1
|
Ghany SSHAE, Ibrahem RA, El-Gendy AO, El-Baky RMA, Mustafa A, Azmy AF. Novel synergistic interactions between monolaurin, a mono-acyl glycerol and β lactam antibiotics against Staphylococcus aureus: an in vitro study. BMC Infect Dis 2024; 24:379. [PMID: 38584271 PMCID: PMC11000382 DOI: 10.1186/s12879-024-09261-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 03/26/2024] [Indexed: 04/09/2024] Open
Abstract
BACKGROUND A major worldwide health issue is the rising frequency of resistance of bacteria.Drug combinations are a winning strategy in fighting resistant bacteria and might help in protecting the existing drugs.Monolaurin is natural compound extracted from coconut oil and has a promising antimicrobial activity against Staphylococcus.aureus. This study aims to examine the efficacy of monolaurin both individually and in combination with β-lactam antibiotics against Staphylococcus aureus isolates. METHODS Agar dilution method was used for determination of minimum inhibitory concentration (MIC) of monolaurin against S.aureus isolates. Scanning electron microscope (SEM) was used to detect morphological changes in S.aureus after treatment with monolaurin. Conventional and Real-time Polymerase chain reaction (RT-PCR) were performed to detect of beta-lactamase (blaZ) gene and its expressional levels after monolaurin treatment. Combination therapy of monolaurin and antibiotics was assessed through fractional inhibitory concentration and time-kill method. RESULTS The antibacterial activity of monolaurin was assessed on 115 S.aureus isolates, the MIC of monolaurin were 250 to 2000 µg/ml. SEM showed cell elongation and swelling in the outer membrane of S.aureus in the prescence of 1xMIC of monolaurin. blaZ gene was found in 73.9% of S.aureus isolates. RT-PCR shows a significant decrease in of blaZ gene expression at 250 and 500 µg/ml of monolaurin. Synergistic effects were detected through FIC method and time killing curve. Combination therapy established a significant reduction on the MIC value. The collective findings from the antibiotic combinations with monolaurin indicated synergism rates ranging from 83.3% to 100%.In time-kill studies, combination of monolaurin and β-lactam antibiotics produced a synergistic effect. CONCLUSION This study showed that monolaurin may be a natural antibacterial agent against S. aureus, and may be an outstanding modulator of β-lactam drugs. The concurrent application of monolaurin and β-lactam antibiotics, exhibiting synergistic effects against S. aureus in vitro, holds promise as potential candidates for the development of combination therapies that target particularly, patients with bacterial infections that are nearly incurable.
Collapse
Affiliation(s)
- Shimaa Salah Hassan Abd El Ghany
- Department of Microbiology and Immunology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514, Egypt
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, 11566, Egypt
| | - Reham A Ibrahem
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt.
| | - Ahmed Osama El-Gendy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514, Egypt
| | - Rehab Mahmoud Abd El-Baky
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, 11566, Egypt
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt
| | - Ahmad Mustafa
- Faculty of Engineering, October University for Modern Science and Arts (MSA), Giza, Egypt
| | - Ahmed Farag Azmy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514, Egypt
| |
Collapse
|
2
|
Farhan SM, El-Baky RMA, Ahmed HR, Fathalla Z, Alamri A, Abdelkader H, Fatease AA. Comparative Investigation into the Roles of Imipenem:Cyclodextrin Complexation and Antibiotic Combination in Combatting Antimicrobial Resistance in Gram-Negative Bacteria. Pharmaceuticals (Basel) 2023; 16:1508. [PMID: 37895978 PMCID: PMC10609816 DOI: 10.3390/ph16101508] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 10/29/2023] Open
Abstract
