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https://www.readbyqxmd.com/read/28539002/from-in-vivo-to-in-vitro-the-medical-device-testing-paradigm-shift
#1
Dayna Kerecman Myers, Alan M Goldberg, Albrecht Poth, Michael F Wolf, Joseph Carraway, James McKim, Kelly P Coleman, Richard Hutchinson, Ronald Brown, Harald F Krug, Anthony Bahinski, Thomas Hartung
Amid growing efforts to advance the replacement, reduction, and refinement of the use of animals in research, there is a growing recognition that in vitro testing of medical devices can be more effective, both in terms of cost and time, and also more reliable than in vivo testing. Although the technological landscape has evolved rapidly in support of these concepts, regulatory acceptance of alternative testing methods has not kept pace. Despite the acceptance by regulators of some in vitro tests (cytotoxicity, gene toxicity, and some hemocompatibility assays), many toxicity tests still rely on animals (irritation, sensitization, acute toxicity, reproductive/developmental toxicity), even where other industrial sectors have already abandoned them...
May 25, 2017: ALTEX
https://www.readbyqxmd.com/read/28538871/what-do-cochrane-systematic-reviews-say-about-interventions-for-autism-spectrum-disorders
#2
Larissa Lyra, Luiz Eduardo Rizzo, Camila Sá Sunahara, Daniela Vianna Pachito, Carolina de Oliveira Cruz Latorraca, Ana Luiza Cabrera Martimbianco, Rachel Riera
CONTEXT AND OBJECTIVE: Autism spectrum disorders (ASDs) include autistic disorder, Asperger's disorder and pervasive developmental disorder. The manifestations of ASDs can have an important impact on learning and social functioning that may persist during adulthood. The aim here was to summarize the evidence from Cochrane systematic reviews on interventions for ASDs. DESIGN AND SETTING: Review of systematic reviews, conducted within the Discipline of Evidence-Based Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo...
March 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28538419/magnetic-resonance-imaging-evaluation-of-the-labrum-to-predict-acetabular-development-in-developmental-dysplasia-of-the-hip-a-strobe-compliant-study
#3
Yasuhiro Shirai, Kenjiro Wakabayashi, Ikuo Wada, Yoshiaki Tsuboi, Myongsu Ha, Takanobu Otsuka
Recently, more attention has been paid to the role of the acetabular labrum. Therefore, we designed a retrospective cohort study of patients with residual hip dysplasia (RHD) who underwent magnetic resonance imaging (MRI). The objective of this study was to investigate an association between the MRI appearance of the labrum before school age and the natural history of RHD.We retrospectively investigated 45 hips of 40 patients who underwent MRI at about 3 and 4 years of age for RHD and were conservatively followed up with until 6 years of age or older...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28538323/the-effect-of-a-psychomotor-education-program-on-the-static-balance-of-children-with-intellectual-disability
#4
Eleni G Fotiadou, Konstantina H Neofotistou, Paraskevi F Giagazoglou, Vasilios K Tsimaras
Fotiadou, EG, Neofotistou, KH, Giagazoglou, PF, and Tsimaras, VK. The effect of a psychomotor education program on the static balance of children with intellectual disability. J Strength Cond Res 31(6): 1702-1708, 2017-Children with intellectual disability (ID) demonstrate lower balance ability which results in substantial delays in motor growth and limits their function level. Psychomotor education comprises a holistic movement approach, with the aim to improve all aspects of each child personality. The aim of this study was to assess the effect of a psychomotor education program on static balance of school-aged children with ID...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538178/wolf-hirschhorn-syndrome-candidate-1-is-necessary-for-correct-hematopoietic-and-b-cell-development
#5
Elena Campos-Sanchez, Nerea Deleyto-Seldas, Veronica Dominguez, Enrique Carrillo-de-Santa-Pau, Kiyoe Ura, Pedro P Rocha, JungHyun Kim, Arafat Aljoufi, Anna Esteve-Codina, Marc Dabad, Marta Gut, Holger Heyn, Yasufumi Kaneda, Keisuke Nimura, Jane A Skok, Maria Luisa Martinez-Frias, Cesar Cobaleda
Immunodeficiency is one of the most important causes of mortality associated with Wolf-Hirschhorn syndrome (WHS), a severe rare disease originated by a deletion in chromosome 4p. The WHS candidate 1 (WHSC1) gene has been proposed as one of the main genes responsible for many of the alterations in WHS, but its mechanism of action is still unknown. Here, we present in vivo genetic evidence showing that Whsc1 plays an important role at several points of hematopoietic development. Particularly, our results demonstrate that both differentiation and function of Whsc1-deficient B cells are impaired at several key developmental stages due to profound molecular defects affecting B cell lineage specification, commitment, fitness, and proliferation, demonstrating a causal role for WHSC1 in the immunodeficiency of WHS patients...
