Ex Vivo Human Placenta Perfusion, Metabolic and Functional Imaging for Obstetric Research—A Feasibility Study
| Autor: | Christian Østergaard Mariager, Lotte Bonde Bertelsen, Esben Søvsø Szocska Hansen, Christina S. Duvald, Lars Pedersen, Christoffer Laustsen, Niels Uldbjerg, Michael Pedersen, Katrine Elbæk Madsen |
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| Rok vydání: | 2019 |
| Předmět: |
Pathology
medicine.medical_specialty Placenta pyruvate metabolism hyperpolarization 13C MRI Hemodynamics Blood volume In Vitro Techniques Pregnancy Pyruvic Acid Humans Medicine Radiology Nuclear Medicine and imaging Lactic Acid Hyperpolarization (physics) Advances in Brief reproductive and urinary physiology Blood Volume medicine.diagnostic_test business.industry Magnetic resonance imaging Magnetic Resonance Imaging Functional imaging Glucose medicine.anatomical_structure embryonic structures Feasibility Studies Female business Perfusion Ex vivo |
| Zdroj: | Elbæk Madsen, K, Mariager, C Ø, Duvald, C S, Hansen, E S S, Bertelsen, L B, Pedersen, M, Pedersen, L H, Uldbjerg, N & Laustsen, C 2019, ' Ex Vivo Human Placenta Perfusion, Metabolic and Functional Imaging for Obstetric Research-A Feasibility Study ', Tomography-A Journal for Imaging Research, vol. 5, no. 4, pp. 333-338 . https://doi.org/10.18383/j.tom.2019.00016 Tomography Volume 5 Issue 4 Pages 333-338 Tomography; Volume 5; Issue 4; Pages: 333-338 |
| ISSN: | 2379-139X |
| DOI: | 10.18383/j.tom.2019.00016 |
| Popis: | Placenta metabolism is closely linked to pregnancy outcome, and few modalities are currently available for studying the human placenta. Here, we aimed to investigate a novel ex vivo human placenta perfusion system for metabolic imaging using hyperpolarized [1-13C]pyruvate. The metabolic effects of 3 different human placentas were investigated using functional and metabolic magnetic resonance imaging. The placenta glucose metabolism and hemodynamics were characterized with hyperpolarized [1-13C]pyruvate magnetic resonance imaging and by dynamic contrast-enhanced (DCE) imaging. Hyperpolarized [1-13C]pyruvate showed a decrease in the 13C-lactate/13C-pyruvate ratio from the highest to the lowest metabolic active placenta. The metabolic profile was complemented by a more homogenous distributed hemodynamic response, with a longer mean transit time and higher blood volume. This study shows different placenta metabolic and hemodynamic features associated with the placenta functional status using hyperpolarized magnetic resonance ex vivo. This study supports further studies using ex vivo metabolic imaging of the placenta alterations associated with pregnancy complications. |
| Databáze: | OpenAIRE |
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