keyword
MENU ▼
Read by QxMD icon Read
search

Islet cells

keyword
https://www.readbyqxmd.com/read/28726200/intranasal-insulin-restores-metabolic-parameters-and-insulin-sensitivity-in-rats-with-metabolic-syndrome
#1
K V Derkach, A O Ivantsov, O V Chistyakova, I B Sukhov, D M Buzanakov, A A Kulikova, A O Shpakov
We studied the effect of 10-week treatment with intranasal insulin (0.5 IU/day) on glucose tolerance, glucose utilization, lipid metabolism, functions of pancreatic β cells, and insulin system in the liver of rats with cafeteria diet-induced metabolic syndrome. The therapy reduced body weight and blood levels of insulin, triglycerides, and atherogenic cholesterol that are typically increased in metabolic syndrome, normalized glucose tolerance and its utilization, and increased activity of insulin signaling system in the liver, thus reducing insulin resistance...
July 18, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28726153/immunological-issues-after-stem-cell-based-%C3%AE-cell-replacement
#2
REVIEW
Valeria Sordi, Silvia Pellegrini, Lorenzo Piemonti
PURPOSE OF REVIEW: Islet and pancreas transplantation prove that β cell replacement can cure the glycemic derangements in type 1 diabetes (T1D). Induced pluripotent stem cells (iPSCs) can differentiate into functional insulin-producing cells, able to restore normoglycemia in diabetic animal models. iPSCs in particular can be derived from the somatic cells of a person with T1D. This review aims to clarify if it is possible to transplant autologous iPSC-derived β cells without immunosuppression or which are the alternative approaches...
September 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28725915/ikk%C3%AE-inhibition-prevents-fat-induced-beta-cell-dysfunction-in-vitro-and-in-vivo-in-rodents
#3
Aleksandar Ivovic, Andrei I Oprescu, Khajag Koulajian, Yusaku Mori, Judith A Eversley, Liling Zhang, Rodolfo Nino-Fong, Gary F Lewis, Marc Y Donath, Michael Karin, Michael B Wheeler, Jan Ehses, Allen Volchuk, Catherine B Chan, Adria Giacca
AIMS/HYPOTHESIS: We have previously shown that oxidative stress plays a causal role in beta cell dysfunction induced by fat. Here, we address whether the proinflammatory kinase inhibitor of (nuclear factor) κB kinase β (IKKβ), which is activated by oxidative stress, is also implicated. METHODS: Fat (oleate or olive oil) was infused intravenously in Wistar rats for 48 h with or without the IKKβ inhibitor salicylate. Thereafter, beta cell function was evaluated in vivo using hyperglycaemic clamps or ex vivo in islets isolated from fat-treated rats...
July 20, 2017: Diabetologia
https://www.readbyqxmd.com/read/28725624/incretin-effect-of-urena-lobata-leaves-extract-on-structure-and-function-of-rats-islet-%C3%AE-cells
#4
Y Purnomo, D W Soeatmadji, S B Sumitro, M A Widodo
This study aims to determine the incretin effects of Urena lobata leaves extract on the structure and function of rats islet β-cells. This study utilizes male Sprague-Dawley rats divided into 2 control group and 3 test group (n = 5). Diabetic rats were induced with High Fructose Diet (HFD) and single dose intraperitoneal streptozotocin 25 mg/kg bw. Aqueous leaves extract of U. lobata was prepared by decoction methods and administrated orally with doses of 250, 500, and 1000 mg/kg bw for 4 weeks then incretin effect was evaluated by measuring serum GLP-1, insulin, and blood glucose levels...
July 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28724742/the-myokine-irisin-is-released-in-response-to-saturated-fatty-acids-and-promotes-pancreatic-beta-cell-survival-and-insulin-secretion
#5
Annalisa Natalicchio, Nicola Marrano, Giuseppina Biondi, Rosaria Spagnuolo, Rossella Labarbuta, Immacolata Porreca, Angelo Cignarelli, Marco Bugliani, Piero Marchetti, Sebastio Perrini, Luigi Laviola, Francesco Giorgino
This study explored the role of irisin as a new pancreatic beta-cell secretagogue and survival factor and its potential role in the communication between skeletal muscle and pancreatic beta-cells under lipotoxic conditions. Recombinant irisin stimulated insulin biosynthesis and glucose-stimulated insulin secretion (GSIS) in a PKA-dependent manner, and prevented saturated fatty acid-induced apoptosis in human and rat pancreatic beta-cells, as well as in human and murine pancreatic islets, via AKT/BCL2 signaling...
