Cited by 20Birth, Development, and HealthMitochondrial Function and PathologyCardiac Ischemia and Reperfusion

Age and Sex Influence Mitochondria and Cardiac Health in Offspring Exposed to Maternal Glucolipotoxicity

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Louwagie, Eli J., Larsen, Tricia D., Wachal, Angela L., Gandy, Tyler C.T., Eclov, Julie A., Rideout, Todd C., Kern, Katherine A., Cain, Jacob T. +3 more·2020·iScience

Abstract

Infants of diabetic mothers are at risk of cardiomyopathy at birth and myocardial infarction in adulthood, but prevention is hindered because mechanisms remain unknown. We previously showed that maternal glucolipotoxicity increases the risk of cardiomyopathy and mortality in newborn rats through fuel-mediated mitochondrial dysfunction. Here we demonstrate ongoing cardiometabolic consequences by cross-fostering and following echocardiography, cardiomyocyte bioenergetics, mitochondria-mediated turnover, and cell death following metabolic stress in aged adults. Like humans, cardiac function improves by weaning with no apparent differences in early adulthood but declines again in aged diabetes-exposed offspring. This is preceded by impaired oxidative phosphorylation, exaggerated age-related increase in mitochondrial number, and higher oxygen consumption. Prenatally exposed male cardiomyocytes have more mitolysosomes indicating high baseline turnover; when exposed to metabolic stress, mitophagy cannot increase and cardiomyocytes have faster mitochondrial membrane potential loss and mitochondria-mediated cell death. Details highlight age- and sex-specific roles of mitochondria in developmentally programmed adult heart disease.

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Crossref · 10.1016/j.isci.2020.101746

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  • Basal respiration in permeabilized cardiomyocytes from neonatal and 12-month-old offspring in the high-fat diet and STZ-induced diabetes model is similar.

    “While basal respiration in permeabilized cardiomyocytes from neonatal and 12-month-old offspring were similar, altered state 3 respiration was apparent in mitochondria from 12-month-old offspring, particularly when using complex I fuels as substrates [111].”

    From Recent Experimental Studies of Maternal Obesity, Diabetes during Pregnancy and the Developmental Origins of Cardiovascular Disease (2022) · cites this paper as [111]

    The Results section on permeabilized cardiomyocytes (page unavailable) reports differences in basal oxygen consumption at 12 months: it is higher in diet-exposed females and lower in diabetes-exposed males. It does not support a blanket statement that basal respiration is similar in neonatal and 12-month-old offspring; the Results also report a 70-fold developmental increase in basal respiration in control cardiomyocytes. (LLM, conf=0.78)

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  • In rat offspring of high-fat diet and STZ-induced diabetes dams aged up to 12 months, LV hypertrophy was not observed compared to controls.

    “While LV hypertrophy was not observed in these offspring compared to controls, female offspring exhibited some systolic dysfunction (e.g., reduced ejection fraction) without diastolic dysfunction [111].”

    From Recent Experimental Studies of Maternal Obesity, Diabetes during Pregnancy and the Developmental Origins of Cardiovascular Disease (2022) · cites this paper as [111]

    The Results section on cardiac mass (page unavailable) reports larger heart-to-body-weight ratios at birth, particularly in offspring exposed to both maternal high-fat diet and diabetes. It also reports significantly larger ratios in diet-exposed males at 12 months and says left ventricular mass followed a similar pattern. These findings contradict the unqualified claim that LV hypertrophy was not observed through 12 months. (LLM, conf=0.85)

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  • Maternal diabetes does not affect LV mass in 12-month-old offspring.

    “However, maternal diabetes did not affect the LV mass in 12-month-old offspring, though sex-specific effects on cardiac function were observed [111].”

    From Recent Experimental Studies of Maternal Obesity, Diabetes during Pregnancy and the Developmental Origins of Cardiovascular Disease (2022) · cites this paper as [111]

    The Results section on cardiac mass and function reports sex-specific functional effects at 12 months: diabetes-exposed females had poorer systolic function and males poorer diastolic function. It does not explicitly say that maternal diabetes had no effect on LV mass at that age; it says LV mass followed a pattern similar to heart mass, which changed differently by sex and exposure. Page numbers were not available in our copy. (LLM, conf=0.76)

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  • In the combined maternal obesity and late-gestation streptozotocin model, body weights as well as serum glucose and triacylglycerol levels were similar to the respective male and female offspring of controls.

    “Using this model, body weights as well as serum glucose and triacylglycerol levels were similar to the respective male and female offspring of controls [111].”

    From Recent Experimental Studies of Maternal Obesity, Diabetes during Pregnancy and the Developmental Origins of Cardiovascular Disease (2022) · cites this paper as [111]

    The Results section, “Metabolic Syndrome Does Not Explain Cardiac Disease,” reports similar weights across groups at 10 weeks and 6 months and similar circulating lipids at 3 weeks. But it also reports higher blood glucose in combination-exposed newborns and transiently higher triglycerides in exposed offspring at 10 weeks. Thus, the unqualified claim that all three measures were similar to controls is too broad. Page numbers are unavailable in our copy. (LLM, conf=0.87)

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  • Male offspring of diabetic dams exhibit reduced diastolic function without systolic impairments compared to controls.

    “Male offspring exhibited reduced diastolic function without systolic impairments, while female offspring exhibited systolic dysfunction, but not diastolic dysfunction, compared to controls [111].”

    From Recent Experimental Studies of Maternal Obesity, Diabetes during Pregnancy and the Developmental Origins of Cardiovascular Disease (2022) · cites this paper as [111]

    The Results section on cardiac function reports that at 12 months, diabetes-exposed males had poorer diastolic function, while females had poorer systolic function. The claim omits that age qualifier: the same section reports poorer systolic and diastolic function in exposed newborns, with maternal diabetes particularly affecting systolic function in males. (LLM, conf=0.86)

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Authors
Louwagie, E. J., Larsen, T. D., Wachal, A. L., Gandy, T. C. T., Eclov, J. A., Rideout, T. C., Kern, K. A., Cain, J. T., Anderson, R. H., Mdaki, K. S., & Baack, M. L.
Affiliations
  • University of South Dakota (US)
  • Sanford Research (US)
  • University at Buffalo, State University of New York (US)
  • Sanford Health (US)
Corresponding author
  • Louwagie, Eli J.
  • Baack, Michelle L.
Venue
iScience
Publisher
Elsevier BV
Published
2020-11
Volume
23
Issue
11
Pages
101746
ISSN
2589-0042 (ISSN-L)
OpenAlex
W3097288581
Cited by
20
References
87
Citations by year
2026: 1 · 2025: 4 · 2024: 4 · 2023: 4 · 2022: 4 · 2021: 3
FWCI
2.64
Type
journal article
Language
en
Open access
Locations
  • iScience (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • National Institute of General Medical Sciences
  • National Science Foundation
  • National Institute of Child Health and Human Development
  • National Center for Complementary and Integrative Health
Topics
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Birth, Development, and Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
Keywords
diabetes in pregnancy, cardiomyopathy, mitochondrial dysfunction, mitophagy, oxidative phosphorylation, mitochondrial turnover, mitochondrial membrane potential, metabolic stress, mitochondrial cell death, sex differences, cross-fostering

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