Beneficial effects of Centaurium erythraea extract on glycemic control and insulin level in diabetic rats
2020
Аутори:
Đorđević, MilošGrdović, Nevena
Mihailović, Mirjana
Arambašić Jovanović, Jelena
Uskoković, Aleksandra
Rajić, Jovana
Đorđević, Marija
Tolić, Anja
Mišić, Danijela
Šiler, Branislav
Poznanović, Goran
Vidaković, Melita
Dinić, Svetlana
Остала ауторства
Dinić, SvetlanaŠunderić, Miloš
Vučić, Vesna
Vidović, Bojana
Тип документа:
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт:
Centaurium erythraea (CE) is traditionally used for diabetes treatment due to its anti-diabetic properties. Previously we have reported that the major constituents of CE methanol extract (CEE) are secoiridoids and polyphenols. Here we analyzed the protective effect of CEE on pancreatic β-cells in streptozotocin (STZ)-induced diabetic rats. CEE (100 mg/kg) was administered daily and orally to control or diabetic rats for two weeks before diabetes induction, during five days of STZ treatment (40 mg/kg/day), and for four weeks after last STZ injection (pre-treated group), or for four weeks after diabetes induction (post-treated group). Histological and immunohistochemical examination of the pancreas revealed disturbed morphology of pancreatic islets, a decrease in their number and size which was accompanied by the reduction of insulin-positive β-cells in diabetic rats when compared to control or control/CEE-treated rats. Islet morphology and mass, as well as the number of insulin-positive β-cells, were improved in CEE-treated diabetic rats, particularly in a pre-treated group. In pre- and post-treated groups we observed the increase of GLUT-2 transporter and p-Akt kinase, that were absent in diabetic pancreas pointing to impaired glucose-stimulated insulin secretion in remnant β-cells. CEE-mediated increase of β-cell mass, GLUT-2 and p-Akt levels in diabetic rats contributed to the elevation of serum insulin level and reduction of glucose level which was more prominent in pre- than in a post-treated group. The results of this study suggest that improved insulin production and glycemic control in CEE-treated diabetic rats may result from the structural/functional preservation of pancreatic islets.
Финансирање / пројекти:
- Сигнални молекули у дијабетесу: идентификација потенцијалних биолошких маркера укључених у модификацију и интеграцију сигналних путева у циљу предикције и интервенције у дијабетесу (RS-MESTD-Basic Research (BR or ON)-173020)
У:
- Dinić S, Šunderić M, Vučić V, Vidović B, editors. WGs Meeting of the NutRedOx COST Action CA16112: Nutraceuticals in balancing redox status in ageing and age-related diseases; 2020 Mar 2-3; Belgrade, Serbia. Belgrade: NutRedox, COST Action CA16112; 2020. p. 9.