The Sheekey Science Show – Circadian Rhythms

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Circadian rhythms and aging – it’s a 24/7 thing.

Lasting 24 hours, the circadian rhythm is a natural, endogenous cycle that regulates metabolic, physiological, behavioural and cellular activities. This is important for organismal survival.

Sheekey Science

The circadian rhythm is also be entrained and this is important for synchronising internal events with changes in environmental conditions (e.g sunlight). A robust circadian rhythm is associated with health, whilst circadian dysfunction is associated with disease.

Sheekey Science

This is evident from many mouse studies whereby either genetic disruption of “core-clock” components or by artificial manipulation of light/dark cycles that disrupt the circadian rhythm have been associated with shorter lifespans and advanced aging characteristics. Moreover, the robustness of the rhythm has been shown to decline in model organisms with age.

Sheekey Science

There is, therefore, a lot of interest in understanding how the circadian rhythm can be restored. However, another reason why understanding the circadian clock is important is that the daily changes in organismal activity may mean there could be ideal times of the day when interventions have the greatest effect whilst minimising side effects – this is the premise behind circadian medicine.

Sheekey Science

So we will first cover what is the circadian rhythm and what it does, we’ll then look at clock dysfunction and studies linking this with shorter lifespan and different diseases.

Sheekey Science

Then we’ll see how there is crosstalk between the core clock components and nutrient signalling pathways (mTOR/AMPK/Sirtuins) and finally see how this information could be exploited in circadian medicine, also known a chronotherapeutics.

 

Watch more Sheekey Science videos here.

Image credit: CardMapr.nl / Unsplash
Phil Newman
Editor-in-Chief Phil is Editor-in-Chief Longevity.Technology and founder of First Longevity which brings together international investors and Longevity start-ups.

In his career, Phil has held c-level management positions; applying his marketing and business development expertise into these tech sectors: Longevity; IoT; AI; Medical Devices; Biopharma; 3D Manufacturing; Smartgrid and Sustainability.

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