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https://www.readbyqxmd.com/read/28823133/genetic-association-of-swine-leukocyte-antigen-class-ii-haplotypes-and-body-weight-in-microminipigs
#1
Tatsuya Matsubara, Masaki Takasu, Noriaki Imaeda, Naohito Nishii, Satoshi Takashima, Takashi Nishimura, Toshiaki Nishimura, Takashi Shiina, Asako Ando, Hitoshi Kitagawa
Objective: Microminipigs are a novel animal model with extensive applications in laboratory studies owing, in part, to their extremely small body sizes. In this study, the relationship between swine leukocyte antigen (SLA) class II haplotype and body weight was evaluated in the Microminipig population. Methods: A total of 1,900 haplotypes, covering SLA class II haplotypes Lr-0.7, Lr-0.23, Lr-0.17, Lr-0.37, Lr-0.16, Lr-0.11, Lr-0.13, and Lr-0.18, were analyzed in 950 piglets...
August 16, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28822742/strategy-set-shifting-and-response-inhibition-in-adult-rats-exposed-to-an-environmental-polychlorinated-biphenyl-mixture-during-adolescence
#2
Supida Monaikul, Paul Eubig, Stan Floresco, Susan Schantz
Converging evidence from studies with animal models and humans suggests that early developmental exposure to polychlorinated biphenyls (PCBs) leads to deficits in cognitive flexibility and inhibitory control. These processes are mediated to a large extent by the prefrontal cortex, thus we examined the effects of PCB exposure during adolescence-a period of robust prefrontal cortical development-on both processes. Specifically, we used operant set-shifting and differential reinforcement of low rates of responding (DRL) tasks to assess cognitive flexibility and response inhibition, respectively...
August 16, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28822268/neural-precursor-cells-derived-from-induced-pluripotent-stem-cells-exhibit-reduced-susceptibility-to-infection-with-a-neurotropic-coronavirus
#3
Vrushali Mangale, Brett S Marro, Warren C Plaisted, Craig M Walsh, Thomas E Lane
The present study examines the susceptibility of mouse induced pluripotent stem cell-derived neural precursor cells (iPSC-NPCs) to infection with the neurotropic JHM strain of mouse hepatitis virus (JHMV). Similar to NPCs derived from striatum of day 1 postnatal GFP-transgenic mice (GFP-NPCs), iPSC-derived NPCs (iPSC-NPCs) are able to differentiate into terminal neural cell types and express MHC class I and II in response to IFN-γ treatment. However, in contrast to postnatally-derived NPCs, iPSC-NPCs express low levels of carcinoembryonic antigen-cell adhesion molecule 1a (CEACAM1a), the surface receptor for JHMV, and are less susceptible to infection and virus-induced cytopathic effects...
August 16, 2017: Virology
https://www.readbyqxmd.com/read/28822057/short-term-exposure-to-enriched-environment-in-adult-rats-restores-mk-801-induced-cognitive-deficits-and-gabaergic-interneuron-immunoreactivity-loss
#4
Ane Murueta-Goyena, Naiara Ortuzar, Pascual Gargiulo, José Vicente Lafuente, Harkaitz Bengoetxea
Perinatal injections of N-methyl-D-aspartate (NMDA) receptor antagonist in rodents emulate some cognitive impairments and neurochemical alterations, such as decreased GABAergic (gamma aminobutyric acid) interneuron immunoreactivity, also found in schizophrenia. These features are pervasive, and developing neuroprotective or neurorestorative strategies is of special interest. In this work, we aimed to investigate if a short exposure to enriched environment (EE) in early adulthood (P55-P73) was an effective strategy to improve cognitive dysfunction and to restore interneuron expression in medial prefrontal cortex (mPFC) and hippocampus (HPC)...
August 18, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28821493/postnatal-management-of-asymptomatic-congenital-pulmonary-malformations-moving-towards-evidence-based-decisions
#5
EDITORIAL
Christophe Delacourt
No abstract text is available yet for this article.
