Biomaterial Database

Rapid selection of viable transplantable human fetal pancreatic islets by trypan blue exclusion. 1986

B Formby, and L Walker, and C M Peterson

A rapid method of separating viable from nonviable human fetal pancreatic islets prior to transplantation is needed to quantify grafted tissue and optimize the possibility of successful treatment of diabetes mellitus in the recipient. After incubation with 0.04% trypan blue in isotonic Krebs-Ringer buffer solution for 15 min, the percentage of islets that excluded trypan blue was found to correlate well with fractional stimulated insulin secretion rates. The incubation procedure did not alter the subsequent insulin secretory capacity of the islets. Trypan blue exclusion rapidly and reliably identifies viable functional islet tissue prior to transplantation.

UI	MeSH Term	Description	Entries
D007515	Islets of Langerhans	Irregular microscopic structures consisting of cords of endocrine cells that are scattered throughout the PANCREAS among the exocrine acini. Each islet is surrounded by connective tissue fibers and penetrated by a network of capillaries. There are four major cell types. The most abundant beta cells (50-80%) secrete INSULIN. Alpha cells (5-20%) secrete GLUCAGON. PP cells (10-35%) secrete PANCREATIC POLYPEPTIDE. Delta cells (~5%) secrete SOMATOSTATIN.	Islands of Langerhans,Islet Cells,Nesidioblasts,Pancreas, Endocrine,Pancreatic Islets,Cell, Islet,Cells, Islet,Endocrine Pancreas,Islet Cell,Islet, Pancreatic,Islets, Pancreatic,Langerhans Islands,Langerhans Islets,Nesidioblast,Pancreatic Islet
D002469	Cell Separation	Techniques for separating distinct populations of cells.	Cell Isolation,Cell Segregation,Isolation, Cell,Cell Isolations,Cell Segregations,Cell Separations,Isolations, Cell,Segregation, Cell,Segregations, Cell,Separation, Cell,Separations, Cell
D002470	Cell Survival	The span of viability of a cell characterized by the capacity to perform certain functions such as metabolism, growth, reproduction, some form of responsiveness, and adaptability.	Cell Viability,Cell Viabilities,Survival, Cell,Viabilities, Cell,Viability, Cell
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014343	Trypan Blue	A diazo-naphthalene sulfonate that is widely used as a stain.	Diamine Blue,Niagara Blue,VisionBlue,Blue, Diamine,Blue, Niagara,Blue, Trypan
D016381	Islets of Langerhans Transplantation	The transference of pancreatic islets within an individual, between individuals of the same species, or between individuals of different species.	Grafting, Islets of Langerhans,Pancreatic Islets Transplantation,Transplantation, Islets of Langerhans,Transplantation, Pancreatic Islets,Islands of Langerhans Transplantation,Islands of Pancreas Transplantation,Islet Transplantation,Transplantation, Islands of Langerhans,Transplantation, Islands of Pancreas,Transplantation, Islet,Islet Transplantations,Islets Transplantation, Pancreatic,Transplantations, Islet