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Related Concept Videos

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The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
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Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood...
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Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
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Cell division is necessary for growth and reproduction in organisms. Mitosis aids cell growth and development by dividing somatic cells. In contrast, meiosis causes the division of germ cells and plays an essential role in sexual reproduction. Due to their unique functional requirements, mitosis and meiosis differ from each other in multiple aspects.
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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
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Related Experiment Video

Updated: Jan 14, 2026

Author Spotlight: Collecting the Brain and Serum from the Same Mice Fetus to Study Brain Tumor Development
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Can maternal metformin protect the developing fetal brain?

Claudia Ibarra1, Baharan Fekry1, Lierni Ugartemendia1

  • 1Department of Obstetrics, Gynecology, & Reproductive Sciences, Division of Maternal-Fetal Medicine, UTHealth, Houston, TX.

American Journal of Obstetrics and Gynecology
|October 23, 2025
PubMed
Summary
This summary is machine-generated.

Maternal metformin treatment during pregnancy increased fetal brain Sirtuin-1 levels, a biomarker associated with neuroprotection and healthy brain development. This finding suggests potential benefits of metformin for fetal brain health in mothers with diabetes.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Pharmacology

Background:

  • Maternal diabetes increases risks for autism spectrum disorder and attention-deficit hyperactivity disorder in offspring.
  • Metformin shows emerging neuroprotective potential in preclinical and clinical studies.
  • Fetal neuronally derived extracellular vesicles offer a non-invasive window into fetal neurodevelopment.

Purpose of the Study:

  • To investigate the effects of maternal metformin treatment on fetal brain health biomarkers.
  • To assess Sirtuin-1, tumor necrosis factor-alpha, and Bcl-2-associated X protein levels in fetal neuronally derived extracellular vesicles.

Main Methods:

  • A nested case-control study analyzed maternal serum from a metformin vs. insulin trial for diabetes in pregnancy.
  • Fetal neuronally derived extracellular vesicles were isolated and key protein biomarkers quantified.
  • Correlation between vesicle and fetal brain tissue biomarker concentrations was validated.

Main Results:

  • Maternal metformin use was associated with a significant increase (39%) in fetal brain Sirtuin-1 levels within extracellular vesicles.
  • No significant differences were found for other assessed biomarkers (tumor necrosis factor-alpha, Bcl-2-associated X protein).
  • Vesicle Sirtuin-1 levels strongly correlated with fetal brain tissue concentrations, validating their use as a proxy.

Conclusions:

  • Maternal metformin treatment positively impacts fetal brain development by increasing Sirtuin-1, supporting neuronal differentiation and preventing mitochondrial loss.
  • Sirtuin-1 plays a crucial role in cognitive function and brain plasticity.
  • Findings inform the risk-benefit analysis of metformin use in pregnant women with diabetes.