The research is published in the February issue of the journal Diabetes Care and is available online.
Patients with diabetes, particularly women, have a substantial increased risk of dying from ischemic heart disease, according to previous research. However, future cardiac events may be prevented with intensive glycemic control.
In the current longitudinal study, UIC researchers looked at changes over time in carotid intima-media thickness, or CIMT -- a marker for atherosclerosis -- in a group of type 1 diabetes patients without kidney disease or previous cardiovascular events.
"This is the first study to look at what happens to diabetes-related cardiovascular complications after islet cell transplantation alone without kidney transplant," said Kirstie Danielson, assistant professor in the UIC College of Medicine and School of Public Health, and lead author of the study, who noted that previous research has focused on metabolic changes and glycemic control after transplant.
The 15 adults (two men and 13 women) suffered from type 1 diabetes for more than five years and had hypoglycemic unawareness despite best efforts to manage insulin levels. The patients received a total of 27 islet transplants (one to three transplants each) and were followed from one to five years after their first transplant. CIMT was measured before and approximately every 12 months after the first islet transplant.
The researchers found a significant decrease in CIMT one year after islet transplant. The CIMT measures started to progress again -- slightly more than they would in healthy individuals without diabetes -- between 12 and 50 months. At 50 months, post-transplant the CIMT measures were still lower than pre-transplant levels, Danielson said.
"The decline of CIMT we saw at one year is not generally seen in patients with diabetes," said Danielson, who attributes the improvements to better glycemic control achieved through islet transplantation and better management of cholesterol, or lipid levels, post-transplant.
All 15 patients achieved insulin independence after receiving one to three islet transplants at the University of Illinois Hospital & Health Sciences System. At the end of the current study, 11 patients were insulin free, three remained on insulin but at greatly reduced doses, and one patient withdrew from the trial because of islet graft loss.
The next step would be to replicate these results in a larger trial, Danielson said.
Co-authors include Dr. Jose Oberholzer, Dr. Enrico Benedetti, Dr. Alessandra Mele, Dr. Meirigeng Qi, Joan Martellotto and Katie Kinzer from the UIC College of Medicine, Dr. Betul Hatipoglu from the Clevelend Clinic, and Dr. Bruce Kaplan from the University of Arizona.
The University of Illinois Hospital & Health Sciences System provides comprehensive care, education and research to the people of Illinois and beyond. The UI Health System includes a 495-bed tertiary hospital; the University of Illinois at Chicago Colleges of Medicine, Dentistry, Pharmacy, Nursing, Applied Health Sciences, School of Public Health and the Jane Addams College of Social Work; 22 outpatient clinics located in Chicago; 12 federally qualified health centers throughout the city; and Colleges of Medicine and affiliated health care facilities in Urbana, Peoria and Rockford.
For more information: The University of Illinois Hospital & Health Sciences System.
Sherri McGinnis González | EurekAlert!
The Great Unknown: Risk-Taking Behavior in Adolescents
19.01.2017 | Max-Planck-Institut für Bildungsforschung
A sudden drop in outdoor temperature increases the risk of respiratory infections
11.01.2017 | University of Gothenburg
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences