keyword
MENU ▼
Read by QxMD icon Read
search

Islet

keyword
https://www.readbyqxmd.com/read/27925205/generation-of-insulin-producing-cells-from-human-induced-pluripotent-stem-cells-using-a-stepwise-differentiation-protocol-optimized-with-platelet-rich-plasma
#1
Seyed Ehsan Enderami, Yousef Mortazavi, Masoud Soleimani, Samad Nadri, Alireza Biglari, Reyhaneh Nassiri Mansour
Studies on patient-specific human-induced pluripotent stem cells (hiPSCs) as well as a series of autologous growth factors presumably will reveal their many benefits for cell base replacement therapy in type 1 diabetes mellitus (TIDM) patients in the future. For this purpose, we established a multistep protocol by adding platelet-rich plasma (PRP) that induce the hiPSCs into insulin-producing cells (IPCs). We present here a differentiation protocol consisting of five stages in two groups including protocol with PRP and without PRP...
December 7, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27923539/the-roles-of-the-co-culture-of-mescs-with-pancreatic-islets-and-liver-stromal-cells-in-the-differentiation-of-definitive-endoderm-cells
#2
Hoveizi Elham, Fathi Fardin, Hashemitabar Mahmod
Embryonic stem (ES) cells have a pluripotent ability to differentiate into a variety of cell lineages in vitro. Investigating the roles of the co-culture of mouse embryonic stem cells (mESCs) with pancreatic islets (PL) and liver stromal cells (LSCs) in the differentiation of definitive endoderm (DE) cells was the purpose of this study. Here by using PL derived from adult mouse and LSCs derived from mouse fetal liver, we are trying to introduce a new protocol which is devoid of growth factors. We calculated mESCs indirectly for 7 days and then we analyzed the resulting cells regarding DE genes and protein expression using qRT-PCR and immunocytochemistry...
December 3, 2016: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/27922941/exercise-training-ameliorates-glucosamine-induced-insulin-resistance-in-ovariectomized-rats
#3
Chung-Hwan Chen, Tsang-Hai Huang, Tsung-Lin Cheng, Chi-Fen Chang, Chau-Zen Wang, Meng-Hsing Wu, Lin Kang
OBJECTIVE: Glucosamine (GlcN), which has been reported to induce insulin resistance (IR), is a popular nutritional supplement used to treat osteoarthritis in menopausal women. We previously demonstrated that GlcN treatment caused IR in ovariectomized rats by reducing the expression of glucose transport protein subtype 4 (GLUT-4) in skeletal muscle. In the present study, we hypothesized that endurance exercise training can reverse GlcN-induced IR. METHODS: Fifty female rats were randomly divided into five groups with 10 rats in each group: (1) sham-operated group; (2) sham-operated group with GlcN treatment for 14 days; (3) ovariectomy (OVX) group; (4) OVX with GlcN treatment; and (5) OVX with GlcN treatment followed by exercise training (running program) for 8 weeks...
December 5, 2016: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/27922332/effect-of-moderate-and-high-intensity-chronic-exercise-on-the-pancreatic-islet-morphometry-in-healthy-rats-bdnf-receptor-participation
#4
Alberto Jiménez-Maldonado, Adolfo Virgen-Ortiz, Valery Melnikov, Alejandrina Rodríguez-Hernández, Armando Gamboa-Domínguez, Sergio Montero, Jesús Muñiz-Murguía, Mónica Lemus, Elena Roces de Álvarez-Buylla
A B S T R A C T The function and morphology of β-cells is largely dependent on insulin demand. As β-cells cover a bigger cell proportion in pancreas islets, changes of insulin producer cells affect the whole pancreatic islet morphology. Growth factors as the neurotrophins regulate the pancreas physiology, besides; physical exercise increases insulin sensitivity, and further modifies brain derived neurotrophic factor (BDNF) concentration in plasma. The aim of this study was to investigate the effects of chronic exercise (running in a treadmill for eight weeks) intensity on pancreatic islet morphometry in healthy state...
