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1.
Am J Transplant ; 17(7): 1935-1940, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28141920

RESUMEN

Ten years after the first face transplantation, we report the partial loss of this graft. After two episodes of acute rejection (AR) occurred and completely reversed in the first posttransplantation year, at 90 months posttransplantation the patient developed de novo class II donor-specific antibodies, without clinical signs of AR. Some months later, she developed several skin rejection episodes treated with steroid pulses. Despite rapid clinical improvement, some months later the sentinel skin graft underwent necrosis. Microscopic examination showed intimal thickening, thrombosis of the pedicle vessel, and C4d deposits on the endothelium of some dermal vessels of the facial graft. Flow magnetic resonance imaging of the facial graft showed a decrease of the distal right facial artery flow. Three steroid pulses of 500 mg each, followed by intravenous immunoglobulins (2 g/kg), five sessions of plasmapheresis, and three cycles of bortezomib 1.3 mg/m2 , were administered. Despite rescue therapy with eculizumab, necrosis of the lips and the perioral area occurred, which led to surgical removal of the lower lip, labial commissures, and part of the right cheek in May 2015. In January 2016, the patient underwent conventional facial reconstruction because during the retransplantation evaluation a small-cell lung carcinoma was discovered, causing the patient's death in April 2016.


Asunto(s)
Trasplante Facial/efectos adversos , Rechazo de Injerto/terapia , Complicaciones Posoperatorias/prevención & control , Adulto , Femenino , Rechazo de Injerto/etiología , Rechazo de Injerto/patología , Supervivencia de Injerto , Humanos , Inmunoglobulinas Intravenosas/administración & dosificación , Isoanticuerpos/sangre , Plasmaféresis , Pronóstico , Reoperación , Factores de Tiempo
2.
Am J Transplant ; 11(4): 808-16, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21446980

RESUMEN

Composite tissue allotransplantations (CTAs) have clinically shown little, if any, evidence of chronic rejection. Consequently, the effect of chronic rejection on bones, joints, nerves, muscles, tendons and vessels may still have undescribed implications. We thoroughly assessed all allograft structures by histology, magnetic resonance imaging, ultrasonography and high resolution peripheral quantitative computed tomography scan in four bilateral hand-grafted patients (10, 7, 3 and 2 years of follow-up, respectively) and in one facial allotransplantation (5 years of follow-up). All the recipients presented normal skin structure without dermal fibrosis. Vessels were patent, without thrombosis, stenosis or intimal hyperplasia. Tendons and nerves were also normal; muscles showed some changes, such as a variable degree of muscular hypotrophy, particularly of intrinsic muscles, accompanied by fatty degeneration that might be related to denervation. In the majority of hand-grafted patients graft radius and recipient tibia showed a decrease in trabecular density, although in the graft radius the alterations also involved the cortices. No deterioration of graft function was noted. In these cases of CTA no signs of chronic graft rejection have been detected. However, the possibility that chronic rejection may develop in CTA exists, highlighting the necessity of close continuous follow-up of the patients.


Asunto(s)
Cara/cirugía , Trasplante de Mano , Trasplante de Órganos , Adolescente , Adulto , Cara/patología , Femenino , Estudios de Seguimiento , Rechazo de Injerto , Supervivencia de Injerto , Mano/patología , Humanos , Masculino , Persona de Mediana Edad , Trasplante Homólogo , Adulto Joven
3.
Ann Chir Plast Esthet ; 55(5): 452-60, 2010 Oct.
Artículo en Francés | MEDLINE | ID: mdl-20884105

RESUMEN

Is innovation breaking of the way of thinking, breaker of taboos, concretisation of chimeras or simple benefit of an ineluctable evolution? The surgical act should be considered as innovation itself? From the first facial allotransplantation, innovation is declined in various ways, which could constitute the different answers regarding the planning and management to prepare such surgery, the realisation of the transplantation and also the multiple developments in terms of science and medicine. It is exactly in that meaning that could be really mentioned the term archetypal.


