Vasopressin has three main effects: 1  Increasing the water permeability of distal convoluted tubule and collecting duct cells in the kidney, thus allowing water reabsorption and excretion of more concentrated urine, i.e., antidiuresis.
It can be caused by damage to the vagus nerve, which regulates the digestive system. A damaged vagus nerve prevents the muscles in the stomach and intestine from functioning, preventing food from moving through the digestive system properly. Often, the cause of gastroparesis is unknown.
Woman with her hands on her stomach Photo Credit Jupiterimages/Polka Dot/Getty Images. Gastroparesis â also known as slow-emptying stomach â is a condition where the muscles in the stomach donât work properly, causing food to linger in the stomach longer than normal. Gastroparesis can cause nausea, vomiting, bloating, a lack of appetite and acid reflux.