1,516 research outputs found
Trabsplantation of microencapsulated human islet in non immunosuppressed diabetic patients.
No full textStem cells for the cell and molecular therapy of type 1 diabetes mellitus (T1D): the gap between dream and reality.
No full textIn spite of intense research, over the past 2-3 decades, targeted to validating methods for the cure of T1D, based on cell substitution therapy in the place of exogenously administered insulin injections, achievement of the final goal continues to remain out of reach. In fact, aside of very limited clinical success of the few clinical trials of pancreatic islet cell transplantation in totally immunosuppressed patients with T1D, the vast majority of these diabetic patients invariably is insulin-dependent. New advances for cell and molecular therapy for T1D, including use of stem cells, are reviewed and discussed in an attempt to clearly establish where we are and where are we may go for the final cure for T1DM
Chapter Profilo minimo dell’opera di Riccardo Del Punta (1957-2022)
No full textThe author reconstructs and comments on the scientific production of Riccardo del Punta, examining his style, influences, lines of research, and legacy for labour law
Microencapsulation of Islets for the Treatment of Type 1 Diabetes Mellitus (T1D)
No full textMicroencapsulation technology, based on use of alginic acid biopolymers, has been devised many years ago. However, when intended for enveloping human islets for transplantation purposes, the method needs to be up-scaled and implemented with care being taken to comply with simple but important measures. It is almost indispensable to rely on an ultrapurified alginic polymers: in fact, any, even minimal, alginate contamination with endotoxins, pyrogens, and proteins could provoke the host’s inflammatory reaction upon graft, with heavy adverse consequences on the capsules immunoprotective properties, hence on graft survival per se. Care should be taken in ensuring fabrication of reproducible microspheres, in terms not only of shape and size, but also consistency of the peripheral layers around the central alginate gel core, where the islets are immobilized. Once the product is well defined and stable, care should also be taken in accurately selecting patients with T1D that are candidate for encapsulated islet cell transplantation with no general immunosuppression. A series of pre- and post-intraperitoneal transplant metabolic, chemical, and immunological parameters are to be monitored, in conjunction with image analysis of the abdomen, in order to assess efficacy of the intervention according to well defined grading scale
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