Abstract:
AIMS/HYPOTHESIS:Hyperinsulinaemia and insulin resistance, as well as low IGF-I, have been implicated in the pathogenesis of cardiovascular disease. Little is known about direct effects of IGF-I and insulin on human coronary artery smooth muscle cells (HCASMCs). Our aim was to characterise the expression and function of IGF-I receptor (IGF-IR) and insulin receptor (IR) in HCASMCs. MATERIALS AND METHODS:Cultured HCASMCs were used. mRNA expression was measured by quantitative real-time RT-PCR analysis. Receptor proteins, phosphorylation of beta-subunits and the presence of hybrid IR/IGF-IR were analysed by immunoprecipitation and western blotting. DNA synthesis and glucose metabolism were assessed using [3H]thymidine incorporation and D-[U-14C]glucose accumulation respectively. RESULTS:The mRNA expression of IGF-IR was approximately eight-fold higher than that of IR in HCASMCs. The presence of IGF-IR and IR could be demonstrated by immunoprecipitation and western blot analysis. Phosphorylation of the IGF-IR beta-subunit was obtained by IGF-I at 10(-10)-10(-8) mol/l and insulin at 10(-8) mol/l. Insulin and IGF-I at 10(-10)-10(-9) mol/l phosphorylated the IR beta-subunit. When immunoprecipitated with monoclonal anti-IR alpha-subunit or IGF-IR alpha-subunit antibodies, we found bands in slightly different positions, suggesting the presence of hybrid IR/IGF-IR. IGF-I at 10(-9)-10(-8) mol/l significantly stimulated [3H]thymidine incorporation and at a concentration of 10(-9)-10(-7) mol/l also D-[U-14C]glucose accumulation in HCASMCs. Insulin at 10(-9)-10(-7) mol/l had no effect on DNA synthesis, but increased glucose accumulation at 10(-7) mol/l. CONCLUSIONS/INTERPRETATION:Our study provides experimental evidence that IGF-IR and possibly hybrid IR/IGF-IR play a role in HCASMCs.
journal_name
Diabetologiajournal_title
Diabetologiaauthors
Chisalita SI,Arnqvist HJdoi
10.1007/s00125-005-1890-4subject
Has Abstractpub_date
2005-10-01 00:00:00pages
2155-61issue
10eissn
0012-186Xissn
1432-0428journal_volume
48pub_type
杂志文章相关文献
DIABETOLOGIA文献大全abstract:AIMS/HYPOTHESIS:Hyperglycaemia in diabetes is associated with increased glycation, oxidative stress and nitrosative stress. Proteins modified consequently contain glycation, oxidation and nitration adduct residues, and undergo cellular proteolysis with release of corresponding free adducts. These free adducts leak into...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-005-1810-7
更新日期:2005-08-01 00:00:00
abstract:AIMS/HYPOTHESIS:The neurotrophin nerve growth factor (NGF) is pro-angiogenic and facilitates wound repair. The present study was conducted to (i) assess the statement of NGF system components in diabetic wounds and (ii) evaluate whether NGF supplementation could prevent impairment of wound neoangiogenesis by diabetes. ...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-004-1414-7
更新日期:2004-06-01 00:00:00
abstract::Overall D-glucose metabolism and 3-0-methylglucose transport were measured in the perfused heart preparation of lean and genetically obese (fa/fa) rats. Absolute values of basal and insulin-stimulated glucose metabolism were decreased in hearts of 15-week-old obese rats when compared to lean age-matched controls. Basa...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/BF00284464
更新日期:1983-12-01 00:00:00
abstract::Hypoglycaemic sulphonamides stimulate net uptake of 45Ca++ and insulin release in isolated pancreatic islets. These effects are antagonized by organic calcium-antagonists (e.g. suloctidil). In an artificial system, hypoglycaemic sulphonamides, such as gliclazide, stimulate the translocation of calcium into or across a...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/BF00280516
更新日期:1980-10-01 00:00:00
abstract:AIMS/HYPOTHESIS:Glucagon-like peptide-2 (GLP-2) is a gut hormone regulating intestinal growth and nutrient absorption. Recently, GLP-2 has been reported to stimulate glucagon secretion in healthy humans. We sought to clarify the mechanism and physiological significance of this endocrine effect. MATERIALS AND METHODS:T...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-007-0761-6
更新日期:2007-10-01 00:00:00
abstract:AIMS/HYPOTHESIS:Enhanced and prolonged postprandial lipaemia is related to cardiovascular disease but how postprandial lipaemia is regulated is poorly known. We therefore determined the relations of fasting insulin concentrations to fasting and postprandial lipids, lipoproteins and non-esterified fatty acids in middle-...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s001250050028
更新日期:2000-02-01 00:00:00
abstract:AIMS/HYPOTHESIS:The cardiometabolic risk associated with metabolically healthy obesity (MHO) remains the subject of debate. It is unclear whether MHO is a transient condition that affects subclinical atherosclerosis risk. In this study, we aimed to investigate the association of MHO and its transition over time with in...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-020-05116-5
