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1.
Arch Ital Urol Androl ; 95(1): 11266, 2023 03 15.
Artigo em Inglês | MEDLINE | ID: mdl-36924363

RESUMO

BACKGROUND: Risk factors like smoking, radiation, chronic infections and exposure to occupational chemicals are strongly associated with occurrence of bladder cancer. Association between increased body weight and bladder cancer has been controversial. The aim of this case-control study is to evaluate association of anthropometric characteristics on bladder cancer incidence in Greek population. METHODS: This case-control study was conducted at a tertiary hospital in Greece with cases being patients with bladder cancer diagnosed within the last 2 years and controls patients admitted to hospital for reason other than cancer and not related to common risk factors related to bladder cancer. Anthropometric characteristics like weight, height, body mass index, waist and hip circumference were measured. Analyses was done with R (Vienna, Austria). RESULTS: Comparison between groups showed that patients with bladder cancer had higher weight, BMI and waist circumference compared to controls. However, multivariate, binomial logistic regression showed that only age (OR 1.03, 95% CI: 1-1.05, p = 0.02), no use of smoke (OR 0.12, 95% CI: 0.07-0.23, p < 0.001) and occupation related to bladder cancer (OR 7.45, 95% CI: 2.53-27.93, p < 0.001) significantly predicted the incidence of bladder cancer. CONCLUSIONS: Bladder cancer incidence is strongly linked with specific risk factors such as smoking, occupation with exposure to chemicals and smoke, increasing age, radiation and chronic infections. Several studies have shown a weak association between anthropometric characteristics and bladder cancer, although most studies in European populations did not confirm these findings. Similarly in our case-control study in a Greek population, we found potential relationship between increased weight/BMI and waist circumference with bladder cancer, but the association disappeared in multivariate analysis.


Assuntos
Neoplasias não Músculo Invasivas da Bexiga , Humanos , Grécia/epidemiologia , Estudos de Casos e Controles , Infecção Persistente , Relação Cintura-Quadril , Índice de Massa Corporal , Fatores de Risco , Fumaça
2.
Arch Ital Urol Androl ; 94(4): 390-395, 2022 Dec 27.
Artigo em Inglês | MEDLINE | ID: mdl-36576468

RESUMO

OBJECTIVES: Phosphate and tensin homolog gene (PTEN) acts as a regulator of PI3-KAkt molecular pathway. ETS Related gene (ERG), an oncogene located in chromosome 21q22.2, is involved in prostate cancer (PCa) by serine 2 (TMPRSS2), a protein encoded by TMPRSS2 gene. The aim of this study is to evaluate the clinical impact of PTEN loss and ERG rearrangement in terms of oncologic results in patients diagnosed with localized PCa who underwent radical prostatectomy. MATERIALS AND METHODS: Prospective data were collected from a total of 74 patients who underwent open radical retropubic prostatectomy for localized PCa and immunohistochemical study was performed in tissue samples. The primary antibodies for anti-ERG antibody as well as anti-PTEN antibody were obtained from DAKO. ERG was considered positive if at least 20% of the evaluated cells were stained at least with medium intensity. PTEN protein loss was considered when the intensity of cytoplasmic and nuclear staining was mild or entirely negative across > 10% of tumor cells. RESULTS: Homogenous loss of PTEN was associated with higher clinical International Society of Urological Pathology (ISUP) grade (p = 0.018) while no statistical significant association was present regarding the presence of ERG rearrangement with either ISUPc or ISUPp. After a median follow up of 34 months, 24 patients developed biochemical recurrence. No statistical significant correlation of ERG status with biochemical recurrence was noted while PTEN was associated with biochemical recurrence development in a statistical significant way. Lastly the combination of PTEN loss with ERG rearrangement presence was detected more often in higher ISUPc and ISUPp as well as biochemical recurrence development, although in a non statistical significant way. CONCLUSIONS: Homogenous and heterogenous PTEN loss was associated with biochemical recurrence. No association of ERG and biochemical recurrence was noted. The combination of PTEN loss and ERG rearrangement presented a trend for higher ISUPc and ISUPp as well as biochemical recurrence but not in a statistical significant way.


