Results 26–50 of 100 for "toxicology."
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Bromethalin poisoning in a feline
...y Medical Diagnostic Laboratory (TVMDL) for histopathologic evaluation and toxicology testing. Following a negative rabies test, a portion of fixed brain was examined and the white matter of the cerebrum, cerebellum and brainstem were found to exhibit moderate diffuse spongiosis. White matter spongiosis with no inflammatory response is the central nervous system lesion associated with bromethalin intoxication. No significant microscopic lesions we...
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TVMDL Mobile app
...bmission process with abbreviated submission form. Save clinic and contact information to allow for fast submission of each new sample. Quick results allow for rapid clinical intervention and treatment. Digital Toxicology submission: Submit images of potentially toxic plants, mushrooms, baits, and other substances Easy submission process with abbreviated submission form Removes hassle of shipping forages...
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Nitrate toxicity in a herd of cattle
...ne, serum and water. In this case, ocular fluid and serum were sent to the toxicology lab for testing. Both were strongly positive. This coupled with gross necropsy findings provided a rapid diagnosis of nitrate toxicity. It was later learned that the check valve that prevents the fertilizer from entering into the irrigation system was faulty. This allowed the cattle to be unintentionally exposed to high levels of nitrates from the fertilizer. Sou...
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Chlorinated hydrocarbon and arsenic poisoning in cattle
...ecropsy. Rumen content and fresh liver were collected and submitted to the toxicology section for chemical analysis. A comprehensive metals profile was performed on the fresh liver using inductively coupled plasma mass spectrometry (ICP-MS). A toxic amount of arsenic (77.66 micrograms per gram dry weight) was measured in the liver by ICP-MS. Further testing to identify the source of the arsenic (organic vs. inorganic) was not pursued. A toxic chem...
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Disease Surveillance
...CVM) with large-scale investigations of CVM-regulated products, such as animal feed or drugs. Our Commitment to Vet-LIRN TVMDL is committed to offering an additional level of extensive subject matter expertise and physical capabilities in toxicology, pathology, and microbiology to Vet-LIRN. TVMDL serves as a reference center for other state laboratories for some relevant tests therefore our addition to the Vet-LIRN actually means surveillance incr...
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Nitrate Poisoning in Cattle
...testing services, visit tvmdl.tamu.edu or call 1.888.646.5623. Reference: Nicholson, SS. Nitrate and nitrite accumulating plants. Veterinary Toxicology: Basic and clinical principles. 2007, 876-879....
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Coffee Senna Poisoning in Cattle
...ne calf. Microscopic examination of the rumen content was performed by the toxicology section at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in College Station. Coffee senna seed pod fragments and leaf material was observed in the rumen content from both calves. No evidence of consumption of nightshade or cocklebur was observed in either animal. Histopathology was performed on fixed tissues, including skeletal muscle, liver, kid...
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Salt Toxicity in Broilers
...s of vacuolation in the cerebellar white matter and cerebrum (see Fig. 1). Toxicology analysis on five brain samples revealed high levels of sodium in all of them, with a range from 8,810 ppm to 14,300 ppm. Sodium levels above 7,600 ppm in the brain of chickens are considered toxic. For more information on this case, contact Center Resident Director Dr. Senties-Cue. To learn more about TVMDL’s test offerings, visit tvmdl.tamu.edu or call 1.888.646...
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TVMDL joins Veterinary Laboratory Investigation and Response Network
...t-LIRN its extensive subject matter expertise and physical capabilities in toxicology, pathology, and microbiology along with one of the largest caseload volumes in the nation,” Akey said. “TVMDL serves as a reference center for other state laboratories for some relevant tests therefore its addition to the Vet-LIRN actually means surveillance increases not just for one state, but many.” In addition to furthering TVMDL’s impact, joining Vet-LIRN wi...
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Cyanobacteria: No winter break this year
...first step is always to decontaminate. For more information about TVMDL’s toxicology services, visit tvmdl.tamu.edu or call the College Station laboratory at 1.888.646.5623. Figure 1. Blue-green algae sample undisturbed. Figure 2. Blue-green algae sample after being disturbed. Figure 3. Photomicrograph depicting microcystis in submitted water sample. Figure 4. Photomicrograph depicting microcystis colonies in submitted water sample. Enlarged 200x...
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Arsenic toxicosis in two calves
...myocardial sarcocysts. The remaining organs were relatively unremarkable. Toxicology testing determined the ocular fluid was negative for nitrate/nitrite and the rumen content did not contain detectable organic pesticides by GC/MS. A metal & mineral panel performed on the liver found an arsenic concentration of 109.74 µg/g on a dry weight basis. Bovine liver arsenic concentrations are normally below 2 µg/g dry weight, and concentrations over 8 µg...
