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Cell and Tissue Research

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https://www.readbyqxmd.com/read/28436000/foxo3a-suppression-and-vps34-activity-are-essential-to-anti-atrophic-effects-of-leucine-in-skeletal-muscle
#1
Igor L Baptista, João G Silvestre, William J Silva, Siegfried Labeit, Anselmo S Moriscot
Our aim is to gain insight into the mechanisms underlying the anti-atrophic effects of leucine, namely, the way that this amino acid can restrain the up-regulation of MuRF1 and Mafbx/Atrogin-1 in muscle atrophy. Male rats received dietary leucine supplementation for 1-3 days, during which time their hind limbs were immobilized. Our results showed that leucine inhibited Forkhead Box O3 (FoxO3a) translocation to cell nuclei. In addition, leucine was able to reverse the expected reduction of FoXO3a ubiquitination caused by immobilization...
April 24, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28434079/cell-culture-complications-due-to-mechanical-release-of-atp-and-activation-of-purinoceptors
#2
REVIEW
Geoffrey Burnstock, Gillian E Knight
There is abundant evidence that ATP (adenosine 5'-triphosphate) is released from a variety of cultured cells in response to mechanical stimulation. The release mechanism involved appears to be a combination of vesicular exocytosis and connexin and pannexin hemichannels. Purinergic receptors on cultured cells mediate both short-term purinergic signalling of secretion and long-term (trophic) signalling such as proliferation, migration, differentiation and apoptosis. We aim in this review to bring to the attention of non-purinergic researchers using tissue culture that the release of ATP in response to mechanical stress evoked by the unavoidable movement of the cells acting on functional purinergic receptors on the culture cells is likely to complicate the interpretation of their data...
April 22, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28432467/renal-skin-syndromes
#3
REVIEW
Cristina Has, Yinghong He
Renal-skin syndroms are a group of genetic disorders with renal and cutaneous manifestations that target molecular components present in both organs. Inherited renal-skin syndromes are mainly associated with defects of cell-matrix adhesion. We provide a non-exhaustive overview of the main molecular players at cell-matrix adhesions in mouse models and in human genetic disorders affecting kidney and skin. Renal and urinary tract involvement is described in all four major epidermolysis bullosa types and, in particular, in junctional subtypes and in recessive dystrophic epidermolysis bullosa...
April 22, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28432466/calpain-inhibition-prevents-flotillin-re-ordering-and-src-family-activation-during-capacitation
#4
Deneb Maldonado-García, Monica L Salgado-Lucio, Ana L Roa-Espitia, Tania Reyes-Miguel, Enrique O Hernández-González
Prior to fertilization, mammalian sperm undergo several molecular, biochemical and physiological changes in a process termed capacitation. However, the mechanisms explaining the involvement of cytoskeletal remodeling and membrane re-ordering in each process prior to fertilization remain poorly understood. We found that the migration of both flotillin microdomains and Src family kinases towards the apical ridge of guinea pig sperm occurs under capacitating conditions. This re-ordering is associated with spectrin cleavage by calpain...
April 22, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28432465/ppar%C3%AE-activation-regulates-lipid-droplet-formation-and-lactate-production-in-rat-sertoli-cells
#5
A Gorga, G M Rindone, M Regueira, E H Pellizzari, M C Camberos, S B Cigorraga, M F Riera, M N Galardo, S B Meroni
Sertoli cells provide the structural and nutritional support for germ cell development; they actively metabolize glucose and convert it to lactate, which is an important source of energy for germ cells. Furthermore, Sertoli cells can oxidize fatty acids, a metabolic process that is assumed to fulfill their own energy requirements. Fatty acids are stored as triacylglycerides within lipid droplets. The regulation of fatty acid storage in conjunction with the regulation of lactate production may thus be relevant to seminiferous tubule physiology...
