Protective effects of ulinastatin on islets isolated by automated method from canine pancreas
- VernacularTitle:乌司他丁对犬胰岛的保护作用
- Author:
Yimin SONG
;
Chunfang SONG
;
Ping XU
- Publication Type:Journal Article
- Keywords:
Islets of langerhans;
Cell separation;
Ulinastatin
- From:
Chinese Journal of Organ Transplantation
2003;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the protective effects of ulinastatin (UTI) on canine islets isolated by automated method and to determine whether the addition of UTI during the in situ pancreatic perfusion process may improve islet recovery. Methods There was no significant difference in donor-related factors (age, gender, warm ischemia time, cold storage time, weight and pancreas weight) between the two experimental groups. Twenty donors were randomly divided into two groups. Pancreases were in situ perfused via abdominal aorta using cold hypertonic citric potassium solution (HC-A) 2 500 ml, group 1 (HC-A group, n =10). The pancreases were perfused with cold HC-A and UTI ( 10 000 U/kg), group 2 (HC-A+UTI group, n =10). Intraductal collagenase V (4℃) delivery with controlled perfusion was done, the pancreas was dissociated in system of Ricordi Chamber and their purified islets were separated with Ficoll density gradient centrifugation. The digestion time, islets remaining trapped in exocrine tissue, final islet purity, insulin and C-pep secretory activity, and islet recovery were observed. The purified islets were observed under light microscopy and electronic microscopy. Results UTI supplementation did not affect the digestion time, islets remaining trapped in exocrine tissue, final islet purify, insulin and C-pep secretory activity and their ultrastructure, and islet recovery was increased. In the HC-A+UTI group the yield of islets was [( 6.17 ? 2.86 )?10 4] IEQ, while in the HC-A group, that was [( 3.42 ? 1.47 )?10 4] IEQ ( P
