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https://www.readbyqxmd.com/read/28719799/mesencephalic-astrocyte-derived-neurotrophic-factor-manf-a-new-player-in-endoplasmic-reticulum-diseases-structure-biology-and-therapeutic-roles
#1
REVIEW
Yeawon Kim, Sun-Ji Park, Ying Maggie Chen
Mesencephalic astrocyte-derived neurotrophic factor (MANF), a newly identified 18-kDa soluble protein, localizes to the luminal endoplasmic reticulum (ER), whose stress can stimulate MANF expression and secretion. In Drosophila and zebrafish, MANF regulates dopaminergic neuron development. In contrast, in mice, MANF deficiency leads to diabetes and activation of the unfolded protein response. Recent studies in rodent models have demonstrated that MANF mitigates diabetes, exerts neurotrophic function in neurodegenerative disease, protects cardiomyocytes and neurons in myocardial infarction and cerebral ischemia, respectively, and promotes immune cell phenotype switch from proinflammatory macrophages to prorepair anti-inflammatory macrophages...
June 29, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28698677/precise-spatio-temporal-control-of-rapid-optogenetic-cell-ablation-with-mem-killerred-in-zebrafish
#2
C Buckley, M T Carvalho, L K Young, S A Rider, C McFadden, C Berlage, R F Verdon, J M Taylor, J M Girkin, J J Mullins
The ability to kill individual or groups of cells in vivo is important for studying cellular processes and their physiological function. Cell-specific genetically encoded photosensitizing proteins, such as KillerRed, permit spatiotemporal optogenetic ablation with low-power laser light. We report dramatically improved resolution and speed of cell targeting in the zebrafish kidney through the use of a selective plane illumination microscope (SPIM). Furthermore, through the novel incorporation of a Bessel beam into the SPIM imaging arm, we were able to improve on targeting speed and precision...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28695384/carbonic-anhydrase-inhibitors-induce-developmental-toxicity-during-zebrafish-embryogenesis-especially-in-the-inner-ear
#3
Hiroko Matsumoto, Shoko Fujiwara, Hisako Miyagi, Nobuhiro Nakamura, Yasuhiro Shiga, Toshihiro Ohta, Mikio Tsuzuki
In vertebrates, carbonic anhydrases (CAs) play important roles in ion transport and pH regulation in many organs, including the eyes, kidneys, central nervous system, and inner ear. In aquatic organisms, the enzyme is inhibited by various chemicals present in the environment, such as heavy metals, pesticides, and pharmaceuticals. In this study, the effects of CA inhibitors, i.e., sulfonamides [ethoxyzolamide (EZA), acetazolamide (AZA), and dorzolamide (DZA)], on zebrafish embryogenesis were investigated. In embryos treated with the sulfonamides, abnormal development, such as smaller otoliths, an enlarged heart, an irregular pectoral fin, and aberrant swimming behavior, was observed...
July 10, 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/28673044/ctenopharyngodon-idella-ikk%C3%AE-interacts-with-pkr-and-i%C3%AE%C2%BAb%C3%AE
#4
Haizhou Wang, Qun Xu, Xiaowen Xu, Yousheng Hu, Qunhao Hou, Youlin Zhu, Chengyu Hu
Inhibitor of nuclear factor kappa-B kinase β (IKKβ) is a subunit of the IKK complex. It can activate the NF-κB pathway through phosphorylating IκB in response to a wide range of stimuli. In the present study, an IKKβ gene from grass carp (Ctenopharyngodon idella; KT282114) was cloned and identified by homologous cloning and rapid-amplification of cDNA ends (RACE) technique. The complete CiIKKβ cDNA is 3428 bp in length, with the longest open reading frame (ORF) of 2337 bp encoding a polypeptide of 778 amino acids...
June 29, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28656378/comparative-transcriptomic-analysis-identifies-evolutionarily-conserved-gene-products-in-the-vertebrate-renal-distal-convoluted-tubule
#5
REVIEW
Yuya Sugano, Chiara Cianciolo Cosentino, Dominique Loffing-Cueni, Stephan C F Neuhauss, Johannes Loffing
Understanding the molecular basis of the complex regulatory networks controlling renal ion transports is of major physiological and clinical importance. In this study, we aimed to identify evolutionarily conserved critical players in the function of the renal distal convoluted tubule (DCT) by a comparative transcriptomic approach. We generated a transgenic zebrafish line with expression of the red fluorescent mCherry protein under the control of the zebrafish DCT-specific promoter of the thiazide-sensitive NaCl cotransporter (NCC)...
