1
|
Farhan RE, Solyman SM, Hanora AM, Azab MM. Molecular detection of different virulence factors genes harbor pslA, pelA, exoS, toxA and algD among biofilm-forming clinical isolates of Pseudomonas aeruginosa. Cell Mol Biol (Noisy-le-grand) 2023; 69:32-39. [PMID: 37571905 DOI: 10.14715/cmb/2023.69.5.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Indexed: 08/13/2023]
Abstract
Pseudomonas aeruginosa (P. aeruginosa) is considered as the foremost cause of hospital-acquired infections due to its innate and plasmid-mediated resistance to multiple antibiotics making it a multi-drug resistant (MDR) pathogen. This study aimed to determine the biofilm formation ability and the presence of different virulence factors genes (pslA, pelA, exoS, toxA and algD) among biofilm-forming strains of P. aeruginosa clinical isolates from burn units in Ismailia Hospitals, Egypt. In our cross-sectional study, one hundred and twenty-six (126) non-duplicate clinical P. aeruginosa isolates were recovered from 450 clinical specimens from burn units in Ismailia Hospitals. The antibiotic sensitivity of strong and moderate biofilm producer isolates was investigated using the disc diffusion method. The isolated bacteria were tested for their ability to form biofilm using a microtiter plate assay. The expression of (pslA, pelA, exoS, toxA and algD) genes in biofilm producers isolates was detected using PCR. The MPA detected 80% (95 /126) isolates as biofilm producers, 18% (22/126) were strong biofilm producers, 34% (43/126) were moderate biofilm producers, 28% (35/126) were weak biofilm producers and 20% (31/126) non-biofilm producers. Susceptibility pattern analysis of biofilm-forming P. aeruginosa isolates (95) detected that 60% (68/ 95) were multi-drug resistant isolates (MDR). Resistance to all used antibiotics and multidrug resistance was higher among biofilm-producing than non-biofilm-producing strains, but the difference was statistically non-significant. Investigation of virulence factors associated genes revealed that 96%, 94%, 86.4%, 80.0% and 74% of the biofilm producers isolates were harboring algD, pslA, pel A, toxA and exoS gene, respectively. The present study confirmed that antimicrobial resistance and virulence genes were more prominent in biofilm-producing P. aeruginosa than in non-biofilm-producers.
Collapse
Affiliation(s)
- Rehab E Farhan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University Pharmacy, Ismailia, 41522, Egypt.
| | - Samar M Solyman
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University Pharmacy, Ismailia, 41522, Egypt.
| | - Amro M Hanora
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University Pharmacy, Ismailia, 41522, Egypt.
| | - Marwa M Azab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University Pharmacy, Ismailia, 41522, Egypt.
| |
Collapse
|
2
|
Rizk M, Mahmoud ZM, Azab MM. Spectrofluorimetric and stability-indicating thin layer chromatographic methods for determination of cabergoline, a prolactin inhibitor in pharmaceuticals. Spectrochim Acta A Mol Biomol Spectrosc 2022; 281:121639. [PMID: 35872427 DOI: 10.1016/j.saa.2022.121639] [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: 02/09/2022] [Revised: 06/22/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Simple, Economic, and selective spectrofluorimetric and stability-indicating thin layer chromatographic (TLC) with fluorescence detection methods were developed for the determination of Cabergoline, a potent prolactin inhibitor, and long-acting dopamine receptor agonist, in bulk drug and pharmaceutical dosage forms based on its native fluorescence. Method A was based on measuring the fluorescence intensity at 338 nm after excitation at 280 nm. The measured fluorescence was directly proportional to the concentration of the drug over the range of 50.0-450.0 ng/mL with a limit of detection of 14.4 and a limit of quantification of 43.7 ng/mL. The TLC method (method B) was employed on TLC silica gel 60 F254 aluminum sheets previously exposed to concentrated (30-34 %) hydrochloric acid vapor. Ethyl acetate: n-hexane: diethylamine system with a ratio of (10: 3: 1, v/v/v) developing system was used. The retention factor (Rf) of Cabergoline was 0.58 ± 0.03. Linearity was found to be in the range of 100.0-1500.0 ng/band. The LOD and LOQ were 25.4 and 76.9 ng/band, respectively. The methods were validated successfully according to ICH guidelines.
