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أ.د. نايف بن سلطان الحربي

Professor

أستاذ البكتيريا الطبية / عضو هيئة تدريس في قسم النبات و الأحياء الدقيقة

كلية العلوم
كلية العلوم مبنى 5 مكتب 2ب 33
publication
Journal Article
2020

Evaluation of multidrug-resistant Bacillus strains causing public health risks in powdered infant milk formulas

Khaled, Mohamed N. Alanber, Naiyf S. Alharbi and Jamal M. . 2020

Bacillus species; Infant milk powder; Antibiotic resistance

Background: Antibiotic-resistant bacteria are one of the major global health issues that can affect humans, animals, and the environment. Antibiotic-resistant bacteria have emerged as opportunistic pathogenic bacteria that are frequently isolated from both clinical patients and healthy individuals. The aim of this study was to characterize the antibiotic-resistant bacteria isolated from powdered infant formulas marketed in Riyadh, Saudi Arabia.
Methods: Infant powdered milk formulas were purchased from different pharmacies located within Riyadh, and ten products of powdered milk formulas designed for children of various ages were then transferred to the laboratory in the Department of Botany and Microbiology at King Saud University, Riyadh. Isolation and purification of Bacillus species were both performed according to standard protocols. The identification test was performed using the automated Vitek 2 system (BioMerieux, France), and antibiotic sensitivity tests were performed using the disk-diffusion method incorporating standard antibiotic disks foramikacin (30 tig/disk), gentamicin (10 tig/disk), imipenem (10 tig/disk), moxifloxacin (5 tig/disk), cefoperazone (75 tig/disk), cefpodoxime (10 tig/disk), ceftazidime (30 tig/disk), and cefepime (30 tig/disk). Statistical analysis was performed using Ward's method to obtain antibiotic resistance of the isolates.
Results: The results obtained from the milk samples indicated that all isolates were sensitive to amikacin, gentamicin, and moxifloxacin. A group of isolates obtained from milk was resistant to cefoperazone by 6.49%, cefpodoxime by 25.9%, ceftazidime by 14.28%, and cefepime by 19.48%.
Conclusions: Based on these findings, we concluded that the powdered infant formula marketed in Riyadh City may act as a source of bacterial isolates that are resistant to several standard antibiotics. 

Publication Work Type
Article
Volume Number
10
Issue Number
13
Magazine \ Newspaper
JOURNAL OF INFECTION AND PUBLIC HEALTH
Pages
1462-1468
more of publication
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