Abstract:
BACKGROUND/AIMS:Widespread clinical application of islet transplantation remains restricted, because of insufficient methods to prevent rejection and autoimmune destruction of islet grafts. In this study we demonstrate long-term function of islets of Langerhans within a capsule of porcine chondrocytes which may serve as an immunoisolation barrier utilizing the immunoprivileged properties of the chondrocyte matrix. METHODS:Islets of Langerhans were isolated from Lewis rats, seeded on biodegradable polyglycolic acid polymer, and encapsulated with a monolayer of porcine chondrocytes. The encapsulated constructs and controls were kept in culture for 5 weeks. One group was exposed to a glucose challenge every 5th day. The insulin concentration of the culture medium was measured. Histological and insulin-immunohistochemical studies were performed. RESULTS:Hematoxylin and eosin histology demonstrated viability of the islets of Langerhans. The intact morphology was demonstrated by Heidenhain staining. Toluidine blue showed viability of surrounding chondrocyte layers. Immunohistochemistry was positive for insulin within the beta cells of the islets. Both encapsulated constructs and nonencapsulated controls showed increasing insulin levels after glucose challenge. CONCLUSIONS:We can tissue engineer a chondrocyte encapsulation membrane which permits diffusion of glucose and insulin. Islets of Langerhans survive within the chondrocyte capsule, and the glucose/insulin feedback mechanism remains intact.
journal_name
Dig Surgjournal_title
Digestive surgeryauthors
Pollok JM,Lorenzen M,Kölln PA,Török E,Kaufmann PM,Kluth D,Bohuslavizki KH,Gundlach M,Rogiers Xdoi
10.1159/000050130subject
Has Abstractpub_date
2001-01-01 00:00:00pages
204-10issue
3eissn
0253-4886issn
1421-9883pii
50130journal_volume
18pub_type
杂志文章abstract:INTRODUCTION:Percutaneous radiofrequency ablation (PcRFA) provides alternative means of treating patients with unresectable colorectal liver metastases. We previously reported our initial experience in 30 patients treated with PcRFA. We present the final long-term results in these 30 patients. METHODS:The final outcom...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000107717
更新日期:2007-01-01 00:00:00
abstract:BACKGROUND/AIMS:The surgical treatment of duodenogastric reflux (DGR), resistant to medical therapy, in patients with intact stomach is difficult to standardize. The aim of this study is to present our experience on 5 patients, all cholecystectomized, with severe DGR disease treated surgically. METHODS:Out of a group ...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000018583
更新日期:1998-01-01 00:00:00
abstract::Partial liver resections are the treatment of choice for patients with a malignant liver or bile duct tumor. The most frequent indications for partial liver resections are colorectal metastasis, hepatocellular carcinoma (HCC) and cholangiocarcinoma. Liver resection is the only therapy with a chance for cure in these p...
journal_title:Digestive surgery
pub_type: 杂志文章,评审
doi:10.1159/000103656
更新日期:2007-01-01 00:00:00
abstract::This study was designed to evaluate the efficacy of preoperative chemotherapy and to investigate the relationship between the histopathologic response and prognosis in patients with colorectal carcinoma. Thirty-six previously untreated patients with advanced colorectal carcinoma were consecutively enrolled in this stu...
