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P Chuan Nuez

Publications and source records attributed to P Chuan Nuez.

17 recordsLinked to original sources
PubMed2006

[Evaluation of an immunoassay kit to measure free testosterone].

INTRODUCTION AND OBJECTIVES: The best indicators to the diagnosis of hypogonadism are free and bioavailable testosterone circulating levels. Free and bioavailable testosterone measurements are complex. However, simple kits for direct measurement of free testosterone by analog immunoassay are available. We examined the utility of an enzymoimmunoassay kit for free testosterone measurement. MATERIAL AND METHOD: One hundred thirty-three healthy males were included. Total testosterone, SHBG, albumin and free testosterone was measured. We used two different methods to free testosterone estimation: direct measurement by enzymoimmunoassay and mathematical calculation with Vermeulen's formula, which uses albumin concentration, total testosterone and SHBG to calculate free testosterone (method recommended by the International Society for the Study of the Aging Male). We compared the two methods means values and a linear regression study was performed. RESULTS: Mean age was 37 +/- 11 years. Mean serum concentration for total testosterone was 21.43 +/- 6.8 nm ol/L. The mean value for free testosterone measured by direct and mathematical method was 0.0508 +/- 0.0118 nmol/L and 0.474 +/- 0.123 nmol/L respectively. In linear regression study exists a positive correlation between both methods (p< 0.05), although correlation coefficient is very low (r = 0.25). CONCLUSIONS: There are significant statistical differences between the measurements of free testosterone by direct and mathematical methods. Although certain correlation is observed, this is very low. In conclusion, free testosterone measurement by enzymoimmunoassay is not reliable.

Adult↗
PubMed1995

[Bladder leiomyoma. Review and report of a case].

OBJECTIVE: The present study reviews bladder leiomyoma, an uncommon pathology. The problems of differential diagnosis and the therapeutic options are discussed and the literature reviewed. METHODS/RESULTS: A 33-year-old female with anterolateral intramural leiomyoma of the bladder is described. Patient evaluation included US, cystography, CT, cystoscopy and ultrasound-guided suprapubic puncture. CONCLUSIONS: Leiomyoma is an uncommon benign tumor of the bladder. To our knowledge, only 235 cases have been reported in the literature. We advocate the use of ultrasound-guided suprapubic puncture, a simple procedure that is frequently diagnostic, in the evaluation of this tumor type.

Adult↗
PubMed1994

[Acquired enterovesical fistulas].

We report on 23 patients with acquired vesicoenteric fistula treated during the past 12 years: 48% of these were of inflammatory etiology (11 cases), 35% were caused by neoplasms (8 cases) and 17% were iatrogenic (4 cases). The most frequent symptoms were pneumaturia and fecaluria (78% of cases). Cystoscopy was the most useful diagnostic procedure in detecting fistula (13 of 18 cases). Other imaging techniques, though less effective for diagnosis, were useful in assessing the status of the GI tract and, at times, in determining the etiology of the fistulae. Treatment depends on the etiology, localization and patient general condition. The technique most frequently applied in our series was resection of the fistulous tract, together with the compromised intestinal segment, and bladder suture.

Adult↗
PubMed1990

[Segmental kidney dysplasia].

The frequency of segmental renal dysplasia was studied in 15 patients with complete pyeloureteral duplication whose anatomopathologic diagnosis of the lesions of some of the renal segments of duplication were available (14 partial nephrectomies, one open renal biopsy). Evidence of dysplasia was found in 10 cases (67%), the remaining 5 were diagnosed as having chronic pyelonephritis. All patients had a coexisting ureteric anomaly that drained the dysplastic renal segment: 6 ureteral ectopias, 3 ectopic ureteroceles, 1 vesicoureteral reflux. The clinical and pathogenic importance of the associated anomalies of the excretory tract, the diagnostic difficulties arising from the minimally- or non-functioning dysplastic renal segment, and the therapeutic modalities utilized are discussed.

Abnormalities, Multiple↗
PubMedDate not supplied

[The Ask-Upmark kidney: a form of reflux nephropathy].

