Abstract:
:Lifestyle modification reduces the risk of developing type 2 diabetes and may have its effect through improving insulin sensitivity, beta-cell function, or both. To determine whether diet and exercise improve insulin sensitivity and/or beta-cell function and to evaluate these effects over time, we quantified insulin sensitivity and the acute insulin response to glucose (AIRg) in 62 Japanese Americans (age 56.5 +/- 1.3 years; mean +/- SE) with impaired glucose tolerance (IGT) who were randomized to the American Heart Association (AHA) Step 2 diet plus endurance exercise (n = 30) versus the AHA Step 1 diet plus stretching (n = 32) for 24 months. beta-Cell function (disposition index [DI]) was calculated as S(i) x AIRg, where S(i) is the insulin sensitivity index. The incremental area under the curve for glucose (incAUCg) was calculated from a 75-g oral glucose tolerance test. Intra-abdominal fat (IAF) and subcutaneous fat (SCF) areas were measured by computed tomography. At 24 months, the Step 2/endurance group had lower weight (63.1 +/- 2.4 vs. 71.3 +/- 2.9 kg; P = 0.004) and IAF (75.0 +/- 7.9 vs. 112.7 +/- 10.4 cm(2); P = 0.03) and SCF (196.5 +/- 18.0 vs. 227.7 +/- 19.9 cm(2); P < 0.001) areas, greater S(i) (4.7 +/- 0.5 vs. 3.3 +/- 0.3 x 10(-5) min . pmol(-1) . l(-1); P = 0.01), and a trend toward lower AIRg (294.9 +/- 50.0 vs. 305.4 +/- 30.0 pmol/l; P = 0.06) and incAUCg (8,217.3 +/- 350.7 vs. 8,902.0 +/- 367.2 mg . dl(-1) . 2 h(-1); P = 0.08) compared with the Step 1/stretching group after adjusting for baseline values. There was no difference in the DI (P = 0.7) between the groups. S(i) was associated with changes in weight (r = -0.426, P = 0.001) and IAF (r = -0.395, P = 0.003) and SCF (r = -0.341, P = 0.01) areas. Thus, the lifestyle modifications decreased weight and central adiposity and improved insulin sensitivity in Japanese Americans with IGT. However, such changes did not improve beta-cell function, suggesting that this degree of lifestyle modifications may be limited in preventing type 2 diabetes over the long term.
journal_name
Diabetesjournal_title
Diabetesauthors
Carr DB,Utzschneider KM,Boyko EJ,Asberry PJ,Hull RL,Kodama K,Callahan HS,Matthys CC,Leonetti DL,Schwartz RS,Kahn SE,Fujimoto WYdoi
10.2337/diabetes.54.2.340subject
Has Abstractpub_date
2005-02-01 00:00:00pages
340-7issue
2eissn
0012-1797issn
1939-327Xpii
54/2/340journal_volume
54pub_type
临床试验,杂志文章,随机对照试验相关文献
DIABETES文献大全abstract::Glucose-dependent insulinotropic polypeptide (GIP) and GLP-1 are incretins secreted by respective K and L enteroendocrine cells after eating and amplify glucose-stimulated insulin secretion (GSIS). This amplification has been termed the "incretin response." To determine the role(s) of K cells for the incretin response...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db14-1188
更新日期:2015-04-01 00:00:00
abstract::It has been proposed that p38 mitogen-activated protein kinase (MAPK) isoforms sensitive to the pyridinylimidazole compounds SB 203580 and SB 202190 may participate in the acute insulin-dependent activation of glucose transporters recruited to the plasma membrane of adipocytes and skeletal muscle. Here, we explore whe...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diabetes.54.11.3161
更新日期:2005-11-01 00:00:00
abstract::We previously reported a syndrome of severe hyperinsulinemia and early-onset hypertension in three patients with dominant-negative mutations in the nuclear hormone receptor peroxisome proliferator-activated receptor (PPAR)-gamma. We now report the results of further detailed pathophysiological evaluation of these subj...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diabetes.52.4.910
更新日期:2003-04-01 00:00:00
abstract:OBJECTIVE:The proinflammatory cytokines/adipokines produced from adipose tissue act in an autocrine and/or endocrine manner to perpetuate local inflammation and to induce peripheral insulin resistance. The present study investigates whether lipocalin-2 deficiency or replenishment with this adipokine has any impact on s...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db09-1541
更新日期:2010-04-01 00:00:00
abstract:OBJECTIVE:Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP), now known as G6PC2, is a major target of autoreactive T cells implicated in the pathogenesis of type 1 diabetes in both mice and humans. This study aimed to determine whether suppression of G6p2 gene expression might therefore prev...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db11-0220
更新日期:2011-11-01 00:00:00
abstract::Two major metabolic perturbations, increased polyol (sorbitol) pathway activity and reduced tissue myo-inositol content, are induced in peripheral nerve by hyperglycemia. Although they are commonly invoked as alternative biochemical pathogenetic mechanisms for diabetic neuropathy, their possible interrelationship has ...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diab.32.11.988
更新日期:1983-11-01 00:00:00