Extensively drug-resistant (XDR), multidrug-resistant (MDR) and pandrug-resistant (PDR) Gram-negative microorganisms (GNBs) are considered a significant global threat. β-lactam and aminoglycoside combinations and imipenem:cyclodextrin inclusion complexes were studied for the treatment of lethal GNBs. This is because of the broad empiric coverage of the two drugs and their possession of different spectra of activity. Two cyclodextrins (β- and hydroxy propyl β-cyclodextrins) were utilized for inclusion complex formation with imipenem using the physical and kneading methods. In silico investigation using the molecular docking and Fourier-infrared spectroscopy (FTIR) were employed to estimate binding constant and confirm complex formation, respectively. The in vitro effects of amikacin and imipenem combination in comparison to the effect of imipenem-β- and hydroxy propyl β-cyclodextrin (CD) complexes against Klebsiella spp. and Acinetobacter baumannii were studied. The isolated microorganisms' antimicrobial responsiveness to various antibiotics (19 antibiotics) was evaluated. It was found that piperacillin/tazobactam and gentamycin (resistance rates were 33.3% and 34%, respectively) were the most effective antimicrobials. The in vitro studies have been performed by the checkerboard technique and time-killing assay. The studied combination of amikacin and imipenem showed a substantial drop in bacterial count (p < 0.05). The in vitro studies demonstrated a synergism for the investigated combination. Conventional PCR was used in molecular studies to identify the resistance genes bla IMP and aac (6')-Ib. The blaIMP and aac (6')-Ib were recorded in 38.2% and 3.6% of the studied isolates, respectively. The in vitro studies showed synergistic effects among the tested antibiotics with FICIs of ≤0.5. Finally, the study compared the reduction in bacterial count between the tested antibiotic combinations and imipenem:CD physical and kneaded mixtures. Imipenem:CD inclusion complexes demonstrated a significant bacterial count reduction over the antibiotic combination. These results highlight the emerging role of CDs as safe biofunctional excipients in the combat against superbug bacterial resistance.
Collapse
Affiliation(s)
- Sara Mahmoud Farhan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt; (S.M.F.); (R.M.A.E.-B.)
| | - Rehab Mahmoud Abd El-Baky
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt; (S.M.F.); (R.M.A.E.-B.)
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia 61519, Egypt;
| | - Hala Rady Ahmed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia 61519, Egypt;
| | - Zeinab Fathalla
- Department of Pharmaceutics, Faculty of Pharmacy, Minia University, Minia 61519, Egypt;
| | - Ali Alamri
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62223, Saudi Arabia; (A.A.); (H.A.)
| | - Hamdy Abdelkader
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62223, Saudi Arabia; (A.A.); (H.A.)
| | - Adel Al Fatease
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62223, Saudi Arabia; (A.A.); (H.A.)
| |
Collapse
|
3
|
Abd El-Baky RM, Shady ER, Yahia R, Ahmed FY, Ramadan M, Ahmed HR, Al-Kadmy IMS, Ramadan YN, Hetta HF. COVID-19 associated Mucormycosis among ICU patients: risk factors, control, and challenges. AMB Express 2023; 13:99. [PMID: 37736777 PMCID: PMC10516834 DOI: 10.1186/s13568-023-01599-8] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 08/24/2023] [Indexed: 09/23/2023] Open
Abstract
The severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) pandemic is still difficult to be controlled. The spread of this virus and the emergence of new variants are considered a great challenge worldwide. Disturbance in infection control guidelines implementation, use of steroids, antibiotics, hospital crowdedness, and repeated use of oxygen masks during the management of critically ill COVID-19 patients lead to an increase in the rate of opportunistic infections. So, patients need to fight both the virus with its different variants and opportunistic pathogens including bacteria and fungi especially patients with diabetes mellitus, malignancy, or those who undergo hemodialysis and receive deferoxamine. During the pandemic, many cases of Mucormycosis associated with COVID-19 infection were observed in many countries. In this review, we discuss risk factors that increase the chance of infection by opportunistic pathogens, especially fungal pathogens, recent challenges, and control measures.
Collapse
Affiliation(s)
- Rehab Mahmoud Abd El-Baky
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt.
