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Updated: Jun 9, 2026

Non-invasive Optical Measurement of Cerebral Metabolism and Hemodynamics in Infants
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Non-invasive Optical Measurement of Cerebral Metabolism and Hemodynamics in Infants

Published on: March 14, 2013

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胎儿大脑MRI Pyruvate脱酶复杂缺乏症中的异常

Olivier Fortin1, Kelsey Christoffel1, Abdullah B Shoaib1

  • 1From the Zickler Family Prenatal Pediatrics Institute (O.F., K. Christoffel, K. Cilli, J.L.F.), Department of Radiology (J.W.S.), Rare Disease Institute (J.L.F.), and Center for Genetic Medicine Research (J.L.F.), Children's National Hospital, Washington, DC; Departments of Neurology and Rehabilitation Medicine (K. Christoffel), Radiology (J.W.S.), and Pediatrics (J.L.F.), George Washington University School of Medicine and Health Sciences, Washington, DC; Departments of Pediatrics (A.B.S.) and Neurology (A.B.S.), University of Texas Southwestern Medical Center, Dallas; Division of Neurology (C.V.), Cincinnati Children's Hospital Medical Center; Department of Pediatrics (C.V.), University of Cincinnati College of Medicine, OH; Department of Radiology (C.A.), Boston Children's Hospital, MA; Division of Human Genetics (R.D.G.), Children's Hospital of Philadelphia; and Department of Pediatrics (R.D.G.), University of Pennsylvania Perelman School of Medicine, Philadelphia.

Neurology
|August 5, 2024
PubMed
概括

皮鲁酸脱酶复合体缺乏症 (PDCD) 胎儿大脑MRI显示体发育不良,体积减少和囊性病变. 妊娠第二季度的腺突出囊可能是PDCD的早期诊断标志物.

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Pyruvate Oxidation01:15

Pyruvate Oxidation

After glycolysis, the charged pyruvate molecules enter the mitochondria via active transport and undergo three enzymatic reactions. These reactions ensure that pyruvate can enter the next metabolic pathway so that energy stored in the pyruvate molecules can be harnessed by the cells.
First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...
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Electron Transport Chain: Complex I and II

The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
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Inborn Errors of Metabolism

Phenylketonuria (PKU) is a protein metabolism disorder characterized by high blood levels of the amino acid phenylalanine. This results from a mutation in the gene responsible for phenylalanine hydroxylase, an enzyme that converts phenylalanine into tyrosine. When this enzyme is deficient, phenylalanine builds up in the blood, leading to symptoms such as vomiting, rashes, seizures, growth deficiency, and severe mental retardation. An early diagnosis and a diet restricting phenylalanine intake...