Title |
Changes in Cerebral Oxidative Metabolism during Neonatal Seizures Following Hypoxic–Ischemic Brain Injury
|
---|---|
Published in |
Frontiers in Pediatrics, August 2016
|
DOI | 10.3389/fped.2016.00083 |
Pubmed ID | |
Authors |
Subhabrata Mitra, Gemma Bale, Sean Mathieson, Cristina Uria-Avellanal, Judith Meek, Ilias Tachtsidis, Nicola J. Robertson |
Abstract |
Seizures are common following hypoxic-ischemic brain injury in newborn infants. Prolonged or recurrent seizures have been shown to exacerbate neuronal damage in the developing brain; however, the precise mechanism is not fully understood. Cytochrome-c-oxidase is responsible for more than 90% of ATP production inside mitochondria. Using a novel broadband near-infrared spectroscopy system, we measured the concentration changes in the oxidation state of cerebral cytochrome-c-oxidase (Δ[oxCCO]) and hemodynamics during recurrent neonatal seizures following hypoxic-ischemic encephalopathy in a newborn infant. A rapid increase in Δ[oxCCO] was noted at the onset of seizures along with a rise in the baseline of amplitude-integrated electroencephalogram. Cerebral oxygenation and cerebral blood volume fell just prior to the seizure onset but recovered rapidly during seizures. Δ[oxCCO] during seizures correlated with changes in mean electroencephalogram voltage indicating an increase in neuronal activation and energy demand. The progressive decline in the Δ[oxCCO] baseline during seizures suggests a progressive decrease of mitochondrial oxidative metabolism. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 2 | 29% |
Switzerland | 1 | 14% |
Australia | 1 | 14% |
Unknown | 3 | 43% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Scientists | 3 | 43% |
Members of the public | 3 | 43% |
Science communicators (journalists, bloggers, editors) | 1 | 14% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 1 | 2% |
United States | 1 | 2% |
Unknown | 43 | 96% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 8 | 18% |
Student > Bachelor | 7 | 16% |
Other | 4 | 9% |
Researcher | 4 | 9% |
Student > Master | 3 | 7% |
Other | 10 | 22% |
Unknown | 9 | 20% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 11 | 24% |
Engineering | 7 | 16% |
Neuroscience | 6 | 13% |
Physics and Astronomy | 3 | 7% |
Agricultural and Biological Sciences | 2 | 4% |
Other | 4 | 9% |
Unknown | 12 | 27% |