April 21, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28432464/insights-into-autosomal-dominant-polycystic-kidney-disease-by-quantitative-mass-spectrometry-based-proteomics
#6
REVIEW
Britta Diedrich, Jörn Dengjel
Autosomal dominant polycystic kidney disease (ADPKD) is a common monogenetic disorder that is caused by mutations in the genes PKD1 and PKD2 encoding polycystin-1 and polycystin-2, respectively. Polycystin-1 and -2 form a complex, interact with several proteins involved in signal transduction and localize to discrete subcellular positions, most importantly the primary cilium. Whereas the causative mutations leading to ADPKD are known, the underlying deregulated cellular pathways are not well understood. In the current review, we introduce state-of-the-art mass spectrometry (MS)-based proteomic techniques and summarize their use in kidney and ADPKD research...
April 21, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28429073/urinary-extracellular-vesicles-a-promising-shortcut-to-novel-biomarker-discoveries
#7
REVIEW
Karina Barreiro, Harry Holthofer
Proteomic and genomic techniques have reached full maturity and are providing unforeseen details for the comprehensive understanding of disease pathologies at a fraction of previous costs. However, for kidney diseases, many gaps in such information remain to inhibit major advances in the prevention, treatment and diagnostics of these devastating diseases, which have enormous global impact. The discovery of ubiquitous extracellular vesicles (EV) in all bodily fluids is rapidly increasing the fundamental knowledge of disease mechanisms and the ways in which cells communicate with distant locations in processes of cancer spread, immunological regulation, barrier functions and general modulation of cellular activity...
April 20, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28429072/kidney-development-and-perspectives-for-organ-engineering
#8
REVIEW
Ganna Reint, Aleksandra Rak-Raszewska, Seppo J Vainio
Organ transplantation is currently the best strategy for treating end stage renal disease (ESRD) but the numbers of donor kidneys available are not sufficient to meet the needs of the ever-increasing ESRD population. Therefore, developments in the field of tissue engineering are necessary to provide alternative treatments. Decellularization and three-dimensional (3D) bioprinting strategies may serve as attractive novel options. Since successful tissue engineering requires an in -depth understanding of organ development and regulatory pathways, we discuss signaling in renal development and the composition of the renal extracellular matrix before presenting progress in the decellularization and 3D bioprinting fields...
April 20, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28413863/metabolism-and-homeostasis-in-the-kidney-metabolic-regulation-through-insulin-signaling-in-the-kidney
#9
REVIEW
Alexander Kuczkowski, Paul T Brinkkoetter
Metabolic signaling pathways orchestrate the dynamic turnover between catabolic and anabolic processes. Thereby, they ensure the viability of the cell and assure proper function of the tissue in changing environments regarding the availability of nutrients. Yet, renal cells are not considered to be prime targets of metabolic signaling. Research of the last decade has proposed new roles of specifically altered metabolic signaling pathways. In particular, the insulin signaling cascade, a potent regulator of cellular metabolism and energy homeostasis, seems to be implicated in the progression of diabetic and non-diabetic kidney disease...
April 17, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28413862/a-simple-strategy-for-culturing-morphologically-conserved-rat-hypothalamic-tanycytes
#10
Pablo Nicolás De Francesco, Daniel Castrogiovanni, Maia Uriarte, Victoria Frassa, Francina Agosti, Jesica Raingo, Mario Perello
Hypothalamic tanycytes are specialized bipolar ependymal cells that line the floor of the third ventricle. Given their strategic location, tanycytes are believed to play several key functions including being a selective barrier and controlling the amount of hypothalamic-derived factors reaching the anterior pituitary. The in vitro culture of these cells has proved to be difficult. Here, we report an improved method for the generation of primary cultures of rat hypothalamic tanycytes. Ependymal cultures were derived from tissue dissected out of the median eminence region of 10-day-old rats and cultured in a chemically defined medium containing DMEM:F12, serum albumin, insulin, transferrin and the antibiotic gentamycin...
