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Diabetes endocrine

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https://www.readbyqxmd.com/read/28919263/single-cell-gene-expression-analysis-of-a-human-esc-model-of-pancreatic-endocrine-development-reveals-different-paths-to-%C3%AE-cell-differentiation
#1
Maja Borup Kjær Petersen, Ajuna Azad, Camilla Ingvorsen, Katja Hess, Mattias Hansson, Anne Grapin-Botton, Christian Honoré
The production of insulin-producing β cells from human embryonic stem cells (hESCs) in vitro represents a promising strategy for a cell-based therapy for type 1 diabetes mellitus. To explore the cellular heterogeneity and temporal progression of endocrine progenitors and their progeny, we performed single-cell qPCR on more than 500 cells across several stages of in vitro differentiation of hESCs and compared them with human islets. We reveal distinct subpopulations along the endocrine differentiation path and an early lineage bifurcation toward either polyhormonal cells or β-like cells...
September 8, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28918023/repression-of-coup-tfi-improves-bone-marrow-derived-mesenchymal-stem-cell-differentiation-into-insulin-producing-cells
#2
Tao Zhang, Xiao-Hang Li, Dian-Bao Zhang, Xiao-Yu Liu, Feng Zhao, Xue-Wen Lin, Rui Wang, Hong-Xin Lang, Xi-Ning Pang
Identifying molecular mechanisms that regulate insulin expression in bone marrow-derived mesenchymal stem cells (bmMSCs) can provide clues on how to stimulate the differentiation of bmMSCs into insulin-producing cells (IPCs), which can be used as a therapeutic approach against type 1 diabetes (T1D). As repression factors may inhibit differentiation, the efficiency of this process is insufficient for cell transplantation. In this study, we used the mouse insulin 2 (Ins2) promoter sequence and performed a DNA affinity precipitation assay combined with liquid chromatography-mass spectrometry to identify the transcription factor, chicken ovalbumin upstream promoter transcriptional factor I (COUP-TFI)...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28915386/the-role-of-growth-hormone-receptor-in-%C3%AE-cell-function
#3
REVIEW
Shuang Wang, Jin Wu, Ning Wang, Li Zeng, Yingjie Wu
Growth hormone (GH) exerts numerous effects on tissues through binding to its receptor, GHR, which resides on cell membranes in many different organs and tissues. Endocrine pancreatic β cells are the only source of insulin secretion in response to metabolic demand, thereby regulating blood glucose and maintaining metabolic homeostasis. β cell dysfunction is the main composition of diabetes mellitus. Numerous studies have provided strong evidence that GHR signaling plays an independent role in β cell function...
September 8, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28913667/microsurgical-versus-endoscopic-transsphenoidal-resection-for-acromegaly-a-systematic-review-of-outcomes-and-complications
#4
REVIEW
Ching-Jen Chen, Natasha Ironside, I Jonathan Pomeraniec, Srinivas Chivukula, Thomas J Buell, Dale Ding, Davis G Taylor, Robert F Dallapiazza, Cheng-Chia Lee, Marvin Bergsneider
PURPOSE: The aim of this systematic review is to evaluate the long-term endocrine outcomes and postoperative complications following endoscopic vs. microscopic transsphenoidal resection (TSR) for the treatment of acromegaly. METHODS: A literature review was performed, and studies with at least five patients who underwent TSR for acromegaly, reporting biochemical remission criteria and long-term remission outcomes were included. Data extracted from each study included surgical technique, perioperative complications, biochemical remission criteria, and long-term remission outcomes...
September 14, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28902790/impact-of-treatments-on-diabetic-control-and-gastrointestinal-symptoms-after-total-pancreatectomy
#5
Maarten R Struyvenberg, Zhi Ven Fong, Camilia R Martin, Jennifer F Tseng, Thomas E Clancy, Carlos Fernández-Del Castillo, Hanna J Tillman, Melena D Bellin, Steven D Freedman
OBJECTIVES: The aims of this study were to compare the safety, efficacy, and patients' quality of life with continuous subcutaneous insulin infusion (CSII) versus multiple daily injections (MDIs) in type 3c diabetes mellitus (T3cDM) following total pancreatectomy (TP) and pancreatic enzyme usage. METHODS: Thirty-nine patients with T3cDM (18 CSII patients vs 21 MDI patients) who underwent TP between 2000 and 2016 at 3 Harvard-affiliated hospitals and the University of Minnesota returned prospectively obtained questionnaires examining quality of life and both endocrine and exocrine pancreatic functions...
