SynthesisInternational journal of molecular sciences2022
Human Placental Lactogen in Relation to Maternal Metabolic Health and Fetal Outcomes: A Systematic Review and Meta-Analysis.
Synthesis in International journal of molecular sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 3 of them syntheses 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
33 citing papers in PubMed, 3 syntheses or guidelines pooled it, 33 citations in OpenAlex.
- Placental hormones, IGF-1, and early-life growth: endocrine links between birth size and infant metabolic programming-a systematic review.European journal of pediatrics · 2026Pooled it
- Trimester-Specific Serum Lipid Profiles in Gestational Diabetes Mellitus: A Systematic Review, Meta-Analysis, and Meta-Regression.Medicina (Kaunas, Lithuania) · 2025Pooled it
- Prolactin in Pregnancies Affected by Pre-Existing Maternal Metabolic Conditions: A Systematic Review.International journal of molecular sciences · 2023Pooled it
- Role of adiponectin in gestational diabetes mellitus: advances in mechanistic insights and early predictive potential.Adipocyte · 2026Review
- Chemogenetic placental activation and proteomic extracellular vesicle signatures predict functional roles across pregnancy and postpartum.American journal of physiology. Endocrinology and metabolism · 2026Article
- Fatty acid regulation and phosphatidylethanolamine biosynthesis are important for hepatitis E virus replication.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Pregnancy and lactation as window to maternal cardiovascular health.American heart journal plus : cardiology research and practice · 2026Article
- VISFATIN: a novel modulator of placental endocrinology under physiological and pathological conditions-in vitro studies involving INSR, ERK1/2, and PKA signalling pathways.Scientific reports · 2026Article
- Review
- Altered Lipid Profile and Oxidative Stress During Pregnancy: Impact on the Fetus and Risk of Metabolic Disorders in Adulthood.International journal of molecular sciences · 2026Review
- Gestational Diabetes Mellitus in Singleton and Twin Pregnancies: A Comparison of Fetomaternal Outcomes.Diagnostics (Basel, Switzerland) · 2026Article
- Effects of prenatal maternal smoking on placental IGF-1, leptin, and HPL expression and breastfeeding practices.BMC pregnancy and childbirth · 2026Article
- Review
- Placental and fetal consequences of maternal selective serotonin reuptake inhibitor use: current evidence and unresolved questions.Frontiers in pharmacology · 2026Review
- The placental maturation inflection point: an integrative biological framework for understanding early-onset versus late-onset preeclampsia.Frontiers in endocrinology · 2026Review
- Neuroendocrine crosstalk between sex and metabolic hormones: mechanisms and implications across the female reproductive spectrum.Discover endocrinology and metabolism · 2026Review
- Imaging and Diagnostic Tools for Cetacean Mammary Gland Assessment: Challenges and Future Directions for Marine Mammal Pathology, Medicine and Research.Journal of mammary gland biology and neoplasia · 2025Review
- Growth Without GH: A Case Series and Literature Review.Journal of clinical medicine · 2025Review
- Maternal Gestational Diabetes Impairs Fetoplacental Insulin-Induced Vasodilation via AKT/eNOS Pathway and Reduces Placental Efficiency.International journal of molecular sciences · 2025Article
- Metabolic associations of human placental lactogen in pregnancies at high metabolic risk: An observational cohort study.Acta obstetricia et gynecologica Scandinavica · 2025Observational
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Human placental lactogen (hPL) is a placental hormone which appears to have key metabolic functions in pregnancy. Preclinical studies have putatively linked hPL to maternal and fetal outcomes, yet-despite human observational data spanning several decades-evidence on the role and importance of this hormone remains disparate and conflicting. We aimed to explore (via systematic review and meta-analysis) the relationship between hPL levels, maternal pre-existing and gestational metabolic conditions, and fetal growth. MEDLINE via OVID, CINAHL plus, and Embase were searched from inception through 9 May 2022. Eligible studies included women who were pregnant or up to 12 months post-partum, and reported at least one endogenous maternal serum hPL level during pregnancy in relation to pre-specified metabolic outcomes. Two independent reviewers extracted data. Meta-analysis was conducted where possible; for other outcomes narrative synthesis was performed. 35 studies met eligibility criteria. No relationship was noted between hPL and gestational diabetes status. In type 1 diabetes mellitus, hPL levels appeared lower in early pregnancy (possibly reflecting delayed placental development) and higher in late pregnancy (possibly reflecting increased placental mass). Limited data were found in other pre-existing metabolic conditions. Levels of hPL appear to be positively related to placental mass and infant birthweight in pregnancies affected by maternal diabetes. The relationship between hPL, a purported pregnancy metabolic hormone, and maternal metabolism in human pregnancy is complex and remains unclear. This antenatal biomarker may offer value, but future studies in well-defined contemporary populations are required.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.