July 19, 2017: Diabetes
https://www.readbyqxmd.com/read/28724056/prevalence-of-pancreatic-autoantibodies-in-non-diabetic-patients-with-autoimmune-thyroid-disease-and-its-relation-to-insulin-secretion-and-glucose-tolerance
#6
Carolina Sallorenzo, Regina Silva, Teresa Kasamatsu, Sérgio Dib
Objective: We evaluated the prevalence of glutamic acid decarboxylase (GADA) and tyrosine phosphatase-protein antibodies (IA2A), their titers and their relation to first phase insulin response (FPIR) and glucose tolerance in autoimmune thyroid diseases (ATDs) patients. Subjects and methods: Graves' disease (GD; n = 181) and Hashimoto's thyroiditis (HT; n = 143) patients in addition to healthy controls (n = 93) were studied. Secondly, FPIR and oral glucose tolerance tests (OGTT) were performed in 11 anti-pancreatic islet-cell (+) and in 20 anti-pancreatic-cell (-) patients...
July 13, 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28723259/inappropriate-movement-of-rac1-contributes-to-glucotoxicity-of-the-islet-%C3%AE-cell
#7
Anjaneyulu Kowluru
No abstract text is available yet for this article.
July 19, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28722834/effects-of-gip-glp-1-and-glp-1ras-on-bone-cell-metabolism
#8
Morten S S Hansen, Michaela Terencova, Jacob Frølich, Moustapha Kassem, Morten Frost
The relationship between gut and skeleton is increasingly recognised as part of the integrated physiology of the whole organism. The incretin hormones gastric inhibitory polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) are secreted from the intestine in response to nutrient intake and exhibit several physiological functions including regulation of islet hormone secretion and glucose levels. A number of GLP-1 receptor agonists (GLP-1RAs) are currently used in treatment of type 2 diabetes and obesity. However, GIP and GLP-1 cognate receptors are widely expressed suggesting that incretin hormones mediate effects beyond control of glucose homeostasis, and reports on associations between incretin hormones and bone metabolism have emerged...
July 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28721437/erk1-is-dispensable-for-mouse-pancreatic-beta-cell-function-but-is-necessary-for-glucose-induced-full-activation-of-msk1-and-creb
#9
Michele Leduc, Joy Richard, Safia Costes, Dany Muller, Annie Varrault, Vincent Compan, Julia Mathieu, Jean-François Tanti, Gilles Pagès, Jacques Pouyssegur, Gyslaine Bertrand, Stéphane Dalle, Magalie A Ravier
AIMS/HYPOTHESIS: Insufficient insulin secretion from pancreatic beta cells, which is associated with a decrease in beta cell mass, is a characteristic of type 2 diabetes. Extracellular signal-related kinase 1 and 2 (ERK1/2) inhibition in beta cells has been reported to affect insulin secretion, gene transcription and survival, although whether ERK1 and ERK2 play distinct roles is unknown. The aim of this study was to assess the individual roles of ERK1 and ERK2 in beta cells using ERK1 (also known as Mapk3)-knockout mice (Erk1 (-/-) mice) and pharmacological approaches...
July 18, 2017: Diabetologia
https://www.readbyqxmd.com/read/28717166/targeting-cellular-calcium-homeostasis-to-prevent-cytokine-mediated-beta-cell-death
#10
Amy L Clark, Kohsuke Kanekura, Zeno Lavagnino, Larry D Spears, Damien Abreu, Jana Mahadevan, Takuya Yagi, Clay F Semenkovich, David W Piston, Fumihiko Urano
Pro-inflammatory cytokines are important mediators of islet inflammation, leading to beta cell death in type 1 diabetes. Although alterations in both endoplasmic reticulum (ER) and cytosolic free calcium levels are known to play a role in cytokine-mediated beta cell death, there are currently no treatments targeting cellular calcium homeostasis to combat type 1 diabetes. Here we show that modulation of cellular calcium homeostasis can mitigate cytokine- and ER stress-mediated beta cell death. The calcium modulating compounds, dantrolene and sitagliptin, both prevent cytokine and ER stress-induced activation of the pro-apoptotic calcium-dependent enzyme, calpain, and partly suppress beta cell death in INS1E cells and human primary islets...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28715390/mammalian-cell-encapsulation-in-alginate-beads-using-a-simple-stirred-vessel
#11
Corinne A Hoesli, Roger L J Kiang, Kamini Raghuram, René G Pedroza, Karen E Markwick, Antonio M R Colantuoni, James M Piret
Cell encapsulation in alginate beads has been used for immobilized cell culture in vitro as well as for immunoisolation in vivo. Pancreatic islet encapsulation has been studied extensively as a means to increase islet survival in allogeneic or xenogeneic transplants. Alginate encapsulation is commonly achieved by nozzle extrusion and external gelation. Using this method, cell-containing alginate droplets formed at the tip of nozzles fall into a solution containing divalent cations that cause ionotropic alginate gelation as they diffuse into the droplets...
