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1.
Urolithiasis ; 51(1): 16, 2022 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-36512096

RESUMO

The occurrence of asymptomatic bacteriuria concomitant to urolithiasis is an issue for patients undergoing renal stone treatment. Disposing of a preoperative urine culture is essential to reduce the risk of septic events. The endpoint of the study is to report which characteristics of candidates for renal stone treatment are frequently associated with positive urine culture. 2605 patients were retrospectively enrolled from 14 centers; inclusion criteria were age > 18 and presence of a single renal stone 1-2 cm in size. The variables collected included age, gender, previous renal surgery, comorbidities, skin-to-stone distance, stone size, location, density, presence of hydronephrosis. After a descriptive analysis, the association between continuous and categorical variables and the presence of positive urine culture was assessed using a logistic regression model. Overall, 240/2605 patients (9%) had preoperative bacteriuria. Positive urine culture was more frequent in females, patients with previous renal interventions, chronic kidney disease, congenital anomalies, larger stones, increased density. Multivariate analysis demonstrated that previous renal interventions (OR 2.6; 95% CI 1.9-3.4; p < 0.001), renal-related comorbidities (OR 1.31; 95% CI 1.19-1.4; p < 0.001), higher stone size (OR 1.06; 95% CI 1.02-1.1; p = 0.01) and density (OR 1.00; 95% CI 1.0-1.00; p = 0.02) were associated with bacteriuria; male gender and lower caliceal location were inversely related to it. Beyond expected risk factors, such as female gender, other parameters are seemingly favoring the presence of positive urine culture. The awareness of variables associated with bacteriuria allows to assess which individuals are at increased risk of presenting bacteriuria and reduce the rate of septic complications.


Assuntos
Bacteriúria , Cálculos Renais , Urolitíase , Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Bacteriúria/epidemiologia , Estudos Retrospectivos , Cálculos Renais/cirurgia , Urolitíase/epidemiologia , Fatores de Risco
2.
J Pers Med ; 11(3)2021 Mar 17.
Artigo em Inglês | MEDLINE | ID: mdl-33802940

RESUMO

Unhealthy lifestyle, as sedentary, unbalanced diet, smoking, and body composition change are often observed in non-Hodgkin's lymphoma (NHL) survivors, and could be determinant for the onset of cancer treatment-induced metabolic syndrome (CTIMetS), including abdominal obesity, sarcopenia, and insulin resistance. The aim of this study was to assess whether changes in body composition, unhealthy lifestyles and types of anti-cancer treatment could increase the risk of metabolic syndrome (MetSyn) and sarcopenia in long-term NHL survivors. We enrolled 60 consecutive NHL patients in continuous remission for at least 3 years. Nutritional status was assessed by anthropometry-plicometry, and a questionnaire concerning lifestyles and eating habits was administered. More than 60% of survivors exhibited weight gain and a change in body composition, with an increased risk of MetSyn. Univariate analysis showed a significantly higher risk of metabolic disorder in patients treated with steroids, and in patients with unhealthy lifestyles. These data suggest that a nutritional intervention, associated with adequate physical activity and a healthier lifestyle, should be indicated early during the follow-up of lymphoma patients, in order to decrease the risk of MetSyn's onset and correlated diseases in the long term.

3.
Leuk Res ; 39(3): 279-83, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25636354

RESUMO

This current retrospective multicenter analysis represents, to our knowledge, the first Italian study evaluating the efficacy and toxicity profile of "lenalidomide plus dexamethasone" as salvage therapy in patients with recurrent-refractory MM in the real life contest. Our study included patients who are usually excluded from clinical trials because of unfavorable baseline characteristics. Median OS was significantly longer in patients receiving "lenalidomide plus dexamethasone" for more than 12 months compared with those who had received "lenalidomide plus dexamethasone" for a shorter interval (P<0.0001). Median OS was not affected by best response achieved (P 0.4) and age (P 0.3). Quality of response did not correlate with number of previous lines of therapy (P 0.77) and age. Higher ORRs were recorded in the patients group with relapsed MM compared to those with refractory disease, but this difference was not statistically significant (P 0.38).