Collapse
Affiliation(s)
- M Rizk
- Analytical Chemistry Department, Faculty of Pharmacy, Helwan University, Cairo 11795, Egypt
| | - Zainab M Mahmoud
- Analytical Chemistry Department, Faculty of Pharmacy, Helwan University, Cairo 11795, Egypt.
| | - Marwa M Azab
- Analytical Chemistry Department, Faculty of Pharmacy, Helwan University, Cairo 11795, Egypt
| |
Collapse
|
3
|
Azab MM, Mostafa FM, Khalil M, Salama M, Abdelrahman AA, Ali AA. Association of TLR7 and TLR9 genes polymorphisms in Egyptian patients with systemic lupus erythematosus. Heliyon 2022; 8:e11680. [DOI: 10.1016/j.heliyon.2022.e11680] [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] [Received: 05/30/2022] [Revised: 09/26/2022] [Accepted: 11/11/2022] [Indexed: 11/22/2022] Open
|
4
|
Behairy MY, Abdelrahman AA, Toraih EA, Ibrahim EEDA, Azab MM, Sayed AA, Hashem HR. Investigation of TLR2 and TLR4 Polymorphisms and Sepsis Susceptibility: Computational and Experimental Approaches. Int J Mol Sci 2022; 23:ijms231810982. [PMID: 36142893 PMCID: PMC9504743 DOI: 10.3390/ijms231810982] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/13/2022] [Indexed: 11/19/2022] Open
Abstract
Toll-like receptors (TLR) play an eminent role in the regulation of immune responses to invading pathogens during sepsis. TLR genetic variants might influence individual susceptibility to developing sepsis. The current study aimed to investigate the association of genetic polymorphisms of the TLR2 and TLR4 with the risk of developing sepsis with both a pilot study and in silico tools. Different in silico tools were used to predict the impact of our SNPs on protein structure, stability, and function. Furthermore, in our prospective study, all patients matching the inclusion criteria in the intensive care units (ICU) were included and followed up, and DNA samples were genotyped using real-time polymerase chain reaction (RT-PCR) technology. There was a significant association between TLR2 Arg753Gln polymorphisms and sepsis under the over-dominant model (p = 0.043). In contrast, we did not find a significant difference with the TLR4 Asp299Gly polymorphism with sepsis. However, there was a significant association between TLR4 Asp299Gly polymorphisms and Acinetobacter baumannii infection which is quite a virulent organism in ICU (p = 0.001) and post-surgical cohorts (p = 0.033). Our results conclude that the TLR2 genotype may be a risk factor for sepsis in adult patients.
Collapse
Affiliation(s)
- Mohammed Y. Behairy
- Department of Microbiology and Immunology, Faculty of Pharmacy, University of Sadat City, Sadat City 32958, Egypt
| | - Ali A. Abdelrahman
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Eman A. Toraih
- Department of Surgery, School of Medicine, Tulane University, New Orleans, LA 70112, USA
- Genetics Unit, Department of Histology & Cell Biology, Faculty of Medicine, Suez Canal University, Ismailia 41522, Egypt
| | - Emad El-Deen A. Ibrahim
- Department of Anesthesia, Intensive Care and Pain Management, Faculty of Medicine, Suez Canal University, Ismailia 41522, Egypt
| | - Marwa M. Azab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
- Correspondence: (M.M.A.); (A.A.S.); Tel.: +20-10-2429-9630 (M.M.A.); +966-14-861-8888 (A.A.S.)
| | - Anwar A. Sayed
- Department of Medical Microbiology and Immunology, Taibah University, Madinah 42353, Saudi Arabia
- Department of Surgery and Cancer, Imperial College London, London SW7 2BX, UK
- Correspondence: (M.M.A.); (A.A.S.); Tel.: +20-10-2429-9630 (M.M.A.); +966-14-861-8888 (A.A.S.)
