051 PMCID: PMC8787633 DOI: 10.1093/omcr/omab136] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 11/21/2021] [Accepted: 12/04/2021] [Indexed: 11/22/2022] Open
Affiliation(s)
- Keigo Kobayashi
- Internal Medicine, Sano Kosei General Hospital, Tochigi, Japan
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - Akihiko Ogata
- Internal Medicine, Sano Kosei General Hospital, Tochigi, Japan
| | | | - Takahiro Asami
- Internal Medicine, Sano Kosei General Hospital, Tochigi, Japan
| | - Takashi Inoue
- Internal Medicine, Sano Kosei General Hospital, Tochigi, Japan
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8
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Abe K, Chiba Y, Ide K, Yoshimi A, Asami T, Suda A, Odawara T, Hishimoto A. Plasma MMP-9 Levels as the Future Risk of Conversion to Dementia in ApoE4-Positive MCI Patients: Investigation Based on the Alzheimer's Disease Neuroimaging Initiative Database. J Prev Alzheimers Dis 2022; 9:331-337. [PMID: 35543007 DOI: 10.14283/jpad.2022.19] [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] [Indexed: 06/14/2023]
Abstract
BACKGROUND Matrix metalloproteinase 9 (MMP-9) has been reported to be correlated with declines in hippocampal volume and cognitive function in ApoE4-positive MCI patients. OBJECTIVES The present study was aimed to investigate the effects of plasma matrix MMP-9 on the conversion risk between mild cognitive impairment (MCI) patients with and without ApoE4. DESIGN AND SETTING Retrospective observational study using the data extracted from the Alzheimer's Disease Neuroimaging Initiative database. PARTICIPANTS We included 211 ApoE4-positive MCI subjects (ApoE4+ MCI) and 184 ApoE4-negative MCI subjects (ApoE4- MCI). MEASUREMENTS We obtained demographic and data including plasma MMP-9 levels at baseline and longitudinal changes in Clinical Dementia Rating (CDR) up to 15 years. We compared conversion rates between ApoE4+ MCI and ApoE4- MCI by the Log-rank test and calculated the hazard ratio (HR) for covariates including age, sex, educational attainment, drinking and smoking histories, medications, and plasma MMP-9 levels using a multiple Cox regression analysis of ApoE4+ MCI and ApoE4- MCI. RESULTS No significant differences were observed in baseline plasma MMP-9 levels between ApoE4+ MCI and ApoE4- MCI. High plasma MMP-9 levels increased the conversion risk significantly more than low plasma MMP-9 levels (HR, 2.46 [95% CI, 1.31-4.48]) and middle plasma MMP-9 levels (HR, 1.67 [95% CI, 1.04-2.65]) in ApoE4+ MCI, but not in ApoE4- MCI. CONCLUSION Plasma MMP-9 would be the risk of the future conversion to dementia in ApoE4+ MCI.
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Affiliation(s)
- K Abe
- Yuhei Chiba, 3-9 Fukuura Kanazawa-Ku Yokohama Kanagawa 236-0004, Japan, Telephone: +81-45-787-2667, FAX: +81-45-783-2540, E-mail:
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9
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Kuzume K, Koizumi M, Kagata Y, Nishimura K, Kuwabara Y, Okamoto M, Asami T, Murakami Y, Yagi Y, Midoro-Horiuti T. A056 HOW TO DRINK MILK - ASSESSMENT OF AN INTERMITTENT ORAL IMMUNOTHERAPY FOR SEVERE MILK ALLERGY. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.040] [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: 10/19/2022]
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10
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Namkoong H, Omae Y, Asakura T, Ishii M, Suzuki S, Morimoto K, Kawai Y, Emoto K, Oler AJ, Szymanski EP, Yoshida M, Matsuda S, Yagi K, Hase I, Nishimura T, Sasaki Y, Asami T, Shiomi T, Matsubara H, Shimada H, Hamamoto J, Jhun BW, Kim SY, Huh HJ, Won HH, Ato M, Kosaki K, Betsuyaku T, Fukunaga K, Kurashima A, Tettelin H, Yanai H, Mahasirimongkol S, Olivier KN, Hoshino Y, Koh WJ, Holland SM, Tokunaga K, Hasegawa N. Genome-wide association study in patients with pulmonary Mycobacterium avium complex disease. Eur Respir J 2021; 58:13993003.02269-2019. [PMID: 33542050 DOI: 10.1183/13993003.02269-2019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 12/30/2020] [Indexed: 12/26/2022]
Abstract
RATIONALE Nontuberculous mycobacteria (NTM) are environmental mycobacteria that can cause a chronic progressive lung disease. Although epidemiological data indicate potential genetic predisposition, its nature remains unclear. OBJECTIVES We aimed to identify host susceptibility loci for Mycobacterium avium complex (MAC), the most common NTM pathogen. METHODS This genome-wide association study (GWAS) was conducted in Japanese patients with pulmonary MAC and healthy controls, followed by genotyping of candidate single-nucleotide polymorphisms (SNPs) in another Japanese cohort. For verification by Korean and European ancestry, we performed SNP genotyping. RESULTS The GWAS discovery set included 475 pulmonary MAC cases and 417 controls. Both GWAS and replication analysis of 591 pulmonary MAC cases and 718 controls revealed the strongest association with chromosome 16p21, particularly with rs109592 (p=1.64×10-13, OR 0.54), which is in an intronic region of the calcineurin-like EF-hand protein 2 (CHP2). Expression quantitative trait loci analysis demonstrated an association with lung CHP2 expression. CHP2 was expressed in the lung tissue in pulmonary MAC disease. This SNP was associated with the nodular bronchiectasis subtype. Additionally, this SNP was significantly associated with the disease in patients of Korean (p=2.18×10-12, OR 0.54) and European (p=5.12×10-03, OR 0.63) ancestry. CONCLUSIONS We identified rs109592 in the CHP2 locus as a susceptibility marker for pulmonary MAC disease.
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Affiliation(s)
- Ho Namkoong
- Division of Pulmonary Medicine, Dept of Medicine, Keio University School of Medicine, Tokyo, Japan.,Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health (NIH), Bethesda, MD, USA.,JSPS Overseas Research Fellow, Japan Society for the Promotion of Science, Tokyo, Japan.,H. Namkoong and Y. Omae are co-first authors.,H. Namkoong, N. Hasegawa and K. Tokunaga contributed equally to this article as lead authors and supervised the work
| | - Yosuke Omae
- Dept of Human Genetics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Genome Medical Science Project (Toyama), National Center for Global Health and Medicine, Tokyo, Japan.,H. Namkoong and Y. Omae are co-first authors
| | - Takanori Asakura
- Division of Pulmonary Medicine, Dept of Medicine, Keio University School of Medicine, Tokyo, Japan.,Dept of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Dept of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shoji Suzuki
- Division of Pulmonary Medicine, Dept of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kozo Morimoto
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Yosuke Kawai
- Dept of Human Genetics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Genome Medical Science Project (Toyama), National Center for Global Health and Medicine, Tokyo, Japan
| | - Katsura Emoto
- Dept of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Andrew J Oler
- Bioinformatics and Computational Biosciences Branch, Office of Cyber Infrastructure and Computational Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Eva P Szymanski
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Mitsunori Yoshida
- Dept of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shuichi Matsuda
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Kazuma Yagi
- Division of Pulmonary Medicine, Dept of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Isano Hase
- Dept of Respiratory Medicine, National Hospital Organization Utsunomiya Hospital, Tochigi, Japan
| | | | - Yuka Sasaki
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Takahiro Asami
- Division of Pulmonary Medicine, Dept of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tetsuya Shiomi
- Dept of Pulmonary Medicine, Keiyu Hospital, Kanagawa, Japan
| | | | - Hisato Shimada
- Dept of Pulmonary Medicine, Kawasaki Municipal Ida Hospital, Kanagawa, Japan
| | - Junko Hamamoto
- Division of Pulmonary Medicine, Dept of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Byung Woo Jhun
- Division of Pulmonary and Critical Care Medicine, Dept of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Su-Young Kim
- Division of Pulmonary and Critical Care Medicine, Dept of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hee Jae Huh
- Dept of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hong-Hee Won
- Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Samsung Medical Center, Seoul, South Korea
| | - Manabu Ato
- Dept of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Dept of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Koichi Fukunaga
- Division of Pulmonary Medicine, Dept of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Atsuyuki Kurashima
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Hervé Tettelin
- Dept of Microbiology and Immunology, School of Medicine, University of Maryland, Bethesda, MD, USA.,Institute for Genome Sciences, School of Medicine, University of Maryland, Bethesda, MD, USA
| | - Hideki Yanai
- Dept of Clinical Laboratory, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Surakameth Mahasirimongkol
- Medical Genetics Center, Medical Life Sciences Institute, Dept of Medical Sciences, Ministry of Public Health, Nonthaburi, Thailand
| | - Kenneth N Olivier
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Yoshihiko Hoshino
- Dept of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Won-Jung Koh
- Division of Pulmonary and Critical Care Medicine, Dept of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Steven M Holland
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Katsushi Tokunaga
- Dept of Human Genetics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Genome Medical Science Project (Toyama), National Center for Global Health and Medicine, Tokyo, Japan.,H. Namkoong, N. Hasegawa and K. Tokunaga contributed equally to this article as lead authors and supervised the work
| | - Naoki Hasegawa
- Dept of Infectious Diseases, Keio University School of Medicine, Tokyo, Japan.,H. Namkoong, N. Hasegawa and K. Tokunaga contributed equally to this article as lead authors and supervised the work
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11
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Asami T, Aono A, Chikamatsu K, Igarashi Y, Morishige Y, Murase Y, Yamada H, Takaki A, Mitarai S. Efficacy estimation of a combination of triple antimicrobial agents against clinical isolates of Mycobacterium abscessus subsp. abscessus in vitro. JAC Antimicrob Resist 2021; 3:dlab004. [PMID: 34223082 PMCID: PMC8210157 DOI: 10.1093/jacamr/dlab004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 01/04/2021] [Indexed: 11/30/2022] Open
Abstract
Background Mycobacterium abscessus subsp. abscessus (M. abscessus) is a rapidly growing mycobacterium that is resistant to most antibiotics. The number of patients with pulmonary disease caused by M. abscessus is increasing in several regions, and therapy involves long-term antibiotic combination treatments, although no standard treatment regimen has been established. Objectives To examine candidate regimens for maintenance of antimicrobial treatment against M. abscessus by measuring MIC using the three-drug chequerboard method. Methods We evaluated the drug susceptibility of 70 clinical isolates of M. abscessus using the three-drug chequerboard method. We tested the antimycobacterial agents bedaquiline, clofazimine, amikacin, and sitafloxacin (which showed a relatively low MIC range when used as single agents) alone and in combinations. Results The three-drug combinations of bedaquiline/clofazimine/amikacin, and bedaquiline/clofazimine/sitafloxacin were studied. Among isolates for which the fractional inhibitory concentration index (FICI) could be calculated, 29/70 isolates (41%) and 11/70 isolates (16%) showed a synergistic response (FICI ≤0.75) with combined use of bedaquiline/clofazimine/amikacin, or with bedaquiline/clofazimine/sitafloxacin, respectively. Conclusions The combination of bedaquiline with clofazimine plus either amikacin or sitafloxacin may be useful as maintenance regimens when treating pulmonary disease caused by M. abscessus.
