Benha University

سماح محمود الدسوقي حسن

أستاذ مساعد

كلية الطب البشري الأنف والأذن والحنجرة

Virulence Determinants and Antimicrobial Profiles of Pasteurella multocida Isolated from Cattle and Humans in Egypt

• 2021
العودة
معلومات البحث
المؤلفون Mohamed Sabry Abd Elraheam Elsayed 1,*, Samah Mahmoud Eldsouky 2,
الكلمات المفتاحية Not Available
المجلة العلمية Not Available
الناشر Not Available
المجلد Not Available
العدد Not Available
الصفحات Not Available
publication.type Local
رابط البحث Not Available
المواد المرفقة Not Available
الملخص
Pasteurella multocida is a Gram-negative bacterium that causes drastic infections in cattle
and humans. In this study, 55 isolates were recovered from 115 nasal swabs from apparently healthy
and diseased cattle and humans in Minufiya and Qalyubia, Egypt. These isolates were confirmed
by kmt1 existence, and molecular classification of the capsular types showed that types B, D, and E
represented 23/55 (41.8%), 21/55 (38.1%), and 11/55 (20.0%), respectively. The isolates were screened
for five virulence genes with hgbA, hgbB, and ptfA detected in 28/55 (50.9%), 30/55 (54.5%), and 25/55
(45.5%), respectively. We detected 17 capsular and virulence gene combinations with a discriminatory
power (DI) of 0.9286; the most prevalent profiles were dcbF type D and dcbF type D, hgbA, hgbB,
and ptfA, which represented 8/55 (14.5%) each. These strains exhibited high ranges of multiple
antimicrobial resistance indices; the lowest resistances were against chloramphenicol, ciprofloxacin,
amoxicillin/clavulanic acid, and levofloxacin. The macrolide–lincosamide–streptogramin B methylase
gene erm(Q), with erm(42) encoding MLSB monomethyltransferase, mph(E) encoding a macrolide
efflux pump, and msr(E) encoding macrolide-inactivating phosphotransferase were present. The
class 1 and 2 integrons and extended-spectrum -lactamase genes intl1, intl2, blaCTX-M, blaCTX-M-1,
and blaTEM were detected. It is obvious to state that co-occurrence of resistance genes resulted in
multiple drug-resistant phenotypes. The identified isolates were virulent, genetically diverse, and
resistant to antimicrobials, highlighting the potential risk to livestock and humans.
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