Publications by authors named "Vandan Nagar"

Background: The emergence of antibiotic-resistant strains presents a global health and aquaculture challenge. Bacteriophages offer promise as an alternative to antibiotics for treating drug-resistant infections.

Methods: Two new phages, P2 and vB_AhydM-H1, targeting pathogenic were isolated from sewage water.

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Background: This study investigated the time-dependent bactericidal effects of cold atmospheric argon plasma treatment of periodontal hand scalers as well as the scanning electron microscopic view of the scaler tip surfaces before and after plasma treatment.

Materials And Methods: The study used 34 periodontal hand scalers which were divided into test and control groups. The scaler tips were inoculated with and bacteria, following which the scalers in the control and test groups were subjected to conventional sterilization and argon plasma sterilization, respectively.

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Alkaline phosphatases (APs), represented by E. coli AP (ECAP), employ an arginine residue to stabilize the phosphoryl group in the active site; whereas, AP from Sphingomonas (SPAP) shows a unique combination of substrate-binding residues; Thr89, Asn110, Lys171, and Arg173. Although such combination has been observed only in SPAP, these residues are present separately in different members of the AP superfamily.

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In the present study, genome characteristics and codon usage patterns of 44 Aeromonas hydrophila phages were studied. Phage genomes varied from 30.8 to 262.

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Bacterial contaminated water causes potential health issues. Conventional chlorine treatment has shortcomings of environmental hazards and chlorine adoptability by the bacterial cells. Ultrafiltration membrane can intercept bacterial species from feed water.

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Aeromonas hydrophila has emerged as an important human pathogen as it causes gastroenteritis and extra-intestinal infections. Information regarding the influence of environmental stresses on gene expression profile of A. hydrophila is lacking.

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Background: Aeromonads make up a group of Gram-negative bacteria that includes human and fish pathogens. The Aeromonas salmonicida species has the peculiarity of including five known subspecies. However, few studies of the genomes of A.

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Three members of peptidase family M20D from Burkholderia cepacia (BcepM20D; Uniprot accession no. A0A0F7GQ23), Deinococcus radiodurans R1 (DradM20D; Uniprot accession no. Q9RTP6) and Staphylococcus aureus (HmrA; Uniprot accession no.

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Aeromonas are regarded as opportunistic as well as primary pathogens of humans and fish, and are associated with gastroenteritis and septicemia in humans. Production of N-acyl-homoserine lactone (AHL) signal molecules and biofilm was determined in 22 Aeromonas isolates, from different food products in India, using thin-layer chromatography (TLC) analysis and microtiter-plate assay, respectively. Overall, highly heterogeneous patterns of AHL production were observed, with the production of N-butanoyl homoserine lactone (C4-HSL) and N-hexanoyl homoserine lactone (C6-HSL) by the majority (81.

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Aeromonas are responsible for causing gastroenteritis and extra-intestinal infections in humans. Twenty-two Aeromonas strains isolated from different food sources were re-identified up to species level using rpoD gene sequence analysis. Biochemical tests and 16S rRNA gene sequencing were insufficient to identify Aeromonas till species level.

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A total of 154 food samples (chicken, fish, and ready-to-eat sprouts) from various retail outlets in Mumbai, India, were analyzed for the presence of Aeromonas spp. over a period of 2 y (January 2006 to March 2008). Twenty-two Aeromonas isolates belonging to 7 different species were isolated from 18 (11.

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