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What’s next?
Next, we tested if the mice would be sensitive to a second administration of the drug.
Although the second administration was higher than the first, it had less of an effect on the drugexperienced mice.
Therefore, it appears that after the first administration, the mice became tolerant to the drug.
This will be important to keep in mind for clinicians who have to administer this drug repeatedly to
A patient with partial anomalous pulmonary venous
connection presenting with pulmonary hypertension
Severe tricuspid regurgitation with dilation of the
RV and RA
Pressure gradient between RV and RA
Wang et al. J Med Case Rep. 2014; 14: 149.
Drug tolerance
Drug sensitivity was decreased
after a second higher dose in mice
Clinically relevant for patients
receiving repeated administrations
• Mice build drug tolerance
after a single administration
Future directions