Wheat enolase demonstrates potential as a non-toxic cryopreservation agent for liver and pancreatic cells

2015 ◽  
Vol 10 (5) ◽  
pp. 801-810 ◽  
Author(s):  
Mélanie Grondin ◽  
Mélanie Chow-Shi-Yée ◽  
François Ouellet ◽  
Diana A. Averill-Bates
Keyword(s):  
Pancreatic Cells ◽  
Cryopreservation Agent

Structural modifications of intercellular junctions.

1978 ◽  
Vol 36 (2) ◽  
pp. 330-331
Author(s):  
J. Metz ◽  
M. Merlo ◽  
W. G. Forssmann
Keyword(s):  
Gap Junctions ◽  
Intercellular Junctions ◽  
Cell Isolation ◽  
Extrahepatic Cholestasis ◽  
Structural Modifications ◽  
Pancreatic Duct Ligation ◽  
Pancreatic Cells ◽  
Duct Ligation ◽  
Thin Sectioning ◽  
And Function

Structure and function of intercellular junctions were studied under the electronmicroscope using conventional thin sectioning and freeze-etch replicas. Alterations of tight and gap junctions were analyzed 1. of exocrine pancreatic cells under cell isolation conditions and pancreatic duct ligation and 2. of hepatocytes during extrahepatic cholestasis.During the different steps of cell isolation of exocrine pancreatic cells, gradual changes of tight and gap junctions were observed. Tight junctions, which formed belt-like structures around the apex of control acinar cells in situ, subsequently diminished, became interrupted and were concentrated into macular areas (Fig. 1). Aggregations of membrane associated particles, which looked similar to gap junctions, were intermixed within tight junctional areas (Fig. 1). These structures continously disappeared in the last stages of the isolation procedure. The intercellular junctions were finally separated without destroying the integrity of the cell membrane, which was confirmed with porcion yellow, lanthanum chloride and horse radish peroxidase.

Local Integrin Activation in Pancreatic Cells Targets Insulin Secretion to the Vasculature

2018 ◽  
Author(s):  
WannJun Gan ◽  
OanhhHoang Do ◽  
Louise Cottle ◽  
Elena Kosobrodova ◽  
Justin CooperrWhite ◽  
...  
Keyword(s):  
Insulin Secretion ◽  
Integrin Activation ◽  
Pancreatic Cells

Assessment of perfluorooctanoic acid toxicity in pancreatic cells

2021 ◽  
pp. 105077
Author(s):  
Abudayyak Mahmoud ◽  
Öztaş Ezgi ◽  
Özhan Gül
Keyword(s):  
Perfluorooctanoic Acid ◽  
Pancreatic Cells ◽  
Acid Toxicity

Regulation of cytosolic free Ca2+ concentration in acinar cells of rat pancreas

1983 ◽  
Vol 245 (3) ◽  
pp. G347-G357 ◽  
Author(s):  
H. Streb ◽  
I. Schulz
Keyword(s):  
Steady State ◽  
Incubation Medium ◽  
Minimal Medium ◽  
Acinar Cells ◽  
Pancreatic Acinar Cells ◽  
Atpase Inhibitor ◽  
Rat Pancreas ◽  
Mitochondrial Inhibitors ◽  
Pancreatic Cells ◽  
State Concentration

Ca2+ uptake into isolated exocrine pancreatic cells with highly permeable plasma membrane was determined by measuring the decrease in free Ca2+ concentration of the surrounding incubation medium with a Ca2+-specific electrode. In the presence of Mg-ATP and respiratory substrates the free Ca2+ concentration of the incubation medium decreased rapidly after addition of leaky cells until a stable medium free Ca2+ concentration of 4.2 +/- 0.1 X 10(-7) mol/l was obtained. Changes in the medium free Ca2+ concentration at steady state by addition of Ca2+ or EGTA were buffered by cellular uptake or release, respectively, until the steady-state free Ca2+ concentration was reestablished. When nonmitochondrial Ca2+ uptake was determined in the presence of a combination of mitochondrial inhibitors (10(-5) mol/l antimycin, 5 X 10(-6) mol/l oligomycin, and 10(-2) mol/l azide), the rate of uptake was considerably reduced, while the steady-state concentration was unaltered. In contrast, mitochondrial uptake that could be observed in the presence of the ATPase inhibitor vanadate (2 X 10(-3) mol/l) proceeded at the same rate as the control, but the minimal medium free Ca2+ concentration reached was 2.4 +/- 0.1 X 10(-7) mol/l higher than the control. Addition of secretagogues at steady-state free Ca2+ concentration resulted in a Ca2+ release of 0.73 +/- 0.08 nmol/mg protein. The increase in medium free Ca2+ concentration was entirely transient and followed by reuptake to the prestimulation level. The data indicate that a cytosolic free Ca2+ concentration of 4 X 10(-7) mol/l can be regulated in pancreatic acinar cells by a nonmitochondrial Mg2+-dependent Ca2+ pool.

scholarly journals Experimental Studies on the Effects of Surplus Histamine to the Pancreatic Cells and the Duodenal Epithelial Cells

1956 ◽  
Vol 10 (2) ◽  
pp. 315-327
Author(s):  
Kimio FUJIE ◽  
Kazuko TOJYO ◽  
Tadao KAWAI ◽  
Kaitaro FURUTA
Keyword(s):  
Epithelial Cells ◽  
Experimental Studies ◽  
Pancreatic Cells
Sign in / Sign up

Export Citation Format

Share Document