Assuntos
PTEN Fosfo-Hidrolase , Neoplasias da Próstata , Masculino , Humanos , Regulador Transcricional ERG/genética , PTEN Fosfo-Hidrolase/genética , Estudos Prospectivos , Neoplasias da Próstata/genética , Neoplasias da Próstata/cirurgia , Neoplasias da Próstata/metabolismo , Prostatectomia , Biomarcadores Tumorais/genética
3.
Cureus ; 14(10): e30478, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36415445

RESUMO

Introduction The purpose of this study was to evaluate the 24-month outcomes of ureteroureterostomy combined with unilateral nephrostomy following radical cystectomy in patients with muscle-invasive bladder cancer (BC). Materials and methods This single-center study with prospectively collected data with retrospective data analysis was carried out between December 2018 and November 2021 and enrolled 36 patients, who underwent radical cystectomy combined with ureteroureterostomy and unilateral nephrostomy. Regular renal function assessment was carried out using serum creatinine and estimated glomerular filtration rate (eGFR), and postoperative complications, endoscopic, ultrasound, and other radiological study findings were evaluated. The follow-up of the patients was carried out over a period of 24 months. Results After completion of the 24-month follow-up, the renal function proved to be slightly improved (mean serum creatinine and eGFR values of 1.38±0.72 mg/dL and 55.9±21.87 mL/min) compared to the first-year results (1.41±0.54 mg/dL and 52.10±19.64 mL/min). However, this improvement is statistically not significant (p=0.44, p=0.30). The 24-month follow-up imaging findings remained stable in 97.22% of patients compared to the first-year results, with preservation of bilateral ureteric dilatation and grade 1 dilatation of the non-drained kidney. No case of acute pyelonephritis was recorded after the completion of the second year of follow-up, in comparison to the eight patients (22.22%) of the 12-month follow-up, who suffered acute pyelonephritis. After completing of the 24-month follow-up, one patient was excluded from further analysis, due to the placement of a second permanent percutaneous nephrostomy in the non-drained kidney, due to ureteroureterostomy stenosis with consecutive hydronephrosis in the contralateral kidney and acute renal failure. No case of anastomotic leak was observed. Conclusions The function of the ureteroureterostomy combined with unilateral nephrostomy is proven to be a safe method of urinary diversion (UD) at 24 months, with minimal and easily manageable complications. Only one case of stenosis of the ureteroureterostomy with consecutive acute renal failure due to hydronephrosis in the non-drained kidney was observed. The renal function remained stable.

4.
Cureus ; 14(7): e27501, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-36060347

RESUMO

Introduction Uretero-ureterostomy combined with unilateral nephrostomy is a rarely performed urinary diversion following radical cystectomy for muscle-invasive bladder cancer. The aim of this study is to assess the efficacy and safety of the procedure. Materials and methods Patients with muscle-invasive bladder cancer and poor performance status were enrolled in this retrospective, observational, single-centre study, carried out between December 2018 and November 2020. The patient's renal function was regularly assessed with serum creatinine and estimated glomerular filtration rate (eGFR). Evaluation of peri- and postoperative complications was performed based on clinical, laboratory, endoscopic, ultrasound and other radiological studies findings. The patient's status was assessed for 12 months. Results Thirty-six patients with a mean age of 77.4±8.6 years were enrolled in the study. 86.11% of patients had an American Society of Anesthesiologists Score ≥3 and 91.66% had an age-adjusted Charlson comorbidity index of ≥6. Slight deterioration of renal function, although not statistically significant, was observed. 36.11% of the patients developed permanent unilateral pelvic dilatation. Acute pyelonephritis, urosepsis, pyonephrosis and anastomotic leak were observed in 22.22%, 8.33%, 5.55% and 5.55% of patients, respectively; all were treated either conservatively and/or with minimally invasive procedures (nephrostomy, JJ-stent insertion) without any need for open surgical revision. Conclusions Ureteroureterostomy combined with unilateral nephrostomy is a safe and effective method of urinary diversion following radical cystectomy for muscle-invasive bladder cancer with easily manageable complications.