April 17, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28413861/preconditioning-with-melatonin-improves-therapeutic-outcomes-of-bone-marrow-derived-mesenchymal-stem-cells-in-targeting-liver-fibrosis-induced-by-ccl4
#11
Keywan Mortezaee, Neda Khanlarkhani, Fatemeh Sabbaghziarani, Saeid Nekoonam, Jamal Majidpoor, Amir Hosseini, Parichehr Pasbakhsh, Iraj Ragerdi Kashani, Adib Zendedel
Preconditioning of mesenchymal stem cells (MSCs) with melatonin (MT) has shown promising results in animal models of myocardial infarction, renal ischemia and cerebral ischemia. Here, we use this strategy in the liver fibrosis induced by CCl4. There were five groups: normal, CCl4, CCl4 + vehicle, CCl4 + BMMSCs and CCl4 + MT-bone marrow (BM)-derived MSCs (MT-BMMSCs). CCl4 was injected twice weekly for 8 weeks and treatment either with cells or vehicle was performed at the beginning of week 5 with a single dose...
April 17, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28413860/distribution-and-characterisation-of-cck-containing-enteroendocrine-cells-of-the-mouse-small-and-large-intestine
#12
Josiane Fakhry, Joyce Wang, Patricia Martins, Linda J Fothergill, Billie Hunne, Pierre Prieur, Arthur Shulkes, Jens F Rehfeld, Brid Callaghan, John B Furness
There is general consensus that enteroendocrine cells, EEC, containing the enteric hormone cholecystokinin (CCK) are confined to the small intestine and predominate in the duodenum and jejunum. Contrary to this, EEC that express the gene for CCK have been isolated from the large intestine of the mouse and there is evidence for EEC that contain CCK-like immunoreactivity in the mouse colon. However, the human and rat colons do not contain CCK cells. In the current study, we use immunohistochemistry to investigate CCK peptide presence in endocrine cells, PCR to identify cck transcripts and chromatography to identify CCK peptide forms in the mouse small and large intestine...
April 17, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28413859/meniscus-articular-cartilage-and-nucleus-pulposus-a-comparative-review-of-cartilage-like-tissues-in-anatomy-development-and-function
#13
REVIEW
Song Chen, Peiliang Fu, Haishan Wu, Ming Pei
The degradation of cartilage in the human body is impacted by aging, disease, genetic predisposition and continued insults resulting from daily activity. The burden of cartilage defects (osteoarthritis, rheumatoid arthritis, intervertebral disc damage, knee replacement surgeries, etc.) is daunting in light of substantial economic and social stresses. This review strives to broaden the scope of regenerative medicine and tissue engineering approaches used for cartilage repair by comparing and contrasting the anatomical and functional nature of the meniscus, articular cartilage (AC) and nucleus pulposus (NP)...
April 17, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28401309/pathomechanisms-of-renal-fabry-disease
#14
Øystein Eikrem, Rannveig Skrunes, Camilla Tøndel, Sabine Leh, Gunnar Houge, Einar Svarstad, Hans-Peter Marti
No abstract text is available yet for this article.
April 12, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28401308/using-drosophila-nephrocytes-in-genetic-kidney-disease
#15
Martin Helmstädter, Matias Simons
Renal diseases are a growing health burden, and innovative models to study their pathomechanisms are greatly needed. Here, we highlight how the fruit fly Drosophila melanogaster can be used to model kidney diseases. We focus on the nephrocyte that has recently been shown to exhibit podocyte and proximal tubular cell features. These cells can be manipulated with precise genetic tools to dissect filtration and reabsorption mechanisms. Thus, they represent a novel and easy-to-use alternative in experimental nephrology...