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Mieloma Múltiplo/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Terapia de Salvação , Adulto , Idoso , Idoso de 80 Anos ou mais , Dexametasona/administração & dosagem , Feminino , Seguimentos , Humanos , Lenalidomida , Masculino , Pessoa de Meia-Idade , Mieloma Múltiplo/mortalidade , Mieloma Múltiplo/patologia , Recidiva Local de Neoplasia/mortalidade , Recidiva Local de Neoplasia/patologia , Estadiamento de Neoplasias , Prognóstico , Estudos Retrospectivos , Taxa de Sobrevida , Talidomida/administração & dosagem , Talidomida/análogos & derivados
4.
Transplant Proc ; 45(7): 2650-3, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24034014

RESUMO

INTRODUCTION: Renal transplantation in patients older than 60 years has long been regarded with skepticism owing to the increased risk of complications although, as compared with dialysis treatment, a graft seems to improve not only the quality of life but also long-term patient survival. This study sought to analyze the impact of recipient age older than 60 years on patient and graft outcomes. MATERIALS AND METHODS: We retrospectively investigated the outcomes of 761 kidney transplant recipients from cadaveric donors performed between February 1998 and July 2011. While 69 subjects were at least 60 years of age (group A), 692 were younger than 60 years (group B) at the time of transplantation. RESULT: Mean follow-up was 60.1 ± 38.5 months. Delayed graft function (DGF) requiring dialysis was observed in 36 group A (52.1%) and 205 group B (29.6%) subjects (P = .001). However, there were also significant differences between group A and group B in terms of mean donor age (60.3 vs 44.6 years; P < .001) and mean donor estimated creatinine clearance (57.8 vs 83.4 mL/min; P < .001). There were no significant differences in death-censored graft survival between the two groups, but elderly patients experienced worse survival (P = .0005). The most common causes of patient death were myocardial infarction, other cardiovascular complications, and tumors. CONCLUSION: Kidney transplantation is a good option for elderly recipients with end-stage renal disease, providing long graft survival and a good quality of life, although these patients are more likely to develop cancer or cardiovascular disease. Our findings suggested that older patients should not be excluded a priori from transplantation, but meticulous screening for cancer and heart disease should be always be performed to improve outcomes.


Assuntos
Fatores Etários , Transplante de Rim , Frequência do Gene , Humanos , Reação em Cadeia da Polimerase , Polimorfismo de Nucleotídeo Único
5.
Transplant Proc ; 45(3): 1237-41, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23622667

RESUMO

INTRODUCTION: Dual kidney transplantation (DKTx) to reduce the disparity between demand and supply of organs was evaluated in two Italian centers (Bari and Novara). MATERIALS AND METHODS: Between October 2000 and October 2011, we performed 97 DKT (26 ipsilateral/71 bilateral) following routine biopsy of all kidneys obtained from expanded criteria donors by Remuzzi-Karpinsky scores. The reference group was 379 single grafts from donors older than 60 years single kidney transplantation ([SKT] × > 60). RESULTS: Good postoperative renal function was observed in 56 DKTx (57.7%); whereas acute tubular necrosis requiring dialysis was observed in 41 (42.3%) patients. After a mean follow-up of 60 months, DKTx graft survivals were 96%, 93%, and 90% and patient survivals, 96%, 91%, and 91% at 1, 3, and 5 years, respectively. Complications in expanded criteria donor kidney transplantations included a high rate of cytomegalovirus (CMV) disease especially dual kidney cases. DKTx represented the only independent risk factor for CMV disease upon multivariate analysis (odds ratio [OR] 2.33, 95% confidence interval [CI] 1.28-4.2; P = .006). We did not observe any significant difference in graft or patient survival between DKTx and SKTx > 60 years. CONCLUSIONS: We observed good outcomes up to 5 years after transplantation in terms of graft and patient survival despite the use of inferior grafts. Comparing DKTx and SKT > 60, we noted that the mean Karpinski score for SKTx was significantly better than DKTx, although patient and graft survivals were similar. This trend confirms that the use of a biopsy to allocate expanded criteria donor kidneys may be too protective; therefore, the criteria to select DKTx require further refinement.


