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Insulin antibodies

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https://www.readbyqxmd.com/read/28101570/inhibition-of-tlr4-protects-rat-islets-against-lipopolysaccharide-induced-dysfunction
#1
Xiao Wang, Qin Min Ge, Fan Bian, Yan Dong, Chun Mei Huang
Oxidative stress leads to dysfunction in pancreatic cells, causing a reduction in insulin secretion following exposure to glucose. Toll-like receptor 4 (TLR4) may be activated by exposure to lipopolysaccharide (LPS) stress. TLR4 may mediate the initiation of inflammatory and immune defense responses; however, the importance of the LPS/TLR4 interaction in apoptosis induced by oxidative stress in pancreatic β cells remains to be elucidated. The present study aimed to investigate the importance of TLR4 during LPS‑induced oxidative stress, apoptosis and dysfunction of insulin secretion in isolated islets of rats...
February 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28097474/igf-1r-regulates-the-extracellular-level-of-active-mmp-2-pathological-neovascularization-and-functionality-in-retinas-of-oir-mouse-model
#2
Valeria E Lorenc, Paula V Subirada Caldarone, María C Paz, Darío G Ferrer, José D Luna, Gustavo A Chiabrando, María C Sánchez
In ischemic proliferative diseases such as retinopathies, persistent hypoxia leads to the release of numerous neovascular factors that participate in the formation of abnormal vessels and eventually cause blindness. The upregulation and activation of metalloproteinases (MMP-2 and MMP-9) represent a final common pathway in this process. Although many regulators of the neovascular process have been identified, the complete role of the insulin-like growth factor 1 (IGF-1) and its receptor (IGF-1R) appears to be significantly more complex...
January 17, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28094469/immunohistochemical-assessment-of-glucagon-like-peptide-1-receptor-glp-1r-expression-in-the-pancreas-of-patients-with-type-2-diabetes
#3
Rikke Kaae Kirk, Charles Pyke, Matthias G von Herrath, Jane Preuss Hasselby, Lars Pedersen, Pia Gottrup Mortensen, Lotte Bjerre Knudsen, Ken Coppieters
Glucagon-like peptide-1 (GLP-1) is an incretin hormone which stimulates insulin release and inhibits glucagon secretion from the pancreas in a glucose-dependent manner. Incretin-based therapies, consisting of GLP-1 receptor (GLP-1R) agonists and dipeptidyl peptidase-4 (DPP-4) inhibitors, are used for the treatment of T2D. Immunohistochemical studies for GLP-1R expression have previously been hampered by the use of unspecific polyclonal antibodies. This study used a new monoclonal antibody to assess GLP-1R expression in pancreatic tissue from 23 patients with T2D, including 7 with a DPP-4 inhibitor and 1 with a GLP-1R agonist treatment history...
January 17, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28093994/viral-infection-and-obesity-current-status-and-future-prospective
#4
Sayed Sartaj Sohrab, Mohammad Amjad Kamal, Richard L Atkinson, Maha M Alawi, Esam I Azhar
The association of pathogenic viruses with obesity has now been well-known in both human and animals. Globally, human obesity has become a serious problem leading to the emergence of multiple life-threatening diseases. Adenoviruses contribute a significant role in the induction of obesity by affecting various pathways. Due to impaired immunity, obese individuals are more prone to nosocomial infections leading to complications of obesity. In contrast, several other important factors contributing to human obesity are known...
January 16, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28067796/combined-effects-of-androgen-and-growth-hormone-on-osteoblast-marker-expression-in-mouse-c2c12-and-mc3t3-e1-cells-induced-by-bone-morphogenetic-protein
#5
Kosuke Kimura, Tomohiro Terasaka, Nahoko Iwata, Takayuki Katsuyama, Motoshi Komatsubara, Ryota Nagao, Kenichi Inagaki, Fumio Otsuka
Osteoblasts undergo differentiation in response to various factors, including growth factors and steroids. Bone mass is diminished in androgen- and/or growth hormone (GH)-deficient patients. However the functional relationship between androgen and GH, and their combined effects on bone metabolism, remains unclear. Here we investigated the mutual effects of androgen and GH on osteoblastic marker expression using mouse myoblastic C2C12 and osteoblast-like MC3T3-E1 cells. Combined treatment with dihydrotestosterone (DHT) and GH enhanced BMP-2-induced expression of Runx2, ALP, and osteocalcin mRNA, compared with the individual treatments in C2C12 cells...
