We can’t show the full text here under this license. Use the link below to read it at the source.
The duper mutation reveals previously unsuspected functions of Cryptochrome 1 in circadian entrainment and heart disease
The duper mutation reveals new roles of Cryptochrome 1 in body clock adjustment and heart disease
AI simplified
Abstract
Duper mutant hamsters re-entrain locomotor rhythms three times as fast as wild-type hamsters following light:dark cycle advances.
- Duper mutant hamsters have a short free-running period in constant darkness and exhibit large phase shifts to brief light pulses.
- The accelerated observed in duper hamsters is not linked to an amplified phase-response curve as seen in mice.
- Both duper hamsters and mice show faster re-entrainment compared to wild types, but mice do not exhibit amplified responses to light.
- The phenotype of accelerated re-entrainment in duper mutants remains despite lengthening the circadian period by drinking heavy water.
- Duper mutation shortens the lifespan of cardiomyopathic hamsters, yet this effect is negated with regular 8-hour phase shifts.
- Findings suggest complex interactions between phase shifting, longevity, and heart disease in the context of circadian disruption.
AI simplified
Key numbers
3×
Rate Increase
Duper hamsters re-entrain at least 3 times faster than wild types.
224 d vs. 335 d
Lifespan Comparison
Median age of death for duper hamsters vs. wild types.