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Biomedical subjects

E Belgrano

Publications and source records attributed to E Belgrano.

At least 19 recordsLinked to original sources
PubMed1979

Value of selective parathormone radioimmunoassay in primary hyperparathyroidism.

Nine cases of primary hyperparathyroidism (PHP) in patients with urinary calculi are reported and discussed. Selective venous catheterization and parathormone (PTH) radioimmunoassay confirmed the diagnosis in all cases, preoperatively discriminated between adenoma and diffuse parathyroid hyperplasia, and permitted exact preoperative localization of 5 of 7 adenomas. The interest of the urologist in PHP and the usefulness of selective PTH radioimmunoassay are discussed and emphasized.

Adenoma↗
PubMed1979

Transcatheter arterial embolization in urological tumors: the use of isobutyl-2-cyanoacrylate.

Transcatheter arterial embolization is a useful technique to manage urological tumors. Herein we describe a new embolic material (isobutyl-2-cyanoacrylate) in 5 cases of renal cancer embolization and in 1 case of bilateral hypogastric embolization for bladder cancer hemorrhage. Isobutyl-2-cyanoacrylate provides a complete, distal and irreversible embolization, making it suitable material in cancer embolization.

Aged↗
PubMed1979

Gelatin foam and isobutyl-2-cyanoacrylate in the treatment of life-threatening bladder haemorrhage by selective transcatheter embolisation of the internal iliac arteries.

Three patients with severe haemorrhage from inoperable bladder cancer were treated by selective transcatheter embolisation of both internal iliac arteries. The technical details, results and a rare complication are described. Both gelatin foam and isobutyl-2-cyanoacrylate (IBC) are suitable embolic materials, but we prefer IBC when possible in patients with tumour.

Aged↗
PubMed1978

T lymphocytes inhibiting factors in renal cancer: evaluation of differences between arterial and renal venous blood levels of E rosette forming cells.

The cellular immune response has been reported to be impaired in patients with renal cancer and to be increased by removal of the tumor bulk. T lymphocyte levels in the vein of the neoplastic kidney were investigated in 4 patients to assess the presence of a T lymphocyte inhibiting factor produced by the tumor. T lymphocyte levels resulted in significantly decreased tumorous venous blood, whether compared to arterial, contralateral or peripheral blood. A similar result was not found in 10 control patients. Some hypotheses on the nature of this T lymphocyte inhibition are discussed.

Humans↗
PubMed1978

Cyanoacrylates in transcatheter renal embolization.

Isobutyl-2-cyanoacrylate and N-butyl-2-cyanoacrylate were used in experimental trans-catheter embolization of rat kidneys and in two patients as preoperative embolization of renal carcinoma. The agents produced an efficient and lasting embolization, with no evident complication; however, their usage is difficult and an appropriate dosage is also difficult.

Aged↗
PubMed1978

Clots, oxycel, gelfoam, barium, and cyanoacrylates in transcatheter embolization of rat kidney.

Transcatheter arterial embolization is an interesting technique; its usefulness in urology has not yet been well assessed. The properties and characteristics of some embolic materials among the more commonly used were investigated by means of a new experimental model, i.e., transcatheter embolization of rat kidney. Autologous clots and Oxycel were found to give a transient embolization, whereas Gelfoam, barium, and cyanoacrylates did not allow recanalization or revascularization. Only barium was found in venous vessels. The findings are discussed in view of the clinical application of the embolic materials considered.

Animals↗
PubMed1978

[PTH radioimmunoassay on selective venous samplings as a method of localization of parathyroid adenomas in primary hyperparathyroidism (author's transl)].

Preoperative localization of parathyroid adenomas by various methods is today in increasing clinical use. The practical value of the methods is discussed, with particular reference to the PTH radioimmunoassay on selective venous samplings, which is the most reliable. The authors report on their 38 cases with suspected primary hyperparathyroidism during the last six years.

Adenoma↗
PubMed1977

T and B lymphocyte levels in renal cancer patients: influence of preoperative transcatheter embolization and radical nephrectomy.

The mean percentage of T and B lymphocytes in peripheral blood was tested in 6 patients with renal cancer before and after preoperative transcatheter embolization and radical nephrectomy. While no significant difference was found in B lymphocyte levels compared to those in healthy control subjects a clear impairment in circulating T lymphocyte levels was observed in renal cancer patients who had not been treated. This reduction in T lymphocyte levels persisted after embolization but there was a significant increase after radical nephrectomy.

Adult↗
PubMed1977

Therapeutic embolization of renal cell carcinoma.

The technique of embolization of renal cell carcinoma is assessed on the basis of the authors' experience. The procedure is usually envisaged in case of hypervascularized extracapsular tumors, with the purpose of obtaining the preoperative occlusion of the renal artery. Nevertheless, it cannot replace surgery, which can accomplish it with much more safety. The technique of embolization itself, which should be as selective as possible, is also discussed and its clinicobiological (immunological) implications are introduced.

Adenocarcinoma↗