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, 11566, Egypt.
| | - Esraa R Shady
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, 11566, Egypt
| | - Ramadan Yahia
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, 11566, Egypt
| | - Fatma Y Ahmed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt
| | - Mohamed Ramadan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt
| | - Hala Rady Ahmed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt
| | - Israa M S Al-Kadmy
- Branch of Biotechnology, Department of Biology, College of Science, Mustansiriyah University, POX 10244, Baghdad, Iraq
| | - Yasmin N Ramadan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Assiut University, Assiut, 71515, Egypt.
| | - Helal F Hetta
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, 71515, Egypt.
| |
Collapse
|
4
|
Mahmoud Farhan S, Mahmoud Abd El-Baky R, Mohammad Abdalla SA, Osama El-Gendy A, Farag Azmy A. Efficacy of Amikacin and Imipenem Against Multi-Drug Resistant Gram-Negative Bacteria Isolated from Wound Infections, Egypt. Iran J Med Microbiol 2023; 17:218-229. [DOI: 10.30699/ijmm.17.2.218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
5
|
Ghanem SM, Abd El-Baky RM, Abourehab MAS, Fadl GFM, Gamil NGFM. Prevalence of Quorum Sensing and Virulence Factor Genes Among Pseudomonas aeruginosa Isolated from Patients Suffering from Different Infections and Their Association with Antimicrobial Resistance. Infect Drug Resist 2023; 16:2371-2385. [PMID: 37113530 PMCID: PMC10128085 DOI: 10.2147/idr.s403441] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
Purpose Antimicrobial resistance and virulence genes play important roles in increasing the severity of Pseudomonas aeruginosa infections, especially in hospitalized patients with high antibiotic pressure. Most genes that encode Pseudomonas aeruginosa virulence factors are controlled and regulated by the quorum sensing (QS) system. The aim of this study was to investigate the frequency of some virulence genes (rhlR, rhlI, lasR, lasI, lasB, toxA, aprA, algD, ExoS, and plcH genes) and their association with antibiotic resistance. Methods Antimicrobial susceptibility was determined by Kirby-Bauer agar disk diffusion method. A total of 125 clinical isolates of P. aeruginosa were tested for some virulence genes using polymerase chain reaction (PCR). Results The highest resistance was observed against cefepime (92.8%). Multi-drug resistant (MDR) P. aeruginosa represented 63.2% of total isolates with high distribution among wound isolates (21/79, 26.3% of MDR isolates). LasB was the most prevalent virulence gene among the tested isolates (89.6%) followed by aprA (85.6%), exoS (84%), algD (80%), toxA (76.8%), and plcH (75.2). Furthermore, a significant association (P < 0.05) among most of the tested virulence genes and MDR isolates was found. The presence of more than 5 virulence genes was highly observed among wound infections, otitis media, and respiratory tract infection isolates. Conclusion The complex association of virulence genes including QS system regulating genes with antibiotic resistance indicates the importance of the tested factors in the progression of infections, which is considered a great challenge for the health-care team with the need for specific studies for each area having different antibiotic resistance profiles and the development of effective treatment strategies such as anti-virulent and quorum sensing inhibiting drugs against P. aeruginosa infections.