Asunto(s)
Trasplante Facial/métodos , Microcirugia/métodos , Humanos
4.
Diabetes ; 38 Suppl 1: 16-7, 1989 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-2642842

RESUMEN

Between January 1985 and September 1987, we performed a prospective comparative study between segmental-pancreas transplantation with duct obstruction by neoprene (n = 17) and pancreaticoduodenal transplantation with enteric diversion to a Roux-en-Y intestinal loop (n = 14). All recipients had insulin-dependent diabetes. The immunosuppressive protocol consisted of low doses of the steroids cyclosporin A and azathioprine. Mean follow-up was 16.5 mo for the enteric-diversion group and 13.5 mo for duct-obstructed groups. Two-year patient and pancreas- and kidney-graft actuarial survival rates were 92.9, 75.5, and 74.2%, respectively, in the former group and 92.3, 58.4, and 63.7%, respectively, in the latter group (NS). Five whole-organ grafts were lost (3 vascular thromboses, 1 pancreatitis, 1 rejection), and four segmental grafts were lost (2 vascular thromboses, 1 bleeding, 1 patient's death with functional graft). More surgical complications occurred in the recipients of whole-organ grafts and were often related to the intestinal anastomosis. A satisfactory blood glucose control was observed at 3 mo and 1 yr in both groups. Provocative tests showed higher and prompter insulin secretion in patients with whole-organ grafts. In patients with segmental grafts, the response was lower and delayed with a general tendency to impaired glucose tolerance. A marked hyperinsulinemia after meals was observed in whole-organ graft recipients. Slight nocturnal hyperinsulinemia was observed in both groups. At 1 yr, glycosylated hemoglobin was normal in both groups. The absence of a significant difference between the two groups, in terms of survival and graft function, and the lower surgical complication rate seen with segmental grafts have made us return to neoprene-injected segmental grafts.


Asunto(s)
Duodeno , Trasplante de Páncreas , Ritmo Circadiano , Diabetes Mellitus Tipo 1/cirugía , Supervivencia de Injerto , Humanos , Terapia de Inmunosupresión , Insulina/sangre , Trasplante de Riñón , Conductos Pancreáticos/cirugía , Estudios Prospectivos
5.
Diabetes ; 38 Suppl 1: 30-2, 1989 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-2642852

RESUMEN

Since November 1975, 103 pancreas transplantations have been performed in 97 insulin-dependent diabetic patients. Pancreas and kidney were grafted simultaneously in 84 patients (plus 1 double retransplantation). Eighty-nine pancreas grafts were prepared by duct obstruction with neoprene, and 14 were pancreaticoduodenal grafts with enteric diversion in a Roux-en-Y loop. Five immunosuppressive protocols were subsequently used. With the latest protocols, patient and pancreas survival improved to 93 and 72% at 1 yr, respectively. The improvement in graft survival appeared to be particularly related to the reduction of the number of pancreas grafts lost in rejection. The patients treated with the last protocols, including cyclosporin A (CsA) and only low doses of steroids, showed a better glucose tolerance after provocative tests. Pancreas-graft function did not appear to be influenced by CsA treatment.


Asunto(s)
Terapia de Inmunosupresión , Trasplante de Páncreas , Suero Antilinfocítico/uso terapéutico , Azatioprina/uso terapéutico , Ciclosporinas/uso terapéutico , Duodeno/patología , Prueba de Tolerancia a la Glucosa , Supervivencia de Injerto , Humanos , Trasplante de Riñón , Neopreno
6.
Diabetes ; 38 Suppl 1: 38-9, 1989 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-2642854

RESUMEN

Patient and kidney survival rates were compared between 69 diabetic patients undergoing simultaneous kidney-pancreas transplantation (group 1) and 723 nondiabetic patients undergoing kidney transplantation (group 2). The patients were treated with different immunosuppressive regimens over the years: steroids plus antilymphocyte globulin (ALG) plus azathioprine (Aza); cyclosporin A (CsA) plus ALG; steroids plus ALG plus Aza, replacing Aza 1 mo posttransplantation; or low doses of steroids plus CsA plus Aza. One-year kidney survival rates with the different regimens were 50, 42, 54, and 76%, respectively, in group 1 and 71, 74, 78, and 84%, respectively, in group 2. Patient survival was 60, 57, 71, and 86%, respectively, in group 1 and 93, 95, 94, and 96%, respectively, in group 2. Differences between the two groups were statistically significant for the first three protocols but not for the one used in this study. In group 1, 38 patients (55%) had a functioning kidney graft, whereas 15 (21%) lost their kidney to rejection. Between these two patient categories, there was no significant difference in age, sex, duration of diabetes, time on dialysis, blood transfusion number, HLA immunization, or HLA matching. Thus, since 1984, kidney-graft survival has not been inferior in diabetic patients. This improvement is mainly due to a decreased mortality related to better patient preparation and improvement in immunosuppression.


