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Newborn magnetic resonance

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https://www.readbyqxmd.com/read/28523000/mast-cells-and-mcpt4-chymase-promote-renal-impairment-after-partial-ureteral-obstruction
#1
Maguelonne Pons, Liza Ali, Walid Beghdadi, Luca Danelli, Marianne Alison, Lydia Celia Madjène, Jessica Calvo, Julien Claver, Shamila Vibhushan, Magnus Åbrink, Gunnar Pejler, Marie-Laurence Poli-Mérol, Michel Peuchmaur, Alaa El Ghoneimi, Ulrich Blank
Obstructive nephropathy constitutes a major cause of pediatric renal progressive disease. The mechanisms leading to disease progression are still poorly understood. Kidney fibrotic lesions are reproduced using a model of partial unilateral ureteral obstruction (pUUO) in newborn mice. Based on data showing significant mast cell (MC) infiltration in patients, we investigated the role of MC and murine MCPT4, a MC-released chymase, in pUUO using MC- (W(sh/sh)), MCPT4-deficient (Mcpt4(-/-)), and wild-type (WT) mice...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28504197/intravenous-injection-of-umbilical-cord-derived-mesenchymal-stromal-cells-attenuates-reactive-gliosis-and-hypomyelination-in-a-neonatal-intraventricular-hemorrhage-model
#2
Takeo Mukai, Yuka Mori, Takahisa Shimazu, Atsuko Takahashi, Hajime Tsunoda, Satoru Yamaguchi, Shigeru Kiryu, Arinobu Tojo, Tokiko Nagamura-Inoue
Intraventricular hemorrhage (IVH) is a frequent complication of preterm newborns, resulting in cerebral palsy and cognitive handicap as well as hypoxic ischemic encephalopathy and periventricular leukomalacia. In this study, we investigated the restorative effect on neonatal IVH by umbilical cord-derived mesenchymal stromal cells (UC-MSCs) cultured in serum-free medium (RM medium) for clinical application. UC-MSCs were cultured with αMEM medium supplemented with FBS or RM. A neonatal IVH mouse model at postnatal day 5 was generated by intraventricular injection of autologous blood, and mice were intravenously administered 1×10(5) UC-MSCs two days after IVH...
May 11, 2017: Neuroscience
https://www.readbyqxmd.com/read/28487658/early-changes-in-glutamate-metabolism-and-perfusion-in-basal-ganglia-following-hypoxia-ischemia-in-neonatal-piglets-a-multi-sequence-3-0t-mr-study
#3
Yu-Xue Dang, Kai-Ning Shi, Xiao-Ming Wang
The excitotoxicity of glutamate metabolism as well as hemodynamic disorders of the brain are both risk factors for neonatal hypoxic-ischemic brain damage (HIBD). In the present study, changes in glutamate metabolism in the basal ganglia were detected by proton magnetic resonance spectroscopy ((1)H-MRS) at 0-6, 8-12, 24-30, and 48-60 h after the induction of hypoxia-ischemia (HI) in newborn piglets. Meanwhile, correlation analysis was performed by combining the microcirculatory perfusion informations acquired by intravoxel incoherent motion (IVIM) scan to explore their possible interaction mechanism...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28471537/orientation-changes-in-the-cruciate-ligaments-of-the-knee-during-skeletal-growth-a-porcine-model
#4
Stephanie G Cone, Sean G Simpson, Jorge A Piedrahita, Lynn A Fordham, Jeffrey T Spang, Matthew B Fisher
Musculoskeletal injuries in pediatric patients are on the rise, including significant increases in anterior cruciate ligament (ACL) injuries. Previous studies have found major anatomical changes during skeletal growth in the soft tissues of the knee. Specifically, the ACL and the posterior cruciate ligament (PCL) change in their relative orientation to the tibial plateau throughout growth. In order to develop age-specific treatments for ACL injuries, the purpose of this study was to characterize orientation changes in the cruciate ligaments of the Yorkshire pig, a common pre-clinical model, during skeletal growth in order to verify the applicability of this model for pediatric musculoskeletal studies...
May 4, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28433624/temporal-slice-registration-and-robust-diffusion-tensor-reconstruction-for-improved-fetal-brain-structural-connectivity-analysis
#5
Bahram Marami, Seyed Sadegh Mohseni Salehi, Onur Afacan, Benoit Scherrer, Caitlin K Rollins, Edward Yang, Judy A Estroff, Simon K Warfield, Ali Gholipour
Diffusion weighted magnetic resonance imaging, or DWI, is one of the most promising tools for the analysis of neural microstructure and the structural connectome of the human brain. The application of DWI to map early development of the human connectome in-utero, however, is challenged by intermittent fetal and maternal motion that disrupts the spatial correspondence of data acquired in the relatively long DWI acquisitions. Fetuses move continuously during DWI scans. Reliable and accurate analysis of the fetal brain structural connectome requires careful compensation of motion effects and robust reconstruction to avoid introducing bias based on the degree of fetal motion...
