Rat study: maternal diabetes and high-fat diet across two generations
In rats, maternal diabetes and a high-fat diet were linked to changes in pancreatic islet cells in female offspring and their newborns; this is animal research, not evidence about human lifespan. [1]
Automatic summary · not editorially reviewed
The key findings
Female Sprague-Dawley rats were divided into four groups of ten by maternal diabetes status and standard or high-fat diet. [1]
Offspring of diabetic dams on the high-fat diet had 14.5% fewer glucagon-positive cells than the other groups. [1]
The authors suggest maternal diabetes, regardless of high-fat diet, may predispose female offspring to pancreatic dysfunction and metabolic disease risk. [1]
The source at a glance
- Study type / format
- Animal study (rat), abstract only
- Population / context
- Female Sprague-Dawley rats (F1) and their offspring (F2), grouped by maternal diabetes status and diet.
- Summary based on
- Study abstract
- Original publication
- October 8, 2026
Rat dams, diet and diabetes groups
Female Sprague-Dawley rats (F1) were split into four groups of ten: offspring of non-diabetic dams on a standard diet, offspring of non-diabetic dams on a high-fat diet, offspring of diabetic dams on a standard diet, and offspring of diabetic dams on a high-fat diet. At postnatal day 90, in adulthood, these F1 females were mated and euthanized on gestational day 21 so their pancreases could be collected for immunochemistry and morphological analysis. Their offspring (F2) were also obtained for pancreatic evaluation.
Supporting source [1]
Islet cell changes in F1 and F2 offspring
Offspring of diabetic dams on the high-fat diet showed 14.5% fewer glucagon-positive cells than the other groups. Compared with offspring of non-diabetic dams on the standard diet, the high-fat-diet group, the diabetic-dam standard-diet group and the diabetic-dam high-fat-diet group had more somatostatin-positive cells (43.8%), more cleaved caspase-3-positive cells (30.2%) and more 4-HNE-positive cells (over 100%), plus fewer Ki-67-positive cells. Newborns of non-diabetic dams on the high-fat diet had higher proportions of insulin-, glucagon- and somatostatin-positive cells than newborns of the other dams.
Supporting source [1]
What the rat findings can and cannot show
The authors conclude that maternal diabetes, regardless of high-fat diet exposure, may predispose female offspring to future pancreatic dysfunction and a higher risk of metabolic disease, and they highlight a sex-specific vulnerability of females to transgenerational programming. These are associations in rats, not proof of cause in humans, and the abstract does not report human data or lifespan outcomes. Only the abstract was reviewed; the full text was not reviewed.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. This is a rat study with no human data or lifespan outcomes reported, and the findings are associations, not proof of cause.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Gallego FQ, Barco VS, Sinzato YK, Paula VG, de Souza MR, da Cruz LL, Corrente JE, Volpato GT, Damasceno DC. · europepmc.org · October 8, 2026