ArticlePloS one2012
Tissue-specific responses of IGF-1/insulin and mTOR signaling in calorie restricted rats.
Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
32 citing papers in PubMed, 45 citations in OpenAlex.
- Six-month Calorie Restriction in Overweight Individuals Elicits Transcriptomic Response in Subcutaneous Adipose Tissue That is Distinct From Effects of Energy Deficit.The journals of gerontology. Series A, Biological sciences and medical sciences · 2016Trial
- Intramuscular MAPK signaling following high volume and high intensity resistance exercise protocols in trained men.European journal of applied physiology · 2016Trial
- Dietary restriction in aging and longevity.Nature aging · 2026Review
- Caloric restriction modifies small RNA profiles and engages age-related molecular pathways in the CALERIE trial.iScience · 2026Article
- Sex-specific phosphoproteome responses to calorie restriction and insulin in skeletal muscle from older rats.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025Article
- Independent and combined effects of calorie restriction and AICAR on glucose uptake and insulin signaling in skeletal muscles from 24-month-old female and male rats.Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme · 2024Article
- Akt substrate of 160 kDa is essential for the calorie restriction-induced increase in insulin-stimulated glucose uptake by skeletal muscle of female rats.Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme · 2023Article
- Greater Phosphorylation of AMPK and Multiple AMPK Substrates in the Skeletal Muscle of 24-Month-Old Calorie Restricted Compared to Ad-Libitum Fed Male Rats.The journals of gerontology. Series A, Biological sciences and medical sciences · 2023Article
- Transcriptomic Effects of Healthspan-Promoting Dietary Interventions: Current Evidence and Future Directions.Frontiers in nutrition · 2021Review
- Effects of Acute Exercise Combined With Calorie Restriction Initiated Late-in-Life on Insulin Signaling, Lipids, and Glucose Uptake in Skeletal Muscle From Old Rats.The journals of gerontology. Series A, Biological sciences and medical sciences · 2020Article
- PTEN: A Thrifty Gene That Causes Disease in Times of Plenty?Frontiers in nutrition · 2020Article
- In vivo glucoregulation and tissue-specific glucose uptake in female Akt substrate 160 kDa knockout rats.PloS one · 2020Article
- Whole body glucoregulation and tissue-specific glucose uptake in a novel Akt substrate of 160 kDa knockout rat model.PloS one · 2019Article
- Reversing age-associated arterial dysfunction: insight from preclinical models.Journal of applied physiology (Bethesda, Md. : 1985) · 2018Review
- Article
- Early dietary restriction in rats alters skeletal muscle tuberous sclerosis complex, ribosomal s6 and mitogen-activated protein kinase.Nutrition research (New York, N.Y.) · 2018Article
- Effects of Calorie Restriction and Fiber Type on Glucose Uptake and Abundance of Electron Transport Chain and Oxidative Phosphorylation Proteins in Single Fibers from Old Rats.The journals of gerontology. Series A, Biological sciences and medical sciences · 2017Article
- Changes in muscle fiber contractility and extracellular matrix production during skeletal muscle hypertrophy.Journal of applied physiology (Bethesda, Md. : 1985) · 2017Article
- Inhibition of Akt2 phosphorylation abolishes the calorie restriction-induced improvement in insulin-stimulated glucose uptake by rat soleus muscle.Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme · 2016Article
- Inhibition of p38 mitogen-activated protein kinase signaling reduces fibrosis and lipid accumulation after rotator cuff repair.Journal of shoulder and elbow surgery · 2016Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
Abstract
Moderate calorie restriction (CR) (∼60% of ad libitum, AL, intake) has been associated with numerous favorable physiological outcomes in many species, and the insulin/IGF-1 and mTOR signaling pathways have each been proposed as potential mediators for many of CR's bioeffects. However, few studies have assessed the widely held idea that CR induces the down-regulation of the insulin/IGF-1 and/or mTOR pathways in multiple tissues. Accordingly, we analyzed the phosphorylation status of 11 key signaling proteins from the insulin/IGF-1 (IR(Tyr1162/1163), IGF-1R(Tyr1135/1136), IRS-1(Ser312), PTEN(Ser380), Akt(Ser473), GSK3α(Ser21), GSK3β(Ser9)) and mTOR (TSC2(Ser939), mTOR(Ser2448), P70S6K(Thr412), RPS6(Ser235/236)) pathways in 11 diverse tissues [liver, kidney, lung, aorta, two brain regions (cortex and cerebellum), and two slow-twitch and three fast-twitch skeletal muscles] from 9-month-old male AL and CR Fischer 344 x Brown Norway rats. The rats were studied under two conditions: with endogenous insulin levels (i.e., AL>CR) and with insulin infused during a hyperinsulinemic-euglycemic clamp so that plasma insulin concentrations were matched between the two diet groups. The most striking and consistent effect of CR was greater pAkt in 3 of the 5 skeletal muscles of CR vs. AL rats. There were no significant CR effects on the mTOR signaling pathway and no evidence that CR caused a general attenuation of mTOR signaling across the tissues studied. Rather than supporting the premise of a global downregulation of insulin/IGF-1 and/or mTOR signaling in many tissues, the current results revealed clear tissue-specific CR effects for the insulin signaling pathway without CR effects on the mTOR signaling pathway.
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What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.