1
|
AboElfarh HE, Habib ESE, El-Sokkary MMA. Effect of dexamethasone and tenoxicam on the virulence activities of different Pseudomonas aeruginosa clinical isolates. Germs 2023; 13:321-331. [PMID: 38361541 PMCID: PMC10866164 DOI: 10.18683/germs.2023.1401] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 06/02/2023] [Accepted: 10/31/2023] [Indexed: 02/17/2024]
Abstract
Introduction This study aimed to examine the effect of commonly used non-antibiotic drugs (dexamethasone and tenoxicam), on treatment of Pseudomonas aeruginosa infections, antibiotic resistance and virulence in this pathogen. Methods Four antibiotics (gentamicin, cefepime, ciprofloxacin and meropenem) were investigated. The proteolysis and hemolysis were selected as virulence factors for investigation. In this work, we selected the following final concentrations: dexamethasone (0.0052 μg/mL) and tenoxicam (2.7 μg/mL) to be used in combination with antibiotics or alone for investigation of their effects on antibiotic resistance and virulence in P. aeruginosa isolates. Results The drugs either increased or decreased antibiotic resistance in only 0-3 isolates, which indicates that the investigated drugs did not significantly affect the antibiotic resistance. Interestingly, our study demonstrated that both dexamethasone and tenoxicam increased the hemolytic activity of the investigated isolates. On the other hand, our results indicated that no overall final increasing or decreasing effect could be observed for dexamethasone on the proteolytic activity, while tenoxicam increased the proteolytic activity of the investigated isolates. Interestingly, by real-time PCR dexamethasone has shown significant down-regulation of virulence genes namely algD, plcH and toxA, apparently, in case of combination with ciprofloxacin and with gentamicin in one isolate. However, a negative influence was observed in another isolate. Unfortunately, in the case of tenoxicam the only positive effect was observed in the combination with gentamicin in one isolate. Conclusions Resistance of P. aeruginosa against gentamicin and ciprofloxacin may be affected by combining these antibiotics with dexamethasone or tenoxicam.
Collapse
Affiliation(s)
- Heba E. AboElfarh
- MD student, Microbiology and Immunology Department, Faculty of Pharmacy, Mansoura University, 35516, Egypt
| | - El-Sayed E. Habib
- PhD, Professor of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, 35516, Egypt
| | - Mohamed M. A. El-Sokkary
- PhD, Professor of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, 35516, Egypt
| |
Collapse
|
2
|
Ramadan HA, El-Baz AM, Goda RM, El-Sokkary MMA, El-Morsi RM. Molecular characterization of enterotoxin genes in methicillin-resistant S. aureus isolated from food poisoning outbreaks in Egypt. J Health Popul Nutr 2023; 42:86. [PMID: 37641155 PMCID: PMC10463939 DOI: 10.1186/s41043-023-00416-z] [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: 10/23/2022] [Accepted: 07/09/2023] [Indexed: 08/31/2023]
Abstract
BACKGROUND Staphylococcus aureus (S. aureus), especially methicillin-resistant S. aureus (MRSA), is a known disease-causing bacteria with many associated health hazards. Staphylococcal food poisoning can result from staphylococcal enterotoxins (SEs). METHODS In this study, 50 S. aureus isolates were isolated from the gastrointestinal tract (GIT) clinical samples of patients with food poisoning in clinical laboratories at Mansoura University Hospital, Egypt. For determination their antibiogram, these isolates were tested for antimicrobial sensitivity against 12 antimicrobial agents using the agar disk diffusion test. After DNA extraction from the isolates, conventional polymerase chain reaction (PCR) was used to detect mecA and SEs genes. RESULTS As a result, all isolates were ampicillin and cefoxitin-resistant, while 86% (43 of 50) of the tested isolates exhibited multidrug resistance (MDR). In contrast, the highest sensitivity was confirmed against vancomycin, linezolid and quinolones, namely ciprofloxacin and norfloxacin. Although 100% of the isolates were mecA positive, staphylococcal enterotoxin genes set-A, set-B, set-C, set-G, set-M, and set-O genes were detected in 56%, 20%, 8%, 32%, 16%, and 24%, of the tested isolates, respectively. Finally, isolates encompassing SEs genes were used to validate a microarray chip, indicating its potential for a better methodological approach for detecting and identifying SEs in human samples. CONCLUSION The genotypic findings of this study may help explain the enterotoxigenic patterns in S. aureus among Egyptian patients with food poisoning.
