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C-peptide

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https://www.readbyqxmd.com/read/28740392/cholecalciferol-improves-glycemic-control-in-type-2-diabetic-patients-a-6-month-prospective-interventional-study
#1
Aml Mohamed Nada, Dalia A Shaheen
BACKGROUND AND PURPOSE: To investigate the effects of vitamin D supplementation on glucose homeostasis and lipid profile in type 2 diabetic patients who have vitamin D deficiency. PATIENTS AND METHODS: One hundred twenty-five type 2 diabetic patients taking oral hypoglycemic agents as mono- or combination therapy were recruited from the diabetes and endocrinology clinic. Subject demographics, duration of diabetes, antidiabetic medication, body mass index (BMI), pulse, and blood pressure (BP) were assessed...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28737953/metabolic-factors-and-oxidative-stress-in-osteoarthritis-a-case-control-study
#2
Kaspar Tootsi, Aare Märtson, Jaak Kals, Kaido Paapstel, Mihkel Zilmer
Previous studies suggest that metabolic disturbances might be involved in the development of osteoarthritis (OA). Associations have been found between the individual components of metabolic syndrome (MetS) and OA. MetS has been associated with increased oxidative stress (OxS). The study aimed to clarify the role of MetS components in OA and to evaluate the levels of OxS in OA patients and in age-matched controls. Fifty-five patients with end-stage OA (age 63 ± 7 years) prior to hip or knee joint replacement surgery and 55 age-, gender- and body mass index matched controls (61 ± 8 years) were enrolled in the study...
July 24, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28737146/autoimmune-hypoglycemia-in-type-1-diabetes-mellitus
#3
Jayakumar Ambigapathy, Jayaprakash Sahoo, Sadishkumar Kamalanathan
BACKGROUND: Antibodies against exogenous insulin are common in type 1 diabetes mellitus patients. They can cause hypoglycemia, albeit uncommonly. CASE CHARACTERISTICS: A 14-year-old girl with type 1 diabetes mellitus presented with recurrent hypoglycemia. OUTCOME: High insulin, low C-peptide and raised insulin antibody levels documented during hypoglycemia. Plasmapheresis led to remission of hypoglycemia. MESSAGE: Antibodies to exogenous insulin should be considered as a cause of recurrent refractory hypoglycemia in type 1 diabetes mellitus patients...
July 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28733034/decreased-expression-of-mir-150-mir146a-and-mir424-in-type-1-diabetic-patients-association-with-ongoing-islet-autoimmunity
#4
Guofeng Wang, Yong Gu, Ning Xu, Mei Zhang, Tao Yang
BACKGROUND: Recent studies revealed altered miRNAs profiling in patients with autoimmune diseases, including type 1 diabetes (T1D). Here, we conducted an observational study and examined the expression levels of these five miRNAs (miR-150,miR-146a,miR-424,miR-181a and miR-142-3P) in peripheral blood mononuclear cells (PBMCs) from T1D patients. METHODS: PBMCs were obtained from T1D cohorts (n = 78), type 2 diabetes (T2D, n = 46) and healthy control subjects (n = 56)...
July 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28731212/cross-validation-of-commercial-enzyme-linked-immunosorbent-assay-and-radioimmunoassay-for-porcine-c-peptide-concentration-measurements-in-non-human-primate-serum
#5
Sarah C Gresch, Lucas A Mutch, Jody L Janecek, Rebecca L Hegstad-Davies, Melanie L Graham
BACKGROUND: C-peptide concentration is widely used as a marker of insulin secretion and is especially relevant in evaluating islet graft function following transplantation, because its measurement is not confounded by the presence of exogenous insulin. To address the shortage of human islet donors, the use of porcine islets has been proposed as a possible solution and the stringent pig-to-non-human primate (NHP) model is often the most relevant for pre-clinical evaluation of the potential for diabetes reversal resulting from an islet xenograft...