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Affiliation(s)
- Takahiro Asami
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-tuberculosis Association, Kiyose, Japan
| | - Akio Aono
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-tuberculosis Association, Kiyose, Japan
| | - Kinuyo Chikamatsu
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-tuberculosis Association, Kiyose, Japan
| | - Yuriko Igarashi
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-tuberculosis Association, Kiyose, Japan
| | - Yuta Morishige
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-tuberculosis Association, Kiyose, Japan
| | - Yoshiro Murase
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-tuberculosis Association, Kiyose, Japan
| | - Hiroyuki Yamada
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-tuberculosis Association, Kiyose, Japan
| | - Akiko Takaki
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-tuberculosis Association, Kiyose, Japan
| | - Satoshi Mitarai
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-tuberculosis Association, Kiyose, Japan.,Basic Mycobacteriosis, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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12
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Páll-Gergely B, Sajan S, Tripathy B, Meng K, Asami T, Ablett JD. Genus-level revision of the Alycaeidae (Gastropoda, Cyclophoroidea), with an annotated species catalogue. Zookeys 2020; 981:1-220. [PMID: 33199958 PMCID: PMC7644702 DOI: 10.3897/zookeys.981.53583] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 04/23/2020] [Accepted: 08/15/2020] [Indexed: 11/30/2022] Open
Abstract
412 species-group names (including 11 replacement names), and 14 genus-group names of the Alycaeidae have been introduced to date. Type materials of 85% (336) of the known species and subspecies were examined, a further 5% (19) of the taxa were studied using available non-type material, and for another 6% (22) the original descriptions were sufficiently detailed to evaluate their taxonomic status. Only 3% of the taxa (12) could not be examined. Special attention was paid to the sculpture of the embryonic whorls and the sutural tube-microtunnel system in order to provide a novel classification for this group. In this study 363 taxa (320 species or 43 subspecies) are accepted within the family Alycaeidae. Of these, 22 have been described by the lead author and his coauthors in previous publications. In addition, there are 18 species that were formerly classified in Cycloryx and now belong to Pincerna due to its synonymy with Cycloryx. Among the remaining 323 species, 209 (65%) are transferred here to another genus, whilst 114 (35%) have remained in their original genus. Seven genera are accepted. While some questions (e.g., the distinction between Pincerna and Alycaeus) remained unanswered, this revision made three main achievements: (1) The Dicharax species were identified based on the absence of spiral striation on the entire shell; (2) the Metalycaeus species were identified based on the spiral striation of the protoconch; (3) and Stomacosmethis was separated from Alycaeus based on the extremely short sutural tube. Five nominal species are being synonymised with other species, and eight species are now treated as subspecies. The following replacement names are proposed: Dioryxurnulaniosiensis Páll-Gergely, nom. nov. for Alycaeusurnulavar.daflaensis Godwin-Austen, 1914; Dioryxurnularotundus Páll-Gergely, nom. nov. for Alycaeusurnulavar.globosus Godwin-Austen, 1914; Pincernacrenilabrisjuttingae Páll-Gergely, nom. nov. for Alycaeuscrenilabrislaevis van Benthem Jutting, 1959; Pincernacrenilabriskorintjiensis Páll-Gergely, nom. nov. for Alycaeuscrenilabrislatecostatus van Benthem Jutting, 1959; Dicharaxconicusjatingaensis Páll-Gergely, nom. nov. for Alycaeusconicusvar.nanus Godwin-Austen, 1914; Metalycaeusgodwinausteni Páll-Gergely, nom. nov. for Alycaeusneglectus Godwin-Austen, 1914; and finally Metalycaeussuhajdai Páll-Gergely, nom. nov. for Alycaeusvarius Godwin-Austen, 1914.
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Affiliation(s)
- Barna Páll-Gergely
- Plant Protection Institute, Centre for Agricultural Research, Herman Ottó út 15, Budapest, H-1022, Hungary Plant Protection Institute, Centre for Agricultural Research of the Hungarian Academy of Sciences (MTA) Budapest Hungary
| | - Sheikh Sajan
- Zoological Survey of India, Prani Vigyan Bhawan, M Block, New Alipore, Kolkata 700053, West Bengal, India Zoological Survey of India Kolkata India.,Wildlife Institute of India, Chandrabani, Dehradun 248 002, Uttarakhand, India Wildlife Institute of India Dehradun India
| | - Basudev Tripathy
- Zoological Survey of India, Prani Vigyan Bhawan, M Block, New Alipore, Kolkata 700053, West Bengal, India Zoological Survey of India Kolkata India
| | - Kaibaryer Meng
- National Zoological Museum of China, Institute of Zoology, Chinese Academy of Sciences, Beijing, China Institute of Zoology, Chinese Academy of Sciences Beijing China
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan Shinshu University Matsumoto Japan
| | - Jonathan D Ablett
- Mollusca Section, Invertebrates Division, Department of Life Sciences, The Natural History Museums, London SW7 5BD, United Kingdom Natural History Museum London United Kingdom
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Arashiro T, Nakamura S, Asami T, Mikuni H, Fujiwara E, Sakamoto S, Miura R, Shionoya Y, Honda R, Furukawa K, Nakamura A, Saito H. SARS-CoV-2 and Legionella co-infection in a person returning from a Nile cruise. J Travel Med 2020; 27:5820898. [PMID: 32297939 PMCID: PMC7184515 DOI: 10.1093/jtm/taaa053] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/07/2020] [Accepted: 04/10/2020] [Indexed: 01/08/2023]
Abstract
We report a case of severe acute respiratory syndrome coronavirus 2 and Legionella co-infection manifesting as pneumonia with gastrointestinal symptoms. The case highlights the importance of differential diagnosis during the COVID-19 pandemic, so we do not miss the opportunity to diagnose other treatable causes of disease with similar symptoms.
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Affiliation(s)
- Takeshi Arashiro
- Division of Infectious Diseases, Department of Internal Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan.,Residency Program, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
| | - Satoshi Nakamura
- Residency Program, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan.,Division of Respiratory Internal Medicine, Department of Internal Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
| | - Takahiro Asami
- Division of Respiratory Internal Medicine, Department of Internal Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
| | - Hatsuko Mikuni
- Division of Respiratory Internal Medicine, Department of Internal Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
| | - Emiyu Fujiwara
- Residency Program, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan.,Department of Emergency Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
| | - So Sakamoto
- Department of Emergency Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
| | - Ryotaro Miura
- Division of Infectious Diseases, Department of Internal Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan.,Residency Program, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
| | - Yosuke Shionoya
- Division of Respiratory Internal Medicine, Department of Internal Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
| | - Ryoichi Honda
- Division of Respiratory Internal Medicine, Department of Internal Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
| | - Keiichi Furukawa
- Division of Infectious Diseases, Department of Internal Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
| | - Akira Nakamura
- Division of Infectious Diseases, Department of Internal Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
| | - Haruhisa Saito
- Division of Respiratory Internal Medicine, Department of Internal Medicine, Asahi General Hospital, I 1326, Asahi City, Chiba 289-2511, Japan
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Schwaha T, Ruthensteiner B, Melzer RR, Asami T, Páll‐Gergely B. Three phyla—Two type specimens—One shell: History of a snail shell revealed by modern imaging technology. J ZOOL SYST EVOL RES 2019. [DOI: 10.1111/jzs.12293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Thomas Schwaha
- Department of Integrative Zoology University of Vienna Vienna Austria
| | | | | | - Takahiro Asami
- Department of Biology Shinshu University Matsumoto Japan
| | - Barna Páll‐Gergely
- Plant Protection Institute, Centre for Agricultural Research Hungarian Academy of Sciences Budapest Hungary
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15
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Kimizuka Y, Hoshino Y, Nishimura T, Asami T, Sakakibara Y, Morimoto K, Maeda S, Nakata N, Abe T, Uno S, Namkoong H, Fujiwara H, Funatsu Y, Yagi K, Fujie T, Ishii M, Inase N, Iwata S, Kurashima A, Betsuyaku T, Hasegawa N. Retrospective evaluation of natural course in mild cases of Mycobacterium avium complex pulmonary disease. PLoS One 2019; 14:e0216034. [PMID: 31022253 PMCID: PMC6483267 DOI: 10.1371/journal.pone.0216034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 04/14/2019] [Indexed: 11/23/2022] Open
Abstract
Background There is no proven management for mild cases of Mycobacterium avium complex (MAC) pulmonary disease, who do not immediately receive treatment and are managed with observation alone, because its long term-natural course, factors predictive of deterioration, and the effect of treating the disease remain unclear. Thus, we sought to investigate the natural course of mild cases of MAC pulmonary disease. Methods We conducted a multicenter retrospective study. Sixty-five patients with mild MAC pulmonary disease in whom treatment was withheld for at least 6 months after diagnosis were retrospectively recruited after a review of 747 medical records. Longitudinal changes in clinical features were evaluated by using a mixed effects model. Results Mean follow-up was 6.9 ± 5.7 years. During the follow-up period, 15 patients (23%) required treatment and 50 (77%) were managed with observation alone. At diagnosis, 65 patients had nodular bronchiectatic disease without fibrocavitary lesions. Among clinical features, mean body mass index (BMI), forced expiratory volume in 1 second as percent of forced vital capacity (%FEV1), nodular lung lesions, and bronchiectasis worsened significantly in the observation group during follow-up. In the treatment group, BMI, and %FEV1 were stable, but bronchiectasis significantly worsened. At diagnosis, the polyclonal MAC infection rate in the treatment group was higher than that in the observation group. Other microbiological factors, such as insertion sequences, did not differ significantly between the groups. Conclusions Mild MAC pulmonary disease progresses slowly but substantially without treatment. Treatment prevents the deterioration of the disease but not the progression of bronchiectasis. Polyclonal MAC infection is a predictor of disease progression.
