@Mangan150 @jasonmpeirce @naval Nice. "Leontieva et al recently showed that a once-weekly treatment with rapamycin extends lifespan in high fat-fed mice without altering glucose or insulin levels" https://t.co/n97GkGz0Qy So it's fast mimicking? https://t.co/Ze3vNPE7cu Fun.
Fasting increases human skeletal muscle net phenylalanine release and this is associated with decreased mTOR signaling.
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Apr 2021 – Sep 2025Where it's discussed
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X / Twitter6 posts
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YouTube4 videos
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News2 articles
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What people are saying
Overall, the discussions show a scientific curiosity about molecular mechanisms such as mTOR signaling and autophagy, with some posts referencing specific experimental results like unchanged protein degradation markers or decreased mTOR phosphorylation. The tone ranges from casual fun to scientific curiosity, indicating moderate engagement and interest in the study's implications.
Most posts imply some level of agreement with the significance of the findings, such as the mention of
Discussions reflect moderate interest, with some posts exploring mechanistic details like mTOR and autophagy but not deeply delving into broader implications.
Posts reference specific molecular markers like MAFbx, MURF1, LC3B-II, and mTOR phosphorylation, indicating active engagement.
The discussion around lifespan extension and fast-mimicking treatments suggests awareness of potential impact, though not universally emphasized.
Abstract in brief
- Fasting for 72 hours leads to increased release of phenylalanine from skeletal muscle and a significant reduction in mTOR activity, which is crucial for cell growth and protein synthesis.
- The study found that fasting decreased the phosphorylation of mTOR and downstream targets like 4EBP1, ULK1, and rpS6, indicating suppressed muscle protein synthesis and increased autophagy, while no change was observed in muscle protein breakdown markers.
- These findings suggest that extended fasting causes muscle protein loss by decreasing mTOR signaling and autophagy regulation, contributing to the overall loss of body proteins during fasting.]
Top posts
Most liked on X and Bluesky@JScholar נכון שהמחקרים הזמינים קצרי טווח, אבל מה שוודאי הוא ש TRE מפחית אינסולין, גלוקוז וחומצות אמינו רגולטרים של mTOR. בנוסף IGF-1 (עוד פרוקסי ל mTOR) נמוך שיטתית באוכלוסיות שלא צורכות הרבה חלבון מהחי. אין טענה ל״ניסים״, אלא שזו פרקטיקה פשוטה ויעילה בכיוון חיובי. https://t.co/qxnncqsOEo
@kagashin_sub 糖新生の分はあるが、水のみ48時間断食でも特に分解が活性化されているわけでもなさそう "MAFbx and MURF1 ubiquitin ligases remained unaltered after fasting indicating no change in protesomal protein degradation." https://t.co/MI0cAlOpGR
@miklosch @Manni75057232 https://t.co/uAjBlPRMb4
@NarfGb mTOR phosphorylation was decreased by ∼50% following fasting, https://t.co/r5wrHRIiTJ
Autophagy initiation is in part regulated by mTOR through ULK1 and fasting increased expression of the autophagic marker LC3B-II by ∼30%." 2/ https://t.co/AKg3eumMJZ
All mentions
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@JScholar נכון שהמחקרים הזמינים קצרי טווח, אבל מה שוודאי הוא ש TRE מפחית אינסולין, גלוקוז וחומצות אמינו רגולטרים של mTOR. בנוסף IGF-1 (עוד פרוקסי ל mTOR) נמוך שיטתית באוכלוסיות שלא צורכות הרבה חלבון מהחי. אין טענה ל״ניסים״, אלא שזו פרקטיקה פשוטה ויעילה בכיוון חיובי. https://t.co/qxnncqsOEo
@kagashin_sub 糖新生の分はあるが、水のみ48時間断食でも特に分解が活性化されているわけでもなさそう "MAFbx and MURF1 ubiquitin ligases remained unaltered after fasting indicating no change in protesomal protein degradation." https://t.co/MI0cAlOpGR
@NarfGb mTOR phosphorylation was decreased by ∼50% following fasting, https://t.co/r5wrHRIiTJ
Autophagy initiation is in part regulated by mTOR through ULK1 and fasting increased expression of the autophagic marker LC3B-II by ∼30%." 2/ https://t.co/AKg3eumMJZ
@miklosch @Manni75057232 https://t.co/uAjBlPRMb4
@Mangan150 @jasonmpeirce @naval Nice. "Leontieva et al recently showed that a once-weekly treatment with rapamycin extends lifespan in high fat-fed mice without altering glucose or insulin levels" https://t.co/n97GkGz0Qy So it's fast mimicking? https://t.co/Ze3vNPE7cu Fun.
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