journal_title:Digestive surgery
pub_type: 临床试验,杂志文章
doi:10.1159/000018649
更新日期:1998-01-01 00:00:00
abstract::Behçet's disease (BD) is a multisystem disorder characterized by vasculitis. The aim of this report is to present a patient with BD and diverticular disease of the colon and discuss the possible association between BD and diverticulosis. To our knowledge, diverticular disease of the colon has not been previously repor...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000050185
更新日期:2001-01-01 00:00:00
abstract:INTRODUCTION:In the management of pancreatic cystic neoplasms (PCN), size plays a crucial role as the expression of disease progression. While many evidences regarding the natural history of growing pancreatic cysts exist, almost no data are available regarding cysts with a reduction in size. METHODS:Radiological and ...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000485199
更新日期:2018-01-01 00:00:00
abstract::The abdominal cocoon is a rare disease that is characterized by a total or partial encasement of the small bowel by a thick and fibrotic membrane. Thirty-five cases were reported since it was first described. It occurs primarily in females. Preoperative diagnosis is a matter of challenge and usually made at laparotomy...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000065827
更新日期:2002-01-01 00:00:00
abstract::Hepatocellular adenomas (HCA) are rare benign tumours occurring mainly in women under oral contraceptives. HCA bleed frequently and transform rarely into hepatocellular carcinoma. Identification of genes recurrently mutated in HCA and good genotype/phenotype correlations provided the basis of a pathomolecular classifi...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000268406
更新日期:2010-01-01 00:00:00
abstract:BACKGROUND:Perianal warts are common, and may be extensive. Electrocoagulation is a recognised management option. METHOD:A 20-year-old male underwent electrocautery of extensive perianal warts. He presented 3 months postoperatively with constipation and inability to defecate. Examination revealed severe perianal stric...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000018856
更新日期:2000-01-01 00:00:00
abstract::The authors reported the magnetic resonance imaging (MRI) detection of manganese (Mn) deposition in the basal ganglia of a pancreatoduodenectomized patient following 30-day parenteral nutrition. A multi-trace element supplement solution including 20 micromol Mn/day was parenterally administered for 30 days postoperati...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000018830
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND AND AIM:Most patients with hepatic metastases from colorectal carcinoma are unsuitable for resection. Radiofrequency ablation (RFA) has been applied to such lesions at laparotomy. This study aimed to evaluate the less invasive approach of percutaneous RFA. METHOD:Patients with unresectable liver metastases ...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000080886
更新日期:2004-01-01 00:00:00
abstract:BACKGROUND:Diverticulitis can lead to localized or generalized peritonitis and consequently induce abdominal adhesion formation. If adhesions would lead to abdominal complaints, it might be expected that these would be more prominent after operation for perforated diverticulitis with peritonitis than after elective sig...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000486868
更新日期:2019-01-01 00:00:00
abstract:INTRODUCTION:To elucidate the clinical presentation, diagnosis and management of primary hepatic carcinoid tumours, a literature search was conducted and summarized. MATERIALS AND METHODS:Published primary hepatic carcinoid tumour case reports and series were searched and selected in the Medline, EMBASE and Cochrane L...
journal_title:Digestive surgery
pub_type: 杂志文章,评审
doi:10.1159/000167021
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:The conservative treatment of acute necrotizing pancreatitis has greatly improved due to broad antibiotic treatment and improved organ support in intensive care units. Nevertheless, infected necrosis or persistent multi-organ dysfunction are predictors of poor outcome. In these patients, there is still a nee...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000345620
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:Hepatic resection for hepatocellular carcinoma (HCC) is now established as the treatment most likely to yield the best outcome. We aimed to clarify the risk factors for HCC recurrence after curative resection of single HCC in patients with normal liver function (NLF). METHODS:The clinical records of 105 pat...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000451066
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:A choice of retrosternal or orthotopic route for reconstruction exists after three-phase esophagectomy with cervical anastomosis. Whether the route of reconstruction affects postoperative morbidity, mortality and recurrence patterns remains controversial. STUDY DESIGN:Patients with cancer of the thoracic es...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000070387
更新日期:2003-01-01 00:00:00
abstract:BACKGROUNDS:Endoscopic submucosal dissection (ESD) has been widely performed in the treatment of early esophageal squamous cell carcinoma (ESCC). Few studies have compared the long-term outcomes of esophageal ESD based on absolute indications and relative indications. The aim of the current study was to investigate the...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000507437
更新日期:2021-01-01 00:00:00
abstract:AIMS:To describe the extremely rare case of an adenomyoma of the papilla of Vater. CASE REPORT:A 42-year-old woman was hospitalized for epigastralgia and high fever. The clinical presentation and endoscopic, biochemical, and radiologic findings led to the diagnostic impression of a dysfunction of the papilla of Vater....
