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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

The panicogenic effects of cholecystokinin-tetrapeptide are antagonized by L-365,260, a central cholecystokinin receptor antagonist, in patients with panic disorder.

BACKGROUND: We investigated whether the selective brain cholecystokinin (CCKB) receptor antagonist, L-365,260, could antagonize the panicogenic effects of CCK-tetrapeptide (CCK-4) in patients with panic disorder. DESIGN: The study employed a double-blind, placebo-controlled, two-period crossover design. Patients (N = 29) received a single oral dose of L-365,260 (10 or 50 mg) or placebo 90 minutes prior to injection of CCK-4. After a 1-week washout period, patients received a different dose of L-365,260 or placebo according to a balanced incomplete block design. RESULTS: The 50-mg dose of L-365,260 was superior to placebo in reducing the number (P < .01) and sum intensity (P < .001) of symptoms induced with CCK-4. Panic attack frequency following CCK-4 injection was 88% for patients receiving placebo, 33% for those receiving the 10-mg dose, and 0% for those receiving the 50-mg dose. The difference between the effects of the 50-mg dose and placebo was statistically significant (P = .002). Increases in heart rate following CCK-4 injection were markedly reduced with both the 50-mg (P < .0001) and 10-mg (P < .01) doses compared with placebo. CONCLUSION: These data suggest that CCKB receptors are an important site of action of exogenous CCK-4. It will be important to determine in future studies the efficacy of CCKB receptor antagonists as antipanic agents.[1]

References

  1. The panicogenic effects of cholecystokinin-tetrapeptide are antagonized by L-365,260, a central cholecystokinin receptor antagonist, in patients with panic disorder. Bradwejn, J., Koszycki, D., Couëtoux du Tertre, A., van Megen, H., den Boer, J., Westenberg, H. Arch. Gen. Psychiatry (1994) [Pubmed]
 
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