December 6, 2016: Islets
https://www.readbyqxmd.com/read/27922077/mast-cell-phenotype-tnf%C3%AE-expression-and-degranulation-status-in-non-small-cell-lung-cancer
#5
A Shikotra, C M Ohri, R H Green, D A Waller, P Bradding
Mast cell infiltration of tumour islets represents a survival advantage in non-small cell lung cancer (NSCLC). The phenotype and activation status of these mast cells is unknown. We investigated the mast cell phenotype in terms of protease content (tryptase-only [MCT], tryptase + chymase [MCTC]) and tumour necrosis factor-alpha (TNFα) expression, and extent of degranulation, in NSCLC tumour stroma and islets. Surgically resected tumours from 24 patients with extended survival (ES; mean survival 86.5 months) were compared with 25 patients with poor survival (PS; mean survival 8...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27920473/na-hco3-cotransporter-is-expressed-on-%C3%AE-and-%C3%AE-cells-during-rat-pancreatic-development
#6
Li-Hua Cao, Cheng-Cai Xia, Zhao-Chun Shi, Ning Wang, Zheng-Hua Gu, Li-Zhi Yu, Qi Wan, Wei De
AIM: To determine the expression and localization of the electrogenic Na(+)/HCO3(-) cotransporter (NBC1) in rat pancreas during development. METHODS: The rat pancreas from postnatal and embryos removed from the uterus of pregnant rats that had been sacrificed by CO2 asphyxiation were used. Rat pancreas from embryonic day (E) 15.5 and E18.5 rat embryos was isolated under a stereomicroscope. Rat pancreas from postnatal (P) days 0, 7, 14, 21 and adult was directly isolated by the unaided eye...
November 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27920090/islet-derived-cd4-t-cells-targeting-proinsulin-in-human-autoimmune-diabetes
#7
Aaron W Michels, Laurie G Landry, Kristen A McDaniel, Liping Yu, Martha Campbell-Thompson, William W Kwok, Kenneth L Jones, Peter A Gottlieb, John W Kappler, Qizhi Tang, Bart O Roep, Mark A Atkinson, Clayton E Mathews, Maki Nakayama
Type 1 diabetes results from chronic autoimmune destruction of insulin-producing beta cells within pancreatic islets. While insulin is a critical self-antigen in animal models of autoimmune diabetes, due to extremely limited access to pancreas samples, little is known about human antigenic targets for islet-infiltrating T-cells. Here we show that proinsulin peptides are targeted by islet-infiltrating T-cells from type 1 diabetes patients. We identified hundreds of T-cells from inflamed pancreatic islets of three young type 1 diabetes organ donors with a short disease duration with high risk HLA genes using a direct T-cell receptor (TCR) sequencing approach without long-term cell culture...
December 5, 2016: Diabetes
https://www.readbyqxmd.com/read/27919252/neoplastic-diseases-in-the-domestic-ferret-mustela-putorius-furo-in-italy-classification-and-tissue-distribution-of-856-cases-2000-2010
#8
Giancarlo Avallone, Annalisa Forlani, Marco Tecilla, Elena Riccardi, Sara Belluco, Sara Francesca Santagostino, Guido Grilli, Kiumars Khadivi, Paola Roccabianca
BACKGROUND: The aim of this study was to describe the prevalence and tissue distribution of neoplasms in Italian ferrets, compared to the epidemiological data previously reported in USA and Japan. METHODS: Signalment and diagnoses of pathological submissions received between 2000 and 2010 were searched; cases with the diagnosis of neoplasm were selected and original sections reviewed to confirm the diagnosis. RESULTS: Nine-hundred and ten samples were retrieved, 690 of which included at least one tumour for a total of 856 tumours...
December 5, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27917052/the-blowflies-of-the-madeira-archipelago-species-diversity-distribution-and-identification-diptera-calliphoridaes-l
#9
Catarina Prado E Castro, Krzysztof Szpila, Anabel Martínez-Sánchez, Rego, Isamberto Silva, Artur R M Serrano, Mário Boieiro
Knowledge on the taxonomic diversity and distribution of blowflies from the Madeira Archipelago is updated. New and interesting findings are reported for poorly studied islands and islets of this archipelago, together with a brief analysis of the diversity of Macaronesian Calliphoridae s. l. Seven blowfly species were collected during this study, including the first records of Calliphora vicina Robineau-Desvoidy, 1830, Chrysomya albiceps (Wiedemann, 1819), Lucilia sericata (Meigen, 1826), Pollenia rudis (Fabricius, 1794) and Stomorhina lunata (Fabricius, 1805) from Porto Santo, and of Calliphora vicina, Lucilia sericata and Stomorhina lunata from Desertas Islands...
2016: ZooKeys
https://www.readbyqxmd.com/read/27916774/non-islet-cell-tumor-hypoglycemia-caused-by-a-big-insulin-like-growth-factor-ii-producing-hepatocellular-carcinoma-an-autopsy-case-report
#10
Hirohito Naruse, Norihiko Shimoyama, Tsugumi Satoh, Yoshiya Yamamoto, Kazuteru Hatanaka, Taiki Kudo, Masayoshi Ohno, Kazuharu Suzuki, Hajime Hirata, Marina Suzuki
A 73-year-old man with a hepatocellular carcinoma was admitted to our hospital. He suffered from recurrent severe hypoglycemia. An autopsy was performed after his death. Anti-insulin-like growth factor II (IGF-II) monoclonal antibody immunostaining of the hepatocellular carcinoma was positive. Western immunoblot analysis of the serum revealed highly elevated IGF-II. Therefore, we diagnosed this case as a non-islet cell tumor hypoglycemia caused by a big IGF-II-producing hepatocellular carcinoma.
