Fight Aging! Newsletter, November 4th 2019
In this study, we hypothesized that moderately and chronically reducing ACh could attenuate the deleterious effects of aging on NMJs and skeletal muscles. To test this hypothesis, we analyzed NMJs and muscle fibers from heterozygous transgenic mice with reduced expression of the vesicular ACh transporter (VAChT), VKDHet mice, which present with approximately 30% less synaptic ACh compared to control mice. Because ACh is constitutively decreased in VKDHet, we first analyzed developing NMJs and muscle fibers. We found no obvious morphological or molecular differences between NMJs and muscle fibers of VKDHet and control mice during development. In contrast, we found that moderately reducing ACh has various effects on adult NMJs and muscle fibers. VKDHet mice have significantly larger NMJs and muscle fibers compared to age-matched control mice. They also present with reduced expression of the pro-atrophy gene, Foxo1, and have more satellite cells in skeletal muscles. These molecular and cellular features may partially explain the increased size of NMJs and muscle fibers. Thus, moderately reducing ACh may be a therapeutic strategy to prevent the loss of skeletal muscle mass that occurs with advancing age. Low Dose Quercetin as a Geroprotector in Mice https://www.fightaging.org/archives/2019/10/low-dose-quercetin-as-a-geroprotector-in-mice/ Quercetin is used in combination with dasatinib as a senolytic treatment capable of selectively destroying senescent ...
ConclusionsE-cigarette use should be assessed and monitored to understand the safety and potential efficacy of e-cigarettes as a harm reduction approach for HF patients.
Condition: Malignant Neoplasm Interventions: Drug: Fentanyl Sublingual Spray; Drug: Morphine; Other: Physical Performance Testing; Other: Placebo; Other: Quality-of-Life Assessment; Other: Questionnaire Administration Sponsors: M.D. Anderson Cancer Center; National Cancer Institute (NCI) Not yet recruiting
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