May 23, 2017: Cell Reports
https://www.readbyqxmd.com/read/28538104/wnt5a-regulates-the-expression-of-ror2-tyrosine-kinase-receptor-in-ovarian-cancer-cells
#6
Ghamartaj Hossein, Somayeh Arabzadeh, Zahra Salehi-Doulabi, Zeynab Dehghani-Ghobadi, Yasaman Heidarian, Maryam Talebi-Juybari
Wnt5A and Receptor tyrosine kinase-like orphan receptor 2 (ROR2) proteins both regulate developmental processes, cell movement, and cell polarity. The purpose of the present study was to evaluate a possible regulatory role of Wnt5A on ROR2 expression in human ovarian cancer cell lines. Moreover, the expression of Wnt5A and ROR2 mRNA and protein levels were assessed in human epithelial serous ovarian cancer (HSOC) specimens. ROR2 was strongly decreased in cells treated with siRNA against Wnt5A compared to scramble-treated or lipofectamine-treated cells (P<0...
May 24, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28538048/is-the-extensive-anterolateral-approach-for-the-treatment-of-developmental-dysplasia-of-the-hip-more-favorable-than-conventional-surgical-methods
#7
Atilla Citlak, Mehmet E Baki
No abstract text is available yet for this article.
July 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28538046/general-pediatrician-staffed-behavioral-developmental-access-clinic-decreases-time-to-evaluation-of-early-childhood-developmental-disorders
#8
Meghan Harrison, Persephone Jones, Iman Sharif, Matthew D Di Guglielmo
OBJECTIVE: To describe and evaluate the effectiveness of a quality improvement project to decrease wait time to evaluation for children referred to Developmental Behavioral Pediatricians (DBPs). METHODS: The authors created a Behavioral/Developmental Access Clinic (BDAC) staffed by a general pediatrician (GP) and pediatric psychologist. Clinicians in the BDAC provided comprehensive developmental evaluations for children in a discrete age range (<5 yr old). We describe the establishment of the BDAC along with referrals, diagnoses, and recommended follow-up for patients seen by the GP...
May 22, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28538042/counterbalanced-comparison-of-the-bsid-ii-and-bayley-iii-at-eighteen-to-twenty-two-months-corrected-age
#9
Meghan Sharp, Sara B DeMauro
OBJECTIVE: To evaluate differences in developmental assessments using the current version of the Bayley Scales of Infant Development (Bayley-III) as compared to the older BSID-II. Previous studies suggest that average scores on the Bayley-III may be significantly higher than scores on the previous version, but the magnitude and potential impact of differences between these 2 assessments are uncertain. METHODS: We enrolled 77 former preterm infants (born <32 wk gestation and ≤2000 g) at 18 to 22 months corrected age in this randomized crossover study...
May 19, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28538014/precision-medicine-in-pediatric-rheumatology
#10
Joo Guan Yeo, Chin Teck Ng, Salvatore Albani
PURPOSE OF REVIEW: Precision medicine is the tailoring of medical care to subcategories of disease. In pediatric rheumatology, these subcategories must first be defined by their specific molecular immunological profiles, and then the effects of growth and puberty, developmental immunological changes, and differences in treatment options and adherence considered when designing therapeutic strategies. In the present review, we summarize the unmet needs in pediatric rheumatology before such precision medical care can be effectively delivered to affected patients...
May 22, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/28537995/developmental-dysplasia-of-the-hip-a-history-of-innovation
#11
Sandip P Tarpada, Steven J Girdler, Mathew T Morris
Developmental dysplasia of the hip (DDH) is a relatively common malady that has profound consequences in the infant if left untreated. Effective and early treatment of DDH has been praised as one of the most successful ventures of modern pediatric orthopedics. Yet, before the modern management of DDH came into existence, there were extensive technological developments in the field of harnesses, casts, and traction methods. This paper aims to identify the centuries-old history of advancement in DDH treatment and the many important people involved...
May 19, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28535430/dilated-azygos-arch-mimicking-an-aortic-arch-anomaly-during-thoracic-surgery
#12
Ingrid Anne Mandy Schierz, Ettore Piro, Mario Giuffrè, Giuseppa Pinello, Giovanni Corsello
Cardiovascular malformations are frequently associated in patients with esophageal atresia (EA). We observed azygos continuation mimicking an aortic arch anomaly in four newborns with type III EA. They presented concomitant rib anomalies indicating a common developmental defect. Foreknowledge is important for planning thoracotomy or interventional cardiac catheterization in this population.
May 20, 2017: Early Human Development
https://www.readbyqxmd.com/read/28535370/epithelial-patterning-morphogenesis-and-evolution-drosophila-eggshell-as-a-model
#13
REVIEW
Miriam Osterfield, Celeste A Berg, Stanislav Y Shvartsman
Understanding the mechanisms driving tissue and organ formation requires knowledge across scales. How do signaling pathways specify distinct tissue types? How does the patterning system control morphogenesis? How do these processes evolve? The Drosophila egg chamber, where EGF and BMP signaling intersect to specify unique cell types that construct epithelial tubes for specialized eggshell structures, has provided a tractable system to ask these questions. Work there has elucidated connections between scales of development, including across evolutionary scales, and fostered the development of quantitative modeling tools...