September 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28820910/impaired-dendritic-growth-and-positioning-of-cortical-pyramidal-neurons-by-activation-of-aryl-hydrocarbon-receptor-signaling-in-the-developing-mouse
#6
Eiki Kimura, Ken-Ichiro Kubo, Toshihiro Endo, Wenting Ling, Kazunori Nakajima, Masaki Kakeyama, Chiharu Tohyama
The basic helix-loop-helix (bHLH) transcription factors exert multiple functions in mammalian cerebral cortex development. The aryl hydrocarbon receptor (AhR), a member of the bHLH-Per-Arnt-Sim subfamily, is a ligand-activated transcription factor reported to regulate nervous system development in both invertebrates and vertebrates, but the functions that AhR signaling pathway may have for mammalian cerebral cortex development remains elusive. Although the endogenous ligand involved in brain developmental process has not been identified, the environmental pollutant dioxin potently binds AhR and induces abnormalities in higher brain function of laboratory animals...
2017: PloS One
https://www.readbyqxmd.com/read/28820907/positive-regulatory-interactions-between-yap-and-hedgehog-signalling-in-skin-homeostasis-and-bcc-development-in-mouse-skin-in-vivo
#7
Bassem Akladios, Veronica Mendoza Reinoso, Jason E Cain, Taopeng Wang, Duncan L Lambie, D Neil Watkins, Annemiek Beverdam
Skin is a highly plastic tissue that undergoes tissue turnover throughout life, but also in response to injury. YAP and Hedgehog signalling play a central role in the control of epidermal stem/progenitor cells in the skin during embryonic development, in postnatal tissue homeostasis and in skin carcinogenesis. However, the genetic contexts in which they act to control tissue homeostasis remain mostly unresolved. We provide compelling evidence that epidermal YAP and Hedgehog/GLI2 signalling undergo positive regulatory interactions in the control of normal epidermal homeostasis and in basal cell carcinoma (BCC) development, which in the large majority of cases is caused by aberrant Hedgehog signalling activity...
2017: PloS One
https://www.readbyqxmd.com/read/28819945/adolescent-pregnancies-complications-birth-outcomes-and-the-possible-solutions
#8
Tayfur Çift, Engin Korkmazer, Muzaffer Temur, Berk Bulut, Bariş Korkmaz, Onur Ozdenoğlu, Cem Akaltun, Emin Üstünyurt
OBJECTIVES: In this study we aim to evaluate antenatal, perinatal and postnatal outcomes and complications of adolescent pregnancies, as well as to discuss the social and psychological consequences of these pregnancies. MATERIAL AND METHODS: We compare a total of 243 pregnant women at age 14-18 years to a vast control group at age 19-36 who all delivered at Bursa Yüksek Ihtisas Training and Research Hospital between years 2005-2014. RESULTS: Antenatal care (folic acid supplementation, pre-conception counseling) was significantly higher in adolescent pregnancy group...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28819305/cardiorespiratory-pathogenesis-of-sickle-cell-disease-in-a-mouse-model
#9
Jun Ren, Xiuqing Ding, Marie Trudel, John J Greer, Joanna E MacLean
The nature and development of cardiorespiratory impairments associated with sickle cell disease are poorly understood. Given that the mechanisms of these impairments cannot be addressed adequately in clinical studies, we characterized cardiorespiratory pathophysiology from birth to maturity in the sickle cell disease SAD mouse model. We identified two critical phases of respiratory dysfunction in SAD mice; the first prior to weaning and the second in adulthood. At postnatal day 3, 43% of SAD mice showed marked apneas, anemia, and pulmonary vascular congestion typical of acute chest syndrome; none of these mice survived to maturity...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819108/spag6-mutant-mice-have-defects-in-development-and-function-of-spiral-ganglion-neurons-apoptosis-and-higher-sensitivity-to-paclitaxel
#10
Xiaofei Li, Lei Xu, Gaoying Sun, Xianmin Wu, Xiaohui Bai, Jianfeng Li, Jerome F Strauss, Zhibing Zhang, Haibo Wang
Mammalian Sperm Associated Antigen 6 (SPAG6) is the orthologue of Chlamydomonas PF16, a protein localized in the axoneme central apparatus. Recent studies showed that Spag6 has a role in brain neuronal proliferation and differentiation. The mammalian spiral ganglion neurons (SGNs) are specialzed bipolar neurons in the inner ear. However, the role of SPAG6 in SGN has not been elucidated. Therefore, We hypothesized that a Spag6 knockout would affect the development and function of SGNs. We utilized Spag6-deficient mice and SGN explants to define the role of SPAG6...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818870/fra-2-negatively-regulates-postnatal-alveolar-septation-by-modulating-myofibroblast-function
#11
Kazuyuki Tsujino, John T Li, Tatsuya Tsukui, Xin Ren, Latifa Bakiri, Erwin F Wagner, Dean Sheppard
Mice that globally over-express the transcription factor, Fos-related antigen-2 (Fra-2), develop extensive pulmonary fibrosis and pulmonary vascular remodeling. To determine if these phenotypes are a consequence of ectopic Fra-2 expression in vascular smooth muscle cells and myofibroblasts, we generated mice that over-express Fra-2 specifically in these cells types (α-SMA-rtTA; tetO-Fra-2). Surprisingly, these mice did not develop vascular remodeling or pulmonary fibrosis, but developed a spontaneous emphysema-like phenotype characterized by alveolar enlargement...
