scholarly journals Type 2 Diabetic Patients with Ischemic Stroke: Decreased Insulin Sensitivity and Decreases in Antioxidant Enzyme Activity Are Related to Different Stroke Subtypes

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Aleksandra Jotic ◽  
Nadezda Covickovic Sternic ◽  
Vladimir S. Kostic ◽  
Katarina Lalic ◽  
Tanja Milicic ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Antioxidant Enzymes ◽  
Ischemic Stroke ◽  
Insulin Sensitivity ◽  
Antioxidant Enzyme ◽  
Antioxidant Enzyme Activity ◽  
Diabetic Patients ◽  
Stroke Subtypes ◽  
Type 2 Diabetic

We analyzed (a) insulin sensitivity (IS) and (b) glutathione peroxidase (GSH-Px), glutathione reductase (GR), and superoxide dismutase (SOD) antioxidant enzyme activity in type 2 diabetic (T2D) patients with atherothrombotic infarction (ATI) (group A), lacunar infarction (LI) (B), or without stroke (C) and in nondiabetics with ATI (D), LI (E), or without stroke (F). ATI and LI were confirmed by brain imaging IS levels were determined by minimal model (Si index), and the enzyme activity by spectrophotometry. In T2D patients, Si was lower in A and B versus C (1.14±0.58,1.00±0.26versus3.14±0.62 min−1/mU/l × 104,P<0.001) and in nondiabetics in D and E versus F (3.38±0.77,3.03±0.72versus6.03±1.69 min−1/mU/l × 104,P<0.001). Also, GSH-Px and GR activities were lower in A and B versus C (GSH-Px:21.96±3.56,  22.51±1.23versus25.12±1.67; GR:44.37±3.58,  43.50±2.39versus48.58±3.67 U/gHb;P<0.001) and in D and E versus F (GSH-Px:24.75±3.02,  25.57±1.92versus28.56±3.91; GR:48.27±6.81,  49.17±6.24versus53.67±3.96 U/gHb;P<0.001). Decreases in Si and GR were significantly related to both ATI and LI in T2D. Our results showed that decreased IS and impaired antioxidant enzymes activity influence ischemic stroke subtypes in T2D. The influence of insulin resistance might be exerted on the level of glutathione-dependent antioxidant enzymes.

Long-Term Oral L-Arginine Administration Improves Peripheral and Hepatic Insulin Sensitivity in Type 2 Diabetic Patients

Diabetes Care ◽  
2001 ◽  
Vol 24 (5) ◽  
pp. 875-880 ◽  
Author(s):  
P. Piatti ◽  
L. D. Monti ◽  
G. Valsecchi ◽  
F. Magni ◽  
E. Setola ◽  
...  
Keyword(s):  
Insulin Sensitivity ◽  
Diabetic Patients ◽  
Type 2 Diabetic Patients ◽  
Hepatic Insulin Sensitivity ◽  
Type 2 Diabetic

Insulin resistance and classic risk factors in type 2 diabetic patients with different subtypes of ischemic stroke

Diabetes Care ◽  
1999 ◽  
Vol 22 (7) ◽  
pp. 1191-1195 ◽  
Author(s):  
K. Matsumoto ◽  
S. Miyake ◽  
M. Yano ◽  
Y. Ueki ◽  
A. Miyazaki ◽  
...  
Keyword(s):  
Risk Factors ◽  
Insulin Resistance ◽  
Ischemic Stroke ◽  
Diabetic Patients ◽  
Type 2 Diabetic Patients ◽  
Type 2 Diabetic

scholarly journals Plasma lipoprotein(a) levels: a comparison between diabetic and non-diabetic patients with acute ischemic stroke