Assuntos
Transplante de Rim , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Cooperação do Paciente , Resultado do Tratamento
6.
Transplant Proc ; 44(7): 1922-5, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22974872

RESUMO

BACKGROUND: The objective of this study was to evaluate differences in outcomes of allograft nephrectomies performed by extracapsular versus intracapsular techniques. METHODS: From 1993 to 2010, we performed 89 allograft nephrectomies, including 57 by extracapsular techniques and 32 by intracapsular, chosen according to feasibility at the beginning of the surgery. Fisher exact test and logistic regression were used for statistical analysis. Survival estimates after allograft nephrectomy were calculated according to the Kaplan-Meier method. RESULTS: After a mean graft survival of 49.7 months, the indications for transplant nephrectomy were chronic rejection (39.3%), acute rejection (22.5%), infection/sepsis (19.1%), gross hematuria (6.7%), renal vein thrombosis (6.7%), renal artery thrombosis (3.4%), and graft rupture (2.3%). Mean operative time, blood loss, transfusions, and complications were similar between the extracapsular and intracapsular groups. The only difference in surgical aspects between the 2 groups was the mean hospital stay, which was longer for the extracapsular group (13.8 vs 7.6 days; P = .01), a result that was confirmed by multivariate analysis (odds ratio, 1.05; 95% confidence interval, 1.0-1.1; P = .03). CONCLUSIONS: Our experience showed no significant advantages in favor of the intracapsular technique except for a shorter length of hospital stay than after the extracapsular procedure.


Assuntos
Transplante de Rim , Nefrectomia , Procedimentos Cirúrgicos Operatórios/métodos , Sobrevivência de Enxerto , Humanos , Transplante Homólogo
8.
Oncogene ; 31(18): 2258-69, 2012 May 03.
Artigo em Inglês | MEDLINE | ID: mdl-21963844

RESUMO

Bone marrow (BM) angiogenesis has an important role in the initiation and progression of multiple myeloma (MM). We looked at novel mechanisms of vessel formation in patients with MM through a comparative proteomic analysis between BM endothelial cells (ECs) of patients with active MM (MMECs) and ECs of patients with monoclonal gammopathy of undetermined significance (MGECs) and of subjects with benign anemia (normal ECs). Four proteins were found overexpressed in MMECs: filamin A, vimentin, α-crystallin B and 14-3-3ζ/δ protein, not yet linked to overangiogenic phenotype. These proteins gave a typical distribution in the BM of MM patients and in MMECs versus MGECs, plausibly according to a different functional state. Their expression was enhanced by vascular endothelial growth factor, fibroblast growth factor 2, hepatocyte growth factor and MM plasma cell conditioned medium in step with enhancement of MMEC angiogenesis. Their silencing RNA knockdown affected critical MMEC angiogenesis-related functions, such as spreading, migration and tubular morphogenesis. A gradual stabilization of 14-3-3ζ/δ protein was observed, with transition from normal ECs to MGECs and MMECs that may be a critical step for the angiogenic switch in MMECs and maintenance of the cell overangiogenic phenotype. These proteins were substantially impacted by anti-MM drugs, such as bortezomib, lenalidomide and panobinostat. Results suggest that these four proteins could be new targets for the antiangiogenic management of MM patients.


Assuntos
Mieloma Múltiplo/irrigação sanguínea , Mieloma Múltiplo/patologia , Neovascularização Patológica/genética , Proteínas 14-3-3/genética , Idoso , Idoso de 80 Anos ou mais , Anemia/genética , Anemia/patologia , Células da Medula Óssea/patologia , Movimento Celular , Proteínas Contráteis/genética , Células Endoteliais/patologia , Feminino , Filaminas , Humanos , Masculino , Proteínas dos Microfilamentos/genética , Pessoa de Meia-Idade , Terapia de Alvo Molecular , Mieloma Múltiplo/genética , Paraproteinemias/genética , Paraproteinemias/patologia , Proteômica , Vimentina/genética , alfa-Cristalinas/genética
9.
Transplant Proc ; 42(4): 1104-7, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-20534234

