Mianserin Treatment

Species: Nematode (Taxid: 6239)
Factor:
Manipulation: Diet Intervention, Drug treatment
Effect:

Mianserin a serotonin receptor antagonist (used as antidepressant in humans), can increase C. elegans lifespan when given only during adulthood. Lifespan extension is reduced or abolished by mutations that affect serontonin synthesis or serotonin reuptakte at synapses [14,16]. It requires a serontonin receptor and an octopamine receptor which are both inhibited by Mianserin. Mianserin plus DR increase lifespan only by 4% more than DR alone and totally failed to extend lifepan in eat-2(ad1116) mutants. However, mianserin does not appear to reduce food intake [14]. On average, mianserin increases lifespan by 31% by an optimal dose of 50 micromolar, but had little or no effect when given at 250 micromolar. Mianserin failes to increase the lifepsna of mutants lacking serotonin synthesis enzyme TPH-1 and causes a lifespan increase of only 13% in mutant lacking serontin reuptake transporter MOD-5. Mianserin does not increase lifepan of SER-4 or SER-4 mutants. Mianserin increases lifespan by31% when given throughout adulthood, but it only result in 10% lifespan extension when it was gieven beginning at adult day 5. Mianserin also failed to increase lifespan in liquid lifespan assay and in animals grown on solid agarose plates lacking ill-defined component of commoly used agar plates (agar and Bacto peptone). Mianserin increases lifespan of animlas grown at 20 but not at 25 degree Celsius [19686215].


References:
  • 19686215: A high-throughput screen for chemicals that increase the lifespan of Caenorhabditis elegans.




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