126 research outputs found
Living related hemi-face skin transplant using radial forearm free flap for a xeroderma pigmentosa patient: early outcome
Hand disease in scleroderma: a clinical correlate for chronic hand transplant rejection
Chronic rejection remains a potential long-term consequence of hand composite tissue allotransplantation (CTA). Scleroderma has already been proposed as a model for chronic facial allograft rejection based on potential parallels of observed progression of disease and pathophysiology course. This study proposes a similar model for how chronic rejection may manifest itself in the context of hand CTA through the functional and psychological assessment of patients with scleroderma, should it occur
Male Microchimerism at High Levels in Peripheral Blood Mononuclear Cells from Women with End Stage Renal Disease before Kidney Transplantation
Patients with end stage renal diseases (ESRD) are generally tested for donor chimerism after kidney transplantation for tolerance mechanism purposes. But, to our knowledge, no data are available on natural and/or iatrogenic microchimerism (Mc), deriving from pregnancy and/or blood transfusion, acquired prior to transplantation. In this context, we tested the prevalence of male Mc using a real time PCR assay for DYS14, a Y-chromosome specific sequence, in peripheral blood mononuclear cells (PBMC) from 55 women with ESRD, prior to their first kidney transplantation, and compared them with results from 82 healthy women. Male Mc was also quantified in 5 native kidney biopsies obtained two to four years prior to blood testing and in PBMC from 8 women collected after female kidney transplantation, several years after the initial blood testing. Women with ESRD showed statistically higher frequencies (62%) and quantities (98 genome equivalent cells per million of host cells, gEq/M) of male Mc in their PBMC than healthy women (16% and 0.3 gEq/M, p<0.00001 and p = 0.0005 respectively). Male Mc was increased in women with ESRD whether they had or not a history of male pregnancy and/or of blood transfusion. Three out of five renal biopsies obtained a few years prior to the blood test also contained Mc, but no correlation could be established between earlier Mc in a kidney and later presence in PBMC. Finally, several years after female kidney transplantation, male Mc was totally cleared from PBMC in all women tested but one. This intriguing and striking initial result of natural and iatrogenic male Mc persistence in peripheral blood from women with ESRD raises several hypotheses for the possible role of these cells in renal diseases. Further studies are needed to elucidate mechanisms of recruitment and persistence of Mc in women with ESRD
Adhesion of the human pathogen Sporothrix schenckii to several extracellular matrix proteins
Transplante simultâneo de pâncreas-rim em portador de diabetes mellitus tipo 1 com insuficiência renal crônica: experiência inicial do Hospital Angelina Caron
World experience after more than a decade of clinical hand transplantation: Update on the French program
The first hand transplantation was realized in Lyon and the results achieved in this case showed the feasibility of the surgical technique, the efficacy of the immunosuppressive protocol, the limited adverse effects and the importance of a patient's compliance and rehabilitation to ensure graft viability and functional recovery. Based on these findings and the positive results achieved in other single hand transplants realized around the world the authors performed also the first double hand transplantation, then followed by other four cases. The recipients received the same immunosuppressive treatment including tacrolimus, prednisone, mycophenolate mofetil and antithymocyte globulins for induction, nevertheless they showed some episodes of acute rejection episodes which reversed after a prompt treatment. All the bilateral hand grafted patients showed a relevant sensorimotor recovery particularly of sensibility and activity of intrinsic muscles. They were able to perform the majority of daily activities and to lead a normal social life. On the basis of the authors' experience the results achieved in hand allotransplantation are very encouraging as major adverse effects due to surgery and immunosuppressive regimen did not occur and patients' quality of life improved considerably
The International Registry on Hand and Composite Tissue allotransplantation
The International Registry on Hand and Composite Tissue Transplantation includes hand and face allotransplantations: 39 patients who received 57 upper extremity transplantations (18 bilateral and 21 single transplantations--17 right and 4 left allografted hands); and 15 cases of partial or total face allotransplantation. The recipients of upper extremity allotransplantations are: 32 males and 7 females, median age 32 years. In 57.9% of cases, the level of amputation was at the wrist. The followup periods range from 6 months to 13 years. The recipients of face allotransplantations are: 12 males and 3 females, median age 34 years. In the majority of cases, the deficit included cheek, nose, chin, lips, and perioral area. The patients presented impairment of swallowing, eating, and speaking. The follow-up periods range from 8 months to 6 years. In hand and face transplantation, the imunosuppressive therapy included: tacrolimus, mycophenolate mofetil, and steroids. Polyclonal or monoclonal antibodies were used for induction. Within the first post-transplant year, eighty-five percent of hand and face recipients experienced at least one episode of acute rejection, which was reversible when promptly treated. Side-effects included: opportunistic infections, metabolic complications, and malignancies. Hand-grafted patients developed protective sensibility: 90% of them tactile sensibility and 82.3% also a discriminative sensibility. Motor recovery enabled patients to perform most daily activities. Face-grafted patients improved their aesthetic aspects and enhanced some activities such as eating, drinking, and speaking, living a normal social life. Five upper allotransplantation losses occurred. One of these patients who underwent simultaneous face and bilateral hand transplantation died on day 65. Hand and face transplantations are successful procedures, however, careful evaluation of patients before and after transplantation, and their compliance are indispensable
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