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C. A. TONY BUFFINGTON
COMORBIDITY OF INTERSTITIAL CYSTITIS WITH OTHER UNEXPLAINED CLINICAL CONDITIONS
THE JOURNAL OF UROLOGY Vol. 172, 1242–1248, October 2004
ABSTRACT
Purpose: The aims of this review are 1) to consider the hypothesis that interstitial cystitis (IC)
is not a single disease entity in all patients by reviewing the evidence for the presence of IC
subtypes and for the comorbidity of various unexplained clinical conditions in some patients with
IC, and 2) to describe recent results obtained in humans and in cats with severe feline IC (FIC)
that suggest the presence of an underlying neuroendocrine abnormality.
Materials and Methods: The IC literature concerning comorbidity with other disorders was
reviewed and these findings were compared with those of investigators studying the comorbid
disorders and comparable data on cats with FIC.
Results: A significant overlap of symptoms exists among a number of unexplained clinical
conditions and a common stress response pattern of increased sympathetic nervous system
function in the absence of comparable activation of the hypothalamic-pituitary-adrenal axis
occurs in a subset of patients with many of these conditions. A comparable pattern exists in cats
with FIC, which also includes increased corticotropin releasing factor activity and decreased
adrenocortical reserve.
Conclusions: Further investigation of the stress response system of patients with IC seems
merited, which may provide novel approaches to therapy in some patients.
KEY WORDS:
bladder; cystitis, interstitial; adrenal cortex; neurosecretory systems; cat diseases
COMORBIDITY OF INTERSTITIAL CYSTITIS WITH OTHER UNEXPLAINED CLINICAL CONDITIONS
THE JOURNAL OF UROLOGY Vol. 172, 1242–1248, October 2004
ABSTRACT
Purpose: The aims of this review are 1) to consider the hypothesis that interstitial cystitis (IC)
is not a single disease entity in all patients by reviewing the evidence for the presence of IC
subtypes and for the comorbidity of various unexplained clinical conditions in some patients with
IC, and 2) to describe recent results obtained in humans and in cats with severe feline IC (FIC)
that suggest the presence of an underlying neuroendocrine abnormality.
Materials and Methods: The IC literature concerning comorbidity with other disorders was
reviewed and these findings were compared with those of investigators studying the comorbid
disorders and comparable data on cats with FIC.
Results: A significant overlap of symptoms exists among a number of unexplained clinical
conditions and a common stress response pattern of increased sympathetic nervous system
function in the absence of comparable activation of the hypothalamic-pituitary-adrenal axis
occurs in a subset of patients with many of these conditions. A comparable pattern exists in cats
with FIC, which also includes increased corticotropin releasing factor activity and decreased
adrenocortical reserve.
Conclusions: Further investigation of the stress response system of patients with IC seems
merited, which may provide novel approaches to therapy in some patients.
KEY WORDS:
bladder; cystitis, interstitial; adrenal cortex; neurosecretory systems; cat diseases