Roger William Stich
Associate Professor stichrw@missouri.edu

Research emphasis: Biology of ixodid ticks and tick-borne pathogens. This program is centered on understanding the mechanisms responsible for transmission and pathogenesis of tick-borne members of the bacterial order Rickettsiales, especially the family Anaplasmataceae. Members of this family include important pathogens of livestock, companion animals and human beings. Current projects involve Ehrlichia chaffeensis, E. canis and Anaplasma marginale. Other interests include human and veterinary public health issues in Thailand.


Teaching: Parasitology

Selected publications:
McClure JC, Crothers ML, Schaefer JJ, Stanley PD, Stich RW. Rapid screening and cultivation of Ehrlichia canis from refrigerated carrier blood. Clin Microbiol Infect. 2009; In press.

Schaefer JJ, Kahn J, Needham GR, Rikihisa Y, Ewing SA, Stich RW. Antibiotic clearance of Ehrlichia canis from dogs infected by intravenous inoculation of carrier blood. Ann NY Acad Sci. 2008; 1149:263-9.

Jittapalapong S, a Phichitrasilp T, Chanphao H, Rerkamnuychoke W, Stich RW. Immunization with tick salivary gland extracts: impact on salivary gland ultrastructure in Rhipicephalus (Boophilus) microplus collected from immunized, naturally infested cattle. Ann NY Acad Sci. 2008; 1149:200-4.

delos Santos JRC, Oglesbee M, Rikihisa Y, Stich RW. Pathological evidence of ehrlichiosis among calves inoculated with Ehrlichia chaffeensis. Ann NY Acad Sci. 2008; 1149:103-6.

Kaewhom P, Stich RW, Needham GR, Jittapalapong S. Molecular analysis of calreticulin expressed in salivary glands of Rhipicephalus (Boophilus) microplus indigenous to Thailand. Ann NY Acad Sci. 2008; 1149:53-7.

Jittapalapong S, Thanasilp S, Kengradomkit C, Sirinarukmit T, Kaewmongkol G, Stich RW. Molecular cloning, sequence analysis and immune recognition of Bm95 from Thai strains of Rhipicephalus (Boophilus) microplus. Ann NY Acad Sci. 2008; 1149:45-8.

Stich RW, Schaefer JJ, Bremer WG, Needham GR, Jittapalapong S. Host surveys, ixodid tick biology and transmission scenarios as related to the tick-borne pathogen, Ehrlichia canis. Vet Parasitol. 2008; 158:256-73.

Jittapalapong S, Inpankaew T, Sarataphan N, Herbreteau V, Hugot JP, Morand S, Stich RW. Molecular detection of both salivarian and stercorcarian trypanosomes among various rodents of Thailand. Infect Genet Evol. 2008; 8:445-9.

Pinyoowong D, Jittapalapong S, Suksawat F, Stich RW, Thamchaipeneta A. Molecular characterization of Thai Ehrlichia canis and Anaplasma platys strains detected in dogs. Infect Genet Evol. 2008; 8: 433-8.

delos Santos JRC, Boughan K, Bremer WG, Rizzo B, Schaefer JJ, Rikihisa Y, Needham GR, Capitini LA, Anderson DE, Oglesbee M, Ewing SA, Stich RW. Experimental infection of dairy calves with Ehrlichia chaffeensis. J Med Microbiol 2007;56:1660-8.

Schaefer J, Needham GR, Bremer WG, Rikihisa Y, Ewing SA, Stich RW. Tick acquisition of Ehrlichia canis from dogs treated with Doxycycline Hyclate. Antimicrob Agents Chemother 2007;51:3394-6.

Sarataphan N, Vongpakorn M, Nuansrichay B, Autarkool N, Keowkarnkah T, Rodtian P, Stich RW, Jittapalapong S. Diagnosis of a Trypanosoma lewisi-like infection in a sick infant from Thailand. J Med Microbiol 2007;56:1118-21.

Labruna MB, McBride JW, Camargo LM, Aguiar DM, Yabsley MJ, Davidson WR, Stromdahl EY, Williamson PC, Stich RW, Long SW, Camargo EP, Walker DH. A preliminary investigation of Ehrlichia species in ticks, humans, dogs, and capybaras from Brazil. Vet Parasitol 2007;143:189-95.

Jittapalapong S, Rungphisutthipongse O, Maruyama S, Schaefer JJ, Stich RW. Detection of Hepatozoon in stray dogs and cats in Bangkok, Thailand. Ann NY Acad Sci 2006;1081:479-88.

Jittapalapong S, Pinyopanuwat N, Chimnoi W, Nimsupun B, Siripanth C, Stich RW. Prevalence of Cryptosporidium among dairy cows in Thailand. Ann NY Acad Sci 2006;1081:328-35.

Bremer WG, Schaefer JJ, Wagner ER, Ewing SA, Rikihisa Y, Needham GR, Jittapalapong S, Moore DL, Stich RW. Transstadial and intrastadial experimental transmission of Ehrlichia canis by male Rhipicephalus sanguineus. Vet Parasitol 2005;131:95-105.

Stich RW, Olah GA, Brayton KA, Brown WC, Fecheimer M, Green-Church K, Jittapalapong S, Kocan KM, McGuire TC, Rurangirwa FR, Palmer GH. Identification of a novel Anaplasma marginale appendage-associated protein that localizes with actin filaments during intraerythrocytic infection. Infect Immun 2004;72:7257-64.

Jittapalapong S, Jansawan W, Barriga OO, Stich RW. Reduced incidence of Babesia bigemina infection in cattle immunized against the cattle tick, Boophilus microplus. Ann NY Acad Sci 2004;1026:312-18.

Jittapalapong S, Jansawan W, Gingkaew A, Barriga OO, Stich RW. Protection of dairy cows immu-nized with tick tissues against natural Boophilus microplus infestations in Thailand. Ann NY Acad Sci 2004;1026:289-97.

Wagner ER, Bremer WG, Rikihisa Y, Ewing SA, Needham GR, Unver A, Wang X, Stich RW. Development of a p28-based PCR assay for Ehrlichia chaffeensis. Mol Cell Probes 2004;18:111-16.

Stich RW, Byrum B, Love B, Theus N, Barber L, Shulaw WP. Evaluation of an automated system for non-radiometric detection of Mycobacterium avium paratuberculosis in bovine feces. J Microbiol Methods 2004;56:267-75.