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causes of prematurity

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https://www.readbyqxmd.com/read/28431961/ionizing-radiation-induces-long-term-senescence-in-endothelial-cells-through-mitochondrial-respiratory-complex-ii-dysfunction-and-superoxide-generation
#1
Audrey Lafargue, Charlotte Degorre, Isabelle Corre, Marie-Clotilde Alves-Guerra, Marie-Hélène Gaugler, François Vallette, Claire Pecqueur, François Paris
Ionizing radiation causes oxidative stress, leading to acute and late cellular responses. We previously demonstrated that irradiation of non-proliferating endothelial cells, as observed in normal tissues, induces early apoptosis, which can be inhibited by pretreatment with Sphingosine-1-Phosphate. We now propose to better characterize the long-term radiation response of endothelial cells by studying the molecular pathways associated with senescence and its link with acute apoptosis. First, senescence was validated in irradiated quiescent microvascular HMVEC-L in a dose- and time-dependent manner by SA β-galactosidase staining, p16(Ink4a) and p21(Waf1) expression, pro-inflammatory IL-8 secretion and DNA damage response activation...
April 18, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28431832/unravelling-the-mysteries-of-sudden-unexpected-death-in-epilepsy
#2
K G Hampel, R Rocamora Zuñiga, C M Quesada
INTRODUCTION: Sudden unexpected death in epilepsy (SUDEP) is the most frequent cause of premature death in epileptic patients. Most SUDEP events occur at night and frequently go unnoticed; the exact pathophysiological mechanisms of this phenomenon therefore remain undetermined. Nevertheless, most cases of SUDEP are attributed to an infrequent yet extremely severe complication of epileptic seizures. DEVELOPMENT: We conducted a systematic literature search on PubMed...
April 18, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28431562/effects-of-the-common-polymorphism-in-the-human-aldehyde-dehydrogenase-2-aldh2-gene-on-the-lung
#3
Aoi Kuroda, Ahmed E Hegab, Gao Jingtao, Shuji Yamashita, Nobuyuki Hizawa, Tohru Sakamoto, Hideyasu Yamada, Satoshi Suzuki, Makoto Ishii, Ho Namkoong, Takanori Asakura, Mari Ozaki, Hiroyuki Yasuda, Junko Hamamoto, Shizuko Kagawa, Kenzo Soejima, Tomoko Betsuyaku
BACKGROUND: Aldehyde dehydrogenases (ALDHs) play a major role in detoxification of aldehydes. High expression of ALDHs is a marker for stem cells of many organs including the lungs. A common polymorphism in ALDH2 gene (ALDH2*2) results in inactivation of the enzyme and is associated with alcohol flushing syndrome and increased risk for cardiovascular and Alzheimer's diseases and some cancers. The effect of this ALDH2 polymorphism on the lung and its stem cells has not been thoroughly examined...
April 21, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28428831/cord-blood-hematopoietic-cells-from-preterm-infants-display-altered-dna-methylation-patterns
#4
Olivia M de Goede, Pascal M Lavoie, Wendy P Robinson
BACKGROUND: Premature infants are highly vulnerable to infection. This is partly attributable to the preterm immune system, which differs from that of the term neonate in cell composition and function. Multiple studies have found differential DNA methylation (DNAm) between preterm and term infants' cord blood; however, interpretation of these studies is limited by the confounding factor of blood cell composition. This study evaluates the epigenetic impact of preterm birth in isolated hematopoietic cell populations, reducing the concern of cell composition differences...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28427844/cost-effectiveness-of-influenza-vaccination-in-patients-with-acute-coronary-syndrome-in-korea
#5
Jinuk Suh, Boyeon Kim, Yunseok Yang, Dong-Churl Suh, Eunyoung Kim
BACKGROUND: Influenza can cause cardiovascular abnormalities by inappropriately activating the coagulation cascade. Therefore, influenza vaccination is important because it decreases the risk of hospitalization for and mortality associated with heart disease. In particular, it reduces the occurrence of major adverse cardiovascular events (MACEs) in acute coronary syndrome (ACS) patients. Our study aimed to estimate the disease burden of MACEs and its related direct and indirect costs in ACS patients...
