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https://www.readbyqxmd.com/read/28323211/metabolic-pathway-of-4-pyridone-3-carboxamide-1%C3%AE-d-ribonucleoside-and-its-effects-on-cellular-energetics
#1
Iwona Pelikant-Malecka, Ewa Kaniewska-Bednarczuk, Sylwia Szrok, Alicja Sielicka, Maciej Śledziński, Czesława Orlewska, Ryszard T Smolenski, Ewa M Słomińska
4-Pirydone-3-carboxamide-1β-D-ribonucleoside (4PYR) is an endogenous nucleoside that could be converted to triphosphates, diphosphates, monophosphates and an analogue of NAD - 4PYRAD. Elevated level of these compounds were observed in chronic renal failure, cancer and active HIV infection. However, little is known about the effect on cell functionality and the metabolic pathways. This study tested effects of 4PYR in different cell types on nucleotide and energy metabolism and clarified enzymes that are involved in conversions of 4PYR...
March 17, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28322169/potential-therapeutic-strategies-of-regenerative-medicine-for-renal-failure
#2
Monica Maribel Mata-Miranda, Raul Jacobo Delgado-Macuil, Marlon Rojas-Lopez, Ricardo Martinez-Flores, Gustavo Jesus Vazquez-Zapien
Kidney diseases are a public health problem worldwide; the mortality rate is between 50 and 80%. Available therapies include replacement function by dialysis or transplant, associated with a high morbidity and mortality; kidney transplantation is limited by the shortage of donor organs, immune rejection and lifelong treatment with immunosuppressive. Likewise, none of these treatments compensates all kidney functions. There is a great concern in developing more effective therapies with the ability to replace the wide range of renal functions, so that, new researches on developing therapeutic strategies have focused on regenerative medicine, science that includes artificial creation of tissues and organs, in order to repair or replace a tissue or organ function...
March 17, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28321822/the-exciting-bench-to-bedside-journey-of-cell-therapies-for-acute-kidney-injury-and-renal-transplantation
#3
REVIEW
Sergio Dellepiane, Davide Medica, Alessandro Domenico Quercia, Vincenzo Cantaluppi
Acute kidney injury (AKI) is characterized by an increasing incidence and poor outcomes in both developed and undeveloped countries. AKI is also acquiring importance in the setting of kidney transplantation (KT): besides all the classical forms of AKI that KT patients may undergo, several transplant-specific injuries can also lead to the loss of graft function. The mechanisms of tissue damage in native and grafted kidneys share several common pathogenic elements. Since appropriate therapeutic treatments are still lacking-probably due to the disease complexity-clinicians are forced to provide only supportive care...
March 21, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28321776/colony-hanging-drop-and-methylcellulose-three-dimensional-hypoxic-growth-optimization-of-renal-cell-carcinoma-cell-lines
#4
Damian Matak, Klaudia K Brodaczewska, Monika Lipiec, Łukasz Szymanski, Cezary Szczylik, Anna M Czarnecka
Renal cell carcinoma (RCC) is the most lethal of the common urologic malignancies, comprising 3% of all human neoplasms, and the incidence of kidney cancer is rising annually. We need new approaches to target tumor cells that are resistant to current therapies and that give rise to recurrence and treatment failure. In this study, we focused on low oxygen tension and three-dimensional (3D) cell culture incorporation to develop a new RCC growth model. We used the hanging drop and colony formation methods, which are common in 3D culture, as well as a unique methylcellulose (MC) method...
