M E Olson
Affiliation: University of Calgary
- Update on Cryptosporidium and Giardia infections in cattleMerle E Olson
Department of Microbiology and Infectious Diseases, University of Calgary, 3900 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
Trends Parasitol 20:185-91. 2004
- Comparison of in vitro disc diffusion and time kill-kinetic assays for the evaluation of antimicrobial wound dressing efficacyCorrie L Gallant-Behm
Department of Microbiology and Infectious Diseases, University of Calgary, Calgary, Alberta, Canada
Wound Repair Regen 13:412-21. 2005..We therefore conclude that zone of inhibition data generated for silver-containing dressings is of little value when assessing antimicrobial efficacy and that time-kill assays are of greater use...
- Giardiasis and cryptosporidiosis in ruminantsRyan M O'Handley
Environmental Biotechnology Cooperative Research Centre, School of Veterinary and Biomedical Sciences, Murdoch University, South Street, Murdoch, Western Australia 6164, Australia
Vet Clin North Am Food Anim Pract 22:623-43. 2006..andersoni, is an emerging disease of cattle that may affect both beef and dairy herds. This article reviews the life cycles, production impacts, treatments, controls, and zoonotic potentials of these important ruminant parasites...
- The effect of stanozolol on 15nitrogen retention in the dogM E Olson
Animal Health Unit and Gastrointestinal Sciences, University of Calgary, Alberta
Can J Vet Res 64:246-8. 2000..Stanozolol increases amino acid nitrogen retention in dogs, as has been previously observed in rats. This action of stanozolol may be beneficial in dogs under stress of surgical trauma and chronic disease...
- Giardia vaccinationM E Olson
Departments of Microbiology and Infectious Diseases and Biological Sciences, University of Calgary, Alberta, Canada
Parasitol Today 16:213-7. 2000..Here, Merle Olson, Howard Ceri and Douglas Morck describe studies that led to the development of this vaccine and subsequent efficacy studies. Immunoprophylaxis and immunotherapeutic application of the vaccine are discussed...
- Biofilm bacteria: formation and comparative susceptibility to antibioticsMerle E Olson
Department of Biological Sciences, University of Calgary, Alberta
Can J Vet Res 66:86-92. 2002..The CBD provides a valuable new technology that can be used to select antibiotics that are able to kill bacteria growing as biofilms...
- Giardia and Cryptosporidium in Canadian farm animalsM E Olson
Gastrointestinal Research Group, University of Calgary, Alta, Canada
Vet Parasitol 68:375-81. 1997..The prevalence of Giardia and Cryptosporidium was greater in calves and lambs compared to adults. This study demonstrates that both Giardia and Cryptosporidium appear to be prevalent in farm livestock...
- The Calgary Biofilm Device: new technology for rapid determination of antibiotic susceptibilities of bacterial biofilmsH Ceri
Biofilm Research Group, University of Calgary, Calgary, Alberta, Canada T2N 1N4
J Clin Microbiol 37:1771-6. 1999..The CBD offers a new technology for the rational selection of antibiotics effective against microbial biofilms and for the screening of new effective antibiotic compounds...
- Waterborne Giardia cysts and Cryptosporidium oocysts in the Yukon, CanadaP D Roach
Meriones Research, Calgary, Alberta, Canada
Appl Environ Microbiol 59:67-73. 1993..Despite this evidence, epidemiological data for the Yukon showed an endemic infection rate of only 0.1% for giardiasis (cryptosporidiosis is not notifiable).(ABSTRACT TRUNCATED AT 250 WORDS)..
- Individual intake and antiparasitic efficacy of free choice mineral containing fenbendazole for grazing steersK C Garossino
Department of Gastrointestinal Sciences, University of Calgary, Calgary, Alta, Canada T2N 4N1
Vet Parasitol 129:35-41. 2005..These results may be a reflection of Giardia re-infection occurring following treatment and highlight the need for variation in treatment regimes specifically targeted at the parasite of interest...
- Prevalence of Giardia cysts and Cryptosporidium oocysts and characterization of Giardia spp. isolated from drinking water in CanadaP M Wallis
Hyperion Research Ltd, Medicine Hat, Alberta, Canada
Appl Environ Microbiol 62:2789-97. 1996..This action level is lower than that proposed by Haas and Rose (C. N. Haas and J. B. Rose, J. Am. Water Works Assoc. 87(9):81-84, 1995) for Cryptosporidium spp. (10 to 30 oocysts per 100 liters)...