April 17, 2017: Vaccine
https://www.readbyqxmd.com/read/28427423/analysis-of-inequality-in-maternal-and-child-health-outcomes-and-mortality-from-2000-to-2013-in-china
#6
Yanting Li, Yimin Zhang, Shuai Fang, Shanshan Liu, Xinyu Liu, Ming Li, Hong Liang, Hua Fu
BACKGROUND: Inequality in maternal and child health seriously hinders the overall improvement of health, which is a concern in both the United Nations Sustainable Development Goals (SDGs) and Healthy China 2030. However, research on the equality of maternal and child health is scarce. This study longitudinally assessed the equality trends in China's maternal and child health outcomes from 2000 to 2013 based on place of residence and gender to improve the fairness of domestic maternal and child health...
April 20, 2017: International Journal for Equity in Health
https://www.readbyqxmd.com/read/28427388/movement-cognition-and-narration-of-the-emotions-treatment-versus-standard-speech-therapy-in-the-treatment-of-children-with-borderline-intellectual-functioning-a-randomized-controlled-trial
#7
V Blasi, G Baglio, F Baglio, M P Canevini, M Zanette
BACKGROUND: Borderline intellectual functioning (BIF) is defined as a "health meta-condition… characterized by various cognitive dysfunctions associated with an intellectual quotient (IQ) between 71 and 85 which determines a deficit in the individual's functioning both in the restriction of activities and in the limitation of social participation". It can be caused by many factors, including a disadvantaged background and prematurity. BIF affects 7-12% of primary school children that show academic difficulties due to poor executive functioning...
April 20, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28427336/protocol-for-the-home-hazards-removal-program-harp-study-a-pragmatic-randomized-clinical-trial-and-implementation-study
#8
Susan Stark, Emily Somerville, Marian Keglovits, Jane Conte, Melody Li, Yi-Ling Hu, Yan Yan
BACKGROUND: Falls remain the leading cause of injury, long-term disability, premature institutionalization, and injury-related mortality in the older adult population. Home modifications, when delivered by occupational therapists, can reduce falls among high-risk community-dwelling older adults by 39%. However, home-modification implementation is not standard practice in the United States. The goal of the Home Hazard Removal Program (HARP) study is to implement an evidence-based home modification intervention for older adults designed to reduce the incidence of falls through an aging services network...
April 20, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28427124/-contemporary-use-of-ticagrelor-in-patients-with-acute-coronary-syndrome-after-discharge
#9
J Liu, H B Yan, L Song, Y H Hua, H J Zhao, C Liu, P Zhou, J N Li, Y Tan, Y M Yang, Y Wu
Objective: To investigate the degree and determinants of using ticagrelor among discharged patients with acute coronary syndrome (ACS). Methods: Patients with ACS in Fuwai hospital who were given ticagrelor after discharge between Jan. 2015 to Jun. 2015 were analyzed.The clinical characteristics and adherence to ticagrelor of these patients were collected by reviewing the electronic medical records and telephone interview.Date were statistically-analyzed. Results: Among all screened 404 patients, 158 (39.1%) patients prematurely stopped ticagrelor within 12 months, while 119(29...
April 18, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28426651/association-of-candidate-gene-polymorphisms-with-clinical-subtypes-of-preterm-birth-in-a-latin-american-population
#10
Lucas G Gimenez, Allison M Momany, Fernando A Poletta, Hugo B Krupitzki, Juan A Gili, Tamara D Busch, Cesar Saleme, Viviana R Cosentino, Mariela S Pawluk, Hebe Campaña, Enrique C Gadow, Jeffrey C Murray, Jorge S Lopez-Camelo
BACKGROUND: Preterm birth (PTB) is the leading cause of neonatal mortality and morbidity. PTB is often classified according to clinical presentation: Idiopathic (PTB-I), preterm premature rupture of membranes (PTB-PPROM), and medically induced (PTB-M). The aim of this study was to evaluate the associations between specific candidate genes and clinical subtypes of PTB. METHODS: 24 SNPs were genotyped in 18 candidate genes in 709 infant triads. Of them, 243 were PTB-I, 256 PTB-PPROM, and 210 PTB-M...
