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1.
Am J Transplant ; 7(7): 1683-8, 2007 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-17532749

RESUMO

Joseph Murray performed the first successful human kidney transplant on December 23, 1954. Forty-three years later, he along with participants Francis Moore and Leroy Vandam, commissioned a painting of the event from artist Joel Babb (1). To document this unique record of medical history, we identify all those present at the operation and depicted in the portrait, describe how the artist created the work, explain irregularities and inaccuracies in the painting, provide a 50-year follow-up on everyone involved, and comment on any influence this landmark event may have had on their subsequent careers.


Assuntos
Transplante de Rim/história , Pinturas , História do Século XX , Humanos , Estados Unidos
6.
Ann Surg ; 234(6): 732-40, 2001 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11729379

RESUMO

OBJECTIVE: To improve the quality of organs from brain-dead donors by assessing the influence of alternative strategies on the early behavior of kidneys after transplantation into unmodified hosts. SUMMARY BACKGROUND DATA: Kidneys transplanted from living donors perform consistently better than those from cadaver sources. The authors have recently shown that donor brain death produces inflammatory changes in peripheral organs within hours, amplifies coincident ischemia-reperfusion injury, and accelerates acute and chronic rejection. Normalization of the graft by donor hormone treatment has hitherto been unsuccessful. METHODS: A standardized rat model of brain death was used. Experimental groups included recipients of allogeneic grafts from living and brain-dead donors (F344-->LEW). Donors were treated immediately after induction of brain death either with intravenous steroids, which block inflammatory cytokine release, or a soluble P-selectin glycoprotein ligand (sPSGL), which blocks initial selectin-mediated cellular adhesion. Kidney grafts were examined serially up to 10 days by morphology, immmunohistology, and reverse transcriptase-polymerase chain reaction. RESULTS: Overall survival of ummodified recipients of kidneys from brain-dead donors was significantly reduced versus living donors. Animals with organs from brain-dead donors that had received steroids or sPSGL survived significantly longer than those from untreated brain-dead donors. The intensity of ischemia-reperfusion injury and of acute rejection was reduced. Cellular infiltration and transcription of mRNA of representative proinflammatory mediators were diminished. CONCLUSIONS: Treatment of organ donors at the time of brain death markedly improves organ quality after kidney transplantation, upgrading it to that from a living donor.


Assuntos
Morte Encefálica , Glucocorticoides/farmacologia , Transplante de Rim , Rim/efeitos dos fármacos , Glicoproteínas de Membrana/farmacologia , Doadores de Tecidos , Animais , Antígenos CD/análise , Citocinas/análise , Citocinas/genética , Sobrevivência de Enxerto , Antígenos HLA-D/análise , Imuno-Histoquímica , Rim/química , Rim/patologia , Masculino , Reação em Cadeia da Polimerase , Ratos , Ratos Endogâmicos F344 , Ratos Endogâmicos Lew
7.
Transplantation ; 71(5): 591-3, 2001 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-11292284

RESUMO

Clinical organ transplantation has evolved through advances in patient care in parallel with investigations in associated biologies. It has developed from a cottage industry to an important medical specialty driven increasingly by the availability of newer and more effective immunosuppressive drugs, and dependent on consistently close collaborations between university-based clinical scientists and the pharmaceutical industry. Particularly during the past decade, however, this industry has undergone striking changes, consolidating into huge multi-national corporations, each competing for patients, their doctors, and for support of the allied hospitals. Because of the growth of "Big Pharma," the relationship between academia and industry has changed. There have been many advantages to such mutually dependent interactions. A combination of university-based expertise and the specialized knowledge and resources of industry have produced important scientific gains in drug development. Commercial sponsorship of applied research has been crucial. The orchestration of multicenter controlled clinical drug trials has provided invaluable information about the effectiveness of newer agents. But there are also disadvantages of increasing concern. Indeed, the power of "Big Pharma" in many medical fields including transplantation is such that presentation of data can be delayed, adverse results withheld, and individual investigations hampered. Clinical trials may be protracted to stifle competition. Monetary considerations may transcend common sense. Several measures to enhance the clinical relationship between the pharmaceutical industry and those involved with organ transplantation are suggested, particularly the use of third party advisors in the production of clinical trials, support for more basic research and in the dissemination of results. In this way, the increasingly problematic phenomenon of commercialization of the field of transplantation can be tempered and controlled.


