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1.
Cent European J Urol ; 75(1): 41-46, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35591971

RESUMO

Introduction: Neutrophil-to-lymphocyte ratio (NLR) has proven to be promising as a prognostic factor in many malignancies. We investigated the prognostic significance of NLR in patients undergoing radical cystectomy (RC) for bladder cancer (BC). Material and methods: We retrospectively evaluated the data of 134 consecutive patients with BC who underwent RC between 2011 and 2017 at a single center. Overall survival (OS) was assessed using the Kaplan-Meier method and compared between NLR subpopulations using the log-rank test. Univariate and multivariate Cox proportional hazard models were used to identify the variables affecting OS. Results: At a median follow-up of 2.2 years, high NLR (>2.7) correlated with worse a survival outcome (p = 0.0345 in log-rank test), higher tumor stage (p = 0.0047), and higher frequency of positive lymph nodes (p = 0.0285). The univariate model showed that a high NLR (p = 0.038528), advanced pathological tumor stage (p = 0.000763), lymph node involvement (p = 0.013384), a high grade of cancer (p = 0.015611), lymphovascular invasion (LVI) (p = 0.001530), positive margins (p = 0.000890) and ureterocutaneostomy as urinary diversion (p = 0.038854) had a negative impact on OS. Tumor extending beyond the submucosa (>pT1) (hazard ratio 2.161, confidence interval 1058-4411, p = 0.0345) and lymphatic infiltration (hazard ratio 1.599, confidence interval 1028-2482, p = 0.037) have been recognized as independent risk factors of poor prognosis in multivariate Cox regression analysis. Conclusions: In our cohort, an elevated NLR is associated with worse OS and adverse histopathological findings. Consequently, the NLR is an easily acquired biomarker, which may be useful in pretreatment patient risk stratification.

2.
Life (Basel) ; 12(3)2022 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-35330164

RESUMO

Radical prostatectomy (RP) in patients on continuous ambulatory peritoneal dialysis (CAPD) is a challenging procedure. The following key points need to be considered: the peritoneal cavity integrity, adjustment of the trocar positions to the peritoneal dialysis (PD) tube location, and the oncological and functional outcomes. We present a clinical case of a patient on CAPD, incidentally diagnosed with prostate cancer (PCa) during the pre-transplant evaluation. The patient suffered from LUTS, due to bladder outlet obstruction (BOO). A transurethral bladder neck incision (TUNI), with median lobe resection, was performed. A PCa Gleason score of six (3 + 3) was found in the histopathological specimen. The primary procedure was complicated by bladder neck sclerosis and acute urinary retention (AUR), resolved by suprapubic cystostomy. After proper staging determination, the patient was qualified for laparoscopic extraperitoneal RP. The standard trocar placement was modified to align with the route of the PD tube, and Retzius' space scarring was released to allow extraperitoneal prostatectomy. There were no signs of peritoneal wall damage or dialysis tube displacement. Peritoneal dialysis was resumed after 4 weeks. Laparoscopic extraperitoneal RP should be considered as an acceptable treatment method for selected patients with localized prostate cancer, allowing CAPD resumption. To the best of our knowledge, this is the first report of retroperitoneal laparoscopic RP being used in the PD population.

3.
Indian J Pathol Microbiol ; 65(1): 176-180, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35074990

RESUMO

According to the WHO classification, mesenchymal tumors of the kidney are divided into mesenchymal tumors occurring mainly in adults and children. Accumulating evidence suggests that renal mesenchymal tumors represent a group of histologically heterogeneous diseases. We are reporting the case of a 58-year-old man with a history of nephron-sparing surgery due to renal cell carcinoma in 2014 in his left kidney. He was urgently admitted to the hospital due to left-sided nephrotoxic and anuria. Computed tomography (CT) imaging was performed and revealed irregular tumor mass. He underwent left-sided nephrectomy. Microscopic appearance and immunoprofile allowed to diagnose the tumor as an inflammatory myofibroblastic tumor (IMT) of the kidney. According to the 2016 World Health Organization (WHO) classification of tumors of the urinary system and male genital organs, IMT is a benign mesenchymal tumor with malignant potential. Typical locations are the liver and biliary tract, lung, and gastrointestinal tract. In the urogenital system, IMT occurs mainly in the bladder. So far, 48 cases have been reported in the kidney.