Collapse
Affiliation(s)
- Shimaa M Ghanem
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Rehab Mahmoud Abd El-Baky
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, Egypt
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, Egypt
| | - Mohamed A S Abourehab
- Department of Pharmaceutics, College of Pharmacy, Umm Al-Qura University, Makkah, 21955, Saudi Arabia
- Correspondence: Mohamed AS Abourehab, Email
| | - Gamal F M Fadl
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Nancy G F M Gamil
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, Egypt
| |
Collapse
|
6
|
Mahmoud Masoud S, Mahmoud Abd El-Baky R, A. Aly S, Ali Ibrahem R. Prevalence of multidrug resistant Escherichia coli recovered from patients suffering from urinary tract infections. Novel Research in Microbiology Journal 2022. [DOI: 10.21608/nrmj.2022.231801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
7
|
Ahmed HR, Waly NGFM, Abd El-Baky RM, Yahia R, Hetta HF, Elsayed AM, Ibrahem RA. Distribution of naturally -occurring NS5B resistance-associated substitutions in Egyptian patients with chronic Hepatitis C. PLoS One 2021; 16:e0249770. [PMID: 33857212 PMCID: PMC8049381 DOI: 10.1371/journal.pone.0249770] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 03/24/2021] [Indexed: 12/15/2022] Open
Abstract
Background NS5B polymerase inhibitors represent the cornerstone of the present treatment of Hepatitis C virus infection (HCV). Naturally occurring substitution mutations to NS5B inhibitors have been recorded. The current study intended to demonstrate possible natural direct acting antiviral (DAA)—mutations of the HCV NS5B region in HCV patients in Minia governorate, Egypt. Methods Samples were collected from 27 treatment-naïve HCV patients and 8 non-responders. Out of 27 treatment-naïve patients, 17 NS5B sequences (amino acids 221–345) from treatment-naïve patients and one sample of non-responders were successfully amplified. Nucleotide sequences have been aligned, translated into amino acids, and compared to drug resistance mutations reported in the literature. Results NS5B amino acid sequence analysis ensures several novel NS5B mutations existence (more than 40 substitution mutations) that have not been previously documented to be correlated with a resistant phenotype. It was found that K304R (82.4%), E327D and P300T (76.5% each) substitutions were the most distributed in the tested samples, respectively. S282T, the major resistance mutation that induces high sofosbuvir-resistance level in addition to other reported mutations (L320F/C) and (C316Y/N) were not recognized. Q309R mutation is a ribavirin-associated resistance, which was recognized in one strain (5.9%) of genotype 1g sequences. Besides, one substitution mutation (E237G) was identified in the successfully amplified non-responder sample. Conclusion Our study showed various combinations of mutations in the analyzed NS5B genes which could enhance the possibility of therapy failure in patients administered regimens including multiple DAA.
Collapse
Affiliation(s)
- Hala Rady Ahmed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Nancy G. F. M. Waly
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Rehab Mahmoud Abd El-Baky
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, Egypt
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, Egypt
- * E-mail: ,
| | - Ramadan Yahia
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, Egypt
| | - Helal F. Hetta
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Merit University, Sohag, Egypt
| | - Amr M. Elsayed
- Tropical Medicine and Gastroenterology, Faculty of Medicine, Minia University, Minia, Egypt
| | - Reham Ali Ibrahem
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, Egypt
| |
Collapse
|
8
|
Abd El-Baky RM, Mandour SA, Ahmed EF, Hashem ZS, Sandle T, Mohamed DS. Virulence profiles of some Pseudomonas aeruginosa clinical isolates and their association with the suppression of Candida growth in polymicrobial infections. PLoS One 2020; 15:e0243418. [PMID: 33290412 PMCID: PMC7723275 DOI: 10.1371/journal.pone.0243418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 11/22/2020] [Indexed: 11/18/2022] Open
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen that can cause a variety of diseases especially in the hospital environment. However, this pathogen also exhibits antimicrobial activity against Gram-positive bacteria and fungi. This study aimed to characterize different virulence factors, secreted metabolites and to study their role in the suppression of Candida growth. Fifteen P. aeruginosa isolates were tested for their anticandidal activity against 3 different Candida spp. by the cross-streak method. The effect on hyphae production was tested microscopically using light and scanning electron microscopy (SEM). Polymerase chain reaction was used in the detection of some virulence genes. Lipopolysaccharide profile was performed using SDS-polyacrylamide gel stained with silver. Fatty acids were analyzed by GC-MS as methyl ester derivatives. It was found that 5 P. aeruginosa isolates inhibited all tested Candida spp. (50-100% inhibition), one isolate inhibited C. glabrata only and 3 isolates showed no activity against the tested Candida spp. The P. aeruginosa isolates inhibiting all Candida spp. were positive for all virulence genes. GC-Ms analysis revealed that isolates with high anticandidal activity showed spectra for several compounds, each known for their antifungal activity in comparison to those with low or no anticandidal activity. Hence, clinical isolates of P. aeruginosa showed Candida species-specific interactions by different means, giving rise to the importance of studying microbial interaction in polymicrobial infections and their contribution to causing disease.
