Peptides DB
Research-centric peptide and protocol reference hub

Research library

Every indexed study on every peptide in the database, with a machine summary and the numbers that matter pulled out. Filter on the left; the register updates as you go.

2545studies indexed1158with human data159registered trials2232carry a numeric findingLibrarian added 0 studies today
Showing 27 studiesSortNewest indexed ▾
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Integrating in vivo metabolism, pharmacokinetics, and dual-indicator scoring for PK-marker selection of Celosiae Semen saponins.
L-Carnitine (Levocarnitine) · Journal of pharmaceutical and biomedical analysis · 2026 · Observational · Preclinical
The study identified celosin I as the optimal pharmacokinetic marker for total saponins from Celosiae Semen, with significant effects observed in vitro and in a zebrafish model, but clinical relevance in humans remains unproven.
AUC₀-∞ was 215.45 μg·min/mL.
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Integrative single-cell and bulk transcriptome analyses reveal a carnitine-related prognostic signature and fibroblast plasticity in HNSCC
L-Carnitine (Levocarnitine) · biorxiv-preprint · 2026 · Observational
This study constructed a six-gene risk model based on carnitine-related genes for predicting outcomes in head and neck squamous cell carcinoma, with some associations to immune cell infiltration.
The risk model achieved 1-, 3-, and 5-year AUC values of 0.65, 0.66, and 0.65 in the training set.
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Revealing potential biomarkers and metabolic mechanisms of ovarian aging in hens during late laying period based on machine learning and metabolomics.
L-Carnitine (Levocarnitine) · Comparative biochemistry and physiology. Part D, Genomics & proteomics · 2026 · Observational
This study identifies long-chain acylcarnitines as potential biomarkers for ovarian aging in hens, which could help in understanding reproductive performance in poultry.
Not reported in abstract.
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Effects of rumen fluid transplantation on longissimus dorsi muscle development in Xizang sheep: An association analysis based on transcriptomic and serum metabolomic profiles.
L-Carnitine (Levocarnitine) · Comparative biochemistry and physiology. Part D, Genomics & proteomics · 2026 · Observational
Rumen fluid transplantation may enhance muscle lightness and fiber characteristics in Xizang sheep, but the underlying mechanisms require further study.
Not reported in abstract.
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Environmental risk factors for false-positive results in newborn screening for primary carnitine deficiency: a multicenter large-scale retrospective cohort study.
L-Carnitine (Levocarnitine) · The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2026 · Observational · n=104451
Environmental conditions, especially temperature, can significantly impact newborn screening results for primary carnitine deficiency, leading to high false-positive rates.
False-positive rate was 94.0% (735/782).
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Gestational diabetes mellitus induces sex-specific neonatal metabolomic signatures associated with early metabolic programming
L-Carnitine (Levocarnitine) · biorxiv-preprint · 2026 · Observational
Intrauterine exposure to gestational diabetes mellitus results in distinct metabolic signatures in newborns, which differ by sex. These findings may help identify infants at risk due to maternal hyperglycemia.
AUC of 0.810 (95% CI: 0.636–0.920) in males for distinguishing GDM-exposed from healthy infants.
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Divergent fasting lactate responses are associated with serum multi-omics remodelling after 14-week high-intensity interval training in type 2 diabetes
L-Carnitine (Levocarnitine) · biorxiv-preprint · 2026 · Observational
Fasting lactate responses after HIIT in T2DM patients show significant variability, indicating that individual metabolic adaptations can differ widely and may not align with conventional glycaemic improvements.
Fasting lactate in T2DM patients was 1.72 ± 0.70 mmol/L vs 1.06 ± 0.57 mmol/L in non-T2DM controls, P < 0.001.
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Novel in vivo measurement of muscle total carnitine concentration reveals potential mechanism linking mitochondrial dysfunction and lipid accumulation
L-Carnitine (Levocarnitine) · biorxiv-preprint · 2026 · Observational
This study introduces a new non-invasive method to measure muscle carnitine levels, showing lower concentrations in patients with mitochondrial disease, which correlates with dysfunction and lipid accumulation.
1.9-fold difference in total carnitine concentration within one muscle group due to orientation correction.
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Contrasting dietary patterns remodel gut microbial function and generate multi-omic signatures associated with cardiometabolic markers.
L-Carnitine (Levocarnitine) · Gut microbes · 2026 · RCT · n=34
This study suggests that different dietary patterns can influence gut microbiome function and metabolic markers, but further research is needed to confirm these findings in larger populations.
91.7% held-out accuracy for dietary response discrimination, permutation p=0.005.
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Expanded Hemodialysis Using a Medium Cut-Off Dialyzer for Severe Valproic Acid Poisoning: A Case Report with Real-Time Therapeutic Drug Monitoring.
L-Carnitine (Levocarnitine) · europepmc · 2023 · Case report · n=1
This case suggests that intermittent hemodialysis with a medium cut-off dialyzer can effectively reduce valproic acid levels in severe poisoning cases, but further studies are needed to confirm these findings.
VPA decreased to 97.81 µg/mL at 4 h (62.8% reduction).
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First-in-human nuclease-free homologous recombination-dependent gene editing in pediatric patients with methylmalonic acidemia: results of a phase 1/2 study.
L-Carnitine (Levocarnitine) · europepmc · 2026 · RCT · Phase 1
The SUNRISE study showed that while gene editing can increase MMUT expression, it did not effectively normalize serum methylmalonic acid levels, and safety concerns were raised due to treatment-emergent adverse events.
Not reported in abstract.
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