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Infection and Immunity, August 2002, p. 4701-4704, Vol. 70, No. 8
0019-9567/02/$04.00+0     DOI: 10.1128/IAI.70.8.4701-4704.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

The omp-1 Major Outer Membrane Multigene Family of Ehrlichia chaffeensis Is Differentially Expressed in Canine and Tick Hosts

Ahmet Unver,1,{dagger} Yasuko Rikihisa,1* Roger W. Stich,2 Norio Ohashi,1 and Suleyman Felek1

Department of Veterinary Biosciences,1 Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio 43210-10932

Received 28 January 2002/ Returned for modification 15 March 2002/ Accepted 23 April 2002

Sixteen of 22 omp-1 paralogs encoding 28-kDa-range immunodominant outer membrane proteins of Ehrlichia chaffeensis were transcribed in blood monocytes of dogs throughout a 56-day infection period. Only one paralog was transcribed by E. chaffeensis in three developmental stages of Amblyomma americanum ticks before or after E. chaffeensis transmission to naïve dogs.

* Corresponding author. Mailing address: Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, 1925 Coffey Rd., Columbus, OH 43210-1093. Phone: (614) 292-9677. Fax: (614) 292-6473. E-mail: rikihisa.1{at}osu.edu.

Editor: J. T. Barbieri

{dagger} Present address: Department of Microbiology, Faculty of Veterinary Medicine, Kafkas University, Kars, Turkey.

Infection and Immunity, August 2002, p. 4701-4704, Vol. 70, No. 8
0019-9567/02/$04.00+0     DOI: 10.1128/IAI.70.8.4701-4704.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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