Abstract: The present invention relates to methods for determining whether blood flow is restricted in a blood vessel of an individual suspected of compromised blood flow in the vessel, the method comprising the steps of delivering UTP, a derivative thereof, or a salt thereof to the vessel, assessing blood flow quantitatively in the vessel by obtaining a value that correlates to blood flow in said vessel, comparing the obtained value with a reference value, and determining whether the individual has compromised blood flow based on the results of the comparison. The invention also provides for methods of diagnosing atherosclerotic and ischemic heart diseases using UTP, a derivative thereof, or a salt thereof, as well as methods for inducing maximal hyperemia for diagnostic purposes.

Abstract: The present invention relates to methods for determining whether blood flow is restricted in a blood vessel of an individual suspected of compromised blood flow in the vessel, the method comprising the steps of delivering UTP, a derivative thereof, or a salt thereof to the vessel, assessing blood flow quantitatively in the vessel by obtaining a value that correlates to blood flow in said vessel, comparing the obtained value with a reference value, and determining whether the individual has compromised blood flow based on the results of the comparison. The invention also provides for methods of diagnosing atherosclerotic and ischemic heart diseases using UTP, a derivative thereof, or a salt thereof, as well as methods for inducing maximal hyperemia for diagnostic purposes.

Abstract: The present invention relates to the field of regulating the activity of the purinergic receptors for the modulation of the vascular tone, particularly for the purpose of treatment of haemodynamic conditions by overriding of vasoconstriction activity, such as increases in sympathic vasoconstriction. Modulators, such as UTP analogues as described herein are preferably specific for P2Y2. Compounds capable of stimulating the P2Y2 receptor are suitable for the treatment or prevention wherein inhibition of vasoconstriction activity is desirable such as hypertension and hypertension relates disorders or diseases, whereas compound capable of counteracting the activity of the P2Y2 receptor are suitable for the treatment of or prevention wherein inhibition of vasodilatation is desirable.