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Anti-phage аntibody response in phage therapy against healthcare-associated infections (HAIs)

Гуморальный иммунный ответ на бактериофаги на фоне фаготерапии инфекций, связанных с оказанием медицинской помощи (ИСМП)
Authors: M.V. Zeigarnik; L.I. Novikova; E R Zul'karneev; O.N. Ershova; A.V. Aleshkin; Alexander Karaulov; Irina A. Kiseleva; +2 Authors

Anti-phage аntibody response in phage therapy against healthcare-associated infections (HAIs)

Abstract

Тип: статья в журнале - научная статья Язык: английский Том: 15Номер: 1 Год: 2017 Страницы: 35-40Поступила в редакцию: 05.02.2016 DOI: 10.20953/1729-9225-2017-1-35-40 ЖУРНАЛ: ИНФЕКЦИОННЫЕ БОЛЕЗНИ Издательство: ООО "Издательство "Династия" (Москва) ISSN: 1729-9225eISSN: 2414-9691 КЛЮЧЕВЫЕ СЛОВА: БАКТЕРИОФАГИ, BACTERIOPHAGES, ИСМП, АНТИБИОТИКОРЕЗИСТЕНТНОСТЬ, ANTIBIOTIC RESISTANCE, ГУМОРАЛЬНЫЙ ИММУННЫЙ ОТВЕТ, HUMORAL IMMUNE RESPONSE, АНТИФАГОВЫЕ АНТИТЕЛА, HAIS, ANTI-PHAGE ANTIBODIES АННОТАЦИЯ: Цель. Оценить антифаговый гуморальный иммунный ответ на фаготерапию ИСМП. Пациенты и методы. 42 пациента, находящиеся на продленной ИВЛ в отделении нейрореанимации, получали коктейль бактериофагов per os, в том числе 6 пациентов - повторно от 3 до 5 раз. Антифаговый иммунитет оценивали с помощью ИФА до и после окончания курса. Результаты. Исходно из 87,5% проб пациентов были выделены A. baumannii, K. pneumoniae, P. aeruginosa. После первых курсов фаготерапии эффективная санация была подтверждена в 54-62,5% случаях. Фармакокинетические исследования указывали на системный механизм действия энтеральных форм бактериофагов. Повторные курсы фаготерапии теми же штаммами фагов не привели к существенной эрадикации патогенов. Антифаговый иммунитет после однократного применения коктейля бактериофагов конкретного штаммового состава детектировали с помощью ИФА по наличию титра специфических IgG-антител в диапазоне от 1/16 до 1/4096 (у пациентов, не принимавших коктейль бактериофагов, антитела отсутствовали). Заключение. Снижение санирующего эффекта бактериофага может возникать при проведении повторного курса у одного и того же пациента из-за образования антифаговых антител. Для сохранения результативности фаготерапии необходимо изменение штаммового состава коктейля бактериофагов. The objective. To evaluate anti-phage аntibody response in phage therapy against HAIs. Patients and methods. Forty-two patients on prolonged mechanical ventilation in a neurological ICU were administered bacteriophage cocktail per os, including six patients repeatedly - from 3 to 5 courses. Anti-phage immunity was evaluated by ELISA before and after the treatment. Results. Initially, from 87.5% of the patients' samples A. baumannii, K. pneumoniae, P. aeruginosa were isolated. In the first courses of phage therapy, effective sanitation was proved in 54-62.5% of cases. Pharmacokinetic research assumed a systemic action of enteral forms of bacteriophages. Repeated courses of phage therapy with the same strains did not lead to a substantial eradication of pathogens. Anti-phage immunity after a single application of bacteriophage cocktail with a certain composition of strains was detected with ELISA by the presence of titer of specific IgG antibodies in the range of 1/16-1/4096 (no antibodies were present in patients who did not take the cocktail). Conclusion. The effectiveness of a bacteriophage may be reduced if a patient is given a repeated treatment due to the formation of anti-phage antibodies. In order to retain performance of phage therapy, a change in the composition of strains in the phage cocktail is necessary. https://www.sechenov.ru/science_and_innovation/repo/?PAGEN_1=1#135141

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