4.6 Article

Definition and quantification of acute inflammatory white matter injury in the immature brain by MRI/MRS at high magnetic field

期刊

PEDIATRIC RESEARCH
卷 75, 期 3, 页码 415-423

出版社

NATURE PUBLISHING GROUP
DOI: 10.1038/pr.2013.242

关键词

-

资金

  1. Swiss National Fund [33CM30-124101]
  2. Centre d'Imagerie BioMedicale of the University of Lausanne
  3. University of Geneva
  4. University Hospital of Geneva
  5. Centre Hospitalier Universitaire Vaudois
  6. Ecole Polytechnique de Lausanne
  7. Boninchi Foundation in Switzerland
  8. De Reuter Foundation in Switzerland
  9. Leenaards Foundation in Switzerland
  10. Jeantet Foundation in Switzerland
  11. Swiss National Science Foundation (SNF) [33CM30-124101] Funding Source: Swiss National Science Foundation (SNF)

向作者/读者索取更多资源

BACKGROUND: Lipopolysaccharide (LPS) injection in the corpus callosum (CC) of rat pups results in diffuse white matter injury similar to the main neuropathology of preterm infants. The aim of this study was to characterize the structural and metabolic markers of acute inflammatory injury by high-field magnetic resonance imaging (MRI) magnetic resonance spectroscopy (MRS) in vivo. METHODS:Twenty-four hours after a 1-mg/kg injection of LPS in postnatal day 3 rat pups, diffusion tensor imaging and proton nuclear magnetic spectroscopy (H-1 NMR) were analyzed in conjunction to determine markers of cell death and inflammation using immunohistochemistry and gene expression. RESULTS: MRI and MRS in the CC revealed an increase in lactate and free lipids and a decrease of the apparent diffusion coefficient. Detailed evaluation of the CC showed a marked apoptotic response assessed by fractin expression. Interestingly, the degree of reduction in the apparent diffusion coefficient correlated strongly with the natural logarithm of fractin expression, in the same region of interest. LPS injection further resulted in increased activated microglia clustered in the cingulum, widespread astrogliosis, and increased expression of genes for interleukin (IL)-1, IL-6, and tumor necrosis factor. CONCLUSION: This model was able to reproduce the typical MRI hallmarks of acute diffuse white matter injury seen in preterm infants and allowed the evaluation of in vivo biomarkers of acute neuropathology after inflammatory challenge.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Pediatrics

Effects of nutrition therapy on growth, inflammation and metabolism in immature infants: a study protocol of a double-blind randomized controlled trial (ImNuT)

Kristina Wendel, Helle Cecilie Viekilde Pfeiffer, Drude Merete Fugelseth, Eirik Nestaas, Magnus Domelloef, Bjorn Steen Skalhegg, Katja Benedikte Presto Elgstoen, Helge Rootwelt, Rolf Dagfinn Pettersen, Are Hugo Pripp, Tom Stiris, Sissel J. Moltu

Summary: This study aims to investigate the effects of early supply of ARA and DHA on brain maturation and neonatal outcomes in infants born before 29 weeks of gestation. Infants will receive a fatty acid supplement from the second day of life to 36 weeks' postmenstrual age, with the primary outcome being brain maturation assessed by MRI.

BMC PEDIATRICS (2021)

Article Biochemistry & Molecular Biology

Late post-natal neurometabolic development in healthy male rats using 1H and 31P magnetic resonance spectroscopy

Veronika Rackayova, Dunja Simicic, Guillaume Donati, Olivier Braissant, Rolf Gruetter, Valerie A. McLin, Cristina Cudalbu

Summary: The study revealed significant changes in brain metabolites in both the hippocampus and cerebellum during the later post-natal period of male rats, including decreased taurine and increased glutamate in the hippocampus, as well as a constant increase in myo-inositol and choline-containing compounds. These findings suggest the importance of considering changes in neurometabolites beyond the conventionally accepted cut off for adulthood in experimental design and data interpretation in this animal model.

JOURNAL OF NEUROCHEMISTRY (2021)

Article Neurosciences

Preterm birth leads to impaired rich-club organization and fronto-paralimbic/limbic structural connectivity in newborns

Joana Sa de Almeida, Djalel-Eddine Meskaldji, Serafeim Loukas, Lara Lordier, Laura Gui, Francois Lazeyras, Petra S. Huppi

Summary: Prematurity disrupts brain development and network organization, leading to increased segregation and decreased integration capacity in preterm infants. Compared to full-term infants, preterm infants demonstrate delayed transition in brain network architecture and decreased connectivity strength in specific regions, potentially underlying behavioral and social cognition difficulties.

NEUROIMAGE (2021)

Article Clinical Neurology

Super-resolution reconstruction of T2-weighted thick-slice neonatal brain MRI scans

N. Ceren Askin Incebacak, Yao Sui, Laura Gui Levy, Laura Merlini, Joana Sa de Almeida, Sebastien Courvoisier, Tess E. Wallace, Antoine Klauser, Onur Afacan, Simon K. Warfield, Petra Huppi, Francois Lazeyras

Summary: The study compares the image quality of 2D high-resolution image acquisition with 3D reconstruction from low-resolution images in neonatal subjects, finding that they have comparable quality for clinical and morphometric assessments, with no loss of anatomical details and similar edge definition. Quantitative assessments show the reconstructed images accurately detect fine anatomical structures and allow for comparable morphometric measurements.