Assuntos
Inflamação , Neoplasias Renais/diagnóstico por imagem , Neoplasias Renais/cirurgia , Rim/patologia , Neoplasias de Tecido Muscular/diagnóstico por imagem , Nefrectomia/métodos , Humanos , Neoplasias Renais/patologia , Masculino , Pessoa de Meia-Idade , Neoplasias de Tecido Muscular/cirurgia , Néfrons/cirurgia , Tomografia Computadorizada por Raios X
4.
Artigo em Inglês | MEDLINE | ID: mdl-34281021

RESUMO

Urinary tract pathologies are the most common congenital abnormalities. Duplex colleting system occurs at different stages of completion and is usually asymptomatic. Ureteral ectopia is an associated anomaly which may manifest as continuous incontinence. The aim of this article is to present two patients with duplex kidney and ureteral ectopia. Both patients presented symptoms of continuous urinary incontinence and became symptomatic in the adult life.


Assuntos
Nefropatias , Ureter , Incontinência Urinária , Adulto , Humanos , Rim , Ureter/diagnóstico por imagem , Incontinência Urinária/etiologia
5.
Res Rep Urol ; 13: 375-379, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34189131

RESUMO

Emphysematous pyelonephritis (EPN) and emphysematous cystitis (EC) are severe, necrotizing emphysematous urinary tract infections (EUTI) characterized by the presence of gas in the lumen and wall of the urinary tract and renal parenchyma. EUTIs are quite uncommon, but combination of bilateral EPN and EC is extremely rare. We report a case of 57-year-old diabetic female diagnosed with septic shock due to concurrent bilateral EPN and EC. Patient was successfully treated with a drainage of pelvicalyceal systems and the bladder combined with a conservative approach. This unique case presents a possible association between glomerulonephritis and EUTI.

6.
J Gynecol Obstet Hum Reprod ; 50(2): 102047, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33358945

RESUMO

Uterovesical fistulas are the rarest of all urogenital fistulas, mostly occurring as a complication of cesarean section. We present a case of a 32-year-old woman, who noticed continuous vaginal urine leakage starting immediately after a vaginal delivery. The shortening of the uterine cervix was reported at 26th week of gestation, and a cervical pessary was placed. Shortly after delivery, the patient noticed the loss of urinary continence control, and she was diagnosed with urinary incontinence and hematuria. The office diagnostic hysteroscopy revealed uterovesical fistula. The correction procedure by transabdominal approach was performed by the team of gynecological and urological surgeons. One year of follow-up, the patient reports no symptoms related to lower urinary tract dysfunction. Based on the literature search, we believe that his is the first study of a uterovesical fistula followed by the use of a cervical pessary for the prevention of preterm delivery. Our case is a clear reminder that symptoms of urinary incontinence after vaginal delivery should be carefully managed.


Assuntos
Pessários/efeitos adversos , Nascimento Prematuro/prevenção & controle , Fístula da Bexiga Urinária/etiologia , Adulto , Feminino , Hematúria/etiologia , Humanos , Fístula da Bexiga Urinária/cirurgia , Incontinência Urinária/etiologia
7.
Res Rep Urol ; 12: 593-597, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33299822

RESUMO

PURPOSE: The aim of the study was to evaluate prostate cell infiltration by CD4(+)IL-17(+) and Treg cells in BPH and PCa patients depending on P. acnes infection in the prostate gland. PATIENTS AND METHODS: Prostate fragments were collected from 54 patients with PCa and 34 patients with BPH. Rapid ID 32 was used to identify the bacteria. Cells were analyzed by flow cytometry BD FACSCanto II. Statistical analysis was performed using Statistica 7 software (TIBCO Software Inc, USA). RESULTS: P. acnes was detected in 35% of patients with PCa and 41% of individuals with BPH. The infiltration of CD4(+)IL-17(+) and Treg cells was statistically significantly higher (P = 0.001) in patients with BPH and positive for P. acnes. A statistically considerably higher (P = 0.001) infiltration of Treg cells in treated for PCa with P.acnes infection was also demonstrated. CONCLUSION: Prostatitis caused by P. acnes may contribute to the development of BPH and PCa.