更新日期:2020-07-01 00:00:00
abstract:AIMS/HYPOTHESIS:Exposure to sunlight has the potential to suppress metabolic dysfunction and obesity. We previously demonstrated that regular exposure to low-doses of ultraviolet radiation (UVR) reduced weight gain and signs of diabetes in male mice fed a high-fat diet, in part via release of nitric oxide from skin. He...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-019-05022-5
更新日期:2020-01-01 00:00:00
abstract:AIMS/OBJECTIVE:Nephropathy, a major complication of diabetes, is the leading cause of end-stage renal disease. Recent studies have demonstrated that podocyte injury is involved in the onset of and progression to renal insufficiency. Here, we describe a novel, highly sensitive ELISA for detecting urinary podocalyxin, a ...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-012-2661-7
更新日期:2012-11-01 00:00:00
abstract::The involvement of the CNS in pancreatic hormone release has been studied. 1.) It has been shown that one source of vagal efferent fibers capable of facilitating insulin secretion originated in the rostral half of the nucleus ambiguus. 2.) Acute lesions of the ventromedial hypothalamus resulted in hyperinsulinaemia th...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/BF00254511
更新日期:1981-03-01 00:00:00
abstract:AIMS/HYPOTHESIS:Paraoxonase is a member of a multigene family of three genes. Paraoxonase2 gene polymorphisms have been associated with coronary heart disease in non-diabetic patients and with an increased fasting glycaemia in patients with Type II (non-insulin-dependent) diabetes mellitus. We tested the hypothesis of ...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s001250051586
更新日期:2001-01-01 00:00:00
abstract::To study the effects on the fetus of variations in maternal glucose tolerance, a 25 g rapid intravenous glucose tolerance test was performed at or about 32 weeks gestation in 917 randomly selected nondiabetic women with singleton pregnancies. The results were withheld from the patients and their obstetricians and paed...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/BF00276845
更新日期:1988-03-01 00:00:00
abstract:AIMS/HYPOTHESIS:Most of the known actions of angiotensin II have been considered primarily to be the result of angiotensin II subtype 1 receptor activation. However, recent data suggest that the angiotensin II subtype 2 receptor (AT(2)R) may modulate key processes linked to atherosclerosis. The aim of this study was to...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-009-1619-x
更新日期:2010-03-01 00:00:00
abstract:AIMS/HYPOTHESIS:Maturity onset diabetes of the young type 3 (MODY3) is a monogenic form of diabetes mellitus caused by mutations in the gene encoding for hepatocyte nuclear factor 1 alpha, HNF1 alpha. In this study we have examined the in vivo and in vitro effects of a mutation (L107I) outside the DNA binding and dimer...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-002-0977-4
更新日期:2002-12-01 00:00:00
abstract:AIMS/HYPOTHESIS:Elevated plasma levels of NEFA impair insulin action. Given the positive linear correlation between NEFA released by adipocytes and plasma NEFA levels, identification of mechanisms controlling adipocyte lipolysis and NEFA release could provide a guide to new therapies for insulin resistance and type 2 d...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-008-1036-6
更新日期:2008-08-01 00:00:00
abstract::The selective permeability of alginate microcapsules, containing isolated rat islets of Langerhans or insulin secreting RINm5F cells, was investigated in vitro. An increase in insulin release was observed when microencapsulated islets were stimulated by glucose+theophylline, and when microencapsulated RINm5F cells wer...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/BF00265027
更新日期:1985-10-01 00:00:00
abstract:AIMS/HYPOTHESIS:Intensive glucose control reduces the risk of vascular complications while increasing the risk of severe hypoglycaemia at a group level. We sought to estimate individual beneficial and adverse effects of intensive glucose control in patients with type 2 diabetes. METHODS:We performed a post hoc analysi...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-016-4082-5
更新日期:2016-12-01 00:00:00
abstract:AIMS/HYPOTHESIS:We examined the acute postprandial effects of meals containing unsaturated fatty acids on flow-mediated dilation (FMD) of the brachial artery and triacylglycerols in individuals with type 2 diabetes. We hypothesised that consumption of omega-3 fatty acids would enhance vascular function. Saturated fat r...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-004-1600-7
更新日期:2005-01-01 00:00:00
abstract:AIMS/HYPOTHESIS:Cardiovascular events and death are better predicted by postprandial glucose (PPG) than by fasting blood glucose or HbA(1c). While chronic exercise reduces HbA(1c) in patients with type 2 diabetes, short-term exercise improves measures of insulin sensitivity but does not consistently alter responses to ...
