Human data on the development of tolerance in different cranial arteries over more than 24 h are lacking.
Given thrice daily it results in a rather continuous exposure to NO thus enhancing the development of tolerance [16].
Nω-nitro-l-arginine did not prevent the development of tolerance or withdrawal hyperexcitability in the electroshock model, while in the PTZ model inhibition of nitric synthesis prevented withdrawal hyperexcitability but had no effect on the development of tolerance.
Their role in preventing the development of tolerance to the anticonvulsant effect was seen on Days 1, 3, and 6.
Morphine is an exceptionally effective analgesic whose utility is compromised by the development of tolerance and dependence to the drug.
The development of tolerance to and physical dependence on opioids remains a significant barrier to their clinical use.
In contrast, tolerance in the middle cerebral artery was complete and appeared already after 24 h, i.e. earlier than the development of tolerance to headache (Fig. 1).
Another possible explanation of the inverse association between headache and alcohol drinking is related to the development of tolerance for headache in drinkers.
Regarding GAD and tension-type headache, the administration of BZDs is possible, but long-term therapy with BZD is not feasible because of the development of tolerance.
Conclusion Our results suggest MDPV-induced marked neurobehavioral effects in the rat with the development of tolerance after binge-like and prolonged repeated administration.
Habitual drinking leads to the development of tolerance for alcohol-induced headache [6], which may affect the mechanisms by which common headaches occur.