| | - Hany R. Hashem
- Department of Microbiology and Immunology, Faculty of Pharmacy, Fayoum University, Fayoum 63514, Egypt
| |
Collapse
|
5
|
Algammal AM, Abo Hashem ME, Alfifi KJ, Al-Otaibi AS, Alatawy M, ElTarabili RM, Abd El-Ghany WA, Hetta HF, Hamouda AM, Elewa AA, Azab MM. Sequence Analysis, Antibiogram Profile, Virulence and Antibiotic Resistance Genes of XDR and MDR Gallibacterium anatis Isolated from Layer Chickens in Egypt. Infect Drug Resist 2022; 15:4321-4334. [PMID: 35971557 PMCID: PMC9375569 DOI: 10.2147/idr.s377797] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [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: 06/08/2022] [Accepted: 08/01/2022] [Indexed: 11/23/2022] Open
Abstract
Background Gallibacterium anatis is incriminated frequently in severe economic losses and mortalities in the poultry industry. This study aimed to detect the prevalence of G. anatis in layer chickens, sequence analysis, the antibiogram profiles, and PCR screening of virulence determinants and antibiotic resistance genes. Methods Accordingly, 300 samples (tracheal swabs, ovary and oviduct, and lung) were randomly collected from 100 diseased layer chickens from private commercial layer farms at Elsharkia Governorate, Egypt. The bacteriological examination was carried out. The retrieved isolates were tested for 16S rRNA-23S rRNA gene sequencing, antibiogram profiling, PCR screening of virulence (gtxA, fifA, and gyrB), and antibiotic resistance genes (blaROB, aphA1, tetB, and tetH). Results The prevalence of G. anatis was 25% in the examined diseased layer chickens. The sequence analyses emphasized that the tested strains derived from a common ancestor and exhibited a notable genetic similarity with other G. anatis strains from USA, China, and Denmark. The isolated G. anatis strains were highly resistant to sulfamethoxazole-trimethoprim, oxytetracycline, penicillin, ampicillin, kanamycin, neomycin, and erythromycin. The PCR revealed that the retrieved G. anatis strains carried gtxA, gyrB, and fifA virulence genes with a prevalence of 100%, 100%, and 38.3%, respectively. Approximately 30.1% of the retrieved G. anatis isolates were XDR to six antimicrobial classes and harbored blaROB, aphA1, and tetB resistance genes. Moreover, 20.5% of the isolated G. anatis strains were MDR to three different classes and carried blaROB and tetH resistance genes. Conclusion Briefly, this study emphasized the existence of XDR and MDR G. anatis strains in poultry. Florfenicol and norfloxacin displayed a promising antimicrobial effect against the emerging XDR and MDR G. anatis in poultry. The emergence of XDR and MDR G. anatis is considered a public health alarm.
Collapse
Affiliation(s)
- Abelazeem M Algammal
- Department of Bacteriology, Immunology, and Mycology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Marwa E Abo Hashem
- Department of Bacteriology, Immunology, and Mycology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Khyreyah J Alfifi
- Biology Department, Faculty of Science, Tabuk University, Tabuk, Saudi Arabia
| | - Amenah S Al-Otaibi
- Biology Department, Faculty of Science, Tabuk University, Tabuk, Saudi Arabia
| | - Marfat Alatawy
- Biology Department, Faculty of Science, Tabuk University, Tabuk, Saudi Arabia
| | - Reham M ElTarabili
- Department of Bacteriology, Immunology, and Mycology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Wafaa A Abd El-Ghany
- Poultry Diseases Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Helal F Hetta
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Ahmed M Hamouda
- Animal Health Research Institute, Zagazig Branch, Zagazig, Egypt
| | - Amira A Elewa
- Animal Health Research Institute, Zagazig Branch, Zagazig, Egypt
| | - Marwa M Azab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| |
Collapse
|
6
|
Behairy MY, Abdelrahman ALA, Abdallah HY, Ibrahim EEDA, Sayed AA, Azab MM. In silico analysis of missense variants of the C1qA gene related to infection and autoimmune diseases. J Taibah Univ Med Sci 2022; 17:1074-1082. [PMID: 36212588 PMCID: PMC9519598 DOI: 10.1016/j.jtumed.2022.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/28/2022] [Accepted: 04/28/2022] [Indexed: 11/15/2022] Open
Abstract
Objectives C1q is a key activator of the classical pathway of the complement system and exerts consequences relating to opsonization and phagocytosis. The C1qA gene is one of three genes encoding the C1q molecule. Defects in C1q, and especially in C1qA, have been linked to an increased susceptibility to infection, sepsis, and systemic lupus erythematosus. These defects could arise from missense single nucleotide polymorphisms (SNPs) and their deleterious impacts on protein structure and function. Thus, identifying high-risk missense SNPs in C1qA has become a necessity if we are to identify appropriate measures for prevention and management of affected patients. Methods A comprehensive in silico study was conducted to screen the 184 missense SNPs in the C1qA gene using different tools with different algorithms and approaches. We investigated the impact of SNPs on protein function, stability, and structure. In addition, we identified the location of the SNPs on protein domains, secondary structure alignment, and the phylogenetic conservation of their positions. Results Of the 184 missense SNPs, 10 SNPs were predicted to be the most damaging to protein function and structure. Conclusion Ten missense SNPs were predicted to have the highest risk of damaging protein function and structure, thus leading to infection, sepsis, and systemic lupus erythematosus. These 10 SNPs constitute the best candidates for further experimental investigations.