June 29, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28714601/cf-related-diabetes-containing-the-metabolic-miscreant-of-cystic-fibrosis
#12
Amir Moheet, Antoinette Moran
Cystic fibrosis-related diabetes (CFRD) is associated with both an increase in morbidity and mortality in people with cystic fibrosis (CF). With increased screening and improved life expectancy of people with CF, the prevalence of CFRD is expected to rise further. The underlying pathophysiological mechanisms causing glucose intolerance and diabetes in patients with CF are not well understood but both functional and structural abnormalities in islet cells are likely to have key roles. Insulin therapy improves health outcomes in patients with CF...
July 17, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28713640/human-adipose-derived-mesenchymal-stem-cells-respond-to-short-term-hypoxia-by-secreting-factors-beneficial-for-human-islets-in-vitro-and-potentiate-antidiabetic-effect-in-vivo
#13
Simen W Schive, Mohammad Reza Mirlashari, Grete Hasvold, Mengyu Wang, Dag Josefsen, Hans Petter Gullestad, Olle Korsgren, Aksel Foss, Gunnar Kvalheim, Hanne Scholz
Adipose-derived mesenchymal stem cells (ASCs) release factors beneficial for islets in vitro and protect against hyperglycemia in rodent models of diabetes. Oxygen tension has been shown to induce metabolic changes and alter ASCs' release of soluble factors. The effects of hypoxia on the antidiabetic properties of ASCs have not been explored. To investigate this, we incubated human ASCs for 48 h in 21% (normoxia) or 1% O2 (hypoxia) and compared viability, cell growth, surface markers, differentiation capability, and soluble factors in the conditioned media (CM)...
2017: Cell Medicine
https://www.readbyqxmd.com/read/28713424/prolonged-survival-of-subcutaneous-allogeneic-islet-graft-by-donor-chimerism-without-immunosuppressive-treatment
#14
Brend Ray-Sea Hsu, Shin-Huei Fu, Aline Yen Ling Wang
The aim of this study was to investigate whether tolerance-induced protection of islets in the renal subcapsular space can also prevent subcutaneous allogeneic islets from being rejected. We used bone marrow stem cells from C57BL/6 (H2(b)) mice to construct donor chimerism in conditioned diabetic BALB/c (H2(d)) mice and investigated the effect of donor chimerism on engraftment and survival of subcutaneously transplanted allogeneic islets in streptozotocin-induced diabetic mice. We also studied the anti-inflammatory effect of mesenchymal stem cell on islet engraftment...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28711973/piwi-interacting-rnas-as-novel-regulators-of-pancreatic-beta-cell-function
#15
Imène Sarah Henaoui, Cécile Jacovetti, Inês Guerra Mollet, Claudiane Guay, Jonathan Sobel, Lena Eliasson, Romano Regazzi
AIMS/HYPOTHESIS: P-element induced Wimpy testis (PIWI)-interacting RNAs (piRNAs) are small non-coding RNAs that interact with PIWI proteins and guide them to silence transposable elements. They are abundantly expressed in germline cells and play key roles in spermatogenesis. There is mounting evidence that piRNAs are also present in somatic cells, where they may accomplish additional regulatory tasks. The aim of this study was to identify the piRNAs expressed in pancreatic islets and to determine whether they are involved in the control of beta cell activities...
