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Kouichi Morita

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https://www.readbyqxmd.com/read/28628629/understanding-msos-a-qualitative-study-examining-the-implementation-of-a-text-messaging-outbreak-alert-system-in-rural-kenya
#1
Mitsuru Toda, Ian Njeru, Dejan Zurovac, David Kareko, Shikanga O-Tipo, Matilu Mwau, Kouichi Morita
Outbreaks of epidemic diseases pose serious public health risks. To overcome the hurdles of sub-optimal disease surveillance reporting from the health facilities to relevant authorities, the Ministry of Health in Kenya piloted mSOS (mobile SMS-based disease outbreak alert system) in 2013-2014. In this paper, we report the results of the qualitative study, which examined factors that influence the performances of mSOS implementation. In-depth interviews were conducted with 11 disease surveillance coordinators and 32 in-charges of rural health facilities that took part in the mSOS intervention...
2017: PloS One
https://www.readbyqxmd.com/read/28446808/possible-combinatorial-effects-of-current-smoking-and-alcohol-intake-on-chronic-kidney-disease-in-a-japanese-nationwide-cross-sectional-survey
#2
Kouichi Tamura, Toru Dejima, Yukiko Morita, Satoshi Hirade, Hiromichi Wakui
No abstract text is available yet for this article.
April 27, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28392469/susceptibility-and-initial-immune-response-of-tupaia-belangeri-cells-to-dengue-virus-infection
#3
Mohammad Enamul Hoque Kayesh, Bouchra Kitab, Takahiro Sanada, Daisuke Hayasaka, Kouichi Morita, Michinori Kohara, Kyoko Tsukiyama-Kohara
Dengue is an emerging disease of great public health significance worldwide. The lack of a suitable infection model has hampered dengue virus (DENV) pathogenesis study, and developing a suitable small animal model has been a long-standing challenge. The aim of this study was to develop a feasible experimental model of DENV infection using Tupaia belangeri. The susceptibility of tupaia to DENV infection and characteristics of its innate immune response were examined in vitro. We found that tupaia fibroblast cells support replication of DENV serotypes 1-4 with a linear increase in viral load 24-96h post-infection in both cells and culture supernatants...
April 6, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28250260/burden-of-rotavirus-and-enteric-bacterial-pathogens-among-children-under-five-years-old-hospitalized-with-diarrhea-in-suburban-and-rural-areas-in-kenya
#4
Mohammad Shah, Erick Odoyo, Ernest Wandera, Cyrus Kathiiko, Martin Bundi, Gabriel Miringu, Sora Guyo, Satoshi Komoto, James Nyangao, Mohamed Karama, Takao Tsuji, Koki Taniguchi, Kouichi Morita, Yoshio Ichinose
This study aimed to investigate the incidence of rotavirus and enteric bacterial infections among children up to five years old with diarrhea living in suburban and rural areas in Kenya. It was a cross-sectional descriptive study, and a total of 1060 diarrheal fecal specimens were obtained from 722 children at the Kiambu County Hospital (KCH) located in a suburban area and 338 children from the Mbita District Hospital (MDH) located in a rural part of western Kenya, between August 2011 and December 2013. Of the 1060 isolates, group A rotavirus (RVA) was detected in 29...
February 28, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28108177/discriminating-between-adaptive-and-carcinogenic-liver-hypertrophy-in-rat-studies-using-logistic-ridge-regression-analysis-of-toxicogenomic-data-the-mode-of-action-and-predictive-models
#5
Shujie Liu, Taisuke Kawamoto, Osamu Morita, Kouichi Yoshinari, Hiroshi Honda
Chemical exposure often results in liver hypertrophy in animal tests, characterized by increased liver weight, hepatocellular hypertrophy, and/or cell proliferation. While most of these changes are considered adaptive responses, there is concern that they may be associated with carcinogenesis. In this study, we have employed a toxicogenomic approach using a logistic ridge regression model to identify genes responsible for liver hypertrophy and hypertrophic hepatocarcinogenesis and to develop a predictive model for assessing hypertrophy-inducing compounds...
March 1, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/27825473/corrigendum-to-phagocytic-cells-contribute-to-the-antibody-mediated-elimination-of-pulmonary-infected-sars-coronavirus-virology-2014-157-168
#6
Fumihiko Yasui, Michinori Kohara, Masahiro Kitabatake, Tetsu Nishiwaki, Hideki Fujii, Chise Tateno, Misako Yoneda, Kouichi Morita, Kouji Matsushima, Shigeo Koyasu, Chieko Kai
No abstract text is available yet for this article.