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Affiliation(s)
- Yoshifumi Kimizuka
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
- Division of Infectious Diseases and Respiratory Medicine, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Yoshihiko Hoshino
- Leprosy Research Center, National Institute of Infectious Diseases, Higashimurayama, Tokyo, Japan
- * E-mail: (YH); (TN)
| | - Tomoyasu Nishimura
- Health Center, Keio University, Shinjuku, Tokyo, Japan
- * E-mail: (YH); (TN)
| | - Takahiro Asami
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Yumi Sakakibara
- Department of Integrated Pulmonology, Tokyo Medical and Dental University, Bunkyo, Tokyo, Japan
| | - Kozo Morimoto
- Respiratory Disease Center, Fukujuji Hospital, Anti-tuberculosis Association, Kiyose, Tokyo, Japan
| | - Shinji Maeda
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Sapporo, Hokkaido, Japan
| | - Noboru Nakata
- Leprosy Research Center, National Institute of Infectious Diseases, Higashimurayama, Tokyo, Japan
| | - Takayuki Abe
- Department of Preventive Medicine and Public Health, Biostatistics Unit at Clinical and Translational Research Center, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Shunsuke Uno
- Center for Infectious Diseases and Infection Control, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Hiroshi Fujiwara
- Center for Infectious Diseases and Infection Control, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Yohei Funatsu
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Toshihide Fujie
- Department of Integrated Pulmonology, Tokyo Medical and Dental University, Bunkyo, Tokyo, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Naohiko Inase
- Department of Integrated Pulmonology, Tokyo Medical and Dental University, Bunkyo, Tokyo, Japan
| | - Satoshi Iwata
- Department of Infectious Diseases, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Atsuyuki Kurashima
- Respiratory Disease Center, Fukujuji Hospital, Anti-tuberculosis Association, Kiyose, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Naoki Hasegawa
- Center for Infectious Diseases and Infection Control, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
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Páll-Gergely B, Szekeres M, Fehér Z, Asami T, Harl J. Evolution of a dextral lineage by left-right reversal in Cristataria
(Gastropoda, Pulmonata, Clausiliidae). J ZOOL SYST EVOL RES 2019. [DOI: 10.1111/jzs.12277] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Barna Páll-Gergely
- Plant Protection Institute; Centre for Agricultural Research; Hungarian Academy of Sciences; Budapest Hungary
| | - Miklós Szekeres
- Institute of Plant Biology; Biological Research Centre of the Hungarian Academy of Sciences; Szeged Hungary
| | - Zoltán Fehér
- Department of Zoology; Hungarian Natural History Museum; Budapest Hungary
| | - Takahiro Asami
- Department of Biology; Shinshu University; Matsumoto Japan
| | - Josef Harl
- Department of Pathobiology; Institute of Pathology and Forensic Veterinary Medicine; University of Veterinary Medicine; Vienna Austria
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Affiliation(s)
- Barna Páll-Gergely
- Plant Protection Institute, Centre for Agricultural Research; Hungarian Academy of Sciences; Budapest Hungary
| | - Takahiro Asami
- Shinshu University; Faculty of Science; Matsumoto Nagano Japan
| | - Péter Sólymos
- Department of Biological Sciences; Alberta Biodiversity Monitoring Institute; Edmonton Alberta Canada
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Noda T, Satoh N, Asami T. Heterochirality results from reduction of maternal diaph expression in a terrestrial pulmonate snail. Zoological Lett 2019; 5:2. [PMID: 30656060 PMCID: PMC6329061 DOI: 10.1186/s40851-018-0120-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 12/26/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Spiral cleavage is a feature of non-ecdysozoan protostomes, in which left-right reversal frequently evolved in gastropod molluscs. In pulmonate gastropods, maternal molecules are responsible for chirality patterning, on which the polarities of visceral and coiling asymmetries depend. In the pond snail, Lymnaea stagnalis (the clade Hygrophila), a frame-shift mutation of one of tandem-duplicated, diaphanous-related formin genes (diaph) resulted in incomplete reversal from dextral to sinistral cleavage. Is this mechanism of chirality regulation common to, or shared with other pulmonates? To answer this question, we examined genes involved in chirality patterning in the land snail, Bradybaena similaris which belongs to the clade Stylommatophora. RESULTS Both dextral and sinistral siblings develop from progeny of a racemic mutant of B. similaris. Differences in maternal mRNAs between the two strains were searched by transcriptome analyses. We found fifty maternal transcripts that exhibited less expression in early embryos of the mutant strain. The most conspicuous was a homolog of diaph. The diaph gene was duplicated in the stylommatophoran ancestor (diaph-a and diaph-b), as in the case of the ancestor of Lymnaea (Lsdiaph1 and Lsdiaph2). The quantity of maternal diaph-b mRNA was drastically reduced in early embryos of the racemic mutant compared to wild-type, while diaph-a expression was at nearly the same level in both strains. Unlike the case of Lsdiaph2, which is frame-shifted to produce truncated peptides in the mutant of L. stagnalis, however, Bsdiaph-b mRNA in the mutant strain is not frame-shifted and most probably produces normal Diaph-b protein. These results suggest the presence of regulatory mechanisms of gene expression for chirality patterning in pulmonate gastropods, although genomic analyses are required for confirmation. CONCLUSIONS Heterochirality resulting from the loss of polarity control in spiral cleavage does not require mutation of the diaph gene in B. similaris. The determination of left-right polarity instead depends on the expression of this diaph gene, which is duplicated in stylommatophoran Bradybaena, as well as in hygrophilan Lymnaea. Our results provide an avenue to identifying a regulatory mechanism that controls the direction of spiral cleavage in gastropods.
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Affiliation(s)
- Takeshi Noda
- Department of Biology, Faculty of Sciences, Shinshu University, Matsumoto, 390-8621 Japan
| | - Noriyuki Satoh
- Marine Genomics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, 904-0495 Japan
| | - Takahiro Asami
- Department of Biology, Faculty of Sciences, Shinshu University, Matsumoto, 390-8621 Japan
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Páll-Gergely B, Unyadi A, Asami T. Enantiomorphs and taxonomy of three conchological species in flat-shelled snails Trichocathaica (Pulmonata, Camaenidae). Zookeys 2019:19-44. [PMID: 30613172 PMCID: PMC6308220 DOI: 10.3897/zookeys.810.29824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 09/18/2018] [Accepted: 12/04/2018] [Indexed: 11/12/2022] Open
Abstract
Biomodal (flat/globular or slender/tall) shell/body shapes are associated with dichotomous (simultaneous reciprocal or non-reciprocal) modes of copulation behaviour in the fully-shelled stylommatophoran snails. In flat-shelled groups that copulate simultaneously reciprocally, no study has found an example of enantiomorphism that persists within a population. However, the original description of a flat camaenid snail, Trichocathaicaamphidroma, noted that it is dextral- or sinistral-coiled. By examination of shell surface morphology, we found that shell specimens classified as those of this species include shells of three different morphological species. Namely, T.amphidroma, Trichocathaicavestita (Pilsbry, 1934), comb. n., and Trichocathaicamacrosquamata Páll-Gergely, sp. n. In each of the three species, both sinistral and dextral shells have been collected from presumably one area. Ethanol-fixed soft bodies of single dextral and sinistral individuals of T.vestita, which were available for the first time for interchiral comparison of genital morphology in the present genus, differed from each other in the pattern of penial microsculpture. They might represent enantiomorphs that have recently diverged in allopatry instead of enantiomorphism within a population or species. However, their shell and genital differences were not discrete enough to divide them taxonomically into two morphologically distinct species. Our results demonstrate the importance of evaluating individual variation relative to differences between incipient species in penial morphology, especially between conchologically indistinguishable enantiomorphs in the flat groups. We revise the taxonomy of the genus Trichocathaica including the above-mentioned new species, and Trichocathaicaputeolata Páll-Gergely, sp. n.
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Affiliation(s)
- Barna Páll-Gergely
- Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary Centre for Agricultural Research, Hungarian Academy of Sciences Budapest Hungary
| | - András Unyadi
- Adria sétány 10G 2/5., Budapest 1148, Hungary Unaffiliated Budapest Hungary
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan Shinshu University Matsumoto Japan
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Morimoto K, Nakagawa T, Asami T, Morino E, Fujiwara H, Hase I, Tsujimoto Y, Izumi K, Hayashi Y, Matsuda S, Murase Y, Yano R, Takasaki J, Betsuyaku T, Aono A, Goto H, Nishimura T, Sasaki Y, Hoshino Y, Kurashima A, Ato M, Ogawa K, Hasegawa N, Mitarai S. Clinico-microbiological analysis of 121 patients with pulmonary Mycobacteroides abscessus complex disease in Japan - An NTM-JRC study with RIT. Respir Med 2018; 145:14-20. [PMID: 30509703 DOI: 10.1016/j.rmed.2018.10.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 04/20/2018] [Revised: 09/10/2018] [Accepted: 10/15/2018] [Indexed: 11/18/2022]
Abstract
RATIONALE No comprehensive analysis has previously been performed to evaluate the clinical aspects of and microbiological evidence associated with Mycobacteroides abscessus complex (MABC) infection in a region, such as Japan, with a low MABC incidence. OBJECTIVES This study aimed to clarify the clinicopathological characteristics of MABC, which included clinical relatedness to erm(41) sequevar, phenotype (as colony morphology and minimum inhibitory concentration), and genotype. METHODS A total of 121 MABC patients (68 with M. abscessus subsp. abscessus and 53 with M. abscessus subsp. massiliense) were recruited into this retrospective clinical-biological study from tertiary hospitals in Japan between 2004 and 2014. RESULTS Approximately 30% of MABC patients had a history of previous nontuberculous mycobacterium (NTM) disease. Furthermore, 24.8% of the patients had another concomitant NTM infection after they were diagnosed with MABC. Fewer than 10% of the patients in the M. abscessus group had T28C in erm(41). While we observed a higher conversion rate for M. massiliense than for M. abscessus (72.4% and 34.8%, respectively, p = 0.002), recurrence remained relatively common for M. massiliense (31.0%). In the M. abscessus patients, the MIC of clarithromycin (CLR) was significantly lower on day 3 in patients with a better treatment response than in refractory patients (The median MIC; 0.75 μg/ml v.s 2.0 μg/ml, p = 0.03). There was no significant relation between clinical manifestations and variable number of tandem repeat genotypes. CONCLUSIONS Because the history and simultaneous isolation of other NTM in MABC infection are relatively common, these information should be carefully translated into clinical actions. The evaluation of early CLR resistance in M. abscessus and the erm(41) functions should be important to improve the treatment strategy.
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Affiliation(s)
- Kozo Morimoto
- Division of Clinical Research, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan; Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan; Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan.