RESUMO

INTRODUCTION: Dual kidney transplantation (DKT), using extended criteria donor (ECD) grafts not suitable for single kidney transplantation (SKT), has been suggested to expand the kidney donor pool. Herein, we reviewed the long-term outcomes of DKT to assess its results versus a control group of 179 ECD SKTs. The allocation policy was based on a Remuzzi score obtained from a pretransplant biopsy. MATERIALS AND METHODS: We analyzed SKT in 179 (31.8%) and DKT in 41 (7.3%) of 563 cadaveric transplants from 2000 to 2008. Patients with DKT versus SKT showed mean recipient ages of 54 versus 51 years. We performed 17 ipsilateral and 24 bilateral DKT. The mean score was 2.78 for SKT and 4.3/4.6 for DKT. RESULTS: Delayed graft function requiring dialysis occurred in 23 (56.1%) DKT and 70 (39.1%) SKT recipients. Primary nonfunction was observed in 1 (2.4%) DKT and 7 (3.9%) SKT recipients respectively. One DKT patient underwent monolateral transplantectomy. In the DKT versus SKT group, patient survivals were 92% versus 95%, 89% versus 93%, and 89 versus 91% at 12, 36, and 60 months, respectively (P = .3). Graft survivals were 100% versus 94%, 95% versus 90%, and 89% versus 78% at 12, 36, and 60 months, respectively (P < .001). We observed a lower incidence of chronic allograft nephropathy (P = .01) and a higher incidence of surgical adverse events (P = .04) in DKT. CONCLUSIONS: ECD graft survival using DKT provided better results compared with SKT, despite the use of organs from higher-risk donors. At 5 years follow-up, DKT was a safe strategy to face the organ shortage. To optimize the use of available kidneys, the criteria for DKT require further refinement and standardization. Preimplantation evaluation must maximize transplant success and protect recipients from receiving organs at increased risk of premature failure.


Assuntos
Sobrevivência de Enxerto/fisiologia , Transplante de Rim/fisiologia , Seleção de Pacientes , Doadores de Tecidos , Idoso , Índice de Massa Corporal , Função Retardada do Enxerto , Feminino , Seguimentos , Lateralidade Funcional , Rejeição de Enxerto/epidemiologia , Humanos , Transplante de Rim/métodos , Transplante de Rim/mortalidade , Transplante de Rim/patologia , Masculino , Pessoa de Meia-Idade , Taxa de Sobrevida , Fatores de Tempo
10.
J Pharm Biomed Anal ; 51(4): 907-14, 2010 Mar 11.
Artigo em Inglês | MEDLINE | ID: mdl-19939598

RESUMO

Protein analysis in biological fluids, such as urine, by means of mass spectrometry (MS) still suffers for insufficient standardization in protocols for sample collection, storage and preparation. In this work, the influence of these variables on healthy donors human urine protein profiling performed by matrix assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS) was studied. A screening of various urine sample pre-treatment procedures and different sample deposition approaches on the MALDI target was performed. The influence of urine samples storage time and temperature on spectral profiles was evaluated by means of principal component analysis (PCA). The whole optimized procedure was eventually applied to the MALDI-TOF-MS analysis of human urine samples taken from prostate cancer patients. The best results in terms of detected ions number and abundance in the MS spectra were obtained by using home-made microcolumns packed with hydrophilic-lipophilic balance (HLB) resin as sample pre-treatment method; this procedure was also less expensive and suitable for high throughput analyses. Afterwards, the spin coating approach for sample deposition on the MALDI target plate was optimized, obtaining homogenous and reproducible spots. Then, PCA indicated that low storage temperatures of acidified and centrifuged samples, together with short handling time, allowed to obtain reproducible profiles without artifacts contribution due to experimental conditions. Finally, interesting differences were found by comparing the MALDI-TOF-MS protein profiles of pooled urine samples of healthy donors and prostate cancer patients. The results showed that analytical and pre-analytical variables are crucial for the success of urine analysis, to obtain meaningful and reproducible data, even if the intra-patient variability is very difficult to avoid. It has been proven how pooled urine samples can be an interesting way to make easier the comparison between healthy and pathological samples and to individuate possible differences in the protein expression between the two sets of samples.