Collapse
|
7
|
Algammal AM, Alfifi KJ, Mabrok M, Alatawy M, Abdel-moneam DA, Alghamdi S, Azab MM, Ibrahim RA, Hetta HF, El-Tarabili RM. Newly Emerging MDR B. cereus in Mugil seheli as the First Report Commonly Harbor nhe, hbl, cytK, and pc-plc Virulence Genes and bla1, bla2, tetA, and ermA Resistance Genes. Infect Drug Resist 2022; 15:2167-2185. [PMID: 35498633 PMCID: PMC9052338 DOI: 10.2147/idr.s365254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 03/09/2022] [Accepted: 04/15/2022] [Indexed: 01/23/2023] Open
Abstract
Background Bacillus cereus is a common food poisoning pathogen in humans. This study aimed to investigate the prevalence, molecular typing, antibiogram profile, pathogenicity, dissemination of virulence and antibiotic resistance genes associated with natural B. cereus infection among Mugil seheli. Methods Consequently, 120 M. seheli (40 healthy and 80 diseased) were obtained from private fish farms in Port-said Governorate, Egypt. Afterward, samples were processed for clinical, post-mortem, and bacteriological examinations. The recovered isolates were tested for antimicrobial susceptibility, phenotypic assessment of virulence factors, pathogeneicity, and PCR-based detection of virulence and antibiotic resistance genes. Results B. cereus was isolated from 30 (25%) examined fish; the highest prevalence was noticed in the liver (50%). The phylogenetic and sequence analyses of the gyrB gene revealed that the tested B. cereus isolate displayed a high genetic similarity with other B. cereus strains from different origins. All the recovered B. cereus isolates (n =60, 100%) exhibited β-hemolytic and lecithinase activities, while 90% (54/60) of the tested isolates were biofilm producers. Using PCR, the tested B. cereus isolates harbor nhe, hbl, cytK, pc-plc, and ces virulence genes with prevalence rates of 91.6%, 86.6%, 83.4%, 50%, and 33.4%, respectively. Moreover, 40% (24/60) of the tested B. cereus isolates were multidrug-resistant (MDR) to six antimicrobial classes and carried the bla1, bla2, tetA, and ermA genes. The experimentally infected fish with B. cereus showed variable mortality in direct proportion to the inoculated doses. Conclusion As far as we know, this is the first report that emphasized the existence of MDR B. cereus in M. seheli that reflects a threat to the public health and the aquaculture sector. Newly emerging MDR B. cereus in M. seheli commonly carried virulence genes nhe, hbl, cytK, and pc-plc, as well as resistance genes bla1, bla2, tetA, and ermA.