December 2016: Virology
https://www.readbyqxmd.com/read/27795473/dengue-associated-acute-encephalitis-syndrome-cases-in-son-la-province-vietnam-in-2014
#7
Mya Myat Ngwe Tun, Rohitha V Muthugala, Nguyen Thi Thu Thuy, Pham Hoai Linh Ly, Le Thi Hien Thu, Dang Thi Dinh, Nguyen Viet Hoang, Le Thi Quynh Mai, Meng Ling Moi, Corazon C Buerano, Kouichi Morita, Futoshi Hasebe
Acute encephalitis syndrome (AES) is associated with high morbidity and mortality, and affects both children and adults. The main etiologic agent is Japanese encephalitis virus (JEV), however there are also reports on Dengue virus (DENV) encephalitis cases. The objectives of this paper were to determine the proportion of encephalitic patients due to JEV during the 2014 outbreak in Son La Province in Vietnam and to find the association of DENV in non-JEV viral encephalitis cases. Out of 90 patients, 6 (6.7%) were positive for anti-JEV IgM, 5 (5...
October 31, 2016: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27777508/pathogenic-potential-and-growth-kinetics-of-muko-virus-in-mice-and-human-derived-cells
#8
Gianne Eduard L Ulanday, Satoshi Shimada, Ngwe Tun Mya Myat, Takeshi Nabeshima, Kouichi Morita, Daisuke Hayasaka
BACKGROUND: Ticks have been long known as vectors of various pathogens, some of which can cause high fatality rates among infected individuals. Our enhanced tick surveillance around Nagasaki, Japan, led to the isolation and identification of a new strain of a recently identified Orbivirus, Muko virus (MUV). The orbiviruses have a wide host range, including humans, and is related to a spectrum of clinical outcomes. However, the zoonotic potential of some members of the genus, although reported, were not clearly elucidated...
2016: Tropical Medicine and Health
https://www.readbyqxmd.com/read/27554675/hypoglycemia-during-the-temporary-interruption-of-parenteral-nutrition-infusion-in-pediatric-hematopoietic-stem-cell-transplantation
#9
Ryu Yanagisawa, Kouichi Takeuchi, Kazutoshi Komori, Ikuko Fujihara, Yoshihiko Hidaka, Daisuke Morita, Akiko Futatsugi, Takako Ono, Eiko Hidaka, Kazuo Sakashita, Masaaki Shiohara
BACKGROUND: Parenteral nutrition (PN) is required with pediatric procedures such as hematopoietic stem cell transplantation (HSCT). However, risks associated with temporary PN infusion interruption remain unclear. MATERIALS AND METHODS: We retrospectively analyzed in 22 children undergoing HSCT receiving PN with the same daily routine: temporary PN infusion interruption before breakfast for administering a saline-diluted acyclovir drip. After correcting patients' glucose levels, we examined minimum blood glucose levels between preparative regimen initiation and post-HSCT day 30...
August 23, 2016: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/27551237/development-and-utility-of-an-in-vitro-fluorescence-based-assay-for-the-discovery-of-novel-compounds-against-dengue-2-viral-protease
#10
Gianne Eduard L Ulanday, Kenta Okamoto, Kouichi Morita
BACKGROUND: Dengue disease is one of the most significant vector-borne illnesses in the world. The emergence and re-emergence of dengue infections in many parts of the world affect millions annually and continue to burden public health systems especially in low-income populations. Advances in dengue vaccine development showed promising results; however, protection seems to be suboptimal. There is no licensed chemotherapeutic agent against dengue to date. An ideal scenario of combinatorial vaccination of high-risk individuals and chemotherapy of the diseased during outbreaks may compensate for the meager protection offered by the vaccine...
2016: Tropical Medicine and Health
https://www.readbyqxmd.com/read/27493841/persistence-of-neutralizing-antibody-against-dengue-virus-2-after-70-years-from-infection-in-nagasaki
#11
Mya Myat Ngwe Tun, Yoshihito Muta, Shingo Inoue, Kouichi Morita
This study aimed to investigate the duration of humoral immune responses to dengue virus (DENV) infection in Japanese who experienced acute febrile illness with hemorrhagic manifestations 70 years ago, when an epidemic of dengue occurred in Nagasaki, Japan, from 1942 to 1944. A Japanese volunteer requested serological diagnosis of DENV infection in 2014 and donated blood sample to measure the antibody titer against DENV by antiflavi IgG indirect ELISA, focus reduction neutralization test, and plaque reduction neutralization test...
