This study included the collection of 204 clinical and non-clinical samples from Ibn-Al-Baladi childbirth Hospital, Al-Yarmouk Teaching Hospital and Imam Ali Hospital in Baghdad, from both genders of different ages. The collected samples were distributed according to the collection source (urine, wounds, burns, feces, Tigris River water in Baghdad and soil samples). A total of isolates of Escherichia coli (48.43 %), 15 isolates Klebsiella pneumoniae (23.43 %), 10 isolates of Enterobacter cloacae (15.62 %) and 8 isolates of proteus mirabilis (12.50 %) were isolated and identified based on microscopic culture, conventional methods, VITEK 2 and molecular identification of 16 SrRNA gene. Our investigations indicated that Escherichia coli and Klebsiella pneumoniae species represent the most frequent isolates, whereas both Enterobacter cloacae and Proteus mirabilis were the less frequent species. The results of the analysis of the sequencing of selected 21 isolates were deposited in the National Center for Biotechnology Information (NCBI) belong to the four species (From
The present study involved collection of 30 Al-Ramady General Hospital sewage, five samples for each 15 days from the treatment unit for the period October 2014 to February 2015 in triplicates. Six bacterial isolates were identified: Aeromonashydrophila, Aeromonassobria, Escherichia coli, Klebsiella pneumonae, Staphlyococcushominis and Staphylococcus aureus. All these isolates were tested for their ability to remove lead from its aqueous solutions. Significant differences (P< 0.05) were found among bioremoval capacity which were as follows 11.
This study includes collection of 438 clinical samples from Ramadi Educational Hospital and 50 of soil samples in period from Nov. 2014 to Feb. 2015, to isolate Pseudomonas aeruginosa and the resulted isolates were divided into 40 clinical isolates form burns, wounds , urine and ear inflammation, and 10 from soil.Antiobiotic sensitivity test were done against 12 antibiotic discs for all 50 selected isolates by disc diffusion method, and the results indicated that all clinical isolates were resistance to three types of antibiotics(Penicillin, Ampicillin, Amoxicilline) while they varied in their resistance to other antibiotics. The soil isolates were 100% sensitive to all antibiotics except for penicillin and ampicillin were resistance with 60%and 70% respectively.Also the molecular variation for these isolates for virulence factors were detected and the characterization of bacteria was confirmed by checking 16SrRNA gene, after the specific primers were designed for each gene of virulence which included pvdE, toxA, and phzM also specific primer for 16SrRNA was designed. The results showed that the characterization of bacteria was confirmed by 16SrRNA gene detection and sequence and the isolates contain the virulence genes had some polymorphism in comparison with those in NCBI.
The effect of metabolic status on lead bioremoval byKlebsiella pneumoniae were tested. The results revealed a significant differences (P<0.05) between live and dead (killed by heat) cellsas the bioremoval reached 57.0 ± 3.4 and 21.6 ± 2.5, respectively. Bioremoved lead ions were recovered (P<0.05) using three different washing solutions, 0.1M EDTA was the most efficient since it recovered about 63.9 ± 5.6 mg/ml, while Na2CO3 was able to recover 35.9 ± 2.6 mg/ml; whereas 0.1M HCl recovered 21.8 ± 2.6 mg/ml. genomic DNA was extracted from different isolates of K. pneumoniae in order to study the relationship between genotype using BOX-PCR and bioremoval of lead. Three clusters were detected C1, C2, and C3 with similarity percentages reached 52, 60, and 100%. What's more, bioremoval did not depend on particular genotype
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