March 20, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28297566/instructive-role-of-the-microenvironment-in-preventing-renal-fibrosis
#5
Kei Matsumoto, Sandhya Xavier, Jun Chen, Yujiro Kida, Mark Lipphardt, Reina Ikeda, Annie Gevertz, Mario Caviris, Antonis K Hatzopoulos, Ivo Kalajzic, James Dutton, Brian B Ratliff, Hong Zhao, Zbygniew Darzynkiewicz, Stefan Rose-John, Michael S Goligorsky
Accumulation of myofibroblasts is a hallmark of renal fibrosis. A significant proportion of myofibroblasts has been reported to originate via endothelial-mesenchymal transition. We initially hypothesized that exposing myofibroblasts to the extract of endothelial progenitor cells (EPCs) could reverse this transition. Indeed, in vitro treatment of transforming growth factor-β1 (TGF-β1)-activated fibroblasts with EPC extract prevented expression of α-smooth muscle actin (α-SMA); however, it did not enhance expression of endothelial markers...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28276451/comparison-of-human-adipose-stromal-vascular-fraction-and-adipose-derived-mesenchymal-stem-cells-for-the-attenuation-of-acute-renal-ischemia-reperfusion-injury
#6
Liuhua Zhou, Qun Song, Jiangwei Shen, Luwei Xu, Zheng Xu, Ran Wu, Yuzheng Ge, Jiageng Zhu, Jianping Wu, Quanliang Dou, Ruipeng Jia
Stem cells therapy has been suggested as a promising option for the treatment of acute kidney injury (AKI). This study was performed to compare the abilities of xenogenic transplantation of human adipose stromal vascular fraction (SVF) and adipose-derived mesenchymal stem cells (AdMSCs) to facilitate the recovery of renal function and structure in a rat model of ischemia/reperfusion (IR) induced AKI. SVF or AdMSCs were transplanted to the injured kidney through intra-parenchymal injection. Significantly improved renal function and reduced tubular injury were observed in SVF and AdMSCs groups...
March 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28267813/decellularized-scaffold-of-cryopreserved-rat-kidney-retains-its-recellularization-potential
#7
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
#8
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
https://www.readbyqxmd.com/read/28260442/nephrotic-syndrome-after-hematopoietic-stem-cell-transplant-outcomes-in-iran
#9
Fereshteh Saddadi, Ali Alidadi, Monir Hakemi, Babak Bahar
OBJECTIVES: Patients undergoing hematopoietic stem cell transplant have an elevated incidence of acute renal failure. However, the incidence of nephritic syndrome due to graft-versus-host disease is growing and is independently associated with chronic renal disease after this procedure. MATERIALS AND METHODS: We conducted a prospective study to examine the risk of chronic kidney disease in glomerulopathy patients following hematopoietic stem cell transplant with a follow-up of 10 years...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28252625/-light-chain-deposition-disease-is-a-hematologic-problem
#10
I G Rekhtina, L P Mendeleeva, L S Biryukova
AIM: To analyze clinical and laboratory data and treatment results in patients with light-chain deposition disease (LCDD). SUBJECTS AND METHODS: Nine patients with LCDD and kidney injury were examined. The diagnosis was based on the results of light and immunofluorescence microscopy of renal biopsy specimens. All the patients received bortezomib, cyclophosphamide, and dexamethasone (VCD) induction therapy. RESULTS: Six patients were diagnosed with multiple myeloma; in 3 patients LCDD was considered within monoclonal gammopathy manly involving the kidney...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28242034/mesenchymal-stem-cell-derived-extracellular-vesicles-attenuate-kidney-inflammation
#11
Alfonso Eirin, Xiang-Yang Zhu, Amrutesh S Puranik, Hui Tang, Kelly A McGurren, Andre J van Wijnen, Amir Lerman, Lilach O Lerman
Mesenchymal stem/stromal cells (MSCs) have distinct capability for renal repair, but may have safety concerns. MSC-derived extracellular vesicles emerged as a novel noncellular alternative. Using a porcine model of metabolic syndrome and renal artery stenosis we tested whether extracellular vesicles attenuate renal inflammation, and if this capacity is mediated by their cargo of the anti-inflammatory cytokine interleukin (IL) 10. Pigs with metabolic syndrome were studied after 16 weeks of renal artery stenosis untreated or treated four weeks earlier with a single intrarenal delivery of extracellular vesicles harvested from adipose tissue-derived autologous MSCs...
