ReviewActa physiologica (Oxford, England)2024
Regulation of placental amino acid transport in health and disease.
Review in Acta physiologica (Oxford, England), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
21 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Placental expression and activity of system A and system L amino acid transporters in pregnancies complicated by diabetes mellitus and fetal growth disorders: a systematic review.Frontiers in endocrinology · 2026Pooled it
- Amino Acid Metabolism in Health and Disease.MedComm · 2026Review
- Sexual Dimorphism in Placental mTORC1 Signaling, Amino Acid Transport, and Mitochondrial Respiration at Term.Antioxidants (Basel, Switzerland) · 2026Article
- Metabolic Reprogramming at the Maternal-Fetal Interface: Insights from Decidual Stromal Cells and Trophoblasts in Healthy Pregnancy Versus Recurrent Pregnancy Loss.International journal of molecular sciences · 2026Review
- Metabolic imprinting in trophoblast barrier dysfunction: the role of glucolipotoxicity, endoplasmic reticulum stress, and amino acid transport imbalance.Journal of assisted reproduction and genetics · 2026Review
- Targeted Intracellular Delivery of Amino Acids to Trophoblast Cells Reveals Proteomic Signatures of Cellular Utilisation.Biomolecules · 2026Article
- Amino Acid Dysregulation in the Mother-Fetus Unit: Multi-Compartment Metabolomic Signatures of Gestational Diabetes Mellitus and Fetal Macrosomia.International journal of molecular sciences · 2026Article
- Review
- Natural variation in transplacental transfer efficiency exposes distinct transcriptional network architectures of PFAS effects on birth weight and gestational age.bioRxiv : the preprint server for biology · 2026Article
- Abnormal Galectin Signaling in the Pathomechanisms of Placental Dysfunction in Gestational Diabetes Mellitus.International journal of molecular sciences · 2026Review
- Plasma amino acids in early pregnancy and fetal growth trajectories across pregnancy: findings from a multi-racial U.S. pregnancy cohort.European journal of nutrition · 2026Observational
- Metabolomic insights: LC-MS profiling of human placental tissue from SSRI-treated pregnancies.European journal of medical research · 2026Article
- The effects of placental amino acid transporter gene expression and lamb development in primiparous versus multiparous Awassi ewes.Frontiers in veterinary science · 2026Article
- Unraveling the complex web: pathogenesis and prevention of gestational diabetes mellitus-related fetal overgrowth.Frontiers in cell and developmental biology · 2026Review
- Folic acid ameliorates placental structure and function in fetal growth restriction via epigenetic modifications.Clinical epigenetics · 2025Article
- The Effect of Prenatal Dexamethasone Exposure on Placental Morphology and Function at Different Stages, Doses, and Courses In Mice.Reproductive sciences (Thousand Oaks, Calif.) · 2025Article
- Placental mTOR signalling links mitochondrial dysfunction, nutrient transport and neonatal beta cell perturbations in mice.Diabetologia · 2025Article
- Epigenetic mechanisms in maternal-fetal crosstalk: inter- and trans-generational inheritance.Epigenomics · 2025Review
- The human placenta and its role in reproductive outcomes revisited.Physiological reviews · 2025Review
- Preliminary Analysis of Placental DNA Methylation Profiles in Piglets with Extreme Birth Weight Variations.Animals : an open access journal from MDPI · 2025Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
Abnormal fetal growth, i.e., intrauterine growth restriction (IUGR) or fetal growth restriction (FGR) and fetal overgrowth, is associated with increased perinatal morbidity and mortality and is strongly linked to the development of metabolic and cardiovascular disease in childhood and later in life. Emerging evidence suggests that changes in placental amino acid transport may contribute to abnormal fetal growth. This review is focused on amino acid transport in the human placenta, however, relevant animal models will be discussed to add mechanistic insights. At least 25 distinct amino acid transporters with different characteristics and substrate preferences have been identified in the human placenta. Of these, System A, transporting neutral nonessential amino acids, and System L, mediating the transport of essential amino acids, have been studied in some detail. Importantly, decreased placental Systems A and L transporter activity is strongly associated with IUGR and increased placental activity of these two amino acid transporters has been linked to fetal overgrowth in human pregnancy. An array of factors in the maternal circulation, including insulin, IGF-1, and adiponectin, and placental signaling pathways such as mTOR, have been identified as key regulators of placental Systems A and L. Studies using trophoblast-specific gene targeting in mice have provided compelling evidence that changes in placental Systems A and L are mechanistically linked to altered fetal growth. It is possible that targeting specific placental amino acid transporters or their upstream regulators represents a novel intervention to alleviate the short- and long-term consequences of abnormal fetal growth in the future.
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Registered trials
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