2016: BioResearch Open Access
https://www.readbyqxmd.com/read/27433127/molecular-and-serological-epidemiology-of-japanese-encephalitis-virus-jev-in-a-remote-island-of-western-japan-an-implication-of-jev-migration-over-the-east-china-sea
#12
Akira Yoshikawa, Takeshi Nabeshima, Shingo Inoue, Masanobu Agoh, Kouichi Morita
BACKGROUND: Japanese encephalitis (JE) is a mosquito-borne infectious disease caused by Japanese encephalitis virus (JEV). About 1-10 cases with severe central nervous system symptoms have been constantly reported every year in Japan. To clarify the mechanism of maintenance of JEV, the present study surveyed pigs for serological evidence of JEV infection and isolated JEV strains from pigs and mosquitoes in Isahaya City (Isahaya) and Goto City (Goto) in the islets of Goto in Nagasaki Prefecture from 2008 to 2014...
2016: Tropical Medicine and Health
https://www.readbyqxmd.com/read/27433125/seroepidemiological-evidence-of-severe-fever-with-thrombocytopenia-syndrome-virus-infections-in-wild-boars-in-nagasaki-japan
#13
Daisuke Hayasaka, Yu Fuxun, Akira Yoshikawa, Guillermo Posadas-Herrera, Satoshi Shimada, Mya Myat Ngwe Tun, Masanobu Agoh, Kouichi Morita
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging disease in East Asia. It is thought that the SFTS virus (SFTSV) circulates between ticks and animals in nature and that the virus is transmitted to humans by tick bites. SFTS is endemic to Nagasaki in western Japan; however, epidemiological information regarding SFTSV in Nagasaki is not known. In this study, we performed SFTSV IgG ELISAs and neutralization antibody assays for a seroepidemiological survey using samples from wild boars captured in six areas of Nagasaki...
2016: Tropical Medicine and Health
https://www.readbyqxmd.com/read/27307452/development-and-characterization-of-monoclonal-antibodies-to-yellow-fever-virus-and-application-in-antigen-detection-and-igm-capture-enzyme-linked-immunosorbent-assay
#14
Ferdinard Adungo, Fuxun Yu, David Kamau, Shingo Inoue, Daisuke Hayasaka, Guillermo Posadas-Herrera, Rosemary Sang, Matilu Mwau, Kouichi Morita
Yellow fever (YF) is an acute hemorrhagic viral infection transmitted by mosquitoes in Africa and South America. The major challenge in YF disease detection and confirmation of outbreaks in Africa is the limited availability of reference laboratories and the persistent lack of access to diagnostic tests. We used wild-type YF virus sequences to generate recombinant envelope protein in an Escherichia coli expression system. Both the recombinant protein and sucrose gradient-purified YF vaccine virus 17D (YF-17D) were used to immunize BALB/c mice to generate monoclonal antibodies (MAbs)...
August 2016: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/27154331/characterization-of-the-2013-dengue-epidemic-in-myanmar-with-dengue-virus-1-as-the-dominant-serotype
#15
Mya Myat Ngwe Tun, Aung Kyaw Kyaw, Nader Makki, Rohitha Muthugala, Takeshi Nabeshima, Shingo Inoue, Daisuke Hayasaka, Meng Ling Moi, Corazon C Buerano, Saw Myat Thwe, Kyaw Zin Thant, Kouichi Morita
In 2013 in Myanmar, dengue epidemic occurred with 20,255 cases including 84 deaths. This study aimed to determine the serological and molecular characteristics of dengue virus (DENV) infection among children with clinical diagnosis of dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS) during this period. Single acute serum samples were collected from 300 children in Mandalay Children Hospital, Mandalay, Myanmar. Out of the 300 children, 175 (58.3%) and 183 (61%) were positive for anti-dengue IgM and anti-dengue IgG, respectively...
September 2016: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/27142979/the-world-first-two-cases-of-severe-fever-with-thrombocytopenia-syndrome-an-epidemiological-study-in-nagasaki-japan
#16
Shintaro Kurihara, Akira Satoh, Fuxun Yu, Daisuke Hayasaka, Masayuki Shimojima, Masato Tashiro, Tomomi Saijo, Takahiro Takazono, Yoshifumi Imamura, Taiga Miyazaki, Misuzu Tsukamoto, Katsunori Yanagihara, Hiroshi Mukae, Masayuki Saijo, Kouichi Morita, Shigeru Kohno, Koichi Izumikawa
Severe fever with thrombocytopenia syndrome (SFTS) caused by the SFTS virus (SFTSV), a novel phlebovirus belonging to the family Bunyaviridae, was reported in China for the first time in 2009. We observed two cases where the SFTSV was isolated for the first time in Nagasaki, Japan, in 2005. Two males in their 60s, a farmer and a hunter, respectively, living in Nagasaki developed SFTS during the same period. The patients developed similar clinical symptoms and signs, such as fever, loss of consciousness, and multiple organ dysfunction...