February 24, 2017: Kidney International
https://www.readbyqxmd.com/read/28239758/acellular-mouse-kidney-ecm-can-be-used-as-a-three-dimensional-substrate-to-test-the-differentiation-potential-of-embryonic-stem-cell-derived-renal-progenitors
#12
Manpreet Sambi, Theresa Chow, Jennifer Whiteley, Mira Li, Shawn Chua, Vanessa Raileanu, Ian M Rogers
The development of strategies for tissue regeneration and bio-artificial organ development is based on our understanding of embryogenesis. Differentiation protocols attempt to recapitulate the signaling modalities of gastrulation and organogenesis, coupled with cell selection regimens to isolate the cells of choice. This strategy is impeded by the lack of optimal in vitro culture systems since traditional culture systems do not allow for the three-dimensional interaction between cells and the extracellular matrix...
February 27, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28203018/-high-glucose-reduced-the-repair-function-of-kidney-stem-cells-conditional-medium-to-the-hypoxia-injured-renal-tubular-epithelium-cells
#13
G Yang, Q L Cheng, C L Li, Y L Jia, W Yue, X T Pei, Y Liu, J H Zhao, J DU, Q G Ao
OBJECTIVE: To evaluate the impacts of high glucose on the repair function of kidney stem cells (KSC) conditional medium to the hypoxia-injured renal tubular epithelium cells (RTEC). METHODS: KSC were isolated from the renal papilla in 4-week-Sprague-Dawley rats. The KSC were pretreated in media with high glucose (30 mmol/L) or with normal glucose (5.6 mmol/L), respectively. The supernatants of the pre-treated KSC were collected as the conditional media. The hypoxia/reoxygenation (H/R) model of rat RTEC was established using the NRK-52E cell line...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28194187/effect-of-hypoxia-on-the-differentiation-and-the-self-renewal-of-metanephrogenic-mesenchymal-stem-cells
#14
Shaopeng Liu, Nana Song, Jianqiang He, Xiaofang Yu, Jia Guo, Xiaoyan Jiao, Xiaoqiang Ding, Jie Teng
Hypoxia is an important and influential factor in development. The embryonic kidney is exposed to a hypoxic environment throughout its development. The Wnt/β-catenin pathway plays vital roles in the differentiation and self-renewal of metanephrogenic mesenchymal stem cells (MMSCs) from which the kidney is derived. Thus, we hypothesized that hypoxia can regulate the differentiation and pluripotency of MMSCs through the Wnt/β-catenin pathway. To test this hypothesis, MMSCs from rats at embryonic day 18.5 were cultured in normoxic (21% O2) and hypoxic (1% O2) conditions...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28191781/direct-isolation-and-characterization-of-human-nephron-progenitors
#15
Stefano Da Sacco, Matthew E Thornton, Astgik Petrosyan, Maria Lavarreda-Pearce, Sargis Sedrakyan, Brendan H Grubbs, Roger E De Filippo, Laura Perin
Mature nephrons originate from a small population of uninduced nephrogenic progenitor cells (NPs) within the cap mesenchyme. These cells are characterized by the coexpression of SIX2 and CITED1. Many studies on mouse models as well as on human pluripotent stem cells have advanced our knowledge of NPs, but very little is known about this population in humans, since it is exhausted before birth and strategies for its direct isolation are still limited. Here we report an efficient protocol for direct isolation of human NPs without genetic manipulation or stepwise induction procedures...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28173878/the-effects-of-glomerular-and-tubular-renal-progenitors-and-derived-extracellular-vesicles-on-recovery-from-acute-kidney-injury
#16
Andrea Ranghino, Stefania Bruno, Benedetta Bussolati, Aldo Moggio, Veronica Dimuccio, Marta Tapparo, Luigi Biancone, Paolo Gontero, Bruno Frea, Giovanni Camussi
BACKGROUND: Mesenchymal stromal cells (MSCs) and renal stem/progenitors improve the recovery of acute kidney injury (AKI) mainly through the release of paracrine mediators including the extracellular vesicles (EVs). Several studies have reported the existence of a resident population of MSCs within the glomeruli (Gl-MSCs). However, their contribution towards kidney repair still remains to be elucidated. The aim of the present study was to evaluate whether Gl-MSCs and Gl-MSC-EVs promote the recovery of AKI induced by ischemia-reperfusion injury (IRI) in SCID mice...