Collapse
Affiliation(s)
- Rehab Mahmoud Abd El-Baky
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, Egypt
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, Egypt
| | - Sahar A. Mandour
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, Egypt
| | - Eman Farouk Ahmed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, Egypt
| | - Zeinab Shawky Hashem
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Tim Sandle
- School of Health Sciences, Division of Pharmacy & Optometry, University of Manchester, Manchester, United Kingdom
| | - Doaa Safwat Mohamed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, Egypt
| |
Collapse
|
9
|
Abd El-Baky RM, Ibrahim RA, Mohamed DS, Ahmed EF, Hashem ZS. Prevalence of Virulence Genes and Their Association with Antimicrobial Resistance Among Pathogenic E. coli Isolated from Egyptian Patients with Different Clinical Infections. Infect Drug Resist 2020; 13:1221-1236. [PMID: 32425560 PMCID: PMC7196243 DOI: 10.2147/idr.s241073] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [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: 12/04/2019] [Accepted: 04/04/2020] [Indexed: 12/20/2022] Open
Abstract
Introduction Escherichia (E.) coli can cause intestinal and extra-intestinal infections which ranged from mild to life-threatening infections. The severity of infection is a product of many factors including virulence properties and antimicrobial resistance. Objectives To determine the antibiotic resistance pattern, the distribution of virulence factors and their association with one another and with some selected resistance genes. Methods Virulence properties were analyzed phenotypically while antimicrobial susceptibility was tested by Kirby-Bauer agar disc diffusion method. In addition, 64 E. coli isolates were tested for 6 colicin genes, fimH, hlyA, traT, csgA, crl virulence genes and bla−CTX-M-15, bla−oxa-2, and bla−oxa-10 resistance genes by polymerase chain reaction (PCR). Results Extra-intestinal pathogenic E. coli isolated from urine and blood samples represented a battery of virulence factors and resistance genes with a great ability to produce biofilm. Also, a significant association (P<0.05) among most of the tested colicin, virulence and resistance genes was observed. The observed associations indicate the importance and contribution of the tested factors in the establishment and the progress of infection especially with Extra-intestinal E. coli (ExPEC) which is considered a great challenging health problem. Conclusion There is a need for studying how to control these factors to decrease the rate and the severity of infections. The relationship between virulence factors and resistance genes is complex and needs more studies that should be specific for each area.
Collapse
Affiliation(s)
- Rehab Mahmoud Abd El-Baky
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia 61519, Egypt.,Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt
| | - Reham Ali Ibrahim
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Doaa Safwat Mohamed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt
| | - Eman Farouk Ahmed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt
| | - Zeinab Shawky Hashem
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| |
Collapse
|
10
|
Mohamed DS, Abd El-Baky RM, Sandle T, Mandour SA, Ahmed EF. Antimicrobial Activity of Silver-Treated Bacteria against other Multi-Drug Resistant Pathogens in Their Environment. Antibiotics (Basel) 2020; 9:antibiotics9040181. [PMID: 32326384 PMCID: PMC7235873 DOI: 10.3390/antibiotics9040181] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [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: 03/12/2020] [Revised: 04/08/2020] [Accepted: 04/10/2020] [Indexed: 11/16/2022] Open
Abstract
Silver is a potent antimicrobial agent against a variety of microorganisms and once the element has entered the bacterial cell, it accumulates as silver nanoparticles with large surface area causing cell death. At the same time, the bacterial cell becomes a reservoir for silver. This study aims to test the microcidal effect of silver-killed E. coli O104: H4 and its supernatant against fresh viable cells of the same bacterium and some other species, including E. coli O157: H7, Multidrug Resistant (MDR) Pseudomonas aeruginosa and Methicillin Resistant Staphylococcus aureus (MRSA). Silver-killed bacteria were examined by Transmission Electron Microscopy (TEM). Agar well diffusion assay was used to test the antimicrobial efficacy and durability of both pellet suspension and supernatant of silver-killed E. coli O104:H4 against other bacteria. Both silver-killed bacteria and supernatant showed prolonged antimicrobial activity against the tested strains that extended to 40 days. The presence of adsorbed silver nanoparticles on the bacterial cell and inside the cells was verified by TEM. Silver-killed bacteria serve as an efficient sustained release reservoir for exporting the lethal silver cations. This promotes its use as a powerful disinfectant for polluted water and as an effective antibacterial which can be included in wound and burn dressings to overcome the problem of wound contamination.
