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Insulin antibodies

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https://www.readbyqxmd.com/read/28550165/the-clasp2-protein-interaction-network-in-adipocytes-links-clip2-to-agap3-clasp2-to-g2l1-mark2-and-soga1-and-identifies-soga1-as-a-microtubule-associated-protein
#1
Rikke Kruse, James Krantz, Natalie Barker, Richard Coletta, Ruslan Rafikov, Moulun Luo, Kurt Hoejlund, Lawrence J Mandarino, Paul R Langlais
CLASP2 is a microtubule-associated protein that undergoes insulin-stimulated phosphorylation and co-localization with reorganized actin and GLUT4 at the plasma membrane. To gain insight to the role of CLASP2 in this system, we developed and successfully executed a streamlined interactome approach and built a CLASP2 protein network in 3T3-L1 adipocytes. Using two different commercially available antibodies for CLASP2 and an antibody for epitope-tagged, overexpressed CLASP2, we performed multiple affinity purification coupled with mass spectrometry (AP-MS) experiments in combination with label-free quantitative proteomics and analyzed the data with the bioinformatics tool Significance Analysis of Interactome (SAINT)...
May 26, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28544772/ganglioside-gm3-content-in-skeletal-muscles-is-increased-in-type-2-but-decreased-in-type-1-diabetes-rat-models-implications-of-glycosphingolipid-metabolism-in-pathophysiology-of-diabetes
#2
Josko Bozic, Anita Markotic, Vedrana Cikes-Culic, Anela Novak, Josip Andelo Borovac, Hrvoje Vucemilovic, Gorana Trgo, Tina Ticinovic Kurir
BACKGROUND: Ganglioside GM3 is an abundant constituent of the plasma membrane where its accumulation attenuates insulin receptor signaling. Considering the role of skeletal muscles for insulin-stimulated glucose uptake, the aim of this study was to determine the expression of GM3 and its precursors in skeletal muscle of diabetes mellitus type 1 (DM1) and type 2 (DM2) rat models. METHODS: Diabetes was induced by streptozotocin (55 mg/kg for DM1 and 35 mg/kg for DM2) injection to male Sprague-Dawley rats which were fed with normal pellet diet (DM1 type) or high-fat diet (DM2 type)...
May 22, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/28544544/insulin-like-growth-factor-1-signaling-is-responsible-for-cathepsin-g-induced-aggregation-of-breast-cancer-mcf-7-cells
#3
Riyo Morimoto-Kamata, Satoru Yui
Cathepsin G (CG), a neutrophil serine protease, induces cell migration and multicellular aggregation of human breast cancer MCF-7 cells in a process that is dependent on E-cadherin and CG enzymatic activity. While these tumor cell aggregates can cause tumor emboli that could represent intravascular growth and extravasation into the surrounding tissues, resulting in metastasis, the molecular mechanism underlying this process remains poorly characterized. In this study, we aimed to identify the signaling pathway that is triggered during CG-mediated stimulation of cell aggregation...
May 24, 2017: Cancer Science
https://www.readbyqxmd.com/read/28534431/ameliorating-effect-of-anti-alzheimer-s-drugs-on-the-bidirectional-association-between-type-2-diabetes-mellitus-and-alzheimer-s-disease
#4
Amira S Ahmed, Rehab M Elgharabawy, Amal H Al-Najjar
Mild to severe forms of nervous system damage were exhibited by approximately 60-70% of diabetics. It is important to understand the association between type 2 diabetes mellitus and Alzheimer's disease. The aim of the present work is to understand the bidirectional association between type 2 diabetes and Alzheimer's disease pathogenesis, that was monitored by glycaemic status, lipid profile, amyloid beta 40 and 42 (Aβ40 and Aβ42), C-reactive protein, total creatine kinase, total lactate dehydrogenase, D-dimer and magnesium measurements, to assess the association between theses biochemical markers and each other, to estimate the possibility of utilizing the amyloid beta as biochemical marker of T2D in Alzheimer's patients, and to evaluate the effect of piracetam and memantine drugs on diabetes mellitus...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28533226/igf1r-protein-expression-is-not-associated-with-differential-benefit-to-concurrent-trastuzumab-in-early-stage-her2-breast-cancer-from-the-north-central-cancer-treatment-group-alliance-adjuvant-trastuzumab-trial-n9831
#5
Monica M Reinholz, Beiyun Chen, Amylou C Dueck, Kathleen Tenner, Karla Ballman, Darren Riehle, Robert B Jenkins, Xochiquetzal J Geiger, Ann E McCullough, Edith A Perez
Background: Preclinical evidence indicates that increased insulin-like growth factor receptor-1 (IGF1R) signaling interferes with the action of trastuzumab suggesting a possible mechanism of trastuzumab resistance. Thus, we evaluated IGF1R prevalence, relationship with demographic data, and association with disease-free survival (DFS) of patients randomized to chemotherapy alone (Arm A) or chemotherapy with sequential (Arm B) or concurrent trastuzumab (Arm C) in the prospective phase III HER2(+) adjuvant N9831 trial...
