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https://www.readbyqxmd.com/read/28340455/toxicological-and-behavioral-responses-as-a-tool-to-assess-the-effects-of-natural-and-synthetic-dyes-on-zebrafish-early-life
#1
Flavia R Abe, Jacqueline N Mendonça, Luiz A B Moraes, Gisele A R de Oliveira, Carlos Gravato, Amadeu M V M Soares, Danielle P de Oliveira
Organic dyes extracted from natural sources have been widely used to develop safety and eco-friendly dyes as an alternative to synthetic ones, since the latter are usually precursors of mutagenic compounds. Thereby, toxicity tests to non-target organisms are critical step to develop harmless dyes to environment and in this context, zebrafish early life stages are becoming an important alternative model. We aimed to assess the toxic effects of the synthetic dye Basic Red 51 (BR51, used in cosmetic industry), the natural dye erythrostominone (ERY, a potential commercial dye extracted from fungi) and its photodegradation product (DERY), using zebrafish early life assays...
March 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28336914/inhibition-of-serum-and-glucocorticoid-regulated-kinase-1-as-novel-therapy-for-cardiac-arrhythmia-disorders
#2
Vassilios J Bezzerides, Aifeng Zhang, Ling Xiao, Bridget Simonson, Santosh A Khedkar, Shiro Baba, Filomena Ottaviano, Stacey Lynch, Katherine Hessler, Alan C Rigby, David Milan, Saumya Das, Anthony Rosenzweig
Alterations in sodium flux (INa) play an important role in the pathogenesis of cardiac arrhythmias and may also contribute to the development of cardiomyopathies. We have recently demonstrated a critical role for the regulation of the voltage-gated sodium channel NaV1.5 in the heart by the serum and glucocorticoid regulated kinase-1 (SGK1). Activation of SGK1 in the heart causes a marked increase in both the peak and late sodium currents leading to prolongation of the action potential duration and an increased propensity to arrhythmia...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28335865/zebrafish-developmental-models-of-skeletal-diseases
#3
Lauryn N Luderman, Gokhan Unlu, Ela W Knapik
The zebrafish skeleton shares many similarities with human and other vertebrate skeletons. Over the past years, work in zebrafish has provided an extensive understanding of the basic developmental mechanisms and cellular pathways directing skeletal development and homeostasis. This review will focus on the cell biology of cartilage and bone and how the basic cellular processes within chondrocytes and osteocytes function to assemble the structural frame of a vertebrate body. We will discuss fundamental functions of skeletal cells in production and secretion of extracellular matrix and cellular activities leading to differentiation of progenitors to mature cells that make up the skeleton...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28335864/using-zebrafish-to-study-kidney-development-and-disease
#4
Stephanie Jerman, Zhaoxia Sun
The kidneys are a crucial pair of organs that are responsible for filtering the blood to remove waste, maintain electrolyte and water homeostasis, and regulate blood pressure. There are a number of factors, both genetic and environmental, that can impair the function of the kidneys resulting in significant morbidity and mortality for millions of people affected by kidney disease worldwide. The zebrafish, Danio rerio, has emerged as an attractive vertebrate model in the study of kidney development and disease and has proven to be a powerful tool in the advancement of how kidney development occurs in vertebrates and how the kidney repairs itself after injury...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28335862/modeling-infectious-diseases-in-the-context-of-a-developing-immune-system
#5
Samrah Masud, Vincenzo Torraca, Annemarie H Meijer
Zebrafish has been used for over a decade to study the mechanisms of a wide variety of inflammatory disorders and infections, with models ranging from bacterial, viral, to fungal pathogens. Zebrafish has been especially relevant to study the differentiation, specialization, and polarization of the two main innate immune cell types, the macrophages and the neutrophils. The optical accessibility and the early appearance of myeloid cells that can be tracked with fluorescent labels in zebrafish embryos and the ability to use genetics to selectively ablate or expand immune cell populations have permitted studying the interaction between infection, development, and metabolism...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28335860/-muscling-throughout-life-integrating-studies-of-muscle-development-homeostasis-and-disease-in-zebrafish