Assuntos
Indústria Farmacêutica/tendências , Transplante de Órgãos/tendências , Humanos , Apoio à Pesquisa como Assunto
15.
Circulation ; 102(19): 2426-33, 2000 Nov 07.
Artigo em Inglês | MEDLINE | ID: mdl-11067799

RESUMO

BACKGROUND: Donor brain death upregulates expression of inflammatory mediators in the heart. It is hypothesized that these nonspecific changes trigger and amplify acute rejection in unmodified recipients compared with hearts from normal living donors. We examined the inflammatory and immunological consequences of gradual-onset donor brain death on cardiac allografts after transplantation. METHODS AND RESULTS: Functioning hearts were engrafted from normotensive donors after 6 hours of ventilatory support. Hearts from brain-dead rats (Fisher, F344) were rejected significantly earlier (mean+/-SD, 9. 3+/-0.6 days) by their (Lewis) recipients than hearts from living donor controls (11.6+/-0.7 days, P=0.03). The inflammatory response of such organs was accelerated, with rapid expression of cytokines, chemokines, and adhesion molecules and brisk infiltration of associated leukocyte populations. Upregulation of major histocompatibility class II antigens increased organ immunogenicity. Acute rejection evolved in hearts from brain-dead donors more intensely and at a significantly faster rate than in controls. CONCLUSIONS: Donor brain death is deleterious to transplanted hearts. The resultant upregulation of inflammatory factors provokes host immune mechanisms and accelerates the acute rejection process in unmodified hosts.


Assuntos
Morte Encefálica/imunologia , Rejeição de Enxerto/imunologia , Transplante de Coração/imunologia , Miocárdio/imunologia , Doadores de Tecidos , Animais , Quimiocinas/biossíntese , Quimiocinas/imunologia , Citocinas/biossíntese , Citocinas/imunologia , Modelos Animais de Doenças , Antígenos de Histocompatibilidade Classe II/imunologia , Ratos , Ratos Endogâmicos F344 , Transplante Homólogo/imunologia , Regulação para Cima
16.
J Appl Physiol (1985) ; 89(5): 1681-9, 2000 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11053314

RESUMO

The replacement of diseased organs and tissues by the healthy ones of others has been a unique milestone in modern medicine. For centuries, transplantation remained a theme of fantasy in literature and the arts. Within the past five decades, however, it has developed from a few isolated attempts to salvage occasional individuals with end-stage organ failure to a routine treatment for many patients. In parallel with the progressive improvements in clinical results has come an explosion in immunology, transplantation biology, immunogenetics, cell and molecular biology, pharmacology, and other relevant biosciences, with knowledge burgeoning at a rate not dreamed of by the original pioneers. Indeed, there have been few other instances in modern medicine in which so many scientific disciplines have contributed in concert toward understanding and treating such a complex clinical problem as the failure of vital organs. The field has been a dramatic example of evolution from an imagined process to an accepted form of therapy.


Assuntos
Alergia e Imunologia/história , Transplante/história , Animais , História do Século XVIII , História do Século XIX , História do Século XX , História Antiga , Humanos , Imunologia de Transplantes
17.
Curr Opin Immunol ; 12(5): 517-21, 2000 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11007353

RESUMO

Chronic rejection remains the major obstacle to long-term allograft survival. Detailed understanding of putative etiologic risk factors, both antigen-dependent and -independent, is important for designing effective therapeutic strategies to ameliorate this process. Cell senescence may be an important factor in chronic rejection.


Assuntos
Rejeição de Enxerto/etiologia , Animais , Senescência Celular , Teste de Histocompatibilidade , Humanos , Isoantígenos/imunologia , Fatores de Risco
19.
Ann Surg ; 232(2): 263-71, 2000 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-10903606