Asunto(s)
Supervivencia de Injerto , Trasplante de Riñón , Trasplante de Páncreas , Humanos , Terapia de Inmunosupresión
7.
Diabetes ; 38 Suppl 1: 82-4, 1989 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-2642861

RESUMEN

The aim of this study was to investigate a possible reenhancement of islet cell autoimmunity in type I (insulin-dependent) diabetic patients who received HLA-mismatched pancreas transplants from cadaveric donors and who underwent generalized immunosuppression. Circulating islet cell antibodies (ICA) and complement-fixing ICAs (CF-ICAs) have been tested at 1, 2, 3, 6, and 12 mo and at least once a year posttransplantation in 23 recipients of 25 transplants (22 simultaneous with kidney, 2 retransplants, 1 isolated; 23 segmental neoprene injected, 2 whole with enteric drainage). Patients were aged 35.3 +/- 1.9 yr with a duration of diabetes of 20.6 +/- 1.1 yr. Immunosuppression consisted of double or triple association of azathioprine, cyclosporin, and prednisone with or without temporary antilymphocyte globulins. The number of HLA-A and HLA-B compatibilities was none in 8 patients, one in 12 patients, two in 4 patients, and three in 1 patient. The mean follow-up was 4.0 +/- 0.4 yr/patient (range 0.4-7.2). ICAs were positive pretransplantation in 2 of 25 patients and reappeared 1-42 mo posttransplantation in another 7. In 6 patients, CF-ICAs were also positive. In 7 of 9 ICA+ patients the pancreas transplant failed; in 1 patient this occurred 4 mo before ICA reappearance, and in 6 patients it occurred 2-35 mo after the first detection of ICAs. Pancreas-transplant failure was significantly associated with the positivity for ICAs (P less than .05) and particularly for CF-ICAs (P less than .005). ICA positivity was transitory in 4 patients (2-27 mo) and persistent in the remaining 5 (up to 61 mo).(ABSTRACT TRUNCATED AT 250 WORDS)


Asunto(s)
Autoanticuerpos/análisis , Diabetes Mellitus Tipo 1/inmunología , Antígenos HLA/análisis , Islotes Pancreáticos/inmunología , Trasplante de Páncreas , Adulto , Pruebas de Fijación del Complemento , Femenino , Prueba de Histocompatibilidad , Humanos , Trasplante de Riñón , Masculino , Persona de Mediana Edad
8.
Transplantation ; 51(4): 777-81, 1991 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-1849672

RESUMEN

The role of platelet transfusion as a preparative method for kidney transplantation is still a matter of debate. Two groups of 28 male patients transplanted between 1983 and 1988, paired for age, date of transplant, absence of anti-HLA antibody and immunosuppressive therapy have been compared. Group I was given 5 purified platelet transfusions at 1-week intervals before transplantation. Each transfusion contained 7.6 x 10(6) platelets contaminated by less than 1 leukocyte in 10(5) platelets. Group II received from 3 to 5 whole blood transfusions. In all cases it was a first transplant from cadaveric donors and previously untransfused patients before entering the protocol. No patient in group I developed cytotoxic antibodies. Acute tubular necrosis occurred with the same incidence in group I and in group II but was more severe and longer in group I, requiring hemodialysis in 62.5% and only 22% in group II. ATN was significantly associated with graft loss in group I (P less than 0.05). The total number of rejections and the number of patients undergoing rejection were not significantly different in both groups. However, the intensity of rejection was significantly higher in group I with 41% (21/51) of severe or irreversible rejections versus 9/46 (19.5%) in group II (P less than 0.05). The first rejection occurred significantly earlier in group I than in group II since 75% of the first rejection episodes occurred in the first 10 days versus 38% in group II (P less than 0.02) with a mean delay of 12.8 +/- 3.2 and 19.10 +/- 3.3 days, respectively. Although platelet transfusions are devoid of leukocytes the incidence of CMV infection was not significantly different in both groups: 57% in group I and 68% in group II. Purified platelet transfusions did not induce humoral immunization but lack of sensitization does not imply indefinite graft prolongation. Because platelets do not carry class II antigens, purified platelets transfusions represent a useful model to analyze the role of class I antigens alone in the induction of unresponsiveness in organ transplantation.


