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https://www.readbyqxmd.com/read/28822740/is-dna-damage-indispensable-for-stress-induced-senescence
#1
REVIEW
Anna Bielak-Zmijewska, Grazyna Mosieniak, Ewa Sikora
Cellular senescence is a fundamental trait of many eukaryotic organisms. Senescent cells participate both in the developmental program and in normal ageing and age-related diseases. Senescence of proliferation-prone cells is a state of permanent cell cycle arrest accompanied by metabolic activity manifested by high secretion levels of numerous factors, including pro-inflammatory ones. It seems that cell senescence is a stress response. There are many intrinsic and extrinsic stress inducers which can elicit cell senescence...
August 16, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28821904/developmentally-regulated-signaling-pathways-in-glioma-invasion
#2
REVIEW
Shwetal Mehta, Costanza Lo Cascio
Malignant gliomas are the most common, infiltrative, and lethal primary brain tumors affecting the adult population. The grim prognosis for this disease is due to a combination of the presence of highly invasive tumor cells that escape surgical resection and the presence of a population of therapy-resistant cancer stem cells found within these tumors. Several studies suggest that glioma cells have cleverly hijacked the normal developmental program of neural progenitor cells, including their transcriptional programs, to enhance gliomagenesis...
August 18, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28821769/patterns-of-transcriptional-parallelism-and-variation-in-the-developing-olfactory-system-of-drosophila-species
#3
Jia Wern Pan, Qingyun Li, Scott Barish, Sumie Okuwa, Songhui Zhao, Charles Soeder, Matthew Kanke, Corbin D Jones, Pelin Cayirlioglu Volkan
Organisms have evolved strikingly parallel phenotypes in response to similar selection pressures suggesting that there may be shared constraints limiting the possible evolutionary trajectories. For example, the behavioral adaptation of specialist Drosophila species to specific host plants can exhibit parallel changes in their adult olfactory neuroanatomy. We investigated the genetic basis of these parallel changes by comparing gene expression during the development of the olfactory system of two specialist Drosophila species to that of four other generalist species...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821469/a-cluster-randomized-trial-of-a-middle-school-gender-violence-prevention-program-design-rationale-and-sample-characteristics
#4
Kaleab Z Abebe, Kelley A Jones, Samantha Ciaravino, Lisa Ripper, Taylor Paglisotti, Sarah Elizabeth Morrow, Melanie Grafals, Courtney Van Dusen, Elizabeth Miller
INTRODUCTION: High rates of adolescent relationship abuse (ARA) and sexual violence (SV) reported among adolescents point to the need for prevention among middle school-age youth. This is a cluster randomized controlled trial to test an athletic coach-delivered ARA/SV prevention program in 41 middle schools (38 clusters). Trained coaches talk to their male athletes about 1) what constitutes harmful vs. respectful relationship behaviors, 2) dispelling myths that glorify male sexual aggression and promoting more gender-equitable attitudes, and 3) positive bystander intervention when aggressive male behaviors toward females are witnessed...
August 15, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28820882/correlation-between-mosquito-larval-density-and-their-habitat-physicochemical-characteristics-in-mazandaran-province-northern-iran
#5
Seyed Hassan Nikookar, Mahmoud Fazeli-Dinan, Shahyad Azari-Hamidian, Seyed Nouraddin Mousavinasab, Mohsen Aarabi, Seyyed Payman Ziapour, Yahya Esfandyari, Ahmadali Enayati
Characteristics of mosquito larval habitats are important in determining whether they can survive and successfully complete their developmental stages. Therefore, data on the ecological factors affecting mosquito density and abundance especially the physicochemical properties of water of their breeding sites, can possibly be helpful in implementing larval management programs. Mosquito larvae were collected using a standard 350 ml dipper from fixed habitats including: artificial pool, river edge, creek and etc, in 30 villages of 16 counties from May-December 2014...
August 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28818714/the-role-of-physical-activity-in-improving-physical-fitness-in-children-with-intellectual-and-developmental-disabilities
#6
Kyla Collins, Kerri Staples
BACKGROUND: One in three children in North America are considered overweight or obese. Children with intellectual and developmental disabilities (IDD) are at an increased risk for obesity than their typically developing peers. Decreased physical activity (PA) and low physical fitness may be contributing factors to this rise in obesity. AIM: Because children with IDD are at an increased risk of diseases related to inactivity, it is important to improve health-related physical fitness to complete activities of daily living and improve health...
August 14, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28816917/factors-associated-with-developmental-behavioral-pediatricians-prescribing-psychotropic-medication-to-children-with-autism-spectrum-disorder-a-study-of-three-dbpnet-sites
#7
Carissa Jackel, Justine Shults, Susan Wiley, Jareen Meinzen-Derr, Marilyn Augustyn, Nathan Blum
OBJECTIVE: Psychotropic medications are frequently prescribed to children with autism spectrum disorder (ASD), but little is known about the prescribing practices of developmental-behavioral pediatricians (DBPs). Our objective was to determine whether clinical site, age, insurance, or comorbidities influenced DBPs prescribing psychotropic medication for children with ASD. METHODS: A retrospective analysis was performed using electronic health record data of all patients with ASD seen at 3 academic developmental-behavioral pediatrics (DBP) clinical programs from January 2010 to December 2011...