abstract::Synaptotagmin (Syt)-7, a major component of the exocytotic machinery in neurons, is also the major Syt in rodent pancreatic β-cells shown to mediate glucose-stimulated insulin secretion (GSIS). However, Syt-7's precise exocytotic actions in β-cells remain unknown. We show that Syt-7 is abundant in human β-cells. Adeno...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db15-1436
更新日期:2016-07-01 00:00:00
abstract::Arterial stiffness affects cardiac functions, peripheral circulation, and cardiovascular mortality. We examined whether arterial stiffness in different regions is equally affected by diabetes and other factors. The subjects were 161 patients with type 2 diabetes and 129 healthy subjects comparable in age and sex. Arte...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diabetes.52.2.448
更新日期:2003-02-01 00:00:00
abstract:OBJECTIVE:Recent studies identified accumulation of reactive oxygen species (ROS) as a common pathway causing insulin resistance. However, whether and how the reduction of ROS levels improves insulin resistance remains to be elucidated. The present study was designed to define this mechanism. RESEARCH DESIGN AND METHO...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db08-0144
更新日期:2008-08-01 00:00:00
abstract::Expression of GLUTs in rat peripheral nerve was first studied at the mRNA level with Northern transfer analysis with cDNAs specific for GLUT1, GLUT2, GLUT3, and GLUT4. GLUT1 mRNA was the only GLUT mRNA detectable in rat sciatic nerve. In situ hybridization localized this mRNA to the perineurium and to some endo- and e...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diab.41.12.1587
更新日期:1992-12-01 00:00:00
abstract::Activation of AMPK suppresses inflammation, but the underlying mechanisms remain poorly understood. This study was designed to characterize the molecular mechanisms by which AMPK suppresses vascular inflammation. In cultured human aortic smooth muscle cells, pharmacologic or genetic activation of AMPK inhibited the si...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db15-0107
更新日期:2015-12-01 00:00:00
abstract::Results from experimental and gene-association studies suggest that IGF-II may influence body weight regulation and that individuals with low IGF-II levels may be more susceptible to weight gain and obesity. We therefore assessed the association between circulating concentrations of IGF-II and subsequent weight gain a...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diabetes.52.6.1403
更新日期:2003-06-01 00:00:00
abstract:OBJECTIVE:Recently, several drugs have been shown to exert beneficial effects for metabolic syndrome through mild regulation of mitochondrial function. Hence, we explored a strategy of targeting mitochondrial function to improve glucose and lipid metabolism. RESEARCH DESIGN AND METHODS:Mitochondrial membrane potential...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db09-0223
更新日期:2010-01-01 00:00:00
abstract::Low plasma sex hormone-binding globulin (SHBG) levels are associated with obesity and predict the development of type 2 diabetes. The reason why obese individuals have low circulating SHBG has been attributed to hyperinsulinemia, but no mechanistic evidence has been described. The aim of the current study is to explor...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db11-0727
更新日期:2012-02-01 00:00:00
abstract::Beta,beta'-methyl-substituted hexadecanedioic acid (MEDICA 16) consists of a nonmetabolizable long-chain fatty acid designed to probe the effect exerted by fatty acids on insulin sensitivity. The effect of MEDICA 16 was evaluated in insulin-resistant Zucker (fa/fa) rats in terms of liver, muscle, and adipose tissue re...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diab.46.12.1958
更新日期:1997-12-01 00:00:00
abstract::Insulin and glucagon release and insulin sensitivity were investigated in patients with glucokinase deficiency. Five subjects with a missense mutation (Glu256Lys) were studied. They were compared with six healthy subjects with low insulin response but normal glucose tolerance. Insulin and glucagon levels were measured...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diab.43.12.1402
更新日期:1994-12-01 00:00:00
abstract::Peripheral somatic and autonomic nerve function have been studied in 79 teenage (16-19 yr) diabetics and 20 age- and sex-matched normal controls. Almost three-quarters of the diabetics (72%) had abnormal peripheral somatic nerve function tests, and one-third (31%) had abnormal cardiac parasympathetic tests. Both motor...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diab.32.2.142
更新日期:1983-02-01 00:00:00
abstract::Calcium/calmodulin-dependent protein kinase (CaMK) activation induces mitochondrial biogenesis in response to increasing cytosolic calcium concentrations. Calcium leak from the ryanodine receptor (RyR) is regulated by reactive oxygen species (ROS), which is increased with high-fat feeding. We examined whether ROS-indu...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db13-0816
更新日期:2014-06-01 00:00:00
