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Neonatal pathology

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https://www.readbyqxmd.com/read/29160197/isolation-and-molecular-characterization-of-group-b-streptococcus-from-laboratory-long-evans-rats-rattus-norvegicus-with-and-without-invasive-group-b-streptococcal-disease
#1
Caroline Bodi Winn, Vasudevan Bakthavatchalu, Michael Y Esmail, Yan Feng, JoAnn Dzink-Fox, Lauren Richey, Scott E Perkins, Eric K Nordberg, James G Fox
PURPOSE: Group B Streptococcus (S. agalactiae, GBS) is a Gram-positive opportunistic pathogen that inhabits the respiratory, urogenital and gastrointestinal tracts of humans and animals. Maternal colonization of GBS is a risk factor for a spectrum of clinical diseases in humans and a principle cause of neonatal meningitis and septicaemia. METHODOLOGY: We describe polymicrobial sepsis including GBS in two gravid adult female Long-Evans rats experiencing acute mortality from a colony of long-term breeding pairs...
November 21, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29157050/pregnancy-outcome-and-placental-pathology-in-small-for-gestational-age-neonates-in-relation-to-the-severity-of-their-growth-restriction
#2
Ohad Gluck, Letizia Schreiber, Adi Marciano, Yossi Mizrcachi, Jacob Bar, Michal Kovo
PURPOSE: To investigate neonatal outcome and placental pathology in pregnancies complicated with small for gestational age neonates (SGA), in relation to the severity of growth restriction. METHODS: The medical records and placental histology reports of all neonates with a birth-weight (BW) ≤ 10th percentile, born between 24-42 weeks, during 2010-2015, were reviewed. Placental lesions were classified into maternal and fetal vascular malperfusion (maternal vascular malperfusion (MVM) and fetal vascular malperfusion (FVM)) lesions...
November 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29155636/hepatic-imaging-in-neonates-and-young-infants-state-of-the-art
#3
Stephanie B Shamir, Jessica Kurian, Debora Kogan-Liberman, Benjamin H Taragin
Neonatal liver disease is an important source of morbidity in the pediatric population. The manifestation of liver disease in young infants may be different than in older patients, and there are a number of diagnoses that are unique to this age group. Familiarity with these entities is important as imaging plays a key role in the diagnostic workup, and prompt diagnosis is necessary to prevent complications. This article reviews the spectrum of liver pathologies that can manifest in the first 6 months of life and is intended to educate the general radiologist who may be faced with interpretation of neonatal liver imaging...
December 2017: Radiology
https://www.readbyqxmd.com/read/29155093/histone-acetylation-of-oligodendrocytes-protects-against-white-matter-injury-induced-by-inflammation-and-hypoxia-ischemia-through-activation-of-bdnf-trkb-signaling-pathway-in-neonatal-rats
#4
Jichong Huang, Li Zhang, Yi Qu, Yan Zhou, Jianghu Zhu, Yafei Li, Tingting Zhu, Fengyan Zhao, Jun Tang, Dezhi Mu
The major pathological damage in encephalopathy of prematurity is white matter injury (WMI). Perinatal hypoxic-ischemia (HI) and inflammation are two major risk factors in the development of WMI. To study the cellular and molecular mechanisms of WMI, we set up a WMI model using lipopolysaccharide-sensitized HI injury in 2-day postnatal rats. Immunofluorescence staining was used to measure the expression of acetylated histone H3 (AH3) in oligodendrocytes, the target cells of WMI; the oligodendrocyte protein markers, NG2, O4, MBP, PLP, and MAG, were detected at different developmental stages...
November 16, 2017: Brain Research
https://www.readbyqxmd.com/read/29150336/urinary-tract-infections-in-neonates-with-unexplained-pathological-indirect-hyperbilirubinemia-prevalence-and-significance
#5
Elif Bahat Ozdogan, Mehmet Mutlu, Secil Arslansoyu Camlar, Gülcin Bayramoglu, Sebnem Kader, Yakup Aslan
BACKGROUND: It is controversial to test for urinary tract infection (UTI) in patients with unexplained indirect hyperbilirubinemia in the first 2 weeks of life. We aimed to study the prevalence and significance of UTIs in such neonates who were requiring phototherapy. METHODS: Subjects were 2- to 14-day-old neonates with indirect bilirubin levels above phototherapy limit with no other abnormality in their bilirubinaemia-related etiologic workup. UTI was diagnosed by 2 consecutive positive cultures obtained by catheterisation, documenting growth of >10,000 colonies of the same microorganism with consistent antibiograms...
