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  • 1
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Dans le but de déterminer les risques de complications chez un groupe de malades ayant présenté un hyperparathyroïdisme après transplantation rénale les auteurs ont comparé une série de 14 cas où le taux de calcium avait été au moins une fois supérieure à 12 mg/100 ml et une série de 11 receveurs où le taux de calcium était normal et ce 6 et 30±8 mois après allogreffe rénale. Au bout de 6 mois le taux de calcium fut supérieur à 12 mg/100 ml chez 13 des 14 malades qui avaient subi une transplantation rénale. Des différences significatives furent constatées entre les transplantés et les sujets appartenant au groupe de contrôle aussi bien en ce qui concerne le calcium sérique (11.6 contre 9.2 mg/100 ml) et la phosphatase alcaline (228 contre 120 U/l). Au terme de 30±8 mois des différences furent également constatées pour le calcium (10.2 contre 9.4 mg/100 ml), pour le phosphore (2.8 contre 4.8 mg/100 ml) et pour la phosphatase alcaline (180 contre 88 U/l). Les taux de créatinine sérique étaient identiques dans les 2 groupes. Une corrélation significative fut constatée entre les déterminations précoces et tardives de la phosphatase alcaline chez les 25 sujets rassemblés en un seul groupe (r=0.72, p〈0.001). La douleur osseuse et/ou des signes radiologiques évidents d'atteinte osseuse d'origine hyperparathyroïdienne allaient de pair significativement chez les transplantés (8 contre 1 et 7 contre 0 respectivement). Chez ceux-ci fut constatée une fréquence supérieure mais non significative de calcifications vasculaires (5 contre 1) et de pancréatite aiguë (2 contre 0). Les opérés qui ont développé un hyperparathyroïdisme modéré ou intense (un taux supérieur à 12 mg/100 ml, au moins une fois) au cours des 6 mois qui suivirent la transplantation rénale, en particulier lorsqu'ils présentèrent une atteinte du squelette, devraient bénéficier d'une parathyroïdectomie subtotale.
    Abstract: Resumen Con el propósito de determinar si el grupo particular de pacientes con hiperparatiroidismo después de transplante renal (HTR) posee riesgo de desarrollar complicaciones, se realizó la evaluación de 14 casos definidos de HTR no tratados y que presentaban por lo menos un valor de calcio sérico ≥ 12 mg/100 ml, los cuales fueron comparados con 11 recipientes normocalcémicos de transplante renal a los 6 y 30 ±8 meses después de un aloinjerto renal exitoso. El calcio sérico apareció en ≥ 12 mg/100 ml dentro de los primeros 6 meses de efectuado el transplante en 13 de 14 pacientes con HTR. A los 6 meses se hallaron diferencias significativas entre los pacientes con HTR y los controles en el valor promedio del calcio sérico (11.6 vs. 9.2 mg/100 ml) y de la fosfatasa alcalina (228 vs. 120 U/l). A los 30±8 meses se hallaron diferencias en el calcio sérico (10.2 vs. 9.4 mg/100 ml), fosfato (2.8 vs. 4.8 mg/100 ml) y fosfatasa alcalina (180 vs. 88 U/l). Los niveles de creatinina sérica aparecieron similares en los 2 grupos. Se encontró una correlación significativa entre las determinaciones tempranas y las tardías de la fosfatasa alcalina cuando la totalidad de los 25 pacientes fue estudiada como grupo único (r= 0.72, p〈0.001). El dolor óseo y/o la evidencia radiológica de enfermedad ósea paratiroidea aparecieron en asociación significativa con el HTR (8 vs. 1 y 7 vs. 0, respectivamente). Una incidencia mayor, aunque no significativa, de calcificaciones vasculares (5 vs. 1) y de pancreatitis aguda (2 vs. 0) fue hallada en el HTR. Los pacientes con HTR severo definido como el hallazgo de por lo menos una determinación de calcio sérico ≥ 12 mg/100 ml, lo desarrollan dentro de los 6 meses siguientes al transplante renal, presentan morbilidad aumentada, especialmente con afección esquelética, y es posible que se beneficien de paratiroidectomía subtotal.