August 17, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28818853/interobserver-agreement-and-image-quality-of-functional-cardiac-ultrasound-measures-used-in-a-randomised-trial-of-delayed-cord-clamping-in-preterm-infants
#12
Himanshu Popat, Kristy P Robledo, Lucille Sebastian, Nicholas Evans, Andrew Gill, Martin Kluckow, Sanjay Sinhal, Koert de Waal, William Tarnow-Mordi, David Osborn
OBJECTIVE: Functional cardiac ultrasound measures are used clinically and in trials for assessing the haemodynamic status of newborn infants. Superior vena cava (SVC) flow and right ventricular output (RVO) are established measures of systemic blood flow on the first postnatal day. The objective was to assess image quality and interobserver agreement of these measures in preterm infants enrolled in a randomised trial of immediate versus delayed cord clamping. DESIGN AND SETTING: Image quality and interobserver agreement for SVC flow, RVO and ductus arteriosus (DA) size were assessed on measurements taken at 3-6, 6-12 and 20-28 hours for the first 10 infants enrolled at each of four sites (total 40)...
August 17, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28818585/-vitamin-k-in-the-neonate-recommendations-update
#13
J-M Hascoët, J-C Picaud, A Lapillonne, C Boithias-Guerot, P Bolot, E Saliba
Hemorrhagic disease of the newborn is not common but may be very serious, with cerebral, hepatic, or adrenal gland bleeding. Its prevention is based upon vitamin K1 administration from birth. Scientific studies to validate appropriate treatment policies are scarce, with recommendations coming from expert opinions, retrospective studies, or controversies on possible side effects. After analysis of recent literature data, we propose an oral administration of three doses of 2mg of vitamin K1 at birth, at discharge from the maternity ward, and at 1 month postnatal age for term infants...
August 14, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28817803/developmental-dysfunction-of-vip-interneurons-impairs-cortical-circuits
#14
Renata Batista-Brito, Martin Vinck, Katie A Ferguson, Jeremy T Chang, David Laubender, Gyorgy Lur, James M Mossner, Victoria G Hernandez, Charu Ramakrishnan, Karl Deisseroth, Michael J Higley, Jessica A Cardin
GABAergic interneurons play important roles in cortical circuit development. However, there are multiple populations of interneurons and their respective developmental contributions remain poorly explored. Neuregulin 1 (NRG1) and its interneuron-specific receptor ERBB4 are critical genes for interneuron maturation. Using a conditional ErbB4 deletion, we tested the role of vasoactive intestinal peptide (VIP)-expressing interneurons in the postnatal maturation of cortical circuits in vivo. ErbB4 removal from VIP interneurons during development leads to changes in their activity, along with severe dysregulation of cortical temporal organization and state dependence...
August 16, 2017: Neuron
https://www.readbyqxmd.com/read/28817389/congenital-anomalies-of-the-optic-disc-insights-from-optical-coherence-tomography-imaging
#15
Karen W Jeng-Miller, Dean M Cestari, Eric D Gaier
PURPOSE OF REVIEW: Congenital anomalies of the optic nerve are rare but significant causes of visual dysfunction in children and adults. Accurate diagnosis is dependent on a thorough funduscopic examination, but can be enhanced by imaging information garnered from optical coherence tomography (OCT). We review common congenital optic nerve anomalies, including optic disc pit, optic nerve coloboma, morning glory disc anomaly, and hypoplasia of the optic nerve, review their systemic associations, and discuss insights from OCT imaging...