Collapse
Affiliation(s)
- Abdelazeem M Algammal
- Department of Bacteriology, Immunology, and Mycology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt
| | - Khyreyah J Alfifi
- Biology Department, Faculty of Science, Tabuk University, Tabuk, 71421, Saudi Arabia
| | - Mahmoud Mabrok
- Department of Fish Diseases and Management, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt
| | - Marfat Alatawy
- Biology Department, Faculty of Science, Tabuk University, Tabuk, 71421, Saudi Arabia
| | - Dalia A Abdel-moneam
- Department of Aquatic Animal Medicine and Management, Faculty of Veterinary Medicine, Cairo University, Cairo, 12613, Egypt
| | - Saad Alghamdi
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, 21955, Saudi Arabia
| | - Marwa M Azab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia, 41522, Egypt
| | - Reham A Ibrahim
- Marine Environmental Division- National Institute of Oceanography and Fisheries (NIOF), Suez, 43511, Egypt
| | - Helal F Hetta
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, 71515, Egypt
| | - Reham M El-Tarabili
- Department of Bacteriology, Immunology, and Mycology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt
| |
Collapse
|
8
|
Sultan MA, Abou El-Alamin MM, Wark AW, Azab MM. Detection and quantification of warfarin in pharmaceutical dosage form and in spiked human plasma using surface enhanced Raman scattering. Spectrochim Acta A Mol Biomol Spectrosc 2020; 228:117533. [PMID: 31753661 DOI: 10.1016/j.saa.2019.117533] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 05/09/2019] [Revised: 08/21/2019] [Accepted: 09/13/2019] [Indexed: 06/10/2023]
Abstract
Analytical approaches for the quantitation of warfarin in plasma are high in demand. In this study, a novel surface enhanced Raman scattering (SERS) technique for the quantification of the widely used anticoagulant warfarin sodium in pharmaceutical dosage form and in spiked human plasma was developed. The colloidal-based SERS measurements were carefully optimized considering the laser wavelength, the type of metal nanoparticles, their surface functionalization and concentration as well as the time required for warfarin to associate with the metal surface. Poly(diallyldimethylammonium chloride) coated silver nanoparticles (PDDA-AgNPs) were established as a substrate which greatly enhanced the weak warfarin Raman signal with high reproducibility. The limit of detection was calculated in both water and human plasma to be 0.56 nM (0.17 ngmL-1) and 0.25 nM (0.08 ngmL-1) respectively, with a high degree of accuracy and reproducibility. The proposed method is simple, economical, and easily applied for routine application requiring only small plasma samples and also could be potentially useful for pharmacokinetic research on warfarin.
Collapse
Affiliation(s)
- Maha A Sultan
- Analytical Chemistry Department, Faculty of Pharmacy, Helwan University, 11795, Cairo, Egypt
| | - Maha M Abou El-Alamin
- Analytical Chemistry Department, Faculty of Pharmacy, Helwan University, 11795, Cairo, Egypt
| | - Alastair W Wark
- Centre for Molecular Nanometrology, Dept. of Pure & Applied Chemistry, Technology and Innovation Centre, 99 George St, University of Strathclyde, Glasgow, G1 1RD, UK
| | - Marwa M Azab
- Analytical Chemistry Department, Faculty of Pharmacy, Helwan University, 11795, Cairo, Egypt; Centre for Molecular Nanometrology, Dept. of Pure & Applied Chemistry, Technology and Innovation Centre, 99 George St, University of Strathclyde, Glasgow, G1 1RD, UK.
| |
Collapse
|
9
|
Sultan MA, Abou El-Alamin MM, Wark AW, Azab MM. Stability-indicating micellar enhanced spectro-fluorometric determination of Daclatasvir in its tablet and spiked human plasma. Spectrochim Acta A Mol Biomol Spectrosc 2019; 211:52-58. [PMID: 30503988 DOI: 10.1016/j.saa.2018.11.023] [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: 08/14/2018] [Revised: 11/11/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
A fast, simple and sensitive micellar enhanced spectrofluorimetric method is performed for the determination of Daclatasvir dihydrochloride (DAC) in its pharmaceutical dosage form and in spiked human plasma. The fluorescence intensity (FI) was measured at 367 nm after excitation at 300 nm. In aqueous solution, the FI of DAC was greatly enhanced by >110% in the presence of sodium dodecyl sulphate (SDS). The detection method was linear over the range of 12.93 to 161.60 ng/mL, with a limit of detection of 1.75 ng/mL. The proposed method was successfully applied to the determination of DAC in its pharmaceutical dosage form and the mean % recovery of DAC in spiked human plasma was 95.42 ± 2.52. The developed methodology was also extended to stress studies of DAC after exposure to different forced degradation conditions including acidic, alkaline, photolytic, thermal and oxidative environments.