May 22, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28532220/the-adipokine-tartrate-resistant-acid-phosphatase-5a-in-serum-correlates-to-adipose-tissue-expansion-in-obesity
#6
Christina Patlaka, Laia Mira Pascual, Staffan Paulie, Anni-Frid Henriksson, Peter Arner, Pernilla Lång, Göran Andersson
PURPOSE: Tartrate resistant acid phosphatase (TRAP) exists as two isoforms, 5a and 5b. TRAP 5a is elevated in adipose tissue of obese women, interacts with pre-adipocytes and is linked to insulin-sensitive hyperplastic obesity when overexpressed in mice. The aim of this study was to investigate the relation between serum TRAP 5a, adiposity indices and metabolic syndrome risk markers in lean and obese women, using a newly developed TRAP 5a-specific ELISA. MATERIALS AND METHODS: A TRAP 5a sandwich ELISA was optimized using TRAP 5a-specific monoclonal antibodies and tested in sera of healthy males...
May 22, 2017: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/28531305/impact-of-age-and-antibody-type-on-progression-from-single-to-multiple-autoantibodies-in-type-1-diabetes-relatives
#7
Emanuele Bosi, David C Boulware, Dorothy J Becker, Jane H Buckner, Susan Geyer, Peter A Gottlieb, Courtney Henderson, Amanda Kinderman, Jay M Sosenko, Andrea K Steck, Polly J Bingley
Context: Islet autoantibodies are markers of type 1 diabetes and an increase in number of autoantibodies detected during the preclinical phase is predictive of progression to overt disease. Objective: To refine the impact of age in relation to islet antibody type on the progression from single to multiple autoantibodies in relatives of people with type 1 diabetes. Research design and methods: We examined 994 relatives with normal glucose tolerance and positive for a single autoantibody, followed prospectively in the TrialNet Pathway to Prevention...
May 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28528684/clinical-studies-in-humans-targeting-the-various-components-of-the-igf-system-show-lack-of-efficacy-in-the-treatment-of-cancer
#8
REVIEW
Anastassios Philippou, Panagiotis F Christopoulos, Dr Michael Koutsilieris
The insulin-like growth factors (IGFs) system regulates cell growth, differentiation and energy metabolism and plays crucial role in the regulation of key aspects of tumor biology, such as cancer cell growth, survival, transformation and invasion. The current focus for cancer therapeutic approaches have shifted from the conventional treatments towards the targeted therapies and the IGF system has gained a great interest as anti-cancer therapy. The proliferative, anti-apoptotic and transformation effects of IGFs are mainly triggered by the ligation of the type I IGF receptor (IGF-IR)...
April 2017: Mutation Research
https://www.readbyqxmd.com/read/28526919/antibodies-to-post-translationally-modified-insulin-as-a-novel-biomarker-for-prediction-of-type-1-diabetes-in-children
#9
Rocky Strollo, Chiara Vinci, Nicola Napoli, Paolo Pozzilli, Johnny Ludvigsson, Ahuva Nissim
AIMS/HYPOTHESIS: We have shown that autoimmunity to insulin in type 1 diabetes may result from neoepitopes induced by oxidative post-translational modifications (oxPTM). Antibodies specific to oxPTM-insulin (oxPTM-INS-Ab) are present in most newly diagnosed individuals with type 1 diabetes and are more common than autoantibodies to native insulin. In this study, we investigated whether oxPTM-INS-Ab are present before clinical onset of type 1 diabetes, and evaluated the ability of oxPTM-INS-Ab to identify children progressing to type 1 diabetes...
May 20, 2017: Diabetologia
https://www.readbyqxmd.com/read/28525853/photoelectrochemical-sensitive-detection-of-insulin-based-on-cds-polydopamine-co-sensitized-wo3-nanorod-and-signal-amplification-of-carbon-nanotubes-polydopamine
#10
Rongyu Wang, Hongmin Ma, Yong Zhang, Qi Wang, Zhongping Yang, Bin Du, Dan Wu, Qin Wei
An ultrasensitive photoelectrochemical sandwich immunosensor was designed for detection of insulin based on WO3/CdS/polydopamine (WO3/CdS/PDA) co-sensitized and PDA@carbon nanotubes (PDA@CNT) conjugates for signal amplification. The CdS nanoparticles were first deposited on the WO3 nanorods via sequential chemical bath deposition to form the WO3/CdS structure to enhance photocurrent. Then equipped with PDA to form the WO3/CdS/PDA photosensitive structure. The PDA was used not only to reduce the toxicity of CdS but also adsorb insulin primary antibodies (Ab1)...
