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E. coli produttore di ESBL e resistenza antimicrobica nei bovini

E. coli produttore di ESBL e resistenza antimicrobica nei bovini

Bidhan Sarkar / Kalyani Ray

67,11 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2026
Materia
Empresa y gestión
ISBN:
9786209582004
67,11 €
IVA incluido
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L’E. coli è comunemente presente nel tratto intestinale dell’uomo e di altre specie animali e costituisce un serbatoio di geni resistenti per batteri potenzialmente patogeni. L’E. coli è uno dei principali agenti patogeni responsabili delle infezioni uterine nelle vacche. Le beta-lattamasi a spettro esteso (ESBL) sono un nuovo gruppo di enzimi, individuato a metà degli anni ’80 tra Serratiamarcescens e Klebsiellapneumoniae in Germania, prodotti da batteri appartenenti alla famiglia delle Enterobacteriaceae e che conferiscono resistenza a uno spettro esteso di cefalosporine oltre alle penicilline e ai monobattami. Dallo studio è emerso che, in media, le vacche di razza incrociata sono più suscettibili alle malattie riproduttive rispetto alle vacche locali e che l’E. coli è uno dei fattori eziologici delle infezioni uterine nelle vacche. Su un totale di 63 isolati di E. coli, 45 (71,42%), 43 (68,25%), 44 (69,84%), 40 (63,43%) e 35 (55,55%) erano resistenti rispettivamente alla cefpodoxima, all’aztreonum, alla ceftazidima, alla cefepima e alla ceftriaxone. Inoltre, è stata osservata resistenza anche alla tetraciclina, all’ampicillina, alla gentamicina, alla norfloxacina, al clotrimoxazolo e al cloramfenicolo rispettivamente al 100%, 100%, 84,12%, 95,23%, 77,77% e 25,39%.

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