2021 Fiscal Year Research-status Report
全ゲノム配列を用いたトキソプラズマ分子疫学情報の解明と病原性関連遺伝子の同定
Project/Area Number |
19K07520
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Research Institution | Chiba University |
Principal Investigator |
野呂瀬 一美 千葉大学, 大学院医学研究院, 特任准教授 (30156244)
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Co-Investigator(Kenkyū-buntansha) |
彦坂 健児 千葉大学, 大学院医学研究院, 准教授 (30456933)
新庄 記子 大阪大学, 免疫学フロンティア研究センター, 特任研究員(常勤) (60794039)
関根 章博 千葉大学, 大学院医学研究院, 特任教授 (30425631)
猪狩 英俊 千葉大学, 医学部附属病院, 准教授 (50312947)
照屋 勝治 国立研究開発法人国立国際医療研究センター, その他部局等, 病棟医長 (50505386)
吉田 朝秀 琉球大学, 病院, 准教授 (20363682)
前田 卓哉 埼玉医科大学, 医学部, 教授 (20383763)
中村 ふくみ 東京都立墨東病院(臨床研究支援室臨床研究部), 感染症科, 部長 (90295204)
坂本 寛和 千葉大学, 大学院医学研究院, 特任助教 (40724349)
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Project Period (FY) |
2019-04-01 – 2023-03-31
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Keywords | トキソプラズマ症 / ゲノム解析 / インターフェロンガンマノックアウトマウス / 日和見感染症 / 分子疫学 / 薬剤耐性 |
Outline of Annual Research Achievements |
日和見感染症のトキソプラズマ症は細胞内寄生原虫であるトキソプラズマの感染により引き起こされ、全世界の約三分の一がこの原虫に感染している。先天性感染と後天性感染があり、適切な治療をしないと生命にかかわる症状となる。トキソプラズマ症の診断はトキソプラズマ症が日和見感染症であるが故に困難であることが多く、トキソプラズマ抗体が陽性の場合、臨床医は難しい判断を迫られることになる。トキソプラズマ症は人獣共通寄生虫症であり、世界的に新株や強毒株、薬剤耐性株の存在が判明している。しかし、島国である本邦におけるヒトに感染するトキソプラズマに関する分子疫学情報(遺伝子型・全ゲノム配列・病原性・薬剤耐性の原因変異等)は未解明のまま残されている。 この研究の目的は、本邦におけるトキソプラズマ症の分子疫学情報を整備し、さらに病歴情報と照合することで病原性に関与する株間の遺伝子変異を特定することにある。 今年度は過去2年間に引き続き、1.トキソプラズマ患者から分離した株をインターフェロンガンマノックアウトマウス由来胎児繊維芽細胞やベロ細胞に接種し、株の樹立をはかった。2、全国からトキソプラズマ症の診断目的で送付されてきた臨床検体(羊水、髄液、末梢血、脳組織、臍帯、等)から、DNAを抽出しPCR法でトキソプラズマ遺伝子が陽性と判断された検体をインターフェロンガンマノックアウトマウスの腹腔内や経口的に感染させ、株の樹立をはかった。3.過去にPCR法でトキソプラズマ陽性と判断された臨床検体を順次、各種のプライマーを使用して遺伝子型の分析をたた。さらにそれらの遺伝子型と病歴・臨床経過を比較・照合し、病原性に関与する遺伝子情報の研究基盤を構築しつつある。 4.トキソプラズマの標準株を2株、米国から輸入し、増殖させ、DNAを抽出した。
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Current Status of Research Progress |
Current Status of Research Progress
3: Progress in research has been slightly delayed.