May 13, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28525362/fgf21-receptor-agonists-an-emerging-therapeutic-class-for-obesity-related-diseases
#11
Junichiro Sonoda, Mark Z Chen, Amos Baruch
Fibroblast growth factor 21 (FGF21) analogs and FGF21 receptor agonists (FGF21RAs) that mimic FGF21 ligand activity constitute the new "FGF21-class" of anti-obesity and anti-diabetic molecules that improve insulin sensitivity, ameliorate hepatosteatosis and promote weight loss. The metabolic actions of FGF21-class proteins in obese mice are attributed to stimulation of brown fat thermogenesis and increased secretion of adiponectin. The therapeutic utility of this class of molecules is being actively investigated in clinical trials for the treatment of type 2 diabetes and non-alcoholic steatohepatitis (NASH)...
May 19, 2017: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/28521298/insulin-like-growth-factor-2-axis-supports-the-serum-independent-growth-of-malignant-rhabdoid-tumor-and-is-activated-by-microenvironment-stress
#12
Ting Li, Jin Wang, Pengfei Liu, Jiadong Chi, Han Yan, Lei Lei, Zexing Li, Bing Yang, Xi Wang
Malignant rhabdoid tumors (MRTs) are rare, lethal, pediatric tumors predominantly found in the kidney, brain and soft tissues. MRTs are driven by loss of tumor suppressor SNF5/INI1/SMARCB1/BAF47. The prognosis of MRT is poor using currently available treatments, so new treatment targets need to be identified to expand treatment options for patients experiencing chemotherapy resistance. The growth hormone insulin-like growth factor 2 (IGF2) signaling pathway is a promising target to overcome drug resistance in many cancers...
May 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28514308/emotional-exhaustion-induced-latent-autoimmune-diabetes-in-adults-in-a-young-lady-a-care-compliant-case-report
#13
Yin-Ling Chen, Yong-Chao Qiao, Xin-Nan Song, Wei Ling, Hai-Lu Zhao, Xiao-Xi Zhang
RATIONALE: Latent autoimmune diabetes in adults (LADA) refers to an autoimmune disorder characterized with detectable islets antibodies in the early diagnosis and increased autoimmune beta-cell failure progression. Notably, this kind of diabetes seems to be confused with other phenotypic diabetes. PATIENT CONCERNS: A young woman suffered an emotional exhaustion-induced LADA, showing asthenia, polydipsia, polyuria, and visible weight loss. The patient emotionally ended a 14-year romantic relationship, leading to the emotional flooding...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28507444/antibodies-against-glutamic-acid-decarboxylase-and-indices-of-insulin-resistance-and-insulin-secretion-in-nondiabetic-adults-a-cross-sectional-study
#14
Carlos O Mendivil, Freddy Jk Toloza, Maria L Ricardo-Silgado, Martha C Morales-Álvarez, Jose O Mantilla-Rivas, Jairo A Pinzón-Cortés, Hernán N Lemus
BACKGROUND: Autoimmunity against insulin-producing beta cells from pancreatic islets is a common phenomenon in type 1 diabetes and latent autoimmune diabetes in adults. Some reports have also related beta-cell autoimmunity to insulin resistance (IR) in type 2 diabetes. However, the extent to which autoimmunity against components of beta cells is present and relates to IR and insulin secretion in nondiabetic adults is uncertain. AIM: To explore the association between antibodies against glutamic acid decarboxylase (GADA), a major antigen from beta cells, and indices of whole-body IR and beta-cell capacity/insulin secretion in adults who do not have diabetes...
2017: Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy
https://www.readbyqxmd.com/read/28489277/pancreas-after-islet-pai-transplantation-in-non-uremic-type-1-diabetes-a-strategy-for-restoring-durable-insulin-independence
#15
S A Wisel, J M Gardner, G R Roll, J Harbell, C E Freise, S Feng, S M Kang, R Hirose, D B Kaufman, A Posselt, P G Stock
Islet transplantation offers a minimally-invasive approach for beta cell replacement in diabetic patients with hypoglycemic unawareness. Attempts at insulin independence may require multiple islet re-infusions from distinct donors, thus increasing the risk for allogeneic sensitization. Currently, solid organ pancreas transplant is the only remaining surgical option following failed islet transplantation in the US. However, the immunologic impact of repeated exposure to donor antigens on subsequent pancreas transplantation is unclear...