Collapse
Affiliation(s)
- Doaa Safwat Mohamed
- Microbiology and Immunology Department, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt; (D.S.M.); (S.A.M.); (E.F.A.)
| | - Rehab Mahmoud Abd El-Baky
- Microbiology and Immunology Department, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt; (D.S.M.); (S.A.M.); (E.F.A.)
- Microbiology and Immunology Department, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
- Correspondence:
| | - Tim Sandle
- School of Health Sciences, Division of Pharmacy & Optometry, University of Manchester, Manchester M13 9NT, UK;
| | - Sahar A. Mandour
- Microbiology and Immunology Department, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt; (D.S.M.); (S.A.M.); (E.F.A.)
| | - Eman Farouk Ahmed
- Microbiology and Immunology Department, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt; (D.S.M.); (S.A.M.); (E.F.A.)
| |
Collapse
|
11
|
Zaghlool RS, El-Baky RMA, Abdelmoaty MMM, Riad MI. In Vitro Evaluation of Antibacterial Effect of a New Bioactive Restorative Material (Activa). Indian Journal of Public Health Research & Development 2020; 11:1826. [DOI: 10.37506/v11/i2/2020/ijphrd/195236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
12
|
Ramadan Mohamed E, Ali MY, Waly NGFM, Halby HM, Abd El-Baky RM. The Inc FII Plasmid and its Contribution in the Transmission of blaNDM-1 and blaKPC-2 in Klebsiella pneumoniae in Egypt. Antibiotics (Basel) 2019; 8:antibiotics8040266. [PMID: 31847288 PMCID: PMC6963397 DOI: 10.3390/antibiotics8040266] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 11/18/2019] [Revised: 12/05/2019] [Accepted: 12/09/2019] [Indexed: 12/25/2022] Open
Abstract
The emergence of blaKPC-2 and blaNDM-1 producing Klebsiella pneumoniae represents a great problem in many Egyptian hospitals. One hundred and twenty-six K. pneumoniae isolates from patients admitted to Assiut University Hospital were identified by an API20E kit. Carbapenemase-producing K. pneumoniae (CPKP) was detected by the modified carbapenem inactivation method (mCIM), the EDTA-modified carbapenem inactivation method (eCIM), and an E-test. Based on the polymerase chain reaction, all isolates were negative for bla-VIM-1 and bla-IMP-1, fifteen of these isolates were positive for both blaKPC-2 and blaNDM-1, two isolates were positive for blaKPC-2 only, and twenty-eight isolates were positive for bla-NDM-1 only. Although one isolate was positive for the string test, all CPKP isolates were negative for capsular genes. Only 71.1% of CPKP transferred their plasmids to their corresponding transconjugants (E. coli J53). The resistance patterns of the clinical isolates and their transconjugates were similar, except for 12 isolates, which showed differences with their transconjugates in the resistance profile of four antibiotics. Molecular typing of the plasmids based on replicon typing showed that Inc FIIK and FII plasmids predominated in isolates and their transconjugants carrying blaKPC-2 and/or blaNDM-1. Conjugative Inc FII plasmids play an important role in the spread of CPKP, and their recognition is essential to limit their spread.
