Islet isolation and purification from inbred Wuzhishan miniature pigs. 2012

Xiaofeng Jiang, and Taolai Qian, and Thomas Linn, and Liangqi Cao, and Guangyang Xiang, and Yezeng Wang, and Heping Peng, and Ping Xue, and Lehong Zhang, and De Chen, and Xuewei Yang
Department of Surgery, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.

BACKGROUND To investigate the applicability of inbred Wuzhishan (WZS) miniature pigs for porcine islet isolation and purification. METHODS Islet isolation and purification was conducted on adult (1-yr-old), male inbred WZS miniature pigs and age- and sex-matched market pigs obtained from a local slaughterhouse (control group). Pancreata were excised, and islet isolation was carried out by static digestion and discontinuous gradient centrifugation. Viability of the purified islets was tested by radioimmunochemistry assay to measure glucose-induced insulin release in culture and transplantation in an in vivo study. RESULTS The anatomical structure of the WZS miniature pig pancreas was more similar to the human pancreas than that of the market pig. Islet yield of the WZS miniature pigs' pancreata was significantly higher than that of the market pigs (6078 ± 1105 vs. 2500 ± 625 islet equivalents [IEQ]/g). In vitro study demonstrated that the islets isolated from WZS miniature pigs were viable, as they efficiently responded to glucose challenge. In vivo study showed that the islets from both groups could cure the diabetic rat with the survival varied from 3 to 5 days (median, 4.3 days) and 2-4 days (median, 3.6 days) in experimental group and control group, respectively. CONCLUSIONS Wuzhishan miniature pig pancreas may be a feasible source of islets for xenotransplantation.

UI MeSH Term Description Entries
D007328 Insulin A 51-amino acid pancreatic hormone that plays a major role in the regulation of glucose metabolism, directly by suppressing endogenous glucose production (GLYCOGENOLYSIS; GLUCONEOGENESIS) and indirectly by suppressing GLUCAGON secretion and LIPOLYSIS. Native insulin is a globular protein comprised of a zinc-coordinated hexamer. Each insulin monomer containing two chains, A (21 residues) and B (30 residues), linked by two disulfide bonds. Insulin is used as a drug to control insulin-dependent diabetes mellitus (DIABETES MELLITUS, TYPE 1). Iletin,Insulin A Chain,Insulin B Chain,Insulin, Regular,Novolin,Sodium Insulin,Soluble Insulin,Chain, Insulin B,Insulin, Sodium,Insulin, Soluble,Regular Insulin
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
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008297 Male Males
D009924 Organ Culture Techniques A technique for maintenance or growth of animal organs in vitro. It refers to three-dimensional cultures of undisaggregated tissue retaining some or all of the histological features of the tissue in vivo. (Freshney, Culture of Animal Cells, 3d ed, p1) Organ Culture,Culture Technique, Organ,Culture Techniques, Organ,Organ Culture Technique,Organ Cultures
D009929 Organ Size The measurement of an organ in volume, mass, or heaviness. Organ Volume,Organ Weight,Size, Organ,Weight, Organ
D001947 Breeding The production of offspring by selective mating or HYBRIDIZATION, GENETIC in animals or plants. Breedings
D005947 Glucose A primary source of energy for living organisms. It is naturally occurring and is found in fruits and other parts of plants in its free state. It is used therapeutically in fluid and nutrient replacement. Dextrose,Anhydrous Dextrose,D-Glucose,Glucose Monohydrate,Glucose, (DL)-Isomer,Glucose, (alpha-D)-Isomer,Glucose, (beta-D)-Isomer,D Glucose,Dextrose, Anhydrous,Monohydrate, Glucose
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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