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Neonatal pathology

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https://www.readbyqxmd.com/read/28229104/prenatal-stressors-in-rodents-effects-on-behavior
#1
REVIEW
Marta Weinstock
The current review focuses on studies in rodents published since 2008 and explores possible reasons for any differences they report in the effects of gestational stress on various types of behavior in the offspring. An abundance of experimental data shows that different maternal stressors in rodents can replicate some of the abnormalities in offspring behavior observed in humans. These include, anxiety, in juvenile and adult rats and mice, assessed in the elevated plus maze and open field tests and depression, detected in the forced swim and sucrose-preference tests...
February 2017: Neurobiology of Stress
https://www.readbyqxmd.com/read/28225480/nmda-receptor-subunit-and-camkii-changes-in-rat-hippocampus-by-congenital-hcmv-infection-a-mechanism-for-learning-and-memory-impairment
#2
De Wu, Li Yang, Xiaosong Bu, Jiulai Tang, Xiaocheng Fan
The aim of this study was to investigate the effects of congenital human cytomegalovirus infection on the expression levels of N-methyl-D-aspartate receptors (NRs) and Ca/calmodulin-dependent protein kinase II (CaMKII) in the hippocampal neurons of neonatal Sprague-Dawley (SD) rats. Pregnant SD rats were divided into an experimental group and a control group (n=10 in each group). Spatial learning and memory of the offspring of SD rats were evaluated using the Morris water-maze test. Pathological studies of hippocampus sections were carried out...
February 20, 2017: Neuroreport
https://www.readbyqxmd.com/read/28224701/pathogenic-role-of-anti-srp-and-anti-hmgcr-antibodies-in-necrotizing-myopathies-myofiber-atrophy-and-impairment-of-muscle-regeneration-in-necrotizing-autoimmune-myopathies
#3
Louiza Arouche-Delaperche, Yves Allenbach, Damien Amelin, Corinna Preusse, Vincent Mouly, Wladimir Mauhin, Gaelle Dzangue Tchoupou, Laurent Drouot, Olivier Boyer, Werner Stenzel, Gillian Butler-Browne, Olivier Benveniste
OBJECTIVE: Immune mediated necrotizing myopathies (IMNM) may be associated with either anti-SRP or anti-HMGCR antibodies (Abs) and the titer of these Abs is correlated with the disease activity. We investigated if anti-SRP and anti-HMGCR Abs could be involved in muscle damages. METHODS: Muscle biopsies of patients were analyzed for atrophy and regeneration, by measuring the fibers size and by performing immunostaining of neonatal myosin heavy chain. To further understand the role of the Abs in the pathology, we performed muscle cell co-culture with the Abs...
February 22, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28223455/acute-fetal-demise-with-first-trimester-maternal-infection-resulting-from-listeria-monocytogenes-in-a-nonhuman-primate-model
#4
Bryce Wolfe, Gregory J Wiepz, Michele Schotzko, Gennadiy I Bondarenko, Maureen Durning, Heather A Simmons, Andres Mejia, Nancy G Faith, Emmanuel Sampene, Marulasiddappa Suresh, Sophia Kathariou, Charles J Czuprynski, Thaddeus G Golos
Infection with Listeria monocytogenes during pregnancy is associated with miscarriage, preterm birth, and neonatal complications, including sepsis and meningitis. While the risk of these conditions is thought to be greatest during the third trimester of pregnancy, the determinants of fetoplacental susceptibility to infection, the contribution of gestational age, and the in vivo progression of disease at the maternal-fetal interface are poorly understood. We developed a nonhuman primate model of listeriosis to better understand antecedents of adverse pregnancy outcomes in early pregnancy...
February 21, 2017: MBio
https://www.readbyqxmd.com/read/28219838/natural-helper-cells-are-associated-with-the-exacerbated-airway-inflammation-seen-during-rsv-reinfection-of-neonatally-primed-mice
#5
Jianqi Wu, Haiyan Hu, Lei Xu, Feifei Qi, Song Bai, Yulin Cui, Ruonan Chai, Dandan Wang, Beixing Liu
Infection with respiratory syncytial virus (RSV) in neonatal mice causes more aggressive airway disease when the mice are reinfected with the same virus as adults. However, the underlying mechanisms responsible for this phenomenon are not entirely defined. Natural helper (NH) cells are considered a key factor for virus-induced or exacerbated airway inflammation and airway hyper-responsiveness by producing type 2 cytokines. To confirm whether NH cells are involved in the aggravated lung pathology seen during reinfection, BALB/c mice were initially infected as neonates and reinfected in adulthood...