January 5, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28055299/guiding-bispecific-monovalent-antibody-formation-through-proteolysis-of-igg1-single-chain
#6
Nazzareno Dimasi, Ryan Fleming, Kris F Sachsenmeier, Binyam Bezabeh, Carl Hay, Jincheng Wu, Erin Sult, Saravanan Rajan, Li Zhuang, Peter Cariuk, Andrew Buchanan, Michael A Bowen, Herren Wu, Changshou Gao
We developed an IgG1 domain-tethering approach to guide the correct assembly of two light and two heavy chains, derived from two different antibodies, to form bispecific monovalent antibodies in IgG1 format. We show here that assembling two different light and heavy chains by sequentially connecting them with protease-cleavable polypeptide linkers results in the generation of monovalent bispecific antibodies that have IgG1 sequence, structure and functional properties. This approach was used to generate a bispecific monovalent antibody targeting the epidermal growth factor receptor and the type I insulin-like growth factor receptor that: 1) can be produced and purified using standard IgG1 techniques; 2) exhibits stability and structural features comparable to IgG1; 3) binds both targets simultaneously; and 4) has potent anti-tumor activity...
January 5, 2017: MAbs
https://www.readbyqxmd.com/read/28044235/association-of-h-pylori-infection-with-chronic-kidney-disease-among-chinese-adults
#7
Xianglei Kong, Dayu Xu, Feng Li, Xiaojing Ma, Hong Su, Dongmei Xu
BACKGROUND: Some studies have suggested that Helicobacter pylori (H. Pylori) infection was associated with insulin resistance and metabolic syndrome, which may increase the risk of chronic kidney disease (CKD). But there is no conclusive evidence regarding the association between H. Pylori infection and CKD. To help clarify this, we conducted the cross-sectional study to investigate the association of H. pylori infection with CKD among Chinese adults. METHODS: A total of 22,044 adults aged 48...
January 2, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28034759/targeting-p-selectin-glycoprotein-ligand-1-p-selectin-interactions-as-a-novel-therapy-for-metabolic-syndrome
#8
REVIEW
Madhukar S Patel, David Miranda-Nieves, Jiaxuan Chen, Carolyn A Haller, Elliot L Chaikof
Obesity-induced insulin resistance and metabolic syndrome continue to pose an important public health challenge worldwide as they significantly increase the risk of type 2 diabetes and atherosclerotic cardiovascular disease. Advances in the pathophysiologic understanding of this process has identified that chronic inflammation plays a pivotal role. In this regard, given that both animal models and human studies have demonstrated that the interaction of P-selectin glycoprotein ligand-1 (PSGL-1) with P-selectin is not only critical for normal immune response but also is upregulated in the setting of metabolic syndrome, PSGL-1/P-selectin interactions provide a novel target for preventing and treating resultant disease...
December 9, 2016: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28034286/altered-prolylcarboxypeptidase-expression-and-function-in-response-to-different-risk-factors-of-diabetes
#9
Tahmineh Tabrizian, Lillie Floyd, Zia Shariat-Madar
BACKGROUND: Prolylcarboxypeptidase (PRCP, EC:3.4.16.2) is a cardioprotective protease. Plasma PRCP levels are elevated in type 2 diabetes (T2D) mellitus and cardiovascular diseases. OBJECTIVE: Since diabetic cardiomyopathy is a late complication of uncontrolled diabetes, we tested the hypothesis that glucose and free fatty acid related risk factors for T2D mellitus and cardiovascular disease may reduce the cardioprotective property of PRCP. METHOD: 0 We examined the effects of glucose, saturated fatty acids, and unsaturated fatty acids on PRCP expression in cultured H9c2 cells as an in-vitro model for pharmacological studies...
