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https://www.readbyqxmd.com/read/29458080/transcriptomic-and-phenotypic-profiling-in-developing-zebrafish-exposed-to-thyroid-hormone-receptor-agonists
#1
Derik E Haggard, Pamela D Noyes, Katrina M Waters, Robert L Tanguay
There continues to be a need to develop in vivo high-throughput screening (HTS) and computational methods to screen chemicals for interaction with the estrogen, androgen, and thyroid pathways and as complements to in vitro HTS assays. This study explored the utility of an embryonic zebrafish HTS approach to identify and classify endocrine bioactivity using phenotypically-anchored transcriptome profiling. Transcriptome analysis was conducted on zebrafish embryos exposed to 25 estrogen-, androgen-, or thyroid-active chemicals at concentrations that elicited adverse malformations or mortality at 120 hours post-fertilization in 80% of animals exposed...
February 16, 2018: Reproductive Toxicology
https://www.readbyqxmd.com/read/29457805/urinary-metabolomic-study-of-the-antagonistic-effect-of-p-ginseng-in-rats-with-estrogen-decline-using-ultra-performance-liquid-chromatography-coupled-with-quadrupole-time-of-flight-mass-spectrometry
#2
He Lin, Zhongying Liu, Zifeng Pi, Lihui Men, Weijia Chen, Zhiqiang Liu
Estrogens are biologically active steroid hormones mainly released from the ovary by ovarian secretion of estrogen into the circulating blood to regulate or function at the distal target. Estrogens play an important role in the central nervous system, cardiovascular system and immune system, especially for post-menopausal women. Panax ginseng Mayer has been reported to relieve women's menopausal symptoms and affect estrogen activities. However, the mechanism of its estrogen regulation has not yet been clearly investigated...
February 19, 2018: Food & Function
https://www.readbyqxmd.com/read/29457149/working-memory-training-in-adolescents-decreases-laboratory-risk-taking-in-the-presence-of-peers
#3
Gail M Rosenbaum, Morgan A Botdorf, Jamie L Patrianakos, Laurence Steinberg, Jason M Chein
Adolescence is a period of heightened risk-taking relative to both adulthood and childhood, due in part to peers' increased influence on adolescent decision making. Because adolescents' choices have harmful consequences, there is great interest in specific interventions that might attenuate risk taking. We hypothesized that it might be possible to reduce adolescent risk taking through an intervention targeting the ability/tendency to engage cognitive control processes. While some studies of Working Memory Training (WMT) have indicated subsequent enhancement of adults' cognitive control abilities, potential impacts on adolescent cognitive control have not been explored...
December 2017: Journal of Cognitive Enhancement
https://www.readbyqxmd.com/read/29456552/identification-of-single-nucleotide-non-coding-driver-mutations-in-cancer
#4
REVIEW
Kok A Gan, Sebastian Carrasco Pro, Jared A Sewell, Juan I Fuxman Bass
Recent whole-genome sequencing studies have identified millions of somatic variants present in tumor samples. Most of these variants reside in non-coding regions of the genome potentially affecting transcriptional and post-transcriptional gene regulation. Although a few hallmark examples of driver mutations in non-coding regions have been reported, the functional role of the vast majority of somatic non-coding variants remains to be determined. This is because the few driver variants in each sample must be distinguished from the thousands of passenger variants and because the logic of regulatory element function has not yet been fully elucidated...
2018: Frontiers in Genetics
https://www.readbyqxmd.com/read/29456084/rescue-of-fragile-x-syndrome-neurons-by-dna-methylation-editing-of-the-fmr1-gene
#5
X Shawn Liu, Hao Wu, Marine Krzisch, Xuebing Wu, John Graef, Julien Muffat, Denes Hnisz, Charles H Li, Bingbing Yuan, Chuanyun Xu, Yun Li, Dan Vershkov, Angela Cacace, Richard A Young, Rudolf Jaenisch
Fragile X syndrome (FXS), the most common genetic form of intellectual disability in males, is caused by silencing of the FMR1 gene associated with hypermethylation of the CGG expansion mutation in the 5' UTR of FMR1 in FXS patients. Here, we applied recently developed DNA methylation editing tools to reverse this hypermethylation event. Targeted demethylation of the CGG expansion by dCas9-Tet1/single guide RNA (sgRNA) switched the heterochromatin status of the upstream FMR1 promoter to an active chromatin state, restoring a persistent expression of FMR1 in FXS iPSCs...
