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Pathoanatomical Pattern of Brain Damage of White Mice Infected with Experimental Anthrax ; Патологоанатомическая картина поражения головного мозга у белых мышей при экспериментальной сибиреязвенной инфекции

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  • Additional Information
    • Publication Information:
      Scientific Centre for Family Health and Human Reproduction Problems
    • Publication Date:
      2020
    • Collection:
      Acta Biomedica Scientifica
    • Abstract:
      Background. Bacillus anthracis is a microorganism that causes anthrax. Because of irrational therapy, this particularly dangerous infectious disease leads to a systemic spread of bacteria in the body through histohematological barriers. Bacilli entering the brain subsequently lead to hemorrhagic meningitis. Despite intensive antibiotic therapy, that kind of meningitis is difficult to cure and therefore highly lethal. Studying characteristics of anthrax’s isolates of different origin and genotype is an actual area of research.The aim of the study is searching for pathomorphological and histological changes in the brain regions of experimental animals with anthrax infection, caused by B. anthracis with different plasmid spectrum.Materials and methods: The study was conducted on 200 certified white mice, three B. anthracis strains were used as research objects: B. anthracis I-323 (рХО1– /рХО2– ), B. anthracis I-275 (рХО1- /рХО2- ), and B. anthracis I-217 (рХО1+ / рХО2– ). The material for histological examination was the brain of mice, embedded in paraffin, and then sections were prepared using a microtome and stained with hematoxylin-eosin and Nissl toluidine blue. The degree of neuronal damage was assessed by calculating the semi-quantitative factor and determining the average size of the neuron nuclei, and the numerical density of cells in 1mm2 was studied. Microphotography and quantitative analysis was performed using the Motic Images Plus 2.0 application package. Statistical processing of the results was performed using the program “Statistica 6.0”.The results of the study showed that the brain of infected mice shows signs of hemorrhagic leptomeningitis, the manifestations of which are more pronounced in mice infected with weakly virulent plasmid strains of B. anthracis and fallen mice.Conclusion. Multicomponent exotoxin and specialized proteins, encoded in the pathogenicity plasmid of microorganisms, allow B. anthracis to easily overcome histohematological barriers and cause severe septic anthrax. The results ...
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      application/pdf
    • Relation:
      https://www.actabiomedica.ru/jour/article/view/2241/1979; Покровский В.И., Брико Н.И., Данилкин Б.К., Пак С.Г. Инфекционные болезни и эпидемиология. М.: ГЭОТАР-Медиа; 2007.; Витязева С.А., Старовойтова Т.П., Дубровина В.И., Балахонов С.В., Загоскина Т.Ю. Патогенез и патологоанатомическая картина чумы, холеры и сибирской язвы: учебное пособие. Иркутск: ИНЦХТ; 2015.; Mukherjee DV, Tonry JH, Kim KS, Ramarao N, Popova TG, Bailey C, et al. Bacillus anthracis protease InhA increases blood-brain barrier permeability and contributes to cerebral hemorrhages. PLoS ONE. 2011; 6(3): e17921. doi:10.1371/journal.pone.0017921; Ebrahimi CM, Kern JW, Sheen TR, Ebrahimi-Fardooee MA, van Sorge NM, Schneewind O, et al. Penetration of the blood-brain barrier by Bacillus anthracis requires the pXO1-encoded BslA protein. J Bacteriol. 2009; 191(23): 7165-7173. doi 10.1128/JB.00903-09; Abbott NJ, Patabendige AA, Dolman DE, Yusof SR, Begley DJ. Structure and function of the blood-brain barrier. Neurobiol Dis. 2010; 37(1): 13-25. doi 10.1016/j.nbd.2009.07.030; Al-Obaidi MMJ, Desa MNM. Mechanisms of blood brain barrier disruption by different types of bacteria, and bacterial-host interactions facilitate the bacterial pathogen invading the brain. Cell Mol Neurobiol. 2018; 38(7): 1349-1368. doi 10.1007/s10571-018-0609-2; Inglesby TV, O’Toole T, Henderson DA, Bartlett JG, Ascher MS, Eitzen E, et al. Anthrax as a biological weapon, 2002: updated recommendations for management.JAMA. 2002; 287(17): 2236-2252. doi 10.1001/jama.287.17.2236; Попова А.Ю., Куличенко А.Н. Опыт ликвидации вспышки сибирской язвы на Ямале в 2016 году. Ижевск: ООО «Принт-2»; 2017.; Супотницкий М.В. Героиновая сибирская язва в Шотландии и Германии. Биопрепараты. 2011; (1): 40-44.; Блинов Д.В. Современные представления о роли нарушения резистентности гематоэнцефалического барьера в патогенезе заболеваний ЦНС. Часть 1: строение и формирование гематоэнцефалического барьера. Эпилепсия и пароксизмальные состояния. 2013; 5(3): 65-75.; Коржевский Д.Э., Гиляров А.В. Основы гистологической техники. СПб.: СпецЛит; 2010. ISBN 978-5-299-00438-0; https://www.actabiomedica.ru/jour/article/view/2241
    • Accession Number:
      10.29413/ABS.2020-5.1.9
    • Online Access:
      https://www.actabiomedica.ru/jour/article/view/2241
      https://doi.org/10.29413/ABS.2020-5.1.9
    • Rights:
      Authors who publish with this journal agree to the following terms:Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access). ; Авторы, публикующие в данном журнале, соглашаются со следующим:Авторы сохраняют за собой авторские права на работу и предоставляют журналу право первой публикации работы на условиях лицензии Creative Commons Attribution License, которая позволяет другим распространять данную работу с обязательным сохранением ссылок на авторов оригинальной работы и оригинальную публикацию в этом журнале.Авторы сохраняют право заключать отдельные контрактные договорённости, касающиеся не-эксклюзивного распространения версии работы в опубликованном здесь виде (например, размещение ее в институтском хранилище, публикацию в книге), со ссылкой на ее оригинальную публикацию в этом журнале.Авторы имеют право размещать их работу в сети Интернет (например в институтском хранилище или персональном сайте) до и во время процесса рассмотрения ее данным журналом, так как это может привести к продуктивному обсуждению и большему количеству ссылок на данную работу (См. The Effect of Open Access).
    • Accession Number:
      edsbas.CE5E6B4B