PMID- 26885021 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20160217 LR - 20200930 IS - 1940-5901 (Print) IS - 1940-5901 (Electronic) IS - 1940-5901 (Linking) VI - 8 IP - 11 DP - 2015 TI - Experimental studies on islets isolation, purification and function in rats. PG - 20932-8 AB - To develop a simple and effective method of islet isolation and purification in rats. Collagenase P was injected into pancreatic duct followed by incubation in water bath to digest the pancreas and isolate islet, then discontinuous gravity gradient purification was used to purify the islet. The purified islets were identified by dithizone staining. The viability of islets was assessed by fluorescence staining of acridine orange (AO) and propidium iodide (PI). The function of purified islets was determined by glucose-stimulated insulin release test and transplantation of rat with streptozocin-induced diabetes. 738+/-193 islets were recovered after purification. The average purity was 77+/-13%, the viability of islets was more than 95%. When inspected by glucose stimulation, the secreted insulin concentration was 24.31+/-5.47 mIU/L when stimulated by low concentration glucose and 37.62+/-4.29 mIU/L by high concentration glucose. There was significant difference between the two phases (P<0.05). The blood sugar concentration recovered to normal level after two days in the animals with islet transplantation. In conclusion, islets can be procured with good function and shape by using the method of injecting collagenase into pancreatic duct followed by incubation in water bath and purification using discontinuous gravity gradient. FAU - Pang, Xinlu AU - Pang X AD - Department of Kidney Transplantation, The First Affiliated Hospital of Zhengzhou University Zhengzhou 450052, China. FAU - Xue, Wujun AU - Xue W AD - Hospital of Nephrology, The First Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710061, China. FAU - Feng, Xinshun AU - Feng X AD - Hospital of Nephrology, The First Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710061, China. FAU - Tian, Xiaohui AU - Tian X AD - Hospital of Nephrology, The First Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710061, China. FAU - Teng, Yan AU - Teng Y AD - Hospital of Nephrology, The First Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710061, China. FAU - Ding, Xiaoming AU - Ding X AD - Hospital of Nephrology, The First Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710061, China. FAU - Pan, Xiaoming AU - Pan X AD - Hospital of Nephrology, The First Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710061, China. FAU - Guo, Qi AU - Guo Q AD - Hospital of Nephrology, The First Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710061, China. FAU - He, Xiaoli AU - He X AD - Hospital of Nephrology, The First Affiliated Hospital of Medical College, Xi'an Jiaotong University Xi'an 710061, China. LA - eng PT - Journal Article DEP - 20151115 PL - United States TA - Int J Clin Exp Med JT - International journal of clinical and experimental medicine JID - 101471010 PMC - PMC4723866 OTO - NOTNLM OT - Islet OT - isolation OT - purification EDAT- 2016/02/18 06:00 MHDA- 2016/02/18 06:01 PMCR- 2015/11/15 CRDT- 2016/02/18 06:00 PHST- 2015/09/04 00:00 [received] PHST- 2015/11/02 00:00 [accepted] PHST- 2016/02/18 06:00 [entrez] PHST- 2016/02/18 06:00 [pubmed] PHST- 2016/02/18 06:01 [medline] PHST- 2015/11/15 00:00 [pmc-release] PST - epublish SO - Int J Clin Exp Med. 2015 Nov 15;8(11):20932-8. eCollection 2015.