2015
DOI: 10.1038/tp.2015.93
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Low-dose oxytocin delivered intranasally with Breath Powered device affects social-cognitive behavior: a randomized four-way crossover trial with nasal cavity dimension assessment

Abstract: Despite the promise of intranasal oxytocin (OT) for modulating social behavior, recent work has provided mixed results. This may relate to suboptimal drug deposition achieved with conventional nasal sprays, inter-individual differences in nasal physiology and a poor understanding of how intranasal OT is delivered to the brain in humans. Delivering OT using a novel ‘Breath Powered' nasal device previously shown to enhance deposition in intranasal sites targeted for nose-to-brain transport, we evaluated dose-dep… Show more

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Cited by 86 publications
(103 citation statements)
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References 85 publications
(105 reference statements)
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“…For example, the most effective nasal spray dose to use is still not known. In fact, we have found that a smaller dose may be more helpful than a larger dose [6] -bigger may not be better! Scientists are also still discovering exactly how oxytocin given through the nose might travel to the brain.…”
Section: What Else Do We Still Need To Learn About Oxytocin Nasal Spray?mentioning
confidence: 86%
See 1 more Smart Citation
“…For example, the most effective nasal spray dose to use is still not known. In fact, we have found that a smaller dose may be more helpful than a larger dose [6] -bigger may not be better! Scientists are also still discovering exactly how oxytocin given through the nose might travel to the brain.…”
Section: What Else Do We Still Need To Learn About Oxytocin Nasal Spray?mentioning
confidence: 86%
“…The way that oxytocin is sprayed up the nose also influences its effects. The most commonly used nasal spray devices may not be the best method to deliver oxytocin, and new types of sprays that are better for delivering oxytocin to the brain are currently being tested [6]. Overall, it is clear that more work is needed to understand all the factors that influence the response to nasally delivered oxytocin.…”
Section: What Else Do We Still Need To Learn About Oxytocin Nasal Spray?mentioning
confidence: 99%
“…Yes, as I mentioned briefly earlier, we've published a study in healthy volunteers in Phase I studies, where we had an intravenous oxytocin comparison [14,15]. Here we had a placebo and two different doses of oxytocin delivered to the volunteers using our device.…”
Section: How Does Optinose Delivery Technology Hope To Overcome the Dmentioning
confidence: 99%
“…We delivered oxytocin via the intranasal and also the intravenous route as a comparison [14,15]. Despite similar levels in the blood, significant differences in cognitive tests and corresponding brain activation were observed.…”
Section: How Does Optinose Delivery Technology Hope To Overcome the Dmentioning
confidence: 99%
“…38,39 A single administration of intranasal 8IU oxytocinmodulated social cognition, whereas intravenous administration did not, despite comparable peripheral blood concentrations of oxytocin after intranasal and intravenous oxytocin administration. 40 This indicates that nose-to-brain transport, rather than transport across the blood-brain barrier via peripherally circulating oxytocin, influences social cognition. Moreover, neural evidence from the same data set also suggested that intranasal 8IU (but not the other oxytocin treatments) reduced amygdala activation during the presentation of social stimuli.…”
Section: Introductionmentioning
confidence: 99%