Reason
昨年度以来、次世代シーケンサーの故障が続いており、かつ、新型コロナ感染症の影響で人の往来が制限されたため、故障を直すことができなかった。そのため、遺伝子のシーケンス解析が進まなかった。 米国からのトキソプラズマの標準株の2株の輸入に際して、輸入会社の手違いにより、輸入できず、輸入会社を変更したので、株の入手に時間がかかった。また2株のうち2株は増殖できず、DNAもわずかしか採取できなかった。そのため、再度輸入の手続きを取っている。
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Strategy for Future Research Activity |
引き続き、全国からのトキソプラズマ症疑いの臨床検体を受け入れ、PCR診断をし、陽性に出た検体のDNAよりより詳細な株の分子分析を行っていく。 新型コロナ感染症が落ち着きつつあるので次世代シークエンサーの故障を直すべく努力する。
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Causes of Carryover |
新型コロナ感染症の影響で、学会参加の交通費が必要なくなった。また、米国からの新規トキソプラズマ株の購入にあたり、株の代金が必要なく運賃のみの請求だったため、購入費が必要なくなった。
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Research Products
(87 results)
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[Journal Article] Erdheim-Chester Disease Involving the Central Nervous System with Latent Toxoplasmosis.2022
Author(s)
Wadayama T, Shimizu M, Kimura I, Baba K, Beck G, Nagano S, Morita R, Nakagawa H, Shirano M, Goto T, Norose K, Hikosaka K, Murayama S, Mochizuki H.
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Journal Title
Intern Med.
Volume: -
Pages: -
DOI
Peer Reviewed / Open Access
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[Journal Article] Effectiveness of Favipiravir on Nonsevere, Early-Stage COVID-19 in Japan: A Large Observational Study Using the COVID-19 Registry Japan.2022
Author(s)
Tsuzuki S, Hayakawa K, Doi Y, Shinozaki T, Uemura Y, Matsunaga N, Terada M, Suzuki S, Asai Y, Yamada G, Saito S, Shibata T, Kondo M, Izumi K, Hojo M, Mizoue T, Yokota K, Nakamura-Uchiyama F, Saito F, Sugiura W, Ohmagari N.
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Journal Title
Infect Dis Ther.
Volume: -
Pages: 1-13
DOI
Peer Reviewed / Open Access
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[Journal Article] Effectiveness of remdesivir in hospitalized nonsevere patients with COVID-19 in Japan: A large observational study using the COVID-19 Registry Japan.2022
Author(s)
Tsuzuki S, Hayakawa K, Uemura Y, Shinozaki T, Matsunaga N, Terada M, Suzuki S, Asai Y, Kitajima K, Saito S, Yamada G, Shibata T, Kondo M, Izumi K, Hojo M, Mizoue T, Yokota K,?Nakamura-Uchiyama F, Saito F, Sugiura W, Ohmagari N.
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Journal Title
Int J Infect Dis.
Volume: 118
Pages: 119-125
DOI
Peer Reviewed / Open Access
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[Journal Article] Clinical characteristics of the first three waves of hospitalised patients with COVID-19 in Japan prior to the widespread use of vaccination: a nationwide observational study.2022
Author(s)
Matsunaga N, Hayakawa K, Asai Y, Tsuzuki S, Terada M, Suzuki S, Ohtsu H, Kitajima K, Toyoda A, Suzuki K, Suzuki M, Saito S, Uemura Y, Shibata T, Kondo M, Nakamura-Uchiyama F, Yokota K, Saito F, Izumi K, Sugiura W, Ohmagari N.
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Journal Title
Lancet Reg Health West Pac.
Volume: 22
Pages: 100421
DOI
Peer Reviewed / Open Access
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[Journal Article] SARS-CoV-2 Omicron-neutralizing memory B-cells are elicited by two doses of BNT162b2 mRNA vaccine.2022
Author(s)
Kotaki R, Adachi Y, Moriyama S, Onodera T, Fukushi S, Nagakura T, Tonouchi K, Terahara K, Sun L, Takano T, Nishiyama A, Shinkai M, Oba K, Nakamura-Uchiyama F, Shimizu H, Suzuki T, Matsumura T, Isogawa M, Takahashi Y.
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Journal Title
Sci Immunol.
