Peer-reviewed veterinary case report
How to tell if a diabetic cat has acromegaly instead
By S. Niessen et al.·Published in PLoS ONE·2015·View original on Semantic Scholar →
PetCaseFinder translated the abstract of this peer-reviewed paper into plain English so pet owners can read it. We do not publish original research — every detail traces back to the citation above. How we work →
Original publication title: Studying Cat (Felis catus) Diabetes: Beware of the Acromegalic Imposter
- Species:
- cat
Plain-English summary
A group of diabetic cats was studied to see how many had a condition called hypersomatotropism, which can mimic diabetes symptoms. Out of 1,221 diabetic cats, about 26% had high levels of a specific hormone that indicated the presence of a pituitary tumor. Further imaging confirmed that most of these cats had a tumor, even though many did not show the typical signs of acromegaly (a condition often associated with these tumors). This suggests that veterinarians should consider testing for hypersomatotropism in diabetic cats, as it could change how they approach treatment.
People also search for: cat diabetes symptoms · cat pituitary tumor treatment · signs of acromegaly in cats
Abstract
Naturally occurring diabetes mellitus (DM) is common in domestic cats (Felis catus). It has been proposed as a model for human Type 2 DM given many shared features. Small case studies demonstrate feline DM also occurs as a result of insulin resistance due to a somatotrophinoma. The current study estimates the prevalence of hypersomatotropism or acromegaly in the largest cohort of diabetic cats to date, evaluates clinical presentation and ease of recognition. Diabetic cats were screened for hypersomatotropism using serum total insulin-like growth factor-1 (IGF-1; radioimmunoassay), followed by further evaluation of a subset of cases with suggestive IGF-1 (>1000 ng/ml) through pituitary imaging and/ or histopathology. Clinicians indicated pre-test suspicion for hypersomatotropism. In total 1221 diabetic cats were screened; 319 (26.1%) demonstrated a serum IGF-1>1000 ng/ml (95% confidence interval: 23.6–28.6%). Of these cats a subset of 63 (20%) underwent pituitary imaging and 56/63 (89%) had a pituitary tumour on computed tomography; an additional three on magnetic resonance imaging and one on necropsy. These data suggest a positive predictive value of serum IGF-1 for hypersomatotropism of 95% (95% confidence interval: 90–100%), thus suggesting the overall hypersomatotropism prevalence among UK diabetic cats to be 24.8% (95% confidence interval: 21.2–28.6%). Only 24% of clinicians indicated a strong pre-test suspicion; most hypersomatotropism cats did not display typical phenotypical acromegaly signs. The current data suggest hypersomatotropism screening should be considered when studying diabetic cats and opportunities exist for comparative acromegaly research, especially in light of the many detected communalities with the human disease.
Find similar cases for your pet
PetCaseFinder finds other peer-reviewed reports of pets with the same symptoms, plus a plain-English summary of what was tried across them.
Search related cases →Original publication on Semantic Scholar: https://www.semanticscholar.org/paper/26023776