February 7, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28164637/clinical-implications-of-plasma-n-acetyl-seryl-aspartyl-lysyl-proline-level-in-stable-kidney-transplant-recipients
#17
Yosuke Suzuki, Fumihiko Katagiri, Fuminori Sato, Kanako Fujioka, Yukie Sato, Takashi Fujioka, Yuhki Sato, Hiromitsu Mimata, Hiroki Itoh
BACKGROUND: N-acetyl-seryl-aspartyl-lysyl-proline (AcSDKP) is a natural inhibitor of pluripotent hematopoietic stem cell proliferation and is normally found in human plasma. Because AcSDKP is partially eliminated in urine, accumulation of AcSDKP due to chronic renal failure may cause anemia. However, the status of plasma AcSDKP level in stable kidney transplant recipients is unknown although some recipients develop anemia after kidney transplantation. In this study, we investigated the relationship between plasma AcSDKP-like immunoreactive substance (IS) level and clinical characteristics associated with renal anemia in stable kidney transplant recipients...
July 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28135776/long-term-renal-outcome-after-allogeneic-haemopoietic-stem-cell-transplant-a-comprehensive-analysis-of-risk-factors-in-an-asian-patient-population
#18
Wei Zhou, Rehena Sultana, Colin Diong, Yeow-Tee Goh, Sathish Gopalakrishnan, Aloysius Ho, William Hwang, Liang-Piu Koh, Mickey Koh, Yvonne Loh, Patrick Tan, Yeh-Ching Linn
Allogeneic haemopoietic stem cell transplantation (allo-HSCT) poses a significant challenge to renal function due to multiple drug- and complication-related renal toxicity. In this single center series of 216 adult Asian patients with a long and complete follow up, 41 developed chronic kidney disease (CKD) giving a cumulative incidence of 19.0% at 25 years (median follow up duration 7.84 years, range 2.0 - 27.7 years), but only 2 of the 41 patients reaching stage 4 CKD and another 2 requiring dialysis. In contrast, acute kidney injury occurred in most patients, where glomerular filtration rate (GFR) suffered a mean fall of 50ml/min/1...
January 30, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28129785/human-umbilical-cord-derived-mesenchymal-stromal-cells-protect-against-premature-renal-senescence-resulting-from-oxidative-stress-in-rats-with-acute-kidney-injury
#19
Camila Eleuterio Rodrigues, José Manuel Condor Capcha, Ana Carolina de Bragança, Talita Rojas Sanches, Priscila Queiroz Gouveia, Patrícia Aparecida Ferreira de Oliveira, Denise Maria Avancini Costa Malheiros, Rildo Aparecido Volpini, Mirela Aparecida Rodrigues Santinho, Bárbara Amélia Aparecida Santana, Rodrigo do Tocantins Calado, Irene de Lourdes Noronha, Lúcia Andrade
BACKGROUND: Mesenchymal stromal cells (MSCs) represent an option for the treatment of acute kidney injury (AKI). It is known that young stem cells are better than are aged stem cells at reducing the incidence of the senescent phenotype in the kidneys. The objective of this study was to determine whether AKI leads to premature, stress-induced senescence, as well as whether human umbilical cord-derived MSCs (huMSCs) can prevent ischaemia/reperfusion injury (IRI)-induced renal senescence in rats...
January 28, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28117405/biological-membrane-packed-mesenchymal-stem-cells-treat-acute-kidney-disease-by-ameliorating-mitochondrial-related-apoptosis
#20
Xiaodong Geng, Quan Hong, Weiwei Wang, Wei Zheng, Ou Li, Guangyan Cai, Xiangmei Chen, Di Wu
The mortality of rhabdomyolysis-induced AKI remains high because no effective therapy exists. We investigated a new therapeutic method using MSCs. The aim of this study was to investigate the therapeutic potential and anti-apoptotic mechanisms of action of MSCs in the treatment of AKI induced by glycerol in vivo and in vitro. We used Duragen as a biological membrane to pack MSCs on the glycerol-injured renal tissue in vivo. The anti-apoptotic mechanism was investigated. In vitro, HK-2 cells were incubated with ferrous myoglobin and MSCs-conditioned medium, followed by cell proliferation and apoptosis assays...
January 24, 2017: Scientific Reports
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