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https://www.readbyqxmd.com/read/28526628/heparin-based-hydrogels-induce-human-renal-tubulogenesis-in-vitro
#1
Heather M Weber, Mikhail V Tsurkan, Valentina Magno, Uwe Freudenberg, Carsten Werner
Dialysis or kidney transplantation is the only therapeutic option for end stage renal disease. Accordingly, there is a large unmet clinical need for new causative therapeutic treatments. Obtaining robust models that mimic the complex nature of the human kidney is a critical step in the development of new therapeutic strategies. Here we establish a synthetic in vitro human renal tubulogenesis model based on a tunable glycosaminoglycan-hydrogel platform. In this system, renal tubulogenesis can be modulated by the adjustment of hydrogel mechanics and degradability, growth factor signaling, and the presence of insoluble adhesion cues, potentially providing new insights for regenerative therapy...
May 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28513838/the-emerging-role-of-npnt-in-tissue-injury-repair-and-bone-homeostasis
#2
REVIEW
Youqiang Sun, Vincent Kuek, Heng Qiu, Jennifer Tickner, Leilei Chen, Haibin Wang, Wei He, Jiake Xu
Nephronectin (NPNT), a highly conserved extracellular matrix protein, plays an important role in regulating cell adhesion, differentiation, spreading and survival. NPNT protein belongs to epidermal growth factor (EGF)-like superfamily and exhibits several common structural determinants; including EGF-like repeat domains, MAM domain (Meprin, A5 Protein, and Receptor Protein-Tyrosine Phosphatase µ), RGD motif (Arg-Gly-Asp) and a coiled-coil domain. It regulates integrins-mediated signaling pathways via the interaction of its RGD motif with integrin α8β1...
May 17, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28498963/hypertension-in-kidney-transplantation-is-associated-with-an-early-renal-nerve-sprouting
#3
Alessandro Mauriello, Valentina Rovella, Filippo Borri, Lucia Anemona, Elena Giannini, Erica Giacobbi, Andrea Saggini, Giampiero Palmieri, Alessandro Anselmo, Pierluigi Bove, Gerry Melino, Guardini Valentina, Manfredi Tesauro, D'Urso Gabriele, Nicola Di Daniele
Background.: Normalization of arterial pressure occurs in just a few patients with hypertensive chronic kidney disease undergoing kidney transplantation. Hypertension in kidney transplant recipients may be related to multiple factors. We aimed to assess whether hypertension in kidney-transplanted patients may be linked to reinnervation of renal arteries of the transplanted kidney. Methods.: We investigated renal arteries innervation from native and transplanted kidneys in three patients 5 months, 2 years and 11 years after transplantation, respectively...
May 12, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28471327/renal-regenerative-potential-of-different-extra-cellular-vesicle-populations-derived-from-bone-marrow-mesenchymal-stromal-cells
#4
Stefania Bruno, Marta Tapparo, Federica Collino, Giulia Chiabotto, Maria Chiara Deregibus, Rafael Soares Lindoso, Francesco Neri, Sharad Kholia, Sara Giunti, Sicheng Wen, Peter Quesenberry, Giovanni Camussi
Extra-cellular vesicles (EVs) derived from human bone marrow mesenchymal stromal cells (MSCs) promote the regeneration of kidneys in different animal models of AKI in a manner comparable to the cells of origin. However, due to the heterogeneity observed in the EVs isolated from MSC, it is unclear which population is responsible for the pro-regenerative effects. We therefore evaluated the effect of various EV-populations separated by differential ultracentrifugation (10K population enriched with microvesicles and 100K population enriched with exosomes) on AKI recovery...
