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Naukowcy opracowali lek, który może pomóc w walce z superbakterią

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Rosnąca oporność drobnoustrojów na antybiotyki to jeden z najpoważniejszych problemów współczesnej medycyny, w tym również leczenia ran. Odkrycie naukowców z Purdue University może stanowić znaczący krok naprzód w walce z lekoopornymi bakteriami, poprawić wyniki leczenia, a nawet uratować życie wielu pacjentów.

Naukowcy z College of Pharmacy i College of Veterinary Medicine w ośrodku naukowym Purdue University odkryli molekułę, która wykazuje skuteczność przeciwko wankomycynoopornemu szczepowi enterokoków (vancomycin-resistant enterococcus, VRE). Wyniki ich badań zostały opublikowane w czasopiśmie naukowym „Journal of Medicinal Chemistry”.

Molekuła została stworzona dzięki zaadaptowaniu do nowego celu leku, który dotychczas był stosowany w terapii jaskry, zastoinowej niewydolności serca oraz innych problemów zdrowotnych. Jak podkreślają autorzy projektu, nowo opracowana molekuła ma szczególne właściwości.

Skuteczność i zdolność dostosowania

Jak tłumaczy Daniel Flaherty, adiunkt chemii medycznej i farmakologii molekularnej z Purdue University, jeden z autorów badań, opracowane przez jego zespół cząsteczki wykazują nie tylko silne działanie przeciwbakteryjne, ale również zdolność adaptacji do działania w różnych częściach ludzkiego organizmu. Jak wyjaśnia ekspert:

– Możemy opracować cząsteczki, które będą wykorzystywane w leczeniu systemowych zakażeń VRE, ale dzięki zmianie właściwości cząsteczek możemy również zaprojektować związek, który będzie działał np. wyłącznie w przewodzie pokarmowym, gdzie występuje największa kolonizacja VRE. Dzięki współpracy naukowców z wielu wydziałów na Purdue University byliśmy w stanie zwiększyć skuteczność leku przeciwko VRE o 600 razy.

Jak wyjaśnia prof. Mohamed Saleem, kolejny współautor projektu, możliwość dostosowania cząsteczki do selektywnego działania w wybranych partiach organizmu jest niezwykle istotna. Naukowiec porównuje nowatorską molekułę z antybiotykami, które zazwyczaj mają szerokie spektrum działania i z tego powodu niszczą również bakterie o pozytywnym działaniu i źle wpływają na organizm. To kolejny problem, w którym odkrycie jego zespołu mogłoby pomóc.

Zakażenia ran przewlekłych i pooperacyjnych

Odkrycie amerykańskich naukowców może mieć duże znaczenie dla leczenia ran trudno gojących się. Enterokoki wankomycynooporne mogą powodować zakażenia odleżyn i ran oparzeniowych, a także ran pooperacyjnych. Infekcja tymi patogenami znacznie wydłuża i utrudnia proces gojenia rany i może stanowić przyczynę poważnych powikłań.

Enterokoki stanowią jedne z najważniejszych szpitalnych patogenów. Łatwo rozprzestrzeniają się w środowisku szpitalnym dzięki dużej odporności na czynniki fizyko-chemiczne i zdolności do długotrwałej kontaminacji powierzchni. Opcje terapeutyczne w przypadku tego drobnoustroju są wciąż bardzo ograniczone, dlatego odkrycie naukowców z Purdue University może mieć przełomowy charakter.

Źródło: https://www.eurekalert.org/

Przeczytaj także: Jak pandemia koronawirusa wpłynęła na opiekę nad pacjentami z cukrzycą?

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