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https://www.readbyqxmd.com/read/29237753/troy-tnfrsf19-marks-epithelial-progenitor-cells-during-mouse-kidney-development-that-continue-to-contribute-to-turnover-in-adult-kidney
#1
Frans Schutgens, Maarten B Rookmaaker, Francis Blokzijl, Ruben van Boxtel, Robert Vries, Edwin Cuppen, Marianne C Verhaar, Hans Clevers
During kidney development, progressively committed progenitor cells give rise to the distinct segments of the nephron, the functional unit of the kidney. Similar segment-committed progenitor cells are thought to be involved in the homeostasis of adult kidney. However, markers for most segment-committed progenitor cells remain to be identified. Here, we evaluate Troy/TNFRSF19 as a segment-committed nephron progenitor cell marker. Troy is expressed in the ureteric bud during embryonic development. During postnatal nephrogenesis, Troy+ cells are present in the cortex and papilla and display an immature tubular phenotype...
December 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29237235/efficacy-and-safety-of-everolimus-with-reduced-tacrolimus-in-living-donor-liver-transplant-recipients-12-month-results-of-a-randomized-multicenter-study
#2
Long-Bin Jeng, Sung Gyu Lee, Arvinder Singh Soin, Wei-Chen Lee, Kyung-Suk Suh, Dong Jin Joo, Shinji Uemoto, Jaewon Joh, Tomoharu Yoshizumi, Horng-Ren Yang, Gi-Won Song, Patricia Lopez, Jossy Kochuparampil, Carole Sips, Shuhei Kaneko, Gary Levy
In a multicenter, open-label, study, 284 living-donor liver transplant patients were randomized at 30±5 days post-transplant to start everolimus+reduced tacrolimus (EVR+rTAC) or continue standard tacrolimus (TAC Control). EVR+rTAC was non-inferior to TAC Control for the primary efficacy endpoint of treated BPAR, graft loss or death at 12 months post-transplant: difference -0.7% [90%CI -5.2%, 3.7%]; p<0.001 for non-inferiority. tBPAR occurred in 2.2% and 3.6% of patients, respectively. The key secondary endpoint, change in estimated GFR from randomization to month 12, achieved non-inferiority (p<0...
December 13, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29224095/sex-differences-in-muscle-wasting
#3
Lindsey J Anderson, Haiming Liu, Jose M Garcia
With aging and other muscle wasting diseases, men and women undergo similar pathological changes in skeletal muscle: increased inflammation, enhanced oxidative stress, mitochondrial dysfunction, satellite cell senescence, elevated apoptosis and proteasome activity, and suppressed protein synthesis and myocyte regeneration. Decreased food intake and physical activity also indirectly contribute to muscle wasting. Sex hormones also play important roles in maintaining skeletal muscle homeostasis. Testosterone is a potent anabolic factor promoting muscle protein synthesis and muscular regeneration...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29221627/alkaline-diet-and-metabolic-acidosis-practical-approaches-to-the-nutritional-management-of-chronic-kidney-disease
#4
Larissa Rodrigues Neto Angéloco, Gabriela Cristina Arces de Souza, Elen Almeida Romão, Paula Garcia Chiarello
The kidneys play an extremely important role in maintaining the body acid-base balance by excreting nonvolatile acids and regenerating and reabsorbing bicarbonate in the kidney tubules. As the individual loses their kidney function, renal excretion of nonvolatile acid produced by metabolism of the diet is impaired, resulting in low-grade metabolic acidosis. With this in mind, it is relevant to better understand the dietary aspects related to the acid-base balance in chronic kidney disease metabolic acidosis and try to provide possible strategies for the nutritional management of these cases...
December 5, 2017: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/29198839/sox9-activation-is-involved-in-tubule-repair-after-unilateral-partial-nephrectomy
#5
Qiwang Ma, Yujia Wang, Wei Zuo
AIMS: Tubule repair has been noticed after kidney tissue damage, however the cellular mechanism behind remains unclear. Here we successfully constructed a mouse unilateral partial nephrectomy model mimicking renal carcinoma surgery, and further investigated whether this procedure triggered regenerative action. MAIN METHODS: We used the unilateral partial nephrectomy model to study kidney repair. Kidney function after nephrectomy was measured using creatinine and urea nitrogen assay kit...
