Back to Search
Start Over
Dietary Alaska pollock protein alters insulin sensitivity and gut microbiota composition in rats
- Source :
- Journal of food scienceREFERENCES. 85(10)
- Publication Year :
- 2020
-
Abstract
- Fish protein is not only nutritional but also promotes health by improving insulin sensitivity and hypercholesterolemia. Few studies have examined the relationship between gut microbiota and the enhanced insulin sensitivity due to the intake of Alaska pollock protein (APP). Hence, we assessed the glycolytic enzyme inhibitory activity of APP in in vitro study and the alteration of blood glucose level in insulin tolerance test (ITT) and glucose tolerance test (GTT) and gut microbiota following APP intake in the in vivo study. In initial experiments, the glycolytic enzyme (α-amylase, α-glucosidase, and sucrase) inhibitory activities of APP and its digest were not drastically altered compared with that of casein and its digests. In further experiments, rats fed an AIN-93G diet containing 20% (w/w) casein or APP for 8 weeks, and the composition of fecal microbiota analyzed by 16S rRNA amplicon sequence analysis. In addition, at 6 and 7 weeks of administration of experimental diet, insulin and glucose tolerance tests were evaluated, respectively. Compared with dietary casein, dietary APP has blood glucose-lowering activity as evident in the ITT and GTT. Moreover, APP group altered the structure of fecal microbiota, and area under the curves of the ITT and GTT and the relative abundance of Blautia, which is associated with glucose metabolism, tended to be positively correlated (P = 0.08 and 0.10, respectively). This study illustrates a novel finding that APP intake could alter the composition of gut microbiota and improve insulin sensitivity. PRACTICAL APPLICATION: Studies in animals and humans have shown that Alaska pollock protein (APP) intake improves insulin sensitivity, allowing the body to utilize blood glucose more effectively, thereby keeping blood sugar levels under control. Microorganisms residing in the human gut are associated with glucose metabolism. This study shows that the relative APP intake alters the composition of these gut microorganisms, more than casein intake and therefore might prevent hyperglycemia and type 2 diabetes.
- Subjects :
- Blood Glucose
Fish Proteins
Male
medicine.medical_specialty
030309 nutrition & dietetics
medicine.medical_treatment
Blood sugar
Type 2 diabetes
Carbohydrate metabolism
Gut flora
Sucrase
03 medical and health sciences
Feces
0404 agricultural biotechnology
Internal medicine
medicine
Animals
Humans
Insulin
Rats, Wistar
0303 health sciences
Glucose tolerance test
medicine.diagnostic_test
biology
Bacteria
Insulin tolerance test
04 agricultural and veterinary sciences
Glucose Tolerance Test
biology.organism_classification
medicine.disease
040401 food science
Gastrointestinal Microbiome
Rats
Gadiformes
Endocrinology
Dietary Proteins
Insulin Resistance
Food Science
Subjects
Details
- ISSN :
- 17503841
- Volume :
- 85
- Issue :
- 10
- Database :
- OpenAIRE
- Journal :
- Journal of food scienceREFERENCES
- Accession number :
- edsair.doi.dedup.....142be102ba3f660a737b32561a582285