April 20, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28426619/committee-opinion-no-698-hormone-therapy-in-primary-ovarian-insufficiency
#11
(no author information available yet)
Primary ovarian insufficiency describes a spectrum of declining ovarian function and reduced fecundity due to a premature decrease in initial follicle number, an increase in follicle destruction, or poor follicular response to gonadotropins. The sequelae of primary ovarian insufficiency include vasomotor symptoms, urogenital atrophy, osteoporosis and fracture, cardiovascular disease, and increased all-cause mortality. In women with primary ovarian insufficiency, systemic hormone therapy (HT) is an effective approach to treat the symptoms of hypoestrogenism and mitigate long-term health risks if there are no contraindications to treatment...
May 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28426614/committee-opinion-no-698-summary-hormone-therapy-in-primary-ovarian-insufficiency
#12
(no author information available yet)
Primary ovarian insufficiency describes a spectrum of declining ovarian function and reduced fecundity due to a premature decrease in initial follicle number, an increase in follicle destruction, or poor follicular response to gonadotropins. The sequelae of primary ovarian insufficiency include vasomotor symptoms, urogenital atrophy, osteoporosis and fracture, cardiovascular disease, and increased all-cause mortality. In women with primary ovarian insufficiency, systemic hormone therapy (HT) is an effective approach to treat the symptoms of hypoestrogenism and mitigate long-term health risks if there are no contraindications to treatment...
May 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28426126/actinomyces-in-pregnancy-a-review-of-the-literature
#13
Sarah M Estrada, Everett F Magann, Peter G Napolitano
Importance: Actinomyces is commonly found in many areas of the body where it derives a benefit without harming the host. When it does infect the host during pregnancy, is that infection a threat to the obstetric patient and does that infection cause adverse pregnancy outcomes? Objective: The aim of this study was to review what is known about Actinomyces infections and the impact of an Actinomyces infection on pregnancy outcomes. Evidence Acquisition: A PubMed search was undertaken with the search years unlimited to April 1, 2016, and restricted to articles in English...
April 2017: Obstetrical & Gynecological Survey
https://www.readbyqxmd.com/read/28424764/diffusion-tensor-imaging-colour-mapping-threshold-for-identification-of-ventilation-induced-brain-injury-after-intrauterine-inflammation-in-preterm-lambs
#14
Dhafer M Alahmari, Beatrice Skiöld, Samantha K Barton, Ilias Nitsos, Courtney McDonald, Suzanne L Miller, Valerie Zahra, Robert Galinsky, Qizhu Wu, Michael John Farrell, Timothy J Moss, Stuart B Hooper, James T Pearson, Graeme R Polglase
PURPOSE: The aim of this study is to examine whether advanced magnetic resonance imaging (MRI) techniques can detect early brain injury caused by intrauterine inflammation and inappropriate initial respiratory support in preterm lambs. HYPOTHESIS: Neuropathology caused by intrauterine inflammation is exacerbated by mechanical ventilation at birth and is detectable with advanced MRI techniques. METHODS: Pregnant ewes received intra-amniotic lipopolysaccharide (LPS) 7 days prior to delivery at ~125 days of gestation (85% of gestation), whereupon lambs were delivered and randomised to receive an injurious (LPS + INJ, n = 6) or protective (LPS + PROT, n = 6) ventilation strategy...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28424219/down-regulation-of-rbo-pi4kiii%C3%AE-facilitates-a%C3%AE-42-secretion-and-ameliorates-neural-deficits-in-a%C3%AE-42-expressing-drosophila
#15
Xiao Zhang, Wen-An Wang, Li-Xiang Jiang, Hai-Yan Liu, Bao-Zhu Zhang, Nastasia Lim, Qing-Yi Li, Fu-De Huang
Phosphoinositides and their metabolizing enzymes are involved in Aβ42 metabolism and Alzheimer's disease (AD) pathogenesis. In yeast and mammals, Eighty-five requiring 3 (EFR3), whose Drosophila homolog is Rolling Blackout (RBO), forms a plasma membrane-localized protein complex with phosphatidylinositol-4-kinase type IIIα(PI4KIIIα) and a scaffold protein to tightly control the level of plasmalemmal phosphatidylinositol-4-phosphate (PI4P). Here, we report that RBO binds to Drosophila PI4KIIIα, and that in an Aβ42-expressing Drosophila model, separate genetic reduction of PI4KIIIα and RBO, or pharmacological inhibition of PI4KIIIα ameliorated synaptic transmission deficit, climbing ability decline, and premature death, and reduced neuronal accumulation of Aβ42 Moreover, we found that RBO-PI4KIIIa downregulation increased neuronal Aβ42 release, and that PI4P facilitated the assembly or oligomerization of Aβ42 in/on liposomes...