8.
Arch Med Sci ; 16(4): 863-870, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32542089

RESUMO

INTRODUCTION: The aim of the study was to identify predictors of surgical complications of transurethral resection of bladder tumour (TURBT). MATERIAL AND METHODS: We prospectively recruited 983 consecutive patients undergoing TURBT within 7 months in six academic institutions. All patients were followed up from the surgery up to 30 days postoperatively with at least one telephone contact at the end of the observation. The primary study endpoint was any intra- or postoperative surgical complication. For the identification of predictors of complications, univariate and multivariate logistic regression models were used. Trial registration: ClinicalTrials.gov (NCT03029663). Registered 24 January 2017. RESULTS: Surgical complications were noticed in 228 (23.2%) patients, including 83 (8.4%) patients with more than one complication and 33 cases of Clavien-Dindo grade 3 complications (3.3%). The most common in-hospital complications were bleeding (n = 139, 14.1%) and bladder perforation (n = 46, 4.7%). In a multivariate analysis, nicotine use, high ASA score, and the presence of high-grade tumour were the most significant predictors of high-grade complications. The stage of the disease was the strongest predictor of bleeding, while the presence of muscle in the specimen and resident surgeon were the strongest predictors for bladder perforation. CONCLUSIONS: TURBT poses a significant risk of surgical complications, the majority of which are of low grade.

9.
Urol J ; 17(1): 30-35, 2020 01 26.
Artigo em Inglês | MEDLINE | ID: mdl-31087321

RESUMO

PURPOSE: The neutrophil-to-lymphocyte ratio (NLR), as an indicator of the systemic inflammatory response, predicts adverse outcomes in many malignancies. We investigated its prognostic significance in patients with non-metastatic renal cell carcinoma. MATERIALS AND METHODS: We retrospectively evaluated data of 196 consecutive non-metastatic RCC patients who underwent radical or partial nephrectomy between 2010 and 2012 at a single center. Overall survival (OS) was assessed using the Kaplan-Meier method and compared using the log-rank test. We applied univariate and multivariate Cox regression models to evaluate the prognostic value of dichotomized NLR for OS.   Results: At a median follow up of 68 months, high NLR (? 2,69) correlated with worse survival outcome (P = .006 in log-rank test) and higher tumor stage (P = .035). Univariate and multivariate analysis identified elevated NLR (P = .039), as well as age (P = .002), high Fuhrmann grade (P = .002) and high pathologic T stage (P < .001), as significantly associated with overall survival. CONCLUSION: In our cohort, an elevated neutrophil-to-lymphocyte ratio is significantly associated with worse OS on univariate and multivariate analysis. Consequently, the NLR is an easily acquired biomarker, which may be useful in pretreatment patient risk stratification.


Assuntos
Carcinoma de Células Renais/sangue , Carcinoma de Células Renais/cirurgia , Neoplasias Renais/sangue , Neoplasias Renais/cirurgia , Linfócitos , Neutrófilos , Fatores Etários , Idoso , Carcinoma de Células Renais/patologia , Feminino , Humanos , Estimativa de Kaplan-Meier , Neoplasias Renais/patologia , Contagem de Linfócitos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Nefrectomia , Período Pré-Operatório , Prognóstico , Modelos de Riscos Proporcionais , Curva ROC , Estudos Retrospectivos , Taxa de Sobrevida
10.
Wiad Lek ; 71(1 pt 1): 93-95, 2018.
Artigo em Polonês | MEDLINE | ID: mdl-29558359

RESUMO

In this article we have presented a case of 31-year-old male with thickening of the skin and tender cord of superficial veins of the penis and laboratory findings of the high titer of PM/Scl-100 antibodies in the serum. The patient was referred to the Rheumatology Department due to suspected systemic sclerosis. The HRCT scan of his lungs revealed fibrous degeneration and ground-glass opacity in the lower lobes. Capillaroscopy showed abnormalities, which were not typical for systemic sclerosis. In Doppler ultrasound examination of penis, superficial dorsal and circumflex veins thrombosis and inflammatory infiltration were observed. Taking into account the entire clinical picture, the patient was diagnosed with rare penile Mondor's disease and was under surveillance for systemic sclerosis.


Assuntos
Pênis/irrigação sanguínea , Escleroderma Sistêmico/diagnóstico , Tromboflebite/diagnóstico , Veias/diagnóstico por imagem , Adulto , Diagnóstico Diferencial , Humanos , Masculino , Angioscopia Microscópica , Pênis/diagnóstico por imagem , Escleroderma Sistêmico/diagnóstico por imagem , Tromboflebite/diagnóstico por imagem , Ultrassonografia Doppler
12.
Eur J Cancer Prev ; 24(2): 122-7, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25187206