Volume: -
Pages: eabn8590
DOI
Peer Reviewed / Open Access
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[Journal Article] Nosocomial outbreak of coronavirus disease in two general wards during the initial wave of the pandemic in 2020, Tokyo, Japan.2022
Author(s)
Sakamoto N, Ota M, Takeda T, Kosaka A, Washino T, Iwabuchi S, Beppu M, Nishiduka I, Matsui T, Suzuki M, Nakamura-Uchiyama F.
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Journal Title
WPSAR
Volume: 13
Pages: 1-5
DOI
Peer Reviewed / Open Access
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[Journal Article] Fatty liver on computed tomography scan on admission is a risk factor for severe coronavirus disease.2022
Author(s)
Okuhama A, Hotta M, Ishikane M, Kawashima A, Miyazato Y, Terada M, Yamada G, Kanda K, Inada M, Sato L, Sato M, Akiyama Y, Suzuki T, Nakamoto T, Nomoto H, Ide S, Nakamura K, Saito S, Kinoshita N, Yamamoto K, Morioka S, Ujiie M, Hayakawa K, Kustuna S, Shida Y, Tajima T, Teruya K, Funato Y, Yamamoto M, Izumi S, et al.
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Journal Title
J Infect Chemother.
Volume: 28
Pages: 217-223
DOI
Peer Reviewed / Open Access
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[Journal Article] Progressive Cytopenia Developing during Treatment of Cryptococcosis in a Patient with HIV Infection and Bone Marrow Cryptococcal Infection.2022
Author(s)
Katsura M, Okuhama A, Koizumi Y, Ando N, Yanagawa Y, Mizushima D, Aoki T, Tsukada K, Teruya K, Kikuchi Y, Oka S, Watanabe K.
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Journal Title
Intern Med.
Volume: 61
Pages: 257-261
DOI
Peer Reviewed / Open Access
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[Journal Article] Clinical characteristics and incidence of toxoplasmosis after autologous hematopoietic stem cell transplantation: A retrospective study and literature review.2021
Author(s)
Kitahara M, Hiroshima Y, Norose K, Hikosaka K, Kazumoto H, Uematsu N, Shishido T, Kaiume H, Sato K, Ueki T, Sumi M, Watanabe M, Kobayashi H.
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Journal Title
Transpl Infect Dis.
Volume: 23
Pages: e13726
DOI
Peer Reviewed / Open Access
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[Journal Article] Development of a rapid scabies immunodiagnostic assay based on transcriptomic analysis of Sarcoptes scabiei var. nyctereutis.2021
Author(s)
Akuta T, Minegishi D, Kido N, Imaizumi K, Nakaoka S, Tachibana SI, Hikosaka K, Hori F, Masataka, Nakagawa, Sakuma C, Oouchi Y, Nakajima Y, Tanaka S, Omiya T, Morikaku K, Kawahara M, Tada Y, Tarui H, Ueda T, Kikuchi-Ueda T, Ono Y.
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Journal Title
Sci Rep.
Volume: 11
Pages: 6455
DOI
Peer Reviewed / Open Access
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[Journal Article] Myopia Prevalence and Ocular Biometry Features in a General Japanese Population: The Nagahama Study.2021
Author(s)
Nakao SY, Miyake M, Hosoda Y, Nakano E, Mori Y, Takahashi A, Ooto S, Tamura H, Tabara Y, Yamashiro K, Matsuda F, Tsujikawa A; of the Nagahama Study Group.
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Journal Title
Ophthalmology.
Volume: 128
Pages: 522-531
DOI
Peer Reviewed / Open Access
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[Journal Article] Antibody responses to BNT162b2 mRNA COVID-19 vaccine and their predictors among healthcare workers in a tertiary referral hospital in Japan.2021
Author(s)
Kageyama T, Ikeda K, Tanaka S, Taniguchi T, Igari H, Onouchi Y, Kaneda A, Matsushita K, Hanaoka H, Nakada TA, Ohtori S, Yoshino I, Matsubara H, Nakayama T, Yokote K, Nakajima H.