April 19, 2017: NeuroImage
https://www.readbyqxmd.com/read/28418523/neurocognitive-trajectory-of-boys-who-received-a-hematopoietic-stem-cell-transplant-at-an-early-stage-of-childhood-cerebral-adrenoleukodystrophy
#6
Elizabeth I Pierpont, Julie B Eisengart, Ryan Shanley, David Nascene, Gerald V Raymond, Elsa G Shapiro, Rich S Ziegler, Paul J Orchard, Weston P Miller
Importance: Untreated childhood cerebral adrenoleukodystrophy (cALD) is a fatal disease associated with progressive cerebral demyelination and rapid, devastating neurologic decline. The standard of care to enhance long-term survival and stabilize cerebral disease is a hematopoietic stem cell transplant (HSCT). Neurologic outcomes are better when HSCT occurs at an earlier stage of cALD, yet there is limited understanding of the neurocognitive trajectory of patients who undergo HSCT. Objectives: To characterize neurocognitive outcomes of boys with cALD and early-stage cerebral disease who were treated with an allogeneic HSCT and to identify disease- and treatment-related factors associated with long-term functioning...
April 17, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28417039/a-true-human-tail-in-a-neonate-case-report-and-literature-review
#7
Mahesh K Pillai, Smitha T Nair
A true human tail is a benign vestigial caudal cutaneous structure composed of adipose, connective tissue, muscle, vessels, nerves and mechanoreceptors. A true human tail can be distinguished from a pseudotail as the latter is commonly associated with underlying spinal dysraphism, which requires specialised management. True human tails are very rare, with fewer than 40 cases reported to date. We report a healthy one-day-old male newborn who was referred to the Bharath Hospital, Kottayam, Kerala, India, in 2014 with a cutaneous appendage arising from the lumbosacral region...
February 2017: Sultan Qaboos University Medical Journal
https://www.readbyqxmd.com/read/28368078/genotyping-of-toxoplasma-gondii-strain-directly-from-human-csf-samples-of-congenital-toxoplasmosis-clinical-case
#8
Chiara Pagliuca, Gabiria Pastore, Elena Scaglione, Annalisa Migliucci, Giuseppe Maria Maruotti, Annunziata Gaetana Cicatiello, Elena Salvatore, Marco Picardi, Josè Camilla Sammartino, Maria Consiglio Buonocore, Pasquale Martinelli, Emilia Iaccarino, Roberta Colicchio, Paola Salvatore
This report describes a case of congenital toxoplasmosis in a newborn in Southern Italy. A pregnant mother had been admitted at the 20th week of her pregnancy on account of pharyngodynia and laterocervical lymphadenopathy. Although serological testing of the mother's serum documented a seroconversion with positive IgG and IgM anti-Toxoplasma antibodies during II trimester, the woman refused to perform prenatal diagnosis for congenital toxoplasmosis. Fetal ultrasound scan already showed mild asymmetrical triventricular hydrocephaly and cerebral calcifications...
April 3, 2017: New Microbiologica
https://www.readbyqxmd.com/read/28352637/neurostimulation-for-fecal-incontinence-after-correction-of-repair-of-imperforate-anus
#9
Alexandre Bougie, Nathalie McFadden, Sandeep Mayer, Michel Lebel, Ghislain Devroede
We are reporting the case of a 32-year-old female who had suffered from fecal incontinence (FI). She was born with an imperforate anus and a recto-vaginal fistula; she underwent repair at 6 mo of age. At 29 years of age, she was still fecally incontinent despite extensive pelvic floor reeducation. A magnetic resonance imaging and an anal electromyography were performed. Because her symptoms were considered to be probably due to extra-sphincteric implantation of the neo-anus, a redo was performed of the recto-neo-anal intra-sphincteric anastomosis...
March 16, 2017: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/28351039/prognostic-value-of-the-apparent-diffusion-coefficient-in-newborns-with-hypoxic-ischaemic-encephalopathy-treated-with-therapeutic-hypothermia
#10
Eva-Marie Heursen, Amaya Zuazo Ojeda, Isabel Benavente Fernández, Gema Jimenez Gómez, Rosalía Campuzano Fernández-Colima, José Paz-Expósito, Simón Pedro Lubián López
BACKGROUND: Apparent diffusion coefficient (ADC) quantification has been proven to be of prognostic value in term newborns with hypoxic-ischaemic encephalopathy (HIE) who were treated under normothermia. OBJECTIVES: To evaluate the prognostic value of ADC in standardized brain regions in neonates with HIE who were treated with therapeutic hypothermia (TH). METHODS: This prospective cohort study included 54 term newborns who were admitted with HIE and treated with TH...