- Prevalence and genotyping of Giardia duodenalis from beef calves in Alberta, CanadaA J Appelbee
Gastrointestinal Research Group, Department of Medical Infectious Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada T2N 4N1
Vet Parasitol 112:289-94. 2003..This suggests that the Giardia carried by beef cattle may be a minimal zoonotic threat...
- Amdinocillin treatment of catheter-associated bacteriuria in rabbitsM E Olson
Department of Biological Sciences, University of Calgary, Alberta, Canada
J Infect Dis 159:1065-72. 1989....
- Prevalence of Giardia and Cryptosporidium and characterization of Cryptosporidium spp. isolated from wildlife, human, and agricultural sources in the North Saskatchewan River Basin in Alberta, CanadaT L Heitman
Department of Microbiology and Infectious Diseases, The University of Calgary, AB, Canada
Can J Microbiol 48:530-41. 2002..PCR-based characterization of rDNA from isolates of Cryptosporidium collected from Alberta human, pig, calf, mature steer, dog, cat, and beaver hosts revealed distinct genetic differences that may reflect host specificity...
- Transfer of a rifampicin-resistant Escherichia coli strain among feedlot cattleS M L Stevenson
Department of Biological Sciences, University of Lethbridge, Lethbridge, Alberta, Canada
J Appl Microbiol 95:398-410. 2003..To determine the incidence of transfer of a naturally occurring rifampicin-resistant strain of Escherichia coli (RREC) among cattle in a research feedlot...
- The use of a Giardia vaccine as an immunotherapeutic agent in dogsM E Olson
Microbiology and Infectious Diseases, Faculty of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1
Can Vet J 42:865-8. 2001..Clinical signs resolved between 16 and 42 days postvaccination and cessation of fecal cyst shedding was between 21 and 70 days. Vaccination is a potential method of treating giardiosis in dogs...
- The pig as a model for excisional skin wound healing: characterization of the molecular and cellular biology, and bacteriology of the healing processJ F Wang
Department of Microbiology and Infectious Disease, Faculty of Medicine, University of Calgary, Alberta, Canada
Comp Med 51:341-8. 2001..Further definition of this model should identify unique points in the healing process, and such information could lead to development of therapeutic interventions to improve skin wound healing...
- Effects of orally administered epidermal growth factor on enteropathogenic Escherichia coli infection in rabbitsA Buret
Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada T2N 1N4
Infect Immun 66:4917-23. 1998..EGF did not affect the proliferation of E. coli in vitro. The findings suggest that EGF protects the gastrointestinal tract against colonization by enteropathogenic E. coli...
- Specific mucosal immunity in the pathophysiology of bacterial prostatitis in a rat modelH Ceri
Department of Biological Sciences, University of Calgary, AB, Canada
Can J Microbiol 45:849-55. 1999..Immunization protected against toxaemia and septicemia, seen as a rare complication of acute prostatitis, but did not protect against acute prostatitis, nor alter the degree of tissue damage seen in the rat model...
- Characterization of biofilm growth and biocide susceptibility testing of Mycobacterium phlei using the MBEC assay systemE Bardouniotis
Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
FEMS Microbiol Lett 203:263-7. 2001..The MBEC assay system was seen to produce multiple and reproducible biofilms of M. phlei and to be a useful tool for susceptibility studies...
- The use of metronidazole, tinidazole and dimetridazole in eliminating trichomonads from laboratory miceP D Roach
Kananaskis Centre for Environmental Research, University of Calgary, Alberta, Canada
Lab Anim 22:361-4. 1988..2, 5.0 and 10.0 mg/ml dimetridazole failed to eliminate the trichomonas organism. A reduction in water intake was only noted with mice receiving 10 mg/ml dimetridazole. In mice receiving only 1% sucrose the infection was not eliminated...
- Xenoinfection of nonhuman primates by feline immunodeficiency virusJ B Johnston
Department of Microbiology and Infectious Diseases, University of Calgary, 3330 Hospital Drive Northwest, Calgary, Alberta T2N 4N1, Canada
Curr Biol 11:1109-13. 2001..Therefore, the study of FIV infection of primate cells may provide insight into the principles underlying retroviral xenoinfections...
- Monitoring respiratory function and sleep in the obese Vietnamese pot-bellied pigS A Tuck
Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada T2N 4N1
J Appl Physiol (1985) 87:444-51. 1999..Apneas and hypopneas were not a feature of breathing during sleep in these animals. Nonetheless, this animal preparation may be useful for exploring possible drug treatments for obstructive sleep-disordered breathing...
