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Diabetes regeneration

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https://www.readbyqxmd.com/read/28096308/-re-building-a-kidney
#1
Leif Oxburgh, Thomas J Carroll, Ondine Cleaver, Daniel R Gossett, Deborah K Hoshizaki, Jeffrey A Hubbell, Benjamin D Humphreys, Sanjay Jain, Jan Jensen, David L Kaplan, Carl Kesselman, Christian J Ketchum, Melissa H Little, Andrew P McMahon, Stuart J Shankland, Jason R Spence, M Todd Valerius, Jason A Wertheim, Oliver Wessely, Ying Zheng, Iain A Drummond
(Re)Building a Kidney is a National Institute of Diabetes and Digestive and Kidney Diseases-led consortium to optimize approaches for the isolation, expansion, and differentiation of appropriate kidney cell types and the integration of these cells into complex structures that replicate human kidney function. The ultimate goals of the consortium are two-fold: to develop and implement strategies for in vitro engineering of replacement kidney tissue, and to devise strategies to stimulate regeneration of nephrons in situ to restore failing kidney function...
January 17, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28091556/vegf-b-promotes-recovery-of-corneal-innervations-and-trophic-functions-in-diabetic-mice
#2
Guohu Di, Xiaowen Zhao, Xia Qi, Songmei Zhang, Lu Feng, Weiyun Shi, Qingjun Zhou
Vascular endothelial growth factor (VEGF)-B possesses the capacity of promoting injured peripheral nerve regeneration and restore their sensory and trophic functions. However, the contribution and mechanism of VEGF-B in diabetic peripheral neuropathy remains unclear. In the present study, we investigated the expression and role of VEGF-B in diabetic corneal neuropathy by using type 1 diabetic mice and cultured trigeminal ganglion (TG) neurons. Hyperglycemia attenuated the endogenous expression of VEGF-B in regenerated diabetic corneal epithelium, but not that of VEGF receptors in diabetic TG neurons and axons...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28087575/treating-inflammation-and-infection-in-the-21st-century-new-hints-from-decoding-resolution-mediators-and-mechanisms
#3
REVIEW
Charles N Serhan
Practitioners of ancient societies from the time of Hippocrates and earlier recognized and treated the signs of inflammation, heat, redness, swelling, and pain with agents that block or inhibit proinflammatory chemical mediators. More selective drugs are available today, but this therapeutic concept has not changed. Because the acute inflammatory response is host protective to contain foreign invaders, much of today's pharmacopeia can cause serious unwanted side effects, such as immune suppression. Uncontrolled inflammation is now considered pathophysiologic and is associated with many widely occurring diseases such as cardiovascular disease, neurodegenerative diseases, diabetes, obesity, and asthma, as well as classic inflammatory diseases (e...
January 13, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28074124/involvement-of-blood-mononuclear-cells-in-the-infertility-age-associated-diseases-and-cancer-treatment
#4
REVIEW
Antonin Bukovsky
Blood mononuclear cells consist of T cells and monocyte derived cells. Beside immunity, the blood mononuclear cells belong to the complex tissue control system (TCS), where they exhibit morphostatic function by stimulating proliferation of tissue stem cells followed by cellular differentiation, that is stopped after attaining the proper functional stage, which differs among various tissue types. Therefore, the term immune and morphostatic system (IMS) should be implied. The TCS-mediated morphostasis also consists of vascular pericytes controlled by autonomic innervation, which is regulating the quantity of distinct tissues in vivo...
December 26, 2016: World Journal of Stem Cells
https://www.readbyqxmd.com/read/28069556/regeneration-of-bone-using-nanoplex-delivery-of-fgf-2-and-bmp-2-genes-in-diaphyseal-long-bone-radial-defects-in-a-diabetic-rabbit-model
#5
Behnoush Khorsand, Nate Nicholson, Anh-Vu Do, John E Femino, James A Martin, Emily Petersen, Brian Guetschow, Douglas C Fredericks, Aliasger K Salem
Bone fracture healing impairment related to systemic diseases such as diabetes can be addressed by growth factor augmentation. We previously reported that growth factors such as fibroblast growth factor-2 (FGF-2) and bone morphogenetic protein-2 (BMP-2) work synergistically to encourage osteogenesis in vitro. In this report, we investigated if BMP-2 and FGF-2 together can synergistically promote bone repair in a leporine model of diabetes mellitus, a condition that is known to be detrimental to union. We utilized two kinds of plasmid DNA encoding either BMP-2 or FGF-2 formulated into polyethylenimine (PEI) complexes...