Assuntos
Biomarcadores Tumorais/urina , Ensaios de Triagem em Larga Escala , Proteínas de Neoplasias/urina , Neoplasias da Próstata/urina , Proteômica/métodos , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por Matriz , Artefatos , Estudos de Casos e Controles , Cromatografia por Troca Iônica , Humanos , Concentração de Íons de Hidrogênio , Masculino , Análise de Componente Principal , Estabilidade Proteica , Reprodutibilidade dos Testes , Manejo de Espécimes , Temperatura , Fatores de Tempo
11.
Adv Urol ; : 573560, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-19009029

RESUMO

Even in the era of phoshodiesterase type 5 inhibitors, penile implants are considered the definitive solution for the treatment of organic erectile disfunction. The advent of new surgical tools and new infection-resistant materials has significantly reduced the risk of intra and post-operative complications and the need for revision surgery. Various companies have also improved their mechanical systems in order to reduce the risk of failures, and their products are now so good they may last lifelong. In this article, we evaluate the intraoperative and postoperative complications recorded in our experience and in literature reports, and make some suggestions as to how to prevent or correct them.

12.
Transplant Proc ; 40(6): 1829-30, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18675063

RESUMO

Hand-assisted laparoscopic nephrectomy (HLN) in living donors is a minimally invasive surgical modality that uses classic laparoscopic techniques combined with the surgeon's hand as a support tool during renal dissection. We describe our experience with 14 donors undergoing HLN with a novel "deviceless" technique (DL-HLN). We used a midline or a paramedian incision. The first 10-mm trocar (camera) was inserted near the umbilicus and another 10-mm trocar placed under laparoscopic vision at the level of the anterior axillary line above the iliac crest. DL-HLN was performed in 14 patients (11 women and 3 men) of overall mean age of 40 years (range=33-60). Left nephrectomy was performed in all cases. Mean surgical time was 105 minutes (range=60-150). Estimated blood loss was 50 to 800 mL (mean=200 mL). Mean warm ischemia time was 3.5 minutes (range=2-11). Mean hospital stay was 4 days (range=3-6). In one case, uncontrollable hemorrhage developed due to a renal vein lesion at the level of the adrenal vein outlet, requiring conversion to open surgery. As to graft function, recipient serum creatinine on day 7 ranged from 0.9 to 2.6 mg/dL (mean=1.6). We used no device in our technique. The pneumoperitoneum was maintained by the sealing effect of the muscular fascia around the surgeon's wrist. Moreover, the kidney was removed through the hand port without an Endobag. Our modified HLN technique avoids the use of costly disposables and offers the advantages of a smaller incision.


Assuntos
Transplante de Rim/fisiologia , Laparoscopia/métodos , Nefrectomia/métodos , Coleta de Tecidos e Órgãos/métodos , Adulto , Perda Sanguínea Cirúrgica , Feminino , Mãos , Humanos , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Doadores de Tecidos
13.
Transplant Proc ; 40(6): 2062-4, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18675130

RESUMO

The opening of Gerota's fascia, soon after harvesting the kidney, is a standard kidney donor procedure in Italy to exclude a renal cell carcinoma (RCC), a frequent finding in older donors. Herein we have reported our experience with the diagnosis and management of subcapsular yellow areas suggestive of RCC on the kidney surface during back-table procedures. From 2001 to 2006, 12/445 grafts showed a single yellowish subcapsular nodule during the back-table procedure which was excised for frozen section (FS) to rule out RCC. The affected donors were 7 males and 5 females of overall mean age of 60 years (range, 25-77 years). The mean nodule diameter was 0.75 cm (range, 0.3-1.2 cm), and all lesions were located in the upper renal pole. In 5 cases, a diagnosis of RCC could not be excluded by FS, and both kidneys were discarded. The final histology confirmed RCC in only 3 cases, and adrenal heterotopia (AH) in the other 2. In the remaining 7 cases, FS showed AH in 4, 1 angiomyolipoma, and 2 areas of infarction confirmed by histology. The adrenal foci consisted of clear cells and scattered cells with eosinophilic, granular cytoplasm and small round nuclei, some with small nucleoli. Immunostains for cytokeratins, CD10, and epithelial membrane antigen were negative, confirming the adrenal origin. AH is the most common pathological yellowish lesion in the upper kidney pole found incidentally during back-table preparation. A histological differential diagnosis with RCC at FS is difficult, relying on the distinction of normal corticoadrenal spongiocytes from Fuhrman grade 1 clear cancer cells. In Italy, for any renal mass suggestive of RCC, a graft discard is mandatory, even if several reports have described cases of renal transplantation performed after back-table excision of small unifocal tumors.