February 8, 2018: Cell
https://www.readbyqxmd.com/read/29455694/a-study-of-hospital-disaster-preparedness-in-south-yemen
#6
Waheeb Nasr Naser, Pier Luigi Ingrassia, Salem Aladhrae, Wegdan Ali Abdulraheem
Introduction Despite emphasis by disaster experts on the importance of disaster preparedness, disaster management in Yemen has attracted only a little attention. Most of the efforts have focused on post-disaster relief activities rather than the pre-disaster preparedness and risk reduction. Hospitals have a crucial role in emergency response and should be prepared. Thus, the aim of this study was intended to assess the hospital preparedness of Aden Capital, South Yemen against disasters. METHOD: A cross-sectional study was conducted in June 2016...
February 19, 2018: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/29455576/central-infusion-of-igf-1-increases-hippocampal-neurogenesis-and-improves-neurobehavioral-function-following-traumatic-brain-injury
#7
Shaun W Carlson, Kathryn E Saatman
Traumatic brain injury (TBI) produces neuronal dysfunction and cellular loss that can culminate in lasting impairments in cognitive and motor abilities. Therapeutic agents that promote repair and replenish neurons after TBI hold promise in improving recovery of function. Insulin-like growth factor-1 (IGF-1) is a neurotrophic factor capable of mediating neuroprotective and neuroplasticity mechanisms. Targeted overexpression of IGF-1 enhances the generation of hippocampal newborn neurons in brain-injured mice; however, the translational neurogenic potential of exogenously administered IGF-1 after TBI remains unknown...
February 17, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29455384/novel-interventions-to-reduce-stress-and-overeating-in-overweight-pregnant-women-a-feasibility-study
#8
B A Laraia, N E Adler, K Coleman-Phox, C Vieten, L Mellin, J L Kristeller, M Thomas, N E Stotland, R H Lustig, M F Dallman, F M Hecht, N R Bush, C L de Groat, E Epel
Background High stress and depression during pregnancy are risk factors for worsened health trajectories for both mother and offspring. This is also true for pre-pregnancy obesity and excessive gestational weight gain. Reducing stress and depression may be one path to prevent excessive caloric intake and gestational weight gain. Study Purpose We tested the feasibility of two novel interventions aimed at reducing stress and overeating during pregnancy. Reflecting different theoretical underpinnings, the interventions target different mechanisms...
February 17, 2018: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/29454838/analysis-of-cocaine-adulterants-in-human-brain-in-cases-of-drug-related-death
#9
Marianne Knuth, Oliver Temme, Thomas Daldrup, Evelyn Pawlik
For different reasons, street cocaine is often diluted with pharmacologically active substances, the so-called adulterants such as levamisole or hydroxyzine. A controversial debate exists currently on the uptake of adulterants from cocaine preparations and drug-related death. Previous research convincingly argues that serious adverse side effects that affect the central nervous and cardiovascular systems can be a consequence of adulterated cocaine. AIMS: Having identified the presence of adulterants in lung tissue and blood, the concentrations of these substances in brain, an important target location, was of interest...
February 10, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29454612/ecdysteroidogenesis-and-development-in-heliothis-virescens-lepidoptera-noctuidae-focus-on-ptth-stimulated-pathways
#10
Carmen Scieuzo, Marisa Nardiello, Rosanna Salvia, Marco Pezzi, Milvia Chicca, Marilena Leis, Sabino A Bufo, S Bradleigh Vinson, Asha Rao, Heiko Vogel, Patrizia Falabella
Post-embryonic development and molting in insects are regulated by endocrine changes, including prothoracicotropic hormone (PTTH)-stimulated ecdysone secretion by the prothoracic glands (PGs). In Lepidoptera, two pathways are potentially involved in PTTH-stimulated ecdysteroidogenesis, mitogen-activated protein kinase (MAPK) and phosphoinositide 3-kinase/protein kinase B/target of rapamycin (PI3K/Akt/TOR). We investigated the potential roles of both these pathways in Heliothis virescens ecdysteroidogenesis...
