IgM antibodies in renal transplantation.

A prospective final crossmatch with patient serum and donor lymphocytes using the complement-dependent cytotoxicity assay to identify any performed anti-donor antibody is required for kidney transplantation. The presence of pre-existing antibody may lead to hyperacute rejection of the transplanted kidney. Certain anti-donor antibodies have previously been shown to be ineffective in promoting hyperacute rejection, such as IgM autoantibodies and non-specific IgM lymphocytotoxic antibodies.

Total lymphoid irradiation for pretransplant immunosuppression: nine year follow-up.

Total lymphoid irradiation (16 to 30 Gray units) was given to 12 patients (8 who had rejected previous grafts). We found a fall in T and B cell counts with a reversal of CD4/CD8, and a decrease in mitogeneic and allogeneic responses with recovery to pretransplant levels in 24 to 36 months. The total lymphoid irradiation patients (on low dose prednisone and cyclosporine) had nine year graft and patient survival rates of 50% and 81.

Glucagon lowers canine biliary cholesterol output at physiologic doses.

Pharmacologic doses of glucagon affect canine bile secretion by increasing bile flow while simultaneously decreasing biliary cholesterol output. The present study was performed to determine if physiologic doses of glucagon reduce biliary cholesterol output. Awake dogs received both intravenous 1% sodium taurocholate (50 ml/hr) to stabilize bile flow and somatostatin (12 micrograms/kg/hr) to suppress endogenous pancreatic hormone release.

Effects of bombesin on fasting bile formation.

Adult dogs were previously prepared by cholecystectomy, ligation of the lesser pancreatic duct, and insertion of cannulae into the duodenum and stomach. After a 2-week period of postoperative recovery and an overnight fast, bile ducts were cannulated, gastric cannulae placed to open drainage and sodium taurocholate 500 mg hr-1 was administered to replace bile acids lost from the interrupted enterohepatic circuit. Bombesin was infused IV for 1 hour over the dose range, 0.

Effects of serotonin on canine bile formation.

Long-term studies were performed on dogs previously prepared by cholecystectomy, ligation of the lesser pancreatic duct, and insertion of a duodenal cannula. After an overnight fast, bile duct cannulation and stabilization of bile flow with intravenous (IV) sodium taurocholate, serotonin, 10 micrograms/kg/min, or 0.15 N NaCl was infused.

Is somatostatin a directly acting cholestatic hormone?

Previous experiments have demonstrated the cholestatic effects of somatostatin administration in several animal species. These effects were confirmed in the rat. Nine pairs of intact awake rats received intravenous sodium taurocholate (23 mg hr-1) to stabilize bile flow, and half were later given somatostatin at doses of 185 micrograms hr-1.

Apoprotein C effect on triglyceride transport in tandem-perfused rat hind end and liver.

The metabolism of double-labeled triglyceride in a synthetic emulsion was defined in an in vitro perfusion system of rat hind end and liver described previously [Am. J. Physiol.

Hepatic uptake of chylomicrons and triglyceride emulsions in rats fed diets of differing fat content.

The hepatic removal of plasma chylomicrons was determined for rats fed the following diets: a) containing no triglyceride, b) regular chow diet with 4.5% of its mass as lipid and, c) a corn oil-supplemented chow with triglyceride accounting for 20% of the mass. The fractional hepatic uptake of either radiolabeled chylomicrons or a triglyceride emulsion was reciprocally related to the amount of lipid in the diet.

Hepatic resection for metastatic cancer.

One-year survival is infrequent in patients with metastatic cancer to the liver. This report includes 21 patients who underwent hepatic resection between 1974 and 1981. Operative procedures included one trisegmentectomy, 12 right hepatic lobectomies, two left hepatic lobectomies, two left lateral segmentectomies, and four wedge resections.

Effects of dibutyryl cyclic AMP and theophylline on biliary cholesterol secretion.

Glucagon increases hepatocellular cAMP and decreases biliary cholesterol output. In these experiments, we examined the relation between cAMP and biliary cholesterol secretion. Bile flow and composition were measured in conscious dogs previously prepared by cholecystectomy, ligation of the lesser pancreatic duct, and placement of duodenal and gastric cannulae.

Somatostatin-induced cholestasis can be independent of portal blood flow.

Short-term experiments were performed on adult mongrel dogs (15 to 25 kg) anesthetized with sodium pentobarbital. The operative procedure included cholecystectomy, side-to-side mesocaval shunt with ligation of the portal vein, and cannulation of the common bile duct. Intravenous sodium taurocholate (500 mg/hr) was administered to prevent depletion of bile salts.

The direct effect of insulin on canalicular bile flow.

Previous experimental studies in dogs have demonstrated the choleretic effects of insulin administered in physiologic doses. In our experiment the isolated perfused rat liver was used as an in situ model for demonstrating the direct effects of insulin on bile salt independent canalicular bile flow. Livers were initially perfused with oxygenated Krebs-Ringer buffer solution of 20% hematocrit after which sodium taurocholate (18.

Somatostatin suppression of canine fasting bile secretion.

Somatostatin, a peptide present in hypothalamus, gastric mucosa, and pancreas, suppresses several gastrointestinal functions. We evaluated the effect of graded doses of intravenous somatostatin on taurocholate-stimulated bile flow awake fasting dogs. Somatostatin doses of 1.

Production and characterization of a cytotoxic monoclonal antibody reacting with rat islet cells.

We have produced a murine monoclonal antibody (F43 A1D2) that binds to the cell surface of both rat islet tumor cells (RINm clone 5F and RINm clone 14B) and normal rat islet cells. This antibody is cytotoxic in the presence of complement for RIN tumor cells as well as A, B, and D pancreatic polypeptide rat islet cells. Antibody A1D2 does not bind to rat thymus cells, pancreatic acinar cells, or fibroblasts.

Marginal ulcer. A difficult surgical problem.

One hundred sixty-six patients with documented recurrent or marginal ulcers following previous ulcer operations were seen at Duke Medical Center and the Durham VA Hospital from 1950 through 1980. Patients with the diagnosis of gastrinoma were excluded from the series. Evaluation of initial operation for recurrent ulcer showed that the highest recurrence rate occurred following non-acid-reducing operations.