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991.
Transient receptor potential vanilloid type 1 (TRPV1) expression changes from normal urothelium to transitional cell carcinoma of human bladder 总被引:4,自引:0,他引:4
Lazzeri M Vannucchi MG Spinelli M Bizzoco E Beneforti P Turini D Faussone-Pellegrini MS 《European urology》2005,48(4):691-698
OBJECTIVE: To investigate possible changes in the expression of the transient receptor potential vanilloid type 1 (TRPV1) from normal urothelium to transitional cell carcinoma (TCC) of human bladder. METHODS: Specimens from normal bladder (n=13, mean age 62 yrs), superficial TCC (n=16, mean age 62,4 yrs) and muscle invasive bladder cancer (n=12, mean age 67 yrs), were obtained by multiple cold cup and full-thickness biopsy during open surgery. All the specimens were processed for H&E staining, immunohistochemistry and Western Blot analysis. RESULTS: In controls, the urothelium showed a labelling whose intensity was higher in the superficial cells than in the basal and club-shaped ones. In the superficial TCC, the urothelium showed a reduced labelling intensity. In the muscle invasive TCC, a very light labelling was occasionally detected in scattered superficial cells and no labelling was present in the basal cells and in those that had invaded the muscle. In controls, Western Blot analysis recognized two thick, intensely stained bands, with a molecular weight of approximately 100 and 95 kDa. In all superficial TCC there were two bands similar to control ones and in the muscle invasive two very thin, lightly stained bands. No band was detected in the patients staged as pT4. CONCLUSION: These data demonstrated a progressive loss of TRPV1 expression in the urothelium as TCC stage increased and cell differentiation was lower. Future studies will establish the importance of this loss for TCC differentiation and progression. 相似文献
992.
Effectiveness of early pelvic floor rehabilitation treatment for post-prostatectomy incontinence 总被引:2,自引:0,他引:2
Filocamo MT Li Marzi V Del Popolo G Cecconi F Marzocco M Tosto A Nicita G 《European urology》2005,48(5):734-738
PURPOSE: Urinary incontinence after radical prostatectomy is a significant clinical problem. In this prospective study we investigate the effectiveness of early pelvic floor muscle training (PFMT) on a large population, that had undergone radical retropubic prostatectomy (RRP) at our department. METHODS: 300 consecutive patients who had undergone RRP for clinically confined prostate cancer were randomized in two groups after catheter removal. One group of 150 patients took part in a structured PFMT program. This began before discharge and consisted of Kegel exercises. The remaining 150 patients constituted the control group, they were not formally instructed in PFMT. Incontinence was assessed objectively using the 1 hour and 24 hour pad test, as well as with the ICS-Male questionnaire. All patients who were incontinent after 6 months underwent urodynamic evaluation. RESULTS: In the treated group, 19% (29 patients) achieved continence after 1 month, and 94.6% (146 patients) after 6 months. In the control group 8% (12 patients) achieved continence after 1 month, and 65% (97 patients) after 6 months (p<0.001). Patient age did not correlate with continence in the control group (p>0.05), although a significant correlation was revealed within the treated group (p<0.01). Overall, 93.3% of the total population achieved continence after one year. CONCLUSIONS: After RRP an early supportive rehabilitation program like PFMT significantly reduces continence recovery time. 相似文献
993.
Zacks MA Wen JJ Vyatkina G Bhatia V Garg N 《Anais da Academia Brasileira de Ciências》2005,77(4):695-715
There is growing evidence to suggest that chagasic myocardia are exposed to sustained oxidative stress-induced injuries that may contribute to disease progression. Pathogen invasion- and replication-mediated cellular injuries and immune-mediated cytotoxic reactions are the common source of reactive oxygen species (ROS) in infectious etiologies. However, our understanding of the source and role of oxidative stress in chagasic cardiomyopathy (CCM) remains incomplete. In this review, we discuss the evidence for increased oxidative stress in chagasic disease, with emphasis on mitochondrial abnormalities, electron transport chain dysfunction and its role in sustaining oxidative stress in myocardium. We discuss the literature reporting the consequences of sustained oxidative stress in CCM pathogenesis. 相似文献
994.
995.
De Tommasi A Occhiogrosso M De Tommasi C Cimmino A Sanguedolce F Vailati G 《Neurosurgical review》2005,28(2):104-114
It is well known that radiation can induce meningiomas. These tumors usually arise in patients with a history of low-dose radiation to the scalp for treatment of tinea capitis or high-dose radiation for a previous brain tumor. Radiation-associated meningiomas (RAMs) morphologically resemble their spontaneously arising counterparts. However, RAMs frequently present a more malignant phenotype and, as such, are diagnosed as atypical or aggressive meningiomas and occur predominantly in younger patients. This paper describes six cases of radiation-associated intracranial meningiomas in patients previously treated with low-dose radiation to the scalp for tinea capitis. 相似文献
996.