August 16, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28816587/dna-methylation-independent-growth-restriction-and-altered-developmental-programming-in-a-mouse-model-of-preconception-male-alcohol-exposure
#16
Richard C Chang, William M Skiles, S Chronister Sarah, Haiqing Wang, Gabrielle I Sutton, Yudhishtar S Bedi, Matthew Snyder, Charles R Long, Michael C Golding
The preconception environment is a significant modifier of dysgenesis and the development of environmentally-induced disease. To date, Fetal Alcohol Spectrum Disorders (FASDs) have been exclusively associated with maternal exposures, yet emerging evidence suggests male-inherited alterations in the developmental program of sperm may be relevant to the growth-restriction phenotypes of this condition. Using a mouse model of voluntary consumption, we find chronic preconception male ethanol exposure associates with fetal growth restriction, decreased placental efficiency, abnormalities in cholesterol trafficking, sex-specific alterations in the genetic pathways regulating hepatic fibrosis, and disruptions in the regulation of imprinted genes...
August 17, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28816096/management-of-severe-pulmonary-hemorrhage-in-a-neonate-on-veno-arterial-ecmo-by-the-temporary-clamping-of-the-endotracheal-tube-a-case-report
#17
Vaclav Vobruba, Tomas Grus, Frantisek Mlejnsky, Jan Belohlavek, Jan Hridel, Lukas Lambert
Severe pulmonary hemorrhage in the newborn is an infrequent, but life-threatening, event. A newborn with persistent pulmonary hypertension and a large persistent ductus arteriosus and open foramen ovale presented with hypoxemia and progressive right heart failure shortly after birth, requiring veno-arterial extracorporeal membrane oxygenation (ECMO) support. Twenty minutes after the initiation of ECMO, the patient developed severe pulmonary hemorrhage refractory to conventional treatment. As a last resort, the endotracheal tube was clamped...
August 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28815096/a-case-of-congenital-brainstem-oligodendroglioma-pathology-findings-and-review-of-the-literature
#18
Stefan Kostadinov, Suzanne de la Monte
Congenital and perinatal primary brain neoplasms are extremely rare. Brainstem neoplasms in the perinatal and neonatal period are typically of high-grade nature and have poor prognoses with survival rates of less than 2 years from diagnosis. Herein, we report an unusual case of congenital anaplastic oligodendroglioma that arose in the pons and was detected as diffuse pontine glioma on in utero imaging studies during prenatal evaluation at 26 weeks' gestation. A male infant was delivered at 36.4 weeks of gestation via Cesarean section who developed progressive dyspnea shortly after birth...
2017: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/28814964/milk-disrupts-p53-and-dnmt1-the-guardians-of-the-genome-implications-for-acne-vulgaris-and-prostate-cancer
#19
Bodo C Melnik
There is accumulating evidence that milk shapes the postnatal metabolic environment of the newborn infant. Based on translational research, this perspective article provides a novel mechanistic link between milk intake and milk miRNA-regulated gene expression of the transcription factor p53 and DNA methyltransferase 1 (DNMT1), two guardians of the human genome, that control transcriptional activity, cell survival, and apoptosis. Major miRNAs of milk, especially miRNA-125b, directly target TP53 and complex p53-dependent gene regulatory networks...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28814778/in-vivo-and-in-vitro-sex-differences-in-the-dendritic-morphology-of-developing-murine-hippocampal-and-cortical-neurons
#20
Kimberly P Keil, Sunjay Sethi, Machelle D Wilson, Hao Chen, Pamela J Lein
Altered dendritic morphology is common in neurodevelopmental disorders (NDDs), many of which show sex biases in prevalence, onset and/or severity. However, whether dendritic morphology varies as a function of sex in juvenile mice or primary neuronal cell cultures is largely unknown even though both are widely used models for studying NDDs. To address this gap, we quantified dendritic morphology in CA1 pyramidal hippocampal and adjacent somatosensory pyramidal cortical neurons from male and female postnatal day (P)28 C57BL/6J mice...
August 16, 2017: Scientific Reports
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