| | - Taku Nakagawa
- Department of Respiratory medicine, National Hospital Organization, Higashinagoya National Hospital, Nagoya, Japan
| | - Takahiro Asami
- Division of Pulmonary Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Eriko Morino
- Department of Respiratory Medicine, Division of Infectious Diseases, National Center for Global Health and Medicine, Tokyo, Japan
| | - Hiroshi Fujiwara
- Division of Pulmonary Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Isano Hase
- Department of Respiratory Medicine, National Hospital Organization, Utsunomiya Hospital, Utsunomiya, Japan
| | - Yoshie Tsujimoto
- Department of Respiratory Medicine, Division of Infectious Diseases, National Center for Global Health and Medicine, Tokyo, Japan
| | - Kiyohiko Izumi
- Department of Epidemiology and Clinical Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan; Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Yuta Hayashi
- Department of Respiratory medicine, National Hospital Organization, Higashinagoya National Hospital, Nagoya, Japan
| | - Shuichi Matsuda
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Yoshiro Murase
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Ryozo Yano
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Jin Takasaki
- Department of Respiratory Medicine, Division of Infectious Diseases, National Center for Global Health and Medicine, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Akio Aono
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Hajime Goto
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | | | - Yuka Sasaki
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Yoshihiko Hoshino
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Atsuyuki Kurashima
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Manabu Ato
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kenji Ogawa
- Department of Respiratory medicine, National Hospital Organization, Higashinagoya National Hospital, Nagoya, Japan
| | - Naoki Hasegawa
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - Satoshi Mitarai
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan; Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
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Yagi K, Asakura T, Namkoong H, Suzuki S, Asami T, Okamori S, Kusumoto T, Funatsu Y, Kamata H, Nishimura T, Ishii M, Betsuyaku T, Hasegawa N. Association between six-minute walk test parameters and the health-related quality of life in patients with pulmonary Mycobacterium avium complex disease. BMC Pulm Med 2018; 18:114. [PMID: 30005658 PMCID: PMC6045883 DOI: 10.1186/s12890-018-0686-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 07/05/2018] [Indexed: 02/07/2023] Open
Abstract
Background Pulmonary Mycobacterium avium complex (pMAC) disease is a chronic, slowly progressive disease. The aim of the present study was to determine the association of six-minute walk test (6MWT) parameters with pulmonary function and the health-related quality of life (HRQL) in patients with pMAC disease. Methods This cross-sectional study included adult patients with pMAC and was conducted at Keio University Hospital. We investigated the relationship of 6MWT parameters with clinical parameters, including pulmonary function, and HRQL, which was assessed using the 36-Item Short Form Health Survey (SF-36) and St. George’s Respiratory Questionnaire (SGRQ). Results In total, 103 consecutive patients with pMAC participated in 6MWT (median age, 64 years; 80 women) and completed SF-36 and SGRQ. The six-minute walk distance (6MWD) showed significant negative and positive correlations with all SGRQ domain scores [ρ = (− 0.54)–(− 0.32)] and the physical component summary (PCS) score (ρ = 0.39) in SF-36, respectively; the opposite was observed for the final Borg scale (FBS) score (all SGRQ scores, ρ = 0.34–0.58; PCS score, ρ = − 0.50). The distance-saturation product showed significant negative and positive correlations with all SGRQ scores [ρ = (− 0.29)–(− 0.55)] and the PCS score (ρ = 0.40), respectively. Multivariate analysis revealed that 6MWD and the FBS score were significant predictors of HRQL. Conclusions Our findings suggest that 6MWD and the FBS score are useful parameters for evaluating HRQL in patients with pMAC. Further studies should investigate the impact of 6WMT parameters on disease progression, treatment responses, and prognosis. Electronic supplementary material The online version of this article (10.1186/s12890-018-0686-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shoji Suzuki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takahiro Asami
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Satoshi Okamori
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tatsuya Kusumoto
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yohei Funatsu
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hirofumi Kamata
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | | | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naoki Hasegawa
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, 35 Shinanomachi Shinjuku, Tokyo, 160-8582, Japan.
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Namkoong H, Ishii M, Fujii H, Yagi K, Asami T, Asakura T, Suzuki S, Hegab AE, Kamata H, Tasaka S, Atarashi K, Nakamoto N, Iwata S, Honda K, Kanai T, Hasegawa N, Koyasu S, Betsuyaku T. Clarithromycin expands CD11b+Gr-1+ cells via the STAT3/Bv8 axis to ameliorate lethal endotoxic shock and post-influenza bacterial pneumonia. PLoS Pathog 2018; 14:e1006955. [PMID: 29621339 PMCID: PMC5886688 DOI: 10.1371/journal.ppat.1006955] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 03/01/2018] [Indexed: 02/07/2023] Open
Abstract
Macrolides are used to treat various inflammatory diseases owing to their immunomodulatory properties; however, little is known about their precise mechanism of action. In this study, we investigated the functional significance of the expansion of myeloid-derived suppressor cell (MDSC)-like CD11b+Gr-1+ cells in response to the macrolide antibiotic clarithromycin (CAM) in mouse models of shock and post-influenza pneumococcal pneumonia as well as in humans. Intraperitoneal administration of CAM markedly expanded splenic and lung CD11b+Gr-1+ cell populations in naïve mice. Notably, CAM pretreatment enhanced survival in a mouse model of lipopolysaccharide (LPS)-induced shock. In addition, adoptive transfer of CAM-treated CD11b+Gr-1+ cells protected mice against LPS-induced lethality via increased IL-10 expression. CAM also improved survival in post-influenza, CAM-resistant pneumococcal pneumonia, with improved lung pathology as well as decreased interferon (IFN)-γ and increased IL-10 levels. Adoptive transfer of CAM-treated CD11b+Gr-1+ cells protected mice from post-influenza pneumococcal pneumonia. Further analysis revealed that the CAM-induced CD11b+Gr-1+ cell expansion was dependent on STAT3-mediated Bv8 production and may be facilitated by the presence of gut commensal microbiota. Lastly, an analysis of peripheral blood obtained from healthy volunteers following oral CAM administration showed a trend toward the expansion of human MDSC-like cells (Lineage−HLA-DR−CD11b+CD33+) with increased arginase 1 mRNA expression. Thus, CAM promoted the expansion of a unique population of immunosuppressive CD11b+Gr-1+ cells essential for the immunomodulatory properties of macrolides. Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of anti-inflammatory myeloid progenitors that expand in response to acute and chronic inflammation as well as in various diseases, such as autoimmune diseases and cancer. The macrolide antibiotic clarithromycin has immunomodulatory effects in various inflammatory diseases, distinct from its antimicrobial effects, but the mechanism underlying these effects is unknown. The present study demonstrates that clarithromycin treatment induces a marked expansion of CD11b+Gr-1+ MDSC-like cells in the spleen and lungs, sufficient to protect mice from LPS-induced lethality and clarithromycin-resistant bacterial pneumonia via increased IL-10 and decreased IFN-γ levels. Clarithromycin-induced CD11b+Gr-1+ cell expansion was dependent on STAT3-mediated Bv8 production. Moreover, expansion of the immunosuppressive MDSC-like cell population was observed following clarithromycin treatment in humans. Collectively, these results suggest that the immunomodulatory effects of clarithromycin can be attributed to the induction of CD11b+Gr-1+ MDSC-like cells via the STAT3/Bv8 axis.
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Affiliation(s)
- Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
- * E-mail:
| | - Hideki Fujii
- Department of Immunology, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takahiro Asami
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shoji Suzuki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Ahmed E. Hegab
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hirofumi Kamata
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Sadatomo Tasaka
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Koji Atarashi
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Nobuhiro Nakamoto
- Division of Gastroenterology and Hepatology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Satoshi Iwata
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
- Department of Infectious Diseases, Keio University School of Medicine, Tokyo, Japan
| | - Kenya Honda
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naoki Hasegawa
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - Shigeo Koyasu
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
- Laboratory for Immune Cell Systems, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
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Asami T, Ishii M, Namkoong H, Yagi K, Tasaka S, Asakura T, Suzuki S, Kamo T, Okamori S, Kamata H, Zhang H, Hegab AE, Hasegawa N, Betsuyaku T. Anti-inflammatory roles of mesenchymal stromal cells during acute Streptococcus pneumoniae pulmonary infection in mice. Cytotherapy 2018; 20:302-313. [PMID: 29397306 DOI: 10.1016/j.jcyt.2018.01.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 05/22/2017] [Revised: 12/30/2017] [Accepted: 01/02/2018] [Indexed: 01/08/2023]
Abstract
BACKGROUND Pneumonia is the fourth leading cause of death worldwide, and Streptococcus pneumoniae is the most commonly associated pathogen. Increasing evidence suggests that mesenchymal stromal cells (MSCs) have anti-inflammatory roles during innate immune responses such as sepsis. However, little is known about the effect of MSCs on pneumococcal pneumonia. METHODS Bone marrow-derived macrophages (BMDMs) were stimulated with various ligands in the presence or absence of MSC-conditioned medium. For in vivo studies, mice intranasally-inoculated with S. pneumoniae were intravenously treated with MSCs or vehicle, and various parameters were assessed. RESULTS After stimulation with toll-like receptor (TLR) 2, TLR9 or TLR4 ligands, or live S. pneumoniae, TNF-α and interleukin (IL)-6 levels were significantly decreased, whereas IL-10 was significantly increased in BMDMs cultured in MSC-conditioned medium. In mice, MSC treatment decreased the number of neutrophils in bronchoalveolar lavage fluid (BALF) after pneumococcal infection, and this was associated with a decrease in myeloperoxidase activity in the lungs. Levels of proinflammatory cytokines, including TNF-α, IL-6, GM-CSF and IFN-γ, were significantly lower in MSC-treated mice, and the bacterial load in the lung after pneumococcal infection was significantly reduced. In addition, histopathologic analysis confirmed a decrease in the number of cells recruited to the lungs; however, lung edema, protein leakage into the BALF and levels of the antibacterial protein lipocalin 2 in the BALF were comparable between the groups. CONCLUSIONS These results indicate that MSCs could represent a potential therapeutic application for the treatment of pneumonia caused by S. pneumoniae.
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Affiliation(s)
- Takahiro Asami
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.
| | - Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Sadatomo Tasaka
- Department of Respiratory Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Takanori Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shoji Suzuki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tetsuro Kamo
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Satoshi Okamori
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hirofumi Kamata
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Haiyue Zhang
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Ahmed E Hegab
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naoki Hasegawa
- Center for Infectious Disease and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
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Yagi K, Morimoto K, Ishii M, Namkoong H, Okamori S, Asakura T, Suzuki S, Asami T, Uwamino Y, Funatsu Y, Fujiwara H, Kamata H, Nishimura T, Betsuyaku T, Kurashima A, Hasegawa N. Clinical characteristics of pulmonary Mycobacterium lentiflavum disease in adult patients. Int J Infect Dis 2017; 67:65-69. [PMID: 29225071 DOI: 10.1016/j.ijid.2017.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 11/21/2017] [Accepted: 12/01/2017] [Indexed: 10/18/2022] Open
Abstract
BACKGROUND Mycobacterium lentiflavum is a slow-growing non-tuberculous Mycobacterium that is often associated with an immunocompromised state and cervical lymphadenitis in young children. However, little is known about the clinical importance of pulmonary infection with M. lentiflavum in adults. METHODS The medical records of all adults who met the diagnostic criteria of pulmonary M. lentiflavum disease at Keio University Hospital and Fukujuji Hospital from 2001 to 2015 were reviewed. In addition, the PubMed database was searched to identify further reported cases in non-HIV adults. RESULTS Five cases of pulmonary M. lentiflavum disease were identified in the medical records search and 11 additional cases were identified in the literature review. Eleven of the total 16 cases were female, and 15 of 16 cases showed a nodular/bronchiectatic pattern on chest computed tomography imaging. No cases showed an aggressive clinical course of pulmonary M. lentiflavum disease, although one patient died of an exacerbation of underlying vasculitis and bacterial pneumonia. CONCLUSIONS The clinical characteristics of pulmonary M. lentiflavum disease in adult patients were identified. This disease mainly affects females, displays a nodular/bronchiectatic pattern on chest computed tomography imaging, and does not demonstrate an aggressive clinical course. Further larger studies are needed to reveal detailed clinical features.