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Journal Title
Clin Microbiol Infect.
Volume: 27
Pages: 1861.e1-1861.e5
DOI
Peer Reviewed / Open Access
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[Journal Article] Possibility of deterioration of respiratory status when steroids precede antiviral drugs in patients with COVID-19 pneumonia: A retrospective study.2021
Author(s)
Shionoya Y, Taniguchi T, Kasai H, Sakuma N, Imai S, Shikano K, Takayanagi S, Yahaba M, Nakada TA, Igari H, Sakao S, Suzuki T.
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Journal Title
PLoS One.
Volume: 16
Pages: e0256977
DOI
Peer Reviewed / Open Access
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[Journal Article] Three-day regimen of oseltamivir for post-exposure prophylaxis of influenza in hospital wards: a study protocol for a prospective, multi-center, single-arm trial.2021
Author(s)
Ishiguro N, Ito YM, Iwasaki S, Nagao M, Kawamura H, Kanai S, Nukui Y, Tokuda K, Miyara T, Igari H, Yamada K, Chikumi H, Sano C, Koike R, Yagi T, Murakami N; Japan Infection Prevention, Control Conference for National, Public University Hospitals.
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Journal Title
BMC Infect Dis.
Volume: 21
Pages: 887
DOI
Peer Reviewed / Open Access
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[Journal Article] A structured summary of a study protocol for a multi-center, randomized controlled trial (RCT) of COVID-19 prevention with Kampo medicines (Integrative Management in Japan for Epidemic Disease by prophylactic study: IMJEDI P1 study).2021
Author(s)
Namiki T, Takayama S, Arita R, Ishii T, Kainuma M, Makino T, Mimura M, Yoshino T, Nogami T, Arai M, Sato J, Tanaka K, Nakae H, Igari H, Ozawa Y, Shiko Y, Kawasaki Y, Nezu M, Ito T.
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Journal Title
Trials.
Volume: 22
Pages: 23
DOI
Peer Reviewed / Open Access
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[Journal Article] Anal human papillomavirus infection and its relationship with abnormal anal cytology among MSM with or without HIV infection in Japan.2021
Author(s)
Shiojiri D, Mizushima D, Takano M, Watanabe K, Ando N, Uemura H, Yanagawa Y, Aoki T, Tanuma J, Tsukada K, Teruya K, Kikuchi Y, Gatanaga H, Oka S.
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Journal Title
Sci Rep.
Volume: 11
Pages: 19257
DOI
Peer Reviewed / Open Access
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[Journal Article] Clinical and radiological findings of silent hypoxia among COVID-19 patients.2021
Author(s)
Okuhama A, Ishikane M, Hotta M, Sato L, Akiyama Y, Morioka S, Suzuki S, Tajima T, Yamamoto M, Teruya K, Izumi S, Ohmagari N.
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Journal Title
J Infect Chemother.
Volume: 27
Pages: 1536-1538
DOI
Peer Reviewed / Open Access
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[Journal Article] Does the SARS-CoV-2 rapid antigen test result correlate with the viral culture result?2021
Author(s)
Yamamoto K, Nagashima M, Yoshida I, Sadamasu K, Kurokawa M, Nagashima M, Kinoshita N, Maeda K, Takasaki J, Teruya K, Ohmagari N.
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Journal Title
J Infect Chemother.
Volume: 27
Pages: 1273-1275
DOI
Peer Reviewed / Open Access
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[Journal Article] IL-1RA in the supernatant of QuantiFERON-TB Gold In-Tube and QuantiFERON-TB Gold Plus is useful for discriminating active tuberculosis from latent infection.2021
Author(s)
Akashi S, Suzukawa M, Takeda K, Asari I, Kawashima M, Ohshima N, Inoue E, Sato R, Shimada M, Suzuki J, Yamane A, Tamura A, Ohta K, Tohma S, Teruya K, Nagai H.