Collapse
Affiliation(s)
- Maha A Sultan
- Analytical Chemistry Department, Faculty of Pharmacy, Helwan University, 11795 Cairo, Egypt
| | - Maha M Abou El-Alamin
- Analytical Chemistry Department, Faculty of Pharmacy, Helwan University, 11795 Cairo, Egypt
| | - Alastair W Wark
- Centre for Molecular Nanometrology, WESTChem, Dept. of Pure & Applied Chemistry, Technology & Innovation Centre, University of Strathclyde, Glasgow G1 1RD, UK
| | - Marwa M Azab
- Analytical Chemistry Department, Faculty of Pharmacy, Helwan University, 11795 Cairo, Egypt.
| |
Collapse
|
10
|
Ejike CE, Almaweri AA, Al-marby A, Zaitone SA, Al-moraissi EA, Azab MM, Al Refai ANM, Abdalla SM, Hassan MM, Hannah PA. Antifungal activity of silver nanoparticles in a murine model of oral candidiasis. Turk J Pharm Sci 2018. [DOI: 10.4274/tjps.52714] [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: 12/01/2022]
|
11
|
Azab MM, Cherif R, Finnie AL, Abou El-Alamin MM, Sultan MA, Wark AW. Optimized polydopamine coating and DNA conjugation onto gold nanorods for single nanoparticle bioaffinity measurements. Analyst 2018. [DOI: 10.1039/c7an02019h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The formation of a stable polydopamine layer on a nanorod surface depends on the underlying chemistry and optimization enables the formation of packed ssDNA monolayers for bioaffinity applications.
Collapse
Affiliation(s)
- Marwa M. Azab
- Centre for Molecular Nanometrology
- Technology and Innovation Centre
- Dept. of Pure & Applied Chemistry
- University of Strathclyde
- Glasgow
| | - Rédha Cherif
- Faculté de Chimie
- Université Pierre et Marie Curie
- 75252 Cedex 05
- France
| | - Aryanne L. Finnie
- Centre for Molecular Nanometrology
- Technology and Innovation Centre
- Dept. of Pure & Applied Chemistry
- University of Strathclyde
- Glasgow
| | | | - Maha A. Sultan
- Analytical Chemistry Department
- Faculty of Pharmacy
- Helwan University
- Cairo
- Egypt
| | - Alastair W. Wark
- Centre for Molecular Nanometrology
- Technology and Innovation Centre
- Dept. of Pure & Applied Chemistry
- University of Strathclyde
- Glasgow
| |
Collapse
|
12
|
Amin ME, Azab MM, Hanora AM, Abdalla S. Antifungal activity of silver nanoparticles on Fluconazole resistant Dermatophytes identified by (GACA)4 and isolated from primary school children suffering from Tinea Capitis in Ismailia - Egypt. ACTA ACUST UNITED AC 2017; 63:63-67. [PMID: 29208175 DOI: 10.14715/cmb/2017.63.11.12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 07/24/2017] [Accepted: 11/04/2017] [Indexed: 11/18/2022]
Abstract
Fungal infections caused by dermatophytes recently became more common. Available antifungal drugs are limited because of emergence of resistant strains due to prophylaxis with them, so there is an urgent need for novel antifungals. This study is aimed to detect the antifungal activity of silver nanoparticles (SNPs) on Fluconazole resistant dermatophytes isolated from primary school children clinically suffering from tinea capitis and attending El-Sheikh Zaid Dermatology Center in Ismailia. The study was done on 112 clinical cases. Examination with potassium hydroxide(KOH) of hair samples was done, followed by routine identification using culturing, macroscopical and microscopical examination and biochemical tests, finally molecular identification using Polymerase Chain Reaction (PCR) with (GACA) 4 was done. Fluconazole resistance of these dermatophytes was detected by different methods including agar disc diffusion method and broth microdilution susceptibility testing. Silver nanoparticles susceptibility testing was carried out on these Fluconazole resistant dermatophytes. The Ubiquitin 1 (Ub 1) gene was detected in samples which were Fluconazole resistant but SNPs susceptible. In this study dermatophytes were found only in 70 samples (62.5%). They were belonged to 3 species: Trichophyton violaceum, Microsporum gypseum and Microsporum canis. Fluconazole resistance was found in 58 samples (82.85%). Both M. canis and M. gypseum were resistant to all used concentrations of SNPs, while T. violaceum was susceptible to 50 µg/ml SNPs solution. The Ub1 gene was detected in 1 sample (4.8%). Therefore SNPs can be used for treatment of T. violaceum, while they can't be used for treatment of M. canis or M. gypseum.