    Notes: Abstract In an attempt to find out if a particular group of patients with hyperparathyroidism after renal transplantation (HRT) are at risk of developing complications, 14 patients with overt untreated HRT who had at least 1 serum calcium determination ≥ 12 mg/100 ml were evaluated and compared retrospectively with 11 normocalcemic transplant recipients at 6 and 30± 8 months after successful renal allografting. Serum calcium was ≥ 12 mg/100 ml within 6 months of transplantation in 13 of the 14 HRT patients. At 6 months significant differences were found between HRT and controls in mean serum calcium (11.6 versus 9.2 mg/100 ml) and alkaline phosphatase (228 versus 120 U/l). At 30±8 months differences were found in serum calcium (10.2 versus 9.4 mg/100 ml), phosphate (2.8 versus 4.8 mg/100 ml), and alkaline phosphatase (180 versus 88 U/l). Serum creatinine levels were similar in the 2 groups. A significant correlation was found between early and late determinations of alkaline phosphatase when all 25 patients were studied as a single group (r=0.72, p〈0.001). Bone pain and/or radiological evidence of hyperparathyroid bone disease were significantly associated with HRT (8 versus 1 and 7 versus 0, respectively). A higher but not significant incidence of vascular calcifications (5 versus 1) and acute pancreatitis (2 versus 0) was found in HRT. Patients who develop moderate to severe HRT as defined by at least 1 serum calcium determination ≥ 12 mg/100 ml do so within 6 months of renal transplantation, have increased morbidity, particularly involving the skeleton, and might benefit from early subtotal parathyroidectomy.
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 27 (1984), S. 149-153 
    ISSN: 1432-0428
    Keywords: Pancreas transplant ; cyclosporin ; azathioprine ; HLA-identical siblings ; glucose metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Of 89 pancreas transplants performed in 77 diabetic patients (43 with and 34 without previous kidney transplants), 53 were from cadaver and 36 from related donors. To date, 64 patients (83%) are alive and 27 (35%) have functioning grafts (14 〉 1 year), including 0 out of 3 duct-ligated, 3 out of 15 open-duct, 17 out of 32 enteric-drained, and 7 out of 39 duct-injected. Of technically successful allografts, 8 out of 16 (50%) in the azathioprine- and 17 out of 47 (36%) in the cyclosporin-treated recipients are functioning (eight cyclosporin patients also take azathioprine). Seven of the nine (78%) non-kidney-transplant recipients of technically successful pancreas allografts from HLA-identical siblings have functioning grafts. Causes of graft failure include allograft rejection, fibrosis secondary to duct injection, or selective β-cell destruction independent of rejection. Of the 24 recipients who are currently insulin-independent, 14 have normal or near-normal glucose tolerance test results, while 10 have abnormal results, even though they are otherwise euglycaemic. The patient population to whom pancreas transplantation is applied is gradually changing, and non-uraemic, non-kidney-transplant patients currently comprise the majority of our cases (17 out of 24 in 1983; nine of the 17 currently have functioning grafts). We now prefer the enteric drainage technique. Except for recipients of related grafts from a previous kidney donor, in which case it is necessary only to continue the current immunosuppressive regimen, we now administer cyclosporin and prednisone for immunosuppression in recipients of HLA-identical sibling grafts, and cyclosporin, azathioprine and prednisone (triple therapy) for recipients of HLA-mismatched grafts. The most interesting features in this series of cases are the variable patterns of glucose metabolism post-transplant, the finding that processes other than graft rejection, may lead to loss of β-cell function, preliminary observations on changes in morphology of kidneys following restoration of normoglycaemia, and the evolution of an immunosuppressive regimen that appears to prevent allograft rejection in non-uraemic, non-kidney-transplant patients.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0428