#6
Michelle F Goody, Erin V Carter, Elisabeth A Kilroy, Lisa Maves, Clarissa A Henry
The proper development and function of skeletal muscle is vital for health throughout the lifespan. Skeletal muscle function enables posture, breathing, and locomotion; and also impacts systemic processes-such as metabolism, thermoregulation, and immunity. Diseases of skeletal muscle (myopathies, muscular dystrophies) and even some neurological, age-related, and metabolic diseases compromise muscle function and negatively affect health span and quality of life. There have been numerous, recent examples of studies on skeletal muscle development with exciting, therapeutic implications for muscle diseases...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28335859/making-it-new-again-insight-into-liver-development-regeneration-and-disease-from-zebrafish-research
#7
Shuang Wang, Sophie R Miller, Elke A Ober, Kirsten C Sadler
The adult liver of most vertebrates is predominantly comprised of hepatocytes. However, these cells must work in concert with biliary, stellate, vascular, and immune cells to accomplish the vast array of hepatic functions required for physiological homeostasis. Our understanding of liver development was accelerated as zebrafish emerged as an ideal vertebrate system to study embryogenesis. Through work in zebrafish and other models, it is now clear that the cells in the liver develop in a coordinated fashion during embryogenesis through a complex yet incompletely understood set of molecular guidelines...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28335858/netting-novel-regulators-of-hematopoiesis-and-hematologic-malignancies-in-zebrafish
#8
Wanda Kwan, Trista E North
Zebrafish are one of the preeminent model systems for the study of blood development (hematopoiesis), hematopoietic stem and progenitor cell (HSPC) biology, and hematopathology. The zebrafish hematopoietic system shares strong similarities in functional populations, genetic regulators, and niche interactions with its mammalian counterparts. These evolutionarily conserved characteristics, together with emerging technologies in live imaging, compound screening, and genetic manipulation, have been employed to successfully identify and interrogate novel regulatory mechanisms and molecular pathways that guide hematopoiesis...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28335857/modeling-syndromic-congenital-heart-defects-in-zebrafish
#9
Meagan G Grant, Victoria L Patterson, Daniel T Grimes, Rebecca D Burdine
Cardiac development is a dynamic process regulated by spatial and temporal cues that are integrated to effect molecular, cellular, and tissue-level events that form the adult heart. Disruption of these highly orchestrated events can be devastating for cardiac form and function. Aberrations in heart development result in congenital heart defects (CHDs), which affect 1 in 100 infants in the United States each year. Zebrafish have proven informative as a model organism to understand both heart development and the mechanisms associated with CHDs due to the similarities in heart morphogenesis among vertebrates, as well as their genetic tractability and amenability to live imaging...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28334843/a152t-tau-allele-causes-neurodegeneration-that-can-be-ameliorated-in-a-zebrafish-model-by-autophagy-induction
#10
Ana Lopez, Suzee E Lee, Kevin Wojta, Eliana Marisa Ramos, Eric Klein, Jason Chen, Adam L Boxer, Maria Luisa Gorno-Tempini, Daniel H Geschwind, Lars Schlotawa, Nikolay V Ogryzko, Eileen H Bigio, Emily Rogalski, Sandra Weintraub, Marsel M Mesulam, Angeleen Fleming, Giovanni Coppola, Bruce L Miller, David C Rubinsztein
Mutations in the gene encoding tau (MAPT) cause frontotemporal dementia spectrum disorders. A rare tau variant p.A152T was reported as a risk factor for frontotemporal dementia spectrum and Alzheimer's disease in an initial case-control study. Such findings need replication in an independent cohort. We analysed an independent multinational cohort comprising 3100 patients with neurodegenerative disease and 4351 healthy control subjects and found p.A152T associated with significantly higher risk for clinically defined frontotemporal dementia and progressive supranuclear palsy syndrome...
