Results 81 to 90 of about 262 (135)
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Protection against Cryptobia (Trypanoplasma) salmositica and Salmonid Cryptobiosis
Parasitology Today, 1998Cryptobia (Trypanoplasma) salmositica is a haemoflagellate that causes morbidity and mortality in salmon, Oncorhynchus spp, on the Pacific coast of North America. In this review, Patrick Woo briefly describes the pathogen, its transmissions (either indirectly via its leech vector, Piscicola salmositica, or directly between fish) and the clinical signs ...
P T K Woo, Patrick T K Woo
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Proteases in pathogenic and nonpathogenic haemoflagellates, Cryptobia spp. (Sarcomastigophora:Kinetoplastida), of fishes [PDF]
Diseases of Aquatic Organisms, 1997 Ptk Woo
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The Journal of Parasitology, 1992
Cryptobia salmositica (pathogenic and vaccine strains), Cryptobia bullocki (pathogenic), and Cryptobia catostomi (nonpathogenic) have similar oxygen consumption rates (0.17 +/- 0.01 nm O2/10(6) parasites). Incubation with sodium azide (5 microliters of a 1-M solution to 1 ml of parasite suspension, i.e., a 5-mM final concentration) reduced the oxygen ...
P T, Thomas, J S, Ballantyne, P T, Woo
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Cryptobia salmositica (pathogenic and vaccine strains), Cryptobia bullocki (pathogenic), and Cryptobia catostomi (nonpathogenic) have similar oxygen consumption rates (0.17 +/- 0.01 nm O2/10(6) parasites). Incubation with sodium azide (5 microliters of a 1-M solution to 1 ml of parasite suspension, i.e., a 5-mM final concentration) reduced the oxygen ...
P T, Thomas, J S, Ballantyne, P T, Woo
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Cryptobia iubilans Infections in Discus Fish in Trinidad and Tobago
Journal of Parasitology, 2020Discus (Symphysodon spp.) are costly and prized specimens in the international ornamental fish trade. The majority of discus submitted to the Aquatic Animal Health Unit at the University of the West Indies School of Veterinary Medicine for necropsy between September 2010 and September 2015 had lesions consistent with Cryptobia iubilans infection, thus ...
Ayanna Carla N, Phillips Savage +6 more
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Molecular and Biochemical Parasitology, 1999
Phylogenetic relationships within the kinetoplastid flagellates were inferred from comparisons of small-subunit ribosomal RNA gene sequences. These included three new gene sequences from Cryptobia bullocki, (2091 bp), Cryptobia catostomi (2090 bp), and Cryptobia salmositica (2091 bp).
A D, Wright +4 more
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Phylogenetic relationships within the kinetoplastid flagellates were inferred from comparisons of small-subunit ribosomal RNA gene sequences. These included three new gene sequences from Cryptobia bullocki, (2091 bp), Cryptobia catostomi (2090 bp), and Cryptobia salmositica (2091 bp).
A D, Wright +4 more
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Use of a live vaccine to modulate Cryptobia salmositica infections in Salmo salar [PDF]
Diseases of Aquatic Organisms, 2007 The vaccine strain of Cryptobia salmositica multiplies in Atlantic salmon Salmo salar and it can modulate the severity of the disease in Cryptobia-infected individuals. Fish injected with the vaccine 3 d post-infection with C. salmositica had lower peak parasitaemias and higher antibody titres than infected fish given the vaccine 7 d post-infection or ...
Erika Crispo +2 more
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Glucocorticoid receptors on and in a unicellular organism, Cryptobia salmositica
International Journal for Parasitology, 2014This is the first report to our knowledge that demonstrates a functional steroid hormone receptor in a protozoon. The study used Cryptobia salmositica, a pathogenic haemoflagellate found in salmonid fishes. It has been previously shown that cortisol and dexamethasone (a synthetic glucocorticoid) enhanced the multiplication of C.
Mao, Li, Patrick T K, Woo
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Parasitology Research, 1996
Fresh plasma from Cryptobia-resistant brook charr (Salvelinus fontinalis) lysed Cryptobia salmositica under in vitro conditions. However, the parasite was not lysed if the plasma was heat-inactivated at 37 degrees C for 2 h or after the addition of ethylenediaminetetraacetic acid (EDTA) to chelate the free Mg2+ ions.
G M, Forward, P T, Woo
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Fresh plasma from Cryptobia-resistant brook charr (Salvelinus fontinalis) lysed Cryptobia salmositica under in vitro conditions. However, the parasite was not lysed if the plasma was heat-inactivated at 37 degrees C for 2 h or after the addition of ethylenediaminetetraacetic acid (EDTA) to chelate the free Mg2+ ions.
G M, Forward, P T, Woo
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Relations between histopathology and parasitaemias in Oncorhynchus mykiss infected with Cryptobia salmositica, a pathogenic haemoflagellate [PDF]
Diseases of Aquatic Organisms, 2001 One group (n = 50) of juvenile rainbow trout Oncorhynchus mykiss was inoculated intraperitoneally with 2000 (low dose [LD]) and another group (n = 50) with 20,000 (high dose [HD]) Cryptobia salmositica fish(-1). The histopathology was a generalised inflammatory reaction, and lesions were in connective tissues and in the reticulo-endothelial system.
Ptk Woo, Patrick T K Woo
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A metalloproteinase gene from the pathogenic piscine hemoflagellate, Cryptobia salmositica
Parasitology Research, 2006We report the identification of a Cryptobia genomic DNA gene predicted to encode a hydrophobic protein containing a zinc metalloproteinase motif, HEXXH, and hence named it a major surface proteinase 1-like (MSP-1). The MSP-1 gene was identified using universal genome walking. Southern blot analysis revealed it to be a multicopy gene.
Palmy R, Jesudhasan +2 more
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