scholarly journals Intracellular Signalling Pathways Associated with the Glucose-Lowering Effect of St36 Electroacupuncture in Streptozotocin-Induced Diabetic Rats

2015 ◽  
Vol 33 (5) ◽  
pp. 395-399 ◽  
Author(s):  
Chung-Yuh Tzeng ◽  
Yu-Chen Lee ◽  
Tin-Yun Ho ◽  
Ying-I Chen ◽  
Tai-Hao Hsu ◽  
...  
Keyword(s):  
Cell Adhesion ◽  
Cell Adhesion Molecules ◽  
Diabetic Rats ◽  
Intracellular Signalling ◽  
Signalling Pathways ◽  
Glucose Lowering ◽  
Lowering Effect ◽  
Intracellular Signalling Pathways ◽  
Glucose Lowering Effect

Background and Aim Previous animal studies have reported a glucose-lowering effect of electroacupuncture (EA) and suggested that the mechanisms are closely related to intracellular signalling pathways. The aim of this study was to screen for potential intracellular signalling pathways that are upregulated by EA at ST36 bilaterally in rats with diabetes mellitus (DM) using microarray analysis. Methods Streptozotocin (STZ)-induced diabetic rats were randomly assigned to experimental (EA, n=8) or control (non-EA, n=8) groups. Plasma glucose levels were measured at baseline and after 30 and 60 min, and microarray analysis was performed on samples of gastrocnemius muscle. Results Relative to baseline values, EA significantly reduced plasma levels of glucose at 30 and 60 min. The microarray pathway analysis showed that cell adhesion molecules and type 1 DM gene sets were both upregulated in EA versus non-EA groups (p<0.05). Conclusions Cell adhesion molecules might be related to the glucose-lowering effect induced by EA in rats with STZ-induced type 1 diabetes. Further research will be required to examine the involvement of related intracellular signalling pathways.

scholarly journals Glucose lowering effect of Zornia gibbosa Span extracts in diabetic rats

2018 ◽  
Author(s):  
Mallikarjuna Rao Talluri ◽  
Rajananda Swamy Tadi ◽  
Ganga Rao Battu ◽  
Zubair Mohammad
Keyword(s):  
Diabetic Rats ◽  
Glucose Lowering ◽  
Lowering Effect ◽  
Glucose Lowering Effect

scholarly journals Pharmacokinetics and Pharmacodynamics of Three Different Formulations of Insulin Aspart: A Randomized, Double-blind, Crossover Study in Men With Type 1 Diabetes

2020 ◽  
Author(s):  
Eva Svehlikova ◽  
Ines Mursic ◽  
Thomas Augustin ◽  
Christoph Magnes ◽  
David Gerring ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Crossover Study ◽  
Insulin Aspart ◽  
Pharmacokinetics And Pharmacodynamics ◽  
Onset Of Action ◽  
Double Blind ◽  
Glucose Lowering ◽  
Lowering Effect ◽  
Glucose Lowering Effect

OBJECTIVE <p>To investigate the pharmacokinetic and pharmacodynamic properties, and safety of a novel formulation of insulin aspart (AT247) versus currently marketed insulin aspart formulations (IAsp and faster IAsp).</p> <p> </p> <p>RESEARCH DESIGN AND METHODS</p> <p>This single-center, randomized, double-blind, three-period, crossover study was conducted in 19 men with type 1 diabetes, receiving single dosing of trial products (0.3 U/kg) in a random order on three visits. Pharmacokinetics and pharmacodynamics were assessed during a euglycemic clamp lasting up to 8 hours. </p> <p> </p> <p>RESULTS</p> <p>Onset of insulin appearance was earlier for AT247 compared with IAsp (−12 minutes [95% CI −14;−8] p=0.0004) and faster IAsp (−2 minutes [−5;−2] p=0.0003). Onset of action was accelerated compared with IAsp (−23 minutes [−37;−15] p=0.0004) and faster IAsp (−9 minutes [−11;−3] p=0.0006). Within the first 60 minutes, a higher exposure was observed for AT247 compared with IAsp (AUC<sub>Asp,0-60min</sub>: treatment ratio vs IAsp 2.3 [1.9;2.9]; vs faster IAsp 1.5 [1.3;1.8]), which was underpinned by a greater early glucose-lowering effect (AUC<sub>GIR,0-60min</sub>: treatment ratio vs IAsp 2.8 [2.0;5.5]; vs faster IAsp 1.7 [1.3;2.3]). Furthermore, an earlier offset of exposure was observed for AT247 compared with IAsp (−32 minutes [−58;−15] p=0.0015) and faster IAsp (−27 minutes [−85;−15] p=0.0017), while duration of glucose-lowering effect, measured by t<sub>Late50%GIRmax</sub>, did not differ significantly.</p> <p> </p> <p>CONCLUSIONS</p> <p>AT247 exhibited an earlier insulin appearance, exposure and offset, with corresponding enhanced early glucose-lowering effect compared with IAsp and faster IAsp. It therefore represents a promising candidate in the pursuit for second generation prandial insulin analogs to improve postprandial glycemic control.</p>

scholarly journals UCP1-independent glucose-lowering effect of leptin in type 1 diabetes: only in conditions of hypoleptinemia