5.
Curr Oncol ; 29(9): 6077-6090, 2022 08 24.
Artigo em Inglês | MEDLINE | ID: mdl-36135047

RESUMO

Arterial thromboembolism has been associated with cancer or its treatment. Unlike venous thromboembolism, the incidence and risk factors have not been extensively studied. Here, we investigated the incidence of arterial thromboembolic events (ATEs) in an institutional series of advanced urinary tract cancer (aUTC) treated with cytotoxic chemotherapy. The ATE definition included peripheral arterial embolism/thrombosis, ischemic stroke and coronary events. A total of 354 aUTC patients were analyzed. Most patients (95.2%) received platinum-based chemotherapy. A total of 12 patients (3.4%) suffered an ATE within a median time of 3.6 months from the start of chemotherapy. The most frequent ATE was ischemic stroke (n = 7). Two ATEs were fatal. The 6-month and 24-month incidence were 2.1% (95% confidence interval [CI]: 0.9-4.1) and 3.6% (95% CI: 1.9-6.2), respectively. Perioperative chemotherapy increased the risk for ATE by 5.55-fold. Tumors other than UTC and pure non-transitional cell carcinoma histology were also independent risk factors. No association with the type of chemotherapy was found. Overall, ATEs occur in 4.6% of aUTC patients treated with chemotherapy and represent a clinically relevant manifestation. Perioperative chemotherapy significantly increases the risk for ATE. The role of prophylaxis in high-risk groups should be prospectively studied.


Assuntos
AVC Isquêmico , Neoplasias Urológicas , Tromboembolia Venosa , Humanos , Incidência , Fatores de Risco , Neoplasias Urológicas/tratamento farmacológico , Tromboembolia Venosa/epidemiologia
6.
Low Urin Tract Symptoms ; 14(1): 57-63, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34476901

RESUMO

OBJECTIVES: To determine the effectiveness and safety of intravesical hyaluronic acid (HA) in symptomatic women with trigonitis and to correlate the severity of symptoms with the endoscopic and histological findings. METHODS: Thirty-seven patients (aged 20-46 years) were enrolled. All patients had cystoscopy and biopsy of the bladder trigone followed by intravesical instillations of sodium HA once weekly for 10 weeks and then once monthly for the next 10 months. Clinical response was evaluated by Pain and Urgency/Frequency (PUF) Symptom Scale, visual analog scale (VAS) for pain and urgency and functional bladder capacity. A repeat cystoscopy and biopsy were performed at the end of the treatment. Symptoms and cystoscopy and pathological findings were compared before and after treatment. RESULTS: The average initial score for pain was reduced from 5.5 to 2.8 (P < 0.001) at 10 weeks and further to 2.4 (P < 0.001) at 12 months and the score for urgency from 6.9 to 3.8 (P < 0.001) and further to 3.3 (P < 0.001). The average PUF score initially decreased from 20.5 to 12.1 (P < 0.001) and then further to 10.1 (P = 0.21). The mean functional bladder capacity increased from 125 to 204 mL (P < 0.001). No association was found between baseline PUF score and cystoscopy findings (P = 0.87). The PUF score was not changed significantly between patients with improved cystoscopy and those with stable findings (P = 0.74). No significant changes were reported between initial and final biopsies. CONCLUSIONS: Intravesical HA appeared to be effective and well tolerated, although a clear relationship between symptoms and trigonitis was not confirmed.


