Pancreas is a preeminent source of ghrelin after sleeve gastrectomy in Wistar rats.

Abstract:

:Many surgical techniques are employed in the treatment of severe obesity. A main consequence of these techniques is the improvement of type 2 Diabetes mellitus. Ghrelin is a gut hormone released in the gastric fundus and corpus, which has been related to diabetic improvement as mentioned in these papers. Sleeve gastrectomy and Roux-en Y Gastric Bypass are surgical techniques broadly employed in humans; both severely reduce the gastric surface. Paradoxically, the serum level of ghrelin in patients is preserved. We hypothesized about the role of embryonic pancreatic epsilon cells, which have the capacity to release ghrelin. We studied the changes in the epsilon cells and differentiation markers with immunostaining and ghrelin serum level and after surgery. We employed euglycemic male Wistar rats: two surgical groups (Sleeve gastrectomy and Roux-en Y Gastric Bypass) and two control groups. We reported a significant increase of ghrelin epsilon-cells in the pancreas and basal serum after Sleeve gastrectomy versus the control groups. The epsilon cellular increment was related to neogenesis, as the neurogenin-3 marker revealed. The Roux-en Y Gastric Bypass showed neither epsilon cell increase nor basal serum changes in ghrelin release. As a conclusion, we reported that the severe suppression of the fundus gastric produced the recovery of ghrelin released by the epsilon cells, which was indicative of an ontogenic embryonic pancreatic function.

journal_name

Histol Histopathol

authors

Camacho-Ramírez A,Mayo-Ossorio MÁ,Pacheco-García JM,Almorza-Gomar D,Ribelles-García A,Belmonte-Núñez A,Prada-Oliveira JA,Pérez-Arana GM

doi

10.14670/HH-18-200

subject

Has Abstract

pub_date

2020-08-01 00:00:00

pages

801-809

issue

8

eissn

0213-3911

issn

1699-5848

pii

HH-18-200

journal_volume

35

pub_type

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