October 28, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/29144490/neonatal-lung-ultrasound-exam-guidelines
#6
D Kurepa, N Zaghloul, L Watkins, J Liu
Point-of-care ultrasound (POC-US) is increasingly used especially in emergency and critical-care medicine. It is focused, quick and does not expose patients to ionizing radiation. It encompasses all organ systems and has well-defined indications. Lung ultrasound (LUS) represents one of the most exciting applications in the field of POC-US. It is particularly important to emphasize the role of LUS in neonatology due to the specific pathology inherent in lung immaturity as well as in the particular sensitivity of neonates to repeated radiation exposure...
November 16, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/29142577/congenital-hypothyroidism-in-neonates-of-a-tertiary-care-hospital
#7
Adeel Ahmad, Anam Wasim, Shahida Hussain, Muhammad Saeed, Bilal Munir Ahmad, Khalil Ur Rehman
Objective: To determine neonatal congenital hypothyroidism among neonates born in a tertiary care hospital of Lahore Pakistan. Methods: This cross-sectional study was carried out at Pathology Department of Allama Iqbal Medical College, Lahore in collaboration with Pediatrics and Gynecology & Obstetrics Department, Jinnah Hospital, Lahore Pakistan. A total of 770 babies were included in this study, both male and female. About 2 ml venous blood samples were collected aseptically from the neonates in sterile clotted tube...
September 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29137711/novel-free-radical-mediated-lipid-peroxidation-biomarkers-in-newborn-plasma
#8
Ángel Sánchez-Illana, Sudhin Thayyil, Paolo Montaldo, Dorothea Jenkins, Guillermo Quintás, Camille Oger, Jean-Marie Galano, Claire Vigor, Thierry Durand, Máximo Vento, Julia Kuligowski
Oxidative stress derived from perinatal asphyxia appears to be closely linked to neonatal brain damage and lipid peroxidation biomarkers have shown to provide predictive power of oxidative stress related pathologies in situations of hypoxia and reoxygenation in the newborn. The objective of this work was to develop and validate of a comprehensive liquid chromatography tandem mass spectrometry approach for the quantitative profiling of 28 isoprostanoids in newborn plasma samples covering a broad range of lipid peroxidation product classes...
December 15, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29137008/the-sonographic-features-of-neonatal-appendicitis-a-case-report
#9
Shu-Yu Si, Yi-Yi Guo, Jian-Feng Mu, Chao-Ying Yan
RATIONALE: Neonatal appendicitis is extremely rare, and preoperative diagnosis is challenging. This study aimed to investigate the utility of ultrasound for the diagnosis of neonatal appendicitis. PATIENT CONCERNS: Four cases of neonatal appendicitis were included in this case series. One was a female infant and the other 3 were male infants; they were aged from 10 to 17 days. DIAGNOSES: Neonatal appendicitis. INTERVENTIONS: Four newborns in our hospital were diagnosed with neonatal appendicitis by abdominal ultrasound...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29136541/impact-of-neonatal-morbidity-on-the-risk-of-developmental-delay-in-late-preterm-infants
#10
Sílvia Martínez-Nadal, Xavier Demestre, Luisa Schonhaut, Sergio R Muñoz, Pere Sala
BACKGROUND: Late preterm infants (LPI) have a higher risk of developmental delay (DD) than term-born infants. The association of perinatal complications with specific morbidity is not clear. AIM: (1) To compare the risk of DD at 4years of age between LPI who have presence or absence of any morbidity associated with the prematurity at birth, called complicated (cLPI) or uncomplicated (uLPI), and term-born infants, (2) to determine maternal and perinatal factors associated with risk of DD, and (3) to analyze, in LPI, the association between perinatal morbidity and risk of DD...