February 15, 2018: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29454374/effects-of-umbilical-cord-blood-cells-and-subtypes-to-reduce-neuroinflammation-following-perinatal-hypoxic-ischemic-brain-injury
#11
Courtney A McDonald, Tayla R Penny, Madison C B Paton, Amy E Sutherland, Lakshmi Nekkanti, Tamara Yawno, Margie Castillo-Melendez, Michael C Fahey, Nicole M Jones, Graham Jenkin, Suzanne L Miller
BACKGROUND: It is well understood that hypoxic-ischemic (HI) brain injury during the highly vulnerable perinatal period can lead to cerebral palsy, the most prevalent cause of chronic disability in children. Recently, human clinical trials have reported safety and some efficacy following treatment of cerebral palsy using umbilical cord blood (UCB) cells. UCB is made up of many different cell types, including endothelial progenitor cells (EPCs), T regulatory cells (Tregs), and monocyte-derived suppressor cells (MDSCs)...
February 17, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29454023/interaction-between-hypothermia-and-delayed-mesenchymal-stem-cell-therapy-in-neonatal-hypoxic-ischemic-brain-injury
#12
Josephine Herz, Christian Köster, Barbara S Reinboth, Mark Dzietko, Wiebke Hansen, Hemmen Sabir, Cindy van Velthoven, Ivo Bendix, Ursula Felderhoff-Müser
Acute hypothermia treatment (HT) is the only clinically established intervention following neonatal hypoxic-ischemic brain injury. However, almost half of all cooled infants still die or suffer from long-lasting neurological impairments. Regenerative therapies, such as mesenchymal stem cells (MSC) appear promising as adjuvant therapy. In the present study, we hypothesized that HT combined with delayed MSC therapy results in augmented protection, improving long-term neurological outcome. Postnatal day 9 (P9) C57BL/6 mice were exposed to hypoxia-ischemia followed by 4 hours HT...
February 14, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29453741/fuel-for-the-work-required-a-theoretical-framework-for-carbohydrate-periodization-and-the-glycogen-threshold-hypothesis
#13
Samuel G Impey, Mark A Hearris, Kelly M Hammond, Jonathan D Bartlett, Julien Louis, Graeme L Close, James P Morton
Deliberately training with reduced carbohydrate (CHO) availability to enhance endurance-training-induced metabolic adaptations of skeletal muscle (i.e. the 'train low, compete high' paradigm) is a hot topic within sport nutrition. Train-low studies involve periodically training (e.g., 30-50% of training sessions) with reduced CHO availability, where train-low models include twice per day training, fasted training, post-exercise CHO restriction and 'sleep low, train low'. When compared with high CHO availability, data suggest that augmented cell signalling (73% of 11 studies), gene expression (75% of 12 studies) and training-induced increases in oxidative enzyme activity/protein content (78% of 9 studies) associated with 'train low' are especially apparent when training sessions are commenced within a specific range of muscle glycogen concentrations...
February 16, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29453003/effects-of-aut00063-a-kv3-1-channel-modulator-on-noise-induced-hyperactivity-in-the-dorsal-cochlear-nucleus
#14
Lyall Glait, Weiwen Fan, Gina Stillitano, Sharon Sandridge, Nadia Pilati, Charles Large, Giuseppe Alvaro, James A Kaltenbach
The purpose of this study was to test whether a Kv3 potassium channel modulator, AUT00063, has therapeutic potential for reversing noise-induced increases in spontaneous neural activity, a state that is widely believed to underlie noise-induced tinnitus. Recordings were conducted in noise exposed and control hamsters from dorsal cochlear nucleus (DCN) fusiform cells before and following intraperitoneal administration of AUT00063 (30 mg/kg). Fusiform cell spontaneous activity was increased in sound-exposed animals, approximating levels that were nearly 50% above those of controls...
February 7, 2018: Hearing Research
https://www.readbyqxmd.com/read/29452228/a-bach2-gene-variant-is-associated-with-postoperative-recurrence-of-crohn-s-disease
#15
Michael R Laffin, Richard N Fedorak, Eytan Wine, Bryan Dicken, Karen L Madsen
BACKGROUND: Crohn's disease often requires intestinal resection, which is not considered curative. Repeat surgical intervention is necessary in over half of the patients following their initial operation. Although many genetic loci are implicated in Crohn's disease, few have been associated with post-resection recurrence. STUDY DESIGN: A cohort of Crohn's disease subjects who underwent intestinal resection was analyzed to determine genetic and clinical factors associated with post-resection recurrence...