Risk of lung cancer among white and black relatives of individuals with early-onset lung cancer 总被引:3,自引:0,他引:3
Context Evidence exists that lung cancer aggregates in families and recent findings of a chromosomal region linked to lung cancer susceptibility support a genetic component to risk. Family studies of early-onset lung cancer patients offer a unique opportunity to evaluate lifetime risk of lung cancer in relatives. Objective To measure lung cancer aggregation and estimate lifetime risk among relatives of early-onset cases and population-based controls. Design and Setting Familial aggregation and cumulative risk estimates from interview data of incident cases and concurrently ascertained controls between 1990 and 2003 in metropolitan Detroit, Mich. Participants The study included 7576 biological mothers, fathers, and siblings of 692 early-onset cases and 773 frequency-matched controls. One third of the population was black. Main Outcome Measures Cumulative lifetime risk of lung cancer, stratified by race and smoking behavior in relatives of early-onset cases and controls. Results Smokers with a family history of early-onset lung cancer in a first-degree relative had a higher risk of developing lung cancer with increasing age than smokers without a family history. An increase in risk occurs after age 60 years in these individuals, with 17.1% (SE 2.4%) of white case relatives and 25.1% (SE 5.8%) of black case relatives diagnosed with lung cancer by age 70 years. Relatives of black cases were at statistically significant increased risk of lung cancer compared with relatives of white cases (odds ratio, 2.07, 95% confidence interval, 1.29-3.32) after adjusting for age, sex, pack-years, pneumonia, and chronic obstructive lung disease. Conclusions First-degree relatives of black individuals with early-onset lung cancer have greater risk of lung cancer than their white counterparts, and these risks are further amplified by cigarette smoking. These data provide estimates of lung cancer risk that can be used to offer counseling to family members of patients with early-onset lung cancer. 相似文献
997.
Khan SA Wolfman JA Segal L Benjamin S Nayar R Wiley EL Bryk M Morrow M 《Annals of surgical oncology》2005,12(9):689-696
Background We designed a prospective study to assess the likelihood that early lesions presenting as mammographic calcifications could be accessed for cytological diagnosis by ductal lavage (DL).Methods Consenting women with calcifications (Breast Imaging Reporting and Data System 4 or 5) underwent DL of fluid-yielding ducts (FYDs) before stereotactic core or excisional biopsy. The DL catheter was used to inject .2 to 1 mL of Isovue 300 into the duct to determine whether the FYD corresponded to the duct containing calcifications (designated overlap). Additional FYDs were injected, if possible, until overlap was identified. DL cytology was compared with histology.Results Twenty women were enrolled (mean age, 54.2 years); the mean size of the calcification-bearing area was 190 mm2. The histological findings were as follows: 1 invasive cancer, 9 ductal carcinomas-in-situ (DCIS), 5 atypical hyperplasias, and 5 usual hyperplasias or fibrocystic changes. Four women had no FYD. In 15 women who underwent DL and ductography, overlap of dye and calcifications was seen in 4 (27%): 1 fibrocystic change, 1 hyperplasia, 1 atypical hyperplasia (cytological diagnosis mildly atypical), and 1 DCIS (cytological diagnosis benign). Of the remaining 8 DCIS lesions, 4 had no nipple aspiration fluid, 1 showed extravasation, and 3 were lavaged but the duct did not overlap.Conclusions These results are consistent with data from women undergoing mastectomy for larger invasive cancer and DCIS and show that cancer-containing ducts do not yield nipple fluid in most cases.Published by Springer Science+Business Media, Inc. © 2005 The Society of Surgical Oncology, Inc. 相似文献
998.
Battaglia M Ditonno P Palazzo S Bettocchi C Selvaggio O Garofalo L Selvaggi FP 《Urologic oncology》2005,23(3):178-180
Congenital 21-alpha hydroxylase deficiency is a syndrome characterized by a cortisol synthesis deficiency and, rarely, by testicular masses. We present a case of bilateral nodular hyperplasia of the testis without adrenal hyperplasia in a patient affected by 21-alpha hydroxylase deficiency. This mass mimicked a testicular tumor and made differential diagnosis with a Leydig cell tumor extremely difficult. Multiple hard nodules (1 cm in diameter) could be palpated in both testes but were more prominent on the right. After an unsuccessful 30-day trial of an adrenocorticotropic hormone suppression regimen with dexamethasone (0.5 mg/qid), a right total orchifunicolectomy was performed. The final histological diagnosis was that of multiple, well-circumscribed nodules consisting of cord-like and microalveolar-like gonadal stroma, typical of an adrenogenital syndrome, and fibrosis. Differential diagnosis between testicular nodules in patients with congenital adrenal hyperplasia and Leydig cell tumors is a major clinical challenge. In cases of cortisol suppression resistant testicular masses, a serum adrenal hormone profile obtained from the gonadal vein and histology of the testicular nodule (with parenchyma sparing surgery) are recommended to obtain a correct diagnosis. 相似文献
999.