November 30, 2017: Life Sciences
https://www.readbyqxmd.com/read/29187247/improvement-of-renal-function-after-human-umbilical-cord-mesenchymal-stem-cell-treatment-on-chronic-renal-failure-and-thoracic-spinal-cord-entrapment-a-case-report
#6
Ahmad Jabir Rahyussalim, Ifran Saleh, Tri Kurniawati, Andi Praja Wira Yudha Lutfi
BACKGROUND: Chronic renal failure is an important clinical problem with significant socioeconomic impact worldwide. Thoracic spinal cord entrapment induced by a metabolic yield deposit in patients with renal failure results in intrusion of nervous tissue and consequently loss of motor and sensory function. Human umbilical cord mesenchymal stem cells are immune naïve and they are able to differentiate into other phenotypes, including the neural lineage. Over the past decade, advances in the field of regenerative medicine allowed development of cell therapies suitable for kidney repair...
November 30, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29181712/exosomes-and-microvesicles-in-normal-physiology-pathophysiology-and-renal-diseases
#7
REVIEW
Anne-Lie Ståhl, Karl Johansson, Maria Mossberg, Robin Kahn, Diana Karpman
Extracellular vesicles are cell-derived membrane particles ranging from 30 to 5,000 nm in size, including exosomes, microvesicles, and apoptotic bodies. They are released under physiological conditions, but also upon cellular activation, senescence, and apoptosis. They play an important role in intercellular communication. Their release may also maintain cellular integrity by ridding the cell of damaging substances. This review describes the biogenesis, uptake, and detection of extracellular vesicles in addition to the impact that they have on recipient cells, focusing on mechanisms important in the pathophysiology of kidney diseases, such as thrombosis, angiogenesis, tissue regeneration, immune modulation, and inflammation...
November 27, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29170512/generation-of-interspecies-limited-chimeric-nephrons-using-a-conditional-nephron-progenitor-cell-replacement-system
#8
S Yamanaka, S Tajiri, T Fujimoto, K Matsumoto, S Fukunaga, B S Kim, H J Okano, T Yokoo
Animal fetuses and embryos may have applications in the generation of human organs. Progenitor cells may be an appropriate cell source for regenerative organs because of their safety and availability. However, regenerative organs derived from exogenous lineage progenitors in developing animal fetuses have not yet been obtained. Here, we established a combination system through which donor cells could be precisely injected into the nephrogenic zone and native nephron progenitor cells (NPCs) could be eliminated in a time- and tissue-specific manner...
November 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/29160569/reconstruction-of-bladder-function-and-prevention-of-renal-deterioration-by-means-of-end-to-side-neurorrhaphy-in-rats-with-neurogenic-bladder
#9
Yun Long Li, Jian Jun Wen, Yi Bo Wen, Xiang Fei He, Jun Wei Wu, Yan Wei Li, Zhong Jiang Han, Jin Jin Feng, Shao Hua Yan, Shou Lin Li, John Pfa Heesakkers, Wan Sheng Gao, Jian Guo Wen
AIMS: To investigate the feasibility of restoring bladder function and prevention of renal deterioration by neurorrhaphy in rats with neurogenic bladder (NB). METHODS: Forty-two rats were assigned to the end-to-side nerve coaptation group (ECG, n = 16), no nerve coaptation group (NCG, n = 16), and control group (CG, n = 10). In the ECG, the left ventral root (VR) and dorsal root (DR) of L6 and S1 were transected, and the distal stump of L6VR was sutured to the lateral face of L4VR...
November 21, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29158085/generation-of-branching-ureteric-bud-tissues-from-human-pluripotent-stem-cells
#10
Shin-Ichi Mae, Makoto Ryosaka, Taro Toyoda, Kyoko Matsuse, Yoichi Oshima, Hiraku Tsujimoto, Shiori Okumura, Aya Shibasaki, Kenji Osafune
Recent progress in kidney regeneration research is noteworthy. However, the selective and robust differentiation of the ureteric bud (UB), an embryonic renal progenitor, from human pluripotent stem cells (hPSCs) remains to be established. The present study aimed to establish a robust induction method for branching UB tissue from hPSCs towards the creation of renal disease models. Here, we found that anterior intermediate mesoderm (IM) differentiates from anterior primitive streak, which allowed us to successfully develop an efficient two-dimensional differentiation method of hPSCs into Wolffian duct (WD) cells...
November 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29114949/protective-effect-of-gdnf-engineered-amniotic-fluid-derived-stem-cells-on-the-renal-ischaemia-reperfusion-injury-in-vitro
#11
Jia Wang, Fengzhen Wang, Zhuojun Wang, Shulin Li, Lu Chen, Caixia Liu, Dong Sun
OBJECTIVES: Amniotic fluid-derived stem cells (AFSCs) possessing multilineage differentiation potential are proposed as a novel and accessible source for cell-based therapy and tissue regeneration. Glial-derived neurotrophic factor (GDNF) has been hypothesized to promote the therapeutic effect of AFSCs on markedly ameliorating renal dysfunction. The aim of this study was to investigate whether AFSCs equipped with GDNF (GDNF-AFSCs) had capabilities of attenuating mouse renal tubular epithelial cells (mRTECs) apoptosis and evaluate its potential mechanisms...