June 27, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28647853/are-podocytes-motile
#6
REVIEW
Nicole Endlich, Florian Siegerist, Karlhans Endlich
Podocytes, the postmitotic and highly branched epithelial cells of the glomerulus, play a pivotal role for the function of the glomerular filtration barrier and the development of chronic kidney disease. It has long been discussed whether podocytes in vivo are motile and can laterally migrate in a coordinated way along the capillaries until they reach the position of naked glomerular basement membrane often found in podocytopathies. Such motility would also be the prerequisite for the replacement of lost podocytes by progenitor cells...
June 24, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28630014/impact-of-molecular-hydrogen-treatments-on-the-innate-immune-activity-and-survival-of-zebrafish-danio-rerio-challenged-with-aeromonas-hydrophila
#7
Zhenyu Hu, Bingqian Wu, Fanhong Meng, Zejian Zhou, Hui Lu, Heng Zhao
Recently, molecular hydrogen has been reported to have a suppressive effect on inflammation in human and rodent models. The aim of this study was to evaluate the preventive effects of hydrogen-rich water (HRW) on zebrafish challenged by A. hydrophila. We have found an increased survival rate of bacteria-challenged zebrafish subjected to the HRW immersion treatment. Furthermore, we have revealed that HRW was able to block multiplication of A. hydrophila in zebrafish. In addition, treatment of zebrafish infected by A...
August 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28629823/characterization-and-biological-function-analysis-of-the-trim47-gene-from-common-carp-cyprinus-carpio
#8
Yeda Wang, Ming Kuang, Yuanan Lu, Li Lin, Xueqin Liu
The TRIM family protein was known to play an important role in many cellular processes, including potential antiviral activity, which has attracted lots of attention. In this study, a TRIM47 homolog from common carp (Cyprinus carpio) was cloned and the full length coding DNA sequence (CDS) of this gene was analyzed, results showed that there was a 97% similarity between common carp and zebrafish (Danio rerio), but only 18% similarity with that of human (Homo sapiens) and mouse (Mus musculus). The tissue distribution analysis showed TRIM47 had the highest mRNA level in the brain, a few immune related organs such as liver and kidney also had a relatively high level of TRIM47 expression...
June 16, 2017: Gene
https://www.readbyqxmd.com/read/28627438/genome-wide-identification-phylogeny-and-expression-of-bone-morphogenetic-protein-genes-in-tetraploidized-common-carp-cyprinus-carpio
#9
Lin Chen, Chuanju Dong, Shengnan Kong, Jiangfan Zhang, Xuejun Li, Peng Xu
Bone morphogenetic proteins (Bmps) are a group of signaling molecules known to play important roles during formation and maintenance of various organs, not only bone, but also muscle, blood and so on. Common carp (Cyprinus carpio) is one of the most intensively studied fish due to its economic and environmental importance. Besides, common carp had encountered an additional round of whole genome duplication (WGD) compared with many closely related diploid teleost, which make it one of the most important models for genome evolutionary studies in teleost...
June 13, 2017: Gene
https://www.readbyqxmd.com/read/28625504/mutations-in-armc9-which-encodes-a-basal-body-protein-cause-joubert-syndrome-in-humans-and-ciliopathy-phenotypes-in-zebrafish
#10
Julie C Van De Weghe, Tamara D S Rusterholz, Brooke Latour, Megan E Grout, Kimberly A Aldinger, Ranad Shaheen, Jennifer C Dempsey, Sateesh Maddirevula, Yong-Han H Cheng, Ian G Phelps, Matthias Gesemann, Himanshu Goel, Ohad S Birk, Talal Alanzi, Rifaat Rawashdeh, Arif O Khan, Michael J Bamshad, Deborah A Nickerson, Stephan C F Neuhauss, William B Dobyns, Fowzan S Alkuraya, Ronald Roepman, Ruxandra Bachmann-Gagescu, Dan Doherty
Joubert syndrome (JS) is a recessive neurodevelopmental disorder characterized by hypotonia, ataxia, abnormal eye movements, and variable cognitive impairment. It is defined by a distinctive brain malformation known as the "molar tooth sign" on axial MRI. Subsets of affected individuals have malformations such as coloboma, polydactyly, and encephalocele, as well as progressive retinal dystrophy, fibrocystic kidney disease, and liver fibrosis. More than 35 genes have been associated with JS, but in a subset of families the genetic cause remains unknown...