January 7, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28059593/clinical-relevance-of-epigenetics-in-the-onset-and-management-of-type-2-diabetes-mellitus
#6
Linda Sommese, Alberto Zullo, Francesco Paolo Mancini, Rossella Fabbricini, Andrea Soricelli, Claudio Napoli
Epigenetics is involved in the altered expression of gene networks that underlie insulin resistance and insufficiency. Major genes controlling β-cell differentiation and function, such as PAX4, PDX1, and GLP1 receptor, are epigenetically controlled. Epigenetics can cause insulin resistance through immunomediated pro-inflammatory actions related to several factors, such as NF-kB, osteopontin, and Toll-like receptors. Hereafter, we provide a critical and comprehensive summary on this topic with a particular emphasis on translational and clinical aspects...
January 6, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28046026/comparison-of-in-vitro-and-ex-vivo-wound-healing-assays-for-the-investigation-of-diabetic-wound-healing-and-demonstration-of-a-beneficial-effect-of-a-triterpene-extract
#7
Christopher Ueck, Thomas Volksdorf, Pia Houdek, Sabine Vidal-Y-Sy, Susanne Sehner, Bernhard Ellinger, Ralf Lobmann, Axel Larena-Avellaneda, Konrad Reinshagen, Ina Ridderbusch, Klaas Kohrmeyer, Ingrid Moll, Rolf Daniels, Philipp Werner, Irmgard Merfort, Johanna M Brandner
Diabetes mellitus is a frequent cause for chronic, difficult-to-treat wounds. New therapies for diabetic wounds are urgently needed and in-vitro or ex-vivo test systems are essential for the initial identification of new active molecules. The aim of this study is to compare in-vitro and ex-vivo test systems for their usability for early drug screening and to investigate the efficacy of a birch bark triterpene extract (TE) that has been proven ex-vivo and clinically to accelerate non-diabetic wound healing (WH), in a diabetic context...
2017: PloS One
https://www.readbyqxmd.com/read/28027236/complementary-effects-of-negative-pressure-wound-therapy-and-pulsed-radiofrequency-energy-on-cutaneous-wound-healing-in-diabetic-mice
#8
Bin Chen, Huang-Kai Kao, Ziqing Dong, Zhaohua Jiang, Lifei Guo
BACKGROUND: Negative-pressure wound therapy and pulsed radiofrequency energy are two clinical modalities used to treat soft-tissue wounds. They are purported to affect healing differently. The aim of this experimental study was to contrast the two modalities at a mechanistic level and to investigate whether their combined therapy could achieve additive and complementary effects on wound healing. METHODS: Full-thickness dorsal cutaneous wounds of diabetic, db/db, mice were treated with either negative-pressure wound therapy, pulsed radiofrequency energy, or combined therapies...
January 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28024317/induction-of-nestin-early-expression-as-a-hallmark-for-mesenchymal-stem-cells-expression-of-pdx-1-as-a-pre-disposing-factor-for-their-conversion-into-insulin-producing-cells
#9
Marisela Martinez-Gamboa, Delia Elba Cruz-Vega, Jorge Moreno Cuevas, Maria Teresa Gonzalez-Garza
Diabetes constitutes a worldwide epidemic that affects all ethnic groups. Cell therapy is one of the best alternatives of treatment, by providing an effective way to regenerate insulin-producing cells lost during the course of the disease, but many issues remain to be solved. Several groups have been working in the development of a protocol capable of differentiating Mesenchymal Stem Cells (MSCs) into physiologically sound Insulin Producing Cells (IPCs). In order to obtain a simple, fast and direct method, we propose in this manuscript the induction of MSCs to express NESTIN in a short time period (2 h), proceeded by incubation in a low glucose induced medium (24 h) and lastly by incubation in a high glucose medium...
December 31, 2016: International Journal of Stem Cells
https://www.readbyqxmd.com/read/28013047/adipose-derived-mesenchymal-stem-cells-ameliorate-hyperglycemia-through-regulating-hepatic-glucose-metabolism-in-type-2-diabetic-rats
#10
Min Xie, Hao Jie Hao, Yu Cheng, Zong Yan Xie, Ya Qi Yin, Qi Zhang, Jie Qing Gao, Hong Yu Liu, Yi Ming Mu, Wei Dong Han
Infusion of mesenchymal stem cells (MSCs) has been identified in the rapid alleviation in hyperglycemia of diabetic individuals, but the mechanism involved has not been adequately explained by these cells' potential role in modulating system insulin sensitivity and islet regeneration. In this study, we demonstrated adipose-derived mesenchymal stem cells (ASCs) produced significantly lower blood glucose via promoting hepatic glycogen synthesis and inhibiting hepatic glucose production within 24 h after infusion in T2DM rats...
