Linear correlation between beta-cell mass and body weight throughout the lifespan in Lewis rats: role of beta-cell hyperplasia and hypertrophy.

Abstract excerpt

We determined the beta-cell replicative rate, beta-cell apoptosis, cross-sectional beta-cell area, and pancreatic beta-cell mass throughout the entire postweaning lifespan (months 1, 3, 7, 10, 15, and 20) of Lewis rats. Beta-cell replication was progressively reduced in the initial months of life but remained stable after month 7 (month 1, 0.99 +/- 0.10%; month 3, 0.24 +/- 0.04%; month 7, 0.12 +/- 0.02%; month...

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