November 11, 2017: Early Human Development
https://www.readbyqxmd.com/read/29133891/decreased-oxygen-saturation-levels-in-neonates-with-transposition-of-great-arteries-impact-on-appearance-of-cerebral-veins-in-susceptibility-weighted-imaging
#11
Rajeev Kumar Verma, Desislava Keller, Sebastian Grunt, Sandra Bigi, Christian Weisstanner, Roland Wiest, Jan Gralla, Damian Hutter, Bendicht Wagner
Purpose of this study was to investigate a potential correlation between the pattern of cerebral veins (CV) on susceptibility-weighted imaging (SWI) and blood oxygen saturation, as well as preoperative brain injury, in neonates with transposition of the great arteries (TGA). Eleven neonates with TGA underwent MRI preoperatively, including SWI, T1- and T2-weighted scans. Images were retrospectively evaluated and appearance of CV was graded from 0 (normal appearance) to 3 (severe prominent appearance). White matter injuries (WMI) and strokes were analysed...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133437/abnormal-microglia-and-enhanced-inflammation-related-gene-transcription-in-mice-with-conditional-deletion-of-ctcf-in-camk2a-cre-expressing-neurons
#12
Bryan E McGill, Ruteja A Barve, Susan E Maloney, Amy Strickland, Nicholas Rensing, Peter Wang, Michael Wong, Richard Head, David F Wozniak, Jeffrey Milbrandt
CCCTC-binding factor (CTCF) is an 11 zinc finger DNA-binding domain protein that regulates gene expression by modifying three dimensional chromatin structure. Human mutations in CTCF cause intellectual disability and autistic features. Knocking out Ctcf in mouse embryonic neurons is lethal by neonatal age, but the effects of CTCF deficiency in postnatal neurons are less well studied. We knocked out Ctcf postnatally in glutamatergic forebrain neurons under the control of Camk2a-CreCtcf(loxP/loxP) ;Camk2a-Cre+ (Ctcf CKO) mice of both sexes were viable and exhibited profound deficits in spatial learning/memory, impaired motor co-ordination, and decreased sociability by 4 months of age...
November 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29133062/anatomical-and-physiological-basis-of-continuous-spike-wave-of-sleep-syndrome-after-early-thalamic-lesions
#13
Alberto Leal, Eulália Calado, José P Vieira, Carla Mendonça, José C Ferreira, Hugo Ferreira, Daniel Carvalho, Fátima Furtado, Roseli Gomes, José P Monteiro
OBJECTIVE: Early neonatal thalamic lesions account for about 14% of continuous spike-wave of sleep (CSWS) syndrome, representing the most common etiology in this epileptic encephalopathy in children, and promise useful insights into the pathophysiology of the disease. METHODS: We describe nine patients with unilateral neonatal thalamic lesions which progressed to CSWS. Longitudinal whole-night and high-density electroencephalograms (EEGs) were performed, as well as detailed imaging and clinical evaluation...
November 10, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29130966/itraq-based-proteomic-analysis-of-neonatal-kidney-from-offspring-of-protein-restricted-rats-reveals-abnormalities-in-intraflagellar-transport-proteins
#14
Xiaomei Liu, Jun Wang, Linlin Gao, Hao Liu, Caixia Liu
BACKGROUND: It is well recognized that adverse events in utero can impair fetal development and lead to the development of kidney injury and hypertension in adulthood. We previously reported a lower kidney index, glomeruli number, and decreased glomerular filtration rate in intrauterine growth restriction (IUGR) offspring induced by maternal protein malnutrition. To explore the molecular mechanisms linking impaired fetal growth to renal diseases, we investigated differentially expressed proteins (DEPs) in the IUGR neonatal kidneys by isobaric tags for relative and absolute quantitation (iTRAQ) analysis...
November 6, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29130675/-severe-adverse-pregnancy-outcomes-in-placenta-previa-and-prior-cesarean-delivery
#15
Mi Zhou, Meng Chen, Li Zhang, Guo-Lin He, Lei He, Qiang Wei, Tao Li, Xing-Hui Liu
OBJECTIVE: To investigate the severe adverse pregnancy outcomes in pregnancies with placenta previa and prior cesarean delivery and its risk factors. METHODS: This retrospective casecontrol study reviewed all pregnancies with placenta previa and prior cesarean delivery delivered by repeat cesarean section in our institution between January 2005 and June 2015,and investigated the incidence of severe adverse pregnancy outcome. A composite of severe adverse pregnancy outcomes (including transfusion of 10 units or more red blood cells,maternal ICU admission,unanticipated injuries,repeat operation,hysterectomy,and maternal death) and other maternal and neonatal outcomes were described...