December 21, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28009527/reg2-expression-is-required-for-pancreatic-islet-compensation-in-response-to-aging-and-high-fat-diet-induced-obesity
#11
Qing Li, Bing Li, Xiaoliang Miao, Christopher Ramgattie, Zu-Hua Gao, Jun-Li Liu
Maintaining pancreatic β-cell mass and function is essential for normal insulin production and glucose homeostasis. Regenerating islet-derived 2 (Reg2, Reg II, human orthologue Reg1B) gene is normally expressed in pancreatic acinar cells and significantly induced in responses to diabetes, pancreatitis, high-fat diet and during pancreatic regeneration. In order to evaluate the role of endogenous Reg2 production in normal β-cell function, we characterized Reg2 gene deficient mice normally and when subjected to several pathological challenges...
December 23, 2016: Endocrinology
https://www.readbyqxmd.com/read/28006991/efficacy-of-autologous-bone-marrow-derived-mesenchymal-stem-cells-and-mononuclear-cells-transplantation-in-type-2-diabetes-mellitus-a-randomized-placebo-controlled-comparative-study
#12
Shobhit Bhansali, Pinaki Dutta, Vinod Kumar, Mukesh Kumar Yadav, Ashish Jain, Sunder Mudaliar, Shipra Bhansali, R R Sharma, Vivekanand Jha, N Marwaha, N Khandelwal, Anand Srinivasan, Naresh Sachdeva, Meredith Hawkins, Anil Bhansali
Drugs targeting β-cells have provided new options in the management of T2DM; however, their role in β-cell regeneration remains elusive. The recent emergence of cell-based therapies like autologous bone marrow-derived mesenchymal stem cells (ABM-MSCs) and mononuclear cells (ABM-MNCs) seems to offer a pragmatic approach to augment β-cell function/mass. This study aims to examine the efficacy and safety of ABM-MSCs and ABM-MNCs transplantation in T2DM and explores the alterations in glucose-insulin homeostasis by metabolic studies...
December 23, 2016: Stem Cells and Development
https://www.readbyqxmd.com/read/28003126/emerging-role-of-hippo-signalling-in-pancreatic-biology-yap-re-expression-and-plausible-link-to-islet-cell-apoptosis-and-replication
#13
REVIEW
Anjana Sharma, Veera Ganesh Yerra, Ashutosh Kumar
Diabetes mellitus is an ailment that develops when the functional capacity of the pancreas does not meet the metabolic requirements of the whole body, either due to insulin insufficiency or resistance to insulin action. Current therapies that control glycaemia are limited by their unwanted effects or their inability to prevent the development of long-term complications. Regeneration and replacement of beta cell therapies are shaping the goals of future management of diabetes. The Hippo pathway, first discovered in Drosophila melanogaster, plays a vital role in controlling the organ size...
December 18, 2016: Biochimie
https://www.readbyqxmd.com/read/27994512/exosomes-derived-from-human-endothelial-progenitor-cells-accelerate-cutaneous-wound-healing-by-promoting-angiogenesis-through-erk1-2-signaling
#14
Jieyuan Zhang, Chunyuan Chen, Bin Hu, Xin Niu, Xiaolin Liu, Guowei Zhang, Changqing Zhang, Qing Li, Yang Wang
Chronic skin wounds represent one of the most common and disabling complications of diabetes. Endothelial progenitor cells (EPCs) are precursors of endothelial cells and can enhance diabetic wound repair by facilitating neovascularization. Recent studies indicate that the transplanted cells exert therapeutic effects primarily via a paracrine mechanism and exosomes are an important paracrine factor that can be directly used as therapeutic agents for regenerative medicine. However, application of exosomes in diabetic wound repair has been rarely reported...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27993221/exendin-4-a-glucagon-like-peptide-1-analogue-accelerates-diabetic-wound-healing
#15
Jun-Neng Roan, Han-Ni Cheng, Chao-Chung Young, Chi-Ju Lee, Ming-Long Yeh, Chwan-Yau Luo, Yau-Sheng Tsai, Chen-Fuh Lam
BACKGROUND: Diabetes disregulates inflammatory responses and impairs vascular function in wounds. Glucagon-like peptide-1 receptor (Glp-1R) agonists are hypoglycemic agents with pleiotropic vascular protective and anti-inflammatory effects. The therapeutic potential of a Glp-1 analogue in a diabetic rat model of excisional wound injury was investigated. MATERIALS AND METHODS: Excisional wounds were created on the dorsum of streptozotocin-induced diabetic rats, which received placebo or Glp-1 analogue exendin-4 (Ex4; 0...