- Skin wound healing in the first generation (F1) offspring of Yorkshire and red Duroc pigs: evidence for genetic inheritance of wound phenotypeC L Gallant-Behm
Department of Microbiology and Infectious Diseases, Faculty of Medicine, University of Calgary, Calgary, Alta, Canada
Burns 32:180-93. 2006..However, the results indicate that further understanding in this model may provide insights into risk factors for hypertrophic scarring in human burn patients...
- Molecular and cell biology of skin wound healing in a pig modelJ F Wang
McCaig Center for Joint Injury and Arthritis Research, Department of Microbiology and Infectious Disease, Faculty of Medicine, University of Calgary, Alberta, Canada T2N 4N1
Connect Tissue Res 41:195-211. 2000....
- Giardia and Cryptosporidium in mammalian wildlife--current status and future needsAmber J Appelbee
World Health Organization Collaborating Centre for the Molecular Epidemiology of Parasitic Infections, School of Veterinary and Biomedical Science, Murdoch University, Murdoch 6150, Australia
Trends Parasitol 21:370-6. 2005..The combination of prevalence studies with modern molecular-genotyping techniques is providing valuable insights into the host specificity and possible transmission routes of these two important parasites...
- Prevalence of Giardia and Cryptosporidium in beef cows in southern Ontario and in beef calves in southern British ColumbiaTim A McAllister
Agriculture and Agri Food Canada, Lethbridge Research Centre, 5403 1st Avenue South, Lethbridge, Alberta T1J 4B1
Can Vet J 46:47-55. 2005..in calves were 36% and 13%, respectively. There was evidence that calves with Giardia were more likely to develop scours. Restricting cattle from surface water during periods of high shedding may reduce watershed contamination...
- Prevalence and infection pattern of naturally acquired giardiasis and cryptosporidiosis in range beef calves and their damsBrenda J Ralston
Department of Gastrointestinal Sciences, Faculty of Medicine, University of Calgary, 3330 Hospital Drive N W, Calgary, Alta, Canada T2N 4N1
Vet Parasitol 114:113-22. 2003..05) at 1 week post-calving and decreased to 0 at 13-16 weeks post-calving. This study is the first to document the cumulative prevalence and infection patterns of Giardia and Cryptosporidium in beef cattle under ranch conditions...
- Passive immunity and serological immune response in dairy calves associated with natural Giardia duodenalis infectionsRyan M O'Handley
Department of Gastrointestinal Sciences, Faculty of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta, Canada T2N 4N1
Vet Parasitol 113:89-98. 2003....
- Biofilm formation and biocide susceptibility testing of Mycobacterium fortuitum and Mycobacterium marinumElias Bardouniotis
Department of Biological Sciences, University of Calgary, 2500 University Drive N W, Calgary, Alberta T2N 1N4, Canada
Curr Microbiol 46:28-32. 2003..fortuitum biofilms displayed increased resistance over their planktonic state. This is contrasted with M. marinum biofilms, which were generally as or more susceptible over their planktonic state...
- An improved polymerase chain reaction assay for the detection of Tritrichomonas foetus in cattleD Douglas Nickel
Department of Biochemistry and Molecular Biology, Health Sciences Centre, 3330 Hospital Drive NW, University of Calgary, Calgary, Alberta T2N 4N1
Can Vet J 43:213-6. 2002..The test amplifies a region of the 5.8S ribosomal RNA gene of T. foetus, and it is simple, sensitive, and specific when compared with traditional methods to examine field samples...
- Biofilm formation by group a streptococci: is there a relationship with treatment failure?Joslyn Conley
Department of Community Health Sciences, University of Calgary, Calgary, Canada
J Clin Microbiol 41:4043-8. 2003..In addition, further investigations are necessary to determine if non-biofilm-forming strains of GAS exist and the roles of in vivo monospecies and multispecies biofilms in streptococcal pharyngitis treatment failure...
- The GacS sensor kinase controls phenotypic reversion of small colony variants isolated from biofilms of Pseudomonas aeruginosa PA14James A Davies
Department of Biological Sciences, University of Calgary, Calgary, AB, Canada
FEMS Microbiol Ecol 59:32-46. 2007..aeruginosa biofilms and suggests that in some instances GacS may be necessary for reversion of these variants to a wild-type state...