
G-CREDIT (Gangnam-Cohort for Risk Evaluation of Diabetes and Impaired Glucose Tolerance)
Type 2 DiabetesImpaired Glucose IntoleranceThe prevalence of type 2 diabetes has consistently increased and type 2 diabetes can cause many types of vascular complications. Diabetes develops due to glucose intolerance. Early detection and intervention in the stage of glucose intolerance makes it afford to prevent overt diabetes and its complications. This study was designed to make a cohort of korean patients with glucose intolerance to construct a long term database about clinical characteristics of these patients.

The Significance of Glucose Intolerance in the Pathogenesis of Idiopathic Axonal Polyneuropathy...
Idiopathic Axonal PolyneuropathyAbnormal OGTTThe purpose of this study is to determine whether impaired glucose handling (abnormality in the way the body processes blood sugar) can cause a neuropathy (damage to the nerves).

A Trial to Assess Diets Containing Beef vs. Poultry on Pancreatic Beta-Cell Function
PreDiabetesThe objective of this study is to assess and compare the effects of usual diets containing lean beef vs. lean poultry on pancreatic beta-cell responses in men and women with prediabetes.

Effects of Artificial Sweeteners on Gut Microbiota and Glucose Metabolism
Impaired Glucose ToleranceThe Objectives of this study is to determine the effect(s) of daily non-caloric artificial sweetener (NAS) consumption (sucralose or aspartame) on the composition of the bacteria and also to determine the changes in glucose metabolism.

Maternal Emotions and Diet in Pregnancy
Pregnancy RelatedStress2 moreThis study seeks to understand how a mother's emotional state in pregnancy influences her biological response to food intake.

Effects of Two Doses of Thylakoids on OGTT
Glucose IntoleranceThis cross-over intervention study aims to investigate the effect of two doses of thylakoids to an oral glucose tolerance test (OGTT) on glucose and insulin homeostasis as well as appetite regulating hormones in healthy volunteers.

Pharmacogenomics of the Variability in the In Vivo Response to Glucocorticoids
Glucocorticoids ToxicityGlucose IntoleranceThis study evaluates the effect of acute administration of oral prednisone in white blood cells counts and glucose tolerance and the relationship of these measures with changes in gene expression in healthy volunteers. White blood cells counts, glucose tolerance and gene expression will be study before and after prednisone administration.

Time Restricted EATing (TREAT) Pilot Study
Overweight and ObesityPre DiabetesThe TREAT Pilot is a 3 months open-label pilot study to examine the effect of restricting the duration of eating (Time Restricted EATing) in metabolically unhealthy adults with overweight or obesity. This pilot study will allow the investigator to collect preliminary data for the design of a larger study.

Reducing Risk of Type 2 Diabetes: Hydroxychloroquine Use in Pre-Diabetes
Pre-diabetesThe purpose of this study is to determine the short-term effects of the antimalarial medication, hydroxychloroquine (HCQ), compared with placebo using frequently sampled intravenous glucose tolerance testing (FSIGTT) methodology to study changes in insulin secretion and glucose tolerance in subjects at risk for developing Type 2 diabetes.

The Interaction Between Metformin and Acute Exercise
Impaired Glucose ToleranceDiabetes Mellitus1 morePhysical activity is a first line treatment for patients with type 2 diabetes (T2D), however, the vast majority of patients with T2D do not achieve satisfying glycemic control with physical activity alone, which is why pharmacological treatment with metformin is most often initiated. It is known that metformin and exercise both activates 5' adenosine monophosphate-activated protein kinase (AMPK) in skeletal muscle and liver, and the activation of AMPK results in many different metabolic effects, including improvements in glycemic control. Because of this similarity in mechanism of action, an interaction between metformin and exercise is plausible, but knowledge in the area is sparse. Thus, the aim of this study is to assess the effects of acute physical activity with and without concomitant metformin treatment, in order to investigate whether an interaction between the two occur. Subjects with impaired glucose tolerance will be randomized (1:1) to metformin/placebo treatment in a double-blinded way. Following a treatment run-in period of 17 days, two experimental days (one with acute exercise and one without acute exercise), separated by one week, will be performed in each subject. This registration concerns a sub-study of another study which has previously been registrered at ClinicalTrials.gov (Unique Protocol ID: H-17012307). The specific outcomes in this registration have not previously been registered.