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Acute Studies on the Glycemic Index After Intake of Different Sorts of Barley in Subjects With Type 2 Diabetes

Type 2 Diabetes Clinical Trial

Official title:
HIAMBA-1 - the Effects of Nude Barley and Gene-modified High-amylose Barley on Postprandial Glucose Metabolism in Subjects With Type 2 Diabetes

Clinical Trial Summary

In a series of double-blinded randomized cross-over acute studies, the investigators want to study the effects of different types of barley on the glycemic index (GI) in subjects with type 2 diabetes. The most common type of barley in Denmark is with rind and demands processing before use. Processing may remove important nutrients from the barley. Some of the original antiquity barley has a loose rind (nude barley), that falls off during harvesting, and thereby reduces the need for processing. The investigators want to study how this ancient type of barley affects GI. Furthermore, some of the investigators collaborative partners have made it possible to increase the amount of amylose in regular barley by genetic modification. The investigators want to study the effect on GI of this new type of modified barley.

Clinical Trial Description

Approx. 60 mio. people worldwide live with diabetes and the prevalence is increasing. The increase is primarily due to obesity, unhealthy diet and lack of physical activity. Therefore, it is important to find dietary products that counteracts this development. Intake of food with a low glycemic index (GI) reduces the risk of developing type 2 diabetes (T2D) and helps in the regulation of a preexisting diabetes. Barley has shown some beneficial effects on GI compared with wheat, however, barley is not commonly used in bread making in Denmark. The most common type of barley in Denmark is with rind and demands processing before use. Processing may remove important nutrients from the barley. Some of the original antiquity barley has a loose rind (nude barley), that falls of during harvesting, and thereby reduces the need for processing. However, it is not known how this ancient type of barley affects GI. The composition of the starch in barley is of importance when the grain is degraded after consumption. The starch consists of both amylose (which is slowly degraded) and amylopectin (which is quickly degraded). By genetic modification, it was possible for collaborative researchers at the Universities of Aarhus and Copenhagen to increase the amount of amylose in regular barley. Slowly degraded starch is expected to decrease GI. In a series of acute studies the investigators want to study the effects on the glucose metabolism to intake of bread made with different compositions of wheat, nude barley and gene-modified high-amylose barley in subjects with T2D. It is expected that both nude barley and gene-modified high-amylose barley lowers the postprandial glycemic response more than wheat and hereby positively affect the glycemic regulation for subjects with type 2 diabetes. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04646746
Study type Interventional
Source University of Aarhus
Contact
Status Completed
Phase N/A
Start date February 8, 2021
Completion date October 29, 2021
View Details
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