Identification of Acinetobacter clinical isolates by polymerase chain reaction analysis of 16S-23S ribosomal ribonucleic acid internal transcribed spacer.
BACKGROUND
The genus Acinetobacter is a diverse group of Gram-negative bacteria involve at least 33 species using the molecular methods. Although the genus Acinetobacter comprises a number of definite bacterial species, some of these species are of clinical importance. Therefore, it is of vital importance to use a method which is able to reliably and efficiently differentiate the numerous Acinetobacter species.


OBJECTIVE
This study aims to identify Acinetobacter of clinical isolates from Assir region to the species level by 16S-23S intergenic spacers internal transcribed spacer (ITS) of ribosomal ribonucleic acid (rRNA).


METHODS
Deoxyribonucleic acid extraction, polymerase chain reaction amplification of 16S-23S intergenic spacer sequences (ITS) was performed using the bacterium-specific universal primers.


RESULTS
Based on the 16S-23S intergenic spacers (ITS) of rRNA sequences, all isolates tested were identified as Acinetobacter baumannii. The isolates shared a common ancestral lineage with the prototypes A. baumannii U60279 and U60280 with 99% sequence similarities.


CONCLUSIONS
These findings confirmed 16S-23S rRNA ITS for the identification of A. baumannii of different genotypes among patients.
Department of Biology, College of Science, King Khalid University, Abha 61413, Kingdom of Saudi Arabia, .
M A A
MA
Sarhan
A A
AA
Osman
W O
WO
Haimour
M N
MN
Mohamed
T H
TH
Taha
N M
NM
Abdalla
D000150:Acinetobacter / Q000145:classification / Q000235:genetics*; D015373:Bacterial Typing Techniques / Q000379:methods*; D021903:DNA, Ribosomal Spacer / Q000235:genetics*; D010802:Phylogeny; D016133:Polymerase Chain Reaction; D012336:RNA, Ribosomal, 16S / Q000235:genetics*; D012338:RNA, Ribosomal, 23S / Q000235:genetics*
D021903:DNA, Ribosomal Spacer; D012336:RNA, Ribosomal, 16S; D012338:RNA, Ribosomal, 23S