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https://www.readbyqxmd.com/read/29044426/p2x7-receptor-blockade-prevents-preterm-birth-and-perinatal-brain-injury-in-a-mouse-model-of-intrauterine-inflammation
#1
Michael E Tsimis, Jun Lei, Jason M Rosenzweig, Hattan Arif, Yahya Shabi, Wael Alshehri, Connie C Talbot, K Maravet Baig-Ward, James Segars, Ernest M Graham, Irina Burd
The P2X7 is an adenosine triphosphate (ATP)-gated ion channel involved in several facets of immune activation and neuronal function through its importance in interleukin (IL)-1β secretion. We hypothesized that blockade of P2X7 would prevent perinatal brain injury associated with exposure to intrauterine (IU) inflammation. Dams received 45 mg/kg of Brilliant Blue G (BBG), a specific P2X7 receptor (P2X7R) antagonist, on gestation day 17 (E17) prior to administration of lipopolysaccharide (LPS) or phosphate-buffered saline (PBS)...
August 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29042740/arteriovenous-malformation-of-face
#2
Ashok Kumar, Meenu Mittal, Dhirendra Srivastava, Vipul Jaetli, Sunil Chaudhary
Arteriovenous malformations (AVMs) are rare congenital vascular malformations accounting only 1.5% of all vascular anomalies with 50% occurrence in the oral and maxillofacial region. It usually results from birth defects of the vasculature. A literature search revealed only few case reports of AVMs in the facial region. Lack of meticulous diagnosis, scarcity of knowledge, and paucity of literature can result in their exsanguinations leading to fatal hemorrhagic incidents after various dental procedures such as tooth extraction, surgical intervention, puncture wound, or blunt injury in involved area...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29039438/chondroitin-sulfate-proteoglycans-inhibit-the-migration-and-differentiation-of-oligodendrocyte-precursor-cells-and-its-counteractive-interaction-with-laminin
#3
Yi Sun, Yingping Deng, Mili Xiao, Lan Hu, Zhihua Li, Chao Chen
Cerebral white matter injury (WMI) is a recognized problem in premature infants, particularly in those with very low birth weights. Although the survival rate of premature infants has notably increased due to the advancement of modern medical treatments, their likelihood of developmental disability is higher than infants with an average birth weight. It has been previously reported that oligodendrocyte precursor cells (OPCs) are selectively vulnerable to WMI in premature infants. Following brain injury, glial scars may develop within the white matter...
September 27, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29038505/punctate-white-matter-lesions-associated-with-altered-brain-development-and-adverse-motor-outcome-in-preterm-infants
#4
Nora Tusor, Manon J Benders, Serena J Counsell, Phumza Nongena, Moegamad A Ederies, Shona Falconer, Andrew Chew, Nuria Gonzalez-Cinca, Joseph V Hajnal, Sunay Gangadharan, Vasiliki Chatzi, Karina J Kersbergen, Nigel Kennea, Denis V Azzopardi, A David Edwards
Preterm infants who develop neurodevelopmental impairment do not always have recognized abnormalities on cerebral ultrasound, a modality routinely used to assess prognosis. In a high proportion of infants, MRI detects punctate white matter lesions that are not seen on ultrasonography. To determine the relation of punctate lesions to brain development and early neurodevelopmental outcome we used multimodal brain MRI to study a large cohort of preterm infants. Punctate lesions without other focal cerebral or cerebellar lesions were detected at term equivalent age in 123 (24...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29034376/exploring-the-pregnant-guinea-pig-as-a-model-for-group-b-streptococcus-intrauterine-infection
#5
Maria I Harrell, Kellie Burnside, Christopher Whidbey, Jay Vornhagen, Kristina M Adams Waldorf, Lakshmi Rajagopal
Infection of the amniotic cavity remains a major cause of preterm birth, stillbirth, fetal injury and early onset, fulminant infections in newborns. Currently, there are no effective therapies to prevent in utero infection and consequent co-morbidities. This is in part due to the lack of feasible and appropriate animal models to understand mechanisms that lead to in utero infections. Use of mouse and rat models do not fully recapitulate human pregnancy, while pregnant nonhuman primate models are limited by ethical considerations, technical constraints, and cost...