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Pyrrolizidine Alkaloid Toxicity in a mature brangus cow
....” Merck Manual, Merck & Co., Inc., October 2013, merckvetmanual.com/en-ca/toxicology/pyrrolizidine-alkaloidosis/overview-of-pyrrolizidine-alkaloidosis. Joaquín Tamariz, et al. The Alkaloids: Chemistry and Biology, Volume 80; Hans-Joachim Knölker, editor. 2018. Pgs. 1-314. Cullen, J.M., & Stalker, M.J. (2016). Liver and Biliary system. In M.G. Maxie (Ed.), Jubb, Kennedy and Palmer’s pathology of domestic animals (6th ed., pp. 336-338). St. Louis,...
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Strychnine detected in a puppy
...strychnine test visit tvmdl.tamu.edu or call 1.888.646.5623. References: 1 Gupta, Ramesh C. “Non-anticoagulant rodenticides: Strychnine.” Veterinary Toxicology, edited by Ramesh C. Gupta, Elsevier Inc., 2007, pp. 548-550....
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Five employees honored with Director’s Excellence Awards
...osario, Poultry Programs Administrator | College Station Bailey Schulz, Administrative Coordinator | College Station Professional Dr. Guy Sheppard, Veterinary Diagnostician | College Station Technical Malerie Larson, Toxicology Technician | College Station Student Sydney Buckner, Necropsy Student Assistant | Canyon Learn more about TVMDL by visiting tvmdl.tamu.edu or calling one of the agency’s four laboratory locations....
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Know your pasture! Lantana poisoning in a group of steers
...zation and edema. All of this pointed toward a secondary photosensitization. Fragments of Lantana camara were found in the rumen content, and the plant was later found in the pasture. To learn more about this case, contact Dr. Cat Barr, Veterinary Toxicologist at the College Station lab. For more information on TVMDL’s test catalog, visit tvmdl.tamu.edu. Photomicrograph depicting bile ductule proliferation. Swollen hepatocytes with pale cytoplasm....
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Burn-pile leads to arsenic poisoning
...ressing or becomes aggressive could be lead poisoned. Whole blood (EDTA) is the best sample to submit for diagnostic testing. To learn more about this case, contact Dr. Cat Barr, Veterinary Toxicologist at the College Station laboratory. For more information about TVMDL’s test catalog and services, visit tvmdl.tamu.edu or call 1.888.646.5623....
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Strongylus vulgaris associated with liver damage and neurologic symptoms in a gelding
...o hepatic encephalopathy. Since only fixed tissues were submitted, further toxicologic testing could not be pursued. Of ancillary interest in this case was the finding of cranial mesenteric arteritis with the nematode Strongylus vulgaris embedded in the lesion. According to the AAEP parasite control guidelines, the commonly used strategies for control of gastrointestinal parasites in adult horses are based on concepts that are more than 40 years o...
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Coffee senna linked to cattle deaths in Texas
...this case, contact Veterinary Diagnostician Dr. Guy Sheppard or Veterinary Toxicologist Dr. Cat Barr. Visit tvmdl.tamu.edu or call 1.888.646.5623 for more information on TVMDL’ test offerings. Reference Welborn, M.G. (2008). Anthrax. Blackwell’s Five-Minute Veterinary Consult: Ruminant. S. R. R. Haskell. Ames, IA, Wiley-Blackwell: 826-827 Figure 1. In recent cases of coffee senna poisoning, diagnosis was made by identifying plant materials in rume...
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Sodium (FAAS) [Referral]
Measurement of sodium by flame atomic absorption spectroscopy (FAAS).
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Urolith Composition (FTIR)
Determination of the chemical composition of uroliths by fourier-transform infrared spectroscopy.
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Ethylene Glycol (GC/MS)
Detection of ethylene glycol by gas chromatography/mass spectrometry.
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Glycolic Acid (GC/MS)
Detection of glycolic acid, the primary metabolite of ethylene glycol, by gas chromatography/mass spectrometry.
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Herbicide (GC/MS)
Detection of a variety of herbicides by gas chromatography/mass spectrometry.
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Petroleum (GC/MS)
Detection of petroleum hydrocarbons by gas chromatography/mass spectrometry.
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Anticoagulant Rodenticides (LC/MS)
Measurement of anticoagulant rodenticides by liquid chromatography/mass spectrometry. Targets include warfarin, bromadiolone, brodifacoum, diphacinone, chlorophacinone, coumatetralyl, difenacoum, difethialone, coumachlor, and dicoumarol.