Assuntos
Cistite Intersticial , Cistite , Administração Intravesical , Cistite Intersticial/tratamento farmacológico , Cistoscopia , Feminino , Humanos , Ácido Hialurônico
7.
J BUON ; 26(3): 1040-1055, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34268971

RESUMO

PURPOSE: The purpose of this systematic review and meta-analysis was to evaluate the potential associations between anthropometric characteristics and bladder cancer risk, synthesizing longitudinal cohort studies. METHODS: Literature search across MEDLINE, EMBASE, Scopus, Google Scholar and Cochrane Central was performed up to December 31, 2019 and data abstraction was performed independently by two authors. Random-effects (DerSimonian-Laird) models were used to estimate pooled relative risks (RR) and 95% confidence intervals (95%CI); subgroup analyses were performed in geographical region, mean age, publication year, length of follow-up, sample size, method of body mass index (BMI) estimation and adjustment for smoking. RESULTS: 27 studies were included (88 593 bladder cancer cases in a total cohort of 49 647 098 subjects). Increased bladder cancer risk was noted in overweight men (pooled RR=1.12, 95%CI: 1.04-1.21) but not in overweight women. Both obese men (pooled RR=1.14, 95%CI: 1.06-1.22) and women (pooled RR=1.19, 95%CI: 1.02-1.38) showed increased risk. Interestingly, height increase per 5 cm did not seem to affect risk of bladder cancer in men (pooled RR=1.03, 95%CI: 0.99- 1.06) and women (pooled RR=1.02, 95%CI: 0.97-1.06). Larger waist circumference was associated with bladder cancer risk in men (pooled RR=1.18, 95%CI: 1.09-1.26) but not women. CONCLUSION: Bladder cancer risk seems to be related with obesity overall and central obesity in men. In contrast to other cancer types, height does not seem to affect risk, but more studies are needed to extract safe conclusions.


Assuntos
Obesidade/complicações , Neoplasias da Bexiga Urinária/etiologia , Idoso , Índice de Massa Corporal , Estudos de Coortes , Feminino , Humanos , Estudos Longitudinais , Masculino , Fatores de Risco , Neoplasias da Bexiga Urinária/patologia
8.
J Endourol Case Rep ; 6(1): 26-29, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32775669

RESUMO

Background: Renal hematomas, although relatively rare, are potentially life-threatening complications after ureterolithotripsy. Case Presentation: We present four cases of renal hematomas that occurred in our department during the past decade (2008-2018). Unstable vital signs, increased inflammatory markers, fever, and flank pain were the commonest postoperative findings. Two patients were treated conservatively and had an uneventful recovery, whereas one patient underwent selective arterial embolization for bleeding control. The fourth patient was diagnosed with contralateral ureteral urothelial tumor and ultimately underwent contralateral radical nephroureterectomy. Conclusion: Application of safety measures during ureteroscopy may reduce the incidence of perirenal hematomas. Prompt diagnosis is based on a thorough clinical examination in combination with imaging to evaluate the location and extent of the hematoma.

9.
Oncologist ; 22(6): 667-679, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-28592625

RESUMO

The landscape of local and systemic therapy of renal cell carcinoma (RCC) is rapidly changing. The increase in the incidental finding of small renal tumors has increased the application of nephron-sparing procedures, while ten novel agents targeting the vascular endothelial growth factor (VEGF) or the mammalian target of rapamycin pathways, or inhibiting the interaction of the programmed death 1 receptor with its ligand, have been approved since 2006 and have dramatically improved the prognosis of metastatic RCC (mRCC). These rapid developments have resulted in continuous changes in the respective Clinical Practice Guidelines/Expert Recommendations. We conducted a systematic review of the existing guidelines in MEDLINE according to the Preferred Reporting Items for Systematic Review and Meta-Analyses statement, aiming to identify areas of agreement and discrepancy among them and to evaluate the underlying reasons for such discrepancies. Data synthesis identified selection criteria for nonsurgical approaches in renal masses; the role of modern laparoscopic techniques in the context of partial nephrectomy; selection criteria for cytoreductive nephrectomy and metastasectomy in mRCC; systemic therapy of metastatic non-clear-cell renal cancers; and optimal sequence of available agents in mRCC relapsed after anti-VEGF therapy as the major areas of uncertainty. Agreement or uncertainty was not always correlated with the availability of data from phase III randomized controlled trials. Our review suggests that the combination of systematic review and critical evaluation can define practices of wide applicability and areas for future research by identifying areas of agreement and uncertainty among existing guidelines. IMPLICATIONS FOR PRACTICE: Currently, there is uncertainity on the role of surgery in MRCC and on the choice of available guidelines in relapsed RCC. The best practice is individualization of targeted therapies. Systematic review of guidelines can help to identify unmet medical needs and areas of future research.


