FlyBase curator comment: this entry represents a transgenic construct where the particular construct used cannot be determined.
Hearts expressing MhcdsRNA.Scer\UAS.cUa under the control of Scer\GAL4HCH.Hand show prolonged systolic and diastolic intervals and increased diastolic and in particular systolic diameters resulting in reduced cardiac contractility compared with wild-type. In addition, these hearts display a dramatic increase in cardiac arrhythmia due to increased asystoly events.
Myofibrillar disorganization is apparent in hearts expressing MhcdsRNA.Scer\UAS.cUa under the control of Scer\GAL4HCH.Hand compared with wild-type hearts.