December 29, 2016: Cardiovascular & Hematological Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28031845/dengue-shock-syndrome
#10
Sreenivasa Rao Sudulagunta, Mahesh Babu Sodalagunta, Mona Sepehrar, Shiva Kumar Bangalore Raja, Aravinda Settikere Nataraju, Mounica Kumbhat, Deepak Sathyanarayana, Siddharth Gummadi, Hemanth Kumar Burra
Dengue fever is a mosquito-borne arthropod-borne viral (arboviral) tropical disease in humans affecting 50-528 million people worldwide. The acute abdominal complications of dengue fever are acute appendicitis, acute pancreatitis, acute acalculous cholecystitis and non-specific peritonitis. Acute pancreatitis with new onset diabetes in dengue shock syndrome (DSS) is very rarely reported. We describe a case of 30-year-old man admitted in intensive care unit and was diagnosed with DSS with RT-PCR, NS1 antigen and dengue IgM antibody being positive...
November 2016: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/28017142/gliclazide-induced-insulin-autoimmune-syndrome-a-rare-case-report-and-review-on-literature
#11
Xiu Feng, Lu Yuan, Hu Yun, Yunqing Zhu, Fan Yang, Lanlan Jiang, Rengna Yan, Yong Luo, Enhui Zhao, Chenxiao Liu, Ying Wang, Qi Li, Xin Cao, Qian Li, Jianhua Ma
Insulin Autoimmune Syndrome (IAS) is a rare condition characterized by the combination of recurrent severely spontaneous hypoglycemia without evidence of exogenous insulin administration, high concentration of total serum insulin, and the presence of a high titer of insulin autoantibody (IAA)[ ]. But now we describe a case with IAS caused by gliclazide and hardly occuring hypoglycemia. A 70-year-old man with type 2 diabetes presented to our department with poor glycemic control without evidence of hypoglycemia, but the levels of serum insulin and IAA were very high...
December 23, 2016: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/27987211/inhibiting-thyrotropin-insulin-like-growth-factor-1-receptor-crosstalk-to-treat-graves-ophthalmopathy-studies-in-orbital-fibroblasts-in-vitro
#12
Robert F Place, Christine C Krieger, Susanne Neumann, Marvin C Gershengorn
BACKGROUND AND PURPOSE: Crosstalk between the thyrotropin (TSH) receptor (TSHR) and the insulin-like growth factor 1 receptor (IGF-1R) initiated by activation of TSHR may play a prominent role in the development of Graves' ophthalmopathy (GO). Specifically, we have shown that TSHR activation alone is sufficient to stimulate hyaluronan (HA) secretion, a major component of GO, through both IGF-1R-dependent and -independent pathways. Although an anti-IGF-1R antibody is in clinical trial, its effectiveness hinges on the relative importance of IGF-1R versus TSHR signaling in GO pathogenesis...
December 17, 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27983910/active-subjects-with-autoimmune-type-1-diabetes-have-better-metabolic-profiles-than-sedentary-controls
#13
M Adamo, R Codella, F Casiraghi, A Ferrulli, C Macrì, E Bazzigaluppi, I Terruzzi, L Inverardi, C Ricordi, L Luzi
<p>Previous studies in humans with type 1 diabetes (T1D) and in non-obese diabetic mice have investigated the beneficial immunomodulatory potential of aerobic physical activity. Performing high volume of aerobic exercise may favorably regulate autoimmunity in diabetes. We tested whether increased physical activity is a self-sufficient positive factor in T1D subjects.</p><p>During a 3-month observational period, active (6M; 40.5±6.1 years; BMI 24.5±2.1) and sedentary (4M, 3F; 35.9±8.9 years; BMI 25...
20, 2016: Cell Transplantation
https://www.readbyqxmd.com/read/27941065/factorial-effects-of-evolocumab-and-atorvastatin-on-lipoprotein-metabolism
#14
Gerald F Watts, Dick C Chan, Ricardo E Dent, Ransi Somaratne, Scott M Wasserman, Rob Scott, Sally Burrows, Peter Hugh R Barrett
BACKGROUND: -Monoclonal antibodies (mAbs) against proprotein convertase subtilisin kexin type 9 (PCSK9), such as evolocumab, lower plasma low-density lipoprotein (LDL)-cholesterol concentrations. Evolocumab is under investigation for its effects on cardiovascular outcomes in statin-treated, high-risk patients. The mechanism of action of PCSK9 mAbs on lipoprotein metabolism remains to be fully evaluated. Stable isotope tracer kinetics can effectively elucidate the mode of action of new lipid regulating pharmacotherapies...