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Journal Title
J Infect Chemother.
Volume: 27
Pages: 617-624
DOI
Peer Reviewed / Open Access
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[Journal Article] A case of cryptococcal necrotizing fasciitis and immune reconstitution inflammatory syndrome in a renal transplantation recipient.2021
Author(s)
Kuwahara M, Yurugi S, Ando J, Takeuchi M, Miyata R, Harada M, Masuda Y, Kanagawa S, Yoneda T, Fukumori T, Ogawa T,?Nakamura-Uchiyama F, Kasahara K.
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Journal Title
Int J Surg Case Rep.
Volume: 85
Pages: 106199
DOI
Peer Reviewed / Open Access
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[Journal Article] Cross-reactive humoral immune responses against seasonal human coronaviruses in COVID-19 patients with different disease severity.2021
Author(s)
Imai K, Matsuoka M, Tabata S, Kitagawa Y, Nagura-Ikeda M, Kubota K, Fukada A, Takada T, Sato M, Noguchi S, Takeuchi S, Arakawa N, Miyoshi K, Saito Y, Maeda T.
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Journal Title
Int J Infect Dis
Volume: 111
Pages: 68-75
DOI
Peer Reviewed / Open Access
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[Journal Article] Evaluation of a chemiluminescent enzyme immunoassay-based high-throughput SARS-CoV-2 antigen assay for the diagnosis of COVID-19: The VITROS? SARS-CoV-2 Antigen Test.2021
Author(s)
Matsuzaki N, Orihara Y, Kodana M, Kitagawa Y, Matsuoka M, Kawamura R, Takeuchi S, Imai K, Tarumoto N, Maesaki S, Maeda T.
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Journal Title
J Med Virol
Volume: 93
Pages: 6778-6781
DOI
Peer Reviewed / Open Access
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[Journal Article] Concerns about the clinical usefulness of saliva specimens 1 for the diagnosis of COVID-19.2021
Author(s)
Kodana M, Kitagawa Y, Takahashi R, Matsuoka M, Fushimi N, Sakai J, Ishibashi N, Imai K, Takeuchi S, Tarumoto N, Maesaki S, Ikezono T, Maeda T.
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Journal Title
J Infect
Volume: 83
Pages: 119-145
DOI
Peer Reviewed / Open Access
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[Journal Article] Clinical characteristics and antibody response to SARS-CoV-2 spike 1 protein using VITROS Anti-SARS-CoV-2 antibody tests in COVID-19 patients in Japan.2021
Author(s)
Nagura-Ikeda M, Imai K, Kubota K, Noguchi S, Kitagawa Y, Matsuoka M, Tabata S, Miyoshi K, Ito T, Tamura K, Maeda T.
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Journal Title
J Med Microbiol
Volume: 70
Pages: 1291
DOI
Peer Reviewed / Open Access
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[Journal Article] Clinical evaluation of the antibody response in patients with COVID-19 using automated high-throughput immunoassays.2021
Author(s)
Kubota K, Kitagawa Y, Matsuoka M, Imai K, Orihara Y, Kawamura R, Sakai J, Ishibashi N, Tarumoto N, Takeuchi S, Maesaki S, Maeda. T
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Journal Title
Diag Microbiol Infect Dis
Volume: 100
Pages: 115370
DOI
Peer Reviewed / Open Access
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[Journal Article] Antibody response patterns in COVID-19 patients with different levels of disease severity-Japan.2021
Author(s)
Imai K, Kitagawa Y, Tabata S, Kubota K, Nagura-Ikeda M, Matsuoka M, Miyoshi K, Sakai J, Ishibashi N, Tarumoto N, Takeuchi S, Ito T, Maesaki S, Tamura K, Maeda T.
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Journal Title
J Med Virol
Volume: 93
Pages: 3211-3218
DOI
Peer Reviewed / Open Access
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