Neorickettsia helminthoeca (NH), the agent of salmon poisoning disease or canine neorickettiosis (CN), is a bacterial endosymbiont of the trematode Nanophyetus salmincola, and infections are spreading among specific fish-eating mammalians. This article describes the pathologic and...
Author(s)
Headley, S. A.; Viana, N. E.; Michelazzo, M. de M. Z.; Xavier, A. A. C.; Costa, C. J. S.; Pinho, F. H. O. de; Santos, M. D. dos
Publisher
Wiley, Berlin, Germany
Citation
Transboundary and Emerging Diseases, 2020, 67, s2, pp 49-59
Neorickettsia helminthoeca, a type species of the genus Neorickettsia, is an endosymbiont of digenetic trematodes of veterinary importance. Upon ingestion of salmonid fish parasitized with infected trematodes, canids develop salmon poisoning disease (SPD), an acute febrile illness that is...
Author(s)
Lin MingQun; Bachman, K.; Cheng ZhiHui; Daugherty, S. C.; Sushma Nagaraj; Sengamalay, N.; Ott, S.; Godinez, A.; Tallon, L. J.; Sadzewicz, L.; Fraser, C.; Hotopp, J. C. D.; Rikihisa, Y.
Publisher
Wiley, Oxford, UK
Citation
Microbial Biotechnology, 2017, 10, 4, pp 933-957
The genus Neorickettsia includes obligate, intracellular bacteria responsible for diseases including Potomac horse fever caused by Neorickettsia risticii and salmon poisoning disease (SPD) caused by Neorickettsia helminthoeca. The Stellanchasmus falcatus (SF) agent is a member of this genus...
Author(s)
Pastenkos, G.; Snekvik, K.; Bradway, D.; Cerchiaro, I.; Krytenberg, D.; Mehain, S.; Eckstrand, C.
Publisher
Sage Publications, Thousand Oaks, USA
Citation
Veterinary Pathology, 2020, 57, 2, pp 286-289
The pathologic, molecular, and immunohistochemical findings associated with Neorickettsia helminthoeca are described in coatis (Nasua nasua). Tissue sections (small intestine, lungs, kidney, liver, and spleen) of coatis (n=3) that died at the Bela Vista Biological Refuge, Foz do Iguaçu, Paraná,...
Author(s)
Headley, S. A.; Oliveira, T. E. S. de; Michelazzo, M. de M. Z.; Fritzen, J. T. T.; Cubas, Z. S.; Moraes, W. de; Alfieri, A. A.; Vidotto, O.
Publisher
American Association of Zoo Veterinarians, Pomona, USA
Citation
Journal of Zoo and Wildlife Medicine, 2018, 49, 3, pp 535-541
The trematode Nanophyetus salmincola is known as the carrier of Neorickettsia helminthoeca, an obligate intracellular endosymbiotic bacterium that causes salmon poisoning disease (SPD), a fatal disease of dogs. The bacteria are maintained through the complex life cycle of N. salmincola that...
Author(s)
Greiman, S. E.; Kent, M. L.; Betts, J.; Cochell, D.; Sigler, T.; Tkach, V. V.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2016, 229, pp 107-109
Between 2001 and 2005, twenty dogs (5 mongrels and 15 beagles) showed pathologic lesions consistent with salmon poisoning disease (SPD). All beagles were born in coastal Florianopolis, Santa Catarina, Brazil and later transferred to Maringá, Parana, Brazil for the last 3-4 years of life. Lymph...
Author(s)
Headley, S. A.; Scorpio, D. G.; Barat, N. C.; Vidotto, O.; Dumler, J. S.
Publisher
National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, USA
Citation
Emerging Infectious Diseases, 2006, 12, 8, pp 1303-1305
Neorickettsia helminthoeca is an obligate intra-cytoplasmic bacterium that causes salmon poisoning disease (SPD), an acute, febrile, fatal disease of dogs. The complex life-cycle of this pathogen involves stages in an intestinal fluke (Nanophyetus salmincola), a river snail (Oxytrema silicula), in...
Author(s)
Headley, S. A.; Scorpio, D. G.; Vidotto, O.; Dumler, J. S.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Journal, 2011, 187, 2, pp 165-173
Background: Salmon poisoning disease (SPD) is a trematode-borne disease of dogs caused by Neorickettsia helminthoeca. Objectives: To determine risk factors and spatial epidemiology of SPD in dogs from northern California; to describe the clinicopathologic, microbiologic, and imaging findings of SPD ...
Author(s)
Sykes, J. E.; Marks, S. L.; Mapes, S.; Schultz, R. M.; Pollard, R. E.; Tokarz, D.; Pesavento, P. P.; Lindsay, L. A.; Foley, J. E.
Publisher
Blackwell Publishing Ltd, Oxford, UK
Citation
Journal of Veterinary Internal Medicine, 2010, 24, 3, pp 504-513
This article describes relevant cytological, histopathological and immunohistochemical findings associated with N. helminthoeca infection in five dogs from Brazil. Gross lesions were restricted to the lymph nodes and the intestines. All dogs demonstrated hypertrophy of mesenteric and peripheral...
Author(s)
Headley, S. A.; Kano, F. S.; Scorpio, D. G.; Tamekuni, K.; Barat, N. C.; Bracarense, A. P. F. R. L.; Vidotto, O.; Dumler, J. S.
Publisher
Blackwell Publishing, Oxford, UK
Citation
Clinical Microbiology and Infection, 2009, 15, s2, pp 21-23
Experimental evidence is presented supporting the development of a system for the isolation and propagation of a Neorickettsia sp. in a continuous canine macrophage cell line (DH82). To isolate a Neorickettsia sp. pathogenic to the canine species, 3 naive dogs were fed metacercaria-encysted kidneys ...
Author(s)
Rikihisa, Y.; Stills, H.; Zimmerman, G.
Citation
Journal of Clinical Microbiology, 1991, 29, 9, pp 1928-1933