February 16, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28219359/congenital-tuberculosis-in-an-extremely-preterm-infant-conceived-after-in-vitro-fertilization-case-report
#6
Veronica Samedi, Stephen K Field, Essa Al Awad, Gregory Ratcliffe, Kamran Yusuf
BACKGROUND: Congenital tuberculosis is a rare manifestation of tuberculosis. The diagnosis is often delayed, especially in preterm neonates because of the non-specific clinical presentation and the lack of awareness of maternal disease prior to pregnancy. CASE PRESENTATION: We report a case of congenital tuberculosis in an infant born at 24 weeks of gestation to a mother who presented with uncontrolled seizures during preterm labor. Maternal diagnosis was initially made by placental pathology, and later confirmed by isolation of Mycobacterium tuberculosis in urine, gastric aspirates and sputum...
February 20, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28218564/-a-brief-of-gestational-diabetes-mellitus-risk-factors-and-current-criteria-of-diagnosis
#7
Zahra Al-Aissa, Orsolya Hadarits, Klára Rosta, András Zóka, János Rigó, Gábor Firneisz, Anikó Somogyi
Diabetes is one of the most common metabolic disorders that may cause pathological pregnancy. Treating diabetes recognized during pregnancy results in lowering maternal and fetal complications. These patients present higher risk for excessive weight gain, preeclampsia, delivery with cesarean sections, high risk of developing type 2 diabetes and cardiovascular disease in the future. Fetuses of mothers with gestational diabetes are at higher risk for macrosomia and birth trauma, after delivery they present higher risk of developing neonatal hypoglycemia, hyperbilirubinemia, and respiratory distress syndrome...
February 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28213059/multidisciplinary-team-learning-in-the-management-of-the-morbidly-adherent-placenta-outcome-improvements-over-time
#8
Alireza A Shamshirsaz, Karin A Fox, Hadi Erfani, Steven L Clark, Bahram Salmanian, B Wycke Baker, Michael Coburn, Amir A Shamshirsaz, Zhoobin H Bateni, Jimmy Espinoza, Ahmed A Nassr, Edwina J Popek, Shiu-Ki Hui, Jun Teruya, Celestine Shauching Tung, Jeffery A Jones, Martha Rac, Gary A Dildy, Michael A Belfort
BACKGROUND: Morbidly adherent placenta (MAP) is a serious obstetric complication causing mortality and morbidity. OBJECTIVE: To evaluate whether outcomes of patients with morbidly adherent placenta improve with increasing experience within a well-established multidisciplinary team at a single referral center. STUDY DESIGN: All singleton pregnancies with pathology-confirmed MAP (including placenta accreta, increta or percreta) managed by a multidisciplinary team between January 2011 and August 2016 were included in this retrospective study...
February 14, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28202123/-expression-of-long-non-coding-rna-nanci-in-lung-tissues-of-neonatal-mice-with-hyperoxia-induced-lung-injury-and-its-regulatory-effect-on-nkx2-1
#9
Yuan Zhang, Huai-Ping Cheng, Tian-Ping Bao, Xiu-Gui Wang, Zhao-Fang Tian
OBJECTIVE: To investigate the expression of long non-coding RNA NANCI in lung tissues of neonatal mice with hyperoxia-induced lung injury and its regulatory effect on NKX2.1. METHODS: A total of 48 neonatal C57BL/6J mice were randomly divided into an air group and a hyperoxia group, with 24 mice in each group. Each group was further divided into 7-day, 14-day, and 21-day subgroups, with 8 mice in each subgroup. The mice in the air group were fed in the indoor environment (FiO(2)=21%) and those in the hyperoxia group were fed in a high-oxygen box (oxygen concentration: >95%)...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28199771/thyroid-dysfunction-in-children-with-autism-spectrum-disorder-is-associated-with-folate-receptor-alpha-autoimmune-disorder
#10
Richard E Frye, Rebecca Wynne, Shannon Rose, John Slattery, Leanna Delhey, Marie Tippett, Stephen G Kahler, Sirish C Bennuri, Stepan Melnyk, Jeffrey M Sequeira, Edward Quadros
Folate receptor α (FRα) autoantibodies (FRAAs) are prevalent in Autism Spectrum Disorder (ASD). FRAAs disrupt folate transport across the blood-brain barrier by binding to the FRα. Thyroid dysfunction is frequently found in children with ASD. We measured blocking and binding FRAAs and thyroid stimulating hormone (TSH), free T4 (FT4), total T3 (TT3), reverse T3 (rT3), thyroid releasing hormone (TRH) and other metabolites in 87 children with ASD, 84 of whom also underwent behavior and cognition testing and in 42 of whom FRAAs, TSH and FT4 were measured at two time points...
