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Mansour AM, Nossair MA, Soliman FS, Tawfik RG, Elekhnawy E, Al-Kuraishy HM, Batiha GES, Mahmoud MH, Alexiou A, Shawky MM. Escherichia coli isolates from meat and abattoirs environment in Egypt: molecular characterization and control by nanosilver particles. Int J Environ Health Res 2024; 34:1751-1762. [PMID: 37535931 DOI: 10.1080/09603123.2023.2243828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 07/29/2023] [Indexed: 08/05/2023]
Abstract
Three hundred samples, including meat from the slaughtered carcass and water, air samples, and swabs from the floor, wall, and employees' hands, were collected from five municipal abattoirs spread across several Egyptian provinces. The Escherichia coli was isolated from floor swabs, meat, air, wall, hand, and water samples. Serotyping of the recovered isolates clarified the presence of various serotypes, including enterohemorrhagic serotypes (O111: H4, O128: H2, and O127: H6) and enterotoxigenic serotypes (O44: H18 and O125: H21). The isolates were resistant to cefotaxime (100%), amoxiclav (80%), then rifampin (66.7%). The stx1 gene, stx2 gene, eaeA gene, blaCMY2 gene and iss gene were detected in 10-80 % of the isolates. Nanosilver (AgNPs) showed that 12.5 ppm was the lowest concentration that prevented bacterial growth. It was observed that 12% of workers wore a clean white coat, only 24% washed their hands between activities during work, only 14% used soap for hand washing, and 42% utilized the same knife for meat and its offal.
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Affiliation(s)
- Alaa M Mansour
- Department of Animal Hygiene and Zoonosis, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Mohamed A Nossair
- Department of Animal Hygiene and Zoonosis, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Faten S Soliman
- Department of Animal Hygiene and Zoonosis, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Rasha Gomaa Tawfik
- Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Engy Elekhnawy
- Pharmaceutical Microbiology Department, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Hayder M Al-Kuraishy
- Department of Clinical Pharmacology and Medicine, College of Medicine, ALmustansiriyia University, M.B.ch.b, FRCP, Bagdad, Iraq
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
| | - Mohamed H Mahmoud
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Athanasios Alexiou
- Department of Science and Engineering, Novel Global Community Educational Foundation, Hebersham, Australia
- AFNP Med, Wien, Austria
| | - Michael M Shawky
- Department of Food Hygiene, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
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Moubarz G, Shousha WG, Saad-Hussein A, Shawky MM, Shawky S. Influence of chitotriosidase gene polymorphisms on oxidative stress and susceptibility to Aspergillus infection among exposed workers. Int J Environ Health Res 2023; 33:1195-1204. [PMID: 35616283 DOI: 10.1080/09603123.2022.2080189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Chitotriosidase (CHIT1) is involved in the innate defense against chitin-containing pathogens. In the present study, we sought to investigate the role of CHIT1 gene polymorphisms on susceptibility to Aspergillus infection in addition to oxidative stress caused by infection. CHIT1 gene polymorphisms were identified in 60 Aspergillus-positive workers by REFLP. We also measured concentrations of the CHIT1 enzyme, total antioxidant capacity (TAC), and malondialdehyde (MDA). The majority of workers were wild-type (AA) (66.5%), followed by heterozygous (AB) (28.5%), and homozygous mutants (BB) (5%). The mean concentrations of specific IgE for all Aspergillus species were affected by change in CHIT1 genotypes. Our findings indicate that decreased CHIT1 activity in homozygous mutant CHIT1 allele is associated with a subsequent decrease in TAC levels, resulting in an increased risk of fungal infection and accumulation of oxidant MDA. Thus, CHIT1 enzyme activity plays a critical role in the susceptibility of WWTP workers to fungal infections.
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Affiliation(s)
- Gehan Moubarz
- Environmental & Occupational Medicine Department, Environment & Climate Change Research Institute, National Research Centre, Cairo, Egypt
| | | | - Amal Saad-Hussein
- Environmental & Occupational Medicine Department, Environment & Climate Change Research Institute, National Research Centre, Cairo, Egypt
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Shawky MM, El-Ghareeb TI, Hameed Abu Hummos LA. Evaluation of the three-dimensional soft tissue changes after anterior segmental maxillary osteotomy. Int J Oral Maxillofac Surg 2012; 41:718-26. [PMID: 22321618 DOI: 10.1016/j.ijom.2011.12.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 12/01/2011] [Indexed: 10/14/2022]
Abstract
The aim of this study was to assess the three-dimensional soft tissue changes following anterior segmental maxillary osteotomy, in terms of magnitude and direction in correlation to hard tissue changes, using cone beam computed tomography (CBCT). The study included 6 patients (age range 17-35 years) suffering from dental maxillary protrusion that required surgical correction by anterior segmental maxillary osteotomy. For each patient, preoperative and postoperative CBCT, photographs, and orthodontic casts were taken before and 6 months after operation to analyse soft tissue changes, in terms of magnitude and direction in correlation to hard tissue changes, using linear and angular measurements. Hard and soft tissue changes were only observed in the maxillary region, upper lip area and nasal tip. Soft tissue mean change included 53% backward displacement of the labrale superius in relation to bone displacement and 18.7% mean increase in the naso-labial angle. The highest correlation coefficient was obtained between the hard and soft tissue changes in the upper lip region. Anterior segmental maxillary osteotomy might be recommended as the treatment modality of choice in patients with maxillary or dento-alveolar protrusion, the technique is simple, safe, and postoperative complications are minimal.
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Affiliation(s)
- M M Shawky
- Department of Oral and Maxillofacial Surgery, Cairo University, Cairo, Egypt
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