No description available.

Thèse d'exercice : Chirurgie dentaire : Université de Nantes : 2004. / Bibliogr. f. 81-87 [49 réf.].

Canine osteosarcoma (OSA) is the most common bone tumour in dogs and is characterized by massive genomic instability throughout the cancer genome. Using matched primary tumour and metastasis samples from 8 OSA cases, we identified 2 focally deleted (<0.2 Mb) novel candidate genes, cyclin-dependent kinase inhibitor 2B (CDKN2B) and the membrane associated guanylate kinase, WW and PDZ domain containing 2 (MAGI2), which have not been previously identified in canine OSA and may have roles in driving OSA tumour progression. We also identified highly similar genomic profiles between matched samples, which yielded a small list of candidate regions that may harbour genes that drive metastasis formation. This study identified potential therapeutic targets, prognostic markers and early detectors of metastasis, in addition to providing insight into the OSA tumour progression.

No description available.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1957. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 142-146).

Inaug.-diss.-Bern. / "Sonderabdruck aus dem Centralblatt für bakt. etc. I. abt. Originale. bd. 50. hft. 3." Lebenslauf. "Literatur": p. 19.

Background: Because of the vague clinical signs and limitations of thyroid function tests, misdiagnosis of hypothyroidism in dogs is common and leads to inappropriate treatment with levothyroxine. Chronic supplementation can suppress the hypothalamic-pituitary-thyroid axis (HPTA) and make it difficult to assess thyroid function following withdrawal of levothyroxine. Objectives: To determine if the HPTA is suppressed following levothyroxine administration in euthyroid dogs and the time required for resolution of any suppression. Animals: Twenty-eight healthy euthyroid dogs Methods: A prospective randomized study administering levothyroxine to euthyroid dogs with levothyroxine, for either 8 weeks (group 1) or 16 weeks (group 2). Serum concentrations of total thyroxine (T4), free thyroxine (fT4) by equilibrium dialysis, thyrotropin (TSH), and 3,5,3'-triiodothyronine (T3) were measured every 4 weeks during supplementation and for 16 weeks after levothyroxine was discontinued. Results: Mean serum T4 and fT4 were significantly higher and TSH was lower in all dogs during levothyroxine administration compared to baseline. Mean serum concentrations of T4 and fT4 in both groups and TSH in group 1, beginning 1 week after levothyroxine was discontinued, were significantly different compared to values during levothyroxine administration but not compared to baseline values. Conclusions and Clinical Importance: Suppression of the HPTA occurred during levothyroxine supplementation and mean serum T4, fT4 and TSH concentrations were not significantly different compared to baseline 1 week after discontinuation in both groups. Assessing thyroid function tests 1 week after cessation of levothyroxine will likely provide an accurate assessment of thyroid function in euthyroid dogs. / Master of Science

Thesis (MMedVet (Medicine))--University of Pretoria, 2006. / Includes bibliographical references.

Orientador: João Pessoa Araújo Junior / Banca: Paulo Eduardo Brandão / Banca: Alexandre Secorum Borges / Resumo: A cinomose e a parvovirose canina são duas enfermidades infecto-contagiosas de grande importância para a clínica de pequenos animais onde a PCR vem sendo aplicada com ótimos resultados no diagnóstico. No entanto, para o sucesso da técnica, é necessário que o ácido nucléico esteja o mais puro possível e livre de inibidores das polimerases (Transcriptase reversa e/ou Taq DNA polimerase), desejando-se um método de extração simples e rápido. O teste de coaglutinação utilizando o Staphylococcus aureus (COA) é baseado na propriedade da proteína A de se ligar especificamente à porção Fc da imunoglobulina G de alguns mamíferos e algumas subclasses de IgG de camundongos. Assim, neste trabalho utilizou-se a coglutinação para obtenção de DNA ou RNA livres de inibidores, com capacidade de concentração de partículas virais dispersas nas amostras biológicas e de forma simples, rápida e de baixo custo. Para tanto, 10 amostras de fezes positivas para o vírus da parvovirose canina e 17 amostras de urina positivas para o vírus da cinomose foram submetidas à extração de ácidos nucléicos utilizando o COA e kits comerciais para posteriormente serem analisadas pela PCR em tempo real e PCR convencional respectivamente. As amostras de fezes foram diluídas de 1: 10 a 1: 100 000 e as amostras de urina foram utilizadas puras. A metodologia desenvolvida foi eficiente na extração dos dois tipos de amostra. O método proposto demonstrou ser confiável e de baixo custo para a preparação de DNA e RNA viral para o diagnóstico molecular. / Abstract: PCR presents excellent results for the diagnosis of canine distemper and canine parvoviruses, two important infectious and contagious diseases for small animal internal medicine. However, success of technique depends on nucleic acid samples free of polymerase inhibitors (Reverse Transcriptase and / or Taq DNA polymerase). The coagglutination test using Staphylococcus aureus (COA) is based on the property of specific binding of protein A to the Fc portion of immunoglobulin G of some mammals and some of IgG subclasses of mice. This work was carried out the coagglutination procedure to obtain nucleic acid inhibitors free, with capacity for viral particle concentration dispersed in biological samples, simply, quickly and low cost. For this purpose, 10 canine parvovirus positive stool samples and 17 canine distemper virus positive urine samples were submitted to the preparation of nucleic acids using the COA and commercial kits in order to be analyzed by real-time PCR or conventional PCR respectively. Fecal specimens were diluted from 1: 10 to 1: 100 000 and urine samples were used pure. The developed methodology was efficient in extracting the two types of sample. The method proposed demonstrated to be reliable and cheap to prepare viral DNA or RNA for molecular diagnosis. / Mestre

No description available.