Новый препарат способен аннулировать резистентность бактерий к антибиотикам
Ученые из Квинслендского университета (The University of Queensland, Австралия) протестировали антибактериальные свойства экспериментального препарата для борьбы с болезнью Альцгеймера, известного как PBT2. Они выяснили, что это вещество можно использовать для ликвидации резистентности к антибиотикам у бактерий. Статья об этом опубликована 11 декабря в научном журнале mBio.
PBT2 разрабатывался как препарат для снижения в мозге уровня тяжелых металлов путем нарушения методов взаимодействия между металлами и клетками организма. Препарат показал эффективность в экспериментах с лабораторными мышами, однако не был одобрен для применения на людях в силу неоднозначных результатов исследований.
Поскольку нарушение содержания металлов может приводить к токсичности у микробов, ученые протестировали препарат на бактериях, устойчивых к действию большинства антибиотиков. Результаты исследования показали, что экспериментальное лекарство способно подавлять у бактерий мутации, которые вызывают устойчивость к действию антибиотиков. Таким образом, PBT2 можно применять для терапии инфекционных заболеваний в комбинации с противомикробными препаратами, которые ранее считались неэффективными против определенного вида бактерий.
Ученые отмечают, что PBT2 успешно прошел две фазы клинических испытаний на людях, где показал свою безопасность для применения человеком. Однако, для одобрения терапии комбинацией PBT2 и антибиотиков потребуются дополнительные исследования.
Напомним, что, по данным ВОЗ, в 2016–2017 годах более 500 000 пациентов с бактериальными инфекциями по всему миру столкнулись с резистентностью возбудителей к назначенным препаратам. Весной этого года также были представлены данные о количестве резистентных бактерий в российских больницах.
13 декабря 2018
Выпуск: №179, декабрь 20182078 просмотров
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