The emergence of resistance to last-resort antibiotics is a public health concern of global scale. Besides direct person-to-person propagation, environmental pathways might contribute to the dissemination of antibiotic-resistant bacteria and antibiotic resistance genes (ARGs). Here, we describe the incidence of blaNDM-1, a gene conferring resistance to carbapenems, in the wastewater of the city of Jeddah, Saudi Arabia, over a 1-year period. blaNDM-1 was detected at concentrations ranging from 10(4) to 10(5) copies/m(3) of untreated wastewater during the entire monitoring period. These results indicate the ubiquity and high incidence of blaNDM-1 in the local wastewater. To track the bacteria carrying blaNDM-1, we isolated Escherichia coli PI7, a strain of sequence type 101 (ST101), from wastewater around the Hajj event in October 2013. Genome sequencing of this strain revealed an extensive repertoire of ARGs as well as virulence and invasive traits. These traits were further confirmed by antibiotic resistance profiling and in vitro cell internalization in HeLa cell cultures. Given that this strain remains viable even after a certain duration in the sewerage, and that Jeddah lacks a robust sanitary infrastructure to fully capture all generated sewage, the presence of this bacterium in the untreated wastewater represents a potential hazard to the local public health. To the best of our knowledge, this is the first report of a blaNDM-1-positive E. coli strain isolated from a nonnosocomial environment in Saudi Arabia and may set a priority concern for the need to establish improved surveillance for carbapenem-resistant E. coli in the country and nearby regions.
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http://dx.doi.org/10.1128/AAC.00236-16 | DOI Listing |
Curr Top Med Chem
January 2025
Department of Chemistry, University of Swabi, Anbar 23561, Khyber Pakhtunkhwa, Pakistan.
Background: In continuation of our chemical and biological work on Tithonia tubaeformis, we evaluated the antipyretic activity of its extract which on fractionation gives a pure alkaloid galegine. Galegine a bioprivileged compound, is a hemiterpene bearing a guanidine group, which holds significant importance in medicinal chemistry. Biological activities such as antimicrobial, antidiabetic, anti-inflammatory, cardiovascular, anticancer, and antihypertensive, are often associated with guanidine-containing molecules.
View Article and Find Full Text PDFCurr Pharm Des
January 2025
Department of Pharmaceutics, College of Pharmacy, Shaqra University, Shaqra 11961, Kingdom of Saudi Arabia.
Nanogels (NGs) are presently the focus of extensive research because of their special qualities, including minimal particle size, excellent encapsulating efficacy, and minimizing the breakdown of active compounds. As a result, NGs are great candidates for drug delivery systems. Cross-linked nanoparticles (NPs) called stimulus-responsive NGs are comprised of synthetic, natural, or a combination of natural and synthetic polymers.
View Article and Find Full Text PDFCurr Med Chem
January 2025
Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
Background: Infertility was often considered a female issue, but male infertility emerged significantly after the Covid-19 pandemic. Hence, assessments are crucial for planning policies on health care and family planning and reasons thereof post vaccinations.
Material And Methods: The present study was a case-control, dual-centers, prospective study with normal sperm parameters.
Objectives: To evaluate the efficacy, safety, and stability of EyeCryl Phakic intraocular lens (IOL) implantation.
Methodology: This retrospective study was conducted in Maghrabi Hospital in Medina to review 31 patients who underwent posterior chamber phakic IOL (EyeCryl Phakic IOL) for surgical correction of myopia or astigmatism. The data were collected from patient medical records after obtaining their consents.
F1000Res
January 2025
Department of Preventive Dental Science, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Eastern Province, 12372, Saudi Arabia.
Introduction And Aim: Periodontal disease, initiated by dental biofilm and influenced by various local and systemic factors, includes stress as a potential contributor to its progression. Despite associations with severe forms like acute necrotizing ulcerative gingivitis, a comprehensive large-sample study linking stress to periodontal disease is lacking. This study aims to investigate the relationship between mental health and periodontal disease.
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