Comparison of bicarbonate values from venous blood gas and chemistry panels measured at the time of diagnosis and resolution of diabetes ketoacidosis.

Objective: To determine if bicarbonate values from venous blood gas (VBG) and plasma chemistry samples provided agreement in determining the bicarbonate criteria for the diagnosis and/or resolution of diabetic ketoacidosis (DKA).

Methods: A retrospective chart review of data from patients admitted to a tertiary care hospital with a diagnosis of DKA over a four year period was performed. Paired bicarbonate values from a VBG and chemistry panel, if drawn within 60 minutes of each other, were compared.

PRESERVED PROINSULIN SECRETION IN LONG-STANDING TYPE 1 DIABETES.

Objective: Recent literature has reported preserved residual beta-cell function (C-peptide "microsecretion") in many individuals with long-standing type 1 diabetes (T1D). However, the concentrations of detectable insulin/C-peptide in the serum are usually very low, and beta-cell mass is typically negligible. Proinsulin is measurable in the early years after diagnosis, consistent with the presence of residual functioning beta cells.

Irisin and leptin concentrations in relation to obesity, and developing type 2 diabetes: A cross sectional and a prospective case-control study nested in the Normative Aging Study.

Objective: To investigate the associations between irisin and leptin levels in obesity and insulin resistance in a cross sectional study. To assess the potential role of irisin and leptin as a predictive marker of T2DM using a nested case-control study.

Methods: Both studies were designed within the longitudinal VA NAS cohort.

Differential Effects of Oral and Intravenous Lipid Administration on Key Molecules Related to Energy Homeostasis.

Context: The spectrum of lipid-induced changes in the secretion of hormones important in energy homeostasis has not yet been fully elucidated.

Objective: To identify potential incretin-like effects in response to lipid administration, we examined the short-term effect of iv vs oral lipids on key molecules regulating energy homeostasis. Design, Intervention, and Participants: After a 10-hour overnight fast, 26 subjects were randomized to receive an oral lipid load, a 10% iv lipid emulsion, a 20% iv lipid emulsion, or an iv saline infusion.

GLP-1 receptors exist in the parietal cortex, hypothalamus and medulla of human brains and the GLP-1 analogue liraglutide alters brain activity related to highly desirable food cues in individuals with diabetes: a crossover, randomised, placebo-controlled trial.

Aims/hypothesis: Liraglutide is a glucagon-like peptide-1 (GLP-1) analogue that has been demonstrated to successfully treat diabetes and promote weight loss. The mechanisms by which liraglutide confers weight loss remain to be fully clarified. Thus, we investigated whether GLP-1 receptors are expressed in human brains and whether liraglutide administration affects neural responses to food cues in diabetic individuals (primary outcome).

Intracellular leptin signaling following effective weight loss.

Aim: To investigate the effect of ex-vivo leptin treatment before and after weight loss on key-molecules of intracellular leptin signaling in peripheral blood mononuclear cells (PBMCs) of obese women.

Materials And Methods: Five healthy obese women underwent a 12-week medical nutrition treatment aiming at inducing 10% weight loss. Isolated PBMCs at baseline, and at weeks 8 and 12 were treated with increasing leptin doses (0, 25 and 75 ng/ml) for 30 min.

Chemerin levels as predictor of acute coronary events: a case-control study nested within the veterans affairs normative aging study.

Objective: Chemerin is a recently identified adipocytokine that has been positively correlated with the presence and severity of coronary artery disease (CAD). However, no studies have examined circulating chemerin levels as a predictor of acute coronary syndrome (ACS). The purpose of this study is to evaluate whether chemerin levels predict the onset of ACS.

Early life adversity is associated with elevated levels of circulating leptin, irisin, and decreased levels of adiponectin in midlife adults.

Context: Early-life adversity, defined as physical, emotional, or sexual abuse and neglect before 18 years of age, is associated with metabolic syndrome, obesity, and type 2 diabetes mellitus in adult life. However, the underlying mechanism is not fully understood, and whether adipomyokines are associated with early-life adversity independent of other factors such as body mass index, psychosocial risks, and health behaviors is not known.

Objectives: The objective of the study was to evaluate the association between early-life adversity and circulating the levels of the adipomyokines such as leptin, adiponectin, and irisin and the inflammatory marker, C-reactive protein (CRP).

Circulating irisin in relation to insulin resistance and the metabolic syndrome.

Context: Irisin, a recently identified hormone, has been proposed to regulate energy homeostasis and obesity in mice. Whether irisin levels are associated with risk of the metabolic syndrome (MetS), cardiometabolic variables, and cardiovascular disease (CVD) risk in humans remains unknown.

Objective: Our objective was to assess the associations between baseline serum irisin levels and MetS, cardiometabolic variables, and CVD risk.