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Affiliation(s)
- Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Kozo Morimoto
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Kiyose, Tokyo, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan.
| | - Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Satoshi Okamori
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Takanori Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Shoji Suzuki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Takahiro Asami
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Yoshifumi Uwamino
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Yohei Funatsu
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hiroshi Fujiwara
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hirofumi Kamata
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | | | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Atsuyuki Kurashima
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Kiyose, Tokyo, Japan
| | - Naoki Hasegawa
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
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Kuzume K, Koizumi M, Okamoto M, Nishimura K, Asami T. P329 Utility and safety of the intermittent oral immunotherapy, step-up method, for severe food allergy patients. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.220] [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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Affiliation(s)
- Min Wu
- School of Life Sciences, Nanjing University, Nanjing, People’s Republic of China
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto, Japan
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Páll-Gergely B, Hunyadi A, Sáng ĐĐ, Naggs F, Asami T. Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera <i>Dicharax</i> and <i>Metalycaeus</i>. Zootaxa 2017; 4331:1-124. [PMID: 29242453 DOI: 10.11646/zootaxa.4331.1.1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Indexed: 11/04/2022]
Abstract
This is the first part of the revision of the Alycaeidae of China, Laos and Vietnam. Here we revise the species hitherto classified in Chamalycaeus Möllendorff, 1897 (genera Dicharax and Metalycaeus in this study). We show that no Chamalycaeus live in the region, and the alycaeid species of the investigated region can be classified into five genera: Alycaeus Baird, 1850, Dicharax Kobelt & Möllendorff, 1900, Dioryx Benson, 1859, Metalycaeus Pilsbry, 1900 and Pincerna Preston, 1907. We propose Dioryx dautzenbergi Páll-Gergely nom. nov. as a replacement name for Alycaeus (Dioryx) major Bavay & Dautzenberg, 1900, non Alycæus (Dioryx) granum var. major Godwin-Austen, 1893. Alycaeus anceyi Mabille, 1887, A. eydouxi Venmans, 1956, A. mouhoti L. Pfeiffer, 1862, A. rolfbrandti Maassen, 2006 and A. vanbuensis Bavay & Dautzenberg, 1900 are retained in Alycaeus. Alycaeus costulosa Bavay & Dautzenberg, 1912 and A. maolanensis Luo, Zhang & Zhuo 2009 were transferred to Pincerna. We examined newly collected specimens and the type specimens of all species with the exception of the following: A. elevatus Heude, 1886, A. expansus Heude, 1890, A. neglectus Heude, 1885, Chamalycaeus libonensis Chen, Li & Luo 2003, C. panshiensis Chen, 1989, C. tangmaiensis Chen & Zhang, 2001, C. zayuensis Zhang, Chen & Zhou, 2008. Fifteen new species are described as follows: Dicharax (?) abdoui Páll-Gergely, n. sp., Dicharax (?) alticola Páll-Gergely & Hunyadi n. sp., Dicharax (?) ellipticus Páll-Gergely n. sp., Dicharax (?) immaculatus Páll-Gergely n. sp., Dicharax bison Páll-Gergely & Hunyadi n. sp., Dicharax draco Páll-Gergely & Hunyadi n. sp., Dicharax imitator Páll-Gergely & Hunyadi n. sp., Dicharax microcostatus Páll-Gergely n. sp., Dicharax micropolitus Páll-Gergely & Hunyadi n. sp., Dicharax robustus Páll-Gergely & Hunyadi, n. sp., Metalycaeus (?) awalycaeoides Páll-Gergely & Hunyadi n. sp., Metalycaeus (?) ibex Páll-Gergely & Hunyadi n. sp., Metalycaeus laosensis Páll-Gergely n. sp., Metalycaeus oharai Páll-Gergely & Hunyadi n. sp., Metalycaeus (?) okuboi Páll-Gergely & Hunyadi, n. sp. A total of twelve names are synonymised with valid species. In this revision we payed special attention to conchological characters hitherto neglected, such as the fine sculpture of the embryonic whorls and the fine structure of the microtunnels along the breathing tube. We described the radula and penis morphology of five Dicharax species.
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Affiliation(s)
- Barna Páll-Gergely
- Former address: Department of Biology, Shinshu University, Matsumoto 390-8621, Japan. Current address: Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman Ottó Street 15, Budapest, H-1022, Hungary.
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Yagi K, Ishii M, Namkoong H, Asami T, Iketani O, Asakura T, Suzuki S, Sugiura H, Yamada Y, Nishimura T, Fujiwara H, Funatsu Y, Uwamino Y, Kamo T, Tasaka S, Betsuyaku T, Hasegawa N. The efficacy, safety, and feasibility of inhaled amikacin for the treatment of difficult-to-treat non-tuberculous mycobacterial lung diseases. BMC Infect Dis 2017; 17:558. [PMID: 28793869 PMCID: PMC5550988 DOI: 10.1186/s12879-017-2665-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [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: 04/19/2017] [Accepted: 08/02/2017] [Indexed: 12/04/2022] Open
Abstract
Background In multidrug regimens, including an intravenous aminoglycoside (e.g. amikacin [AMK]) is recommended for difficult-to-treat non-tuberculous mycobacterial (NTM) lung diseases. We aimed to evaluate the efficacy, safety, and feasibility of inhaled AMK therapy in patients with difficult-to-treat NTM lung diseases in a retrospective chart review. Methods The study population consisted of patients with NTM lung diseases who received combination therapy, including inhaled AMK therapy, at Keio University Hospital (Tokyo, Japan), from January 2014 through May 2016. A total of 26 cases, consisting of 23 Mycobacterium avium complex (MAC) and three Mycobacterium abscessus complex (MABC) infections cases, were included in this study. The efficacy, safety, and feasibility of inhaled AMK therapy were retrospectively investigated. The Research Ethics Committee of Keio University Hospital approved this study, and informed consent was obtained from all patients. Results All 26 patients were culture-positive at enrolment. Twenty-three of the 26 patients (88.5%), including 21/23 MAC patients (91.3%) and 2/3 MABC patients (66.7%), were administered inhaled AMK therapy for >3 months. The proportion of patients who had clinical symptoms, including, cough and sputum, declined after inhalation AMK therapy. Ten of the 23 patients (43.5%) who received AMK inhalation, including 8/21 MAC (38.1%) and 2/2 MABC patients (100%), showed sputum conversion, defined as at least three consecutive negative sputum cultures. Seven of the 23 patients, including, 5/21 MAC and 2/2 MABC patients, showed improvements in high-resolution computed tomography imaging of the chest. In addition, the serum AMK trough levels before the second inhalation were <1.2 μg/mL in all 26 patients, with no occurrence of severe adverse events, such as renal toxicity. One patient (3.8%) experienced auditory toxicity, in the form of tinnitus. However, this symptom was reversible, after temporary interruption of AMK, the patient was able to safely resume the therapy. Conclusions Inhaled AMK therapy is an effective and feasible therapy for difficult-to-treat NTM lung disease. Electronic supplementary material The online version of this article (doi:10.1186/s12879-017-2665-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Takahiro Asami
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Osamu Iketani
- Department of Pharmacy, Keio University Hospital, Shinjuku-ku, Tokyo, Japan
| | - Takanori Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Shoji Suzuki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Hiroaki Sugiura
- Department of Diagnostic Radiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Yoshitake Yamada
- Department of Diagnostic Radiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | | | - Hiroshi Fujiwara
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Yohei Funatsu
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yoshifumi Uwamino
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Tetsuro Kamo
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Sadatomo Tasaka
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Naoki Hasegawa
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
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Páll-Gergely B, Hunyadi A, Asami T. A new diplommatinid genus and two new species from the Philippines (Gastropoda, Caenogastropoda, Cyclophoroidea). Zookeys 2017:1-10. [PMID: 28769693 PMCID: PMC5523359 DOI: 10.3897/zookeys.678.13059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 04/04/2017] [Accepted: 05/10/2017] [Indexed: 12/02/2022] Open
Abstract
A new diplommatinid genus, Luzonocoptis Páll-Gergely & Hunyadi, gen. n. is erected for two new species, Luzonocoptisantenna Páll-Gergely & Hunyadi, sp. n. and L.angulata Páll-Gergely & Hunyadi, sp. n. Both species inhabit the northeastern part of Luzon Island, Philippines. The genus Luzonocoptisgen. n. is mostly characterized by a very slender shell with 14–18 whorls, a strongly expanded peristome, an interrupted, weak columellar lamella, the absence of any additional plicae or lamellae, and a rachidian tooth having five cusps.
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Affiliation(s)
| | | | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan
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Páll-Gergely B, Otani JU, Hosoda T, Asami T, Harl J. A new species of Camaenidae (Gastropoda, Pulmonata) from Nusa Penida and Lombok Islands, Indonesia: novelty in a well-known fauna. Molluscan Research 2017. [DOI: 10.1080/13235818.2017.1344903] [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] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | | | | | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto, Japan
| | - Josef Harl
- Department of Biology, Shinshu University, Matsumoto, Japan
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Harl J, Haring E, Asami T, Sittenthaler M, Sattmann H, Páll-Gergely B. Molecular systematics of the land snail family Orculidae reveal polyphyly and deep splits within the clade Orthurethra (Gastropoda: Pulmonata). Zool J Linn Soc 2017. [DOI: 10.1093/zoolinnean/zlx022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Páll-Gergely B, Jochum A, Asami T. Three new species and a new genus of Hypselostomatidae (Gastropoda: Pulmonata) from Cong Troi Cave, Northern Vietnam. ACTA ZOOL ACAD SCI H 2017. [DOI: 10.17109/azh.63.3.327.2017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Namkoong H, Ishii M, Funatsu Y, Kimizuka Y, Yagi K, Asami T, Asakura T, Suzuki S, Kamo T, Fujiwara H, Tasaka S, Betsuyaku T, Hasegawa N. Theory and strategy for Pneumococcal vaccines in the elderly. Hum Vaccin Immunother 2016; 12:336-43. [PMID: 26406267 PMCID: PMC5049722 DOI: 10.1080/21645515.2015.1075678] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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] [Indexed: 01/04/2023] Open
Abstract
Pneumonia is the fourth-leading cause of death globally, and Streptococcus pneumoniae is the most important causative pathogen. Because the incidence of pneumococcal diseases is likely to increase with the aging society, we should determine an optimal strategy for pneumococcal vaccination. While consensus indicates that 23-valent pneumococcal polysaccharide vaccine prevents invasive pneumococcal diseases (IPD), its effects on community-acquired pneumonia (CAP) remain controversial. Recently, a 13-valent pneumococcal conjugate vaccine (PCV13) was released. The latest clinical study (CAPiTA study) showed that PCV13 reduced vaccine-type CAP and IPD. Based on these results, the Advisory Committee on Immunization Practices recommended initial vaccination with PCV13 for the elderly. Scientific evidence regarding immunosenescence is needed to determine a more ideal vaccination strategy for the elderly with impaired innate and adaptive immunity. Continuing research on the cost effectiveness of new vaccine strategies considering constantly changing epidemiology is also warranted.
