Related Experiment Videos
[Cell-mediated lympholysis in kidney transplantation]
M C Samaniego1, R S Martín, S G Rodríguez
1Instituto de Investigaciones Médicas Alfredo Lanari, Facultad de Medicina, Universidad de Buenos Aires, Argentina.
Medicina
|January 1, 1990
Summary
Cyclosporine (CyA) and antilymphocyte globulin (ALG) decrease immune response non-specifically after kidney transplants. Monitoring immunologic parameters like cell-mediated lympholysis (CML) is crucial for managing immunosuppression effectively.
Area of Science:
- Immunology
- Transplantation Medicine
- Pharmacology
Background:
- Kidney transplant survival has improved with cyclosporine (CyA) and antilymphocyte globulin (ALG), but significant morbidity and mortality persist.
- Current immunosuppression management relies on renal function, not immunologic monitoring, potentially leading to over-immunosuppression.
- Immunological techniques are needed for early diagnosis of over-immunosuppression and to guide potential cessation of maintenance immunosuppression.
Purpose of the Study:
- To evaluate the impact of current (CyA, ALG, prednisolone) versus conventional (azathioprine, prednisolone) immunosuppressive treatments on immune response in kidney transplant recipients.
- To assess the utility of cell-mediated lympholysis (CML) as an immunologic parameter for monitoring immunosuppression.
- To determine if current immunosuppressive regimens cause non-specific immune suppression.
Main Methods:
- Seventeen kidney transplant recipients were studied, divided into two treatment groups: current (CyA, ALG, prednisolone) and conventional (azathioprine, prednisolone).
- Cell-mediated lympholysis (CML) assays were performed between recipients and their specific donors, and also with third-party unrelated controls.
- Immune responses were quantified by CML figures, comparing responses within and between treatment groups and with unrelated controls.
Main Results:
- CML responses were significantly lower in the current treatment group (CyA, ALG, prednisolone) compared to the conventional treatment group (azathioprine, prednisolone).
- The current therapy led to a non-specific decrease in immune response, as indicated by CML figures between recipients and unrelated donors.
- While CML responses increased in both groups, they remained lower in the current therapy group, suggesting a broader immunosuppressive effect.
Conclusions:
- The combination of antilymphocyte globulin (ALG) and cyclosporine (CyA) appears to induce a non-specific reduction in immune response following kidney transplantation.
- Cell-mediated lympholysis (CML) shows potential as an immunologic marker to assess the level of immunosuppression.
- Further research is needed to determine if this non-specific hypo-response pattern evolves into donor-specific hypo-responsiveness, as seen in the conventional treatment group.