Assuntos
Transplante de Rim/patologia , Neoplasias/epidemiologia , Complicações Pós-Operatórias/patologia , Adulto , Idoso , Cadáver , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/patologia , Doadores de Tecidos
14.
Int J Impot Res ; 16(6): 544-6, 2004 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-15175636

RESUMO

The objective of the study was to determine the effects of androgen depletion on erectile function in a population of male-to-female transsexuals. The erectile function of 25 consecutive male-to-female transsexuals on androgen depletion treatment and scheduled for surgical gender reassignment was prospectively evaluated using medical and sexual history, physical examination, total serum testosterone, International Index of Erectile Function (IIEF-15) questionnaire, penile colour-coded Doppler ultrasonography (CDU) after pharmacological stimulation and nocturnal penile tumescence (NPT) test. All but one had undetectable or low testosterone. Subjective erectile function, according to IIEF-15 scores, and penile CDU findings did not correlate with testosterone levels, whereas NPT test findings correlated well with testosterone levels. These findings would suggest that nocturnal erections are androgen-dependent whereas sexually induced erections are androgen-independent. It can also be assumed that testosterone is important but not essential for male erectile function and that other androgen-independent pathways can be responsible for sexually induced erections.


Assuntos
Androgênios/deficiência , Ereção Peniana/fisiologia , Transexualidade/fisiopatologia , Inibidores de 5-alfa Redutase , Androgênios/fisiologia , Ritmo Circadiano , Inibidores Enzimáticos/administração & dosagem , Finasterida/administração & dosagem , Hormônio Liberador de Gonadotropina/análogos & derivados , Humanos , Masculino , Estudos Prospectivos , Inquéritos e Questionários , Testosterona/sangue , Transexualidade/cirurgia
15.
J Infect ; 45(2): 112-4, 2002 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12217716

RESUMO

It is reported a case of life-threatening septic shock due to BCG septicemia after radical cystectomy in a patient with a previous treatment with BCG therapy. In the absence of response to standard antimicrobial therapy and a negative CT scan, a PCR-based technique detected the presence of BCG bacilli in bloodstream. Immediate antimycobacterial therapy resolved the sepsis, thus suggesting either the awareness of this infection or the prompt antimycobacterial therapy as the key for the appropriate management. Furthermore, isoniazid prophylaxis should be taken into consideration in patients with history of intravesical BCG therapy undergoing cystectomy.


Assuntos
Vacina BCG/efeitos adversos , Cistectomia , Infecções por Mycobacterium/tratamento farmacológico , Infecções por Mycobacterium/microbiologia , Mycobacterium bovis , Complicações Pós-Operatórias , Choque Séptico/tratamento farmacológico , Choque Séptico/microbiologia , Idoso , Antineoplásicos/efeitos adversos , Antituberculosos/uso terapêutico , Genes Bacterianos , Humanos , Masculino , Reação em Cadeia da Polimerase , Neoplasias da Bexiga Urinária/tratamento farmacológico
16.
Am J Pathol ; 157(5): 1727-34, 2000 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11073831