Piccoli A Pastori G Pierobon E Torraca S Andreucci M Sabbatini M Cianciaruso B 《Journal of nephrology》2005,18(5):585-591
BACKGROUND: A variable inhibition of erythropoiesis has been reported in uremic patients with renal anemia receiving anti-renin-angiotensin-system (RAS) drugs (angiotensin-converting-enzyme inhibitors, and angiotensin-receptor-antagonists). The time to development of renal anemia before dialysis is still unknown. METHODS: A retrospective cohort study (1 to 15 years) on records of 327 out-patients (217 males, 110 females) without anemia and with chronic renal insufficiency (creatinine clearance 16 to 75 mL/min) was conducted to estimate the time to development of renal anemia (Hb < 11.5 g/dL in females and Hb < 12.5 g/dL in men), and the time to decrease of Hb by 1 and 2 g/dL or more, irrespective of anemia development. Two treatment groups were analyzed: 142 patients with, and 185 without anti-RAS drugs. RESULTS: Median survival time to development of anemia was 81 months, 59 months to the loss of Hb > 1 g/dL, and 94 months for the loss of Hb > 2 g/dL. Anemia developed significantly earlier in patients with initial Ccr < 40 mL/min and in those with initial Hb < 14 g/dL. In the multivariate analysis (Cox model), male gender, Ccr < 40 mL/min, and Hb < 14 g/dL, in increasing order of relative risk, significantly contributed to prediction of anemia development without any influence of the treatment with anti-RAS drugs. The same results were obtained considering survival to the loss of either Hb > 1 g/dL or Hb > 2 g/dL. CONCLUSIONS: Development of renal anemia in mild to severe chronic kidney disease is not influenced by treatment with anti-RAS drugs. 相似文献
1000.
Mozes G Kinnick RR Gloviczki P Bruhnke RE Carmo M Hoskin TL Bennet KE Greenleaf JF 《Journal of vascular surgery》2005,42(5):963-971
OBJECTIVE: Currently, the risk of aneurysm sac rupture after endovascular abdominal aortic aneurysm repair (EVAR) is estimated by using a group of anatomic variables. Available techniques for pressure monitoring include either direct measurement using catheter-based techniques or indirect measurement requiring implantation of a pressure sensor during aneurysm repair. None of these methods is without limitations. Radiation pressure, such as that generated by a modulated ultrasound (US) beam, can induce surface vibration at a distance. The velocity of the resulting surface waves depends on the tensile stress of the vibrated surface. By measuring the change in wave velocity, it is possible to detect the change in tensile stress and calculate the pressure through the vibrated surface. We tested this concept in an in vitro aneurysm model. METHODS: Rubber tubes and explanted porcine abdominal aortas were used to model an aneurysm sac. The surface of the model was vibrated with an amplitude-modulated US beam. The resulting motion was detected either by reflected laser light or by Doppler US. The phase of the propagating wave was measured to assess changes in velocity with different pressures. RESULTS: Increasing hydrostatic pressure in the rubber model correlated well with the cumulative phase shift (R(2) = 0.96-0.99; P < .0001). By using a pump to generate dynamic pressure (between 110 and 200 mm Hg), the cumulative phase shift correlated well with the square of the mean pressure (R(2) = 0.92; P < .0001); however, the correlation with pulse pressure was poor (24-36 mm Hg; r = 0.38; P < .02). In the porcine in vitro aortic sac model, the cumulative phase shift detected with both laser (r = 0.94-0.99; P < .0001) and Doppler (r = 0.96-0.99; P < .0001) correlated well with the aneurysm pressure. CONCLUSIONS: Application of vibrometry for noninvasive measurement of aortic aneurysm sac tension is feasible in an in vitro setting. The concept of vibrometry may be used to detect endotension noninvasively after EVAR. Vibrometry may also be used to estimate wall stress in native aneurysms, and it may predict the risk of aneurysm rupture. CLINICAL RELEVANCE: Vibrometry may offer a technique for completely noninvasive monitoring of aneurysm sac pressure after EVAR. Vibrometry is based on the following principles: radiation pressure, such as that generated by modulated US, can induce surface vibration at a distance; by measuring the change in wave velocity of vibration, it is possible to detect changes in tensile stress and calculate the pressure through the vibrated surface. We tested this concept in an in vitro model and found that application of vibrometry for noninvasive measurement of aortic aneurysm sac tension is feasible. Vibrometry may also be used to estimate wall stress in native aneurysms. 相似文献