Asunto(s)
Transfusión Sanguínea/normas , Trasplante de Riñón , Transfusión de Plaquetas , Adulto , Anticuerpos Antivirales/análisis , Citomegalovirus/inmunología , Infecciones por Citomegalovirus/etiología , Rechazo de Injerto , Supervivencia de Injerto , Humanos , Riñón/fisiología , Masculino , Persona de Mediana Edad , Reacción a la Transfusión
9.
Transplantation ; 45(2): 389-94, 1988 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-3278433

RESUMEN

Clinical evolution and cyclosporine (CsA) monitoring of 65 transplanted patients (55 kidneys, and 10 kidneys and pancreases) treated with CsA were analyzed retrospectively (45 patients) and prospectively (34 patients). Our results showed the following: (1) nephrotoxicity is not uncommon even with low trough plasma levels of CsA; (2) the T6 value of a CsA pharmacokinetic plasma curve (6 hr after oral drug administration) is a valid expression of a full pharmacokinetic study; (3) when T6 was used prospectively as a monitoring tool and dose adjustments made disregarding concomitant serum creatinine levels, the latter decreased when CsA dose adjustments were made to correct toxic (greater than 350 ng/ml) or subtherapeutic (less than 100 ng/ml) T6, P less than 0.01. At present, serum creatinine for all our patients is 180.2 +/- 8 mumol/L, and no patient has needed to be switched to conventional treatment. The validity of trough plasma levels in patients under CsA oral administration once or twice a day seems questionable, and T6 proved to be more useful. Thus nephrotoxicity and CsA undertreatment may be avoided. This new monitoring tool (T6) will allow the utilization of lower doses of CsA and thus contribute to improved long-term graft function.


Asunto(s)
Ciclosporinas/sangre , Trasplante de Riñón , Trasplante de Páncreas , Administración Oral/métodos , Adulto , Creatinina/sangre , Ciclosporinas/efectos adversos , Ciclosporinas/farmacocinética , Esquema de Medicación , Femenino , Rechazo de Injerto/efectos de los fármacos , Humanos , Riñón/efectos de los fármacos , Masculino , Persona de Mediana Edad , Periodo Posoperatorio , Estudios Prospectivos , Estudios Retrospectivos , Orina/enzimología
10.
Transplantation ; 51(3): 625-9, 1991 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-2006518

RESUMEN

We have investigated the metabolic effects of segmental (neoprene-injected) pancreas transplantation versus whole (enteric-diverted) pancreas transplantation. Seventeen uremic insulin-dependent diabetes mellitus (IDDM) patients received a simultaneous pancreaticorenal transplant: in a prospective, randomized study, 9 patients received a segmental neoprene-injected graft (group A) while 8 patients received a total pancreaticoduodenal graft, with enteric diversion (group B). The immunosuppressive therapy was based on ALG, CsA, azathioprine, and steroids. Three months after surgery, patients were submitted to the following metabolic investigation: i.v. and oral glucose tolerance tests, Hba1, i.v. arginine test, and a 24-hr metabolic profile. The OGTT, HbA1, and metabolic profile were repeated 12 and 24 months after transplantation. At 3 months after transplantation, the OGTT showed delayed insulin secretion and higher blood glucose levels in group A. Serum insulin levels after IVGTT or arginine were higher in group B than in group A. OGTT at 12 and 24 months were unchanged in group B, while in group A a higher incidence of impaired glucose tolerance (IGT) and diabetes mellitus response were observed. HbA1 and blood glucose levels during the 24-hr profile showed good metabolic control in both groups at 3, 12, and 24 months. We can conclude that both the segmental and total pancreas transplantation restore a good metabolic control in IDDM patients, though a higher incidence of IGT and DM responses were observed after OGTT in the patients receiving a segmental graft. These abnormalities do not seem to interfere with metabolic control in everyday life. These results seem to be the consequence of the different B cell masses transplanted with these two techniques.