Assuntos
Carcinoma de Células Renais/tratamento farmacológico , Carcinoma de Células Renais/cirurgia , Recidiva Local de Neoplasia/tratamento farmacológico , Fator A de Crescimento do Endotélio Vascular/genética , Antineoplásicos/uso terapêutico , Carcinoma de Células Renais/genética , Carcinoma de Células Renais/patologia , Humanos , Terapia de Alvo Molecular , Metástase Neoplásica , Recidiva Local de Neoplasia/patologia , Recidiva Local de Neoplasia/cirurgia , Guias de Prática Clínica como Assunto , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores
10.
Int. braz. j. urol ; 42(5): 925-931, Sept.-Oct. 2016. tab
Artigo em Inglês | LILACS | ID: lil-796893

RESUMO

Abstract Introduction: Data from animal, clinical and prevention studies support the role of androgens in prostate cancer growth, proliferation and progression. Results of serum based epidemiologic studies in humans, however, have been inconclusive. The present study aims to define whether serum testosterone can be used as a predictor of a positive second biopsy in males considered for re-biopsy. Material and Methods: The study included 320 men who underwent a prostatic biopsy in our department from October 2011 until June 2012. Total testosterone, free testosterone, bioavailable testosterone and prostate pathology were evaluated in all cases. Patients undergoing a second biopsy were identified and biopsy results were statistically analyzed. Results: Forty men (12.5%) were assessed with a second biopsy. The diagnosis of the second biopsy was High Grade Intraepithelial Neoplasia in 14 patients (35%) and Prostate Cancer in 12 patients (30%). The comparison of prostatic volume, total testosterone, sex hormone binding globulin, free testosterone, bioavailable testosterone and albumin showed that patients with cancer of the prostate had significantly greater levels of free testosterone (p=0.043) and bioavailable T (p=0.049). Conclusion: In our study, higher free testosterone and bioavailable testosterone levels were associated with a cancer diagnosis at re-biopsy. Our results indicate a possible role for free and bioavailable testosterone in predicting the presence of prostate cancer in patients considered for re-biopsy.


Assuntos
Humanos , Masculino , Idoso , Neoplasias da Próstata/patologia , Neoplasias da Próstata/sangue , Testosterona/sangue , Biópsia/métodos , Antígeno Prostático Específico/sangue , Neoplasia Prostática Intraepitelial/patologia , Neoplasia Prostática Intraepitelial/sangue , Próstata/patologia , Padrões de Referência , Valores de Referência , Biomarcadores Tumorais/sangue , Valor Preditivo dos Testes , Fatores de Risco , Pessoa de Meia-Idade
11.
Int Braz J Urol ; 42(5): 925-931, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27532110