March 29, 2017: Neonatology
https://www.readbyqxmd.com/read/28347765/spinal-cord-injury-in-hypertonic-newborns-after-antenatal-hypoxia-ischemia-in-a-rabbit-model-of-cerebral-palsy
#11
Alexander Drobyshevsky, Katharina A Quinlan
While antenatal hypoxia-ischemia (H-I) is a well-established cause of brain injury, the effects of H-I on the spinal cord remain undefined. This study examined whether hypertonia in rabbits was accompanied by changes in spinal architecture. Rabbit dams underwent global fetal H-I at embryonic day 25 for 40min. High resolution diffusion tensor imaging was performed on fixed neonatal CNS. Fractional anisotropy (FA) and regional volumetric measurements were compared between kits with and without hypertonia after H-I and sham controls using Tract Based Spatial Statistics...
March 24, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28343228/focal-brain-injury-associated-with-a-model-of-severe-hypoxic-ischemic-encephalopathy-in-nonhuman-primates
#12
Ryan M McAdams, Ronald J McPherson, Raj P Kapur, Sandra E Juul
Worldwide, hypoxic-ischemic encephalopathy (HIE) is a major cause of neonatal mortality and morbidity. To better understand the mechanisms contributing to brain injury and improve outcomes in neonates with HIE, better preclinical animal models that mimic the clinical situation following birth asphyxia in term newborns are needed. In an effort to achieve this goal, we modified our nonhuman primate model of HIE induced by in utero umbilical cord occlusion (UCO) to include postnatal hypoxic episodes, in order to simulate apneic events in human neonates with HIE...
March 25, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28329999/bilateral-cystic-coloboma-with-microphtalmos-and-eyelid-agenesis-us-and-mri-findings
#13
Youssef Omor, Benjamin Dhaene, Veronique Toppet, Marie Cassart, Patrice Jissendi-Tchofo
INTRODUCTION: The combination of bilateral microphthalmos, cystic coloboma and eyelid agenesis is rare. The definite diagnosis of this malformation is established by fundoscopic examination and confirmed by imaging modalities such as ultrasonography (US) and magnetic resonance imaging (MRI). This disorder may be associated with specific chromosomal abnormalities. CASE REPORT: A 1-week-old male newborn was referred for bilateral eyelid agenesis. He was born at term by caesarean for foetal distress, after an uneventful gestation...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28301882/infantile-hemangioma-of-the-posterior-fossa-in-a-newborn-early-management-and-long-term-follow-up
#14
Elsa Haine, Annick Sevely, Sergio Boetto, Marie-Bernadette Delisle, Claude Cances
A 21-day-old male infant was admitted with signs of intracranial hypertension. Brain magnetic resonance imaging (MRI) revealed a voluminous mass in the posterior fossa with an intense peripheral enhancement on T1 images with gadolinium. The child was treated secondarily by surgical decompression of the posterior fossa and the lesion was biopsied. The pathological findings indicated infantile hemangioma. Treatment with oral prednisolone was initiated at 3 months, given the lack of tumor involution. Six months after corticotherapy was stopped, repeated MRIs indicated a significant reduction in tumor size and then complete disappearance...
March 16, 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28274169/safety-and-efficacy-of-topiramate-in-neonates-with-hypoxic-ischemic-encephalopathy-treated-with-hypothermia-neonati-a-feasibility-study
#15
Luca Filippi, Patrizio Fiorini, Serena Catarzi, Elettra Berti, Letizia Padrini, Elisa Landucci, Gianpaolo Donzelli, Laura Bartalena, Erika Fiorentini, Antonio Boldrini, Matteo Giampietri, Rosa Teresa Scaramuzzo, Giancarlo la Marca, Maria Luisa Della Bona, Simona Fiori, Francesca Tinelli, Ada Bancale, Andrea Guzzetta, Giovanni Cioni, Tiziana Pisano, Melania Falchi, Renzo Guerrini
Purpose To investigate the feasibility of a study based on treatment with topiramate added to moderate hypothermia in newborns with hypoxic ischemic encephalopathy (HIE). Materials and methods Multicenter randomized controlled trial. Term newborns with precocious metabolic, clinical and electroencephalographic (EEG) signs of HIE were selected according to their amplified integrated EEG pattern and randomized to receive either topiramate (10 mg/kg once a day for the first three days of life) plus moderate hypothermia or hypothermia alone...