November 7, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/29083099/therapeutic-application-of-extracellular-vesicles-in-kidney-disease-promises-and-challenges
#12
REVIEW
Lin-Li Lv, Wei-Jun Wu, Ye Feng, Zuo-Lin Li, Tao-Tao Tang, Bi-Cheng Liu
Extracellular vesicles (EVs) are nanosized, membrane-bound vesicles released from different cells. Recent studies have revealed that EVs may participate in renal tissue damage and regeneration through mediating inter-nephron communication. Thus, the potential use of EVs as therapeutic vector has gained considerable interest. In this review, we will discuss the basic characteristics of EVs and its role in nephron cellular communication. Then, the application of EVs as therapeutic vector based on its natural content or as carriers of drug, in acute and chronic kidney injury, was discussed...
October 30, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29054964/gene-expression-profiling-of-the-notch-ahr-il22-axis-at-homeostasis-and-in-response-to-tissue-injury
#13
Marc Weidenbusch, Severin Rodler, Shangqing Song, Simone Romoli, Julian A Marschner, Franziska Kraft, Alexander Holderied, Santosh Kumar, Shrikant R Mulay, Mohsen Honarpisheh, Satish Kumar Devarapu, Maciej Lech, Hans-Joachim Anders
Notch and Interleukin-22 signaling are known to regulate tissue homeostasis and response to injury in humans and mice, and the induction of endogenous arylhydrocarbon receptor ligands through Notch links the two pathways in a hierarchical fashion. However, in adults the species-, organ- and injury-specific gene expression of the Notch-AhR-IL22 axis components is unknown. We therefore performed gene expression profiling of DLL1, DLL3, DLL4, DLK1, DLK2, JAG1, JAG2, Notch1, Notch2, Notch3, Notch4, ADAM17/TACE, PSEN1, BSG/CD147, RBP-J, HES1, HES5, HEY1, HEYL, AHR, ARNT, ARNT2, CYP1A1, CYP24A1, IL22, IL22RA1, IL22RA2, IL10RB, and STAT3 under homeostatic conditions in 10 mature murine and human organs...
October 20, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/29050313/adipose-derived-mesenchymal-stem-cells-employed-exosomes-to-attenuate-aki-ckd-transition-through-tubular-epithelial-cell-dependent-sox9-activation
#14
Fengming Zhu, Octavia L S Chong Lee Shin, Guangchang Pei, Zhizhi Hu, Juan Yang, Han Zhu, Meng Wang, Jingyi Mou, Jie Sun, Yuxi Wang, Qian Yang, Zhi Zhao, Huzi Xu, Hui Gao, Weiqi Yao, Xiao Luo, Wenhui Liao, Gang Xu, Rui Zeng, Ying Yao
Acute kidney injury (AKI) predisposes patients to an increased risk into progressive chronic kidney disease (CKD), however effective treatments are still elusive. This study aimed to investigate the therapeutic efficacy of human adipose-derived MSCs (hAD-MSCs) in the prevention of AKI-CKD transition, and illuminate the role of Sox9, a vital transcription factor in the development of kidney, in this process. C57BL/6 mice were subjected to unilateral renal ischemia/reperfusion (I/R) with or without hAD-MSC treatment...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29047363/thymosin-%C3%AE-4-alleviates-renal-fibrosis-and-tubular-cell-apoptosis-through-tgf-%C3%AE-pathway-inhibition-in-uuo-rat-models
#15
Jing Yuan, Yan Shen, Xia Yang, Ying Xie, Xin Lin, Wen Zeng, Yingting Zhao, Maolu Tian, Yan Zha
BACKGROUND: Thymosin β4 (Tβ4) is closely associated with the cytoskeleton, inflammation, wound healing, angiogenesis, apoptosis, and myocardial regeneration, but the effects of Tβ4 treatment on chronic renal tubular interstitial fibrosis (CRTIF) are poorly known. This study aimed to examine the effects of Tβ4 on the renal apoptosis and the expression of transforming growth factor (TGF-β), E-cadherin, and α-smooth muscle actin (α-SMA) in CRTIF rat models. METHODS: Male SD rats were randomized into four groups (sham group, unilateral ureteral obstruction (UUO) group, UUO + low-dose Tβ4 group, and UUO + high-dose Tβ4 group)...