Asunto(s)
Glucemia/metabolismo , Diabetes Mellitus Tipo 1/cirugía , Insulina/sangre , Trasplante de Páncreas/fisiología , Adulto , Arginina , Estudios de Cohortes , Diabetes Mellitus Tipo 1/sangre , Nefropatías Diabéticas/sangre , Nefropatías Diabéticas/cirugía , Estudios de Seguimiento , Prueba de Tolerancia a la Glucosa , Hemoglobina Glucada/análisis , Humanos , Fallo Renal Crónico/sangre , Fallo Renal Crónico/cirugía , Trasplante de Riñón/fisiología , Trasplante de Páncreas/métodos , Trasplante Homólogo
11.
Transplantation ; 35(4): 344-8, 1983 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-6340290

RESUMEN

Pancreatic transplantation is intended to normalize carbohydrate metabolism in insulin-dependent diabetics by restoring endogenous insulin release, and it is usually performed together with kidney transplantation in patients with end-stage renal failure. A major problem in these patients is the daily control of the grafted pancreas because traditional measurements do not appear to be adequate to evaluate pancreatic function. Aiming at early detection of graft failure, we have analyzed in 8 such patients and in 20 nondiabetic kidney-grafted patients (a control group) the following variables: 24-hr glycosuria (absolute values, or values after natural logarithmic transformation) and 24-hr urinary C-peptide excretion (corrected for 24-hr urinary creatinine). These measurements, considered alone, did not detect pancreatic graft failure; for instance, glycosuria can depend on immunosuppressive steroid treatment, and it was often found even in the control group. On the contrary, the ratio Ln 24-hr glycosuria: 24-hr urinary C-peptide varied from 0.00 to 0.18 in the control group and in normally working pancreatic grafts; when the pancreatic grafts failed, however, as confirmed by arteriographic evidence, histologic findings, or dynamic endocrine tests, this ratio rose far higher than 0.18, reaching values as high as 12.2. Use of this ratio provides a simple technique for daily evaluation of pancreatic graft function and for early detection of graft failure.


Asunto(s)
Trasplante de Páncreas , Diabetes Mellitus/cirugía , Rechazo de Injerto , Humanos , Trasplante de Riñón , Enfermedades Pancreáticas/diagnóstico , Pruebas de Función Pancreática
12.
Transplantation ; 69(7): 1380-5, 2000 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-10798758

RESUMEN

BACKGROUND: On September 1998, the first human hand allograft was successfully performed in Lyon. METHODS: A 48-year-old white man who had suffered accidental amputation of the arm in 1984, received a forearm and hand allograft from a 42-year-old white male cadaveric heart-beating donor. Immunosuppressive therapy included prednisone, mycophenolate mofetil, FK506, and antithymocyte globulins. Sequential skin biopsies were taken from the grafted limb and examined (immuno)histologically to detect a possible graft rejection and to evaluate the structural integrity of the skin of the allograft. RESULTS: The skin showed histologically a normal appearance, except on days 57 and 63, when a mononuclear perivascular cell infiltrate was observed in the dermis; this appeared concomitantly with erythematous lesions of the skin that developed after a slight decrease of the immunosuppressive treatment. These changes were considered as signs of graft rejection, and were reversed by an increase of the immunosuppressive treatment. No skin necrosis was seen at any time. Immunohistochemically, the main cell types of the skin were present throughout the study. From day 77 onward the epidermis of the grafted hand harbored some epidermal Langerhans cells of recipient's origin. CONCLUSION: This study shows that the skin of the hand allograft maintains overall a normal histological structure and contains most essential cell types, including cells of recipient origin, such as Langerhans cells. Furthermore, it shows that in this system of composite tissue transplantation, skin biopsies may reveal a starting graft rejection, before the appearance of clinically obvious lesions.


Asunto(s)
Trasplante de Mano , Mano/patología , Piel/patología , Adulto , Biopsia , Relación Dosis-Respuesta a Droga , Eritema/etiología , Rechazo de Injerto/complicaciones , Rechazo de Injerto/tratamiento farmacológico , Rechazo de Injerto/patología , Humanos , Inmunohistoquímica , Inmunosupresores/administración & dosificación , Inmunosupresores/uso terapéutico , Células de Langerhans/patología , Masculino , Persona de Mediana Edad , Cuidados Posoperatorios
13.
Transplantation ; 69(1): 99-103, 2000 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-10653387