December 9, 2016: Circulation
https://www.readbyqxmd.com/read/27933175/hyperinsulinemic-hypoglycemia-associated-with-insulin-antibodies-caused-by-exogenous-insulin-analog
#15
Chih-Ting Su, Yi-Chun Lin
: Insulin antibodies (IA) associated with exogenous insulin administration seldom caused hypoglycemia and had different characteristics from insulin autoantibodies (IAA) found in insulin autoimmune syndrome (IAS), which was first described by Dr Hirata in 1970. The characteristic of IAS is the presence of insulin-binding autoantibodies and related fasting or late postprandial hypoglycemia. Here, we report a patient with type 1 diabetes mellitus under insulin glargine and insulin aspart treatment who developed recurrent spontaneous post-absorptive hyperinsulinemic hypoglycemia with the cause probably being insulin antibodies induced by exogenous injected insulin...
2016: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/27932140/influence-of-donor-and-recipient-ages-in-survival-of-simultaneous-pancreas-kidney-transplantation
#16
A J Arenas-Bonilla, J P Campos-Hernández, J Carrasco-Valiente, F J Márquez-López, J M Ruiz-García, A Sánchez-Gónzalez, J J Salamanca-Bustos, J C Regueiro-López, M D Navarro-Cabello, M J Requena-Tapia
INTRODUCTION: Simultaneous pancreas-kidney transplantation (SPKT) is a well treatment for patients with insulin-dependent diabetes and end-stage renal disease. Donor age is a barrier to the acceptance of organs. Age matching has been extensively studied in kidney transplantation; however, there are no studies in graft survival after SPKT. We aimed to study the combined influence of the ages of the donors and recipients in graft survival after SPKT. MATERIAL AND METHODS: Donors and recipients are classified as younger (age <40 years) or older (age ≥40 years)...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27931513/immunogenicity-of-anti-hla-antibodies-in-pancreas-and-islet-transplantation
#17
Benjamin Chaigne, Kirsten Geneugelijk, Benot Bdat, Mohamed Alibashe Ahmed, Gideon Hnger, Sophie de Seigneux, Sandrine Demuylder-Mischler, Thierry Berney, Eric Spierings, Sylvie Ferrari-Lacraz, Jean Villard
The aim of the current study was to characterize the anti-HLA antibodies before and after pancreatic islet or pancreas transplantation. We assessed the risk of anti-donor-specific antibody (DSA) sensitization in a single-center, retrospective clinical study at Geneva University Hospital. Data regarding clinical characteristics, graft outcome, HLA mismatch, donor HLA immunogenicity, and anti-HLA antibody characteristics were collected. Between January 2008 and July 2014, 18 patients received islet transplants, and 26 patients received a pancreas transplant...
November 2016: Cell Transplantation
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
#18
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/27913012/hyperglycemic-high-anion-gap-metabolic-acidosis-in-patients-receiving-sglt-2-inhibitors-for-diabetes-management
#19
Juliette Sandifer Kum-Nji, Aidar R Gosmanov, Helmut Steinberg, Samuel Dagogo-Jack
Sodium-glucose cotransporter-2 inhibitors (SGLT-2i) are a class of antidiabetic medications that improve glycemic control via inhibiting the reabsorption of filtered glucose and are approved for use in type 2 diabetes (T2DM). These drugs have recently been associated with euglycemic diabetic ketoacidosis (DKA). An increasing number of cases of SGLT-2i-associated DKA have occurred in patients with T2DM. Herein, we describe five episodes of hyperglycemic DKA in four type 2 diabetes patients receiving SGLT-2i therapy...
November 9, 2016: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/27905891/erratum-to-insulin-like-growth-factor-1-receptor-mediated-tyrosine-845-phosphorylation-of-epidermal-growth-factor-receptor-in-the-presence-of-monoclonal-antibody-cetuximab
#20
Gopal Iyer, James Price, Shay Bourgeois, Eric Armstrong, Shyhmin Huang, Paul M Harari
No abstract text is available yet for this article.
December 1, 2016: BMC Cancer
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