October 2017: Pancreas
https://www.readbyqxmd.com/read/28901968/medical-comorbidity-in-polycystic-ovary-syndrome-with-special-focus-on-cardiometabolic-autoimmune-hepatic-and-cancer-diseases-an-updated-review
#6
Dorte Glintborg, Marianne Andersen
PURPOSE OF REVIEW: Polycystic ovary syndrome (PCOS) is defined by hyperandrogenism, irregular menses and polycystic ovaries when other causes are excluded. The possible implication of increased morbidity in PCOS for screening and follow-up is uncertain and is reviewed in this article. RECENT FINDINGS: The increased risk of type 2 diabetes and cardiovascular disease in PCOS is closely associated with BMI. Women with PCOS should be screened for the elements of the metabolic syndrome upon diagnosis...
September 8, 2017: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28895401/serum-metabolic-fingerprinting-identified-putatively-annotated-sphinganine-isomer-as-a-biomarker-of-wolfram-syndrome
#7
Agnieszka Zmyslowska, Michal Ciborowski, Maciej Borowiec, Wojciech Fendler, Karolina Pietrowska, Ewa Parfieniuk, Karolina Antosik, Aleksandra Pyziak, Arleta Waszczykowska, Adam Kretowski, Wojciech Mlynarski
Wolfram syndrome (WFS) is an example of a rare neurodegenerative disease with coexisting endocrine symptoms including diabetes mellitus as the first clinical symptom. Treatment of WFS is still only symptomatic and associated with poor prognosis. Potential markers of disease progression which could be useful for possible intervention trials are not available. Metabolomics has potential to identify such markers. In the present study serum fingerprinting by LC-QTOF-MS was performed in patients with WFS (n=13) and in patients with T1D (n=27)...
September 12, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28894791/pancreas-transplantation-with-portal-enteric-drainage-for-patients-with-endocrine-and-exocrine-insufficiency-from-extensive-pancreatic-resection
#8
Andrew S Barbas, David P Al-Adra, Nicolas Goldaracena, Martin J Dib, Markus Selzner, Gonzalo Sapisochin, Mark S Cattral, Ian D McGilvray
Although the primary indication for pancreas transplantation is type I diabetes, a small number of patients requires pancreas transplantation to manage combined endocrine and exocrine insufficiency that develops after extensive native pancreatic resection. The objective of this case report was to describe the operative and clinical course in 3 such patients and present an alternative technical approach.
September 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28894050/compounds-of-psoriasis-with-obesity-and-overweight
#9
Agnieszka Owczarczyk-Saczonek, Waldemar Placek
Many epidemiological studies have confirmed the relationship of obesity and psoriasis, and it is believed that obesity is an independent risk factor for its development and is associated with a worse prognosis. Furthermore, the reduction of body weight, using low-calorie diet combined with exercise, reduces the severity of psoriasis.Visceral adipose tissue is the largest endocrine organ, producing proinflammatory cytokines (TNF-α, IL-6, IL-17) and adipokines (adiponectin, omentin, chemerin). They participate in the development of dyslipidemia, insulin resistance, diabetes, and consequently of the cardiovascular diseases...