July 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/27083563/age-of-onset-differentially-influences-the-progression-of-regional-dysfunction-in-sporadic-amyotrophic-lateral-sclerosis
#17
MULTICENTER STUDY
Daichi Yokoi, Naoki Atsuta, Hazuki Watanabe, Ryoichi Nakamura, Akihiro Hirakawa, Mizuki Ito, Hirohisa Watanabe, Masahisa Katsuno, Yuishin Izumi, Mitsuya Morita, Akira Taniguchi, Masaya Oda, Koji Abe, Kouichi Mizoguchi, Osamu Kano, Satoshi Kuwabara, Ryuji Kaji, Gen Sobue
The clinical courses of sporadic amyotrophic lateral sclerosis (ALS) show extensive variability. Our objective was to elucidate how age of onset influences the progression of regional symptoms and functional losses in sporadic ALS. We included 648 patients with sporadic ALS from a multicenter prospective ALS cohort. We investigated the distribution of initial symptoms and analyzed the time from onset to events affecting activities of daily living (ADL) as well as the longitudinal changes in each regional functional rating score among four groups with different ages of onset...
June 2016: Journal of Neurology
https://www.readbyqxmd.com/read/26981628/effectiveness-of-a-mobile-short-message-service-based-disease-outbreak-alert-system-in-kenya
#18
RANDOMIZED CONTROLLED TRIAL
Mitsuru Toda, Ian Njeru, Dejan Zurovac, Shikanga O-Tipo, David Kareko, Matilu Mwau, Kouichi Morita
We conducted a randomized, controlled trial to test the effectiveness of a text-messaging system used for notification of disease outbreaks in Kenya. Health facilities that used the system had more timely notifications than those that did not (19.2% vs. 2.6%), indicating that technology can enhance disease surveillance in resource-limited settings.
April 2016: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/26895439/a-proteomic-approach-identifies-candidate-early-biomarkers-to-predict-severe-dengue-in-children
#19
Dang My Nhi, Nguyen Tien Huy, Kaname Ohyama, Daisuke Kimura, Nguyen Thi Phuong Lan, Leo Uchida, Nguyen Van Thuong, Cao Thi My Nhon, Le Hong Phuc, Nguyen Thi Mai, Shusaku Mizukami, Lam Quoc Bao, Nguyen Ngoc Doan, Nguyen Van Thanh Binh, Luong Chan Quang, Juntra Karbwang, Katsuyuki Yui, Kouichi Morita, Vu Thi Que Huong, Kenji Hirayama
BACKGROUND: Severe dengue with severe plasma leakage (SD-SPL) is the most frequent of dengue severe form. Plasma biomarkers for early predictive diagnosis of SD-SPL are required in the primary clinics for the prevention of dengue death. METHODOLOGY: Among 63 confirmed dengue pediatric patients recruited, hospital based longitudinal study detected six SD-SPL and ten dengue with warning sign (DWS). To identify the specific proteins increased or decreased in the SD-SPL plasma obtained 6-48 hours before the shock compared with the DWS, the isobaric tags for relative and absolute quantification (iTRAQ) technology was performed using four patients each group...
February 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/26875984/suppressive-effects-of-the-site-1-protease-s1p-inhibitor-pf-429242-on-dengue-virus-propagation
#20
Leo Uchida, Shuzo Urata, Gianne Eduard L Ulanday, Yuki Takamatsu, Jiro Yasuda, Kouichi Morita, Daisuke Hayasaka
Dengue virus (DENV) infection causes one of the most widespread mosquito-borne diseases in the world. Despite the great need, effective vaccines and practical antiviral therapies are still under development. Intracellular lipid levels are regulated by sterol regulatory elements-binding proteins (SREBPs), which are activated by serine protease, site 1 protease (S1P). Small compound PF-429242 is known as a S1P inhibitor and the antivirus effects have been reported in some viruses. In this study, we examined the anti-DENV effects of PF-429242 using all four serotypes of DENV by several primate-derived cell lines...
February 10, 2016: Viruses
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