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Biofilms-Associated Infections
Published in Bakrudeen Ali Ahmed Abdul, Microbial Biofilms, 2020
Nor Fadhilah Kamaruzzaman, Tan Li Peng, Ruhil Hayati Hamdan
Most gastroenteritis cases (>85%) are attributed to Aeromonas hydrophila (Daskalov 2017). Aeromonas sp. are Gram-negative and rod shaped. They are motile aquatic bacteria considered important pathogens in reptiles, amphibians, and fish. They are known to be a major problem in fish farming. Fish are thought to act as a reservoir of Aeromonas hydrophila possibly leading to infection in mammals (Percival and Garcı 2011). In humans, Aeromonas sp. are known to cause gastroenteritis (from mild to cholera-like symptoms) and other infections such as endocarditis, septicemia, hemolytic uremic syndrome, peritonitis, respiratory infections, myonecrosis, osteomyelitis, ocular infections, and meningitis. Aeromonas hydrophila has been reported to grow well in biofilms detected in drinking water systems (State et al. 2015).
Attributes of Tropical Pond-Cultured Fish
Published in Hillary S. Egna, Claude E. Boyd, Dynamics of POND Aquaculture, 2017
David R. Teichert-Coddington, Thomas J. Popma, Leonard L. Lovshin
No viral disease other than Lymphocystis has been reported for tilapia. Under high temperature and ammonia stress, myxobacterial infections, especially Columnaris, may be problematic. Myxobacterial gill infections may also cause heavy losses among fry, especially at low temperatures. The most common bacterial diseases are hemorrhagic septicemias, especially from Aeromonas hydrophila and, under hyperintensive culture, Edwardsiella tarda.
Nanoformulation approach for improved stability and efficiency of lactoperoxidase
Published in Preparative Biochemistry & Biotechnology, 2021
Numerous studies have shown that the enhancement of LPS may inhibit various psychrotrophic microbes, such as numerous Micrococcus strains, Pseudomonas, and Bacillus genera.[51–53] Consequently, this prevents and protects food from spoilage for some days if compared to what can be attained with refrigeration condition alone.[37] Mixtures of LPO with some bacterial strains such as Lactobacillus reuteri produced a potential antimicrobial multi-ingredient that showed a strong bactericidal efficiency against numerous Gram-negative bacteria that present in milk products including Escherichia coli O157:H7, Campylobacter jejuni, Aeromonas hydrophila, Yersinia enterocolitica and Salmonella enterica,.[54] The LPS attended not only as a strong biocidal ingredient toward a broad spectrum of bacteria but also can exert a crucial fungicidal activity against pathogenic molds and yeasts such as Candida albicans.[55]
REVIEW: Synthesis, Medical And Photocatalyst Applications Of Nano-Ag2O
Published in Journal of Coordination Chemistry, 2020
Susan Torabi, Mohammad Javad Khoshnood Mansoorkhani, Ali Majedi, Somayeh Motevalli
Shaffiey et al. studied the antibacterial activity of silver oxide nanoparticles against gram-negative bacteria Aeromonas hydrophila [68]. They believed that Ag2O NPs penetrate into bacteria interacting with DNA and then DNA loses its replication ability [69]. Another reason for bacterial cell death after the exposure to Ag2O NPs may be the release of silver ions from the nanoparticles. By releasing atomic Ag° and ionic Ag+ and producing radicals such as hydrogen peroxide, silver oxide nanoparticles kill cells [70, 71]. The antimicrobial investigation suggests that synthesized Ag2O NPs exhibited moderate activity toward Aeromonas hydrophila. Ag2O NPs synthesized at 400 °C demonstrated the maximum zone of inhibition in the case of Aeromonas hydrophila [68].
REVIEW: Biomedical applications of Schiff base metal complexes
Published in Journal of Coordination Chemistry, 2020
Mohammad Nasir Uddin, Sayeda Samina Ahmed, S. M. Rahatul Alam
In vitro antibacterial and antifungal activities were studied against Bacillus megaterium and Candida tropicalis for Cd(II) and Cu(II) complexes of Schiff bases, 4-[(4-bromo-phenylimino)-methyl]-benzene-1,2,3-triol, 4-[(3,5-di-tert-butyl-4-hydroxy-phenylimino)-methyl] -benzene-1,2,3-triol, 3-(p-tolyl imino-methyl)-benzene-1,2-diol, 3-[(4-bromo-phenylimino)-methyl]-benzene-1,2-diol and 4-[(3,5-di-tert-butyl-4-hydroxy-phenylimino)-methyl]-benzene-1,3-diol when ligands and their Cu(II), Cd(II) complexes were highly active against the tested bacteria [69]. Schiff bases of bis(ethan-1-yl-1-ylidene))bis(azan-1-yl-1-ylidene) bis(1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one) and (E)-1,5-dimethyl-2-phenyl-4-(1-(pyridin-2-yl)ethylideneamino)-1Hpyrazol-3(2H)-one derived from 2,6-diacetyl pyridine and 2-pyridine carboxaldehyde with 4-amino-2,3-dimethyl-1-phenyl-3-pyrozolin-5-one[4,4′-(1E,10E)-(1,1′-(pyridine-2,6-diyl) and their Co(II), Cu(II), Ni(II), Mn(II) and Cr(III) complexes exhibited antibacterial and antifungal activities against E. coli, Staphylococcus aureus, Klebsiella pneumoniae, Mycobacterium smegmatis, P. aeruginosa, Enterobacter cloacae and Micrococcus leteus [70]. Zn(II) complex of Schiff base 4-chloro-2-(2-morphiolinoethylimino)methyl phenolato methanolchloro was reported to possess antibacterial activity against Bacillus subtilis, S. aureus, E. coli and Pseudomonas fluorescence [71]. It was reported that Cu(II), Co(II) and Mn(II) complexes have higher antibacterial activity than the free salicylidene ligands toward gram + ve and gram -ve bacteria [72]. Complexes containing nitro group showed better activity than complexes with halogen [73]. Schiff base 3-[4′(4′´-chloro phenyl)-6′-(4′´´-methylphenyl)pyrimidin-2′-yl]iminoisatin obtained from substituted Isatin and 4-(4′-chlorophenyl)-6-(4′´-methylphenyl)-2-aminopyrimidine were more active when tested for in vitro antibacterial activity against Salmonella typhimurium, S. aureus, Enterococcus faecalis, P. aeruginosa, K. pneumoniae, Staphylococcus albus, Aeromonas hydrophila, Vibrio cholera-01, B. subtilis and Providencia rettgeri [74].