TY - JOUR
T1 - Differences in hormone localisation patterns of K and L type enteroendocrine cells in the mouse and pig small intestine and colon
AU - Cho, Hyunjung
AU - KOSARI, Sam
AU - Hunne, Billie
AU - Callaghan, Brid
AU - Rivera, Leni
AU - Bravo, David
AU - Furness, John
N1 - Funding Information:
This work was supported by funding from Pancosma, SA. We thank Professor Frank Dunshea and Maree Cox of the Faculty of Veterinary and Agricultural Sciences for supplying intestinal samples from pigs. We utilised facilities of the Australian Phenomics Network Histopathology and Organ Pathology Service, University of Melbourne.
Publisher Copyright:
© 2014, Springer-Verlag Berlin Heidelberg.
PY - 2015/2
Y1 - 2015/2
N2 - This study has investigated the patterns of colocalisation of the conventional K cell marker, glucagon-like insulinotropic peptide (GIP), and the L cell markers, glucagon like peptide-1 (GLP-1) and peptide YY (PYY), in enteroendocrine cells (EEC) of the small intestine and colon of mouse and pig. All combinations of the hormones, 3 in a cell, 2 in a cell and 1 at a time, were encountered. In both species, the three most common EEC types contained (1) both GLP-1 and PYY but not GIP, (2) GLP-1 alone or (3) GIP plus GLP-1 without PYY. Few GIP plus PYY cells and rare cells containing all 3 hormones were encountered. Gradients of cell types occurred along the intestine. For example, in mouse, there were no PYY cells in the duodenum and few in the jejunum, but >50 % of labelled EEC in the distal ileum and colon were PYY immunoreactive. By contrast, over 40 % of EEC in the pig duodenum contained PYY, and most also contained either GLP-1 or GIP. The gradient in pig was less pronounced. It is concluded that the traditional classification of K and L cells requires revision, and that there are major inter-species differences in the patterns of colocalisation of hormones that have been used to characterise K and L cells
AB - This study has investigated the patterns of colocalisation of the conventional K cell marker, glucagon-like insulinotropic peptide (GIP), and the L cell markers, glucagon like peptide-1 (GLP-1) and peptide YY (PYY), in enteroendocrine cells (EEC) of the small intestine and colon of mouse and pig. All combinations of the hormones, 3 in a cell, 2 in a cell and 1 at a time, were encountered. In both species, the three most common EEC types contained (1) both GLP-1 and PYY but not GIP, (2) GLP-1 alone or (3) GIP plus GLP-1 without PYY. Few GIP plus PYY cells and rare cells containing all 3 hormones were encountered. Gradients of cell types occurred along the intestine. For example, in mouse, there were no PYY cells in the duodenum and few in the jejunum, but >50 % of labelled EEC in the distal ileum and colon were PYY immunoreactive. By contrast, over 40 % of EEC in the pig duodenum contained PYY, and most also contained either GLP-1 or GIP. The gradient in pig was less pronounced. It is concluded that the traditional classification of K and L cells requires revision, and that there are major inter-species differences in the patterns of colocalisation of hormones that have been used to characterise K and L cells
KW - Gastrointestinal hormones
KW - Glucagon like peptide
KW - Glucagon-like insulinotropic peptide
KW - K cells
KW - L cells
KW - Peptide YY
UR - http://www.scopus.com/inward/record.url?scp=84925513501&partnerID=8YFLogxK
U2 - 10.1007/s00441-014-2033-3
DO - 10.1007/s00441-014-2033-3
M3 - Article
SN - 0302-766X
VL - 359
SP - 693
EP - 698
JO - Cell and Tissue Research
JF - Cell and Tissue Research
IS - 2
ER -