July 6, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28614822/drug-discovery-to-halt-the-progression-of-acute-kidney-injury-to-chronic-kidney-disease-a-case-for-phenotypic-drug-discovery-in-acute-kidney-injury
#11
Neil Hukriede, Andreas Vogt, Mark de Caestecker
The cellular responses that occur following acute kidney injury (AKI) are complex and dynamic, involving multiple cells types and molecular pathways. For this reason, early selection of defined molecular targets for therapeutic intervention is unlikely to be effective in complex in vivo models of AKI, let alone Phase 3 clinical trials in patients with even more complex AKI pathobiology. Phenotypic screening using zebrafish provides an attractive alternative that does not require prior knowledge of molecular targets and may identify compounds that modify multiple targets that might be missed in more traditional target-based screens...
June 15, 2017: Nephron
https://www.readbyqxmd.com/read/28605371/precise-cellular-ablation-approach-for-modeling-acute-kidney-injury-in-developing-zebrafish
#12
Rohan Datta, Ada Wong, Troy Camarata, Farhana Tamanna, Imran Ilahi, Aleksandr Vasilyev
Acute Kidney Injury (AKI) is a common medical condition with a high mortality rate. With the repair abilities of the kidney, it is possible to restore adequate kidney function after supportive treatment. However, a better understanding of how nephron cell death and repair occur on the cellular level is required to minimize cell death and to enhance the regenerative process. The zebrafish pronephros is a good model system to accomplish this goal because it contains anatomical segments that are similar to the mammalian nephron...
June 3, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28588485/beneficial-effects-and-toxicity-studies-of-xian-ling-gu-bao-on-bone-metabolism-in-ovariectomized-rats
#13
Hao Wu, Qingxiang Zhong, Jing Wang, Man Wang, Fang Fang, Zhi Xia, Rongling Zhong, Houcai Huang, Zhongcheng Ke, Yingjie Wei, Liang Feng, Ziqi Shi, E Sun, Jie Song, Xiaobin Jia
Xian-ling-gu-bao (XLGB) is a well-known patented traditional Chinese prescription widely used to treat osteoporosis, osteoarthritis, aseptic bone necrosis, or climacteric syndrome. However, recent reports have suggested that XLGB may cause liver injury in humans. In the present study, we aimed to evaluate the efficacy of XLGB in the prevention of osteoporosis in the zebrafish and ovariectomized (OVX) rats, both of which have been used as osteoporosis models. The safety of XLGB after long-term administration to OVX rats was also assessed...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28579318/the-zebrafish-kidney-mutant-zeppelin-reveals-that-brca2-fancd1-is-essential-for-pronephros-development
#14
Paul T Kroeger, Bridgette E Drummond, Rachel Miceli, Michael McKernan, Gary F Gerlach, Amanda N Marra, Annemarie Fox, Kristen K McCampbell, Ignaty Leshchiner, Adriana Rodriguez-Mari, Ruth BreMiller, Ryan Thummel, Alan J Davidson, John Postlethwait, Wolfram Goessling, Rebecca A Wingert
The zebrafish kidney is conserved with other vertebrates, making it an excellent genetic model to study renal development. The kidney collects metabolic waste using a blood filter with specialized epithelial cells known as podocytes. Podocyte formation is poorly understood but relevant to many kidney diseases, as podocyte injury leads to progressive scarring and organ failure. zeppelin (zep) was isolated in a forward screen for kidney mutants and identified as a homozygous recessive lethal allele that causes reduced podocyte numbers, deficient filtration, and fluid imbalance...
August 1, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28575649/genetic-variation-driven-gene-expression-changes-highlight-genes-with-important-functions-for-kidney-disease
#15
Yi-An Ko, Huiguang Yi, Chengxiang Qiu, Shizheng Huang, Jihwan Park, Nora Ledo, Anna Köttgen, Hongzhe Li, Daniel J Rader, Michael A Pack, Christopher D Brown, Katalin Susztak
Chronic kidney disease (CKD) is a complex gene-environmental disease affecting close to 10% of the US population. Genome-wide association studies (GWASs) have identified sequence variants, localized to non-coding genomic regions, associated with kidney function. Despite these robust observations, the mechanism by which variants lead to CKD remains a critical unanswered question. Expression quantitative trait loci (eQTL) analysis is a method to identify genetic variation associated with gene expression changes in specific tissue types...
June 1, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28549975/knockdown-of-epigenetic-transcriptional-co-regulator-brd2a-disrupts-apoptosis-and-proper-formation-of-hindbrain-and-midbrain-hindbrain-boundary-mhb-region-in-zebrafish
#16
Tami Murphy, Heather Melville, Eliza Fradkin, Giana Bistany, Gregory Branigan, Kelly Olsen, Catharine R Comstock, Hayley Hanby, Ellie Garbade, Angela J DiBenedetto
Brd2 is a member of the bromodomain-extraterminal domain (BET) family of proteins and functions as an acetyl-histone-directed transcriptional co-regulator and recruitment scaffold in chromatin modification complexes affecting signal-dependent transcription. While Brd2 acts as a protooncogene in mammalian blood, developmental studies link it to regulation of neuronal apoptosis and epilepsy, and complete knockout of the gene is invariably embryonic lethal. In Drosophila, the Brd2 homolog acts as a maternal effect factor necessary for segment formation and identity and proper expression of homeotic loci, including Ultrabithorax and engrailed...