February 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/27993138/scaling-up-complex-interventions-insights-from-a-realist-synthesis
#16
REVIEW
Cameron D Willis, Barbara L Riley, Lisa Stockton, Aneta Abramowicz, Dana Zummach, Geoff Wong, Kerry L Robinson, Allan Best
Preventing chronic diseases, such as cancer, cardiovascular disease and diabetes, requires complex interventions, involving multi-component and multi-level efforts that are tailored to the contexts in which they are delivered. Despite an increasing number of complex interventions in public health, many fail to be 'scaled up'. This study aimed to increase understanding of how and under what conditions complex public health interventions may be scaled up to benefit more people and populations.A realist synthesis was conducted and discussed at an in-person workshop involving practitioners responsible for scaling up activities...
December 19, 2016: Health Research Policy and Systems
https://www.readbyqxmd.com/read/27992530/anti-inflammatory-effects-of-rosiglitazone-in-obesity-impaired-wound-healing-depend-on-adipocyte-differentiation
#17
Anna Siebert, Itamar Goren, Josef Pfeilschifter, Stefan Frank
Combined diabetes-obesity syndromes severely impair regeneration of acute skin wounds in mouse models. This study assessed the contribution of subcutaneous adipose tissue to exacerbated wound inflammatory conditions. Genetically obese (ob/ob) mice showed an increased expression of positive transcriptional effectors of adipocyte differentiation such as Krüppel-like factor (KLF)-5 and peroxisome proliferator-activated receptor (PPAR)-γ and an associated expression of leptin and fatty acid-binding protein (FABP)-4, but also CXCL2 in isolated subcutaneous fat...
2016: PloS One
https://www.readbyqxmd.com/read/27981888/diabetes-mellitus-and-bone-regeneration-a-systematic-review-and-meta-analysis-of-animal-studies
#18
Winston Adam Camargo, Rob de Vries, Judith van Luijk, Ewald M Bronkhorst, Jan Willem M Hoekstra, Jeroen van den Beucken, John A Jansen
Background The regeneration of bone defects resulting from trauma, resection of tumours, infection or congenital disease is a challenge, and bone grafts are utilized in a wide array of clinical settings to augment bone repair and regeneration. Diabetes Mellitus is a chronic metabolic disease, which affects 8.3% of the world population, summing approximately 387 million individuals. The consequences of the disease, e.g. hyperglycaemia, have been linked to poor bone quality and reduced capacity to form bone, influencing bone healing...
December 16, 2016: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/27979878/implications-of-telomeres-and-telomerase-in-endometrial-pathology
#19
REVIEW
D K Hapangama, A Kamal, G Saretzki
BACKGROUND: Eukaryotic chromosomal ends are linear and are protected by nucleoprotein complexes known as telomeres. The complex structural anatomy and the diverse functions of telomeres as well as the unique reverse transcriptase enzyme, telomerase that maintains telomeres are under intensive scientific scrutiny. Both are involved in many human diseases including cancer, but also in ageing and chronic disease such as diabetes. Their intricate involvement in many cellular processes and pathways is being dynamically deciphered in many organs including the endometrium...
December 15, 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27974246/micrornas-106b-and-222-improve-hyperglycemia-in-a-mouse-model-of-insulin-deficient-diabetes-via-pancreatic-%C3%AE-cell-proliferation
#20
Sohei Tsukita, Tetsuya Yamada, Kei Takahashi, Yuichiro Munakata, Shinichiro Hosaka, Hironobu Takahashi, Junhong Gao, Yuta Shirai, Shinjiro Kodama, Yoichiro Asai, Takashi Sugisawa, Yumiko Chiba, Keizo Kaneko, Kenji Uno, Shojiro Sawada, Junta Imai, Hideki Katagiri
Major symptoms of diabetes mellitus manifest, once pancreatic β-cell numbers have become inadequate. Although natural regeneration of β-cells after injury is very limited, bone marrow (BM) transplantation (BMT) promotes their regeneration through undetermined mechanism(s) involving inter-cellular (BM cell-to-β-cell) crosstalk. We found that two microRNAs (miRNAs) contribute to BMT-induced β-cell regeneration. Screening murine miRNAs in serum exosomes after BMT revealed 42 miRNAs to be increased. Two of these miRNAs (miR-106b-5p and miR-222-3p) were shown to be secreted by BM cells and increased in pancreatic islet cells after BMT...
February 2017: EBioMedicine
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