RESUMEN

BACKGROUND: Besides alloimmunity to transplanted pancreatic tissue, recurrent autoimmune beta cell destruction is an additional limitation to successful clinical pancreatic allografts in type 1 diabetic patients. METHODS: We studied the prevalence of autoantibodies to glutamate decarboxylase (GAD) 65 and tyrosine phosphatase (IA-2) in 68 C-peptide-negative diabetic patients receiving pancreatic allografts. Sera from patients were obtained immediately before grafting. A second blood sample was analyzed at the time of graft failure in patients who returned to hyperglycemia and during the same follow-up period in those who experienced a functional pancreatic allograft. Patients were classified according to clinical outcome into chronic graft failure (group A, n=20), acute graft failure and/or arterial thrombosis (n=7), or functional pancreatic graft (group C, n=41). Sera from patients were screened for the presence of specific autoantibodies using an islet cell autoantibody assay, a combi-GAD and IA-2 test, and individual GAD and IA-2 assays. RESULTS: Patients from group A had significantly higher combi-test values than patients from group C (13+/-16 vs. 4.5+/-12 units, P<0.02) and higher anti-GAD65 antibody (Ab) levels (0.19+/-0.3 vs. 0.04+/-0.13 units, P<0.01) immediately before grafting. After graft failure in group A, both anti-GAD65 and anti-IA-2 Ab levels increased from baseline, but only the increase in anti-IA-2 Ab levels reached statistical significance (0.28+/-0.12 vs. 15+/-34, P=0.03). When compared with group C, patients from group A had higher anti-GAD65 Abs (0.29+/-0.35 vs. 0.05+/-0.16, P<0.001) after graft failure. Interestingly, the number of double-Ab-positive patients rose from 5% to 35% in group A, whereas it remained at 5% in group C. In pancreatic transplants with bladder drainage, the presence of anti-GAD65 and/or anti-IA2 Abs was not associated with a reduction in urinary amylase levels. This suggests that a loss of endocrine function was not associated with exocrine failure in patients from group A. CONCLUSIONS: We can conclude from the present study that peripheral autoimmune markers are useful in diabetic patients receiving pancreatic allografts.


Asunto(s)
Autoanticuerpos/análisis , Diabetes Mellitus Tipo 1/patología , Diabetes Mellitus Tipo 1/cirugía , Islotes Pancreáticos/patología , Trasplante de Páncreas/inmunología , Adulto , Amilasas/orina , Biomarcadores/análisis , Péptido C/deficiencia , Diabetes Mellitus Tipo 1/orina , Femenino , Glutamato Descarboxilasa/inmunología , Humanos , Isoenzimas/inmunología , Masculino , Persona de Mediana Edad , Páncreas/fisiopatología , Proteína Tirosina Fosfatasa no Receptora Tipo 1 , Proteínas Tirosina Fosfatasas/inmunología , Recurrencia , Insuficiencia del Tratamiento , Resultado del Tratamiento
14.
Surgery ; 84(5): 633-9, 1978 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31008

RESUMEN

A new method of eliminating the exocrine function of the pancreas by obstruction of pancreatic duct with neoprene was investigated in dogs and applied to three cases of human segmental pancreatic transplantation. Neoprene is a liquid synthetic rubber which flocculates with changes in pH. In animals, progressive fibrosis of the pancreatic tissue occurs after injection of neoprene in the main pancreatic duct, leaving islets well vascularized and functioning for prolonged periods. Using this technique, three severely diabetic patients received a cadaver segmental pancreatic allograft. Blood sugar returned to normal levels within the first hours or days after operation. All three grafts continue to function 1.5, 2, and 8 months, respectively, following transplantation. If these results are confirmed by further clinical experience, this method may be of considerable assistance in the treatment of severe diabetes by pancreatic transplantation.


Asunto(s)
Trasplante de Páncreas , Adulto , Animales , Glucemia/metabolismo , Diabetes Mellitus/cirugía , Perros , Femenino , Humanos , Concentración de Iones de Hidrógeno , Masculino , Métodos , Neopreno , Páncreas/patología , Conductos Pancreáticos , Trasplante Homólogo
15.
Surgery ; 97(5): 529-34, 1985 May.
Artículo en Inglés | MEDLINE | ID: mdl-3887627

RESUMEN

From 1972 to 1983, 78 patients underwent surgical treatment for renovascular hypertension caused by a lesion limited to the trunk of the renal artery. Forty-five of these patients underwent aortorenal bypass (24 saphenous grafts and 21 arterial hypogastric grafts); 36 patients (80%) had either a relief of the hypertension or were improved. Graft closure occurred in five cases. Thirty-three patients were treated by autotransplantation of the kidney. After resection of the lesion, the renal artery was anastomosed end-to-end to the hypogastric artery or end-to-side to the common iliac artery and the renal vein and side-to-side to the iliac vein or the origin of the vena cava. In this group all patients but one (97%) had relief of the hypertension or were improved. No thrombosis was observed. Late angiography was performed 5 years after surgery in 19 patients (nine autotransplantations and 10 bypass operations): patients who underwent autotransplantation had no alteration of the renal vessels whereas four patients who underwent bypass operations had dilatation of the saphenous vein bypass. Renal autotransplantation was superior to the bypass technique in the surgical treatment of renovascular hypertension caused by lesions of the trunk of the renal artery and may represent a better alternative in the surgical treatment of this condition.