August 10, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28816915/physician-awareness-of-developmental-screening-and-referral-in-the-state-of-kuwait
#8
Hollie Hix-Small, Khaled Alkherainej
OBJECTIVE: In the State of Kuwait, family physicians and pediatricians are responsible for identifying and referring children at risk of disability. The aims of this study were to better understand physician (1) use of developmental screening instruments, (2) referral practices for children at risk of developmental disability, (3) interpretation of screening results, and (4) anticipatory guidance topics prioritized over child screening. METHODS: A nonprobability volunteer, self-selection sample of family physicians, general practitioners, and pediatricians (n = 398) completed a 60-item paper questionnaire...
August 9, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28816587/dna-methylation-independent-growth-restriction-and-altered-developmental-programming-in-a-mouse-model-of-preconception-male-alcohol-exposure
#9
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/28816000/investigating-facial-phenotype-in-autism-spectrum-conditions-the-importance-of-a-hypothesis-driven-approach
#10
Maryam Boutrus, Murray T Maybery, Gail A Alvares, Diana Weiting Tan, Kandice J Varcin, Andrew J O Whitehouse
Atypical facial characteristics have been observed in many disorders associated with developmental disability. While autism spectrum conditions (ASC) have not previously been thought to be associated with a distinct facial phenotype, an emerging research literature is casting doubt on this assumption. The identification of differences in the facial phenotype of individuals with ASC may contribute to efforts to promote early identification of the condition and help elucidate etiological pathways. With the aim of identifying facial phenotypes associated with ASC, this commentary evaluated facial features purported to distinguish ASC from typical development...
August 17, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28815806/evaluation-in-zebrafish-model-of-the-toxicity-of-rhodamine-b-conjugated-crotamine-a-peptide-potentially-useful-for-diagnostics-and-therapeutics
#11
Judy Yuet-Wa Chan, Hefeng Zhou, Yiu Wa Kwan, Shun Wan Chan, Gandhi Radis-Baptista, Simon Ming-Yuen Lee
Crotamine is defensin-like cationic peptide from rattlesnake venom that possesses anticancer, antimicrobial, and antifungal properties. Despite these promising biological activities, toxicity is a major concern associated with the development of venom-derived peptides as therapeutic agents. In the present study, we used zebrafish as a system model to evaluate the toxicity of rhodamine B-conjugated (RhoB) crotamine derivative. The lethal toxic concentration of RhoB-crotamine was as low as 4 μM, which effectively kill zebrafish larvae in less than 10 min...
August 16, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28814532/developmental-process-and-early-phases-of-implementation-for-the-us-interagency-committee-on-human-nutrition-research-national-nutrition-research-roadmap-2016-2021
#12
Sheila E Fleischhacker, Rachel M Ballard, Pamela E Starke-Reed, Deborah A Galuska, Marian L Neuhouser
The Interagency Committee on Human Nutrition Research (ICHNR) is charged with improving the planning, coordination, and communication among federal agencies engaged in nutrition research and with facilitating the development and updating of plans for federal research programs to meet current and future domestic and international needs for nutrition. The ICHNR is co-chaired by the USDA Under Secretary for Research, Education, and Economics and Chief Scientist and the US Department of Health and Human Services Assistant Secretary for Health and is made up of >10 departments and agencies...
August 16, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28813658/ccctc-binding-factor-translates-interleukin-2-and-%C3%AE-ketoglutarate-sensitive-metabolic-changes-in-t%C3%A2-cells-into-context-dependent-gene-programs
#13
Danielle A Chisolm, Daniel Savic, Amanda J Moore, Andre Ballesteros-Tato, Beatriz León, David K Crossman, Cornelis Murre, Richard M Myers, Amy S Weinmann
Despite considerable research connecting cellular metabolism with differentiation decisions, the underlying mechanisms that translate metabolite-sensitive activities into unique gene programs are still unclear. We found that aspects of the interleukin-2 (IL-2)-sensitive effector gene program in CD4(+) and CD8(+) T cells in type 1 conditions (Th1) were regulated by glutamine and alpha-ketoglutarate (αKG)-induced events, in part through changes in DNA and histone methylation states. We further identified a mechanism by which IL-2- and αKG-sensitive metabolic changes regulated the association of CCCTC-binding factor (CTCF) with select genomic sites...
August 15, 2017: Immunity
https://www.readbyqxmd.com/read/28811309/cellular-and-molecular-mechanisms-coordinating-pancreas-development
#14
REVIEW
Aimée Bastidas-Ponce, Katharina Scheibner, Heiko Lickert, Mostafa Bakhti
The pancreas is an endoderm-derived glandular organ that participates in the regulation of systemic glucose metabolism and food digestion through the function of its endocrine and exocrine compartments, respectively. While intensive research has explored the signaling pathways and transcriptional programs that govern pancreas development, much remains to be discovered regarding the cellular processes that orchestrate pancreas morphogenesis. Here, we discuss the developmental mechanisms and principles that are known to underlie pancreas development, from induction and lineage formation to morphogenesis and organogenesis...
