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https://www.readbyqxmd.com/read/28738530/prenatal-low-level-phenol-exposures-and-birth-outcomes-in-china
#1
Guodong Ding, Caifeng Wang, Angela Vinturache, Shasha Zhao, Rui Pan, Wenchao Han, Limei Chen, Weiye Wang, Tao Yuan, Yu Gao, Ying Tian
Phenolic compounds are among the endocrine disruptors which are widely used in daily life products. Studies in laboratory animals showed reproductive and developmental effects. In spite of widespread exposure to phenols, only few studies examined their effects on human development. This study was designed to investigate the relationship between antenatal phenol exposure and birth outcomes in a Chinese obstetric population. Four hundred ninety-six mother-infant pairs recruited from the Laizhou Wan prospective birth cohort in northern China between 2010 and 2013 were included in the study...
July 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28738445/population-characteristics-of-macrocheles-glaber-acari-macrochelidae-and-stratiolaelaps-scimitus-acari-laelapidae-reared-on-a-mushroom-fly-coboldia-fuscipes-diptera-scatopsidae
#2
Mei-Fang Wen, Hsin Chi, Ying-Xiao Lian, Yu-Hao Zheng, Qing-Hai Fan, Min-Sheng You
Subterranean predatory mites are important biological control agents of pests in soil. In order to understand the population characteristics of two predatory mites, Macrocheles glaber Müller and Stratiolaelaps scimitus Womersley, we studied their development, survival and fecundity data under laboratory conditions using Coboldia fuscipes Meigen as food source and analyzed with the age-stage, two-sex life table. Macrocheles glaber had a significantly shorter developmental time, oviposition period, longevity and lower fecundity than those of S...
July 24, 2017: Insect Science
https://www.readbyqxmd.com/read/28738418/molecular-pathway-to-protection-from-age-dependent-photoreceptor-degeneration-in-mef2-deficiency
#3
Saumya Nagar, Dorit Trudler, Scott R McKercher, Juan Piña-Crespo, Nobuki Nakanishi, Shu-Ichi Okamoto, Stuart A Lipton
Purpose: Photoreceptor degeneration in the retina is a major cause of blindness in humans. Elucidating mechanisms of degenerative and neuroprotective pathways in photoreceptors should afford identification and development of therapeutic strategies. Methods: We used mouse genetic models and improved methods for retinal explant cultures. Retinas were enucleated from Mef2d+/+ and Mef2d-/- mice, stained for MEF2 proteins and outer nuclear layer thickness, and assayed for apoptotic cells...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28738360/targeting-developmental-pathways-the-achilles-heel-of-cancer
#4
Wolfram C M Dempke, Klaus Fenchel, Peter Uciechowski, Timothy Chevassut
Developmental pathways (e.g., Notch, Hippo, Hedgehog, Wnt, and TGF-β/BMP/FGF) are networks of genes that act co-ordinately to establish the body plan, and disruptions of genes in one pathway can have effects in related pathways and may result in serious dysmorphogenesis or cancer. Interestingly, all developmental pathways are highly conserved cell signalling systems present in almost all multicellular organisms. In addition, they have a crucial role in cell proliferation, apoptosis, differentiation, and finally in organ development...
July 22, 2017: Oncology
https://www.readbyqxmd.com/read/28738319/meeting-report-intercellular-interactions-in-context-towards-a-mechanistic-understanding-of-cells-in-organs
#5
David Bryant, Aaron Johnson
The Company of Biologists held the workshop 'Intercellular interactions in context: towards a mechanistic understanding of cells in organs' at historic Wiston House in West Sussex, UK, 5-8 February 2017. The meeting brought together around 30 scientists from disparate backgrounds - yet with a common interest of how tissue morphogenesis occurs and its dysregulation leads to pathologies - to intensively discuss their latest research, the current state of the field, as well as any challenges for the future. This report summarises the concepts and challenges that arose as key questions for the fields of cell, cancer and developmental biology...
July 1, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28738220/adolescent-peer-networks-and-the-moderating-role-of-depressive-symptoms-on-developmental-trajectories-of-cannabis-use
#6
Michael S Pollard, Joan S Tucker, Harold D Green, Kayla de la Haye, Dorothy L Espelage
This paper investigated how depressive symptoms moderate the role of peer cannabis use on developmental patterns of individual cannabis use from adolescence to young adulthood, controlling for a broad set of individual and family factors. Data from two sources were analyzed separately: two saturated schools in the National Longitudinal Study of Adolescent to Adult Health Waves I-III (N=1550) covering 1994-2001; and three schools in the CARBIN study, covering 2012-2014. Discrete mixture models identified developmental trajectories of cannabis use in each data source, and logit models linked network and depressive symptom information to the trajectories...