September 2017: J Infect Dis Med
https://www.readbyqxmd.com/read/29025303/serum-surfactant-protein-d-as-a-marker-for-bronchopulmonary-dysplasia
#6
Suja Vinod, Andrew Gow, Barry Weinberger, Debra Potak, Mark Hiatt, Shaku Chandra, Thomas Hegyi
BACKGROUND: Lung epithelial cells express surfactant protein D (SP-D), a calcium-dependent lectin that plays an important role in antibody-independent pulmonary host defense. Previous studies have shown that it is found in the peripheral circulation in patients with pulmonary disease, likely because of translocation into the blood when lung epithelial barriers are disrupted by inflammation or acute injury. In adults, serum SP-D levels are biomarkers for the progression and severity of chronic lung disease...
October 12, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29022223/acute-kidney-injury-in-pregnancy-and-the-role-of-underlying-ckd-a-point-of-view-from-m%C3%A3-xico
#7
REVIEW
Margarita Ibarra-Hernández, Oralia Alejandra Orozco-Guillén, María Luz de la Alcantar-Vallín, Ruben Garrido-Roldan, María Patricia Jiménez-Alvarado, Kenia Benitez Castro, Francisco Villa-Villagrana, Mario Borbolla, Juan Manuel Gallardo-Gaona, Guillermo García-García, Norberto Reyes-Paredes, Giorgina Barbara Piccoli
The incidence of acute kidney injury in pregnancy (P-AKI) in developed countries is significantly lower than in developing ones, where it is estimated to range between 4 and 26%. Mortality in cases of P-AKI requiring dialysis is high, varying from 20 to 80%. In developing countries, clinical decisions are often based on the availability of services and not on needs. Prenatal surveillance in Mexico does not include serum creatinine, limiting the potential for early diagnosis of AKI and CKD and their differential diagnosis...
October 11, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/29018332/the-beneficial-effects-of-melatonin-administration-following-hypoxia-ischemia-in-preterm-fetal-sheep
#8
Tamara Yawno, Mawin Mahen, Jingang Li, Michael C Fahey, Graham Jenkin, Suzanne L Miller
Melatonin (MLT) is an endogenous hormone that controls circadian cycle. MLT has additional important properties that make it appealing as a neuroprotective agent-it is a potent anti-oxidant, with anti-apoptotic and anti-inflammatory properties. MLT is safe for administration during pregnancy or to the newborn after birth, and can reduce white matter brain injury under conditions of chronic fetal hypoxia. Accordingly, in the current study, we examined whether an intermediate dose of MLT could restore white matter brain development when administered after an acute hypoxic ischemic (HI) insult in preterm fetal sheep...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29017418/maternal-glucose-supplementation-in-a-murine-model-of-chorioamnionitis-alleviates-dysregulation-of-autophagy-in-fetal-brain
#9
Jun Lei, Wenyu Zhong, Ahmad Almalki, Hongxi Zhao, Hattan Arif, Rayyan Rozzah, Ghada Al Yousif, Nader Alhejaily, Dan Wu, Michael McLane, Irina Burd
Fetal brain injury induced by intrauterine inflammation is a major risk factor for adverse neurological outcomes, including cerebral palsy, cognitive dysfunction, and behavioral disabilities. There are no adequate therapies for neuronal protection to reduce fetal brain injury, especially new strategies that may apply promptly and conveniently. In this study, we explored the effect of maternal glucose administration in a mouse model of intrauterine inflammation at term. Our results demonstrated that maternal glucose supplementation significantly increased survival birth rate and improved the neurobehavioral performance of pups exposed to intrauterine inflammation...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/29016557/future-perspectives-of-cell-therapy-for-neonatal-hypoxic-ischemic-encephalopathy
#10
REVIEW
Makoto Nabetani, Haruo Shintaku, Takashi Hamazaki
Neonatal ischemic brain injury causes permanent motor-deficit cerebral palsy. Hypoxic-ischemic encephalopathy (HIE) is a very serious condition that can result in death and disability. In 1997, we reported that irreversible neuronal cell damage is induced by the elevation of intracellular Ca ion concentration that has occurred in sequence after excess accumulation of the excitatory neurotransmitter glutamate during ischemia. We also reported that hypothermia was effective in treating ischemic brain damage in rats by suppressing energy loss and raising intracellular Ca ion concentration...