RESUMO

OBJECTIVE: To define the potential influences of donor brain death on organs used for transplantation. SUMMARY BACKGROUND DATA: Donor brain death causes prompt upregulation of inflammatory mediators on peripheral organs. It is hypothesized that this antigen-independent insult may influence the rate and intensity of host alloresponsiveness after engraftment. METHODS: The rates of survival of unmodified Lew recipients sustained by kidney allografts from brain-dead, normal anesthetized, and anesthetized ventilated F344 donors were compared. Brain death was induced by gradually increasing intracranial pressure under electroencephalographic control. Tracheotomized brain-dead animals and anesthetized controls were mechanically ventilated for 6 hours before transplant nephrectomy. The rate and intensity of the acute rejection event were examined by histology, immunohistology, and reverse transcriptase-polymerase chain reaction. RESULTS: Animals bearing kidneys from brain-dead donors died of renal failure secondary to acute rejection at a significantly faster rate than those from anesthetized living controls or anesthetized animals ventilated for 6 hours. Within 3 hours after placement and reperfusion of brain-dead donor grafts, significant neutrophil infiltration was observed, followed by increasing numbers of macrophages and T cells. mRNA of proinflammatory mediators detected in kidneys within 6 hours of brain death and upregulated even before transplantation increased thereafter and appeared to accelerate and amplify host alloresponsiveness, as manifested by the rapid expression of chemokines, cytokines, adhesion molecules, and major histocompatibility complex class II antigens in the engrafted organ. The process evolved in the controls less intensely and at a slower rate. CONCLUSIONS: Donor brain death is a significant risk factor for peripheral organs used for transplantation. The activated state of such organs appears to trigger host immune mechanisms that accelerate the process of acute rejection. The effects of this central injury may explain in part the less satisfactory performance of cadaver organs in human transplantation compared with those from living sources.


Assuntos
Morte Encefálica/imunologia , Rejeição de Enxerto/imunologia , Transplante de Rim , Animais , Sobrevivência de Enxerto , Rim/imunologia , Rim/patologia , Rim/fisiopatologia , Transplante de Rim/imunologia , Transplante de Rim/patologia , Transplante de Rim/fisiologia , Masculino , Ratos , Ratos Endogâmicos F344 , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Fatores de Tempo , Doadores de Tecidos
20.
Kidney Int ; 57(6): 2618-25, 2000 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-10844632

RESUMO

BACKGROUND: We sought to assess the effects of angiotensin receptor blockade on glomerular hypertension, macrophage recruitment, and cytokine expression, all of which contribute to the development of chronic graft injury in this model. METHODS: The effects of treatment with the specific angiotensin II type 1 (AT1) receptor antagonist, losartan, were assessed over 24 weeks in F344-->LEW rats (LOS, N = 9) versus vehicle-treated F344-->LEW controls (CON, N = 9). RESULTS: UprotV rose progressively in CON (from 7.0 +/- 2.9 to 41 +/- 17 mg/day at 24 wk) but remained at baseline in LOS (4.2 +/- 0.6 to 9.4 +/- 1.3 mg/day, P < 0.05 vs. CON). Glomerular capillary pressure (PGC) was increased in CON (71 +/- 1 mm Hg at week 20), but remained within the normal range in LOS rats (54 +/- 2 mm Hg, P < 0.05). Glomerulosclerosis averaged 0.3 +/- 0.2% in LOS versus 4 +/- 2% in CON rats (P < 0.05). Tubulointerstitial injury was minimal in both LOS and CON rats (+). The overexpression of renal cortical cytokine mRNA levels for the monocyte chemoattractants, monocyte chemoattractant protein-1 (MCP-1) and RANTES, as well as interleukin-1, inducible nitric oxide synthase, and transforming growth factor-beta, assessed by competitive reverse transcription-polymerase chain reaction, was suppressed in LOS versus CON rats at 20 weeks. Macrophage and T-cell numbers were decreased, and MCP-1, RANTES, and intercellular adhesion molecule-1 staining in the graft, identified by immunohistochemistry, were attenuated in LOS versus CON rats. CONCLUSIONS: The renoprotective effects of losartan in F344-->LEW rats were associated with lowered PGC, inhibition of macrophage chemoattractants and recruitment, and suppression of macrophage-associated cytokines at 20 weeks. These findings suggest that chronic allograft injury in F344-->LEW rats is, to a large extent, mediated by angiotensin II-dependent mechanisms and that these involve glomerular hemodynamics, macrophages, and macrophage-associated cytokines.


Assuntos
Transplante de Rim , Losartan/uso terapêutico , Antagonistas de Receptores de Angiotensina , Animais , Citocinas/metabolismo , Rejeição de Enxerto/metabolismo , Hemodinâmica , Rim/metabolismo , Rim/patologia , Rim/fisiopatologia , Glomérulos Renais/irrigação sanguínea , Masculino , Ratos , Ratos Endogâmicos F344 , Ratos Endogâmicos Lew , Receptor Tipo 1 de Angiotensina , Receptor Tipo 2 de Angiotensina , Transplante Homólogo
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