July 19, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28737873/two-novel-mutations-in-the-glycine-decarboxylase-gene-in-a-boy-with-classic-nonketotic-hyperglycinemia-case-report
#7
Shu Liu, Zhiqing Wang, Jinqun Liang, Nuan Chen, Haimei OuYang, Weihong Zeng, Liying Chen, Xunjie Xie, Jianhui Jiang
Nonketotic hyperglycinemia is an extremely rare autosomal recessively inherited glycine encephalopathy caused by a deficiency in the mitochondrial glycine cleavage system, which leads to severe clinical symptoms. Nonketotic hyperglycinemia is characterized by complex and diverse phenotypes, such as hypotonia, seizures, cognitive impairment, developmental delays and myoclonic jerks that may lead to apnea and even death. Here we report a 1-year-old boy with myoclonic seizures, hypotonia and coma; he had elevated plasma and cerebrospinal fluid glycine levels, and cerebrospinal fluid/plasma glycine ratio was 0...
August 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28737850/prevalence-of-enamel-markings-on-third-molars
#8
Rassilee Sharma, Sapna Lohiya, Pardis Rajabi, Kelly Nguyen, Albert Ngo, Elizabeth Lee, Afsaneh Shahrokhi Rad, Hongfei Chen, Rodrigo S Lacruz, Shane N White
The purpose of this study was to measure the prevalence of enamel markings in routinely extracted third molars. One hundred donated third molars were examined. All had some marking(s). Caries was almost universal; white snowcapping of cusps and ridges was extremely common; pit and valley defects were very common; spots and bands were very common, most were white; horizontal grooves were common; linear enamel hypoplasia, considered to be a true developmental defect, was rare.
August 2016: Journal—California Dental Association
https://www.readbyqxmd.com/read/28737742/systemic-transport-of-trans-zeatin-and-its-precursor-have-differing-roles-in-arabidopsis-shoots
#9
Asami Osugi, Mikiko Kojima, Yumiko Takebayashi, Nanae Ueda, Takatoshi Kiba, Hitoshi Sakakibara
Organ-to-organ signal transmission is essential for higher organisms to ensure coordinated biological reactions during metabolism and morphogenesis. Similar to organs in animals, plant organs communicate by various signalling molecules. Among them, cytokinins, a class of phytohormones, play a key role as root-to-shoot long-distance signals, regulating various growth and developmental processes in shoots(1,2). Previous studies have proposed that trans-zeatin-riboside, a type of cytokinin precursor, is a major long-distance signalling form in xylem vessels and its action depends on metabolic conversion via the LONELY GUY enzyme in proximity to the site of action(3-5)...
July 24, 2017: Nature Plants
https://www.readbyqxmd.com/read/28737606/visual-acuity-and-contrast-sensitivity-development-in-children-sweep-visually-evoked-potential-and-psychophysics
#10
Fahad M Almoqbel, Elizabeth L Irving, Susan J Leat
PURPOSE: The purpose of this study was to investigate the development of visual acuity (VA) and contrast sensitivity in children as measured with objective (sweep visually evoked potential) and subjective, psychophysical techniques, including signal detection theory (SDT), which attempts to control for differences in criterion or behavior between adults and children. Furthermore, this study examines the possibility of applying SDT methods with children. METHODS: Visual acuity and contrast thresholds were measured in 12 children 6 to 7 years old, 10 children 8 to 9 years old, 10 children 10 to 12 years old, and 16 adults...
July 21, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28737530/ultrasound-characteristics-of-clinically-dislocated-but-reducible-hips-with-ddh
#11
Brendan Striano, Emily K Schaeffer, Travis H Matheney, Vidayadhar V Upasani, Charles T Price, Kishore Mulpuri, Wudbhav N Sankar
BACKGROUND: Although ultrasound (US) is frequently used in diagnosis and management of infantile developmental dysplasia of the hip, precise ultrasonographic parameters of what constitutes a dislocation, subluxation etc remain poorly defined. The purpose of this study was (1) to describe the ultrasonographic characteristics of a large cohort of clinically dislocated but reducible hips and (2) to begin to develop ultrasonographic definitions for what constitutes a hip dislocation. METHODS: A retrospective review of prospectively collected data from an international multicenter study group on developmental dysplasia of the hip was conducted on all patients under 6 months of age with hip(s) that were dislocated at rest but reducible based on initial physical examination (ie, Ortolani positive)...
July 21, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28737450/initial-characterization-of-the-growth-stimulation-and-heat-shock-induced-adaptive-response-in-developing-lake-whitefish-embryos-after-ionizing-radiation-exposure
#12
Christopher Thome, Charles Mitz, Emily N Hulley, Christopher M Somers, Richard G Manzon, Joanna Y Wilson, Douglas R Boreham
Ionizing radiation is known to effect development during early life stages. Lake whitefish (Coregonus clupeaformis) represent a unique model organism for examining such effects. The purpose of this study was to examine how ionizing radiation affects development in lake whitefish embryos and to investigate the presence of an adaptive response induced by heat shock. Acute exposure to (137)Cs gamma rays was administered at five time points corresponding to major developmental stages, with doses ranging from 0...