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000050115
更新日期:2001-01-01 00:00:00
abstract::This report presents a case of a patient with a huge hepatocellular carcinoma in the right lobe of the liver with an extensive portal venous tumor thrombus extending into the main portal trunk and left portal branch. The patient underwent extended right hemihepatectomy with tumor thrombectomy with direct extraction fr...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000324596
更新日期:2011-01-01 00:00:00
abstract:AIMS:The present study was designed to evaluate the effects of perioperative treatment with TNP-470 on the resistance of colonic anastomoses. TNP-470 is a drug that was developed as an inhibitor of angiogenesis. METHODS:A colonic anastomosis was constructed in Sprague-Dawley rats. From 4 days before surgery to 4 days ...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000018820
更新日期:2000-01-01 00:00:00
abstract:INTRODUCTION:To determine the best imaging modality for preoperative detection, characterization and measurement of colorectal liver metastases (CRLM) after neoadjuvant chemotherapy (NAC). METHODS:A total of 79 lesions in 15 patients with CRLM were included. Following NAC, all patients received multislice liver CT (MS...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000322390
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND/AIMS:Predicting models of operative morbidity and mortality in the geriatric population are important in the prevention of adverse surgical outcomes. METHODS:A retrospective review of medical records was performed for patients over 80 years of age who underwent gastrointestinal surgery from 1998 to 2008. R...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000274485
更新日期:2010-08-01 00:00:00
abstract:BACKGROUND:Therapeutic strategies to prevent port site recurrences in laparoscopy surgery of malignancies have not been investigated until now. METHODS:The effects of taurolidine, heparin, and povidone iodine on the growth of rat and human colon adenocarcinoma as well as gallbladder carcinoma were investigated in vitr...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000018754
更新日期:1999-01-01 00:00:00
abstract:BACKGROUND:In order to diagnose an unsuspected gallbladder carcinoma and to examine whether a differential diagnosis could be made between cancer and noncancerous lesions during surgery, we evaluated the findings of fine structures of various types of gallbladder mucosa. METHODS:We used stereomicroscopy with a dye-con...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000050156
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:Different results and opinions exist concerning the use of a standard or an extended lymphadenectomy, and about the indications for portal vein resection in the surgical treatment of pancreatic cancer. The site of recurrence of pancreatic cancer may help to define the usefulness of different treatments in av...
journal_title:Digestive surgery
pub_type: 杂志文章,评审
doi:10.1159/000018735
更新日期:1999-01-01 00:00:00
abstract:BACKGROUND/AIMS:Approximately 20% of patients undergoing surgery for ulcerative colitis will retain their rectum. A single-stage proctocolectomy could be an appropriate procedure in patients who are definitely not candidates for a later restorative procedure, but it is generally not advised in acutely ill patients. The...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000381033
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND/AIMS:Primary distal bile duct adenocarcinomas (DBDAs) are unusual neoplasms, necessitating pancreaticoduodenectomy for cure. The aims of this study were to evaluate the prognostic importance of lymphatic and perineural invasion, long-term outcome of patients after resection, and differences in outcome with h...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000018798
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:Biliary leakage after liver resection continues to be reported. Management of bile leakage has changed in recent years, with nowadays non-surgical procedures as the preferred treatment. METHODS:Biliary leakage and management were assessed in 381 patients who underwent liver resection between January 2005 an...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000335734
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:Morbidity following pancreaticoduodenectomy (PD) has been reported to remain high. This study sought to measure the peak Hounsfield units (HUs) of visceral attenuation in patients undergoing PD and to assess the quality of adipocytes by comparing these measurements with perioperative factors. METHODS:Patien...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000505060
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:The repair of bile duct strictures (BDS) requires identification of healthy bile duct proximal to the stenosis. Identification may be difficult in complex bile duct injuries after cholecystectomy or partial liver resection. AIM:We describe a technique to identify the prestenotic bile duct using the sentinel...
journal_title:Digestive surgery
pub_type: 杂志文章
doi:10.1159/000227276
更新日期:2009-01-01 00:00:00