Publications by authors named "Cynthia R Ward"

Objective: To investigate safety and effectiveness of velagliflozin oral solution as sole therapy in naïve and previously insulin-treated diabetic cats.

Animals: 252 client-owned cats receiving ≥ 2 doses of velagliflozin; 214 (85%) naïve diabetics and 38 (15%) insulin-treated diabetics.

Procedures: Prospective, baseline-controlled, open-label clinical field trial.

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Clinical Context: Since 1979 and 1980 when the first reports of clinical feline hyperthyroidism (FHT) appeared in the literature, our understanding of the disease has evolved tremendously. Initially, FHT was a disease that only referral clinicians treated. Now it is a disease that primary clinicians routinely manage.

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Objective: To determine the effects of dexamethasone or synthetic ACTH administration on endogenous ACTH concentrations in healthy dogs.

Animals: 10 healthy neutered dogs.

Procedures: Each dog received dexamethasone (0.

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Objective: To evaluate alterations in ligand-stimulated activity of G proteins in thyroid gland cells of hyperthyroid cats.

Sample Population: Membranes of thyroid gland cells isolated from 5 hyperthyroid cats and 3 age-matched euthyroid (control) cats immediately after the cats were euthanatized.

Procedures: Isolated thyroid cell membranes were treated with thyroid-stimulating hormone (TSH), and activation of G protein was quantified by measurement of the binding of guanosine triphosphate gamma labeled with sulfur 35 (GTPgamma(35)S).

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In human medicine, thyroid storm is a well-recognized condition of acute thyrotoxicosis in which the patient's metabolic, thermoregulatory, and cardiovascular mechanisms are overwhelmed by excessive circulating levels of thyroid hormone. The etiology is unknown, but multiple precipitating factors have been proposed. Hyperthyroid cats presenting in thyrotoxic crisis have clinical signs similar to those of human thyroid storm patients; however, thyroid storm has not yet been fully characterized in veterinary medicine.

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Flexible endoscopy in small animals.

Vet Clin North Am Small Anim Pract

September 2009

Flexible endoscopy is a valuable tool for the diagnosis of many small animal digestive tract diseases. This article provides a basic introduction to small animal gastrointestinal endoscopy including its diagnostic advantages as well as its limitations and complications. Although proficiency in endoscopic techniques can only be obtained through many hours of practice, this article should also encourage and stimulate the novice endoscopist.

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A 5-year-old spayed female cat was evaluated for hyperthyroidism based on an elevated free thyroxine (T(4)) measurement and bilaterally enlarged symmetric subcutaneous masses in the area of the thyroid glands. Physical examination revealed bilateral subcutaneous masses on either side of the cervical trachea. Blood was obtained for serum biochemical profile and thyroid function analysis.

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Background: The clinical significance of high serum concentration or activity of markers of liver damage in cats with hyperthyroidism is unknown.

Objective: To evaluate serum markers of liver function and damage, and ultrasonographic changes in cats with hyperthyroidism and with high liver enzymes, and to determine if abnormalities resolve after treatment with 131I.

Animals: Nineteen cats with hyperthyroidism (15 with high serum activities of liver enzymes) and 4 age-matched healthy control cats.

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Co-incident with the introduction of polybrominated diphenyl ethers (PBDEs) into household materials nearly 30 years ago, feline hyperthyroidism (FH) has increased dramatically. Risk of developing FH is associated with indoor living and consumption of canned catfood. We hypothesized that increases in FH were, in part, related to increased PBDE exposure, with key routes of exposure being diet and ingestion of house dust.

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Feline thyroid storm.

Vet Clin North Am Small Anim Pract

July 2007

Thyroid storm is a syndrome described in human medicine to define a multisystemic disorder resulting from organ exposure to excessive levels of thyroid hormone. This form of acute thyrotoxicosis, although uncommon, can be life threatening and is a significant cause of mortality in human emergency rooms. Although thyroid storm is a well-recognized clinical entity in human medicine, it has not been described in veterinary medicine.

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None of the studies to date have isolated a single dominant factor that could be incriminated in the development of hyperthyroidism in cats. Rather, most of the studies provide further evidence of the widely held view that hyperthyroidism is a multifactorial disease in this species. At this time, the most likely candidates include one or more of the goitrogenic chemicals that have been shown to be present in cat food or the cat's environment.

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Objective: To identify within guanosine triphosphate-binding proteins (G proteins) the subset of inhibitory G proteins (G) that have decreased expression in adenomatous thyroid glands obtained from hyperthyroid cats.

Sample Population: Adenomatous thyroid glands obtained from 5 hyperthyroid cats and normal thyroid glands obtained from 3 age-matched euthyroid cats.

Procedure: Expression of G(i1), G(i2), and G(i3) in enriched membrane preparations from thyroid glands was quantified by use of immunoblotting with G(i) subtype-specific antibodies.

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Feline hyperthyroidism is a common, spontaneous disease in older cats that is similar clinically and histopathologically to human toxic multinodular goiter (TNG). In this study, the functional response of feline normal thyroid (NT) and hyperthyroid (HT) cells grown in monolayer culture to thyrotropin (TSH) was determined. Basal levels of DNA synthesis were similar in NT and HT cells.

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Five adult Samoyed dogs from two unrelated litters were diagnosed with diabetes mellitus. Two full-sibling male dogs (Family A) were raised in the same household. The other three dogs, two female and one male, were also full siblings (Family B) raised in different households.

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