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Affiliation(s)
- Ho Namkoong
- a Division of Pulmonary Medicine Department of Medicine ; Keio University School of Medicine ; Tokyo , Japan
| | - Makoto Ishii
- a Division of Pulmonary Medicine Department of Medicine ; Keio University School of Medicine ; Tokyo , Japan
| | - Yohei Funatsu
- a Division of Pulmonary Medicine Department of Medicine ; Keio University School of Medicine ; Tokyo , Japan
| | - Yoshifumi Kimizuka
- a Division of Pulmonary Medicine Department of Medicine ; Keio University School of Medicine ; Tokyo , Japan
| | - Kazuma Yagi
- a Division of Pulmonary Medicine Department of Medicine ; Keio University School of Medicine ; Tokyo , Japan
| | - Takahiro Asami
- a Division of Pulmonary Medicine Department of Medicine ; Keio University School of Medicine ; Tokyo , Japan
| | - Takanori Asakura
- a Division of Pulmonary Medicine Department of Medicine ; Keio University School of Medicine ; Tokyo , Japan
| | - Shoji Suzuki
- a Division of Pulmonary Medicine Department of Medicine ; Keio University School of Medicine ; Tokyo , Japan
| | - Testuro Kamo
- a Division of Pulmonary Medicine Department of Medicine ; Keio University School of Medicine ; Tokyo , Japan
| | - Hiroshi Fujiwara
- b Center for Infectious Diseases and Infection Control; Keio University School of Medicine ; Tokyo , Japan
| | - Sadatomo Tasaka
- a Division of Pulmonary Medicine Department of Medicine ; Keio University School of Medicine ; Tokyo , Japan
| | - Tomoko Betsuyaku
- a Division of Pulmonary Medicine Department of Medicine ; Keio University School of Medicine ; Tokyo , Japan
| | - Naoki Hasegawa
- b Center for Infectious Diseases and Infection Control; Keio University School of Medicine ; Tokyo , Japan
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34
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Páll-Gergely B, Fehér Z, Otani JU, Asami T. An integrative taxonomic approach to infer the systematic position of Chalepotaxis Ancey, 1887 (Gastropoda: Stylommatophora: Helicarionidae). Molluscan Research 2016. [DOI: 10.1080/13235818.2016.1234996] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Zoltán Fehér
- Department of Zoology, Hungarian Natural History Museum, H-1088 Baross u 13, Budapest, Hungary
- Third Zoological Department, Natural History Museum, A-1010 Burgring 7, Vienna, Austria
| | - Jamen Uiriamu Otani
- Independent scholar, Shinmachi 2-2-14, Minakuchi, Koka, Shiga 528-0038, Japan
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan
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Funatsu Y, Tasaka S, Asami T, Namkoong H, Fujiwara H, Iketani O, Yagi K, Kimizuka Y, Ishii M, Nishimura T, Ogata H, Iwata S, Betsuyaku T, Hasegawa N. Pharmacokinetics of intravenous peramivir in the airway epithelial lining fluid of healthy volunteers. Antivir Ther 2016; 21:621-625. [PMID: 27694694 DOI: 10.3851/imp3096] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Some subtypes of influenza virus, such as H5N1 and H7N9, cause severe viral pneumonia, for which the intraluminal concentration of the anti-influenza agent in the airway is critical. However, the pharmacokinetics of peramivir, the only available injectable neuraminidase inhibitor formulation, in the airway epithelial lining fluid (ELF) remains unclear. In this study, we aimed to determine the time course of peramivir in the pharyngeal ELF, bronchial ELF and plasma of healthy volunteers using bronchoscopic microsampling technique. METHODS Six healthy volunteers were studied. After baseline plasma sampling, 0.3 g peramivir was intravenously injected over 0.5 h. ELF was obtained from the upper and lower airways using bronchoscopic microsampling at the end of the infusion (0.5 h) and after 1.0, 1.5, 2.0, 2.5, 3.0, 4.0 and 5.0 h. The concentrations of peramivir in the ELFs and in the plasma were quantified by LC/MS/MS analysis. RESULTS The mean maximum concentration (Cmax) in pharyngeal ELF, bronchial ELF and plasma was 1.20 ±0.42, 9.60 ±2.30 and 50.52 ±17.51 ng/ml, respectively. The penetration ratio at Cmax in pharyngeal and bronchial ELFs was 2.4 and 19.0, respectively. The ratio of the area under the curve from 0 to infinity in pharyngeal and bronchial ELFs was 4.8 and 39.1 mg•min/l, respectively. CONCLUSIONS The time course of peramivir concentration in the ELFs revealed that concentrations above the 50% inhibitory concentration value of influenza were achieved in the upper and lower airways. Therefore, peramivir could be an important treatment option for influenza viral pneumonia.
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Affiliation(s)
- Yohei Funatsu
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Sadatomo Tasaka
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Department of Respiratory Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Takahiro Asami
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroshi Fujiwara
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - Osamu Iketani
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yoshifumi Kimizuka
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | | | - Haruhiko Ogata
- Center for Diagnostic and Therapeutic Endoscopy, Keio University Hospital, Tokyo, Japan
| | - Satoshi Iwata
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naoki Hasegawa
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
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36
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Sato Y, Asami T, Toriyabe Y, Sato T, Teramae N, Nishizawa S. Pteridine Derivatives Modified with a Guanidine for Binding and Sensing an Orphan Guanine in RNA Duplexes. CHEM LETT 2016. [DOI: 10.1246/cl.160425] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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37
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Páll-Gergely B, Naggs F, Asami T. Novel shell device for gas exchange in an operculate land snail. Biol Lett 2016; 12:rsbl.2016.0151. [PMID: 27405378 DOI: 10.1098/rsbl.2016.0151] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 06/19/2016] [Indexed: 11/12/2022] Open
Abstract
The operculum of terrestrial snails tightly seals the shell aperture providing protection from predators and body-water loss. To allow respiration with a closed operculum, operculate land snails repeatedly evolved shell devices such as tubes or channels that open to the air. In all Asian members of the Alycaeidae, an externally closed tube lies along the suture behind the aperture that possesses a small internal opening into the last whorl at the tube's anterior end. However, this structure presents a paradox: how is gas exchanged through an externally closed tube? Here we show that many microtunnels open into the tube and run beneath radial ribs along the growth line of the last whorl in Alycaeus conformis These tunnels open to the outside of the shell surface near the umbilicus. Examination under high magnification revealed that the outermost shell layer forms these tunnels only in the whorl range beneath the sutural tube. Each tunnel (ca 16 µm diameter) is far narrower than any known metazoan parasite. These findings support our hypothesis that the externally closed sutural tube functions with microtunnels as a specialized apparatus for predator-free gas exchange with minimal water loss when the operculum seals the aperture.
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Affiliation(s)
| | - Fred Naggs
- Life Sciences Department, Natural History Museum, Cromwell Road, London SW7 5BD, UK
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan
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38
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Páll-Gergely B, Muratov IV, Asami T. The family Plectopylidae (Gastropoda, Pulmonata) in Laos with the description of two new genera and a new species. Zookeys 2016:1-26. [PMID: 27408542 PMCID: PMC4926634 DOI: 10.3897/zookeys.592.8118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 04/26/2016] [Indexed: 11/29/2022] Open
Abstract
Previously only a single plectopylid species, Helixlaomontana L. Pfeiffer, 1862 was reported from Laos. Here we erect Naggsia Páll-Gergely & Muratov, gen. n. for Helixlaomontana based on the description of its reproductive anatomy and radula. Another species, Hunyadiscussaurini Páll-Gergely, gen. & sp. n. is described from Northern Laos based on conchological data. Helix (Plectopylis) andersoni Blanford, 1869, which is known from the Burmese-Chinese border region, is also classified within Hunyadiscus Páll-Gergely, gen. n. A third species, Gudeodiscus (Gudeodiscus) messageriraheemi Páll-Gergely & Hunyadi, 2015 is reported from Laos for the first time. The new localities represent the westernmost sites of the genus Gudeodiscus. The reproductive anatomy of the latter species is described.
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Affiliation(s)
| | - Igor V Muratov
- KwaZulu-Natal Museum, P. Bag 9070, Pietermaritzburg 3200, South Africa; School of Life Sciences, University of KwaZulu-Natal, Scottsville, 3206, South Africa
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan
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Suzuki S, Morino E, Ishii M, Namkoong H, Yagi K, Asakura T, Asami T, Fujiwara H, Uwamino Y, Nishimura T, Tasaka S, Betsuyaku T, Takasaki J, Iwata S, Hasegawa N. Clinical characteristics of pulmonary Mycobacterium scrofulaceum disease in 2001-2011: A case series and literature review. J Infect Chemother 2016; 22:611-6. [PMID: 27406572 DOI: 10.1016/j.jiac.2016.06.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 05/10/2016] [Accepted: 06/12/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND Mycobacterium scrofulaceum is a well-known pathogen associated with cervical lymphadenitis in children. However, pulmonary M. scrofulaceum disease is a rare condition with unknown clinical features. The present study aimed to clarify the clinical features of pulmonary M. scrofulaceum disease described in recent cases and reports. METHODS We reviewed the medical records of all adult patients with pulmonary M. scrofulaceum disease at Keio University Hospital and the National Center for Global Health and Medicine Center Hospital between 2001 and 2011. We also conducted a review of the PubMed database to identify additional cases of pulmonary M. scrofulaceum disease in adults. RESULTS Our study identified 8 cases of pulmonary M. scrofulaceum disease at the 2 identified institutions during our study period. Most cases were diagnosed in middle-aged and elderly men with underlying pulmonary diseases such as chronic obstructive pulmonary disease and Mycobacterium avium complex lung disease, as well as those with a history of pulmonary tuberculosis. In contrast, most previously reported cases identified through our literature review had a history of dust inhalation or underlying silicosis. Three of 8 cases at our institutions and 20 of 23 cases from the literature were treated with combination therapies. CONCLUSIONS We conclude that in the recent histories of our institutions, pulmonary M. scrofulaceum disease has mainly occurred in patients with chronic pulmonary diseases. We further conclude that combination therapies that include clarithromycin might yield better patient outcomes.
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Affiliation(s)
- Shoji Suzuki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Eriko Morino
- Department of Respiratory Medicine, National Center for Global Health and Medicine, Tokyo, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.
| | - Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takahiro Asami
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroshi Fujiwara
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - Yoshifumi Uwamino
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | | | - Sadatomo Tasaka
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Jin Takasaki
- Department of Respiratory Medicine, National Center for Global Health and Medicine, Tokyo, Japan
| | - Satoshi Iwata
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan; Department of Infectious Diseases, Keio University School of Medicine, Tokyo, Japan
| | - Naoki Hasegawa
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
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Páll-Gergely B, Asami T. A new species of Gudeodiscus Páll-Gergely, 2013 from China, with extraordinary conchological and anatomical features (Gastropoda, Pulmonata, Plectopylidae). Zookeys 2016:1-19. [PMID: 27081330 PMCID: PMC4820089 DOI: 10.3897/zookeys.564.6560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 01/16/2016] [Indexed: 11/12/2022] Open
Abstract
A new species of the Plectopylidae, Gudeodiscuslongiplica is described from northern Guangxi Province, southern China. The shell, anatomical and radular characters are figured and described. This new species is characterized by long plicae on its parietal shell wall, which have not been observed in any other Gudeodiscus species. In contrast, the long parietal plicae are characteristic for the genera Plectopylis and Chersaecia, which mainly inhabit Thailand and Myanmar. These two genera are, however, only distantly related to the new species, as other characters (anatomy, protoconch sculpture, parietal plicae) suggest. The male portion of the genital structure of the new species is characterized by two separate penial caeca with different lengths, but similar in outer and inner structure. The relevance of this anatomical character is discussed. Gudeodiscuslongiplicasp. n. occurs sympatrically with Gudeodiscussoosi Páll-Gergely, 2013. The anatomy and radula characters of the latter species are also described and figured.