Collapse
Affiliation(s)
- Mariam E Amin
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| | - Marwa M Azab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| | - Amro M Hanora
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| | - Salah Abdalla
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| |
Collapse
|
13
|
Bendary MM, Solyman SM, Azab MM, Mahmoud NF, Hanora AM. Genetic diversity of multidrug resistant Staphylococcus aureus isolated from clinical and non clinical samples in Egypt. Cell Mol Biol (Noisy-le-grand) 2016; 62:55-61. [PMID: 27609475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 08/17/2016] [Indexed: 06/06/2023]
Abstract
In recent years, the increasing incidence of diseases caused by Staphylococcus aureus (S. aureus) has been noted in the university hospitals of El-Sharkia and Assuit governorates - Egypt. Therefore, we studied the genetic relatedness of multidrug resistant S. aureus isolates from different sources in the above mentioned governorates. One hundred and fifty six S. aureus isolates were divided into 5 different groups, 1 non clinical isolates from different food products and 4 different clinical isolates of human and animal sources in the 2 different governorates. Epidemiological characteristics of 156 S. aureus isolates were determined by phenotypic methods including quantitative antibiogram typing and biofilm production. Genetic typing of 35 multidrug resistant (MDR) isolates (7 from each group) based on 16S rRNA gene sequence, virulence and antimicrobial resistance gene profiles was done. The genetic relatedness of the highest virulent strain from each group was detected based on different single locus sequence typing and multi-locus sequence typing (MLST). S. aureus strains isolated from different sources and geographical areas showed high diversity. The genetic typing revealed different sequence types and different sequences of coa and spa genes. S. aureus isolates were found highly diverse in Egypt.
Collapse
Affiliation(s)
- M M Bendary
- Suez Canal University Department of Microbiology and Immunology, College of Pharmacy Egypt
| | - S M Solyman
- Suez Canal University Department of Microbiology and Immunology, College of Pharmacy Egypt
| | - M M Azab
- Suez Canal University Department of Microbiology and Immunology, College of Pharmacy Egypt
| | - N F Mahmoud
- Suez Canal University Department of Microbiology and Immunology, College of Pharmacy Egypt
| | - A M Hanora
- Suez Canal University Department of Microbiology and Immunology, College of Pharmacy Egypt
| |
Collapse
|
14
|
Bendary MM, Solyman SM, Azab MM, Mahmoud NF, Hanora AM. Characterization of Methicillin Resistant Staphylococcus aureus isolated from human and animal samples in Egypt. Cell Mol Biol (Noisy-le-grand) 2016; 62:94-100. [PMID: 26950458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 02/26/2016] [Indexed: 06/05/2023]
Abstract
Staphylococcus aureus (S. aureus) has been one of the most problematic pathogens. Methicillin Resistant S. aureus (MRSA) has emerged as a major concern for both human and animal. Antibiotic resistance genes dissemination might be possible between human and animal bacteria. The aim of this study is to show phenotypic and genotypic diversity of human and animal MRSA isolates. Antibiogram typing and biofilm production were used as a primary phenotypic typing tool for the characterization of (40) animal and (38) human MRSA isolates. Genetic typing based on sequencing of 16S rRNA gene and virulence gene profiles were done. Antimicrobial resistance profiles of the animal isolates showed little evidence of widespread of resistance, although this was seen in many human isolates. The biofilm production was detected in higher percentage among animal isolates. Based on the genetic typing and multiple antibiotic resistance (MAR) index, the majority of animal isolates clustered into lineages that were not found in human isolates. Animal and human MRSA isolates showed diversity in antibiotic resistance and virulence gene profiles may be due to host adaptation or chances for contamination between the two hosts were not present in our study.
