Insulin treatment improves islet function in type 2 diabetic Chinese hamsters

2001 ◽  
Vol 109 (04) ◽  
pp. 196-202
Author(s):  
K. Kohnert ◽  
B. Hehmke ◽  
I. Klöting ◽  
W. Besch ◽  
B. Ahrén
1992 ◽  
Vol 68 (03) ◽  
pp. 253-256 ◽  
Author(s):  
Thomas Vukovich ◽  
Sylvia Proidl ◽  
Paul Knöbl ◽  
Harald Teufelsbauer ◽  
Christoph Schnack ◽  
...  

SummaryBeside hypercoagulation and hyperactivated platelets disturbances of the fibrinolytic system towards hypofibrinolysis have been reported to be associated with both glycemic and lipidemic derangement in diabetic patients. In the present prospective follow-up study the effect of 16 weeks insulin treatment and glycemic regulation on plasma levels of tissue plasminogen activator (tPA) and plasminogen activator inhibitor-1 (PAI-1), the main regulators of fibrinolysis, was investigated in 19 type-2 diabetic patients with secondary failure to sulphonylureas. A similar glycemic regulation was obtained in a control group of 10 type 2 diabetic patients with sufficient metabolic response to strict dietary treatment and continuation of sulphonylurea treatment. Compared to 27 healthy subjects levels of tPA and PAI-1 were not significantly increased in type 2 diabetic patients before metabolic intervention. Although a hypofibrinolytic state due to an increase of PAI-1 levels was previously reported in obese hyperinsulinemic patients, no effect of insulin treatment on both tPA- and PAI-1 levels was observed in the present study including patients with only slightly increased body mass index (median 26.0 kg/m2). By correlation analysis PAI-1 levels were significantly related to serum cholesterol (R = 0.52) and glycemic control (glucose R = 0.41) in the whole group of diabetic patients at entry and in both subgroups after 16 weeks of treatment (insulin group: cholesterol R = 0.46, HbA1c R = 0.51; sulphonylurea group: cholesterol R = 0.59, HbA1c R = 0.58). In healthy subjects tPA and PAI-1 was correlated to serum insulin (R = 0.54, R = 0.56) and triglycerides (R = 0.46, R = 0.40). In conclusion, our results indicate that insulin treatment associated with metabolic improvement has no adverse effect to fibrinolysis in type 2 diabetic patients.


2021 ◽  
Vol Volume 14 ◽  
pp. 3795-3807
Author(s):  
Qiuyue Guo ◽  
Yunsheng Xu ◽  
Jie Li ◽  
Wenrong An ◽  
Dan Luo ◽  
...  

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254980
Author(s):  
Tsuneaki Omae ◽  
Youngseok Song ◽  
Takafumi Yoshioka ◽  
Tomofumi Tani ◽  
Akitoshi Yoshida

This study aimed to evaluate whether long-term insulin treatment is associated with abnormalities in retinal circulation in type 2 diabetic patients. We evaluated 19 eyes of nondiabetic individuals and 68 eyes of type 2 diabetic patients. The eyes of diabetic patients were classified into two groups according to the presence or absence of long-term insulin therapy. We used a Doppler optical coherence tomography flowmeter to measure diameter, velocity, and blood flow in the major temporal retinal artery. The pulsatility ratio (PR) and resistance index (RI), indices of vascular rigidity, were calculated from the blood velocity profile. PR and RI were significantly elevated in type 2 diabetic patients compared with nondiabetic subjects (P < 0.05). In type 2 diabetes patients, PR and RI were significantly higher in patients receiving long-term insulin treatment than in those without (P < 0.01). There was a significant difference in velocity (P < 0.05), but not diameter and blood flow, between nondiabetic subjects and type 2 diabetes patients. No significant difference in diameter, velocity, or blood flow was observed between the groups with and without long-term insulin treatment. Long-term insulin treatment can affect PR and RI, which might be associated with vascular rigidity of the retinal artery in patients with type 2 diabetes.


2006 ◽  
Vol 32 (6) ◽  
pp. 625-631 ◽  
Author(s):  
F Galland ◽  
L Duvillard ◽  
JM Petit ◽  
L Lagrost ◽  
G Vaillant ◽  
...  

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