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Affiliation(s)
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan
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41
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Abstract
Specialized predator-prey interactions can be a driving force for their coevolution. Southeast Asian snail-eating snakes (Pareas) have more teeth on the right mandible and specialize in predation on the clockwise-coiled (dextral) majority in shelled snails by soft-body extraction. Snails have countered the snakes' dextral-predation by recurrent coil reversal, which generates diverse counterclockwise-coiled (sinistral) prey where Pareas snakes live. However, whether the snake predator in turn evolves any response to prey reversal is unknown. We show that Pareas carinatus living with abundant sinistrals avoids approaching or striking at a sinistral that is more difficult and costly to handle than a dextral. Whenever it strikes, however, the snake succeeds in predation by handling dextral and sinistral prey in reverse. In contrast, P. iwasakii with little access to sinistrals on small peripheral islands attempts and frequently misses capturing a given sinistral. Prey-handedness recognition should be advantageous for right-handed snail-eating snakes where frequently encountering sinistrals. Under dextral-predation by Pareas snakes, adaptive fixation of a prey population for a reversal gene instantaneously generates a sinistral species because interchiral mating is rarely possible. The novel warning, instead of sheltering, effect of sinistrality benefitting both predators and prey could further accelerate single-gene ecological speciation by left-right reversal.
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Affiliation(s)
- Patchara Danaisawadi
- Biological Science Program, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.,Animal Systematics Research Unit, Department of Biology, Chulalongkorn University, Bangkok 10330, Thailand
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan
| | - Hidetoshi Ota
- Institute of Natural and Environmental Sciences, University of Hyogo, and Museum of Nature and Human Activities, Hyogo 669-1546, Japan
| | - Chirasak Sutcharit
- Animal Systematics Research Unit, Department of Biology, Chulalongkorn University, Bangkok 10330, Thailand
| | - Somsak Panha
- Animal Systematics Research Unit, Department of Biology, Chulalongkorn University, Bangkok 10330, Thailand
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42
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Páll-Gergely B, Budha PB, Naggs F, Backeljau T, Asami T. Review of the genus Endothyrella Zilch, 1960 with description of five new species (Gastropoda, Pulmonata, Plectopylidae). Zookeys 2015:1-70. [PMID: 26692792 PMCID: PMC4668899 DOI: 10.3897/zookeys.529.6139] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 10/07/2015] [Indexed: 11/12/2022] Open
Abstract
All known taxa of the genus Endothyrella Zilch, 1960 (family Plectopylidae) are reviewed. Altogether 23 Endothyrella species are recognized. All species are illustrated and whenever possible, photographs of the available type specimens are provided. Five new species are described: Endothyrellaangulata Budha & Páll-Gergely, sp. n., Endothyrelladolakhaensis Budha & Páll-Gergely, sp. n. and Endothyrellanepalica Budha & Páll-Gergely, sp. n. from Nepal, Endothyrellarobustistriata Páll-Gergely, sp. n. from the Naga Hills, India, and Endothyrellainexpectata Páll-Gergely, sp. n. from Sichuan, China. Helix (Plectopylis) munipurensis Godwin-Austen, 1875 is synonymized with Helix (Plectopylis) serica Godwin-Austen, 1875, and Plectopylis (Endothyra) gregorsoni Gude, 1915 is synonymized with Helix (Plectopylis) macromphalus W. Blanford, 1870. Plectopylisplectostomavar.exerta Gude, 1901 is a synonym of Plectopylisplectostomavar.tricarinata Gude, 1896, which is a species in its own right. Five species of the genus Chersaecia viz. Plectopylis (Chersaecia) bedfordi Gude, 1915, Helix (Plectopylis) brahma Godwin-Austen, 1879, Helix (Plectopylis) Oglei Godwin-Austen, 1879, Helix (Plectopylis) serica Godwin-Austen, 1875, and Plectopylis (Endothyra) williamsoni Gude, 1915 are moved to Endothyrella. The holotype of Plectopylishanleyi Godwin-Austen, 1879 seems to be lost; therefore, Plectopylishanleyi is considered to be a nomen dubium.
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Affiliation(s)
| | - Prem B Budha
- Central Department of Zoology, Tribhuvan University, Kirtipur, Kathmandu, Nepal ; University of Antwerp, Evolutionary Ecology Group Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Fred Naggs
- Natural History Museum, Cromwell Road London, SW7 5BD, UK
| | - Thierry Backeljau
- Royal Belgian Institute of Natural Sciences, Vautierstraat 29, B-1000 Brussels, Belgium ; University of Antwerp, Evolutionary Ecology Group Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan
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Asakura T, Funatsu Y, Ishii M, Namkoong H, Yagi K, Suzuki S, Asami T, Kamo T, Fujiwara H, Uwamino Y, Nishimura T, Tasaka S, Betsuyaku T, Hasegawa N. Health-related quality of life is inversely correlated with C-reactive protein and age in Mycobacterium avium complex lung disease: a cross-sectional analysis of 235 patients. Respir Res 2015; 16:145. [PMID: 26635226 PMCID: PMC4668618 DOI: 10.1186/s12931-015-0304-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 11/19/2015] [Indexed: 01/08/2023] Open
Abstract
Background Mycobacterium avium complex (MAC) lung diseases generally cause chronic disease in immunocompetent hosts. Although a few studies have examined health-related quality of life (HRQL) in patients with MAC lung disease, there have been no large studies. This study aimed to evaluate HRQL and its correlation with clinical outcomes in MAC lung disease. Methods A cross-sectional study was conducted at Keio University Hospital to investigate the factors associated with HRQL in pulmonary nontuberculous mycobacterial diseases. MAC lung diseases were diagnosed according to the 2007 ATS/IDSA guidelines for nontuberculous mycobacterial diseases. The 36-item short form health survey (SF-36) was administered to assess clinical outcomes. Clinical variables included treatment status, latest haematological data, and bacterial smear and culture results. Results The SF-36 scores for the 235 patients (median age, 69 years; 45 men and 190 women) with MAC lung disease, except for the bodily pain and mental health subscale scores, were significantly lower than the Japanese population norms. In the multivariable analyses, current treatment for MAC and a positive sputum smear or culture within the past year were significantly associated with lower SF-36 scores. C-reactive protein (CRP) and age showed stronger inverse correlations with SF-36 scores. Conclusions HRQL, especially the physical component, was impaired in patients with MAC lung diseases; this appears to be related with current treatment status, positive sputum smear or culture within the previous year, and particularly CRP and age. Further studies including qualitative assessments are needed to investigate the efficacy of CRP as a marker for progression or treatment response in MAC lung disease. Trial registration Clinical trial registered with UMIN (UMIN000007964).
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Affiliation(s)
- Takanori Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Yohei Funatsu
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Shoji Suzuki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Takahiro Asami
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Tetsuro Kamo
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Hiroshi Fujiwara
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan.
| | - Yoshifumi Uwamino
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan.
| | | | - Sadatomo Tasaka
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Naoki Hasegawa
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan.
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Takahashi S, Ishii M, Namkoong H, Hegab AE, Asami T, Yagi K, Sasaki M, Haraguchi M, Sato M, Kameyama N, Asakura T, Suzuki S, Tasaka S, Iwata S, Hasegawa N, Betsuyaku T. Pneumococcal Infection Aggravates Elastase-Induced Emphysema via Matrix Metalloproteinase 12 Overexpression. J Infect Dis 2015; 213:1018-30. [PMID: 26563237 DOI: 10.1093/infdis/jiv527] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 08/21/2015] [Accepted: 10/27/2015] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Acute exacerbation of chronic obstructive pulmonary disease (COPD)--typically caused by bacterial or viral infection--is associated with poor prognosis and emphysema progression through unknown mechanisms. We aimed to elucidate the mechanisms responsible for the poor prognosis and emphysema progression associated with COPD exacerbation. METHODS We established a mouse model mimicking acute human COPD exacerbation, wherein mice with elastase-induced emphysema were intranasally infected with Streptococcus pneumoniae. RESULTS In mice with elastase-induced emphysema, infection with S. pneumoniae resulted in increased mortality, an increased number of inflammatory cells in bronchoalveolar lavage fluid (BALF), and increased matrix metalloproteinase 12 (MMP-12) production in the lungs, as well as enhanced emphysema progression. The increased MMP-12 production was mostly due to alveolar type II cells, alveolar macrophages, and lymphocytes that aggregated around vessels and bronchioles. Dexamethasone treatment suppressed the mortality rate and number of inflammatory cells in BALF but not emphysema progression, possibly owing to the failure of MMP-12 suppression in the lungs, whereas treatment with the MMP inhibitor ONO-4817 dramatically suppressed both mortality rate and emphysema progression. CONCLUSIONS These results suggest that MMP-12 production during COPD exacerbation results in increased mortality and emphysema progression. Our study identifies MMP-12 as a target to prevent further aggravation of COPD.
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Affiliation(s)
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine
| | - Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine
| | - Ahmed E Hegab
- Division of Pulmonary Medicine, Department of Medicine
| | | | - Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine
| | - Mamoru Sasaki
- Division of Pulmonary Medicine, Department of Medicine
| | | | - Minako Sato
- Division of Pulmonary Medicine, Department of Medicine
| | | | | | - Shoji Suzuki
- Division of Pulmonary Medicine, Department of Medicine
| | | | - Satoshi Iwata
- Department of Infectious Diseases Center for Infectious Disease and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - Naoki Hasegawa
- Center for Infectious Disease and Infection Control, Keio University School of Medicine, Tokyo, Japan
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45
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Páll-Gergely B, Hunyadi A, Jochum A, Asami T. Seven new hypselostomatid species from China, including some of the world's smallest land snails (Gastropoda, Pulmonata, Orthurethra). Zookeys 2015:31-62. [PMID: 26478698 PMCID: PMC4602296 DOI: 10.3897/zookeys.523.6114] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 08/31/2015] [Indexed: 11/21/2022] Open
Abstract
Seven new species of Hypselostomatidae are described from the Chinese province Guangxi: Angustopiladominikae Páll-Gergely & Hunyadi, sp. n., Angustopilafabella Páll-Gergely & Hunyadi, sp. n., Angustopilasubelevata Páll-Gergely & Hunyadi, sp. n., Angustopilaszekeresi Páll-Gergely & Hunyadi, sp. n., Hypselostomasocialis Páll-Gergely & Hunyadi, sp. n., Hypselostomalacrima Páll-Gergely & Hunyadi, sp. n. and Krobylossinensis Páll-Gergely & Hunyadi, sp. n. The latter species is reported from three localities. All other new species are known only from the type locality. Specimens nearly identical to the type specimens of Angustopilahuoyani Jochum, Slapnik & Páll-Gergely, 2014 were found in a cave in northern Guangxi, 500 km from the type locality. Adult individuals of Angustopilasubelevatasp. n. (shell height = 0.83–0.91 mm, mean = 0.87 mm) and Angustopiladominikaesp. n. (shell height of the holotype = 0.86 mm) represent the smallest known members of the Hypselostomatidae, and thus are amongst the smallest land snails ever reported. We note that Pyramidulalaosensis Saurin, 1953 might also belong to Krobylos. Paraboysidianeglecta van Benthem Jutting, 1961, which was previously included in Angustopila, is classified in Hypselostoma.