July 21, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28728559/effect-of-insulin-therapy-and-dietary-adjustments-on-safety-and-performance-during-simulated-soccer-tests-in-people-with-type-1-diabetes-study-protocol-for-a-randomized-controlled-trial
#6
Javier Calvo-Marín, Gabriel Torrealba-Acosta, Matthew Campbell, Jesse Gaboury, Ajmol Ali, Chih Hao Chen-Ku
BACKGROUND: Despite the reduction in glycemic derangement in patients with type 1 diabetes mellitus (T1D) through dietary and therapeutic adjustments implemented before, during and after continuous exercise, evidence for its effectiveness with intermittent forms of exercise, such as soccer, is still lacking. METHODS/DESIGN: We designed a study protocol for a randomized, crossover, double-blinded, controlled trial, for the evaluation of the effect that a strategy of dietary and therapeutic modifications may have on safety and performance of persons with T1D in soccer training sessions and cognitive testing...
July 20, 2017: Trials
https://www.readbyqxmd.com/read/28727675/type-1-diabetes-mellitus-caused-by-treatment-with-low-dose-interferon-%C3%AE-in-a-melanoma-patient
#7
Daniel Sossau, Lukas Kofler, Thomas Eigentler
Interferon-α (INF-α) is used as an adjuvant treatment for high-risk cutaneous melanoma. It has a large variety of potentially severe and irreversible side effects and can contribute toward the development of autoimmune disease. We report a case of a 59-year-old woman who developed type 1 diabetes following the use of low-dose IFN-α for the adjuvant treatment of stage IIB melanoma. Fifteen months after initiating IFN-α, she presented with blood glucose of 1126 mg/dl, hyponatremia, and microalbuminuria...
July 19, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28726377/a-novel-targeted-mass-spectrometry-approach-enabled-discov-ery-of-o-glycosylated-insulin-and-related-signaling-peptides-in-mouse-and-human-pancreatic-islets
#8
Qing Yu, Alejandra Canales, Matthew S Glover, Rahul Das, Xudong Shi, Yang Liu, Mark P Keller, Alan D Attie, Lingjun Li
O-linked glycosylation often involves the covalent attachment of sugar moieties to the hydroxyl group of serine or threonine on proteins/peptides. Despite growing interest in glycoproteins, little attention has been directed to glycosylated signaling peptides, largely due to lack of enabling analytical tools. Here we explore the occurrence of naturally O-linked glycosylation on the signaling peptides extracted from mouse and human pancreatic islets using mass spectrometry (MS). A novel targeted MS-based method is developed to increase the likelihood of capturing these modified signaling peptides and to provide improved sequence coverage and accurate glycosite localization, enabling the first large-scale discovery of O-glycosylation on signaling peptides...
July 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28720417/application-of-plasma-levels-of-olanzapine-and-n-desmethyl-olanzapine-to-monitor-metabolic-parameters-in-patients-with-schizophrenia
#9
Mong-Liang Lu, Chun-Hsin Chen, Pei-Ting Kuo, Chia-Hui Lin, Tzu-Hua Wu
Metabolic disturbance is a common side effect of olanzapine (OLZ); however, the relationships between plasma OLZ concentration (COLZ) and metabolic disturbance remain unclear. Our previous study revealed that COLZ≧22.77ng/mL was a positive predictor of therapeutic efficacy in patients with schizophrenia. This study aimed to investigate the roles of OLZ or N-desmethyl-olanzapine (DMO) in metabolic outcomes among OLZ-treated patients with schizophrenia. The metabolic syndrome (MS) was diagnosed based on the modified the National Cholesterol Education Program Adult Treatment Panel III criteria for Asians...
July 15, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28719834/the-exon3-deleted-growth-hormone-receptor-gene-polymorphism-d3-ghr-is-associated-with-insulin-and-spontaneous-growth-in-short-sga-children-nesgas
#10
Mathilde Gersel Wegmann, Ajay Thankamony, Edna Roche, Hilary Hoey, Jeremy Kirk, Guftar Shaikh, Sten-A Ivarsson, Olle Söder, David B Dunger, Anders Juul, Rikke Beck Jensen
OBJECTIVE: The effect of a common polymorphism in the Growth Hormone (GH) receptor (d3-GHR) gene on growth, metabolism and body composition was examined in short children born small for gestational age (SGA) on GH treatment. DESIGN: In 96 prepubertal, short SGA children treated with high-dose GH (67μg/kg/day) in the NESGAS study, insulin sensitivity (IS), insulin secretion and disposition index (DI) were determined during the first year of treatment. Body composition was analysed by DXA...