2020 ◽  
Vol 318 (1) ◽  
pp. E72-E86
Author(s):  
Petr Zouhar ◽  
Günaj Rakipovski ◽  
Muhammad Hamza Bokhari ◽  
Oliver Busby ◽  
Johan F. Paulsson ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Therapeutic Potential ◽  
Uncoupling Protein ◽  
Leptin Resistance ◽  
Diabetic Mice ◽  
High Fat ◽  
Glucose Lowering ◽  
Lowering Effect ◽  
Glucose Lowering Effect

The possibility to use leptin therapeutically for lowering glucose levels in patients with type 1 diabetes has attracted interest. However, earlier animal models of type 1 diabetes are severely catabolic with very low endogenous leptin levels, unlike most patients with diabetes. Here, we aim to test glucose-lowering effects of leptin in novel, more human-like murine models. We examined the glucose-lowering potential of leptin in diabetic models of two types: streptozotocin-treated mice and mice treated with the insulin receptor antagonist S961. To prevent hypoleptinemia, we used combinations of thermoneutral temperature and high-fat feeding. Leptin fully normalized hyperglycemia in standard chow-fed streptozotocin-treated diabetic mice. However, more humanized physiological conditions (high-fat diets or thermoneutral temperatures) that increased adiposity — and thus also leptin levels — in the diabetic mice abrogated the effects of leptin, i.e., the mice developed leptin resistance also in this respect. The glucose-lowering effect of leptin was not dependent on the presence of the uncoupling protein-1 and was not associated with alterations in plasma insulin, insulin-like growth factor 1, food intake or corticosterone but fully correlated with decreased plasma glucagon levels and gluconeogenesis. An important implication of these observations is that the therapeutic potential of leptin as an additional treatment in patients with type 1 diabetes is probably limited. This is because such patients are treated with insulin and do not display low leptin levels. Thus, the potential for a glucose-lowering effect of leptin would already have been attained with standard insulin therapy, and further effects on blood glucose level through additional leptin cannot be anticipated.

scholarly journals Pharmacokinetics and Pharmacodynamics of Three Different Formulations of Insulin Aspart: A Randomized, Double-blind, Crossover Study in Men With Type 1 Diabetes

2020 ◽  
Author(s):  
Eva Svehlikova ◽  
Ines Mursic ◽  
Thomas Augustin ◽  
Christoph Magnes ◽  
David Gerring ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Crossover Study ◽  
Insulin Aspart ◽  
Pharmacokinetics And Pharmacodynamics ◽  
Onset Of Action ◽  
Double Blind ◽  
Glucose Lowering ◽  
Lowering Effect ◽  
Glucose Lowering Effect

OBJECTIVE <p>To investigate the pharmacokinetic and pharmacodynamic properties, and safety of a novel formulation of insulin aspart (AT247) versus currently marketed insulin aspart formulations (IAsp and faster IAsp).</p> <p> </p> <p>RESEARCH DESIGN AND METHODS</p> <p>This single-center, randomized, double-blind, three-period, crossover study was conducted in 19 men with type 1 diabetes, receiving single dosing of trial products (0.3 U/kg) in a random order on three visits. Pharmacokinetics and pharmacodynamics were assessed during a euglycemic clamp lasting up to 8 hours. </p> <p> </p> <p>RESULTS</p> <p>Onset of insulin appearance was earlier for AT247 compared with IAsp (−12 minutes [95% CI −14;−8] p=0.0004) and faster IAsp (−2 minutes [−5;−2] p=0.0003). Onset of action was accelerated compared with IAsp (−23 minutes [−37;−15] p=0.0004) and faster IAsp (−9 minutes [−11;−3] p=0.0006). Within the first 60 minutes, a higher exposure was observed for AT247 compared with IAsp (AUC<sub>Asp,0-60min</sub>: treatment ratio vs IAsp 2.3 [1.9;2.9]; vs faster IAsp 1.5 [1.3;1.8]), which was underpinned by a greater early glucose-lowering effect (AUC<sub>GIR,0-60min</sub>: treatment ratio vs IAsp 2.8 [2.0;5.5]; vs faster IAsp 1.7 [1.3;2.3]). Furthermore, an earlier offset of exposure was observed for AT247 compared with IAsp (−32 minutes [−58;−15] p=0.0015) and faster IAsp (−27 minutes [−85;−15] p=0.0017), while duration of glucose-lowering effect, measured by t<sub>Late50%GIRmax</sub>, did not differ significantly.</p> <p> </p> <p>CONCLUSIONS</p> <p>AT247 exhibited an earlier insulin appearance, exposure and offset, with corresponding enhanced early glucose-lowering effect compared with IAsp and faster IAsp. It therefore represents a promising candidate in the pursuit for second generation prandial insulin analogs to improve postprandial glycemic control.</p>

scholarly journals Plasma Glucose-Lowering Effect of Tramadol in Streptozotocin-Induced Diabetic Rats

Diabetes ◽  
2001 ◽  
Vol 50 (12) ◽  
pp. 2815-2821 ◽  
Author(s):  
J.-T. Cheng ◽  
I-M. Liu ◽  
T.-C. Chi ◽  
T.-F. Tzeng ◽  
F.-H. Lu ◽  
...  
Keyword(s):  
Plasma Glucose ◽  
Diabetic Rats ◽  
Glucose Lowering ◽  
Lowering Effect ◽  
Glucose Lowering Effect
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