September 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29127961/fundoplication
#16
REVIEW
Bethany J Slater, Steven S Rothenberg
Gastroesophageal reflux disease (GERD) is a common condition in infants. Symptoms from pathologic GERD include regurgitation, irritability when feeding, failure to thrive, and respiratory problems. Treatment typically starts with dietary modifications and postural changes. Antireflux medications may then be added. Indications for operative management in neonates and infants include poor weight gain, failure to thrive, acute life-threatening events, and continued respiratory symptoms. Laparoscopic Nissen fundoplication has become the standard of care for surgical treatment of children with GERD...
December 2017: Clinics in Perinatology
https://www.readbyqxmd.com/read/29119382/role-of-brown-adipose-tissue-in-metabolic-syndrome-aging-and-cancer-cachexia
#17
REVIEW
Meng Dong, Jun Lin, Wonchung Lim, Wanzhu Jin, Hyuek Jong Lee
Brown adipose tissue (BAT) plays a fundamental role in maintaining body temperature by producing heat. BAT that had been know to exist only in mammals and the human neonate has received great attention for the treatment of obesity and diabetes due to its important function in energy metabolism, ever since it is recently reported that human adults have functional BAT. In addition, beige adipocytes, brown adipocytes in white adipose tissue (WAT), have also been shown to take part in whole body metabolism. Multiple lines of evidence demonstrated that transplantation or activation of BAT or/and beige adipocytes reversed obesity and improved insulin sensitivity...
November 8, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/29118877/eosinophilic-colitis-masquerading-as-malignancy-of-colon
#18
Tagore Sunkara, Arash Samarghandi, Sriharsha Dadana, Vinaya Gaduputi
Eosinophilic colitis (EC) is a rare part of spectrum of diseases called eosinophilic gastrointestinal disease (EGID). It was found to have bimodal distribution involving neonates and adults in age groups of 30 - 50 with male preponderance. We present this case of a 78-year-old woman who came to the hospital with abdominal pain, hematochezia and unintentional weight loss, and was found to have EC. This case was very unique given the age at presentation and the radiological findings mimicking malignancy. We reviewed the possible etiologies, clinical features, pathology, and treatment of EC along with the review of the literature...
October 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/29117948/mortality-in-infants-affected-by-preterm-birth-and-severe-small-for-gestational-age-birth-weight
#19
Joel G Ray, Alison L Park, Deshayne B Fell
BACKGROUND: Few researchers have evaluated neonatal mortality in the combined presence of preterm birth (PTB) and small-for-gestational age (SGA) birth weight. None differentiated between infants with and without anomalies, considered births starting at 23 weeks' gestation, or defined SGA at a more pathologic cutpoint less than the fifth percentile. METHODS: We completed a population-based cohort study within the province of Ontario, Canada, from 2002 to 2015. Included were 1 676 110 singleton hospital live births of 23 to 42 weeks' gestation...
November 8, 2017: Pediatrics
https://www.readbyqxmd.com/read/29115600/messenger-rna-sequencing-reveals-similar-mechanisms-between-neonatal-and-acute-respiratory-distress-syndrome
#20
Hua Mei, Yuheng Zhang, Chunzhi Liu, Yayu Zhang, Chunli Liu, Dan Song, Chun Xin, Jing Wang, Jonathan Josephs-Spaulding, Yan Zhu, Feng Tang
Hypoxemia and hypercarbia resulting from a lack of surfactant is considered to be the primary mechanism underlying neonatal respiratory distress syndrome (NRDS). Surfactant replacement therapy may mitigate the symptoms of the disease by decreasing the surface tension of alveoli and facilitating inflation. However, surfactant serves an additional role in immunological processes. Therefore, it may be hypothesized that mechanisms of NRDS involving surfactant exert additional functions to promoting alveolar inflation...
October 26, 2017: Molecular Medicine Reports
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