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Preoperative ManagementThe primary goals of preoperative management in kidney transplantation are to optimize the patient’s metabolic state and prepare them for surgery through diet adjustments, necessary dialysis, and tailored medical treatment. This phase also involves comprehensive infection screening and patient education about the surgical procedure and postoperative care to improve outcomes and adherence.Medical ManagementA comprehensive evaluation is required for both the living...
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Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
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Unexplained post-renal transplant tolerance: a case report.

Sailaja Kesiraju1, Uma Maheswara Rao Ch2, Purna Paritala3

  • 1Department of Immunology and Biochemistry, Transimmun-Transplantation Immunology and Research Center, Somajiguda, Hyderabad, 500082, India. kesirajusailaja@gmail.com.

Immunologic Research
|December 23, 2015
PubMed
Summary

This case study reports a patient achieving long-term clinical operational tolerance after stopping immunosuppression. Elevated B lymphocytes and NK cells suggest their role in maintaining graft function without drugs.

Keywords:
B lymphocyteImmunosuppressionNK cellRenal transplantTolerance

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Area of Science:

  • Transplantation immunology
  • Immunoregulation

Background:

  • Achieving an immunosuppression-free state, known as clinical operational tolerance, is a primary goal in organ transplantation.
  • Maintaining long-term allograft function without immunosuppressive therapy remains a significant challenge.

Observation:

  • A patient successfully withdrew from immunosuppression in 2011.
  • The patient's allograft has functioned normally for over three years post-immunosuppression withdrawal.
  • Post-withdrawal, serum creatinine was 1.34 mg/dL and proteinuria was 178 mg/24h.

Findings:

  • Flow cytometry revealed an increased number of B lymphocytes and Natural Killer (NK) cells.
  • Interleukin-10 (IL-10) cytokine levels were elevated, while Interferon-gamma (IFN-γ) levels decreased.
  • These immunological changes suggest a shift towards a more tolerant state.

Implications:

  • B lymphocytes and NK cells, through their immunoregulatory functions, may play a crucial role in sustaining long-term graft function without immunosuppression.
  • Further research into the interactions between NK cells and B lymphocytes could elucidate the mechanisms underlying organ tolerance.
  • Understanding these mechanisms may pave the way for developing novel strategies to induce tolerance in transplant recipients.