Possibility of transmission the character of antibiotics resistance and heavy metals by conjugation genetic process in klebsiella pneumonia

	Possibility of transmission the character of antibiotics resistance and heavy metals by conjugation genetic process in klebsiella pneumonia
Diyala Journal For Pure Science
Article 1, Volume 10, Issue 3, 2014, Pages 77-94
Abstract
The total 22 isolate of K. pneumoniae which isolated from different infected cases has been active through their growth on the Brain Heart Infusion Broth Media, and then the processes of detection for bacterial producing to the Beta lactamase was done. 19 isolate (86.4%) showed ability to produce β-Lactamase enzyme , also have the ability to produce the Extendended spectrum β-Lactamase enzyme by using Disc Approximation , where was 9 isolates (40.9%), testing has been its ability to produce enzymes Metalloβ-Lactamase and using the Imp-EDTA combination disc as managed 12 isolates (54.5%) production of the enzyme. All isolates showed pattern of multiple drug resistance towards 16 anti biotics , as were all isolates (100%) were resistance to antibiotics Ampicillin , Carbencillin , and Pipracillin, while most of the isolates were sensitive to Imipenem and chloramphenicol, and varied resistance ratio for the rest of antibiotics. Detection tolerate of bacteria to different concentrations of heavy metals and that their growing them on media containing different concentrations (3, 1.5, 0.03, 0.03 and 1.5) mmol. of metals (copper, cobalt, mercury, silver, and zinc) respectively where the highest concentration tolerance the bacteria to copper(3) mmol. , and the lowest concentration tolerance to metallic mercury and silver (0.01) In the current study was conducted the bacterial conjugation for a group of bacterial isolates that have shown high resistance to antibiotics and heavy metals as well as the production of enzymes β-Lactamase with the standard strain E.coliMM294, and the Isolates were unable to achieve the conjugation in the liquid media or solid agar by Seldeen method, while 18 isolates which contain plasmids were able to achieve conjugation (100%) on solid agar by Miller method where depended on heavy growth and direct contact between the donor and recipient strains . The current study found by investigation the plasmid profile for conjugated cells that the most of the plasmids had transferred from donor strain which represent by the isolates under study to standard strain , where 15 trans conjugated isolates (83.3%) from 18 isolate can produce β-Lactamase enzyme , while 9 trans conjugated isolate (50%) can produce extended spectrum β-Lactamase enzyme , and 10 trans conjugated isolate 55.6)%) can produce Metallo β-Lactamase enzyme , in addition to the multi drug resistance and the heavy metal tolerance were transferred to the trans conjugated cells , a condition implying that they are plasmid mediated.
Keywords
Klebsiella pneumoniae; Lactamase; Metallo; conjugation

Statistics Article View: 63 PDF Download: 27