July 12, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28719155/antipsychotic-treatment-is-associated-with-inflammatory-and-metabolic-biomarkers-alterations-among-first-episode-psychosis-patients-a-7-month-follow-up-study
#11
Roman Balõtšev, Liina Haring, Kati Koido, Vambola Leping, Kärt Kriisa, Mihkel Zilmer, Veiko Vasar, Anneli Piir, Aavo Lang, Eero Vasar
AIM: Second-generation antipsychotics are commonly used to treat schizophrenia, but may cause metabolic syndrome (MetS) in a subset of patients. The mechanisms of antipsychotic-related metabolic changes remain to be established, especially in first-episode psychosis (FEP) patients. METHODS: In the present study, we used a chip technology to measure metabolic (C-peptide, insulin, leptin, adiponectin and resistin) and inflammatory biomarkers (ferritin, interleukin-6, interleukin-1α, tumour necrosis factor-α and plasminogen activator inhibitor-1) in the serum samples of a population of FEP patients before and after 7 months of antipsychotic drug treatment, compared to control subjects (CS)...
July 18, 2017: Early Intervention in Psychiatry
https://www.readbyqxmd.com/read/28711555/diabetes-in-the-older-patient-a-role-for-c-peptide
#12
John A D'Elia, Larry A Weinrauch
No abstract text is available yet for this article.
July 12, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28710307/is-it-safe-to-acutely-discontinue-insulin-therapy-in-patients-with-chronic-hyperglycaemia-starting-glp-1r-agonists
#13
Julie Omolola Okiro, Catherine Mc Hugh, Abuelmagd Abdalla
We report two patients with chronic hyperglycaemia secondary to type 2 diabetes who developed severe vomiting on d. The first patient was diagnosed with a mixed picture of diabetic ketoacidosis (DKA) and hyperosmolar hyperglycaemic state (HHS) and the second, with DKA. They were on insulin therapy which was discontinued on commencing d because of inefficacy and weight gain. The HHS patient developed dehydration secondary to vomiting and had lactic acidosis but no other precipitant could be found in either case...
July 14, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28710139/hepatic-but-not-extra-hepatic-insulin-clearance-is-lower-in-african-american-than-in-european-american-women
#14
Francesca Piccinini, David C Polidori, Barbara A Gower, Richard N Bergman
African Americans (AA) tend to have higher plasma insulin concentrations than European Americans (EA); the increased insulin concentrations have been attributed to increased secretion and/or decreased insulin clearance by liver or other tissues. This work aims to characterize the contributions of hepatic versus extra-hepatic insulin degradation related to ethnic differences between AA versus EA. Using a recently-developed mathematical model employing insulin and C-peptide measurements from the insulin-modified frequently-sampled intravenous glucose tolerance test (FSIGT), we estimated hepatic vs...
July 14, 2017: Diabetes
https://www.readbyqxmd.com/read/28704124/%C3%AE-cell-function-and-insulin-resistance-in-lean-cases-with-polycystic-ovary-syndrome
#15
Arunkumar R Pande, Ashwani Kumar Guleria, Sudhanshu Dev Singh, Manoj Shukla, Preeti Dabadghao
Obesity is a major factor in development of insulin resistance (IR) and metabolic features in polycystic ovary syndrome (PCOS) patients. Nearly two-thirds patients with PCOS (30 of 37 confirmed cases of PCOS) in our previous community based study were lean, in contrast to Caucasians. Metabolic parameters including IR and β cell function have not been characterized well in this group of lean PCOS. To study the metabolic features including IR and β cell function in lean PCOS patients, 53 patients with BMI, <23 kg/m(2) were compared with 71 obese PCOS and 45 age and body mass index matched controls...