abstract::Irs2-deficient mice develop type 2-like diabetes due to a reduction in β-cell mass and a failure of pancreatic islets to undergo compensatory hyperplasia in response to insulin resistance. In order to define the molecular mechanisms, we knocked down Irs2 gene expression in mouse MIN6 insulinoma cells. Insulin receptor...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db13-1814
更新日期:2014-10-01 00:00:00
abstract::The effect of nonenzymatic glycosylation on the biologic function of human antithrombin III was evaluated using a chromogenic thrombin substrate assay in the presence of catalytic amounts of heparin. Experimental conditions that increased the rate of nonenzymatic protein glycosylation were associated with decreases in...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diab.33.6.532
更新日期:1984-06-01 00:00:00
abstract::The Dio2 gene encodes the type 2 deiodinase (D2) that activates thyroxine (T4) to 3,3',5-triiodothyronine (T3), the disruption of which (Dio2(-/-)) results in brown adipose tissue (BAT)-specific hypothyroidism in an otherwise euthyroid animal. In the present studies, cold exposure increased Dio2(-/-) BAT sympathetic s...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diabetes.53.3.577
更新日期:2004-03-01 00:00:00
abstract:OBJECTIVE:Diabetic nephropathy clusters in families, suggesting that genetic factors play a role in its pathogenesis. We investigated whether similar clustering exists for proliferative retinopathy in families with two or more siblings with type 1 diabetes. RESEARCH DESIGN AND METHODS:The FinnDiane Study has character...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db07-1495
更新日期:2008-08-01 00:00:00
abstract::Thymocytes from adult BB rats can adoptively transfer autoimmune diabetes to athymic recipients. It is also known that the development of BB rat T-cells is recapitulated in adult thymus organ cultures (ATOCs). Based on these observations, we tested the hypothesis that cells capable of the adoptive transfer of diabetes...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diabetes.50.5.972
更新日期:2001-05-01 00:00:00
abstract::Identifying new causes of permanent neonatal diabetes (PNDM) (diagnosis <6 months) provides important insights into β-cell biology. Patients with Down syndrome (DS) resulting from trisomy 21 are four times more likely to have childhood diabetes with an intermediate HLA association. It is not known whether DS can cause...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db19-0045
更新日期:2019-07-01 00:00:00
abstract::Inhibition of fatty acid synthase (FAS) induces a rapid decline in fat stores in mice, suggesting a role for this enzyme in energy homeostasis. The human FAS gene (FAS) maps to chromosome 17q25, a region previously shown to have suggestive linkage to adiposity in a genome-wide linkage scan for genetic determinants of ...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diabetes.53.7.1915
更新日期:2004-07-01 00:00:00
abstract::It is often stated that type 1 diabetes results from a complex interplay between varying degrees of genetic susceptibility and environmental factors. While agreeing with this principal, our desire is that this Perspectives article will highlight another complex interplay potentially associated with this disease involv...
journal_title:Diabetes
pub_type: 杂志文章,评审
doi:10.2337/db08-0331
更新日期:2008-10-01 00:00:00
abstract::Sirt6 is an NAD+-dependent deacetylase that is involved in the control of energy metabolism. However, the tissue-specific function of Sirt6 in the adipose tissue remains unknown. In this study, we showed that fat-specific Sirt6 knockout (FKO) sensitized mice to high-fat diet-induced obesity, which was attributed to ad...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/db16-1225
更新日期:2017-05-01 00:00:00
abstract::The neuropeptide pituitary adenylate cyclase-activating polypeptide (PACAP) is ubiquitously distributed in both the central and peripheral nervous systems and exerts a variety of effects. PACAP is a neuropeptide in pancreatic islets, where it has been suggested as a parasympathetic and sensory neurotransmitter. PACAP ...
journal_title:Diabetes
pub_type: 杂志文章,评审
doi:10.2337/diabetes.50.9.1959
更新日期:2001-09-01 00:00:00
abstract::Insulin resistance and type 2 diabetes are associated with elevated circulating levels of insulin, nonesterified fatty acids (NEFAs), and lipoprotein remnants. Extracellular matrix proteoglycan (PG) alterations are also common in macro- and microvascular complications of type 2 diabetes. In liver, extracellular hepara...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diabetes.50.9.2126
更新日期:2001-09-01 00:00:00
abstract::The BB rat spontaneously develops insulin-dependent diabetes mellitus (IDDM) as an autoimmune abnormality involving the class II molecules of the major histocompatibility complex (MHC). The rat MHC (RT1 complex) encodes two class II loci, RT1.B and RT1.D. The possibility that variant or unique class II MHC molecules m...
journal_title:Diabetes
pub_type: 杂志文章
doi:10.2337/diab.38.2.267
更新日期:1989-02-01 00:00:00