Exercise mimetic
An exercise mimetic is a drug that mimics some of the biological effects of physical exercise. Exercise is known to have an effect in preventing, treating, or ameliorating the effects of a variety of serious illnesses, including cancer, type 2 diabetes, cardiovascular disease, and psychiatric and neurological diseases such as Alzheimer's disease. As of 2021, no drug is known to have the same benefits.
Known biological targets affected by exercise have also been targets of drug discovery, with limited results. These known targets include:
| Targets | Drug candidates |
|---|---|
| irisin | |
| brain-derived neurotrophic factor | |
| interleukin-6 | |
| peroxisome proliferator-activated receptor delta | GW501516 |
| PPAR gamma coactivator 1-alpha | |
| estrogen-related receptor γ/α | GSK4716 SLU-PP-332 |
| NFE2L2 | |
| Canonical transient receptor potential (TRPC) proteins | |
| Myostatin | myostatin inhibitors |
The majority of the effect of exercise in reducing cardiovascular and all-cause mortality cannot be explained via improvements in quantifiable risk factors, such as blood cholesterol. This further increases the challenge of developing an effective exercise mimetic. Moreover, even if a broad spectrum exercise mimetic were invented, it is not necessarily the case that its public health effects would be superior to interventions to increase exercise in the population.
Exogenous administration of cardiotrophin-1 (CT-1) in rodents has been found to mimic the beneficial effects of exercise on the heart in a rodent model of severe right-sided heart failure. CT-1 is under formal development for the treatment of reperfusion injury. It is or was also under development for treatment of acute kidney injury, diabetes mellitus, ischemia, liver failure, and obesity, but no recent development for these indications has been reported.