# How does IGF-1 LR3 support ATP levels in diabetic neurons?

Canonical source: https://retacompare.com/research/how-does-igf-1-lr3-support-atp-levels-in-diabetic-neurons

Peptide Longevity Q&A · 2021-07-01


    Research indicates that IGF-1 LR3 significantly elevates ATP levels in sensory neurons derived from diabetic rats. This effect is attributed to improvements in glycolytic capacity and mitochondrial respiration, which are compromised in diabetic conditions.

 What the research shows

The study investigated the effects of IGF-1 on sensory neurons derived from diabetic rats, specifically focusing on the energy provision via glycolysis and mitochondrial respiration. Researchers utilized dorsal root ganglion (DRG) neurons from both control and streptozotocin (STZ)-induced type 1 diabetic rats to assess ATP levels in real time. The analysis involved transfecting neurons with plasmids containing ATP biosensors and employing the Seahorse XF analyzer for measuring glycolytic and mitochondrial respiration parameters. The findings revealed that DRG neurons from diabetic rats exhibited significantly lower ATP levels, glycolytic capacity, and mitochondrial function compared to control neurons. Importantly, treatment with IGF-1 resulted in marked improvements across these parameters, suggesting a protective role against energy deficits in diabetic neuropathy.

 Why it matters for longevity

Maintaining energy homeostasis in neurons is crucial for preventing neurodegeneration, particularly in conditions like diabetes that are characterized by impaired energy metabolism. The ability of IGF-1 LR3 to enhance ATP levels and restore glycolytic function may have implications for age-related neurodegenerative diseases. As aging is associated with a decline in mitochondrial function and energy production, interventions that improve these parameters could potentially extend healthspan and mitigate age-related cognitive decline. This research highlights the importance of metabolic support in neuronal health and suggests that IGF-1 LR3 might play a role in promoting longevity by safeguarding neuronal energy supply.

 Key findings at a glance

IGF-1 LR3 significantly elevated ATP levels in DRG neurons from diabetic rats.

Diabetic neurons showed reduced glycolytic capacity and mitochondrial respiration.

IGF-1 treatment improved energy metabolism parameters in diabetic neurons.

ATP levels were higher in cell bodies compared to axons in both control and diabetic neurons.

Oligomycin and 2-deoxy-d-glucose treatments decreased ATP levels, indicating reliance on glycolysis and oxidative phosphorylation.

 How IGF-1 LR3 works (background)

Insulin-like growth factor-1 (IGF-1) is a peptide that plays a significant role in cellular growth, development, and metabolism. In the context of neuronal health, IGF-1 has been shown to enhance glucose uptake and promote glycolysis, which is essential for ATP production. Additionally, IGF-1 can stimulate mitochondrial biogenesis and improve oxidative phosphorylation efficiency. These mechanisms are particularly relevant in diabetic conditions where energy metabolism is impaired. By increasing ATP levels and supporting mitochondrial function, IGF-1 LR3 may help maintain neuronal integrity and function, potentially contributing to longevity and improved healthspan.

 Safety, caveats, and what we don't yet know

While the research provides promising insights into the effects of IGF-1 LR3 on neuronal energy metabolism, it is important to recognize the limitations of the study. The findings are based on preclinical models using diabetic rats, and further research is needed to determine the applicability of these results to humans. Additionally, the long-term safety and efficacy of IGF-1 LR3 in various populations, particularly older adults or those with different health conditions, remain to be established. Future studies should explore the broader implications of IGF-1 LR3 for neuroprotection and longevity across diverse demographic groups.

 Bottom line

IGF-1 LR3 has been shown to significantly enhance ATP levels in sensory neurons derived from diabetic rats by improving glycolytic capacity and mitochondrial respiration. These findings suggest a potential role for IGF-1 LR3 in supporting neuronal health and longevity.

 Related questions

 Can IGF-1 LR3 enhance cognitive function in aging individuals?

Research suggests that IGF-1 may support cognitive function through its role in promoting neuronal health and energy metabolism, potentially mitigating age-related cognitive decline.

 What are the effects of IGF-1 LR3 on muscle regeneration?

IGF-1 LR3 has been shown to promote muscle regeneration by enhancing satellite cell proliferation and differentiation, which may be beneficial in aging populations.

 How does IGF-1 LR3 interact with other longevity peptides?

IGF-1 LR3 can synergistically work with other peptides to enhance metabolic function and cellular repair, although specific interactions and outcomes require further investigation.

 Source: PubMed · Mol Metab · published 2021-07-01.

## Sources

- PubMed · Mol Metab: https://pubmed.ncbi.nlm.nih.gov/33592336/