Asunto(s)
Hipertensión Renovascular/cirugía , Trasplante de Riñón , Arteria Renal/cirugía , Adolescente , Adulto , Anciano , Aorta/cirugía , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Trasplante Autólogo
16.
Kidney Int Suppl ; 11: S46-9, 1982 May.
Artículo en Inglés | MEDLINE | ID: mdl-6750210

RESUMEN

We describe 22 clinical cases of segmental pancreatic grafts that were prepared with neoprene injection in the pancreatic duct. Complete correction of the diabetes is obtained during the period of function of the graft. The surgical procedure is a safe one and does not lead to a higher surgical risk than the usual kidney transplantation. Progress should be made by early detection and effective treatment of the pancreatic graft rejection. Corticoids should be avoided to suppress the diabetogenic effect. Cyclosporine A will probably be the immunosuppressive of choice.


Asunto(s)
Diabetes Mellitus/cirugía , Nefropatías Diabéticas/cirugía , Fallo Renal Crónico/cirugía , Trasplante de Riñón , Trasplante de Páncreas , Adolescente , Adulto , Niño , Preescolar , Diabetes Mellitus/diagnóstico , Femenino , Rechazo de Injerto , Humanos , Masculino , Métodos , Persona de Mediana Edad , Neopreno , Conductos Pancreáticos
17.
Kidney Int Suppl ; (8): S103-7, 1978 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-357812

RESUMEN

Thoracic duct drainage resulting in a lymphocyte depletion of more than 20 x 10(9) cells was performed during the three months prior to transplantation in 37 patients. Results obtained in this group of patients were compared to those in transplant recipients similarly treated, over the same period, but not subjected to thoracic duct drainage. Both groups received comparable doses of antilymphocyte globulins, azathioprine and corticosteroids. No clear-cut difference in transplantation outcome was found when recipients of kidneys from related living donors (whether HLA identical or HLA haploidentical) were considered. By contrast, an improved transplant survival and a decreased incidence of rejection crises were observed in recipients of kidneys from cadaver donors when a thoracic duct drainage was performed prior to transplantation. The immunosuppressive effect of thoracic duct drainage, probably enhanced by antilymphocyte globulin treatment, is therefore a valuable adjunct to more conventional methods of pretreating human cadaveric transplant recipients.


Asunto(s)
Suero Antilinfocítico/uso terapéutico , Drenaje , Trasplante de Riñón , Depleción Linfocítica , Conducto Torácico/cirugía , Cadáver , Prueba de Histocompatibilidad , Humanos
18.
Diabetes Metab ; 24(3): 195-9, 1998 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-9690050

RESUMEN

Pancreatic transplantation is the best method of replacing the endocrine function of the gland in Type 1 insulin-dependent diabetic patients. At the end of 1996, 9,000 pancreas transplants had been reported to the international Pancreas Transplant Registry. For 1994-1996, one-year pancreas survival rates were 81% for simultaneous pancreas and kidney transplantation (n = 1,516), 71% for pancreas after kidney (n = 141) and 64% for pancreas alone (n = 64). In patients with a functional graft, glycosylated haemoglobin, fasting blood sugar, and 24-h metabolic profiles are normal. The effect of pancreatic transplantation on secondary complications often appears after several years of normal pancreatic function. Successful transplantation is associated with an improvement in different aspects of the quality of life. The decision to perform pancreatic transplantation depends on the balance between the risks of transplantation, mainly surgical or related to immunosuppression, and those of diabetes development. The advantages and drawbacks of pancreatic transplantation and insulin therapy need to be honestly and carefully analysed for specific populations of diabetic patients as well as for each individual. At present, simultaneous pancreaticorenal transplantation is the best treatment for diabetic patients with chronic renal failure. Transplantation of the pancreas alone in non-uraemic patients may also be considered in carefully selected subjects.