RESUMO

Alterations of integrin expression levels in cancer cells correlate with changes in invasiveness, tumor progression, and metastatic potential. The beta1C integrin, an alternatively spliced form of the human beta1 integrin, has been shown to inhibit prostate cell proliferation. Furthermore, beta1C protein levels were found to be abundant in normal prostate glandular epithelium and down-regulated in prostatic adenocarcinoma. To gain further insights into the molecular mechanisms underlying abnormal cancer cell proliferation, we have studied beta1C and beta1 integrin expression at both mRNA and protein levels by Northern and immunoblotting analysis using freshly isolated neoplastic and normal human prostate tissue specimens. Steady-state mRNA levels were evaluated in 38 specimens: 33 prostatic adenocarcinomas exhibiting different Gleason's grade and five normal tissue specimens that did not show any histological manifestation of benign prostatic hypertrophy. Our results demonstrate that beta1C mRNA is expressed in normal prostate and is significantly down-regulated in neoplastic prostate specimens. In addition, using a probe that hybridizes with all beta1 variants, mRNA levels of beta1 are found reduced in neoplastic versus normal prostate tissues. We demonstrate that beta1C mRNA down-regulation does not correlate with either tumor grade or differentiation according to Gleason's grade and TNM system evaluation, and that beta1C mRNA levels are not affected by hormonal therapy. In parallel, beta1C protein levels were analyzed. As expected, beta1C is found to be expressed in normal prostate and dramatically reduced in neoplastic prostate tissues; in contrast, using an antibody to beta1 that recognizes all beta1 variants, the levels of beta1 are comparable in normal and neoplastic prostate, thus indicating a selective down-regulation of the beta1C protein in prostate carcinoma. These results demonstrate for the first time that beta1C and beta1 mRNA expression is down-regulated in prostate carcinoma, whereas only beta1C protein levels are reduced. Our data highlight a selective pressure to reduce the expression levels of beta1C, a very efficient inhibitor of cell proliferation, in prostate malignant transformation.


Assuntos
Adenocarcinoma/genética , Adenocarcinoma/metabolismo , Integrina beta1/metabolismo , Neoplasias da Próstata/genética , Neoplasias da Próstata/metabolismo , RNA Mensageiro/metabolismo , Adenocarcinoma/tratamento farmacológico , Idoso , Progressão da Doença , Regulação Neoplásica da Expressão Gênica , Variação Genética , Hormônios/uso terapêutico , Humanos , Integrina beta1/genética , Masculino , Pessoa de Meia-Idade , Próstata/metabolismo , Neoplasias da Próstata/tratamento farmacológico , Valores de Referência , Células Tumorais Cultivadas
17.
Arch Ital Urol Androl ; 72(4): 216-20, 2000 Dec.
Artigo em Italiano | MEDLINE | ID: mdl-11221040

RESUMO

In the last 20 years, the wide use of abdominal ultrasound and CT scans to diagnose non renal disease has caused an increase in the number of kidney tumours discovered by chance. Our study aimed to compare the anatomopathological features and clinical evolution of kidney tumours discovered incidentally with those of symptomatic kidney tumours. We retrospectively analyzed 338 patients subjected to radical nephrectomy in our Institute between 1979 and 1999, subdivided into two groups: patients with symptomatic tumours vs those with incidentalomas. The following parameters were taken into account: histological type, pathological stage, Furhman's grade and tumour diameter. Finally, overall survival was compared. Of a total of 338 patients, 160 (47.4%), were symptomatic (group 1) and the other 178 (52.6%) had tumours discovered incidentally (group 2), during US in 144 patients (81%), CT in 32 cases (18%), and urography in 2 cases (1%). No significant differences were found as regards the histological type. When the patients were stratified by stage, a greater incidence of tumours in stage T1 was found in group 2 (42.1% vs 29.4%), while advanced forms were more frequent in group 1 (15.6% vs 9%). There were no differences in histological grade between the two subpopulations. The mean size of incidental tumours was 6.1 cm (range: 1.5-20), vs 7.6 cm of symptomatic tumours (range: 2-25 cm). Analysis of overall survival showed a statistically significant difference between the two groups: there were 37 deaths (23.1%) in group 1 vs 24 deaths (13.5%) in group 2 (p < 0.03). Progression of the disease occurred in 47 (29.3%) subjects in group 1 and 41 (23%) in group 2 (p: ns). This study demonstrated significantly longer survival among patients with kidney tumours discovered incidentally. This should be attributed to the lower stage and smaller size of incidentalomas in comparison with symptomatic tumours.