October 10, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28992221/the-diabetes-pandemic-suggests-unmet-needs-for-ckd-with-diabetes-in-addition-to-diabetic-nephropathy-implications-for-pre-clinical-research-and-drug-testing
#11
Lidia Anguiano Gómez, Yutian Lei, Satish Kumar Devarapu, Hans-Joachim Anders
Curing 'diabetic nephropathy' is considered an unmet medical need of high priority. We propose to question the concept of 'diabetic nephropathy' that implies diabetes as the predominant cause of kidney disease, which may not apply to the majority of type 2 diabetics approaching end-stage kidney disease. With the onset of diabetes, hyperglycaemia/sodium-glucose co-transporter-2-driven glomerular hyperfiltration promotes nephron hypertrophy, which, however, on its own, causes proteinuria not before a decade later, probably because podocyte hypertrophy can usually accommodate an increase in the filtration surface...
July 31, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28991421/-unknown-title
#12
Kasey Buckles, Melanie Guldi
Early term birth is defined as birth at 37 or 38 weeks gestation. While infants born early term are not considered premature, the medical literature suggests that they have an increased risk of serious adverse health outcomes compared to infants born at term (39 or 40 weeks). Despite these known harms, we document a rise in early term births in the United States from 1989 to the mid-2000s, followed by a decline in recent years. We posit that the recent decline in early term births has been driven by changes in medical practice advocated by the American College of Obstetricians and Gynecologists, programs such as the March of Dimes’ "Worth the Wait" campaign, and by Medicaid policy...
2017: Journal of Policy Analysis and Management
https://www.readbyqxmd.com/read/28989045/reappraisal-of-neonatal-greenstick-skull-fractures-caused-by-birth-injuries-comparison-of-3-dimensional-reconstructed-computed-tomography-and-simple-skull-x-rays
#13
Sung Min Cho, Hyun Gi Kim, Soo Han Yoon, Ki Hong Chang, Moon Sung Park, Yul-Hyun Park, Mi Sun Choi
OBJECT: The most common birth-associated head injuries during vaginal delivery are cephalhematomas and subgaleal hematomas, and cranial injuries are rarely encountered. The neonate cranium is soft and pliable, and greenstick skull fractures (GSFs) are expected to be more frequent than linear or depressed fractures, but are extremely difficult to detect by simple skull x-ray (SSXR), and as a result, no reports have been issued on this topic to date. Recent reports suggest that technological advances in 3-dimensional reconstructed computed tomography (3DCT) have successfully enhanced the diagnostic accuracy for cranial fractures...
October 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28985201/-good-things-come-in-small-packages-application-of-exosome-based-therapeutics-in-neonatal-lung-injury
#14
REVIEW
Gareth R Willis, S Alex Mitsialis, Stella Kourembanas
Infants born at very low gestational age contribute disproportionately to neonatal morbidity and mortality. Advancements in antenatal steroid therapies and surfactant replacement have favored the survival of infants with ever-more immature lungs. Despite such advances in medical care, cardiopulmonary and neurological impairment prevail in constituting the major adverse outcomes for neonatal intensive care unit (NICU) survivors. With no single effective therapy for either the prevention or treatment of such neonatal disorders, the need for new tools to treat and reduce risk of further complications associated with extreme preterm birth is urgent...
October 6, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28984377/age-and-sex-related-effects-in-children-with-mild-traumatic-brain-injury-on-diffusion-magnetic-resonance-imaging-properties-a-comparison-of-voxelwise-and-tractography-methods
#15
Naomi J Goodrich-Hunsaker, Tracy J Abildskov, Garrett Black, Erin D Bigler, Daniel M Cohen, Leslie K Mihalov, Barbara A Bangert, H Gerry Taylor, Keith O Yeates
Although there are several techniques to analyze diffusion-weighted imaging, any technique must be sufficiently sensitive to detect clinical abnormalities. This is especially critical in disorders like mild traumatic brain injury (mTBI), where pathology is likely to be subtle. mTBI represents a major public health concern, especially for youth under 15 years of age. However, the developmental period from birth to 18 years is also a time of tremendous brain changes. Therefore, it is important to establish the degree of age- and sex-related differences...