2016: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/27916275/artemisinins-target-gabaa-receptor-signaling-and-impair-%C3%AE-cell-identity
#11
Jin Li, Tamara Casteels, Thomas Frogne, Camilla Ingvorsen, Christian Honoré, Monica Courtney, Kilian V M Huber, Nicole Schmitner, Robin A Kimmel, Roman A Romanov, Caterina Sturtzel, Charles-Hugues Lardeau, Johanna Klughammer, Matthias Farlik, Sara Sdelci, Andhira Vieira, Fabio Avolio, François Briand, Igor Baburin, Peter Májek, Florian M Pauler, Thomas Penz, Alexey Stukalov, Manuela Gridling, Katja Parapatics, Charlotte Barbieux, Ekaterine Berishvili, Andreas Spittler, Jacques Colinge, Keiryn L Bennett, Steffen Hering, Thierry Sulpice, Christoph Bock, Martin Distel, Tibor Harkany, Dirk Meyer, Giulio Superti-Furga, Patrick Collombat, Jacob Hecksher-Sørensen, Stefan Kubicek
Type 1 diabetes is characterized by the destruction of pancreatic β cells, and generating new insulin-producing cells from other cell types is a major aim of regenerative medicine. One promising approach is transdifferentiation of developmentally related pancreatic cell types, including glucagon-producing α cells. In a genetic model, loss of the master regulatory transcription factor Arx is sufficient to induce the conversion of α cells to functional β-like cells. Here, we identify artemisinins as small molecules that functionally repress Arx by causing its translocation to the cytoplasm...
November 30, 2016: Cell
https://www.readbyqxmd.com/read/27916274/long-term-gaba-administration-induces-alpha-cell-mediated-beta-like-cell-neogenesis
#12
Nouha Ben-Othman, Andhira Vieira, Monica Courtney, Fabien Record, Elisabet Gjernes, Fabio Avolio, Biljana Hadzic, Noémie Druelle, Tiziana Napolitano, Sergi Navarro-Sanz, Serena Silvano, Keith Al-Hasani, Anja Pfeifer, Sandra Lacas-Gervais, Gunter Leuckx, Laura Marroquí, Julien Thévenet, Ole Dragsbaek Madsen, Decio Laks Eizirik, Harry Heimberg, Julie Kerr-Conte, François Pattou, Ahmed Mansouri, Patrick Collombat
The recent discovery that genetically modified α cells can regenerate and convert into β-like cells in vivo holds great promise for diabetes research. However, to eventually translate these findings to human, it is crucial to discover compounds with similar activities. Herein, we report the identification of GABA as an inducer of α-to-β-like cell conversion in vivo. This conversion induces α cell replacement mechanisms through the mobilization of duct-lining precursor cells that adopt an α cell identity prior to being converted into β-like cells, solely upon sustained GABA exposure...
November 18, 2016: Cell
https://www.readbyqxmd.com/read/27915019/the-impact-of-cell-surface-pegylation-and-short-course-immunotherapy-on-islet-graft-survival-in-an-allogeneic-murine-model
#13
Jaime A Giraldo, R Damaris Molano, Hernán R Rengifo, Carmen Fotino, Kerim M Gattás-Asfura, Antonello Pileggi, Cherie L Stabler
: Islet transplantation is a promising therapy for Type 1 diabetes mellitus; however, host inflammatory and immune responses lead to islet dysfunction and destruction, despite potent systemic immunosuppression. Grafting of poly(ethylene glycol) (PEG) to the periphery of cells or tissues can mitigate inflammation and immune recognition via generation of a steric barrier. Herein, we sought to evaluate the complementary impact of islet PEGylation with a short-course immunotherapy on the survival of fully-MHC mismatched islet allografts (DBA/2 islets into diabetic C57BL/6J recipients)...
November 30, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27914923/alloantigen-gene-transfer-to-hepatocytes-promotes-tolerance-to-pancreatic-islet-graft-by-inducing-cd8-regulatory-t-cells
#14
Valentin Le Guen, Jean-Paul Judor, Françoise Boeffard, Vanessa Gauttier, Nicolas Ferry, Jean-Paul Soulillou, Sophie Brouard, Sophie Conchon
BACKGROUND & AIM: Induction of donor-specific immune tolerance is a good alternative to chronic life-long immunosuppression for transplant patients. Donor major histocompatibility complex (MHC) molecules represent the main targets of the allogeneic immune response of transplant recipients. Liver-targeted gene transfer with viral vectors induces tolerance toward the encoded antigen. The aim of this work was to determine whether alloantigen gene transfer to hepatocytes induces tolerance and promotes graft acceptance...