March 8, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28253907/systemic-pro-inflammatory-cytokine-status-following-therapeutic-hypothermia-in-a-piglet-hypoxia-ischemia-model
#16
Eridan Rocha-Ferreira, Dorottya Kelen, Stuart Faulkner, Kevin D Broad, Manigandan Chandrasekaran, Áron Kerenyi, Takenori Kato, Alan Bainbridge, Xavier Golay, Mark Sullivan, Boris W Kramer, Nicola J Robertson
BACKGROUND: Inflammatory cytokines are implicated in the pathogenesis of perinatal hypoxia-ischemia (HI). The influence of hypothermia (HT) on cytokines after HI is unclear. Our aim was to assess in a piglet asphyxia model, under normothermic (NT) and HT conditions: (i) the evolution of serum cytokines over 48 h and (ii) cerebrospinal fluid (CSF) cytokine levels at 48 h; (iii) serum pro/anti-inflammatory cytokine profile over 48 h and (iv) relation between brain injury measured by magnetic resonance spectroscopy (MRS) and brain TUNEL positive cells with serum cytokines, serum pro/anti-inflammatory cytokines and CSF cytokines...
March 3, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28245271/association-between-vertebral-cross-sectional-area-and-lumbar-lordosis-angle-in-adolescents
#17
Tishya A L Wren, Patricia C Aggabao, Ervin Poorghasamians, Thomas A Chavez, Skorn Ponrartana, Vicente Gilsanz
Lumbar lordosis (LL) is more prominent in women than in men, but the mechanisms responsible for this discrepancy are poorly defined. A recent study indicates that newborn girls have smaller vertebral cross-sectional area (CSA) when compared to boys-a difference that persists throughout life and is independent of body size. We determined the relations between vertebral cross-sectional area (CSA) and LL angle and whether sex differences in lumbar lordosis are related to sex differences in vertebral CSA. Using multi-planar magnetic resonance imaging (MRI), we measured vertebral cross-sectional area (CSA) and vertebral height of the spine of 40 healthy boys and 40 girls, ages 9-13 years...
2017: PloS One
https://www.readbyqxmd.com/read/28217152/value-of-electroencephalographic-monitoring-in-newborns-with-hypoxic-ischemic-encephalopathy-treated-with-hypothermia
#18
Hatem Hamed Elshorbagy, Ahmed A Azab, Naglaa M Kamal, Naglaa Fathy Barseem, Mohamed M Bassiouny, Mostafa A Elsayed, Tohamy H Elkhouly
BACKGROUND: The values of electroencephalography (EEG) in neonatal hypoxic-ischemic encephalopathy (HIE) during therapeutic hypothermia (TH) are still uncertain. AIMS: The aim of this study is to detect EEG background, the prevalence of seizures during cooling, and to determine different EEG patterns that can predict brain injury in magnetic resonance imaging (MRI). PATIENTS AND METHODS: Thirty-nine newborns with HIE were subjected to TH. Continuous monitoring by video-EEG was carried out throughout cooling and during rewarming...
October 2016: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28215183/yolk-sac-tumor-in-the-abdominal-wall-of-an-18-month-old-girl-a-case-report
#19
Machiel van den Akker, Dirk Vervloessem, An Huybrechs, Sabine Declercq, Jutte van der Werff Ten Bosch
BACKGROUND: Pediatric germ cell tumors account for approximately 3.5 % of all childhood cancers for children under the age of 15 years. Up to one-third are extragonadal neoplasms. Germ cell tumors are a heterogeneous group of malignant tumors with a wide variety of histopathological features. Yolk sac tumor is the predominant variant in newborns and younger children. We report for the first time, the presentation of a primary yolk sac tumor in the abdominal wall of a small child. CASE PRESENTATION: An 18-month-old white girl underwent resection of a small, round subcutaneous lump (1...
February 20, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28202853/structures-showing-negative-correlations-of-signal-intensity-with-postnatal-age-on-t1-weighted-imaging-of-the-brain-of-newborns-and-infants
#20
Saeka Hori, Toshiaki Taoka, Tomoko Ochi, Toshiteru Miyasaka, Masahiko Sakamoto, Katsutoshi Takayama, Takeshi Wada, Kaoru Myochin, Yukihiro Takahashi, Kimihiko Kichikawa
PURPOSE: Although the neonatal and infantile brain typically shows sequential T1 shortening according to gestational age as a result of myelination, several structures do not follow this rule. We evaluated the relationship between the signal intensity of various structures in the neonatal and infantile brain on T1-weighted imaging (T1WI) and either postnatal or gestational age. MATERIALS AND METHODS: We examined magnetic resonance images from 120 newborns and infants without any abnormalities in the central nervous system...
February 16, 2017: Magnetic Resonance in Medical Sciences: MRMS
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