RESUMO

A number of single nucleotide polymorphisms (SNPs) in the human genome have been associated with increased risk of prostate cancer. Recently, a single SNP in the region of chromosome 8q24 (rs188140481) has been associated with a three-fold increased risk of prostate cancer in Europe and North America. To establish whether rs188140481 is associated with the risk of prostate cancer in Poland, we genotyped 3467 men with prostate cancer and 1958 controls. The A allele of rs188140481 was detected in 44 of 3467 (1.3%) men with prostate cancer and in seven of 1958 (0.4%) controls (odds ratio=3.6; 95% confidence interval 1.6-7.9; P=0.0006). The allele was present in eight of 390 (2.1%) men with familial prostate cancer (odds ratio=5.8; 95% confidence interval 2.1-16.2; P=0.001). A positive family history of cancers at sites other than the prostate was observed in 27% of men who carried the rs188140481 risk allele and in 44% of noncarriers (P=0.04). No cancer at a site other than the prostate was more common in first-degree or second-degree relatives of carriers of the rs188140481 risk allele than relatives of noncarriers. The rs188140481 polymorphism in the 8q24 region confers a moderate increase in the risk of prostate cancer in Polish men. The SNP does not appear to be associated with susceptibility to cancers of other types.


Assuntos
Cromossomos Humanos Par 8/genética , Neoplasias da Próstata/genética , População Branca/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Frequência do Gene , Predisposição Genética para Doença , Genótipo , Heterozigoto , Humanos , Masculino , Pessoa de Meia-Idade , Linhagem , Polônia , Polimorfismo de Nucleotídeo Único
13.
Cent European J Urol ; 66(4): 418-22, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24757531

RESUMO

INTRODUCTION: Due to the risk of recurrence and progression, patients with non-muscle-invasive bladder cancer have to be under observation. The aim of this study is the evaluation of early recurrence at the first control cystoscopy, as a prognostic factor for recurrence and progression based on EORTC risk tables. MATERIAL AND METHODS: This study analyzed 243 patients with non-muscle-invasive bladder cancer, with an average observation time of 46 months. Recurrence was observed in case of 99 patients. Among these patients, we selected 79 who had the first cystoscopy 3 months after the transurethral electroresection of the bladder tumor. Subsequently, 45 patients with early recurrence at the first control cystoscopy were compared with 34 patients whose cancer recurred at later control cystoscopies. The patients were compared with respect to the number of points assigned by EORTC tables. RESULTS: Those patients who had an early recurrence had a significantly higher score in the EORTC table in the progression scale (p = 0.017) but not in the recurrence scale (p = 0.11), as compared with patients who had a late recurrence. CONCLUSIONS: Early recurrence that occurs within 3 months after TURBT indicates a higher risk of progression, as compared with a late recurrence. Patients who had an early recurrence had a significantly higher EORTC risk score for progression. Their EORTC risk score for recurrence was also higher, but the difference was not statistically significant. Every patient with an early recurrence has a worse prognosis and a higher risk of progression.

14.
Int J Cancer ; 134(5): 1139-46, 2014 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-24037955

RESUMO

Several single nucleotide polymorphisms (SNPs) have been associated with an elevated risk of prostate cancer risk. It is not established if they are useful in predicting the presence of prostate cancer at biopsy or if they can be used to define a low-risk group of men. In this study, 4,548 men underwent a prostate biopsy because of an elevated prostate specific antigen (PSA; ≥4 ng/mL) or an abnormal digital rectal examination (DRE). All men were genotyped for 11 selected SNPs. The effect of each SNP, alone and in combination, on prostate cancer prevalence was studied. Of 4,548 men: 1,834 (40.3%) were found to have cancer. A positive association with prostate cancer was seen for 5 of 11 SNPs studied (rs1800629, rs1859962, rs1447295, rs4430796, rs11228565). The cancer detection rate rose with the number of SNP risk alleles from 29% for men with no variant to 63% for men who carried seven or more risk alleles (OR = 4.2; p = 0.002). The SNP data did not improve the predictive power of clinical factors (age, PSA and DRE) for detecting prostate cancer (AUC: 0.726 vs. 0.735; p = 0.4). We were unable to define a group of men with a sufficiently low prevalence of prostate cancer that a biopsy might have been avoided. In conclusion, our data do not support the routine use of SNP polymorphisms as an adjunct test to be used on the context of prostate biopsy for Polish men with an abnormal screening test.