May 4, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28469775/melatonin-promoted-renal-regeneration-in-folic-acid-induced-acute-kidney-injury-via-inhibiting-nucleocytoplasmic-translocation-of-hmgb1-in-tubular-epithelial-cells
#5
Fengming Zhu, Octavia Ls Chong Lee Shin, Huzi Xu, Zhi Zhao, Guangchang Pei, Zhizhi Hu, Juan Yang, Yanchao Guo, Jingyi Mou, Jie Sun, Han Zhu, Yuxi Wang, Meng Wang, Qian Yang, Wenhui Liao, Gang Xu, Rui Zeng, Ying Yao
Melatonin (N-acetyl-5-methoxytryptamine), a circadian-regulating hormone, has been reported to exert a protective role during acute kidney injury (AKI) induced by renal ischemia-reperfusion injury (I/R). High-mobility group box 1 (HMGB1) is a novel member of the damage-associated molecular pattern (DAMP) family, and has been verified to be an inflammatory cytokine mediating AKI induced by I/R and cisplatin. However, the effect of melatonin on HMGB1, as well as the relationship of these two with folic acid induced AKI are elusive...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28466106/augmenter-of-liver-regeneration-regulates-autophagy-in-renal-ischemia-reperfusion-injury-via-the-ampk-mtor-pathway
#6
Tao Pu, Xiao-Hui Liao, Hang Sun, Hui Guo, Xiao Jiang, Jun-Bo Peng, Ling Zhang, Qi Liu
Autophagy may have protective effects in renal ischemia-reperfusion (I/R) injury, although the underlying mechanisms remain unclear. Augmenter of liver regeneration (ALR), a widely distributed multifunctional protein that is originally identified as a hepatic growth factor, may participate in the process of autophagy. To investigate the role of ALR in autophagy, ALR expression is knocked-down in human kidney 2 (HK-2) cells with short hairpin RNA lentivirals. Then, the level of autophagy is measured in the shRNA/ALR group and the shRNA/control group in an in vitro model of ischemia-reperfusion (I/R)...
May 2, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28454301/immunohistochemical-profile-of-ing3-protein-in-normal-and-cancerous-tissues
#7
Wen-Feng Gou, Xue-Feng Yang, Dao-Fu Shen, Shuang Zhao, Hong-Zhi Sun, Jun-Sheng Luo, Hua-Chuan Zheng
The inhibitor of growth family, member 3 (ING3) protein may be capable of blocking the cell cycle via activating p53-transactivated promoters of p21 and Bcl2-associated X protein, and may induce apoptosis via a Fas/caspase-8-dependent signaling pathway. In the present study, immunohistochemistry was performed in order to characterize the expression profile of ING3 protein in tissue microarrays containing mouse and human normal tissue, human hepatocellular (n=62), renal clear cell (n=62), pancreatic (n=62), esophageal squamous cell (n=45), cervical squamous cell (n=31), breast (n=144), gastric (n=196), colorectal (n=96), ovarian (n=208), endometrial (n=96) and lung carcinoma (n=192)...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28418911/elevated-serum-level-of-pancreatic-stone-protein-regenerating-protein-psp-reg-is-observed-in-diabetic-kidney-disease
#8
Ling Li, Dongyu Jia, Rolf Graf, Jiayue Yang
Diabetic kidney disease (DKD) is a major complication of diabetes, and serves as an important cause of end-stage renal disease (ESRD). The role of chronic inflammation in DKD is becoming widely accepted. Pancreatic stone protein/regenerating protein (PSP/reg) is a secretory protein, which is elevated in blood during infected conditions and organ failure. The aim of this study was to investigate the relationship between serum PSP/reg and DKD in patients with type 2 diabetes (T2DM). A total of 120 subjects which includes newly diagnosed T2DM patients, diabetes patients without DKD, DKD patients, as well as healthy controls were enrolled in this study...
March 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28416198/engineering-human-renal-epithelial-cells-for-transplantation-in-regenerative-medicine
#9
Vita Manzoli, David C Colter, Sridevi Dhanaraj, Alessia Fornoni, Camillo Ricordi, Antonello Pileggi, Alice A Tomei
Cellular transplantation may treat several human diseases by replacing damaged cells and/or providing a local source of trophic factors promoting regeneration. We utilized human renal epithelial cells (hRECs) isolated from cadaveric donors as a cell model. For efficacious implementation of hRECs for treatment of kidney diseases, we evaluated a novel encapsulation strategy for immunoisolation of hRECs and lentiviral transduction of the Green Fluorescent Protein (GFP) as model gene for genetic engineering of hRECs to secrete desired trophic factors...
