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Biomedical subjects

A Gelet

Publications and source records attributed to A Gelet.

At least 91 records · Page 5Linked to original sources
PubMed1989

Islet cell autoimmunity in type I diabetic patients after HLA-mismatched pancreas transplantation.

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)

Adult↗
PubMed1989

[Antibiotic prophylaxis with cefotiam in percutaneous nephrolithotomy].

The percutaneous extraction of renal calculi in patients whose urines are sterile is considered to be a "clean-contaminated" surgery. The post-operatory infection is thought to be the result of the urethral catheter and the nephrostomy tube. The bacteria that are more after implicated are the Gram-negative bacteria. Therefore we found useful to give as a prophylactic treatment cefotiam, which is a 3rd generation cephalosporin, and have the advantage or reaching elevated urinary concentration as well as having a broad-spectrum activity on both Gram-negative bacteria and Staphylococcus. It has been used as follow: 1) with the anesthetic induction give 2 g IV push; 2) these give 1 g IV 12 hourly four times. It has been noted, that in all patients receiving this regimen, no post-operatory infection or urinary tract infection was found during the 48 hours following surgery. Therefore we think that due to the reasonable cost of the regimen, we advise it for this type of surgery.

Adult↗
PubMed1988

[Vesico-ureteral-renal reflux in the adult. Preliminary results of endoscopic treatment].

Vesico-ureteric reflux in adult patient may now be treated endoscopically by injecting teflon under the ureteral orifices. Twenty-six ureteral units were treated by this technique in 18 patients. Correction of the reflux was obtained in 22 units (85 p. 100); the technique was ineffective in 4 units (15 p. 100). No complication was observed in this series; in particular, there was no stenosis of the intramural ureter. These encouraging preliminary results have to be confirmed on a long-term basis in large series of patients.

Endoscopy↗
PubMed1988

Post-transplant renal artery stenosis: a cause of anuria. Report of 2 cases corrected by revascularization.

We report 2 cases of severe hypertension and acute onset of anuria after renal transplantation in which angiography revealed renal artery stenosis. After renal artery reconstructive surgery renal function returned to normal and the hypertension improved. A high index of suspicion is needed to make the diagnosis. Only by heightened awareness of this important entity will patients with post-transplantation anuria secondary to renal artery stenosis be identified. Such patients may benefit from renal artery revascularization to reverse this type of renal failure.

Adult↗
PubMed1988

Treatment of upper ureteral stones.

From September 1984 to March 1986, 70 patients with upper ureteral stones were treated in our institution. 43 patients underwent endoscopic procedures including retrograde ureterorenoscopy, antegrade ureterorenoscopy and percutaneous surgery. A second group of 27 patients was treated by extracorporeal shock wave lithotripsy (ESWL). The overall success rate was 74.5 and 85% for the endoscopic and the ESWL groups, respectively. Obstruction and dilatation of the renal collecting system seemed to play a major role in the failure of either endoscopic or ESWL treatment.

Adult↗
PubMed1988

[Treatment of lithiasis in horse-shoe kidney].

Between september 1985 and april 1987 the authors treated 16 patients with 27 calculi in horse-shoe kidneys. 14 patients were treated by extra-corporeal lithotrity with two failures from the outset because of impossibility of positioning the lithiasis at the second site of the ellipsoid. In the other twelve cases and 3 months after treatment there were four complete successes (no residual calculi) and eight partial successes with, in seven cases, residual calculi less than 4 mm in diameter and, in one case, a residual calculus of more than 10 mm. Of 4 percutaneous nephrolithotomies, including two from the outset, there were no post-operative complications and, only in one case, residual fragments in the inferior calyx. The authors then analyzed the special features and difficulties inherent to the unusual topography of the renal cavities of horse-shoe kidneys. Such topography leads to modifications which are described by the authors both in the technique of extra-corporeal lithotrity as well as in that of percutaneous nephrolithotomy. The study ends with an analysis of the respective indications of the two methods of extra-corporeal or endo-urological treatment of lithiasis affecting horse-shoe kidneys.

Adult↗
PubMed1987

[Ureteral stenoses after renal transplantation].

Out of 953 kidney transplantations performed in Lyon up to the end of 1984, we observed 28 (2.9%) post-operative ureteral stenoses. Most of them were diagnosed during the first year post-transplantation. Surgical reparation of the stenosis involved either ureterovesical reimplantation or pyeloureteral anastomosis with the patients' own ureter. Return to normal renal function was observed in 64.2% of our patients while in 10.7% renal function was stabilized. Actuarial postoperative graft survival was 66% at one year and 58% at two years of follow-up.

Adolescent↗
PubMed1987

[Renal failure caused by renal artery stenosis: effects of revascularization].

From 1972 to 1986, 22 patients underwent surgical treatment for severe renovascular hypertension and rapidly progressive renal failure caused by atherosclerotic disease of the renal artery or dysplasia (group A), or by post-transplant renal artery stenosis (group B). 1. Group A (n = 16): These patients were assessed preoperatively with the measurement of serum creatinine and blood-urea levels (means 271 +/- 204 mumol/l and 15.6 +/- 10.3 mmol/l respectively) and renal clearances. 5 patients underwent aorto-renal bypass (bilateral in one case) and 11 patients were treated by autotransplantation of the kidney. Operative mortality was 6.2%. Improvement in renal function was statistically significant at 1 and 6 months postoperatively (p less than 0.05). After a mean follow-up of 31 +/- 12 months, renal function was normal in 8 patients, improved in 4, unchanged in 1 and worse in 2. At short and long-term, 81% of the patients were normotensive without medication of with an improved blood pressure (p less than 0.001). 2. Group B (n = 6): Transplant revascularisation was performed on average 10 +/- 8 months after renal transplantation. 5 patients had renal function impairment (mean serum creatinine 241 +/- 96 mumol/l, mean blood-urea 16 +/- 17 mumol/l) and 1 patient a posttransplant anuria. Resection of anastomotic (n = 2) or post-anastomotic (n = 4) lesions was carried out in all case with a new anastomosis (n = 2) or a "crossed" anastomosis (n = 4). On the 24th hour one patient underwent a second revascularization because of immediate postoperative anuria secondary to another anastomotic stenosis.(ABSTRACT TRUNCATED AT 250 WORDS)

Acute Kidney Injury↗
PubMed1987

[Endoscopic treatment of vesico-ureteral reflux].

Submucosal injection of Teflon for treatment of vesicoureteral reflux (the sting of O'Donnell) was used in 43 patients (66 ureters-21 bilateral cases). 14 patients were on dialysis and reflux was diagnosed at medical evaluation during pretransplantation work-up; correction of reflux was indicated as a preparation for renal transplantation. In another group of 24 patients with normal renal function reflux appeared as a simple congenital abnormality. 5 patients had reflux secondary to TUR or ureteral reimplantation. The procedure was performed under general or epidural anesthesia. Ultrasound examination of kidneys was performed 24 hours after the procedure, cystography and UIV was performed after 30, 100 days and one year. No ureteral obstruction were observed. In the first group of patients (on dialysis) correction of reflux was effective in 40% of cases. In the second group (congenital vesicoureteral reflux) correction was observed in 85% of cases (30/35 controlled cases). In the third group correction of reflux was observed in 83% of cases (5/6). Results in the first group of patients may be due to technical difficulties while injecting of Teflon in small, thickened sclerotic bladders. Though longterm results are still to be evaluated. The sting may be beneficial in patients on dialysis waiting for a renal transplant as it obviates the need for bilateral nephrectomy. In simple congenital reflux short and middle term results are excellent.

Adult↗