Related Experiment Videos
[Pathologic changes of infections in patients after receiving immunosuppressive therapy in renal allografts]
Abstract:
30 cases of autopsies of patients who died after human renal allografts were studied. The incidence of infection was 60% and the lethal infectious complications amounted to 43%. The most common infectious agents were bacteria, including mycobacterium tuberculosis. In addition, some opportunistic agents, such as Cryptococcus, Aspergillus, mucormycosis, Pneumocystis carinii and cytomegalovirus were also found. All these patients had a history of receiving large dosage of immunosuppressive drugs such as cyclophosphamide, azathioprine, prednisone and dexamethasone after renal allografts. Pathological changes showed marked atrophy of lymphoid tissue and it was compatible with the histologic appearance of immunodeficiency. It is concluded that overuse of immunosuppressive drugs impairs the function of the immune system causing acquired immunodeficiency. Pathological features of lesions caused by the aforementioned infectious agents are also described in this paper.
Insights
High-dose immunosuppressive drugs after renal allografts led to acquired immunodeficiency in 60% of patients, causing fatal infections in 43%. Overuse of these drugs impairs immune function, increasing infection risk.
Area of Science:
- Nephrology
- Immunology
- Pathology
Background:
- Renal allografts are crucial for end-stage renal disease.
- Immunosuppressive therapy is essential post-transplant but carries risks.
Purpose of the Study:
- To investigate the incidence and types of infections in patients who received renal allografts.
- To determine the role of immunosuppressive drugs in post-transplant complications.
Main Methods:
- Autopsy analysis of 30 patients who underwent renal allografts.
- Identification of infectious agents and pathological changes.
Main Results:
- 60% of patients experienced infections, with 43% resulting in lethal complications.
- Bacterial infections (including tuberculosis) and opportunistic pathogens (e.g., Cryptococcus, Aspergillus, Pneumocystis carinii, cytomegalovirus) were prevalent.
- Histological examination revealed lymphoid tissue atrophy, indicative of immunodeficiency.
Conclusions:
- Overuse of immunosuppressive drugs (cyclophosphamide, azathioprine, prednisone, dexamethasone) post-renal allograft impairs immune function, leading to acquired immunodeficiency.
- This immunodeficiency significantly increases susceptibility to severe and fatal infections.