Vasopressin and motion sickness in cats

Area of Science:

• Neuroscience
• Physiology
• Animal Behavior

Background:

• Arginine vasopressin (AVP) is a neuropeptide hormone involved in various physiological processes.
• Motion sickness is a common condition that affects many species, including cats.
• Previous research has explored the role of AVP in stress and fluid balance, but its specific involvement in motion sickness is less understood.

Purpose of the Study:

• To investigate the relationship between arginine vasopressin (AVP) levels and motion sickness in cats.
• To determine if AVP levels in plasma and cerebrospinal fluid (CSF) change under motion-sickness-inducing conditions.
• To differentiate the roles of systemic and central AVP in the vomiting response to motion.

Main Methods:

• Cats were subjected to motion-sickness-inducing stimuli.
• Blood plasma and cerebrospinal fluid (CSF) samples were collected from cats.
• Arginine vasopressin (AVP) levels were measured in plasma and CSF samples using established assays.
• Animals were categorized based on susceptibility to motion sickness and occurrence of vomiting.

Main Results:

• Plasma AVP levels significantly increased in cats exposed to motion, regardless of susceptibility.
• A dramatic elevation (up to 27-fold) in plasma AVP was observed immediately following vomiting.
• No significant difference in resting CSF-AVP levels was found between susceptible and resistant cats.
• Resting CSF-AVP levels were lower in cats that vomited during motion compared to those that did not.

Conclusions:

• Systemic arginine vasopressin (AVP) levels are directly correlated with motion-induced vomiting in cats.
• Cerebrospinal fluid (CSF) AVP levels do not appear to change acutely with vomiting.
• Lower resting CSF-AVP levels may indicate a predisposition to vomiting during motion in cats.