Author + information
- Received January 10, 2005
- Revision received May 23, 2005
- Accepted May 24, 2005
- Published online September 20, 2005.
- Gianluca Perseghin, MD⁎,†,⁎ (, )
- Paolo Fiorina, MD‡,
- Francesco De Cobelli, MD†,§,
- Paola Scifo, PhD†∥,
- Antonio Esposito, MD§,
- Tamara Canu, PhD§,
- Massimo Danna, PhD∥,
- Chiara Gremizzi, MD‡,
- Antonio Secchi, MD‡,
- Livio Luzi, MD⁎,†,¶ and
- Alessandro Del Maschio, MD†,§
- ↵⁎Reprint requests and correspondence:
Dr. Gianluca Perseghin, Section of Nutrition/Metabolism & Unit of Clinical Spectroscopy, Istituto Scientifico H San Raffaele Internal Medicine, via Olgettina 60, 20132 Milan, Italy.
Objectives To test whether left ventricular (LV) dysfunction affecting type 1 diabetic-uremic patients was associated with abnormal heart high-energy phosphates (HEPs) and to ascertain whether these alterations were also present in recipients of kidney or kidney-pancreas transplantation.
Background Heart failure is the major determinant of mortality in patients with diabetic uremia. Both uremia and diabetes induce alterations of cardiac HEPs metabolism.
Methods Magnetic resonance imaging and phosphorous magnetic resonance spectroscopy of the LV were performed in the resting state by means of a 1.5-T clinical scanner. Eleven diabetic-uremic patients, 5 nondiabetic patients with uremia, 11 diabetic recipients of kidney transplantation, and 16 diabetic recipients of combined kidney-pancreas transplantation were studied in a cross-sectional fashion. Eleven nondiabetic recipients of kidney-only transplant and 13 healthy subjects served as control groups.
Results Uremic patients had higher LV mass, diastolic dysfunction, and lower phosphocreatine (PCr)/adenosine triphosphate (ATP) ratio in comparison with recipients of kidney-pancreas or nondiabetic recipients of kidney transplant. In diabetic recipients of kidney transplant the PCr/ATP ratio was higher than in uremic patients but was lower than in the controls. Recipients of combined kidney-pancreas transplant had a higher ratio than uremic patients but no difference was found in comparison with controls.
Conclusions Altered resting myocardial HEPs metabolism may contribute to LV dysfunction in diabetic-uremic patients. In diabetic recipients of kidney transplantation, a certain degree of LV metabolic and functional impairment was found. In combined kidney-pancreas recipients the resting LV metabolism and function were not different than in controls.
This work was supported by grants from the Italian Ministry of Health (RF02.199). Drs. Perseghin and Fiorina contributed equally to this work.
- Received January 10, 2005.
- Revision received May 23, 2005.
- Accepted May 24, 2005.
- American College of Cardiology Foundation