Collapse
Affiliation(s)
- Heba A Ramadan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, 11152, Egypt
| | - Ahmed M El-Baz
- Department of Microbiology and Immunology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, 11152, Egypt
| | - Reham M Goda
- Department of Microbiology and Immunology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, 11152, Egypt
| | - Mohamed M A El-Sokkary
- Microbiology and Immunology Department, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.
| | - Rasha M El-Morsi
- Department of Microbiology and Immunology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, 11152, Egypt
| |
Collapse
|
3
|
Eladawy M, El-Mowafy M, El-Sokkary MMA, Barwa R. Antimicrobial resistance and virulence characteristics in ERIC-PCR typed biofilm forming isolates of P. aeruginosa. Microb Pathog 2021; 158:105042. [PMID: 34119625 DOI: 10.1016/j.micpath.2021.105042] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/22/2021] [Accepted: 06/04/2021] [Indexed: 10/21/2022]
Abstract
Pseudomonas aeruginosa is a serious pathogen particularly in immunocompromised patients. In this work, 103 clinical isolates of P. aeruginosa were collected and classified into weak, moderate, and strong biofilm producers according to their biofilm forming abilities via tissue culture plate method. The antimicrobial resistance and the presence of different virulence genes were investigated via disc diffusion method and polymerase chain reaction respectively. Moreover, ERIC-PCR typing was performed to investigate the genetic diversity among the clinical isolates. No significant correlation was observed between biofilm formation and resistance to each antimicrobial agent. Similar observation was detected concerning the multidrug resistance and biofilm formation. Regarding virulence genes, algD gene was harbored by all isolates (100%). Only pelA and phzM were significantly prevalent in strong biofilm producers. Additionally, the mean virulence score was higher in strong biofilm producers (9.33) than moderate (8.62) and weak (7) biofilm producers. Moreover, there was a significant correlation between the overall virulence score of the isolates and its ability to form biofilm. ERIC-PCR genotyping revealed the presence of 99 different ERIC patterns based on 70% similarity, and the different ERIC patterns were categorized into 8 clusters. 100% similarity indicates the possibility of cross-colonization in P. aeruginosa infections.
Collapse
Affiliation(s)
- Mohamed Eladawy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, Egypt
| | - Mohammed El-Mowafy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, Egypt
| | - Mohamed M A El-Sokkary
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, Egypt.
| | - Rasha Barwa
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, Egypt
| |
Collapse
|
4
|
Yahya G, Ebada A, Khalaf EM, Mansour B, Nouh NA, Mosbah RA, Saber S, Moustafa M, Negm S, El-Sokkary MMA, El-Baz AM. Soil-Associated Bacillus Species: A Reservoir of Bioactive Compounds with Potential Therapeutic Activity against Human Pathogens. Microorganisms 2021; 9:1131. [PMID: 34073963 PMCID: PMC8225174 DOI: 10.3390/microorganisms9061131] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/20/2021] [Accepted: 05/21/2021] [Indexed: 12/17/2022] Open
Abstract
Soil hosts myriads of living organisms with the extensive potential to produce bioactive compounds. Bacteria are the major soil inhabitants that represent a rich reservoir for antibiotic production along with their role in recycling nutrients and maintenance of the soil ecosystem. Here, from 55 tested soil samples, we isolated and identified a novel antibiotic-producing bacterial strain with a phylogenetically closest match to Bacillus subtilis sp. based on BLASTN search of GenBank for the 16S rRNA gene sequence. We characterized this novel strain through microscopic, biochemical, and molecular techniques, combined with testing its potential antimicrobial activity. Chemical studies revealed that the antibiotic produced by this strain is a glycopeptide. It exhibited profound activity against both methicillin-resistant Staphylococcus aureus (MRSA) and Candida albicans. The antibiotic is optimally produced at 37 °C after 28 h of growth. The biocompatibility of the extracted antibiotic was tested over a wide range of factors including temperature, pH, surfactants, and metal salts. To confirm its therapeutic potential, a sterile solution of the antibiotic was tested in vivo against bacteria-induced keratitis in rats where significant healing activity was recorded. Hence, this soil Bacillus strain may lead to the development of novel antibiotics for the treatment of human pathogens.