July 24, 2017: Radiation Research
https://www.readbyqxmd.com/read/28737438/prenatal-exposure-to-angiotensin-ii-increases-blood-pressure-and-decreases-salt-sensitivity-in-rats
#13
Pavel Svitok, Tomas Senko, Zuzana Panakova, Lucia Olexova, Lucia Krskova, Monika Okuliarova, Michal Zeman
Renin angiotensin aldosterone system (RAAS) plays an essential role in the homeostatic control of arterial blood pressure, perfusion of tissues, and control of extracellular fluid. Its components are highly expressed in the developing kidney, general vasculature, brain, and heart. A modified intrauterine environment alters mechanisms controlling blood pressure (BP) and can lead to hypertension in the adult offspring and developmentally programmed RAAS can be involved in this process. There are very little data about the effects of increased angiotensin II (Ang II) concentrations during pregnancy on in utero development of the fetus...
July 24, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28737216/does-developmental-regression-in-autism-spectrum-disorder-have-biological-origins
#14
Jeremy R Parr
No abstract text is available yet for this article.
July 24, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28737203/pain-insensitivity-in-a-child-with-a-de-novo-interstitial-deletion-of-the-long-arm-of-the-chromosome-4-case-report
#15
Marco Cascella, María Rosaria Muzio
Terminal and interstitial deletions of the distal segment of the long arm of chromosome 4 (Cr4q del) are not common genetic disorders. The severity of the phenotype is correlated with the size of the deletion because small deletions have little clinical impact, whereas large deletions are usually associated with multiple congenital anomalies, postnatal growth failure, and moderate to severe intellectual disability. Alteration in pain tolerance has not been included among these features, also in case of large deletions...
June 2017: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/28737141/designing-and-validation-of-a-hindi-language-parent-self-report-developmental-screening-tool
#16
Rahul Jain, Anshita Arora, Rohit Anand, Shahzadi Malhotra, Medha Mittal, Monica Juneja
AIM: To design and validate Hindi-language parent self-report developmental screening questionnaires for 9-month and 18-month-old Indian children. DESIGN: Cross-sectional study. SETTING: Tertiary-care pediatric hospital from April 2014 to March 2016. PARTICIPANTS: In each age group (9-month and 18-month), 45 children were enrolled for designing of questionnaires (30 for obtaining parental observations of current development and 15 for pre-testing)...
July 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28737122/preserved-heart-function-after-left-ventricular-pressure-overload-in-adult-mice-subjected-to-neonatal-cardiac-hypoplasia
#17
K Heinecke, A Heuser, F Blaschke, C Jux, L Thierfelder, J-D Drenckhahn
Intrauterine growth restriction in animal models reduces heart size and cardiomyocyte number at birth. Such incomplete cardiomyocyte endowment is believed to increase susceptibility toward cardiovascular disease in adulthood, a phenomenon referred to as developmental programming. We have previously described a mouse model of impaired myocardial development leading to a 25% reduction of cardiomyocyte number in neonates. This study investigated the response of these hypoplastic hearts to pressure overload in adulthood, applied by abdominal aortic constriction (AAC)...
July 24, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28736897/taking-culture-seriously-can-we-improve-the-developmental-health-and-well-being-of-australian-aboriginal-children-in-out-of-home-care
#18
S Raman, S Ruston, S Irwin, P Tran, P Hotton, S Thorne
BACKGROUND: Children in out-of-home care have well-documented health and developmental needs. Research suggests that Aboriginal children in care have unmet health and intervention needs. In metropolitan Sydney, Kari Aboriginal Resources Inc. (KARI), an Aboriginal organization, provides support to indigenous children in care, including clinical assessment and intervention. We wanted to determine the health and developmental needs of a subset of children in out-of-home care with KARI, who had been in stable care for at least a year...
July 23, 2017: Child: Care, Health and Development
https://www.readbyqxmd.com/read/28736894/comparative-development-in-moenkhausia-pittieri-and-paracheirodon-innesi-ostariophysi-characiformes-with-comments-on-heterochrony-and-miniaturization-in-the-characidae
#19
M M Ferreira Marinho
Developmental heterochronies between the small-sized Moenkhausia pittieri and the miniature Paracheirodon innesi were determined by describing and comparing external morphological development in both species. Despite being classified as miniature, P. innesi was larger and more developed in the flexion and post-flexion larval stages than M. pittieri. Broader patterns within the Characidae suggest that body size reduction in P. innesi is tied to accelerated development and higher growth rate along with early maturation and precocious cessation of growth, which are characteristic of miniature species...
July 23, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28736808/comparative-cranial-ontogeny-of-tapirus-mammalia-perissodactyla-tapiridae
#20
S Rocio Moyano, Norberto P Giannini
Skull morphology in tapirs is particularly interesting due to the presence of a proboscis with important trophic, sensory and behavioral functions. Several studies have dealt with tapir skull osteology but chiefly in a comparative framework between fossil and recent species of tapirs. Only one study examined an aspect of cranial ontogeny, development of the sagittal crest (Holbrook. J Zool Soc Lond 2002; 256; 215). Our goal is to describe in detail the morphological changes that occur during the postnatal ontogeny of the skull in two representative tapir species, Tapirus terrestris and Tapirus indicus, and to explore possible functional consequences of their developmental trajectories...
July 24, 2017: Journal of Anatomy
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