Chemistry:Rolipram
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| Bioavailability | 75%[1] |
| Metabolism | Liver via CYP2C8, CYP2C9, CYP2C19 and CYP2D6[1] |
| Elimination half-life | 3 hours[1] |
| Excretion | Urine (80%)[1] |
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| Formula | C16H21NO3 |
| Molar mass | 275.348 g·mol−1 |
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Rolipram is a selective phosphodiesterase-4 inhibitor discovered and developed by Schering AG as a potential antidepressant drug in the early 1990s.[2] It served as a prototype molecule for several companies' drug discovery and development efforts.[3]:668ff Rolipram was discontinued after clinical trials showed that its therapeutic window was too narrow; it could not be dosed at high enough levels to be effective without causing significant gastrointestinal side effects.[3]:668
Rolipram has several activities that make it a continuing focus for research. The etiology of many neurodegenerative diseases involves misfolded and clumped proteins which accumulate in the brain. Cells have a mechanism to dispose of such proteins called the proteasome. However, in Alzheimer's disease and some other conditions the activity of these proteasomes is impaired leading to a buildup of toxic aggregates. Research in mice suggests that rolipram has the ability to ramp up the activity of proteasomes and reduce the burden of these aggregates. Preliminary evidence suggests that this can improve spatial memory in mice engineered to have aggregate build-up.[4] Rolipram continues to be used in research as a well-characterized PDE4 inhibitor.[3]:669 It has been used in studies to understand whether PDE4 inhibition could be useful in autoimmune diseases,[5] Alzheimer's disease,[6] cognitive enhancement,[7] spinal cord injury,[8] and respiratory diseases like asthma and COPD.[9]
See also
References
- ↑ 1.0 1.1 1.2 1.3 "Pharmacokinetics of (+)-rolipram and (-)-rolipram in healthy volunteers". European Journal of Clinical Pharmacology 38 (1): 71–75. 1990. doi:10.1007/BF00314807. PMID 2328751.
- ↑ "The antidepressant and antiinflammatory effects of rolipram in the central nervous system". CNS Drug Reviews 7 (4): 387–398. Winter 2001. doi:10.1111/j.1527-3458.2001.tb00206.x. PMID 11830756.
- ↑ 3.0 3.1 3.2 "Chapter 33: Medicinal Chemistry of PDE4 Inhibitors.". Cyclic Nucleotide Phosphodiesterases in Health and Disease. CRC Press. December 2006. ISBN 9781420020847.
- ↑ "Tau-driven 26S proteasome impairment and cognitive dysfunction can be prevented early in disease by activating cAMP-PKA signaling". Nature Medicine 22 (1): 46–53. January 2016. doi:10.1038/nm.4011. PMID 26692334.
- ↑ "Phosphodiesterase 4-targeted treatments for autoimmune diseases". BMC Medicine 11 (1): 96. April 2013. doi:10.1186/1741-7015-11-96. PMID 23557064.
- ↑ "Phosphodiesterases as therapeutic targets for Alzheimer's disease". ACS Chemical Neuroscience 3 (11): 832–844. November 2012. doi:10.1021/cn3000907. PMID 23173065.
- ↑ "Neuroenhancement: status quo and perspectives". European Archives of Psychiatry and Clinical Neuroscience 258 (Suppl 5): 110–114. November 2008. doi:10.1007/s00406-008-5022-2. PMID 18985306.
- ↑ "The role of cyclic AMP signaling in promoting axonal regeneration after spinal cord injury". Experimental Neurology 209 (2): 321–332. February 2008. doi:10.1016/j.expneurol.2007.06.020. PMID 17720160.
- ↑ "Phosphodiesterase 4 inhibitors for the treatment of asthma and COPD". Current Medicinal Chemistry 13 (27): 3253–3262. 2006. doi:10.2174/092986706778773040. PMID 17168849.
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