February 15, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28194573/hyponatremia-and-cyst-growth-in-neonatal-polycystic-kidney-disease-a-case-for-aquaretics
#11
EDITORIAL
Detlef Bockenhauer
Hyponatremia is a common complication in neonatal polycystic kidney disease and is thought to be due to water retention. Aquaretics are drugs that promote free water excretion by blocking the arginine vasopressin receptor type 2 (AVPR2) in the collecting duct and thus impair urinary concentration. AVPR2 is also a key stimulant for cyclic AMP production in the collecting duct and in this way promotes cyst proliferation and pathologic kidney growth in autosomal dominant polycystic kidney disease (ADPKD). Consequently, the aquaretic tolvaptan is now used to slow down progression of ADPKD in adult patients...
February 13, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28194212/clinical-predictors-of-chest-radiographic-abnormalities-in-young-children-hospitalized-with-bronchiolitis-a-single-center-study
#12
Ga Ram Kim, Min Sun Na, Kyung Suk Baek, Seung Jin Lee, Kyung Suk Lee, Young Ho Jung, Hye Mi Jee, Tae Hee Kwon, Man Yong Han, Youn Ho Sheen
PURPOSE: Chest radiography is often performed on patients hospitalized with typical clinical manifestations of bronchiolitis. We aimed to determine the proportion of subjects with pathologic chest radiographic findings and the clinical predictors associated with pathologic chest radiographic findings in young children admitted with the typical presentation of bronchiolitis. METHODS: We obtained the following data at admission: sex, age, neonatal history, past history of hospitalization for respiratory illnesses, heart rate, respiratory rate, the presence of fever, total duration of fever, oxygen saturation, laboratory parameters (i...
December 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28192119/leflunomide-induces-nad-p-h-quinone-dehydrogenase-1-enzyme-via-the-aryl-hydrocarbon-receptor-in-neonatal-mice
#13
Amrit Kumar Shrestha, Ananddeep Patel, Renuka T Menon, Weiwu Jiang, Lihua Wang, Bhagavatula Moorthy, Binoy Shivanna
Aryl hydrocarbon receptor (AhR) has been increasingly recognized to play a crucial role in normal physiological homeostasis. Additionally, disrupted AhR signaling leads to several pathological states in the lung and liver. AhR activation transcriptionally induces detoxifying enzymes such as cytochrome P450 (CYP) 1A and NAD(P)H quinone dehydrogenase 1 (NQO1). The toxicity profiles of the classical AhR ligands such as 3-methylcholanthrene and dioxins limit their use as a therapeutic agent in humans. Hence, there is a need to identify nontoxic AhR ligands to develop AhR as a clinically relevant druggable target...
February 10, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28188950/hemophagocytic-lymphohistiocytosis-in-a-neonate-case-report
#14
Pari Zarrini, Ziba Mosayebi, Asghar Ramyar, Hosein Dalili
 Hemophagocytic lymphohistiocytosis (HLH) is a syndrome of pathologic immune activation, occurring as either a familial disorder or a sporadic condition, in association with a variety of triggers. This article will introduce a neonate with HLH in Iran. We report a case of HLH presenting with respiratory distress and fever, hepatosplenomegaly, jaundice and pancytopenia on the second day of life. Typical clinical and laboratory findings were detected in the neonate. HLH was diagnosed according to HLH-2004 guidelines...
January 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28188211/cluh-regulates-mitochondrial-metabolism-by-controlling-translation-and-decay-of-target-mrnas
#15
Désirée Schatton, David Pla-Martin, Marie-Charlotte Marx, Henriette Hansen, Arnaud Mourier, Ivan Nemazanyy, Alberto Pessia, Peter Zentis, Teresa Corona, Vangelis Kondylis, Esther Barth, Astrid C Schauss, Vidya Velagapudi, Elena I Rugarli
Mitochondria are essential organelles that host crucial metabolic pathways and produce adenosine triphosphate. The mitochondrial proteome is heterogeneous among tissues and can dynamically change in response to different metabolic conditions. Although the transcriptional programs that govern mitochondrial biogenesis and respiratory function are well known, posttranscriptional regulatory mechanisms remain unclear. In this study, we show that the cytosolic RNA-binding protein clustered mitochondria homologue (CLUH) regulates the expression of a mitochondrial protein network supporting key metabolic programs required under nutrient deprivation...