May 22, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28535367/pax2-a-keep-to-the-path-sign-on-waddington-s-epigenetic-landscape
#14
Jamie Davies
Developing kidneys have Foxd1(+) stromogenic stem cells and [Six2(+), Pax2(+)] nephrogenic stem cells. In this issue of Developmental Cell, Naiman et al. (2017) show that targeted Pax2 deletion converts nephrogenic cells to the stromogenic path, suggesting that Pax2 normally represses an otherwise inevitable transition between sister lineages.
May 22, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28535311/quantification-of-estradiol-uptake-in-zebrafish-embryos-and-larvae
#15
J Paige Souder, Daniel A Gorelick
Zebrafish are a powerful model system to assess the molecular and cellular effects of exposure to toxic chemicals during embryonic development. To study the effects of environmental endocrine disruptors, embryos and larvae are commonly exposed to supraphysiologic concentrations of these compounds in the water, but their bioavailability in zebrafish is largely unknown. One hypothesis is that supraphysiologic concentrations of estrogens in the water are required to achieve physiologic levels in vivo, however this has not been directly tested...
May 23, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28535262/developmental-studies-of-maize-infesting-picture-winged-flies-diptera-ulidiidae
#16
Gaurav Goyal, Gregg S Nuessly, Dakshina R Seal, Gary J Steck, John L Capinera, Kenneth J Boote
Eleven species of picture-winged flies (Diptera: Ulidiidae) attack maize (Zea mays L.) in the Americas. Field and laboratory studies were used to determine developmental times on sweet corn ears for the three most common species attacking the crop in the United States, Chaetopsis massyla (Walker), Euxesta eluta Loew, and Euxesta stigmatias Loew. Egg plus larval stage developmental times were evaluated in early Spring and late Fall 2009, and late Spring 2010, by placing newly deposited eggs in protected ears in the field...
May 23, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28535207/antheraea-pernyi-lepidoptera-saturniidae-and-its-importance-in-sericulture-food-consumption-and-traditional-chinese-medicine
#17
Wenli Li, Zhengyao Zhang, Lan Lin, Olle Terenius
Sericulture was developed in China in ancient times. Antheraea pernyi Guérin-Méneville was domesticated at least 2,000 yr ago, and Chinese farmers developed artificial rearing of A. pernyi before the 17th century. Today, >60,000 tons of cocoons are produced in China each year, which accounts for 90% of the world production. Despite the widespread utilization of A. pernyi in China and a long history of domestic research, the knowledge of A. pernyi outside China is limited. Therefore, we have in this paper summarized the production, usage, and breeding of A...
May 23, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28534718/jasmonate-suppresses-seedling-soil-emergence-in-arabidopsis-thaliana
#18
Lulu Yao, Yuyu Zheng, Ziqiang Zhu
In addition to defense response, phytohormone jasmonate participates in various plant growth and developmental processes. Nonetheless, its role in the seedling stage is not well defined. We recently report that jasmonate suppresses hypocotyl elongation and promotes cotyledon unfolding in etiolated Arabidopsis seedlings. The molecular basis underlying this phenotype is that jasmonate treatment reduces the biochemical activity of CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1) to stabilize several COP1-targetted transcription factors for eliciting a proportion of light responsive transcriptome...
May 23, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28534656/early-development-in-rett-syndrome-the-benefits-and-difficulties-of-a-birth-cohort-approach
#19
Peter B Marschik, Sanne Lemcke, Christa Einspieler, Dajie Zhang, Sven Bölte, Gillian S Townend, Marlene B Lauritsen
PURPOSES: Typically, early (pre-diagnostic) development in individuals later diagnosed with Rett syndrome (RTT) has been investigated retrospectively using parent reports, medical records and analysis of home videos. In recent years, prospective research designs have been increasingly applied to the investigation of early development in individuals with late phenotypical onset disorders, for example, autism spectrum disorder. METHODS: In this study, data collected by the Danish National Birth Cohort lent itself to prospective exploration of the early development of RTT, in particular early motor-, speech-language, and socio-communicative behaviors, mood, and sleep...
May 23, 2017: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/28534654/functions-and-substrates-of-plastoglobule-localized-metallopeptidase-pgm48
#20
Nazmul H Bhuiyan, Klaas J van Wijk
Plastoglobules (PGs) in chloroplasts are monolayer lipid-protein particles attached to thylakoids. The size and number of PGs per chloroplast respond dynamically to abiotic environmental stresses and developmental transitions. During senescence, the thylakoid membranes and its constituents are dismantled in controlled fashion. Leaf senescence coincides with a dramatic increase in the size of PGs, which is consistent with a functional role of PG in remobilization of thylakoid membrane components. In a recent publication (1) , we showed that PG-localized metallopeptidase PGM48 promotes natural senescence...
May 23, 2017: Plant Signaling & Behavior
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