February 9, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334757/perturbations-in-cell-signaling-elicit-early-cardiac-defects-in-mucopolysaccharidosis-type-ii
#11
Roberto Costa, Andrea Urbani, Marika Salvalaio, Stefania Bellesso, Domenico Cieri, Ilaria Zancan, Mirella Filocamo, Paolo Bonaldo, Ildiko Szabò, Rosella Tomanin, Enrico Moro
Morphogens release and activity can be negatively affected by an impaired glycosaminoglycans (GAGs) turnover and proteoglycans assembly in the extracellular matrix, leading to altered tissue morphogenesis. In this work, we show that loss of Iduronate-2-sulfatase (IDS) activity, affecting GAGs catabolism and responsible for a life-threatening valvulopathy in mucopolysaccharidosis type II (MPSII), triggers early Sonic Hedgehog (Shh) and Wnt/β-catenin signaling defects, leading to aberrant heart development and atrioventricular valve formation in a zebrafish model...
February 21, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28332618/the-chemokine-receptor-cxcr4-promotes-granuloma-formation-by-sustaining-a-mycobacteria-induced-angiogenesis-programme
#12
Vincenzo Torraca, Claudia Tulotta, B Ewa Snaar-Jagalska, Annemarie H Meijer
CXC chemokine receptor 4 plays a critical role in chemotaxis and leukocyte differentiation. Furthermore, there is increasing evidence that links this receptor to angiogenesis. Using the well-established zebrafish-Mycobacterium marinum model for tuberculosis, angiogenesis was recently found to be important for the development of cellular aggregates called granulomas that contain the mycobacteria and are the hallmark of tuberculosis disease. Here, we found that initiation of the granuloma-associated proangiogenic programme requires CXCR4 signalling...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28331970/disease-modeling-in-genetic-kidney-diseases-zebrafish
#13
REVIEW
Heiko Schenk, Janina Müller-Deile, Mark Kinast, Mario Schiffer
Growing numbers of translational genomics studies are based on the highly efficient and versatile zebrafish (Danio rerio) vertebrate model. The increasing types of zebrafish models have improved our understanding of inherited kidney diseases, since they not only display pathophysiological changes but also give us the opportunity to develop and test novel treatment options in a high-throughput manner. New paradigms in inherited kidney diseases have been developed on the basis of the distinct genome conservation of approximately 70 % between zebrafish and humans in terms of existing gene orthologs...
March 22, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28331079/characterization-and-vaccine-potential-of-membrane-vesicles-produced-by-francisella-noatunensis-sup-orientalis-in-an-adult-zebrafish-model
#14
Leidy Lagos, Julia I Tandberg, Urska Repnik, Preben Boysen, Erik Ropstad, Deepa Varkey, Ian T Paulsen, Hanne C Winther-Larsen
Vaccine development against extracellular bacteria has been important for the sustainability of the aquaculture industry. In contrast, infections with intracellular pathogens remain largely an unresolved problem. Francisella noatunensis subspecies orientalis (Fno) are Gram-negative, facultative intracellular bacteria that cause the disease francisellosis in fish. Francisellosis is commonly characterized as a chronic granulomatous disease with high morbidity and can result in high mortality depending on the host...
March 22, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28329862/the-transcriptome-of-the-zebrafish-embryo-after-chemical-exposure-a-meta-analysis
#15
Andreas Schüttler, Kristin Reiche, Rolf Altenburger, Wibke Busch
Numerous studies have been published in the past years investigating the transcriptome of the zebrafish embryo (ZFE) upon being subjected to chemical stress. Aiming at a more mechanistic understanding of the results of such studies, knowledge about commonalities of transcript regulation in response to chemical stress is needed. Thus, our goal in this study was to identify and interpret genes and gene sets constituting a general response to chemical exposure. Therefore, we aggregated and reanalyzed published toxicogenomics data obtained with the ZFE...
