Renal transplantation – fasting protects the kidney grafts

We are all very much accustomed to the idea that good nutrition is essential for postoperative success. However, studies show that in case of organ transplantation it seems to be the other way round. Short term dietary restriction or fasting protects the transplanted kidney from failure. It seems that the consequences of ischemia/reperfusion (I/R) injury can be diminished. As a mechanism of this reaction is unclear, recent studies show that glucose supplementation does not interfere with the fasting-induced renal protection. Read full text »

Chronic rejection of the transplanted kidney

Organ transplantation and dialysis are the only effective ways of renal replacement therapy. Because of better quality and extended life expectancy of patients, transplantation is the preferred method of the end stage renal disease treatment. Many mediators are involved in rejection of the transplanted organ. The inflammatory process after organ transplantation is secondary to the ischemia and reperfusion. Cytokines and reactive oxygen species released during reperfusion can increase the expression of ICAM-1 adhesion molecules on the surface of endothelium. Cytokines stimulate also the leukocytes, which leads to increased expression of LFA-1 and VLA-4 on their surface. LFA-1 and VLA-4 molecules react with ICAM-1 and VCAM-1, present on the endothelial cells. Activated due to adhesion leukocytes secrete proteolytic enzymes and reactive oxygen species damaging the endothelium. Read full text »

Acute rejection of the transplanted kidney

The success of the transplantation depends on many factors. These include, inter alia, the appropriate selection of donor age, compliance within HLA, degree of sensitization – anti-leucocyte antibodies level, primary disease causing the need of kidney replacement therapy, state of the other organs and coexisting diseases. No less important are the other donor-dependent factors, time of the cold ischemia, ischemia-reperfusion injury and a number of immunological and genetic factors. Read full text »

First total face transplantation performed by professor Maria Siemionow – thumbs-up!

It was December 10, 2008 when professor Maria Siemionow and a team of surgeons completed the first near-total face transplantation in America at the Cleveland Clinic in Ohio. Read full text »