July 16, 2017: Diabetologia
https://www.readbyqxmd.com/read/28710947/variations-in-biofilm-formation-desiccation-resistance-and-benzalkonium-chloride-susceptibility-among-listeria-monocytogenes-strains-isolated-in-canada
#16
Marta J Piercey, Timothy C Ells, Andrew J Macintosh, Lisbeth Truelstrup Hansen
Listeria monocytogenes is a pathogenic foodborne microorganism noted for its ability to survive in the environment and food processing facilities. Survival may be related to the phenotype of individual strains including the ability to form biofilms and resist desiccation and/or sanitizer exposure. The objectives of this research were to compare 14 L. monocytogenes strains isolated from blood (3), food (6) and water (5) with respect to their benzalkonium chloride (BAC) sensitivity, desiccation resistance, and ability to form biofilm...
July 8, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28710530/proteomic-characterisation-reveals-active-wnt-signalling-by-human-multipotent-stromal-cells-as-a-key-regulator-of-beta-cell-survival-and-proliferation
#17
Miljan Kuljanin, Gillian I Bell, Stephen E Sherman, Gilles A Lajoie, David A Hess
AIMS/HYPOTHESIS: Novel strategies to stimulate the expansion of beta cell mass in situ are warranted for diabetes therapy. The aim of this study was to elucidate the secretome of human bone marrow (BM)-derived multipotent stromal cells (MSCs) with documented islet regenerative paracrine function. We hypothesised that regenerative MSCs will secrete a unique combination of protein factors that augment islet regeneration. METHODS: Human BM-derived MSCs were examined for glucose-lowering capacity after transplantation into streptozotocin-treated NOD/severe combined immunodeficiency (SCID) mice and segregated into samples with regenerative (MSC(R)) vs nonregenerative (MSC(NR)) capacity...
July 14, 2017: Diabetologia
https://www.readbyqxmd.com/read/28710249/amyloid-precursor-protein-in-pancreatic-islets
#18
Joshua Kulas, Kendra Puig, Colin K Combs
The amyloid precursor protein (APP) has been extensively investigated for its role in the production of amyloid beta (Aβ), a plaque forming peptide in Alzheimer's disease (AD). Epidemiological evidence suggests type 2 diabetes is a risk factor for AD. The pancreas is an essential regulator of blood glucose levels through the secretion of the hormones insulin and glucagon. Pancreatic dysfunction is a well characterized consequence of type 1 and type 2 diabetes. In this study we have examined the expression and processing of pancreatic APP to test the hypothesis that APP may play a role in pancreatic function and the pathophysiology of diabetes...
July 14, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28708480/optimizing-diabetes-treatment-in-the-presence-of-obesity
#19
REVIEW
Mary Angelynne Esquivel, M Cecilia Lansang
Evidence of a neurophysiologic mechanism that involves hormones from adipocytes, pancreatic islet cells, and the gastrointestinal tract implicated in both obesity and diabetes has led to a search for drugs that not only either target obesity and diabetes or reduce hemoglobin A1c, but also have weight loss as a potential side effect. The authors review medications approved for the treatment of type 2 diabetes mellitus (including pramlintide, also approved for type 1 diabetes) that also have weight loss as a side effect...
July 2017: Cleveland Clinic Journal of Medicine
https://www.readbyqxmd.com/read/28707305/controlled-basic-fibroblast-growth-factor-release-device-made-of-poly-ethyleneglycol-dimethacrylates-for-creating-a-subcutaneous-neovascular-bed-for-cell-transplantation
#20
Shinji Yamada, Nobuhiro Nagai, Saaya Saijo, Hirokazu Kaji, Matsuhiko Nishizawa, Kozue Imura, Masafumi Goto, Toshiaki Abe
Subcutaneous space is a potential site for the transplantation of cells such as islets for treatment of type 1 diabetes. To enhance engraftment, an optimal space for the growth of the transplanted cells is needed along with neovascularization. In this study, we developed a device using a photocurable resin, poly(ethyleneglycol) dimethacrylates, for controlled release of basic fibroblast growth factor (bFGF) to create a subcutaneous neovascular bed in rats. The device consists of a disk-shaped capsule with micro-pores and is composed of tri(ethyleneglycol) dimethacrylate (TEGDM) and a drug formulation of poly(ethyleneglycol) dimethacrylate (PEGDM)...
July 13, 2017: Journal of Biomedical Materials Research. Part A
keyword
keyword
70486
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"