February 27, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28329724/accurate-predictions-of-postmortem-interval-using-linear-regression-analyses-of-gene-meter-expression-data
#16
M Colby Hunter, Alex E Pozhitkov, Peter A Noble
In criminal and civil investigations, postmortem interval is used as evidence to help sort out circumstances at the time of human death. Many biological, chemical, and physical indicators can be used to determine the postmortem interval - but most are not accurate. Here, we sought to validate an experimental design to accurately predict the time of death by analyzing the expression of hundreds of upregulated genes in two model organisms, the zebrafish and mouse. In a previous study, the death of healthy adults was conducted under strictly controlled conditions to minimize the effects of confounding factors such as lifestyle and temperature...
March 4, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28329685/critical-role-for-gab2-in-neuroblastoma-pathogenesis-through-the-promotion-of-shp2-mycn-cooperation
#17
Xiaoling Zhang, Zhiwei Dong, Cheng Zhang, Choong Yong Ung, Shuning He, Ting Tao, Andre M Oliveira, Alexander Meves, Baoan Ji, A Thomas Look, Hu Li, Benjamin G Neel, Shizhen Zhu
Growing evidence suggests a major role for Src-homology-2-domain-containing phosphatase 2 (SHP2/PTPN11) in MYCN-driven high-risk neuroblastoma, although biologic confirmation and a plausible mechanism for this contribution are lacking. Using a zebrafish model of MYCN-overexpressing neuroblastoma, we demonstrate that mutant ptpn11 expression in the adrenal gland analog of MYCN transgenic fish promotes the proliferation of hyperplastic neuroblasts, accelerates neuroblastomagenesis, and increases tumor penetrance...
March 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28327640/compatibility-study-of-danggui-buxue-tang-on-chemical-ingredients-angiogenesis-and-endothelial-function
#18
Ping-Lan Lin, Zhi-Cheng Li, Rui-Fang Xie, You-Hua Wang, Xin Zhou
Danggui Buxue Tang (DBT) is a classic Chinese herbal formula which consists of Astragali mongholici Radix and Angelica sinensis Radix (ASR). For chemical ingredients, HPLC were performed. Results showed compared with single herbs, DBT decoction could promote the dissolution of ingredients such as ferulic acid and calycosin. Furthermore, when ratio of AMR to ASR was 5 to 1, synthetic score was the best. For angiogenesis, normal and injured zebrafish model were applied. Results showed DBT and its ingredients had angiogenesis effects on Sub Intestinal vessels (SIVs) of normal zebrafish...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28327131/transcriptome-analysis-of-pancreatic-cells-across-distant-species-highlights-novel-important-regulator-genes
#19
Estefania Tarifeño-Saldivia, Arnaud Lavergne, Alice Bernard, Keerthana Padamata, David Bergemann, Marianne L Voz, Isabelle Manfroid, Bernard Peers
BACKGROUND: Defining the transcriptome and the genetic pathways of pancreatic cells is of great interest for elucidating the molecular attributes of pancreas disorders such as diabetes and cancer. As the function of the different pancreatic cell types has been maintained during vertebrate evolution, the comparison of their transcriptomes across distant vertebrate species is a means to pinpoint genes under strong evolutionary constraints due to their crucial function, which have therefore preserved their selective expression in these pancreatic cell types...
March 21, 2017: BMC Biology
https://www.readbyqxmd.com/read/28327129/short-term-overfeeding-of-zebrafish-with-normal-or-high-fat-diet-as-a-model-for-the-development-of-metabolically-healthy-versus-unhealthy-obesity
#20
Kathrin Landgraf, Susanne Schuster, Andrej Meusel, Antje Garten, Thomas Riemer, Dorit Schleinitz, Wieland Kiess, Antje Körner
BACKGROUND: Obese individuals differ in their risk of developing metabolic and cardiovascular complications depending on fat distribution (subcutaneous versus visceral) and adipose tissue (AT) phenotype (hyperplasic versus hypertrophic). However, the exact mechanisms which determine whether an obese individual is metabolically healthy or unhealthy are not clear, and analyses of the underlying pathomechanisms are limited by the lack of suitable in vivo models in which metabolically healthy versus metabolically unhealthy AT accumulation can be specifically induced...
March 21, 2017: BMC Physiology
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