We present six female patients aged 14 to 47, all diagnosed histopathologically as suffering from Ask-Upmark Kidney and who had clinical manifestations of severe arterial tension associated with urinary infection in four cases. Mictional Cystourethrography was carried out in all cases, and four of them displayed vesicoureteral reflux in the small kidney. Although this pathology has classically been considered a congenital malformation in the context of renal hypoplasias (segmental hypoplasia), the observation of glomerular traces with PAS staining in the renal segments regarded classically as "aglomerular" and the frequent association of this pathology with vesicoureteral reflux point significantly towards Ask-Upmark Kidney being a form of reflux nephropathy. Nephrectomy cured the arterial hypertension in half the cases, and the factors with prognostic importance in this respect are commented upon.

Adolescent↗
PubMedDate not supplied

[Effects of urologic surgery on lymphocyte blastogenic response to phytohemagglutinin].

In order to study the effect of urological surgery on the defence system, we have evaluated the postoperative evolution of the lymphocyte blastogenic response to phytohemagglutinin (PHA) in 45 patients. 25 of them were subjected to a transurethral resection (TUR) of a vesical tumour, 10 to a transvesical prostatectomy, 6 to a pyelolithotomy and 4 to a nephrectomy due to renal atrophy secondary to lithiasis. We verified a significant drop in the lymphocyte blastogenic response to PHA at 2-4 hours of transvesical prostatectomy (p less than 0.001) and of pyelolithotomy and nephrectomy (p less than 0.001) which was sustained until the fourth and second day after operation respectively, with subsequent return to normal. However, lymphocyte blastogenic response to PHA did not vary significantly during the postoperative of patients subjected to a TUR of vesical tumours. On the whole, the degree and duration of postoperative immunodepression was dependent on the intensity of the surgical traumatism.

Aged↗
PubMedDate not supplied

[Renal dysplasia and vesico-ureteral reflux].

We studied two groups of patients in order to evaluate the frequency of association between renal dysplasia and vesicoureteral reflux. The first was composed of 19 patients with dysplastic kidneys, 15 of whom were studied by means of micturition cystourethrography. The second group was made up of 86 patients with 124 kidneys with reflux. In 16 of these we were able to obtain a histopathological diagnosis of the renal lesions (12 nephrectomies, 4 biopsies). In three cases the renal dysplasia was associated with a vesicoureteral reflux, which represents an incidence of reflux in 20% of the patients with renal dysplasia, and an incidence of dysplasia in 19% of the kidneys with reflux examined histopathologically. We contrast these results with the literature, discussing the pathogenic hypotheses that enable us to explain this association as well as the clinical consequences thereof.

Adolescent↗
PubMedDate not supplied

[Treatment of advanced prostatic carcinoma with ketoconazole. Our experience in 10 cases].

We have treated 10 patients with histologically diagnosed prostate carcinoma, in states C and D, with orally administered dosage of 1200 mg./day of ketoconazol, with the following results: Four patients were excluded through displaying gastrointestinal intolerance in the first days of treatment. Three patients treated had the dosage reduced to half due to poor tolerance, but no improvement was noted. Another three patients tolerated the treatment for four months and displayed transitory remission of ostealgia, which permitted the withdrawal of analgesics. In these patients the treatment was suspended due to digestive intolerance and to the appearance of a clinical picture compatible with suprarrenal corex hypoadrenalism.

Aged↗
PubMedDate not supplied

[Effects of urologic surgery on lymphocyte subpopulations].

We studied the postoperative development of lymphocytes, T cells and lymphocyte subpopulations, in peripheral blood in 45 patients. Twenty-five of them were subjected to a TUR of a bladder tumor, 10 to a transvesical prostatectomy, 6 to a pyelolithotomy and 4 to a nephrectomy for renal atrophy secondary to lithiasis. We confirm a significant postoperative drop in the lymphocyte count and in the percentages of OKT 3+ (total T cells), OKT 4+ (helper T cells) and OKT 8+ cells (cytotoxic/suppressor T cells) 2-4 hours after the operation. Its duration varies according to the type of operation carried out. Despite the slight differences observed in the postoperative development of the lymphocyte subpopulations, at no time in the study did we report significant postoperative variations in the OKT 4+/OKT 8+ quotient.

Aged↗