RESUMO

INTRODUCTION: Data from animal, clinical and prevention studies support the role of androgens in prostate cancer growth, proliferation and progression. Results of serum based epidemiologic studies in humans, however, have been inconclusive. The present study aims to define whether serum testosterone can be used as a predictor of a posi¬tive second biopsy in males considered for re-biopsy. MATERIAL AND METHODS: The study included 320 men who underwent a prostatic biopsy in our department from October 2011 until June 2012. Total testosterone, free testos¬terone, bioavailable testosterone and prostate pathology were evaluated in all cases. Patients undergoing a second biopsy were identified and biopsy results were statistically analyzed. RESULTS: Forty men (12.5%) were assessed with a second biopsy. The diagnosis of the second biopsy was High Grade Intraepithelial Neoplasia in 14 patients (35%) and Prostate Cancer in 12 patients (30%). The comparison of prostatic volume, total testosterone, sex hormone binding globulin, free testosterone, bioavailable testosterone and albumin showed that patients with cancer of the prostate had significantly greater levels of free testosterone (p=0.043) and bioavailable T (p=0.049). CONCLUSION: In our study, higher free testosterone and bioavailable testosterone levels were associated with a cancer diagnosis at re-biopsy. Our results indicate a possible role for free and bioavailable testosterone in predicting the presence of prostate cancer in patients considered for re-biopsy.


Assuntos
Biópsia/métodos , Antígeno Prostático Específico/sangue , Neoplasia Prostática Intraepitelial/sangue , Neoplasia Prostática Intraepitelial/patologia , Neoplasias da Próstata/sangue , Neoplasias da Próstata/patologia , Testosterona/sangue , Idoso , Biomarcadores Tumorais/sangue , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Próstata/patologia , Padrões de Referência , Valores de Referência , Fatores de Risco
12.
Asian J Androl ; 17(1): 98-105, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25219910

RESUMO

The objective of this study was to evaluate the expression of estrogen receptors (ER(α) and ER(ß)) and androgen receptors (ARs) as prognostic factors for biochemical recurrence, disease progression and survival in patients with pT3N0M0 prostate cancer (PCa) in an urban Greek population. A total of 100 consecutive patients with pT3N0M0 PCa treated with radical prostatectomy participated in the study. The mean age and follow-up were 64.2 and 6 years, respectively. The HSCORE was used for semi-quantitative analysis of the immunoreactivity of the receptors. The prognostic value of the ER(α) and ER(ß) and AR was assessed in terms of recurrence, progression, and survival. AR expression was not associated with any of the above parameters; however, both ERs correlated with the prognosis. A univariate Cox regression analysis showed that ER(α) positive staining was significantly associated with a greater hazard for all outcomes. Increased ER(ß) staining was significantly associated with a lower hazard for all outcomes in the univariate analysis. When both ER HSCORES were used for the analysis, it was found that patients with high ER(α) or low ER(ß) HSCORES compared with patients with negatively stained ER(α) and >1.7 hSCORE ER(ß) had 6.03, 10.93, and 10.53 times greater hazard for biochemical disease recurrence, progression of disease and death, respectively. Multiple Cox proportional hazard analyses showed that the age, preoperative prostate specific antigen, Gleason score and ERs were independent predictors of all outcomes. ER expression is an important prognosticator after radical prostatectomy in patients with pT3N0M0 PCa. By contrast, AR expression has limited prognostic value.


Assuntos
Progressão da Doença , Receptor alfa de Estrogênio/metabolismo , Receptor beta de Estrogênio/metabolismo , Recidiva Local de Neoplasia/epidemiologia , Neoplasias da Próstata/metabolismo , Neoplasias da Próstata/cirurgia , Receptores Androgênicos/metabolismo , Idoso , Biomarcadores Tumorais/metabolismo , Seguimentos , Grécia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prognóstico , Prostatectomia , Neoplasias da Próstata/mortalidade , Análise de Regressão , Taxa de Sobrevida , Resultado do Tratamento
13.
Arab J Urol ; 12(2): 137-41, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26019938