journal_title:Diabetologia
pub_type: 临床试验,杂志文章
doi:10.1007/s00125-012-2490-8
更新日期:2012-05-01 00:00:00
abstract:AIMS/HYPOTHESIS:Studies have identified an association between diabetes and breast cancer in postmenopausal women in Western countries. Such an association needs to be confirmed in an Asian population. The aim of this study was to evaluate the secular trend for breast cancer mortality in Taiwanese women in the general ...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-008-1204-8
更新日期:2009-02-01 00:00:00
abstract:AIMS/HYPOTHESIS:Insulin control of glucose output is a major mechanism by which appropriate amounts of glucose are produced to supply energy to the central nervous system, without causing long-term increases of the plasma glucose concentration. It is hypothesised that the primary route by which insulin maintains contro...
journal_title:Diabetologia
pub_type: 杂志文章,评审
doi:10.1007/s001250051474
更新日期:2000-07-01 00:00:00
abstract:AIMS/HYPOTHESIS:Our aim was to compare the therapeutic effect of thalidomide and rosiglitazone on the prevention of diabetic retinopathy in streptozotocin-induced diabetic rats. METHODS:Male Holtzman rats of 6 to 8 weeks of age and weighing 170+/-30 g were randomly divided into four groups: control ( n=13), untreated ...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-003-1234-1
更新日期:2003-12-01 00:00:00
abstract:AIMS/HYPOTHESIS:Satellite cells are responsible for postnatal skeletal muscle regeneration. It has been demonstrated that mouse satellite cells behave as multipotent stem cells. We studied the differentiation capacities of human satellite cells and evaluated the effect of the insulin sensitiser rosiglitazone, a well kn...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-006-0304-6
更新日期:2006-08-01 00:00:00
abstract:AIMS/HYPOTHESIS:In the UK, more than one million people have undiagnosed diabetes and an additional five million are at high risk of developing the disease. Given that early identification of these people is key for both primary and secondary prevention, new screening approaches are needed. Since spouses resemble each ...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-018-4587-1
更新日期:2018-07-01 00:00:00
abstract:AIMS/HYPOTHESIS:The study aimed to assess the incidence, age of onset, survival and relative hazard of dementia in well-categorised community-based patients with type 2 diabetes compared with a matched cohort of individuals without diabetes. METHODS:A longitudinal observational study was undertaken involving 1291 part...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-016-4127-9
更新日期:2017-01-01 00:00:00
abstract::Decreased release of nitric oxide from damaged endothelium is responsible for the impaired endothelium-dependent vasodilator responses found in animal models of vascular disease. Dietary supplementation with fish oils has been shown to augment endothelium-dependent relaxations, principally by improving the release of ...
journal_title:Diabetologia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF00399090
更新日期:1993-01-01 00:00:00
abstract::In order to establish a model for the in vivo assessment of islet function we have used the Rowett nude rat with transplantation of allogeneic and xenogeneic (mouse) islets into the renal subcapsular space following a minimal period of diabetic induction. Thirty-one nude rats were given streptozotocin and 30 became di...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/BF02341509
更新日期:1988-06-01 00:00:00
abstract:AIMS/HYPOTHESIS:Several risk stratification systems have been proposed for predicting development of diabetic foot ulcer. However, little has been published that assesses their similarities and disparities, diagnostic accuracy and evidence level. Consequently, we conducted a systematic review of the existing stratifica...
journal_title:Diabetologia
pub_type: 杂志文章,评审
doi:10.1007/s00125-010-2030-3
更新日期:2011-05-01 00:00:00
abstract:AIMS/HYPOTHESIS:Hyperglycaemia, a key feature of diabetes, is associated with non-enzymatic glycation of plasma proteins. We have shown previously that the reactive alpha-oxoaldehyde, methylglyoxal, non-enzymatically glycates apolipoprotein (Apo)A-I, the main apolipoprotein of HDL, and prevents it from activating lecit...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-008-0986-z
更新日期:2008-06-01 00:00:00
abstract:AIMS/HYPOTHESIS:Proinsulin is possibly associated with cancer through activation of insulin receptor isoform A. We sought to investigate the associations between proinsulin and 20 year cancer mortality rates. METHODS:The study was performed within the Hoorn Study, a population-based study of glucose metabolism in indi...
journal_title:Diabetologia
pub_type: 杂志文章
doi:10.1007/s00125-013-2864-6
更新日期:2013-05-01 00:00:00