Collapse
Affiliation(s)
- Eman Ramadan Mohamed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Al-Azhar University, Assuit 11651, Egypt; (E.R.M.); (M.Y.A.); (H.M.H.)
| | - Mamdouh Yones Ali
- Department of Microbiology and Immunology, Faculty of Pharmacy, Al-Azhar University, Assuit 11651, Egypt; (E.R.M.); (M.Y.A.); (H.M.H.)
| | - Nancy G F M Waly
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia 61519, Egypt;
| | - Hamada Mohamed Halby
- Department of Microbiology and Immunology, Faculty of Pharmacy, Al-Azhar University, Assuit 11651, Egypt; (E.R.M.); (M.Y.A.); (H.M.H.)
| | - Rehab Mahmoud Abd El-Baky
- Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia 61519, Egypt;
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia 61519, Egypt
- Correspondence: ; Tel.: +20-1092487412
| |
Collapse
|
13
|
Safwat Mohamed D, Farouk Ahmed E, Mohamed Mahmoud A, Abd El-Baky RM, John J. Isolation and evaluation of cocktail phages for the control of multidrug-resistant Escherichia coli serotype O104: H4 and E. coli O157: H7 isolates causing diarrhea. FEMS Microbiol Lett 2018; 365. [DOI: 10.1093/femsle/fnx275] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023] Open
|
14
|
Ashraf A, Yousri F, Taha N, Abd El-Waly O, El-Kareem Ramadan A, Ismail E, Hamada R, Khalaf M, Refaee M, Ali S, Madyn A, Mahmoud Abd El-Baky R. Effect of Some Non steroidal Anti-Inflammatory Drugs on Growth, Adherence and Mature Biofilms of <i>Candida spp</i><i>.</i>. AJMR 2015; 3:1-7. [DOI: 10.12691/ajmr-3-1-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
|
15
|
Mahmoud Abd El-Baky R, Mohamed Mohamed Abo El Ela D, Fadl Mamoud Gad G. N-acetylcysteine Inhibits and Eradicates<i> Candida albicans </i>Biofilms. AJIDM 2014; 2:122-130. [DOI: 10.12691/ajidm-2-5-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
16
|
Gad GFM, El-Feky MA, El-Rehewy MS, Hassan MA, Abolella H, El-Baky RMA. Detection of icaA, icaD genes and biofilm production by Staphylococcus aureus and Staphylococcus epidermidis isolated from urinary tract catheterized patients. J Infect Dev Ctries 2009; 3:342-51. [PMID: 19759503 DOI: 10.3855/jidc.241] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2008] [Indexed: 10/31/2022] Open
Abstract
BACKGROUND Staphylococci are a common cause of catheter-associated urinary tract infections. The present study evaluated biofilm forming capacity and the presence of both icaA and icaD genes among staphylococci strains isolated from patients undergoing ureteral catheterization. METHODOLOGY Different bacterial strains were isolated from urine and stents segments collected from 100 patients. Strains were identified by traditional microbiological methods. Stents were examined for biofilm using a scanning electron microscope (SEM). Staphylococcal isolates were tested for their ability to produce biofilm using the tissue culture plate assay method (TCP). The presence of icaA and icaD genes was determined by PCR technique. RESULTS Fifty-three staphylococcal strains were isolated and identified from 284 samples (18.7%). Forty-six staphylococcal strains were isolated from stent segment cultures while only seven strains were isolated from urine samples at the day of stent removal. S. aureus represented 6.3%, and S. epidermidis represented 12.3%. Out of the 18 S. aureus strains, 15 (83.3%) were biofilm producers and out of 35 S. epidermidis strains, 31 (88.6%) were biofilm producers. Staphylococcal strains were further classified as high (56.6%), moderate (30.2%) and non biofilm producers (13.2%). All biofilm producing strains were positive for icaA and icaD genes, and all biofilm negative strains were negative for both genes. CONCLUSION Staphylococci isolated from catheter segments showed a higher extent of biofilm production than that isolated from urine samples. All biofilm producing staphylococci were positive for icaA and icaD genes, which indicates the important role of ica genes as virulence markers in staphylococcal infections associated with urinary catheterization.
Collapse
|