April 12, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28401307/immunohistochemical-mapping-and-transcript-expression-of-the-gpa2-gpb5-receptor-in-tissues-of-the-adult-mosquito-aedes-aegypti
#16
David A Rocco, Doo Hyun Kim, Jean-Paul V Paluzzi
GPA2/GPB5 is a glycoprotein hormone found in most bilateral metazoans including the mosquito, Aedes aegypti. To elucidate physiological roles and functions of GPA2/GPB5, we aim to identify prospective target tissues by examining the tissue- and sex-specific expression profile of its receptor, the leucine-rich repeat-containing G protein-coupled receptor 1 (LGR1) in the adult mosquito. Western analyses using a heterologous system with CHO-K1 cells, transiently expressing A. aegypti LGR1, yielded a 112-kDa monomeric band and high-molecular weight multimers, which associated with membrane-protein fractions...
April 11, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28401306/toolbox-in-a-tadpole-xenopus-for-kidney-research
#17
REVIEW
Maike Getwan, Soeren S Lienkamp
Xenopus is a versatile model organism increasingly used to study organogenesis and genetic diseases. The rapid embryonic development, targeted injections, loss- and gain-of-function experiments and an increasing supply of tools for functional in vivo analysis are unique advantages of the Xenopus system. Here, we review the vast array of methods available that have facilitated its transition into a translational model. We will focus primarily on how these methods have been employed in the study of kidney development, renal function and kidney disease...
April 11, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28389816/brain-architecture-of-the-pacific-white-shrimp-penaeus-vannamei-boone-1931-malacostraca-dendrobranchiata-correspondence-of-brain-structure-and-sensory-input
#18
Rebecca Meth, Christin Wittfoth, Steffen Harzsch
Penaeus vannamei (Dendrobranchiata, Decapoda) is best known as the "Pacific White Shrimp" and is currently the most important crustacean in commercial aquaculture worldwide. Although the neuroanatomy of crustaceans has been well examined in representatives of reptant decapods ("ground-dwelling decapods"), there are only a few studies focusing on shrimps and prawns. In order to obtain insights into the architecture of the brain of P. vannamei, we use neuroanatomical methods including X-ray micro-computed tomography, 3D reconstruction and immunohistochemical staining combined with confocal laser-scanning microscopy and serial sectioning...
April 7, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28374150/transplantation-of-bone-marrow-derived-mscs-improves-renal-function-and-na-k-atpase-activity-in-rats-with-renovascular-hypertension
#19
Rafaelle Lira, Mariana Oliveira, Marcela Martins, Caroline Silva, Simone Carvalho, Ana Carolina Stumbo, Erika Cortez, Karine Verdoorn, Marcelo Einicker-Lamas, Alessandra Thole, Laís de Carvalho
Renovascular hypertension (RVH) is a progressive disease, leading to chronic kidney disease when untreated and no specific treatment is available. Therefore, development of new therapeutic modalities is imperative. RVH is triggered by renal artery stenosis and subsequent renin-angiotensin-aldosterone system activation; it can be experimentally induced by the 2 Kidneys-1 Clip (2K1C) model. This study investigates the therapeutic potential of renal subcapsular mesenchymal stem cell (MSC) infusion in 2K1C rats...
April 3, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28374149/multiple-origins-of-embryonic-and-tadpole-myeloid-cells-in-xenopus-laevis
#20
Yasutaka Imai, Keisuke Ishida, Maya Nemoto, Keisuke Nakata, Takashi Kato, Mitsugu Maéno
Rabbit anti-serum against a myeloid-cell-specific peroxidase (Mpo) of Xenopus laevis was generated to identify myeloid cells in adult and larval animals. Smears of blood samples from adult hematopoietic organs were co-stained with Mpo and with XL-2, a mouse monoclonal antibody against a leukocyte common antigen. Lymphocytes found in the thymus and spleen were XL-2(+)Mpo(-) and granulocytes found in peripheral blood cells and the spleen were XL-2(+)Mpo(+), indicating that double-staining with these two antibodies allowed classification of the leukocyte lineages...
April 3, 2017: Cell and Tissue Research
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