2004 ◽  
Vol 62 (2a) ◽  
pp. 233-236 ◽  
Author(s):  
Maurus Marques de Almeida Holanda ◽  
Rosália Gouveia Filizola ◽  
Maria José de Carvalho Costa ◽  
Rodrigo Vasconcelos C.L. de Andrade ◽  
José Alberto Gonçalves da Silva
Keyword(s):  
Ischemic Stroke ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Lipoprotein Cholesterol ◽  
Diabetic Patients ◽  
Low Density ◽  
Low Density Lipoprotein Cholesterol ◽  
Type 2 Diabetic Patients ◽  
Type 2 Diabetic

OBJECTIVE: The aim of this study was to evaluate lipoprotein(a) (Lp(a)), total cholesterol, high density lipoprotein cholesterol (HDL), low density lipoprotein cholesterol (LDL), very low density lipoprotein cholesterol (VLDL ), triglycerides , apolipoprotein A (apo A) and B100 (apo B100), uric acid, glycaemic and insulin plasmatic concentrations in patients affected by acute stroke. In this group of patients, we have compared the variables between type 2 diabetic patients and non-diabetic patients. METHOD: We evaluate a total of 34 non-diabetic patients (22 males and 12 females; mean age 66.71 ± 10.83 years) and a group of 26 type 2 diabetic patients (15 males and 11 females; mean age 66.35 ± 9.92 years) in a cross-sectional study. RESULTS: Mean Lp(a) concentration did not significantly differ between type 2 diabetic patients and non-diabetic subjects (29.49 ± 23.09 vs 44.81 ± 44.34 mg/dl). The distribution of Lp(a)levels was highly skewed towards the higher levels in both groups, being over 30 mg/dl in 50%. Lp(a) concentration was positively correlated with abdominal adiposity, using waist-hip ratio(WHR)(p< 0.05). No association was found between Lp(a) and others risk factors like sex, age, other lipidic parameters and the presence of stroke. CONCLUSIONS: Our results showed that there were no significant differences between diabetic and non-diabetic patients' serum Lp(a) levels, which indicates that elevated Lp(a) levels were associated with ischemic stroke, irrespective of the presence of type 2 diabetes mellitus (type 2 DM).

Adiponectin expression in adipose tissue is reduced in first-degree relatives of type 2 diabetic patients

2003 ◽  
Vol 284 (2) ◽  
pp. E443-E448 ◽  
Author(s):  
A. S. Lihn ◽  
T. Østergård ◽  
B. Nyholm ◽  
S. B. Pedersen ◽  
B. Richelsen ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Insulin Sensitivity ◽  
Subcutaneous Adipose Tissue ◽  
Diabetic Patients ◽  
Mrna Levels ◽  
Type 2 Diabetic Patients ◽  
Adiponectin Mrna ◽  
Subcutaneous Adipose ◽  
Type 2 Diabetic

Adiponectin is suggested to be an important mediator of insulin resistance. Therefore, we investigated the association between adiponectin and insulin sensitivity in 22 healthy first-degree relatives (FDR) to type 2 diabetic patients and 13 matched control subjects. Subcutaneous adipose tissue biopsies were taken before and after a hyperinsulinemic euglycemic clamp. FDR subjects were insulin resistant, as indicated by a reduced Mvalue (4.44 vs. 6.09 mg · kg−1· min−1, P < 0.05). Adiponectin mRNA expression was 45% lower in adipose tissue from FDR compared with controls ( P < 0.01), whereas serum adiponectin was similar in the two groups (6.4 vs. 6.6 μg/ml, not significant). Insulin infusion reduced circulating levels of adiponectin moderately (11–13%) but significantly in both groups ( P < 0.05). In the control group, adiponectin mRNA levels were negatively correlated with fasting insulin ( P < 0.05) and positively correlated with insulin sensitivity ( P < 0.05). In contrast, these associations were not found in the FDR group. In conclusion, FDR have reduced adiponectin mRNA in subcutaneous adipose tissue but normal levels of circulating adiponectin. Adiponectin mRNA levels are positively correlated with insulin sensitivity in control subjects but not in FDR. These findings indicate dysregulation of adiponectin gene expression in FDR.

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