May 10, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28487437/hypoglycemic-effect-of-combined-ghrelin-and-glucagon-receptor-blockade
#16
Bharath K Mani, Aki Uchida, Young Lee, Sherri Osborne-Lawrence, Maureen J Charron, Roger H Unger, Eric D Berglund, Jeffrey M Zigman
Glucagon receptor (GcgR) blockade has been proposed as an alternative to insulin monotherapy for treating Type 1 diabetes mellitus since deletion or inhibition of GcgRs corrects hyperglycemia in diabetic models. The factors regulating glycemia in a setting devoid of insulin and glucagon function remain unclear, but may include the hormone ghrelin. Not only is ghrelin release controlled by glucose, but also ghrelin has many actions that can raise or reduce falls in blood glucose. Here, we tested the hypothesis that ghrelin rises to minimize hypoglycemia in the absence of glucagon function...
May 9, 2017: Diabetes
https://www.readbyqxmd.com/read/28479483/coffee-and-autoimmunity-more-than-a-mere-hot-beverage
#17
REVIEW
Kassem Sharif, Abdulla Watad, Nicola Luigi Bragazzi, Mohammad Adawi, Howard Amital, Yehuda Shoenfeld
Coffee is one of the world's most consumed beverage. In the last decades, coffee consumption has attracted a huge body of research due to its impact on health. Recent scientific evidences showed that coffee intake could be associated with decreased mortality from cardiovascular and neurological diseases, diabetes type II, as well as from endometrial and liver cancer, among others. In this review, on the basis of available data in the literature, we aimed to investigate the association between coffee intake and its influence on the immune system and the insurgence of the most relevant autoimmune diseases...
May 4, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28474159/fatty-acid-status-in-infancy-is-associated-with-the-risk-of-type-1-diabetes-associated-autoimmunity
#18
Sari Niinistö, Hanna-Mari Takkinen, Iris Erlund, Suvi Ahonen, Jorma Toppari, Jorma Ilonen, Riitta Veijola, Mikael Knip, Outi Vaarala, Suvi M Virtanen
AIMS/HYPOTHESIS: We investigated the association of early serum fatty acid composition with the risk of type 1 diabetes-associated autoimmunity. Our hypothesis was that fatty acid status during infancy is related to type 1 diabetes-associated autoimmunity and that long-chain n-3 fatty acids, in particular, are associated with decreased risk. METHODS: We performed a nested case-control analysis within the Finnish Type 1 Diabetes Prediction and Prevention Study birth cohort, carrying HLA-conferred susceptibility to type 1 diabetes (n = 7782)...
May 4, 2017: Diabetologia
https://www.readbyqxmd.com/read/28468775/targeting-insulin-receptor-in-breast-cancer-using-small-engineered-protein-scaffolds
#19
Jie Ying Chan, Benjamin J Hackel, Douglas Yee
Insulin receptor (InsR) and the type I insulin-like growth factor (IGF1R) are homologous receptors necessary for signal transduction by their cognate ligands insulin, insulin-like growth factor-I and -II (IGF-I and IGF-II). IGF1R monoclonal antibodies, intended to inhibit malignant phenotypic signaling, failed to show benefit in patients with endocrine-resistant tumors in phase III clinical trials. Our previous work showed that in tamoxifen-resistant cells IGF1R expression was lacking but InsR inhibition effectively blocked growth...
May 3, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28467880/teprotumumab-for-thyroid-associated-ophthalmopathy
#20
RANDOMIZED CONTROLLED TRIAL
Terry J Smith, George J Kahaly, Daniel G Ezra, James C Fleming, Roger A Dailey, Rosa A Tang, Gerald J Harris, Alessandro Antonelli, Mario Salvi, Robert A Goldberg, James W Gigantelli, Steven M Couch, Erin M Shriver, Brent R Hayek, Eric M Hink, Richard M Woodward, Kathleen Gabriel, Guido Magni, Raymond S Douglas
BACKGROUND: Thyroid-associated ophthalmopathy, a condition commonly associated with Graves' disease, remains inadequately treated. Current medical therapies, which primarily consist of glucocorticoids, have limited efficacy and present safety concerns. Inhibition of the insulin-like growth factor I receptor (IGF-IR) is a new therapeutic strategy to attenuate the underlying autoimmune pathogenesis of ophthalmopathy. METHODS: We conducted a multicenter, double-masked, randomized, placebo-controlled trial to determine the efficacy and safety of teprotumumab, a human monoclonal antibody inhibitor of IGF-IR, in patients with active, moderate-to-severe ophthalmopathy...
May 4, 2017: New England Journal of Medicine
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