RESUMO

OBJECTIVE: To examine whether factors in a child's perinatal history influence renal function in adolescence, using a cross-sectional study, as during the past two decades researchers have tried to ascertain whether factors such as low birth weight might be related to a decline in kidney function in adolescence, although published data for children born with vesico-ureteric reflux (VUR) remain insufficient. PATIENTS AND METHODS: Sixty-one children (20 boys and 41 girls), born between 1985 and 1989 in Greece and diagnosed with VUR, were assessed. A detailed personal and family history was taken and basic anthropometric variables were measured. Kidney function was calculated from serum creatinine levels, and the glomerular filtration rate (GFR), fractional excretion of sodium, albumin levels in urine, creatinine clearance, cystatin C level and the dimensions of each kidney were measured. RESULTS: The results showed a positive relationship of birth weight (P = 0.01) with blood pressure in adolescence in children diagnosed with any degree of VUR. Renal function seemed to be intact whatever the cause of VUR, the volume of the kidneys in adolescence (P = 0.386 and 0.483, respectively, for the right and left kidney) and the values of GFR (P = 0.105), creatinine clearance (P = 0.213) and cystatin C (P = 0.055). CONCLUSIONS: These results showed that although there is a positive association between blood pressure in adolescence and birth weight, in children born with VUR there was no deterioration in renal function. Kidneys seem to function normally regardless of the gestational age at birth.

14.
Anticancer Res ; 26(4B): 2989-93, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16886625

RESUMO

BACKGROUND: The process of ingrowth of new blood vessels is stimulated by the action of vascular endothelial growth factor (VEGF), while it may be simultaneously related to the degree of tissue hypoxia. Hypoxia-inducible factor 1alpha (HIF-1alpha) is a protein of cellular response to hypoxia. The relationship between hypoxia and angiogenesis in patients with benign prostate hyperplasia (BPH) and prostate cancer (PCa) was examined. MATERIALS AND METHODS: One hundred and seventy (170) prostatic tissue samples were immunohistochemically evaluated. The microvessel density (MVD) was calculated by CD34 immunostaining; the angiogenetic profile was further assessed using a monoclonal antibody against VEGF. HIF-1alpha immunoreaction was recognized through nuclear staining of positive cells. RESULTS: CD34, VEGF and HIF-1alpha staining reactions were significantly higher in the PCa group than in the BPH group. In both groups, an interrelationship between the immunoexpression of CD34 and HIF-1alpha, VEGF and HIF-1alpha, as well as VEGF and CD34 was detected. CONCLUSION: MVD, VEGF cytoplasmic immunoreactivity and HIF-1alpha immunoreaction were more prominent in PCa than in BPH and were also significantly associated with high-grade carcinomas.


Assuntos
Subunidade alfa do Fator 1 Induzível por Hipóxia/biossíntese , Hiperplasia Prostática/metabolismo , Neoplasias da Próstata/irrigação sanguínea , Neoplasias da Próstata/metabolismo , Idoso , Idoso de 80 Anos ou mais , Antígenos CD34/biossíntese , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade , Neovascularização Patológica/metabolismo , Neovascularização Patológica/patologia , Hiperplasia Prostática/patologia , Neoplasias da Próstata/patologia , Fator A de Crescimento do Endotélio Vascular/biossíntese
15.
Urology ; 68(2): 436-41, 2006 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-16904480

