Research Topics
| J A Ramos-VaraSummaryAffiliation: University of Missouri Country: USA Publications
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Detail Information
Publications
Intestinal extramedullary plasmacytoma associated with amyloid deposition in three dogs: an ultrastructural and immunoelectron microscopic studyJ A Ramos-Vara
Animal Health Diagnostic Laboratory, Michigan State University, East Lansing, USA
Ultrastruct Pathol 22:393-400. 1998..Extracellular and intracellular amyloid fibrils and the contents of membrane-bound electron-dense bodies of plasma cells reacted with antibody to lambda-light chain of immunoglobulins by immunogold staining...- Immunohistochemical detection of uroplakin III, cytokeratin 7, and cytokeratin 20 in canine urothelial tumorsJ A Ramos-Vara
Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia, MO 65205, USA
Vet Pathol 40:55-62. 2003..UP III is a specific and sensitive marker for canine transitional epithelial (urothelial) neoplasms, detecting 91% of TCCs. Negative results may be observed with anaplastic tumors... - Bronchitis and bronchiolitis in a cat with cilia-associated respiratory bacillus-like organismsJ A Ramos-Vara
Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia 65205, USA
Vet Pathol 39:501-4. 2002..The significance of CLO in the pulmonary lesions was not determined... - Immunohistochemical detection of thyroid transcription factor-1, thyroglobulin, and calcitonin in canine normal, hyperplastic, and neoplastic thyroid glandJ A Ramos-Vara
Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia 65205, USA
Vet Pathol 39:480-7. 2002..TTF-1 is a good marker of thyroid differentiation and can be used in conjunction with thyroglobulin and calcitonin to increase the detection and differentiation of thyroid tumors and their metastases... - Melan A and S100 protein immunohistochemistry in feline melanomas: 48 casesJ A Ramos-Vara
Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia 65205, USA
Vet Pathol 39:127-32. 2002..Although less sensitive than S100 protein, Melan A is more specific for melanoma and is useful in differentiating feline cutaneous melanoma from the more common pigmented basal cell tumor... - Immunohistochemical characterization of canine hyperplastic hepatic lesions and hepatocellular and biliary neoplasms with monoclonal antibody hepatocyte paraffin 1 and a monoclonal antibody to cytokeratin 7J A Ramos-Vara
Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia 65205, USA
Vet Pathol 38:636-43. 2001..Prolonged fixation did not alter the staining with Hep Par 1. We conclude that Hep Par 1 is a specific and sensitive marker for canine hepatocellular tumors and allows distinction between hepatocellular and biliary neoplasms... - Immunoreactivity of A103, an antibody to Melan A, in canine steroid-producing tissues and their tumorsJ A Ramos-Vara
Veterinary Medical Diagnostic, University of Missouri, Columbia 65211, USA
J Vet Diagn Invest 13:328-32. 2001..As in human tumors, immunohistochemistry for Melan A stains many canine steroid-producing tumors and can be used to distinguish these tumors from those of nonstereidogenic cells... - Retrospective study of 338 canine oral melanomas with clinical, histologic, and immunohistochemical review of 129 casesJ A Ramos-Vara
Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia 65205, USA
Vet Pathol 37:597-608. 2000..1%) of 129 melanomas, respectively. Antibodies against other melanocytic-associated antigens (tyrosinase, glycoprotein 100) did not yield adequate staining. We conclude that Melan A is a specific and sensitive marker for canine melanomas... - Mammary duct ectasia in dogs: 51 cases (1992-1999)M A Miller
Veterinary Medical Diagnostic Laboratory, College of Veterinary, Medicine, University of Missouri-Columbia, 65211, USA
J Am Vet Med Assoc 218:1303-7. 2001..Duct ectasia should be considered as a cause for mammary enlargement, especially in young dogs or when its cystic nature is evident. Mastectomy is usually curative, and neoplasia should be ruled out in dogs with ectasia... - 3-methylindole induces transient olfactory mucosal injury in poniesM A Miller
UMC Veterinary Medical Diagnostic Laboratory, PO Box 6023, Columbia, MO 65205, USA