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Affiliation(s)
| | | | - Adrienne Jochum
- Naturhistorisches Museum der Burgergemeinde Bern, CH-3005 Bern, Switzerland ; Institute of Ecology and Evolution, University of Bern, 3012 Bern, Switzerland
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan
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46
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Kakishima S, Morita S, Yoshida K, Ishida A, Hayashi S, Asami T, Ito H, Miller DG, Uehara T, Mori S, Hasegawa E, Matsuura K, Kasuya E, Yoshimura J. The contribution of seed dispersers to tree species diversity in tropical rainforests. R Soc Open Sci 2015; 2:150330. [PMID: 26587246 PMCID: PMC4632518 DOI: 10.1098/rsos.150330] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 09/17/2015] [Indexed: 06/05/2023]
Abstract
Tropical rainforests are known for their extreme biodiversity, posing a challenging problem in tropical ecology. Many hypotheses have been proposed to explain the diversity of tree species, yet our understanding of this phenomenon remains incomplete. Here, we consider the contribution of animal seed dispersers to the species diversity of trees. We built a multi-layer lattice model of trees whose animal seed dispersers are allowed to move only in restricted areas to disperse the tree seeds. We incorporated the effects of seed dispersers in the traditional theory of allopatric speciation on a geological time scale. We modified the lattice model to explicitly examine the coexistence of new tree species and the resulting high biodiversity. The results indicate that both the coexistence and diversified evolution of tree species can be explained by the introduction of animal seed dispersers.
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Affiliation(s)
- Satoshi Kakishima
- Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
| | - Satoru Morita
- Department of Mathematical and Systems Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
| | - Katsuhiko Yoshida
- Biodiversity Conservation Planning Section, Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies, Tsukuba, Ibaraki 305-8506, Japan
| | - Atsushi Ishida
- Center for Ecological Research, Kyoto University, Otsu, Shiga 520-2113, Japan
| | - Saki Hayashi
- Department of Mathematical and Systems Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto, Nagano 390-8621, Japan
| | - Hiromu Ito
- Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
| | - Donald G. Miller
- Department of Biological Sciences, California State University, Chico, CA 95929, USA
| | - Takashi Uehara
- Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
| | - Shigeta Mori
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata 997-8555, Japan
| | - Eisuke Hasegawa
- Department of Ecology and Systematics, Graduate School of Agriculture, Hokkaido University, Sapporo, Hokkaido 060-8589, Japan
| | - Kenji Matsuura
- Laboratory of Insect Ecology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Eiiti Kasuya
- Department of Biology, Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan
| | - Jin Yoshimura
- Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
- Department of Mathematical and Systems Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
- Marine Biosystems Research Center, Chiba University, Kamogawa, Chiba 299-5502, Japan
- Department of Environmental and Forest Biology, State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, USA
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Abstract
Diverse life histories have been documented in terrestrial pulmonates, which inhabit different regions in climate. Life history traits are often phenotypically plastic and vary depending on the environment. Thus, surveys using designs that control for the confounding effects of environment are needed to evaluate the evolutionary differences between populations of closely related species in the wild. We examined the life histories of sibling species of terrestrial pulmonate within two regions of similar climates. Bradybaena pellucida (BP) is endemic to Japanese islands, and has recently been expanding its distribution northeastward, whereas B. similaris (BS) has been introduced by humans into temperate and tropical regions worldwide. We found that these species exhibit discrete differences in population dynamics and life cycle, despite their close relatedness. The annual life cycle of BP is synchronized among individuals in a population. Thus, BP is univoltine with discontinuous generation. In contrast, BS individuals do not synchronize their growth or reproduction, and thus exhibit overlapping generations. Our results indicate that synchronized and non-synchronized population dynamics diverge relatively rapidly in semelparous pulmonates. This type of difference has not been documented in pulmonate life history, and may have been overlooked because only a few studies have explicitly compared life cycles of closely related species within the same climate. Our results provide a basis for further studies of life history evolution in pulmonates.
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Affiliation(s)
- Nobuhiro Nyumura
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan
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48
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Namkoong H, Fujiwara H, Ishii M, Yagi K, Haraguchi M, Matsusaka M, Suzuki S, Asakura T, Asami T, Saito F, Fukunaga K, Tasaka S, Betsuyaku T, Hasegawa N. Immune reconstitution inflammatory syndrome due to Mycobacterium avium complex successfully followed up using 18 F-fluorodeoxyglucose positron emission tomography-computed tomography in a patient with human immunodeficiency virus infection: A case report. BMC Med Imaging 2015; 15:24. [PMID: 26187282 PMCID: PMC4506418 DOI: 10.1186/s12880-015-0063-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 06/02/2015] [Indexed: 12/18/2022] Open
Abstract
Background In human immunodeficiency virus (HIV)-infected patients, immune reconstitution inflammatory syndrome (IRIS) due to nontuberculous mycobacteria (NTM) infection is one of the most difficult types of IRIS to manage. 18 F-fluorodeoxyglucose positron emission tomography/computed tomography (18 F-FDG PET/CT) has been suggested as a useful tool for evaluating the inflammatory status of HIV-infected patients. We present the first case of Mycobacterium avium complex (MAC)-associated IRIS (MAC-IRIS) that was successfully followed up using 18 F-FDG PET/CT. Case presentation A 44-year-old homosexual Japanese man was referred to our hospital with fever and dyspnea. He was diagnosed with Pneumocystis jiroveci pneumonia and found to be HIV positive. After the initiation of combined antiretroviral therapy (cART), the patient’s mediastinal and bilateral hilar lymphadenopathy gradually enlarged, and bilateral infiltrates appeared in the upper lung fields. 18 F-FDG PET/CT was performed five months after the initiation of cART and showed intense accumulation of fluorodeoxyglucose (FDG) corresponding to the lesions of infiltration as well as the mediastinal and bilateral hilar lymphadenopathy. A bronchial wash culture and pathology findings led to a diagnosis of MAC-IRIS. Anti-mycobacterial chemotherapy with rifampicin, ethambutol, clarithromycin, and levofloxacin was started. One year after the chemotherapy was initiated, there was a significant reduction in FDG uptake in the area of the lesions except in the mediastinal lymph node. This implied incomplete resolution of the MAC-IRIS-related inflammation. Anti-mycobacterial chemotherapy was continued because of the residual lesion. To date, the patient has not experienced a recurrence of MAC-IRIS, a period of nine months. Conclusion We present a case of MAC-IRIS in an HIV-infected patient whose disease activity was successfully followed up using 18 F-FDG PET/CT. Our data suggest that 18 F-FDG PET/CT is useful for evaluating the disease activity of NTM-IRIS and assessing the appropriate duration of anti-mycobacterial chemotherapy for NTM-IRIS in HIV-infected patients.
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Affiliation(s)
- Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan. .,Japan Society for the Promotion of Science, Tokyo, Japan.
| | - Hiroshi Fujiwara
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan.
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Mizuha Haraguchi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Masako Matsusaka
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Shoji Suzuki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Takanori Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Takahiro Asami
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Fumitake Saito
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Koichi Fukunaga
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Sadatomo Tasaka
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Naoki Hasegawa
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan.
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Páll-Gergely B, Hunyadi A, Asami T. A new Chinese species of Eostrobilops Pilsbry, 1927 with a checklist of Eostrobilops and Enteroplax Gude, 1897 species (Gastropoda, Pulmonata, Strobilopsidae). Zookeys 2015:85-95. [PMID: 26167122 PMCID: PMC4492207 DOI: 10.3897/zookeys.508.10004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 05/17/2015] [Accepted: 06/06/2015] [Indexed: 11/23/2022] Open
Abstract
Eostrobilopshumicolus Páll-Gergely & Hunyadi, sp. n. is described from Guangxi Province, China. It is characterized by the combination of a small shell (diameter: 2.3–2.4 mm), strongly ribbed dorsal surface, an infraparietal lamella not reaching the callus, and long basal folds. The new species is found approximately 500 and 800 km from the two nearest species Eostrobilopsinfrequens (northern Vietnam), and Eostrobilopsdiodontina (Hunan, China), respectively. A checklist of extant Eostrobilops Pilsbry, 1927 and Enteroplax Gude, 1899 species is provided. Enteroplaxyaeyamensis Habe & Chinen, 1974, Enteroplaxkanjiokuboi Minato & Tada, 1992 and Enteroplaxtaiwanica Minato & Tada, 1992 are moved to the genus Eostrobilops because of the lack of an elevated parietal callus and a peripheral thread. A map showing all Eostrobilops records is provided.
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Affiliation(s)
| | | | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan
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50
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Páll-Gergely B, Hunyadi A, Ablett J, Lương HV, Fred Naggs, Asami T. Systematics of the family Plectopylidae in Vietnam with additional information on Chinese taxa (Gastropoda, Pulmonata, Stylommatophora). Zookeys 2015:1-118. [PMID: 25632253 PMCID: PMC4304041 DOI: 10.3897/zookeys.473.8659] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 09/27/2014] [Accepted: 12/03/2014] [Indexed: 11/15/2022] Open
Abstract
Vietnamese species from the family Plectopylidae are revised based on the type specimens of all known taxa, more than 600 historical non-type museum lots, and almost 200 newly-collected samples. Altogether more than 7000 specimens were investigated. The revision has revealed that species diversity of the Vietnamese Plectopylidae was previously overestimated. Overall, thirteen species names (anterides Gude, 1909, bavayi Gude, 1901, congesta Gude, 1898, fallax Gude, 1909, gouldingi Gude, 1909, hirsuta Möllendorff, 1901, jovia Mabille, 1887, moellendorffi Gude, 1901, persimilis Gude, 1901, pilsbryana Gude, 1901, soror Gude, 1908, tenuis Gude, 1901, verecunda Gude, 1909) were synonymised with other species. In addition to these, Gudeodiscushemmenisp. n. and Gudeodiscusmessageriraheemissp. n. are described from north-western Vietnam. Sixteen species and two subspecies are recognized from Vietnam. The reproductive anatomy of eight taxa is described. Based on anatomical information, Halongellagen. n. is erected to include Plectopylisschlumbergeri and Plectopylisfruhstorferi. Additionally, the genus Gudeodiscus is subdivided into two subgenera (Gudeodiscus and Veludiscussubgen. n.) on the basis of the morphology of the reproductive anatomy and the radula. The Chinese Gudeodiscusphlyariuswerneri Páll-Gergely, 2013 is moved to synonymy of Gudeodiscusphlyarius. A spermatophore was found in the organ situated next to the gametolytic sac in one specimen. This suggests that this organ in the Plectopylidae is a diverticulum. Statistically significant evidence is presented for the presence of calcareous hook-like granules inside the penis being associated with the absence of embryos in the uterus in four genera. This suggests that these probably play a role in mating periods before disappearing when embryos develop. Sicradiscusmansuyi is reported from China for the first time.
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Affiliation(s)
| | | | - Jonathan Ablett
- Department of Zoology, The Natural History Museum, London SW7 5BD, United Kingdom
| | - Hào Văn Lương
- Center for Rescuing and Conservation of Organisms, Hoang Lien National Park, No. 123, Nguyen Chi Thanh Road, Sa Pa, Lao Cai, Vietnam
| | - Fred Naggs
- Department of Zoology, The Natural History Museum, London SW7 5BD, United Kingdom
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan
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