October 6, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28973369/alterations-in-corneal-sensory-nerves-during-homeostasis-aging-and-after-injury-in-mice-lacking-the-heparan-sulfate-proteoglycan-syndecan-1
#16
Sonali Pal-Ghosh, Gauri Tadvalkar, Mary Ann Stepp
Purpose: To determine the impact of the loss of syndecan 1 (SDC1) on intraepithelial corneal nerves (ICNs) during homeostasis, aging, and in response to 1.5-mm trephine and debridement injury. Methods: Whole-mount corneas are used to quantify ICN density and thickness over time after birth and in response to injury in SDC1-null and wild-type (WT) mice. High-resolution three-dimensional imaging is used to visualize intraepithelial nerve terminals (INTs), axon fragments, and lysosomes in corneal epithelial cells using antibodies against growth associated protein 43 (GAP43), βIII tubulin, and LAMP1...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28972799/immune-function-a-missing-link-in-the-gender-disparity-in-preterm-neonatal-outcomes
#17
David N O'Driscoll, Catherine M Greene, Eleanor J Molloy
In neonatology, males exhibit a more severe disease course and poorer prognosis in many pathological states when compared to females. Perinatal brain injury, respiratory morbidity, and sepsis, among other complications, preferentially affect males. Preterm neonates (born <37 weeks gestation) display a particularly marked sexual disparity in pathology, especially at the borders of viability. The sex biases in preterm neonatal outcomes and underlying multifactorial mechanisms have been incompletely explored...
November 2017: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/28971027/hospital-trauma-level-s-association-with-outcomes-for-injured-pregnant-women-and-their-neonates-in-washington-state-1995-2012
#18
John Thomas Distelhorst, Michele A Soltis, Vijay Krishnamoorthy, Melissa A Schiff
BACKGROUND: Trauma occurs in 8% of all pregnancies. To date, no studies have evaluated the effect of the hospital's trauma designation level as it relates to birth outcomes for injured pregnant women. METHODS: This population-based, retrospective cohort study evaluated the association between trauma designation levels and injured pregnancy birth outcomes. We linked Washington State Birth and Fetal Death Certificate data and the Washington State Comprehensive Hospital Abstract Recording System...
July 2017: International Journal of Critical Illness and Injury Science
https://www.readbyqxmd.com/read/28965356/relationship-between-overweight-obesity-in-the-first-year-of-age-and-traumatic-dental-injuries-in-early-childhood-findings-from-a-birth-cohort-study
#19
Tássia Silvana Borges, Benjamin W Chaffee, Paulo Floriani Kramer, Eliane Gerson Feldens, Márcia Regina Vítolo, Carlos Alberto Feldens
The impact of traumatic dental injuries (TDI) in the primary dentition on oral health-related quality of life indicates the need for the planning of prevention strategies. The aim of this study was to assess whether anthropometric characteristics in early life are associated with TDI by preschool age MATERIALS AND METHODS: A birth cohort was recruited from the public healthcare system in the city of Porto Alegre, Brazil. Socio-demographic variables, type of birth, head circumference, weight and length were collected at birth (WHO standards)...
October 1, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28965006/measuring-childhood-maltreatment-to-predict-early-adult-psychopathology-comparison-of-prospective-informant-reports-and-retrospective-self-reports
#20
Joanne B Newbury, Louise Arseneault, Terrie E Moffitt, Avshalom Caspi, Andrea Danese, Jessie R Baldwin, Helen L Fisher
Both prospective informant-reports and retrospective self-reports may be used to measure childhood maltreatment, though both methods entail potential limitations such as underestimation and memory biases. The validity and utility of standard measures of childhood maltreatment requires clarification in order to inform the design of future studies investigating the mental health consequences of maltreatment. The present study assessed agreement between prospective informant-reports and retrospective self-reports of childhood maltreatment, as well as the comparative utility of both reports for predicting a range of psychiatric problems at age 18...
September 21, 2017: Journal of Psychiatric Research
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