August 2017: Mechanisms of Development
https://www.readbyqxmd.com/read/28539358/protein-kinase-c-%C3%AE%C2%B5-stabilizes-%C3%AE-catenin-and-regulates-its-subcellular-localization-in-podocytes
#17
Michelle Duong, Xuejiao Yu, Beina Teng, Patricia Schroder, Hermann Haller, Susanne Eschenburg, Mario Schiffer
Kidney disease has been linked to dysregulated signaling via protein kinase C (PKC) in kidney cells such as podocytes. PKCα is a conventional isoform of PKC and a well-known binding partner of β-catenin, which promotes its degradation. β-Catenin is the main effector of the canonical Wnt pathway and is critical in cell adhesion. However, whether other PKC isoforms interact with β-catenin has not been studied systematically. Here we demonstrate that PKCε-deficient mice, which develop proteinuria and glomerulosclerosis, display a lower β-catenin expression compared to PKC wildtype mice, consistent with an altered phenotype of podocytes in culture...
May 24, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28530676/mutations-in-dzip1l-which-encodes-a-ciliary-transition-zone-protein-cause-autosomal-recessive-polycystic-kidney-disease
#18
Hao Lu, Maria C Rondón Galeano, Elisabeth Ott, Geraldine Kaeslin, P Jaya Kausalya, Carina Kramer, Nadina Ortiz-Brüchle, Nadescha Hilger, Vicki Metzis, Milan Hiersche, Shang Yew Tay, Robert Tunningley, Shubha Vij, Andrew D Courtney, Belinda Whittle, Elke Wühl, Udo Vester, Björn Hartleben, Steffen Neuber, Valeska Frank, Melissa H Little, Daniel Epting, Peter Papathanasiou, Andrew C Perkins, Graham D Wright, Walter Hunziker, Heon Yung Gee, Edgar A Otto, Klaus Zerres, Friedhelm Hildebrandt, Sudipto Roy, Carol Wicking, Carsten Bergmann
Autosomal recessive polycystic kidney disease (ARPKD), usually considered to be a genetically homogeneous disease caused by mutations in PKHD1, has been associated with ciliary dysfunction. Here, we describe mutations in DZIP1L, which encodes DAZ interacting protein 1-like, in patients with ARPKD. We further validated these findings through loss-of-function studies in mice and zebrafish. DZIP1L localizes to centrioles and to the distal ends of basal bodies, and interacts with septin2, a protein implicated in maintenance of the periciliary diffusion barrier at the ciliary transition zone...
July 2017: Nature Genetics
https://www.readbyqxmd.com/read/28528635/relocation-is-the-key-to-successful-correlative-fluorescence-and-scanning-electron-microscopy
#19
Delfine Cheng, Gerald Shami, Marco Morsch, Minh Huynh, Patrick Trimby, Filip Braet
In this chapter the authors report on an automated hardware and software solution enabling swift correlative sample array mapping of fluorescently stained molecules within cells and tissues across length scales. Samples are first observed utilizing wide-field optical and fluorescence microscopy, followed by scanning electron microscopy, using calibration points on a dedicated sample-relocation holder. We investigated HeLa cells in vitro, fluorescently labeled for monosialoganglioside one (GM-1), across both imaging platforms within tens of minutes of initial sample preparation...
2017: Methods in Cell Biology
https://www.readbyqxmd.com/read/28526571/the-antiviral-signaling-mediated-by-black-carp-mda5-is-positively-regulated-by-lgp2
#20
Ji Liu, Jun Li, Jun Xiao, Hui Chen, Liang Lu, Xu Wang, Yu Tian, Hao Feng
Melanoma differentiation-associated gene 5 (MDA5) belongs to RIG-I like receptor (RLR) family, which detects cytosolic viral RNA component in immune response. In this study, MDA5 orthologue of black carp (Mylopharyngodon piceus) has been cloned and characterized. The full-length cDNA of black carp MDA5 (bcMDA5) comprises 3244 nucleotides and the predicted bcMDA5 protein contains 984 amino acids. The constitutive transcription of bcMDA5 was extremely low in all the tested tissues, which included gill, skin, muscle, intestine, kidney, spleen, liver and heart...
May 16, 2017: Fish & Shellfish Immunology
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