April 19, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28423971/intrauterine-infection-immune-system-and-premature-birth
#16
Fernanda Rodrigues Helmo, Eduardo Arthur Rodovalho Alves, Renata Alves de Andrade Moreira, Viviane Oliveira Severino, Laura Penna Rocha, Maria Luíza Gonçalves Dos Reis Monteiro, Marlene Antônia Dos Reis, Renata Margarida Etchebehere, Juliana Reis Machado, Rosana Rosa Miranda Corrêa
Preterm birth accounts for nearly one million deaths among children under five years of age, and although its etiopathogenesis is not fully elucidated, ascending intrauterine infection and fetal inflammatory response seem to be the main triggers. The intense inflammatory response mediated by IL-1β, TNF-α, PAF, IFN-γ and IL-6, PGE2 and MMP-1 and MMP-9 causes fetal membrane damage and rupture, increased uterine contractions and biochemical and structural changes in the cervix. Furthermore, preterm neonates have deficient innate and adaptive immune responses characterized by reduced levels of IgG, opsonization and phagocytosis, as well as increased activation of Th1 cells in relation to Th2 cells...
April 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28423660/progerin-impairs-vascular-smooth-muscle-cell-growth-via-the-dna-damage-response-pathway
#17
Daisuke Kinoshita, Ayako Nagasawa, Ippei Shimizu, Takashi K Ito, Yohko Yoshida, Masanori Tsuchida, Atsushi Iwama, Toshiya Hayano, Tohru Minamino
Mutations of the lamin A gene cause various premature aging syndromes, including Hutchinson-Gilford progeria syndrome (HGPS) and atypical Werner syndrome. In HGPS (but not atypical Werner syndrome), extensive loss of vascular smooth muscle cells leads to myocardial infarction with premature death. The underlying mechanisms how single gene mutations can cause various phenotypes are largely unknown. We performed an interactome analysis using mutant forms of lamin A involved in progeroid syndromes. We found that the mutant lamin A responsible for HGPS, known as progerin, could not bind to proteins related to the DNA damage response, including DNA-dependent protein kinase (DNA-PK)...
March 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28421965/reducing-premature-mortality-from-non-communicable-diseases
#18
Christi Deaton
Cardiovascular disease and other non-communicable diseases, such as diabetes, cancer and chronic respiratory disease, are a leading cause of premature death and disability worldwide. This article emphasises the importance of prevention in reducing death and disability from preventable non-communicable diseases, especially for individuals with established risk factors for these diseases. It reviews global initiatives to reduce morality rates from these diseases, identifies opportunities for nurses and other healthcare professionals to discuss risk factors with patients, and provides practical suggestions on how to provide advice on healthy lifestyles and enable behaviour change...
April 19, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28421464/a-novel-tp53-mutation-associated-with-twist1-and-sip1-expression-in-an-aggressive-adrenocortical-carcinoma
#19
Daniel Bulzico, Davi Coe Torres, Gerson Moura Ferreira, Bruno Ricardo Barreto Pires, Paulo Antônio Silvestre de Faria, Rocio Hassan, Eliana Abdelhay, Mario Vaisman, Leonardo Vieira Neto
Adrenocortical carcinomas (ACC) are very rare tumors related to TP53 mutations mostly in childhood onset cases. Epithelial-mesenchymal transition (EMT) transcription factors TWIST1 and Smad interacting protein 1 (SIP1) are related to poorer outcomes in other malignancies, but their role in ACC is unknown. We describe a case of an advanced metastatic ACC (Weiss-score of 9) in a patient at age 76. After primary tumor resection, mitotane therapy was started as palliation to low-volume liver metastasis. After a 2-year period of stable disease, the patient died due to brain metastasis...
April 18, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28420777/retinopathy-of-prematurity
#20
Alice L Bashinsky
Retinopathy of prematurity (ROP) is a vasoproliferative retinal disorder unique to premature infants. As premature births increase in many areas of the world, ROP has become a leading cause of childhood blindness. A better understanding of the pathogenesis of ROP, adherence to strict screening guidelines, and evolution of treatment options have reduced the number of sight-threatening complications from ROP.
March 2017: North Carolina Medical Journal
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