Создана вакцина против Лайм-боррелиоза
Ученые из Медицинской школы Массачусетского университета (University of Massachusetts Medical School) разработали вакцину от болезни Лайма, которая в перспективе может быть использована для вакцинации людей. Об этом 25 сентября пишет Daily Mail.
Прививка, защищающая собак от болезни Лайма, уже существует, однако новая разработка ученых может стать вакциной, которую можно будет применять и людям. Испытания на лабораторных мышах показали ее 100 %-ную эффективность в предотвращении заболевания.
Обычно при вакцинации в организм вводится очень небольшое количество деактивированных или мертвых бактерий и вирусов. Иммунная система вырабатывает антитела к возбудителю, что снижает риск развития заболевания в будущем. Новая вакцина от болезни Лайма работает немного иначе.
Инъекция, названная Lyme PReP, уже содержит специфические антитела к Borrelia burgdorferi. При попадании возбудителя в кровоток с укусом клеща антитела связываются со всеми бактериальными клетками и нейтрализуют их. Антитела имеют продолжительность жизни 6–9 месяцев, соответственно, вакцинироваться необходимо перед каждым летом, когда риск заражения наиболее высок.
Один из разработчиков вакцины доктор Марк Клемпнер (Mark Klempner) объяснил, что каждая лабораторная мышь была укушена несколькими зараженными клещами после введения вакцины, таким образом, организм животного подвергался гораздо более сильному воздействию, чем то, с которым сталкиваются люди.
Несмотря на это, за шесть месяцев эксперимента ни у одной из мышей не развилось заболевание. Ученые надеются, что уже в течение следующих двух-трех лет эта вакцина может пройти клинические испытания и выйти на рынок.
Источники:
NewsmedicalDailymail
4 октября 2017
Фото: www.istockphoto.com/ayo888
Выпуск: №165, октябрь 20176554 просмотров
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