Collapse
MESH Headings
- Animals
- Anti-Bacterial Agents/pharmacology
- Biofilms/drug effects
- Cattle
- Cluster Analysis
- Drug Resistance, Bacterial/drug effects
- Egypt
- Female
- Genotype
- Humans
- Mastitis, Bovine/microbiology
- Mastitis, Bovine/pathology
- Methicillin-Resistant Staphylococcus aureus/classification
- Methicillin-Resistant Staphylococcus aureus/genetics
- Methicillin-Resistant Staphylococcus aureus/physiology
- Microbial Sensitivity Tests
- Phenotype
- Phylogeny
- Polymerase Chain Reaction
- RNA, Ribosomal, 16S/chemistry
- RNA, Ribosomal, 16S/genetics
- RNA, Ribosomal, 16S/metabolism
- Sequence Analysis, DNA
- Staphylococcal Infections/microbiology
- Staphylococcal Infections/pathology
- Virulence Factors/genetics
Collapse
Affiliation(s)
- M M Bendary
- Suez Canal University Department of Microbiology and Immunology, Faculty of Pharmacy Ismailia Egypt
| | - S M Solyman
- Suez Canal University Department of Microbiology and Immunology, Faculty of Pharmacy Ismailia Egypt
| | - M M Azab
- Suez Canal University Department of Microbiology and Immunology, Faculty of Pharmacy Ismailia Egypt
| | - N F Mahmoud
- Suez Canal University Department of Microbiology and Immunology, Faculty of Pharmacy Ismailia Egypt
| | - A M Hanora
- Suez Canal University Department of Microbiology and Immunology, Faculty of Pharmacy Ismailia Egypt
| |
Collapse
|
15
|
Azab MM, Darwish AA, Mahmoud HA, Sdeek FA. Residue levels of organochlorine pesticides in some ecosystem components of Manzala Lake. Environ Monit Assess 2013; 185:10257-10268. [PMID: 23884913 DOI: 10.1007/s10661-013-3330-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Accepted: 06/26/2013] [Indexed: 06/02/2023]
Abstract
To evaluate the organochlorine pesticide (OCP) contamination of Manzala Lake, its ecosystem was investigated during the winter season (December to March). The studied ecosystem components were water, sediment, aquatic weeds, and fishes in four locations. The samples were analyzed by gas chromatography with electron capture detector. Pollutant levels of total OCPs showed significantly high levels in the water areas of Round road (46.253 ng/ml), Port-Said Damietta road (19.301 ng/ml), followed by Bughas El-Rasoah (5.539 ng/ml), then Ashtoum El Gamel (natural reserve area now) (0.289 ng/ml). Organochlorines were detected in sediment only in Round road (3.359 μg/kg) and Port-Said Damietta road (0.171 μg/kg) by significant order while they were undetectable in Ashtoum El Gamel and Bughas El-Rasoah. Total OCPs in aquatic weeds ranged between 0.194 μg/kg in Port-Said Damietta and 0.026 μg/kg in Ashtoum El Gamel. While OCPs were 0.160 and 0.153 μg/kg in Round road and Bughas El-Rasoah, respectively. Concerning fish muscles OCPs were significantly higher in the Round road area (0.397 μg/kg) followed by the Port-Said Damietta road (0.258 μg/kg), and finally, Ashtoum El Gamel samples (0.126 μg/kg). The results revealed the direct relation for the accumulation of OCPs between studied ecosystem parameters at the Manzala Lake during the winter season. Results also demonstrated that fish samples collected from the Manzala Lake in the studied areas were contaminated with levels of organochlorines, not higher than the maximum permissible level recorded by FAO/WHO, and that the public is not at risk with fish consumption.
Collapse
Affiliation(s)
- M M Azab
- Plant Protection Department, Benha University, Benha, Egypt,
| | | | | | | |
Collapse
|
16
|
|