    Keywords: Pancreatectomy ; experimental diabetes in dogs ; collagenase digestion ; transplantation ; spleen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Forty-eight mongrel dogs were made diabetic by total pancreatectomy. Fifteen untreated pancreatectomized animals survived for a mean of 7±1 (SEM) days. Thirty-three dogs were divided into five groups and received autotransplants to the spleen of pancreatic fragments dispersed by collagenase digestion for 0, 10, 15, 20 or 25 minutes. Animals transplanted with tissue digested for 0 minutes or for 10 minutes remained hyperglycaemic (mean survival 22±12 days and 28±9 days). Normoglycaemia occurred in all but one of 21 dogs transplanted with tissue digested for 15–25 minutes. Two weeks after transplantation tolbutamide and glucose tolerance curves in the group receiving tissue digested for 20 minutes most closely resembled those of normal animals. Glucose tolerance test K values in dogs receiving tissue digested for 15, 20 and 25 minutes were 1.20±0.19 percent, 1.60±0.25 percent and 0.78±0.08 percent, respectively. The K values of the transplanted animals were significantly different from the K value of 0.35±0.05 percent in the apancreatic control dogs (p 〈 0.001). The mean K value of the dogs transplanted with tissue digested for 20 minutes was significantly better than the value in the dogs transplanted with tissue digested for 25 minutes (p 〈 0.02), but was significantly less than the K value (3.30±0.27 percent) obtained in 22 normal control dogs (p 〈 0.005). Hyperglycaemia recurred immediately following splenectomy in 12 normoglycaemic dogs 10 weeks after transplantation and all animals died. The remaining normoglycaemic transplanted dogs survived for at least six months. Histological examination of spleens from the transplanted animals showed the presence of islet and exocrine tissue within the splenic pulp with no apparent destructive effect on surrounding splenic parenchyma.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A liver transplant was performed on a 4-year-old female in liver failure caused by hereditary tyrosinaemia, with hepatocellular carcinoma following a negative evaluation for metastases. However, serum alpha-fetoprotein levels never returned to normal after the surgery. Urinary succinylacetone (SA) was detected in her urine prior to transplantation despite strict adherence to a low-tyrosine diet. Other patients with severe liver disease awaiting liver transplantation do not excrete SA in the urine. She continued to excrete SA during the postoperative period despite normal liver functions. Oral tyrosine loading resulted in significant elevation of SA excretion. Possible explanations for this observation and clinical and therapeutic relevance are discussed.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1435-2451
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We have developed a technique for allotransplantation of the pancreas in pancreatectomized dogs. This method employs a graft of the whole pancreas and duodenum (P-D) which is placed in a heterotopic position with drainage of exocrine secretions of the grafted pancreas into the recipients jejunum via the graft duodenum. Venous return from the P-D allograft is directed into the systemic rather than the portal venous system. Panereatectomized dogs with such P-D allogrâfts have survived many months if immunosuppressive drugs are given to prevent rejection. We have also found that the P-D graft can survive in vitro without circulation and retain the ability to secrete insulin when stimulated by blood glucose perfusion after as long as 24 h of in vitro preservation. Preservation is done with a chamber which combines hypothermia to 5 °C and hyperbaria to 4 atmospheres of oxygen. Armed with this knowledge, we have made P-D allografts combined with renal allografts in five patients with insulin dependent, juvenile onset diabetes mellitus with terminal nephropathy. Two of these patients have left the hospital and have normal function of the P-D and renal allografts. Neither patients has required insulin since transplantation, 11 months and 7 months ago. P-D allotransplantation is now planned for insulin dependent, juvenile onset diabetics who have significant but not terminal nephropathy or retinopathy. If P-D allotransplantation is found to slow, cause to regress, or prevent the vascular deterioration characteristic of diabetes mellitus, then it may become the most frequent organ transplant because of the increasing incidence of diabetes mellitus.
    Type of Medium: Electronic Resource
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