Assuntos
Neoplasias Renais/patologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Neoplasias Renais/epidemiologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
18.
J Clin Oncol ; 17(7): 2027-38, 1999 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-10561254

RESUMO

PURPOSE: To compare the efficacy of bicalutamide monotherapy to maximal androgen blockade (MAB) in the treatment of advanced prostatic cancer. PATIENTS AND METHODS: Previously untreated patients with histologically proven stage C or D disease (American Urological Association Staging System) were randomly allocated to receive either bicalutamide or MAB. After disease progression, patients treated with bicalutamide were assigned to castration. The primary end point for this trial was overall survival. Secondary end points included response to treatment, disease progression, treatment safety, quality-of-life (QOL), and sexual function. RESULTS: A total of 108 patients received bicalutamide and 112 received MAB. There was no difference in the percentage of patients whose prostate-specific antigen returned to normal levels. At the time of the present analysis (median follow-up time, 38 months; range, 1 to 60 months), 129 patients progressed and 89 died. There was no difference in the duration of either progression-free survival or overall survival. However, a survival trend favored bicalutamide in stage C disease but MAB in stage D disease. Overall and subgroup trends were confirmed by multivariate analysis. Serious adverse events and treatment discontinuations were more common in patients receiving MAB (P =.08 and P =.04, respectively). Fewer patients in the bicalutamide group complained of loss of libido (P =. 01) and of erectile dysfunction (P =.002). Significant trends favored bicalutamide-treated patients also with respect to their QOL, namely relative to social functioning, vitality, emotional well-being, and physical capacity. CONCLUSION: Bicalutamide monotherapy yielded comparable results relative to standard treatment with MAB, induced fewer side effects, and produced a better QOL.


Assuntos
Anilidas/uso terapêutico , Antineoplásicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Próstata/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos Hormonais/administração & dosagem , Qualidade de Produtos para o Consumidor , Progressão da Doença , Intervalo Livre de Doença , Disfunção Erétil/induzido quimicamente , Disfunção Erétil/epidemiologia , Flutamida/administração & dosagem , Gosserrelina/administração & dosagem , Humanos , Itália/epidemiologia , Masculino , Pessoa de Meia-Idade , Nitrilas , Modelos de Riscos Proporcionais , Neoplasias da Próstata/mortalidade , Qualidade de Vida , Taxa de Sobrevida , Compostos de Tosil
19.
Tumori ; 83(2): 567-75, 1997.
Artigo em Inglês | MEDLINE | ID: mdl-9226023

RESUMO

Despite recent advances in staging modalities, nearly 30-40% of patients undergoing radical prostatectomy for clinically localized prostate cancer have residual disease. In these cases, one or more of the following conditions may be present: extracapsular disease, positive margins, invasion of the seminal vesicles, lymph node metastases or the postoperative persistence of PSA values above the biological threshold. The optimal management for residual prostate cancer remains controversial and in this setting adjuvant therapy could be appropriate. In the present review we examine the conditions in which hormonal adjuvant therapy can be indicated and the results available from retrospective or non-randomized studies. From the data in the literature and in the absence of randomized prospective studies, prudent conclusions could be drawn on the efficacy of adjuvant hormonal therapy. In cases of small volume, low grade (Gleason score < 7) prostate cancer in stage C or D1, radical surgery coupled with adjuvant hormonal therapy leads to survival rates in stage C similar to those in the intraprostatic stage, and in stage D1 with minimal lymph involvement, seems to delay clinical development of metastases. Finally, the quality of life associated with adjuvant therapy and the drug regimens available for this therapy are reviewed.


Assuntos
Antineoplásicos Hormonais/uso terapêutico , Prostatectomia , Neoplasias da Próstata/tratamento farmacológico , Neoplasias da Próstata/cirurgia , Quimioterapia Adjuvante , Ensaios Clínicos como Assunto , Humanos , Metástase Linfática , Masculino , Invasividade Neoplásica , Estadiamento de Neoplasias , Antígeno Prostático Específico/sangue , Prostatectomia/métodos , Neoplasias da Próstata/imunologia , Neoplasias da Próstata/patologia , Neoplasias da Próstata/psicologia , Qualidade de Vida , Estudos Retrospectivos , Resultado do Tratamento
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