Collapse
Affiliation(s)
- Galal Yahya
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Al Sharqia 44519, Egypt
| | - Asmaa Ebada
- Department of Microbiology and Biotechnology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt; (A.E.); (A.M.E.-B.)
| | - Eman M. Khalaf
- Department of Microbiology and Immunology, Faculty of Pharmacy, Damanhour University, Damanhour 22511, Egypt;
| | - Basem Mansour
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt;
| | - Nehal A. Nouh
- Department of Microbiology, Albatterjee Medical College, Jeddah 6231, Saudi Arabia;
| | - Rasha A. Mosbah
- Infection Control Unit, Zagazig University Hospitals, Zagazig University, Zagazig 44519, Egypt;
| | - Sameh Saber
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt;
| | - Mahmoud Moustafa
- Department of Biology, College of Science, King Khalid University, Abha 9004, Saudi Arabia;
- Department of Botany and Microbiology, Faculty of Science, South Valley University, Qena 83523, Egypt
| | - Sally Negm
- Life Sciences Department, College of Science and Literature Mahyel Aseer, King Khalid University, Abha 61413, Saudi Arabia;
- Unit of Food Bacteriology, Central Laboratory of Food Hygiene, Ministry of Health, Sharkia 44516, Egypt
| | | | - Ahmed M. El-Baz
- Department of Microbiology and Biotechnology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt; (A.E.); (A.M.E.-B.)
| |
Collapse
|
5
|
El-Baz AM, Shata A, Hassan HM, El-Sokkary MMA, Khodir AE. The therapeutic role of lactobacillus and montelukast in combination with metformin in diabetes mellitus complications through modulation of gut microbiota and suppression of oxidative stress. Int Immunopharmacol 2021; 96:107757. [PMID: 33991997 DOI: 10.1016/j.intimp.2021.107757] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/22/2021] [Accepted: 05/01/2021] [Indexed: 12/25/2022]
Abstract
Male reproductive dysfunction is one of the overlooked findings of diabetes mellitus (DM) that deserves greater scientific attention. This study is designed to explore the therapeutic potential of metformin and montelukast, in combination with Lactobacillus, for modulation of intestinal flora and suppression of oxidative stress in testicular and liver damage in diabetic male rats. A DM model was induced by streptozotocin (STZ)which caused functional, biochemical, and inflammatory injuries to the testicular and liver tissues. The experimental panel included nine rat groups: normal control, normal control plus metformin, normal control plus montelukast, DM control, DM plus montelukast, DM plus a combination of metformin and Lactobacillus, DM plus a combination of montelukast and Lactobacillus, and DM plus a combination of metformin and montelukast. In parallel, clinical evaluation of microscopic examination scoring, and hepatic and testicular injuries, were evaluated. Biochemical markers including glucose level, lipid profile, inflammatory markers (tumor necrosis factor- (TNF-α) and interleukin-17 (IL-17), Caspase-3, and Bax proteins expressions were measured. The change in the microbiota abundance was investigated using conventional and real-time PCR. The current study revealed a significant difference in the relative abundance of microbiota, where DM is associated with an enormous increase of Bacteroides spp., Clostridium spp., E. coli, and Fusobacterium spp., and a significant decrease in Bifidobacteria spp., and Lactobacillus spp., in contrast with normal control. Metformin and montelukast, in combination with Lactobacillus, significantly reversed the testicular and liver damage caused by STZ. Moreover, the drugs significantly reduced the oxidative, inflammatory, and apoptotic activities induced by STZ.
Collapse
Affiliation(s)
- Ahmed M El-Baz
- Microbiology and Biotechnology department, Faculty of pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt.
| | - Ahmed Shata
- Clinical pharmacology department, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt; Clinical Pharmacy department, Faculty of pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt
| | - Hanan M Hassan
- Pharmacology and biochemistry department, Faculty of pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt
| | - Mohamed M A El-Sokkary
- Microbiology department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Ahmed E Khodir
- Pharmacology department, Faculty of pharmacy, Horus University-Egypt, New Damietta 34518, Egypt
| |
Collapse
|