Assuntos
Polimorfismo de Nucleotídeo Único , Próstata/patologia , Neoplasias da Próstata/diagnóstico , Adulto , Idoso , Idoso de 80 Anos ou mais , Alelos , Área Sob a Curva , Biópsia , Exame Retal Digital , Humanos , Masculino , Pessoa de Meia-Idade , Antígeno Prostático Específico/sangue , Neoplasias da Próstata/genética , Neoplasias da Próstata/patologia
15.
Wideochir Inne Tech Maloinwazyjne ; 9(4): 501-4, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25561985

RESUMO

INTRODUCTION: Symptomatic hypermobile kidney is treated with nephropexy, a surgical procedure through which the floating kidney is fixed to the retroperitoneum. Although both open and endoscopic procedures have a high success rate, they can be associated with risk of complications, relatively long hospital stay and high cost. AIM: We describe our percutaneous technique for fixing a hypermobile kidney and evaluate the efficacy of the percutaneous nephrostomy insertion in management of symptomatic nephroptosis. MATERIAL AND METHODS: Between January 2005 and December 2011, 11 patients diagnosed with a symptomatic right nephroptosis of at least 1 year duration were treated with a single point percutaneous nephrostomy technique. All data were retrieved from patients' medical records and then retrospectively analysed. RESULTS: Nephropexy through a single point percutaneous nephrostomy technique was successfully accomplished in 11 women. The mean operative time was 20 min. The intraoperative estimated blood loss was minimal in all cases. No major or minor intraoperative complications were noted. The average postoperative hospital stay was 2 days. Women returned to their usual activities 14 days following the surgery. Nine women had complete resolution of their pain, and 2 patients continued to complain of discomfort in their lumbar area. One patient was re-operated upon with satisfactory subjective and objective outcomes achieved. One patient refused re-operation. CONCLUSIONS: Percutaneous nephropexy is simple, inexpensive and effective for treatment of symptomatic hypermobile kidney. It remains a valuable alternative to open, laparoscopic, and robotic methods for fixing a floating kidney.

16.
Gene ; 532(2): 173-6, 2013 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-24096176

RESUMO

BACKGROUND: Germline mutations of BRCA2 and NBS1 genes cause inherited recessive chromosomal instability syndromes and predispose to prostate cancer of poor prognosis. Mutations of the BLM gene cause another chromosomal instability clinical syndrome, called Bloom syndrome. Recently, a recurrent truncating mutation of BLM (Q548X) has been associated with a 6-fold increased risk of breast cancer in Russia, Belarus and Ukraine, but its role in prostate cancer etiology and survival has not been investigated yet. METHODS: To establish whether the Q548X allele of the BLM gene is present in Poland, and whether this allele predisposes to poor prognosis prostate cancer, we genotyped 3337 men with prostate cancer and 2604 controls. RESULTS: Q548X was detected in 13 of 3337 (0.4%) men with prostate cancer compared to 15 of 2604 (0.6%) controls (OR=0.7; 95% CI 0.3-1.4). A positive family history of any cancer in a first- or second-degree relative was seen only in 4 of the 13 (30%) mutation positive families, compared to 49% (1485/3001) of the non-carrier families (p=0.3). The mean follow-up was 49months. Survival was similar among carriers of Q548X and non-carriers (HR=1.1; p=0.9). The 5-year survival for men with a BLM mutation was 83%, compared to 72% for mutation-negative cases. CONCLUSIONS: BLM Q548X is a common founder mutation in Poland. We found no evidence that this mutation predisposes one to prostate cancer or affect prostate cancer survival. However, based on the observed 0.6% population frequency of the Q548X allele, we estimate that one in 100,000 children should be affected by Bloom syndrome in Poland.


Assuntos
Códon sem Sentido , Neoplasias da Próstata/genética , RecQ Helicases/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Análise Mutacional de DNA , Estudos de Associação Genética , Predisposição Genética para Doença , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias da Próstata/mortalidade , Fatores de Risco , Análise de Sobrevida , Adulto Jovem
17.
Prostate ; 73(5): 542-8, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23334858

RESUMO

BACKGROUND: The G84E mutation in the HOXB13 gene has been associated with a high lifetime risk of prostate cancer in North America (about 20-fold). The geographical and ethnic extent of this recurrent allele has not yet been determined. METHODS: We assayed for the presence of the G84E mutation in 3,515 prostate cancer patients and 2,604 controls from Poland and estimated the odds ratio for prostate cancer associated with the allele. RESULTS: The G84E mutation was detected in 3 of 2,604 (0.1%) individuals from the general population in Poland and in 20 of 3,515 (0.6%) men with prostate cancer (Odds ratio [OR] = 5.0; 95% CI: 1.5-16.7; P = 0.008). The allele was present in 4 of 416 (1.0%) men with familial prostate cancer (OR = 8.4, 95% CI: 1.9-37.7; P = 0.005). CONCLUSIONS: The G84E mutation predisposes to prostate cancer in Poland, but accounts for only a small proportion of cases. We expect that the G84E founder mutation might be present in other Slavic populations.