August 24, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28885548/novel-insights-into-the-adipokinome-of-obese-and-obese-diabetic-mouse-models
#10
Birgit Knebel, Simon Goeddeke, Gereon Poschmann, Daniel F Markgraf, Sylvia Jacob, Ulrike Nitzgen, Waltraud Passlack, Christina Preuss, Hans-Dieter Dicken, Kai Stühler, Sonja Hartwig, Stefan Lehr, Jorg Kotzka
The group of adipokines comprises hundreds of biological active proteins and peptides released from adipose tissue. Alterations of those complex protein signatures are suggested to play a crucial role in the pathophysiology of multifactorial, metabolic diseases. We hypothesized that also the pathophysiology of type-2-diabetes is linked to the dysregulation of the adipocyte secretome. To test this, we investigated mouse models with monogenic defects in leptin signaling which are susceptible to adipositas (C57BL/6 Cg-Lep(ob) (obob)) or adipositas with diabetes (C57BL/KS Cg-Lepr(db) (dbdb)) according to their genetic background...
September 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28883507/organotypic-pancreatoids-with-native-mesenchyme-develop-insulin-producing-endocrine-cells
#11
Marissa A Scavuzzo, Diane Yang, Malgorzata Borowiak
Replacement of lost beta cells in patients with diabetes has the potential to alleviate them of their disease, yet current protocols to make beta cells are inadequate for therapy. In vitro screens can reveal the signals necessary for endocrine maturation to improve beta cell production, however the complexities of in vivo development that lead to beta cell formation are lost in two-dimensional systems. Here, we create three-dimensional organotypic pancreatic cultures, named pancreatoids, composed of embryonic day 10...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28880481/%C3%AE-cells-are-not-uniform-after-all-novel-insights-into-molecular-heterogeneity-of-insulin-secreting-cells
#12
REVIEW
Dana Avrahami, Yue J Wang, Agnes Klochendler, Yuval Dor, Benjamin Glaser, Klaus H Kaestner
While the β-cells of the endocrine pancreas are defined as cells with high levels of insulin production and tight stimulus-secretion coupling, the existence of functional heterogeneity among them has been known for decades. Recent advances in molecular technologies, in particular single-cell profiling on both the protein and messenger RNA level, have uncovered that β-cells exist in several antigenically and molecularly definable states. Using antibodies to cell surface markers or multidimensional clustering of β-cells using more than 20 protein markers by mass cytometry, 4 distinct groups of β-cells could be differentiated...
September 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28880471/signals-in-the-pancreatic-islet-microenvironment-influence-%C3%AE-cell-proliferation
#13
REVIEW
Kristie I Aamodt, Alvin C Powers
The progressive loss of pancreatic β-cell mass that occurs in both type 1 and type 2 diabetes is a primary factor driving efforts to identify strategies for effectively increasing, enhancing or restoring β-cell mass. While factors that seem to influence β-cell proliferation in specific contexts have been described, reliable stimulation of human β-cell proliferation has remained a challenge. Importantly, β-cells exist in the context of a complex, integrated pancreatic islet microenvironment where they interact with other endocrine cells, vascular endothelial cells, extracellular matrix, neuronal projections and islet macrophages...
September 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28880010/chronic-pancreatitis
#14
REVIEW
Jorg Kleeff, David C Whitcomb, Tooru Shimosegawa, Irene Esposito, Markus M Lerch, Thomas Gress, Julia Mayerle, Asbjørn Mohr Drewes, Vinciane Rebours, Fatih Akisik, J Enrique Domínguez Muñoz, John P Neoptolemos
Chronic pancreatitis is defined as a pathological fibro-inflammatory syndrome of the pancreas in individuals with genetic, environmental and/or other risk factors who develop persistent pathological responses to parenchymal injury or stress. Potential causes can include toxic factors (such as alcohol or smoking), metabolic abnormalities, idiopathic mechanisms, genetics, autoimmune responses and obstructive mechanisms. The pathophysiology of chronic pancreatitis is fairly complex and includes acinar cell injury, acinar stress responses, duct dysfunction, persistent or altered inflammation, and/or neuro-immune crosstalk, but these mechanisms are not completely understood...
September 7, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28875849/modulation-of-both-insulin-resistance-and-cancer-growth-by-inositol
#15
Mariano Bizzarri, Simona Dinicola, Alessandra Cucina
Insulin resistance indicates a deregulated set of biochemical pathways and physiological functions involved in the pathogenesis of a number of diseases, including type 2 diabetes and cancer. Conversely, a number of synthetic and natural insulin sensitizers, including inositol, have been recognized to exert both anti-diabetic as well as anti-cancer properties. Inositol participates in insulin transduction signaling, and deregulated inositol metabolism has been ascertained in several conditions associated with insulin resistance...