February 13, 2018: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/29452136/neuroprotective-effects-of-valproic-acid-on-brain-ischemia-are-related-to-its-hdac-and-gsk3-inhibitions
#16
Monalisa Ribeiro Silva, Alyne Oliveira Correia, Gabriel Cabral Alencar Dos Santos, Lucas Leimig Telles Parente, Keicy Parente de Siqueira, Danielly Gonçalves Sombra Lima, Jonathan Almeida Moura, Ana Elisa da Silva Ribeiro, Roberta Oliveira Costa, Daniel Luna Lucetti, Elaine Cristina Pereira Lucetti, Kelly Rose Tavares Neves, Glauce Socorro de Barros Viana
Valproic acid (VA) is an antiepileptic that is also used for the treatment of bipolar disorders. The objective was to evaluate the neuroprotective effects of VA on a brain ischemia model. The groups of male Wistar rats were: SO (sham-operated), ischemic and ischemic treated with VA (25, 50 and 100 mg/kg, p.o.). After anesthesia with ketamine and xilazine, the animals were subjected to clamping of carotid arteries (30 min) and reperfusion. Except for the carotid clamping, the SO group was submitted to the same procedure...
February 13, 2018: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29451892/assessing-site-formation-and-assemblage-integrity-through-stone-tool-refitting-at-gruta-da-oliveira-almonda-karst-system-torres-novas-portugal-a-middle-paleolithic-case-study
#17
Marianne Deschamps, João Zilhão
We use stone tool refitting to assess palimpsest formation and stratigraphic integrity in the basal units of the Gruta da Oliveira archeo-stratigraphic sequence, layers 15-27, which TL and U-series dating places in late Marine Isotope Stage (MIS) 5 or early MIS 4. As in most karst contexts, the formation of this succession involved multiple and complex phenomena, including subsidence, bioturbation, carnivore activity and runoff as agents of potential post-depositional disturbance. During phases of stabilization, such as represented by layers 15, 21 and 22, the excavated area was inhabited and refits corroborate that post-depositional displacement is negligible...
2018: PloS One
https://www.readbyqxmd.com/read/29451368/public-health-response-to-an-imported-case-of-canine-melioidosis
#18
C W Ryan, K Bishop, D D Blaney, S J Britton, F Cantone, C Egan, M G Elrod, C W Frye, A M Maxted, G Perkins
Melioidosis in humans presents variably as fulminant sepsis, pneumonia, skin infection and solid organ abscesses. It is caused by Burkholderia pseudomallei, which in the United States is classified as a select agent, with "potential to pose a severe threat to both human and animal health, to plant health or to animal and plant products" (Federal Select Agent Program, http://www.selectagents.gov/, accessed 22 September 2016). Burkholderia pseudomallei is found in soil and surface water in the tropics, especially South-East Asia and northern Australia, where melioidosis is endemic...
February 16, 2018: Zoonoses and Public Health
https://www.readbyqxmd.com/read/29451300/decreased-anterior-cingulate-activation-in-a-motor-task-in-youths-with-bipolar-disorder
#19
Jace B King, Jeffrey S Anderson, Deborah A Yurgelun-Todd, Punitha Subramaniam, Marie R Ehrler, Melissa P Lopez-Larson
BACKGROUND: Bipolar disorder (BP) is characterized by abnormal shifts in mood between episodes of mania and severe depression, both of which have been linked with psychomotor disturbances. This study compares brain activation patterns in motor networks between euthymic youths with BP and healthy controls (HC) during the completion of a simple motor task. METHODS: Thirty-five youths with BP and 35 HC (aged 10-19) completed a self-paced sequential bilateral finger-tapping task, consisting of a 4-minute scan block with alternating 20-second periods of either the tapping task (six blocks) or rest (six blocks), while undergoing functional magnetic resonance imaging...
February 16, 2018: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/29450112/effect-of-bacillus-pumilus-ccibp-c5-on-musa-pseudocercospora-fijiensis-interaction
#20
Mileidy Cruz-Martín, Mayra Acosta-Suárez, Eilyn Mena, Berkis Roque, Tatiana Pichardo, Yelenys Alvarado-Capó
The effect of antifungal activity of culture filtrate (CF) of Bacillus pumilus strain CCIBP-C5, an isolate from a phyllosphere of banana ( Musa ) leaves, was determined on Pseudocercospora fijiensis challenged banana plants. The CF was shown to decrease the fungal biomass and induce changes in banana plant. In this sense, at 70 days post inoculation (dpi), a lower infection index as well as a decrease in fungal biomass after 6 dpi was obtained in treated plants with respect to control ones. At the same time, changes in the activities of several enzymes related to plant defense responses, such as phenylalanine ammonia lyase, chitinases, β-1,3-glucanases and peroxidases were observed...
February 2018: 3 Biotech
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