October 18, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/29046731/promoter-methylation-inhibits-expression-of-tumor-suppressor-kibra-in-human-clear-cell-renal-cell-carcinoma
#16
Katrin Schelleckes, Boris Schmitz, Giuliano Ciarimboli, Malte Lenders, Hermann J Pavenstädt, Edwin Herrmann, Stefan-Martin Brand, Eva Brand
BACKGROUND: KIBRA has been suggested as a key regulator of the Hippo signaling pathway, regulating organ size, cell contact inhibition, tissue regeneration as well as tumorigenesis and cystogenesis. We recently reported that human KIBRA expression depends on a complex alternative CpG-rich promoter system. Our current study aimed at the identification of epigenetic mechanisms associated with alterations in KIBRA expression regulation. RESULTS: We identified two separated methylation-sensitive CpG islands located to independent KIBRA promoter regions...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29042548/human-mesenchymal-stromal-cells-transplanted-into-mice-stimulate-renal-tubular-cells-and-enhance-mitochondrial-function
#17
Luca Perico, Marina Morigi, Cinzia Rota, Matteo Breno, Caterina Mele, Marina Noris, Martino Introna, Chiara Capelli, Lorena Longaretti, Daniela Rottoli, Sara Conti, Daniela Corna, Giuseppe Remuzzi, Ariela Benigni
Mesenchymal stromal cells (MSCs) are renoprotective and drive regeneration following injury, although cellular targets of such an effect are still ill-defined. Here, we show that human umbilical cord (UC)-MSCs transplanted into mice stimulate tubular cells to regain mitochondrial mass and function, associated with enhanced microtubule-rich projections that appear to mediate mitochondrial trafficking to create a reparative dialogue among adjacent tubular cells. Treatment with UC-MSCs in mice with cisplatin-induced acute kidney injury (AKI) regulates mitochondrial biogenesis in proximal tubuli by enhancing PGC1α expression, NAD(+) biosynthesis and Sirtuin 3 (SIRT3) activity, thus fostering antioxidant defenses and ATP production...
October 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28993191/the-anti-aging-protein-klotho-is-induced-by-gaba-therapy-and-exerts-protective-and-stimulatory-effects-on-pancreatic-beta-cells
#18
Gérald J Prud'homme, Yelena Glinka, Merve Kurt, Wenjuan Liu, Qinghua Wang
Systemic gamma-aminobutyric acid (GABA) therapy prevents or ameliorates type 1 diabetes (T1D), by suppressing autoimmune responses and stimulating pancreatic beta cells. In beta cells, it increases insulin secretion, prevents apoptosis, and induces regeneration. It is unclear how GABA mediates these effects. We hypothesized that Klotho is involved. It is a multi-functional protein expressed in the kidneys, brain, pancreatic beta cells, other tissues, and is cell-bound or soluble. Klotho knockout mice display accelerated aging, and in humans Klotho circulating levels decline with age, renal disease and diabetes...
December 2, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28985199/renal-lineage-cells-as-a-source-for-renal-regeneration
#19
REVIEW
Oren Pleniceanu, Dorit Omer, Orit Harari-Steinberg, Benjamin Dekel
The mammalian kidney is a highly complex organ, composed of various cell types within a unique structural framework. Nonetheless, in recent years, giant leaps in our understanding of nephrogenesis and the origin of new cells in the adult kidney, have resulted in novel routes to regenerate damaged nephrons. While several strategies can be envisioned to achieve this aim, one common theme is the reliance on renal lineage cells, since extra-renal cells, such as bone-marrow derived cells, have been shown to be devoid of renal differentiation capacity...
October 6, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28959634/safety-assessment-of-freeze-dried-powdered-cassiae-semen-evaluation-of-chronic-toxicity-26-week-in-sprague-dawley-rats
#20
Yanyu Pei, Ruoyao Wei, Jingjiang Sun, Hong Gao
There is a lack of safety assessment data regarding the long-term consumption of Cassiae Semen (Leguminosae, the seeds of Cassia obtusifolia L. and Cassia tora L.). Thus, we evaluated the toxicity of freeze-dried powdered Cassiae Semen in male and female Sprague-Dawley rats. Rats were intragastrically administered freeze-dried powdered Cassiae Semen at a dose of 0.5, 2.2, or 10.0 g/kg body weight/day for 26 weeks; several variables were assessed after 13 and 26 weeks as well as after a 4-week recovery period...
2017: Toxicology Reports
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