RESUMO

OBJECTIVES: To assess the effects of finasteride on angiogenetic and hypoxia markers in benign prostatic hyperplasia. METHODS: A total of 178 patients aged 51 to 85 years (mean 68.7) with benign prostatic hyperplasia and awaiting transurethral prostate resection were prospectively randomized into a group of patients receiving finasteride (group 1; 88 patients) and a group of patients who received no medication until transurethral prostate resection (group 2; 90 patients). Tissue specimens were immunohistochemically stained with monoclonal antibodies against CD34 for microvessel density (MVD), vascular endothelial growth factor (VEGF), and hypoxia inducible factor-1alpha (HIF-1alpha). RESULTS: Blood loss during transurethral prostate resection was significantly higher in group 2 compared with group 1 (P <0.001). The distribution of CD34 immunostaining was mainly at the suburethral prostate. MVD, VEGF, and HIF-1alpha values were significantly lower statistically (P <0.001) in group 1 compared with group 2. In the finasteride group (group 1), the positive correlation of the immunoreactivity of CD34 and HIF-1alpha, VEGF and HIF-1alpha, and VEGF and CD34 was statistically significant (P <0.001). In the same group, MVD and VEGF and HIF-1alpha expression correlated statistically with the treatment duration. CONCLUSIONS: Finasteride administration in benign prostatic hyperplasia results in statistically significant suppression of MVD, VEGF, and HIF-1alpha in a time-dependent manner.


Assuntos
Inibidores Enzimáticos/farmacologia , Finasterida/farmacologia , Subunidade alfa do Fator 1 Induzível por Hipóxia/análise , Próstata/química , Hiperplasia Prostática/patologia , Fator A de Crescimento do Endotélio Vascular/análise , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/análise , Hipóxia Celular/efeitos dos fármacos , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
16.
Int J Urol ; 12(6): 563-9, 2005 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-15985079

RESUMO

AIM: The aim of the present study was to correlate bcl-2 protein expression and DNA-ploidy status with established prognostic parameters in renal cell carcinoma (RCC) and to examine their impact on disease progression and patient survival. METHODS: Both parameters were prospectively measured in 50 consecutive radical nephrectomy specimens using flow cytometry. They were correlated with the tumor grade, stage and histological type. Kaplan-Meier survival analysis for all parameters was performed. RESULTS: Bcl-2 protein expression was higher in RCC compared to normal renal tissue (P < 0.0001). Aneuploid tumors had higher bcl-2 expression compared to diploid tumors (P = 0.015). Bcl-2 expression and DNA content were not correlated with tumor histological types (P = 0.277/P = 0.419), grades (P = 0.690/P = 0.449), T categories (P = 0.637/P = 0.585) or stages (P = 0.726/P = 0.800). Median follow-up time was 46 months (range, 5-84) with a mean overall survival of 61.8 months (95% confidence interval, 53.7-69.9). Tumor stage was the only statistically important prognostic factor (P = 0.0045). CONCLUSION: Although Bcl-2 expression was correlated with tumor DNA content, the prognostic value of these two parameters following radical nephrectomy was not established.


Assuntos
Carcinoma de Células Renais/genética , Carcinoma de Células Renais/metabolismo , DNA de Neoplasias/genética , Neoplasias Renais/genética , Neoplasias Renais/metabolismo , Ploidias , Proteínas Proto-Oncogênicas c-bcl-2/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma de Células Renais/patologia , Progressão da Doença , Feminino , Humanos , Neoplasias Renais/patologia , Masculino , Pessoa de Meia-Idade , Prognóstico , Fase S , Análise de Sobrevida
17.
Int Urol Nephrol ; 34(3): 373-5, 2002.
Artigo em Inglês | MEDLINE | ID: mdl-12899231

RESUMO

We report a case of solitary neurofibroma of the spermatic cord. Such benign tumors arise from perineural and Schwann cells and may be located in various parts of the body, but are rarely observed in the spermatic cord. No clinical or laboratorial manifestations of von Recklinghausen disease (Neurofibromatosis) were identified. Distinct criteria have been established for a diagnosis of von Recklinghausen disease, so that a solitary neurofibroma may not represent this complex. Only a little number of solitary neurofibromas of the spermatic cord are reported in the literature.


Assuntos
Neoplasias dos Genitais Masculinos/patologia , Neurofibroma/patologia , Cordão Espermático/patologia , Idoso , Diagnóstico Diferencial , Neoplasias dos Genitais Masculinos/cirurgia , Humanos , Masculino , Neurofibroma/cirurgia , Orquiectomia , Cordão Espermático/cirurgia
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