August 30, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28875689/liver-fibrosis-in-the-context-of-nonalcoholic-steatohepatitis-the-role-of-adipokines
#16
Giovanni DI Maira, Mirella Pastore, Fabio Marra
Liver fibrosis is a multifaceted process that occurs as a consequence of chronic liver injury. This process is characterized by inflammation, activation of matrix-producing cells, matrix deposition and remodeling, and epithelial cell regeneration. In subjects with chronic liver damage, fibrogenesis is favored by the presence of obesity and insulin resistance, which are also relevant risk factors for the development and progression of nonalcoholic steatohepatitis (NASH). It is now well-known that adipose tissue is not only involved in energy storage but also functions as an endocrine organ that secretes various bioactive substances known as adipokines...
September 5, 2017: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/28873383/incretins-and-their-endocrine-and-metabolic-functions
#17
Jochen Seufert
Incretins are hormones secreted into the blood stream from the gut mucosa in response to nutrient intake. They have been characterized based on their capacity to lower blood glucose levels. The more potent reduction of blood glucose coupled to a more intensive stimulation of insulin secretion, in response to oral glucose uptake, as compared to intravenous glucose infusion has further been termed the "incretin effect." As a prototype incretin hormone, the biology of glucagon-like peptide 1 (GLP-1) has been intensively studied...
2017: Endocrine Development
https://www.readbyqxmd.com/read/28869249/glp-1-and-the-kidney-from-physiology-to-pharmacology-and-outcomes-in-diabetes
#18
REVIEW
Marcel H A Muskiet, Lennart Tonneijck, Mark M Smits, Michaël J B van Baar, Mark H H Kramer, Ewout J Hoorn, Jaap A Joles, Daniël H van Raalte
The gastrointestinal tract - the largest endocrine network in human physiology - orchestrates signals from the external environment to maintain neural and hormonal control of homeostasis. Advances in understanding entero-endocrine cell biology in health and disease have important translational relevance. The gut-derived incretin hormone glucagon-like peptide 1 (GLP-1) is secreted upon meal ingestion and controls glucose metabolism by modulating pancreatic islet cell function, food intake and gastrointestinal motility, amongst other effects...
September 4, 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/28868946/vitamin-d-receptor-gene-polymorphisms-and-risk-of-polycystic-ovary-syndrome-in-south-indian-women
#19
Swapna Siddamalla, Tumu Venkat Reddy, Suresh Govatati, Nagendram Erram, Mamata Deenadayal, Sisinthy Shivaji, Manjula Bhanoori
Polycystic ovary syndrome (PCOS) is the most common endocrine disorder of reproductive age women. Emerging evidence suggests that Vitamin D Receptor (VDR) might be a causal factor for characteristics associated with PCOS such as obesity and type 2 diabetes. Present study investigated association between VDR gene BsmI A/G (rs1544410), ApaI A/C (rs7975232) and TaqI T/C (rs731236) single nucleotide polymorphisms and PCOS risk in South Indian women. Genotyping of VDR gene SNPs was carried out in PCOS patients (n = 95) and controls (n = 130) by PCR-RFLP method and confirmed by sequencing analysis...
September 3, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28867213/transgenerational-pancreatic-impairment-with-igf2-h19-epigenetic-alteration-induced-by-p-p-dde-exposure-in-early-life
#20
Yang Song, Lei Yang
The hypothesis of fetal origins indicates that exposures in early development could induce epigenetic modifications in the male germ-line, affecting the susceptibility of adult-onset disease for generations. p,p'-DDE, the primary metabolite of persistent organochlorine pesticide DDT, is highly correlated with impaired glucose tolerance (IGT) and a strong contributing factor to type 2 diabetes. In our previous study, ancestral p,p'-DDE exposure could induce transgenerational impaired male fertility with sperm Igf2 hypomethylation...
September 1, 2017: Toxicology Letters
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