Asunto(s)
Diabetes Mellitus Tipo 1/cirugía , Terapia de Inmunosupresión , Trasplante de Páncreas , Nefropatías Diabéticas/cirugía , Humanos , Fallo Renal Crónico/cirugía , Resultado del Tratamiento
19.
Diabetes Metab ; 26(3): 215-8, 2000 May.
Artículo en Inglés | MEDLINE | ID: mdl-10880896

RESUMEN

Type 1 diabetes mellitus is considered as an autoimmune disease against beta cells. Diabetes recurrence after pancreas transplantation is well known in HLA-identical twins while it is rarely reported in recipients of cadaveric pancreatic grafts. In the present case report, diabetes recurrence occurred in a recipient who underwent cadaveric combined pancreas kidney transplantation. Seven years after transplantation the patient exhibited progressive hyperglycemia needing insulin therapy while the renal graft was well functioning. The diagnosis of recurrent disease was obtained on the histological features such as selective loss of beta cells without clear signs of insulitis and on the presence of markers (GAD 65 and IA-2) for humoral autoimmunity. It is intriguing that, at the time of recurrence of type 1 diabetes, the patient had stopped steroids and azathioprine, while only cyclosporine was maintained as immunosuppressive treatment. Our case report underlines the relevance of studying the humoral autoimmune response directed to islet autoantigens in cadaveric pancreas allograft recipients. Furthermore, it suggests that an efficient immunosuppressive treatment after transplantation may be able to reduce the autoimmune response against the pancreatic allograft.


Asunto(s)
Diabetes Mellitus Tipo 1/inmunología , Diabetes Mellitus Tipo 1/cirugía , Nefropatías Diabéticas/cirugía , Prueba de Histocompatibilidad , Fallo Renal Crónico/cirugía , Trasplante de Riñón/fisiología , Trasplante de Páncreas/inmunología , Adolescente , Adulto , Autoanticuerpos/sangre , Diabetes Mellitus Tipo 1/tratamiento farmacológico , Femenino , Rechazo de Injerto/inmunología , Rechazo de Injerto/patología , Humanos , Insulina/uso terapéutico , Trasplante de Páncreas/patología , Recurrencia , Reoperación , Donantes de Tejidos
20.
J Endourol ; 14(6): 519-28, 2000 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-10954310

RESUMEN

BACKGROUND AND PURPOSE: Criteria for determining the durability of the response to transrectal high-intensity focused ultrasound (HIFU) ablation of prostate cancer have been established by calculating progression-free probability. PATIENTS AND METHODS: A series of 82 patients (mean age 71 +/- 5.7 years) with biopsy-proven localized (stage T1-T2) cancer who were not suitable candidates for radical surgery underwent transfectal HIFU ablation with the Ablatherm machine. The mean follow-up was 17.6 months (range 3-68 months). The mean serum prostate specific antigen (PSA) value and mean prostate volume were 8.11 +/- 4.64 ng/mL and 34.9 +/- 17.4 cm3, respectively. Progression was rigidly defined as any positive biopsy result, regardless of PSA concentration, or three successive PSA increases for patients with a negative biopsy (PSA velocity > or = 0.75). Times to specific events (positive biopsy and PSA elevation) were analyzed with the Kaplan-Meier survival method. RESULTS: Overall, 62% of the patients exhibited no evidence of disease progression 60 months after transrectal HIFU ablation. In particular, the disease-free rate was 68% for the moderate-risk group of 50 patients (PSA < 15.0 ng/mL, Gleason sum < 8, prostate volume < 40 cm3, and number of positive biopsies < 5). For the low-risk group of 32 patients (PSA < 10 ng/mL and Gleason sum < 7), the disease-free survival rate was 83%. CONCLUSION: Transrectal HIFU prostate ablation is an effective therapeutic alternative for patients with localized prostatic adenocarcinoma.


Asunto(s)
Adenocarcinoma/terapia , Neoplasias de la Próstata/terapia , Terapia por Ultrasonido , Ultrasonografía Intervencional/métodos , Adenocarcinoma/patología , Anciano , Progresión de la Enfermedad , Humanos , Masculino , Antígeno Prostático Específico/análisis , Neoplasias de la Próstata/patología , Factores de Riesgo , Resultado del Tratamiento
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