Assuntos
Proteínas de Homeodomínio/genética , Mutação Puntual/genética , Neoplasias da Próstata/etnologia , Neoplasias da Próstata/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Predisposição Genética para Doença/etnologia , Predisposição Genética para Doença/genética , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Linhagem , Polônia/epidemiologia , Fatores de Risco , População Branca/genética , População Branca/estatística & dados numéricos
18.
Cent European J Urol ; 66(1): 101-3, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24579004

RESUMO

We shall discuss the case of a female patient, aged 64 years, who was suffering from long-term purulent inflammation of the vaginal fornix that later involved the vaginal stump. This inflammatory process spread to the bladder trigone and resulted in vesicovaginal fistula (VVF) formation together with a bilateral hydronephrosis that required the placement of a temporary percutaneous nephrostomy. A non-cicatrized inflammatory reaction occurred at the right-sided insertion of the nephrostomy, which has yet to be successfully treated despite intensive dermatological and surgical approaches that included skin grafting. In the course of five-year treatment we observed a gradual regression of the inflammatory infiltration of both the trigone of the bladder and the vagina as well as a gradual closing of the VVF. The extremely long-lasting and uncommon local inflammatory reactions in the vagina, bladder, and dermal layers mandated the application of conservative treatment. The possibility of difficulties and defective healing of tissues that could result from surgical correction of the VVF are discouraging for both the patient and medical staff.

19.
Cent European J Urol ; 66(2): 159-62, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24579018

RESUMO

Small cell carcinomas of the urinary bladder originating from the neuroendocrine cells are extremely rare. We present a case of a 76-year-old patient with small cell carcinoma of the urinary bladder. The patient had hematuria and cystoscopy revealed a tumor located in a urinary bladder diverticulum. Partial resection of the bladder wall with diverticulectomy was performed. Microscopic examination established the diagnosis of neuroendocrine carcinoma, which was confirmed by immunohistochemistry. Three-month follow-up showed no recurrent disease. Patient refused further chemotherapy and radiotherapy.

20.
Amino Acids ; 43(4): 1663-70, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22349835

RESUMO

Kidneys possess a complex enzyme system which plays a major role in tryptophan metabolism. Taking into account a considerably high concentration of one of the tryptophan metabolites, kynurenic acid (KYNA) in this organ and previously reported antiproliferative activity against colon cancer cells in vitro, we measured its content in human normal and tumour kidney tissue. KYNA concentration was considerably higher in normal renal tissue (379.7 ± 39.7 pmol/g wet weight) than in renal cell carcinomas (115.5 ± 20.8 pmol/g wet weight). In in vitro experiments, KYNA in higher micro- and millimolar concentrations significantly inhibited proliferation, DNA synthesis and migration of renal cancer Caki-2 cells. Our results suggest that KYNA may affect cell cycle regulators and signalling pathways through overexpression of p21 Waf1/Cip1 and inhibition of phosphorylation of Rb protein and p38 MAPK. In conclusion, KYNA may be suggested as an endogenous agent, controlling the growth of tumour, or a chemopreventive agent.


Assuntos
Carcinoma de Células Renais/química , Neoplasias Renais/química , Rim/química , Ácido Cinurênico/metabolismo , Ácido Cinurênico/farmacologia , Adulto , Idoso , Biópsia , Carcinoma de Células Renais/patologia , Linhagem Celular Tumoral , Movimento Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Cromatografia Líquida de Alta Pressão , Inibidor de Quinase Dependente de Ciclina p21/genética , Inibidor de Quinase Dependente de Ciclina p21/metabolismo , Feminino , Expressão Gênica/efeitos dos fármacos , Humanos , Rim/patologia , Neoplasias Renais/patologia , Masculino , Pessoa de Meia-Idade , Proteína do Retinoblastoma/genética , Proteína do Retinoblastoma/metabolismo , Transdução de Sinais/efeitos dos fármacos , Quinases Ativadas por p21/genética , Quinases Ativadas por p21/metabolismo , Proteínas Quinases p38 Ativadas por Mitógeno/genética , Proteínas Quinases p38 Ativadas por Mitógeno/metabolismo
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