April 13, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28411024/epcam-controls-morphogenetic-programs-during-zebrafish-pronephros-development
#10
Sebastian Kuechlin, Maximilian Schoels, Krasimir Slanchev, Silke Lassmann, Gerd Walz, Toma A Yakulov
Epithelial cell adhesion molecule EpCAM is a transmembrane glycoprotein that is dynamically expressed in human and murine renal epithelia during development. The levels of EpCAM in the renal epithelium are upregulated both during regeneration after ischemia/reperfusion injury and in renal-derived carcinomas. The role of EpCAM in early kidney development, however, has remained unclear. The zebrafish pronephros shows a similar segmentation pattern to the mammalian metanephric nephron, and has recently emerged as a tractable model to study the regulatory programs governing early nephrogenesis...
April 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28409343/use-of-xenopus-frogs-to-study-renal-development-repair
#11
Shoshoni T Droz, Kelly A McLaughlin
The Xenopus genus includes several members of aquatic frogs native to Africa but is perhaps best known for the species Xenopus laevis and Xenopus tropicalis. These species were popularized as model organisms from as early as the 1800s and have been instrumental in expanding several biological fields including cell biology, environmental toxicology, regenerative biology, and developmental biology. In fact, much of what we know about the formation and maturation of the vertebrate renal system has been acquired by examining the intricate genetic and morphological patterns that epitomize nephrogenesis in Xenopus...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/28375556/human-kidney-derived-cells-ameliorate-acute-kidney-injury-without-engrafting-into-renal-tissue
#12
Ilaria Santeramo, Zeneida Herrera Perez, Ana Illera, Arthur Taylor, Simon Kenny, Patricia Murray, Bettina Wilm, Norbert Gretz
Previous studies have suggested that CD133(+) cells isolated from human kidney biopsies have the potential to ameliorate injury following intravenous (IV) administration in rodent models of kidney disease by integrating into damaged renal tissue and generating specialized renal cells. However, whether renal engraftment of CD133(+) cells is a prerequisite for ameliorating injury has not yet been unequivocally resolved. Here, we have established a cisplatin-induced nephropathy model in immunodeficient rats to assess the efficacy of CD133(+) human kidney cells in restoring renal health, and to determine the fate of these cells after systemic administration...
May 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28351772/28-day-repeated-dose-response-study-of-diglycolic-acid-renal-and-hepatic-effects
#13
Robert L Sprando, Miriam E Mossoba, Thomas Black, Zachary Keltner, Sanah Vohra, Nicholas Olejnik, Howard Toomer, Cynthia Stine, Eric Evans, Jessica L Sprando, Martine Ferguson
The acute oral toxicity of diglycolic acid (DGA) was evaluated. Groups of female rats (n = 8 rats/group) received 28 consecutive daily single doses of 0.3, 1.0, 3.0, 10.0, 30.0, 100.0 or 300.0 mg DGA/kg body weight by gastric intubation. One group of animals served as vehicle control. Tissues and blood serum were collected at necropsy on day 29. Select organs were weighed and fixed in formalin for histopathological analysis. Animals from the 300 mg/kg bw dose group were removed from the study after 5 consecutive days of treatment as a consequence of adverse treatment related effects...
March 25, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28331060/proximal-tubule-glutamine-synthetase-expression-is-necessary-for-the-normal-response-to-dietary-protein-restriction
#14
Hyun-Wook Lee, Gunars Osis, Mary E Handlogten, Jill W Verlander, I David Weiner
Dietary protein restriction has multiple benefits in kidney disease. Because protein intake is a major determinant of endogenous acid production, it is important that net acid excretion change in parallel during changes in dietary protein intake. Dietary protein restriction decreases endogenous acid production and ¬decreases urinary ammonia excretion, a major component of net acid excretion. Glutamine synthetase (GS) catalyzes the reaction of NH4+ and glutamate, which regenerates the essential amino acid glutamine and decreases net ammonia generation...
March 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28315934/gas1-expression-in-parietal-cells-of-bowman-s-capsule-in-experimental-diabetic-nephropathy
#15
Brenda I Luna-Antonio, Rafael Rodriguez-Muñoz, Carmen Namorado-Tonix, Paula Vergara, Jose Segovia, Jose L Reyes
Gas1 (Growth Arrest-Specific 1) is a pleiotropic protein with novel functions including anti-proliferative and proapoptotic activities. In the kidney, the expression of Gas1 has been described in mesangial cells. In this study, we described that renal parietal cells of Bowman's capsule (BC) and the distal nephron cells also express Gas1. The role of Gas1 in the kidney is not yet known. There is a subpopulation of progenitor cells in Bowman's capsule with self-renewal properties which can eventually differentiate into podocytes as a possible mechanism of regeneration in the early stages of diabetic nephropathy...