August 15, 2017: Development
https://www.readbyqxmd.com/read/28809400/prenatal-one-carbon-metabolism-dysregulation-programs-schizophrenia-like-deficits
#15
A Alachkar, L Wang, R Yoshimura, A R Hamzeh, Z Wang, N Sanathara, S M Lee, X Xu, G W Abbott, O Civelli
The methionine-folate cycle-dependent one-carbon metabolism is implicated in the pathophysiology of schizophrenia. Since schizophrenia is a developmental disorder, we examined the effects that perturbation of the one-carbon metabolism during gestation has on mice progeny. Pregnant mice were administered methionine equivalent to double their daily intake during the last week of gestation. Their progeny (MET mice) exhibited schizophrenia-like social deficits, cognitive impairments and elevated stereotypy, decreased neurogenesis and synaptic plasticity, and abnormally reduced local excitatory synaptic connections in CA1 neurons...
August 15, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28808898/wilhelm-his-and-mechanistic-approaches-to-development-at-the-time-of-entwicklungsmechanik
#16
Jean-Claude Dupont
At the end of the nineteenth century, approaches from experimental physiology made inroads into embryological research. A new generation of embryologists felt urged to study the mechanisms of organ formation. This new program, most prominently defended by Wilhelm Roux (1850-1924), was called Entwicklungsmechanik. Named variously as "causal embryology", "physiological embryology" or "developmental mechanics", it catalyzed the movement of embryology from a descriptive science to one exploring causal mechanisms...
August 14, 2017: History and Philosophy of the Life Sciences
https://www.readbyqxmd.com/read/28808767/identification-and-expression-analysis-of-micrornas-during-ovule-development-in-rice-oryza-sativa-by-deep-sequencing
#17
Ya Wu, Liyu Yang, Meiling Yu, Jianbo Wang
MicroRNA (miRNA) expression profiles during rice ovule development revealed the possible miRNA-mediated regulation between ovule sporophytic tissue and female gametophyte and the involvement of miRNAs in programmed cell death. MiRNAs are 20-24-nucleotide small RNAs that play key roles in the regulation of many growth and developmental processes in plants. Rice ovule development comprises a series of biological events, which are regulated by complex molecular mechanisms. To gain insight into miRNA-mediated regulation of rice ovule development, Illumina sequencing was used to examine the expression of miRNAs from the megaspore mother cell meiosis stage to the fertilized ovule stage...
August 14, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28808079/the-impact-of-iugr-on-pancreatic-islet-development-and-%C3%AE-cell-function
#18
Brit H Boehmer, Sean W Limesand, Paul J Rozance
Placental insufficiency is a primary cause of intrauterine growth restriction (IUGR). IUGR increases the risk of developing type 2 diabetes mellitus (T2DM) throughout life, which indicates that insults from placental insufficiency impair β-cell development during the perinatal period because β-cells have a central role in the regulation of glucose tolerance. The severely IUGR fetal pancreas is characterized by smaller islets, less β-cells, and lower insulin secretion. Because of the important associations among impaired islet growth, β-cell dysfunction, impaired fetal growth, and the propensity for T2DM, significant progress has been made in understanding the pathophysiology of IUGR and programing events in the fetal endocrine pancreas...
August 14, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28807899/pitx1-directly-modulates-the-core-limb-development-program-to-implement-hindlimb-identity
#19
Stephen Nemec, Maëva Luxey, Deepak Jain, Aurélie Huang Sung, Tomi Pastinen, Jacques Drouin
Forelimbs (FL) and hindlimbs (HL) develop complex musculoskeletal structures that rely on the deployment of a conserved developmental program. Pitx1, a transcription factor gene with expression restricted to HL and absent from FL, plays an important role in generating HL features. The genomic mechanisms by which Pitx1 effects HL identity remain poorly understood, however. Here, we use expression profiling and analysis of direct Pitx1 targets to characterize the HL- and FL-restricted genetic programs and situate the Pitx1-dependent gene network within the context of limb-specific gene regulation...
August 14, 2017: Development
https://www.readbyqxmd.com/read/28807878/sex-dependent-changes-in-lipid-metabolism-ppar-pathways-and-micrornas-that-target-ppars-in-the-fetal-liver-of-rats-with-gestational-diabetes
#20
Daiana Fornes, Verónica White, Romina Higa, Florencia Heinecke, Evangelina Capobianco, Alicia Jawerbaum
Gestational diabetes mellitus (GDM) is a prevalent disease that impairs fetal metabolism and development. We have previously characterized a rat model of GDM induced by developmental programming. Here, we analyzed lipid content, the levels of the three PPAR isotypes and the expression of microRNAs that regulate PPARs expression in the liver of male and female fetuses of control and GDM rats on day 21 of pregnancy. We found increased levels of triglycerides and cholesterol in the livers of male fetuses of GDM rats compared to controls, and, oppositely, reduced levels of triglycerides, cholesterol, phospholipids and free fatty acids in the livers of female fetuses of GDM rats compared to controls...
August 12, 2017: Molecular and Cellular Endocrinology
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