JOURNAL OF NEUROIMAGING (2022)

Review Pediatrics

Need for more evidence in the prevention and management of perinatal asphyxia and neonatal encephalopathy in low and middle-income countries: A call for action

Vaisakh Krishnan, Vijay Kumar, Gabriel Fernando Todeschi Variane, Waldemar A. Carlo, Zulfiqar A. Bhutta, Stephane Sizonenko, Anne Hansen, Seetha Shankaran, Sudhin Thayyil

Summary: Although low- and middle-income countries face a high burden of neonatal encephalopathy, there is limited evidence on prevention and management in these settings. Interventions based on high-income countries' evidence may not always be applicable to LMICs, and more research is needed to evaluate effective treatments specifically for these regions. Careful attention to supportive care is likely to improve outcomes until specific neuroprotective or neurorestorative therapies are available.

SEMINARS IN FETAL & NEONATAL MEDICINE (2021)

Review Pediatrics

Practical recommendations on room sizes for hospitalised newborn infants and their families based on a systematic review of the literature

Elodie Zana-Taieb, Jacques Sizun, Pierre Kuhn, Audrey Reynaud

Summary: This article investigates the impact of neonatal unit design on the neurodevelopment of hospitalized neonates and the well-being of parents and healthcare staff. It provides recommendations regarding the minimum area required for a hospital room for a single neonate and their family.

ACTA PAEDIATRICA (2022)

Article Neurosciences

Altered trajectory of neurodevelopment associated with fetal growth restriction

Ingrid Dudink, Petra S. Huppi, Stephane V. Sizonenko, Margie Castillo-Melendez, Amy E. Sutherland, Beth J. Allison, Suzanne L. Miller

Summary: Fetal growth restriction (FGR) is mainly caused by suboptimal placental function, leading to limited nutrient and oxygen supply to the developing fetus, particularly affecting brain development. FGR results in altered brain morphology, disrupted connectivity, and region-specific brain network disturbances, which are associated with cognitive and behavioral impairments.

EXPERIMENTAL NEUROLOGY (2022)

Article Neurosciences

Musical memories in newborns: A resting-state functional connectivity study

Serafeim Loukas, Lara Lordier, Djalel-Eddine Meskaldji, Manuela Filippa, Joana Sa de Almeida, Dimitri Van de Ville, Petra S. Hueppi

Summary: Research indicates that even during the newborn period, familiar music and unfamiliar music are processed differently by the brain. After music listening, functional connectivity between brain regions in all newborns is modulated. Premature infants exposed to music experience enhanced functional connectivity between brain regions after listening to music.

HUMAN BRAIN MAPPING (2022)

Article Radiology, Nuclear Medicine & Medical Imaging

Transverse Relaxation Anisotropy of the Achilles and Patellar Tendon Studied by MR Microscopy

Benedikt Hager, Markus M. Schreiner, Sonja M. Walzer, Lena Hirtler, Vladimir Mlynarik, Andreas Berg, Xeni Deligianni, Oliver Bieri, Reinhard Windhager, Siegfried Trattnig, Vladimir Juras

Summary: This study analyzed the T-2* anisotropy and T-2* decay of Achilles and patellar tendons using a variable-echo-time sequence. The results showed that changes in fiber-to-field angle significantly affected T-2* values, indicating the importance of being aware of T-2* anisotropy in quantitative T-2* mapping of tendons to avoid misinterpretation.

JOURNAL OF MAGNETIC RESONANCE IMAGING (2022)

Article Nutrition & Dietetics

Dose-Dependent Neuroprotective Effects of Bovine Lactoferrin Following Neonatal Hypoxia-Ischemia in the Immature Rat Brain

Eduardo Sanches, Yohan van de Looij, Sadou Sow, Audrey Toulotte, Analina da Silva, Laura Modernell, Stephane Sizonenko

Summary: This study demonstrates that lactoferrin (Lf) supplementation attenuates acute and long-term cerebral injuries caused by hypoxia-ischemia in a dose-dependent manner. The optimal dose of 1 g/kg of Lf showed the best effects, reducing brain volume decreases and other detrimental effects. The research emphasizes the need for better understanding of Lf's effects and potential harmful effects on immature brains.

NUTRIENTS (2021)

Article Radiology, Nuclear Medicine & Medical Imaging

Segmenting electroencephalography wires reduces radiofrequency shielding artifacts in simultaneous electroencephalography and functional magnetic resonance imaging at 7 T

Thanh Phong Le, Rolf Gruetter, Joao Jorge, Oezlem Ipek

Summary: This study thoroughly investigated the RF shielding artifact of a state-of-the-art EEG-fMRI setup at 7T and proposed a practical solution. By segmenting the EEG wiring into shorter lengths, the RF shielding artifacts can be significantly reduced without substantial SAR penalties.

MAGNETIC RESONANCE IN MEDICINE (2022)

Review Nutrition & Dietetics

Neuroprotective Role of Lactoferrin during Early Brain Development and Injury through Lifespan

Gabriel Henrique Schirmbeck, Stephane Sizonenko, Eduardo Farias Sanches

Summary: Early adverse fetal environments can disrupt CNS development and breastfeeding, especially with the presence of lactoferrin, plays a crucial role in supporting brain development and preventing neuropsychiatric diseases later in life.

NUTRIENTS (2022)

Letter Radiology, Nuclear Medicine & Medical Imaging

Does T1 rho Measure Proteoglycan Concentration in Cartilage?

Victor Casula, Jouni Karjalainen, Vladimir Mlynarik, Timo Liimatainen, Matti Hanni, Edwin H. G. Oei, Mikko J. Nissi, Miika T. Nieminen

JOURNAL OF MAGNETIC RESONANCE IMAGING (2023)

Editorial Material Pediatrics

Multisensory stimuli and pain perception in the newborn

Petra S. Huppi, Manuela Filippa

PEDIATRIC RESEARCH (2023)

暂无数据