March 18, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28291603/proliferative-kidney-disease-in-rainbow-trout-oncorhynchus-mykiss-under-intensive-breeding-conditions-pathogenesis-and-haematological-and-immune-parameters
#16
Miroslava Palikova, Ivana Papezikova, Zdenka Markova, Stanislav Navratil, Jan Mares, Lukas Mares, Libor Vojtek, Pavel Hyrsl, Eva Jelinkova, Heike Schmidt-Posthaus
Proliferative kidney disease (PKD) is an endoparasitic disease of salmonid fish caused by Tetracapsuloides bryosalmonae (Myxozoa: Malacosporea). This study presents a comprehensive view on PKD development in rainbow trout (Oncorhynchus mykiss) reared at an intensive fish breeding facility, with focus on mortality, pathology/histopathology, haematological findings and immune functions. Diseased and reference fish were sampled monthly and time course of natural infection was followed up from the onset of clinical signs (September 2014) to full recovery (January 2015)...
March 6, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28286758/role-of-vitamin-d-in-uremic-vascular-calcification
#17
REVIEW
Yi-Chou Hou, Wen-Chih Liu, Cai-Mei Zheng, Jing-Quan Zheng, Tzung-Hai Yen, Kuo-Cheng Lu
The risk of cardiovascular death is 10 times higher in patients with CKD (chronic kidney disease) than in those without CKD. Vascular calcification, common in patients with CKD, is a predictor of cardiovascular mortality. Vitamin D deficiency, another complication of CKD, is associated with vascular calcification in patients with CKD. GFR decline, proteinuria, tubulointerstitial injury, and the therapeutic dose of active form vitamin D aggravate vitamin D deficiency and reduce its pleiotropic effect on the cardiovascular system...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28285099/mir-1247-blocks-sox9-mediated-regeneration-in-alcohol-and-fibrosis-associated-acute-kidney-injury-in-mice
#18
Kostiantyn Dreval, Aline de Conti, Shinji Furuya, Frederick A Beland, Ivan Rusyn, Igor P Pogribny
Excessive alcohol consumption has a significant impact on human health and is a major public health problem worldwide. One of the consequences of long-term excessive alcohol consumption is cellular injury in almost all organs and tissues, with acute kidney injury (AKI) being one of the most common pathological manifestations. In the present study, using a mouse model of alcoholic liver fibrosis-associated AKI induced by a combined treatment with carbon tetrachloride (CCl4) and ethanol and resembling pathological features of AKI in human alcoholic liver fibrosis, we demonstrate alterations in histone modifications in the kidneys and, importantly, in the promoter region of the over-expressed SRY (sex determining region Y)-box 9 (Sox9) gene...
March 8, 2017: Toxicology
https://www.readbyqxmd.com/read/28267813/decellularized-scaffold-of-cryopreserved-rat-kidney-retains-its-recellularization-potential
#19
Baldeep Chani, Veena Puri, Ranbir C Sobti, Vivekanand Jha, Sanjeev Puri
The multi-cellular nature of renal tissue makes it the most challenging organ for regeneration. Therefore, till date whole organ transplantations remain the definitive treatment for the end stage renal disease (ESRD). The shortage of available organs for the transplantation has, thus, remained a major concern as well as an unsolved problem. In this regard generation of whole organ scaffold through decellularization followed by regeneration of the whole organ by recellularization is being viewed as a potential alternative for generating functional tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28266553/experimental-evaluation-of-kidney-regeneration-by-organ-scaffold-recellularization
#20
Andrea Remuzzi, Marina Figliuzzi, Barbara Bonandrini, Sara Silvani, Nadia Azzollini, Roberta Nossa, Ariela Benigni, Giuseppe Remuzzi
The rising number of patients needing renal replacement therapy, alongside the significant clinical and economic limitations of current therapies, creates an imperative need for new strategies to treat kidney diseases. Kidney bioengineering through the production of acellular scaffolds and recellularization with stem cells is one potential strategy. While protocols for obtaining organ scaffolds have been developed successfully, scaffold recellularization is more challenging. We evaluated the potential of in vivo and in vitro kidney scaffold recellularization procedures...
March 7, 2017: Scientific Reports
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