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Lemierre Syndrome Caused by Arcanobacterium haemolyticum Alone in a Healthy Man.

ABSTRACT: Arcanobacterium haemolyticum was isolated from the blood cultures of a previously healthy 37-year-old man who met all the criteria of Lemierre syndrome, including a primary oropharyngeal infection, evidence of thrombophlebitis of the internal jugular vein, and metastatic infections. To the best of our knowledge, this is the first case of Lemierre syndrome caused by A. haemolyticum in Korea and shows that A. haemolyticum alone can cause Lemierre syndrome.

SUBMITTER: Lee KJ

PROVIDER: S-EPMC3539103 | biostudies-literature | 2012 Dec

REPOSITORIES: biostudies-literature

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Lemierre Syndrome Caused by Arcanobacterium haemolyticum Alone in a Healthy Man.

Lee Kyoung Jin KJ Kim Eo Jin EJ Kang Seung Ji SJ Jang Mi Ok MO Jang Hee-Chang HC Jung Sook In SI Shin Jong Hee JH Park Kyung Hwa KH

Chonnam medical journal 20121221 3

Arcanobacterium haemolyticum was isolated from the blood cultures of a previously healthy 37-year-old man who met all the criteria of Lemierre syndrome, including a primary oropharyngeal infection, evidence of thrombophlebitis of the internal jugular vein, and metastatic infections. To the best of our knowledge, this is the first case of Lemierre syndrome caused by A. haemolyticum in Korea and shows that A. haemolyticum alone can cause Lemierre syndrome. ...[more]

PMID: 23323228

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Project description:Arcanobacterium haemolyticum, a pathogen of the human upper respiratory tract and other systems, has been reported to produce soluble toxins, including a phospholipase D (PLD). We confirmed production of PLD by this organism and cloned and sequenced pld. Arcanobacterial PLD (PLD-A) was found to be a protein of approximately 31.5 kDa with a pI of approximately 9.4. Cosmid cloning, followed by subcloning into phagemid pBluescriptIISK+, yielded Escherichia coli(pAh140), a recombinant with a gene product corresponding to PLD-A. Evidence of PLD activity was found by three assays in supernatant fluid of cultures of E. coli(pAh140) and A. haemolyticum, but not in E. coli(pBluescriptIISK+). Experiments to determine if this protein was secreted were not conducted, but previous work with PLD from Corynebacterium pseudotuberculosis suggested that the presence of the enzyme in culture supernatant fluids was due to lysis of E. coli rather than to active transport. Antibodies in polyclonal sera from goats immunized with native or recombinant PLD-A neutralized native and recombinant PLD-A activity, and antibodies against native or recombinant PLD from C. pseudotuberculosis (PLD-P) partially neutralized native and recombinant PLD-A. Antibodies prepared against recombinant PLD-A labelled both recombinant and native PLD-A in Western blots (immunoblots) and dot blots, but antibodies against PLD-P did not. Sequencing of the insert in pAh140 revealed an open reading frame of 930 bp coding for 309 amino acids, including a putative signal sequence of 26 amino acids (3.2 kDa, determined on the basis of homology with the 24-amino-acid signal sequence of pld from C. pseudotuberculosis bv. ovis) and the mature PLD protein (31.5 kDa). Sequence comparisons of coding regions revealed 65% DNA homology with pld genes from C. pseudotuberculosis and Corynebacterium ulcerans. Comparison of amino acid sequences revealed 64% homology of PLD-A both with PLD-P and with PLD produced by C. ulcerans.

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Lemierre Syndrome Caused by Arcanobacterium haemolyticum Alone in a Healthy Man.

Publications

Lemierre Syndrome Caused by Arcanobacterium haemolyticum Alone in a Healthy Man.

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