نتایج جستجو برای: islet transplantation oxidative stress

تعداد نتایج: 636869  

2012
Neelam Lingwal Manju Padmasekar Balaji Samikannu Reinhard G. Bretzel Klaus T. Preissner Thomas Linn

Islet transplantation provides an approach to compensate for loss of insulin-producing cells in patients with type 1 diabetes. However, the intraportal route of transplantation is associated with instant inflammatory reactions to the graft and subsequent islet destruction as well. Although matrix metalloprotease (MMP)-2 and -9 are involved in both remodeling of extracellular matrix and leukocyt...

2017
Jingjing Wang Zhen Sun Wenyu Gou David B. Adams Wanxing Cui Katherine A. Morgan Charlie Strange Hongjun Wang

Islet cell transplantation has limited effectiveness because of an instant blood-mediated inflammatory reaction (IBMIR) that occurs immediately after cell infusion and leads to dramatic β-cell death. In intraportal islet transplantation models using mouse and human islets, we demonstrated that α-1 antitrypsin (AAT; Prolastin-C), a serine protease inhibitor used for the treatment of AAT deficien...

Journal: :Diabetes 2002
Breay W Paty Edmond A Ryan A M James Shapiro Jonathan R T Lakey R Paul Robertson

Islet allotransplantation can provide prolonged insulin independence in selected individuals with type 1 diabetes. Whether islet transplantation also restores hypoglycemic counterregulation is unclear. To determine if hypoglycemic counterregulation is restored by islet transplantation, we studied hormone responses and hypoglycemic symptom recognition in seven insulin-independent islet transplan...

2012
Yong Wang Joshua E. Mendoza-Elias Meirigeng Qi Tricia A. Harvat Sang Joon Ahn Dongyoung Lee Diana Gutierrez Hyojin Jeon Daniel Paushter José Oberholzer

Islet transplantation is a promising therapy for type 1 diabetes mellitus; however, success rates in achieving both short- and long-term insulin independence are not consistent, due in part to inconsistent islet quality and quantity caused by the complex nature and multistep process of islet isolation and transplantation. Since the introduction of the Edmonton Protocol in 2000, more attention h...

Journal: :Archives of endocrinology and metabolism 2015
Jakeline Rheinheimer Andrea C Bauer Sandra P Silveiro Aline A F Estivalet Ana P Bouças Annelise R Rosa Bianca M de Souza Fernanda S de Oliveira Lavínia A Cruz Letícia A Brondani Mirela J Azevedo Natália E Lemos Rodrigo Carlessi Taís S Assmann Jorge L Gross Cristiane B Leitão Daisy Crispim

Type 1 diabetes mellitus (T1DM) is associated with chronic complications that lead to high morbidity and mortality rates in young adults of productive age. Intensive insulin therapy has been able to reduce the likelihood of the development of chronic diabetes complications. However, this treatment is still associated with an increased incidence of hypoglycemia. In patients with "brittle T1DM", ...

2016
Kevin Vivot Malika A. Benahmed Elodie Seyfritz William Bietiger Karim Elbayed Elisa Ruhland Allan Langlois Elisa Maillard Michel Pinget Nathalie Jeandidier Jean-Pierre Gies Izzie-Jacques Namer Séverine Sigrist Nathalie Reix

Intrahepatic transplantation of islets requires a lot of islets because more than 50% of the graft is lost during the 24 hours following transplantation. We analyzed, in a rat model, early post-transplantation inflammation using systemic inflammatory markers, or directly in islet-transplanted livers by immunohistochemistry. 1H HRMAS NMR was employed to investigate metabolic responses associated...

Journal: :World journal of transplantation 1988
Olle Korsgren B Nilsson C Berne M Felldin A Foss R Kallen T Lundgren K Salmela A Tibell G Tufveson

Islet transplantation is currently being explored as a treatment for patients with type 1 diabetes. At present, the number of patients becoming insulin-independent is rapidly increasing world-wide applying the transplantation protocol originally described by the group in Edmonton. A hallmark in this procedure is repeated infusions of islets obtained from 2 to 4 donors until normoglycemia is ach...

2016
A Langlois S Dal K Vivot C Mura E Seyfritz W Bietiger C Dollinger C Peronet E Maillard M Pinget N Jeandidier S Sigrist

BACKGROUND AND PURPOSE Liraglutide improves the metabolic control of diabetic animals after islet transplantation. However, the mechanisms underlying this effect remain unknown. The objective of this study was to evaluate the anti-inflammatory and anti-oxidative properties of liraglutide on rat pancreatic islets in vitro and in vivo. EXPERIMENTAL APPROACH In vitro, rat islets were incubated w...

2017
Pei-Yu Chao James A. Lin Je-Chiuan Ye Jin-Ming Hwang Wei-Jen Ting Chih-Yang Huang Jer-Yuh Liu

Objectives: Cell transplantation therapy of Schwann cells (SCs) is a promising therapeutic strategy after spinal cord injury. However, challenges such as oxidative stress hinder satisfactory cell viability and intervention for enhancing SCs survival is critical throughout the transplantation procedures. Ocimum gratissimum, widely used as a folk medicine in many countries, has therapeutic and an...

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