July 13, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28701371/population-based-assessment-of-a-biomarker-based-screening-pathway-to-aid-diagnosis-of-monogenic-diabetes-in-young-onset-patients
#16
Beverley M Shields, Maggie Shepherd, Michelle Hudson, Timothy J McDonald, Kevin Colclough, Jaime Peters, Bridget Knight, Chris Hyde, Sian Ellard, Ewan R Pearson, Andrew T Hattersley
OBJECTIVE: Monogenic diabetes, a young-onset form of diabetes, is often misdiagnosed as type 1 diabetes, resulting in unnecessary treatment with insulin. A screening approach for monogenic diabetes is needed to accurately select suitable patients for expensive diagnostic genetic testing. We used C-peptide and islet autoantibodies, highly sensitive and specific biomarkers for discriminating type 1 from non-type 1 diabetes, in a biomarker screening pathway for monogenic diabetes. RESEARCH DESIGN AND METHODS: We studied patients diagnosed aged 30 years or younger, currently younger than 50 years, in two U...
July 12, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28698280/glycemic-control-after-metabolic-surgery-a-granger-causality-and-graph-analysis
#17
Elena Previti, Serenella Salinari, Alessandro Bertuzzi, Esmeralda Capristo, Stefan Bornstein, Geltrude Mingrone
To examine the contribution of Non-Esterified Fatty-Acids (NEFA) and incretin to insulin-resistance and diabetes amelioration after malabsorptive metabolic-surgery that dramatically reduces circulating NEFA. In fact, NEFA infusion reduces glucose-stimulated insulin secretion and high-fat diets predict diabetes development. Six healthy-controls, 11 obese and 10 Type-2-Diabetic (T2D) subjects were studied before and 1 month after Bilio-Pancreatic Diversion (BPD). Twenty-four hours plasma glucose, NEFA, insulin, C-peptide, glucagon-like peptide-1 (GLP1) and gastric-inhibitory-polypeptide (GIP) time courses were obtained and analyzed by Granger causality and graph analyses...
July 11, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28696261/complex-interplay-of-kinetic-factors-governs-the-synergistic-properties-of-hiv-1-entry-inhibitors
#18
Koree W Ahn, Michael J Root
The homotrimeric HIV-1 envelope glycoprotein (Env) undergoes receptor-triggered structural changes that mediate viral entry through membrane fusion. This process is inhibited by chemokine-receptor antagonists (CoRAs) that block Env-receptor interactions and by fusion inhibitors (FIs) that disrupt Env conformational transitions. Synergy between CoRAs and FIs has been attributed to a CoRA-dependent decrease in the rate of viral membrane fusion that extends the lifetime of the intermediate state targeted by FIs...
July 10, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28695457/the-role-of-laboratory-testing-in-differentiating-type-1-diabetes-from-type-2-diabetes-in-patients-undergoing-bariatric-surgery
#19
Scott J Pilla, Nisa M Maruthur, Michael A Schweitzer, Thomas H Magnuson, James J Potter, Jeanne M Clark, Clare J Lee
BACKGROUND: It may be difficult to distinguish between adults with type 1 diabetes and type 2 diabetes by clinical assessment. In patients undergoing bariatric surgery, it is critical to correctly classify diabetes subtype to prevent adverse perioperative outcomes including diabetic ketoacidosis. This study aimed to determine whether testing for C-peptide and islet cell antibodies during preoperative evaluation for bariatric surgery could improve the classification of type 1 versus type 2 diabetes compared to clinical assessment alone...
July 10, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28693499/conditions-of-gestation-childbirth-and-childhood-associated-with-c-peptide-in-young-adults-in-the-1982-birth-cohort-in-pelotas-rs-brazil
#20
Romildo Luiz Monteiro Andrade, Denise Petrucci Gigante, Isabel Oliveira de Oliveira, Bernardo Lessa Horta
BACKGROUND: The connecting peptide in insulin has been associated with cardiovascular risk and overall mortality in the adult population. However, its early determinants are unknown. Assess the association of exposures during pregnancy, delivery, and childhood with C-peptide among 22-23 years old individuals prospectively followed since birth, in a southern Brazilian city. METHODS: In 1982, all hospital births in the city were identified and those livebirths whose families lived in the urban area were evaluated (n = 5914)...
July 11, 2017: BMC Cardiovascular Disorders
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