February 10, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28179697/antenatal-renal-pelvic-dilatation-and-foetal-outcomes-review-of-cases-from-a-tertiary-care-center-in-karachi-pakistan
#16
Ruqiya Afroz, Shafia Shakoor, Muhammad Sohail Salat, Shama Munim
OBJECTIVE: To determine the incidence of antenatal renal pelvic dilatation to evaluate antenatal resolution/ progression and post-natal outcome. METHODS: This retrospective study was conducted at the Aga Khan University Hospital, Karachi, and comprised data of all women found with renal pelvic dilatation in antenatal scans between January 2011 and December 2013. A cut-off of 5mm was used to diagnose renal pelvic dilatation. Renal pelvic dilatation was categorised into three groups: mild (5-6mm in second trimester and 5-9mm in third trimester), moderate (7-10mm in second trimester and 10-15 in third) and severe (more than 10mm in second trimester and more than 15mm in third trimester)...
December 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28179532/a-murine-herpesvirus-closely-related-to-ubiquitous-human-herpesviruses-causes-t-cell-depletion
#17
Swapneel J Patel, Guoyan Zhao, Vinay R Penna, Eugene Park, Elvin J Lauron, Ian B Harvey, Wandy L Beatty, Beatrice Plougastel-Douglas, Jennifer Poursine-Laurent, Daved H Fremont, David Wang, Wayne M Yokoyama
Mouse models of human herpesvirus infections The human roseoloviruses HHV6A, HHV6B, and HHV7 comprise the Roseolovirus genus of the human Betaherpesvirinae subfamily. Infections with these viruses have been implicated in many diseases; however, it has been challenging to establish infections with Roseoloviruses as direct drivers of pathology because they are nearly ubiquitous and display species-specific tropism. Furthermore, controlled study of infection has been hampered by the lack of experimental models, and until now, a mouse roseolovirus has not been identified...
February 8, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28176246/isorhamnetin-protects-against-cardiac-hypertrophy-through-blocking-pi3k-akt-pathway
#18
Lu Gao, Rui Yao, Yuzhou Liu, Zheng Wang, Zhen Huang, Binbin Du, Dianhong Zhang, Leiming Wu, Lili Xiao, Yanzhou Zhang
Isorhamnetin, a flavonoid compound extracted from the Chinese herb Hippophae rhamnoides L., is well known for its anti-inflammatory, anti-oxidative, anti-adipogenic, anti-proliferative, and anti-tumor activities. However, the role of isorhamnetin in cardiac hypertrophy has not been reported. The aims of the present study were to find whether isorhamnetin could alleviate cardiac hypertrophy and to define the underlying molecular mechanisms. Here, we investigated the effects of isorhamnetin (100 mg/kg/day) on cardiac hypertrophy induced by aortic banding in mice...
February 7, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28174241/development-of-a-human-cardiac-organoid-injury-model-reveals-innate-regenerative-potential
#19
Holly K Voges, Richard J Mills, David A Elliott, Robert G Parton, Enzo R Porrello, James E Hudson
The adult human heart possesses a limited regenerative potential following an ischemic event, and undergoes a number of pathological changes in response to injury. While cardiac regeneration has been documented in zebrafish and neonatal mouse hearts, it is currently unknown whether the immature human heart is capable of undergoing complete regeneration. Combined progress in pluripotent stem cell differentiation and tissue engineering has facilitated the development of human cardiac organoids (hCO), which resemble fetal heart tissue and can be used to address this important knowledge gap...
February 7, 2017: Development
https://www.readbyqxmd.com/read/28168989/pediatric-surgical-capacity-in-africa-current-status-and-future-needs
#20
Asra Toobaie, Sherif Emil, Doruk Ozgediz, Sanjay Krishnaswami, Dan Poenaru
BACKGROUND: African pediatric surgery (PS) faces multiple challenges. Information regarding existing resources is limited. We surveyed African pediatric surgeons to determine available resources and clinical, educational, and collaborative needs. METHODS: Members of the Pan-African Pediatric Surgical Association (PAPSA) and the Global Pediatric Surgery Network (GPSN) completed a structured email survey covering PS providers, facilities, resources, workload, education/training, disease patterns, and collaboration priorities...
January 29, 2017: Journal of Pediatric Surgery
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