Research
Hormonal
PPAR gamma 2 is required for the adaptive beta-cell hyperplasia and hypertrophy that normally compensates for insulin resistance.
Beta cells can adapt to insulin resistance by increasing in number and size, but this adaptation requires specific molecular signals like PPARg2. Without these signals, beta cells fail to adapt, leading to diabetes even if insulin resistance itself is not the primary driver.
GoodSupportsHIGH confidence
Our data also indicate that PPARg2 may be required for the b-cell hypertrophic adaptive response to insulin resistance.
Why this rating
Supported by morphometric and functional analysis of pancreatic islets.
Source
PPAR gamma 2 Prevents Lipotoxicity by Controlling Adipose Tissue Expandability and Peripheral Lipid Metabolism
Gema Medina‐Gómez et al. · PLoS Genetics · 2007
DOI 10.1371/journal.pgen.0030064
mechanism_onlyCited 423×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Ablation of the PPAR gamma 2 isoform prevents adipose tissue expansion, leading to lipotoxicity, severe insulin resistance, and beta-cell failure despite reduced total fat mass.Good
- PPAR gamma 2 prevents lipotoxicity in non-adipose tissues (liver, muscle, pancreas) by facilitating the deposition of fat as harmless triacylglycerols (TAGs) instead of reactive lipid species like ceramides and diacylglycerols (DAGs).Good
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