Vet Pathol 40:363-70. 2003..Results indicate that 3MI transiently injures equine olfactory mucosa without the extensive necrosis, scarring, or metaplasia seen in murine olfactory mucosa or in equine bronchiolar epithelium... - Immunohistochemical characterization of canine intestinal epithelial and mesenchymal tumours with a monoclonal antibody to hepatocyte paraffin 1 (Hep Par 1)J A Ramos-Vara
Veterinary Medical Diagnostic Laboratory, University of Missouri, P.O. Box 6023, Columbia, Missouri 65205, USA
Histochem J 34:397-401. 2002..Hep Par 1 can be used to differentiate hepatocellular from biliary neoplasms but its value in differentiating metastatic tumours to the liver is questionable due to the reactivity of Hep Par 1 in many intestinal tumours... - Soft tissue sarcomas in the African hedgehog (Atelerix albiventris): microscopic and immunohistologic study of three casesJ A Ramos-Vara
Veterinary Medical Diagnostic Laboratory, University of Missouri, Columbia 65205, USA
J Vet Diagn Invest 13:442-5. 2001..1 was examined ultrastructurally and the neoplastic cells resembled fibroblasts. Hedgehog no. 1 was euthanized at the time of the biopsy. The outcome of the other hedgehog was unknown... - Usefulness of thyroid transcription factor-1 immunohistochemical staining in the differential diagnosis of primary pulmonary tumors of dogsJ A Ramos-Vara
Animal Disease Diagnostic Laboratory, Purdue University, 406 South University, West Lafayette, IN 47907, USA
Vet Pathol 42:315-20. 2005..On the basis of our limited studies and the human literature, it appears that MoAb 8G7G3/1 to TTF-1 is a highly specific (with the exception of thyroid tumors) and moderately sensitive marker for canine pulmonary epithelial tumors... - Immunohistochemical detection of protein gene product 9.5 (PGP 9.5) in canine epitheliotropic T-cell lymphoma (mycosis fungoides)J A Ramos-Vara
Animal Disease Diagnostic Laboratory, Purdue University, West Lafayette, IN 47907, USA
Vet Pathol 44:74-9. 2007..This unexpected staining of lymphocytes in mycosis fungoides with an antibody to PGP 9.5 demonstrates its presence in nonneuroendocrine tumors and precludes its use as the sole diagnostic marker in discrete cell tumors in the skin... - Immunohistochemical detection of multiple myeloma 1/interferon regulatory factor 4 (MUM1/IRF-4) in canine plasmacytoma: comparison with CD79a and CD20J A Ramos-Vara
Animal Disease Diagnostic Laboratory, Purdue University, 406 South University, West Lafayette, IN 47907, USA
Vet Pathol 44:875-84. 2007.... - Histologic and immunohistochemical characterization of a testicular mixed germ cell sex cord-stromal tumor and a leydig cell tumor in a dogM A Owston
Animal Disease Diagnostic Laboratory and Department of Comparative Pathobiology, School of Veterinary Medicine, Purdue University, 406 South University, West Lafayette, IN 47907 2065, USA
Vet Pathol 44:936-43. 2007..5, and melan A will help distinguish the three main cell types in canine testicular germ cell and sex cord-stromal tumors... - Interstitial cell tumor and Sertoli cell tumor in the testis of a catM A Miller
Department of Veterinary Pathology, Purdue University, West Lafayette, IN 47907, USA
Vet Pathol 44:394-7. 2007..Neither tumor had metastasized. The right testis was never found and was presumed to have been removed during the reported castration procedure... - Pulmonary neoplasia in two llamas (Lama glama)J A Ramos-Vara
Vet Pathol 41:520-3. 2004..The diagnosis was adenosquamous carcinoma. Pulmonary tumors account for 23% of neoplasms in South American camelids in our laboratory, making this the second most common type of neoplasm after lymphosarcoma... 
Metritis, valvular endocarditis, and septicemia by Actinobacillus equuli in a gilt in the United StatesJ A Ramos-Vara
Animal Disease Diagnostic Laboratory, Purdue University, 406 South University, West Lafayette, IN 47907, USA
Vet Pathol 45:495-9. 2008..A. equuli in pigs in the United States has been reported only twice and not, to our knowledge, in the last 30 years. This is the first time that molecular techniques have been used to characterize this organism in FFPE porcine tissues...