November 30, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/27914538/adaptive-response-of-rat-pancreatic-%C3%AE-cells-to-insulin-resistance-induced-by-monocrotophos-biochemical-evidence
#15
Raju Nagaraju, Padmanabhan Sharda Rajini
Our previous findings clearly suggested the role of duration of exposure to monocrotophos (MCP) in the development of insulin resistance. Rats exposed chronically to MCP developed insulin resistance with hyperinsulinemia without overt diabetes. In continuation of this vital observation, we sought to delineate the biochemical mechanisms that mediate heightened pancreatic β-cell response in the wake of MCP-induced insulin resistance in rats. Adult rats were orally administered (0.9 and 1.8mg/kgb.w/d) MCP for 180days...
November 2016: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/27914526/jiawei-erzhiwan-improves-menopausal-metabolic-syndrome-by-enhancing-insulin-secretion-in-pancreatic-%C3%AE-cells
#16
Xiao-Meng Wan, Mu Zhang, Pei Zhang, Zhi-Shen Xie, Feng-Guo Xu, Ping Zhou, Shi-Ping Ma, Xiao-Jun Xu
Menopausal metabolic syndrome (MMS) is a series of syndrome caused by ovarian function decline and hormone insufficiency, and is a high risk factor for cardiovascular diseases (CVD) and type II diabetes mellitus (T2DM). Erzhiwan (EZW), composed of Herba Ecliptae and Fructus Ligustri Lucidi, is a traditional Chinese herbal formula that has been used to treat menopausal syndrome for many years. We added Herba Epimedii, Radix Rehmanniae, and Fructus Corni into EZW, to prepare a new formula, termed Jiawei Erzhiwan (JE)...
November 2016: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/27914514/protective-effects-of-fish-oil-and-pioglitazone-on-pancreatic-tissue-in-obese-kk-mice-with-type-2-diabetes
#17
Yuzuru Iizuka, Hyounju Kim, Takuya Izawa, Koji Sakurai, Satoshi Hirako, Masahiro Wada, Akiyo Matsumoto
n-3 Polyunsaturated fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), have protective effects against the pancreatic β-cell dysfunction through several mechanisms. Thiazolidines are insulin sensitizers and are used in treating patients with type 2 diabetes. Our previous study demonstrated that a combination of fish oil, which is rich with EPA and DHA, and pioglitazone exerts beneficial effects on obesity and diabetes through their actions on the liver and adipose tissue. However, it remains largely unknown whether such combination therapy affects the pancreas...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27912756/mechanisms-of-inflammatory-responses-and-development-of-insulin-resistance-how-are-they-interlinked
#18
Kanwal Rehman, Muhammad Sajid Hamid Akash
BACKGROUND: Insulin resistance (IR) is one of the major hallmark for pathogenesis and etiology of type 2 diabetes mellitus (T2DM). IR is directly interlinked with various inflammatory responses which play crucial role in the development of IR. Inflammatory responses play a crucial role in the pathogenesis and development of IR which is one of the main causative factor for the etiology of T2DM. METHODS: A comprehensive online English literature was searched using various electronic search databases...
December 3, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27911383/parallel-measurement-of-circadian-clock-gene-expression-and-hormone-secretion-in-human-primary-cell-cultures
#19
Volodymyr Petrenko, Camille Saini, Laurent Perrin, Charna Dibner
Circadian clocks are functional in all light-sensitive organisms, allowing for an adaptation to the external world by anticipating daily environmental changes. Considerable progress in our understanding of the tight connection between the circadian clock and most aspects of physiology has been made in the field over the last decade. However, unraveling the molecular basis that underlies the function of the circadian oscillator in humans stays of highest technical challenge. Here, we provide a detailed description of an experimental approach for long-term (2-5 days) bioluminescence recording and outflow medium collection in cultured human primary cells...
November 11, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911095/epigenetic-alterations-in-blood-mirror-age-associated-dna-methylation-and-gene-expression-changes-in-human-liver
#20
Madhusudhan Bysani, Alexander Perfilyev, Vanessa D de Mello, Tina Rönn, Emma Nilsson, Jussi Pihlajamäki, Charlotte Ling
AIM: To study the impact of aging on DNA methylation and mRNA expression in human liver. EXPERIMENTAL PROCEDURES: We analysed genome-wide DNA methylation and gene expression in human liver samples using Illumina 450K and HumanHT12 expression BeadChip arrays. RESULTS: DNA methylation analysis of ∼455,000 CpG sites in human liver revealed that age was significantly associated with altered DNA methylation of 20,396 CpG sites. Comparison of liver methylation data with published methylation data in other tissues showed that vast majority of the age-associated significant CpG sites overlapped between liver and blood, whereas a smaller overlap was found between liver and pancreatic islets or adipose tissue, respectively...
December 2, 2016: Epigenomics
keyword
keyword
11464
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"