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1.
J Hum Nutr Diet ; 25(3): 201-8, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22257023

RESUMEN

BACKGROUND: The role of nutritional counselling (NC) with or without oral nutritional supplements (ONS) in patients receiving chemoradiotherapy (CRT) for head and neck cancer (HNC) still remains to be clearly defined, particularly with regard to CRT-related toxicity. METHODS: Patients undergoing CRT for HNC received NC by the dietitian within the first 4 days of radiotherapy and weekly for the course of radiotherapy (approximately 6 weeks). A weekly supply of oral nutrition supplements [1560 kJ (373 kcal) per 100 g] for up to 3 months was provided to all patients. RESULTS: Twenty-one patients completed CRT. Mucositis G3 developed in seven (33.3%) patients, whereas mucositis G4 was absent. Dysphagia was present before the start of treatment in four patients. In the remaining 17 patients, dysphagia G3 developed during/at the end of treatment in five cases. The percentage of patients interrupting anti-neoplastic treatment for was 28% for ≥6 days, 28% for 3-5 days and 44% for 0-2 days. Mucositis G3 frequency was lower in patients with a baseline body mass index (BMI, kg m(-2) ) ≥25 (two out of 12; 16.6%) than in patients with BMI <25 (five out of nine; 55.5%) (P = 0.161) and in patients with a baseline mid arm circumference >30 cm than in those with a mid arm circumference in the range 28.1-30 cm and <28 cm, and higher in patients with a greater weight loss and a greater reduction of serum albumin and mid arm circumference. CONCLUSIONS: Nutritional counselling and ONS are associated with relatively low CRT-related toxicity and with mild deterioration of nutritional parameters.


Asunto(s)
Quimioradioterapia/efectos adversos , Consejo , Dietética/métodos , Nutrición Enteral , Neoplasias de Cabeza y Cuello/terapia , Desnutrición/terapia , Terapia Combinada , Suplementos Dietéticos , Femenino , Neoplasias de Cabeza y Cuello/complicaciones , Humanos , Masculino , Desnutrición/etiología , Persona de Mediana Edad , Estudios Prospectivos , Resultado del Tratamiento
2.
Luminescence ; 26(5): 331-5, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-20812198

RESUMEN

Cigarette smoking plays an important role as a cause of morbidity and mortality in humans, involving respiratory, cardiovascular, digestive and reproductive systems. Tobacco smoke contains a large number of molecules, some of which are proven carcinogens. Although not fully understood, polymorphonuclear leukocytes seem to play a crucial role in the mechanisms by which tobacco smoke compounds are implicated in smoke-related diseases. In this paper the effects of an aqueous cigarette smoke extract on the expression of adhesion molecules of polymorphonuclear leukocytes together with the changes in the cell morphology have been related to the chemiluminescence activity. The results obtained show that polymorphonuclear leukocytes treated with aqueous cigarette smoke extract are significantly impaired, as suggested by the changes of chemiluminescence activity, of membrane receptors (CD18, CD62), myeloperoxidase expression and of cell morphology. Altogether the present data indicate that treated polymorphonuclear leukocytes are ineffectively activated and therefore unable to phagocytize zymosan particles.


Asunto(s)
Neutrófilos/citología , Neutrófilos/efectos de los fármacos , Nicotiana/efectos adversos , Humo/efectos adversos , Fumar/efectos adversos , Moléculas de Adhesión Celular/genética , Moléculas de Adhesión Celular/inmunología , Células Cultivadas , Expresión Génica/efectos de los fármacos , Humanos , Mediciones Luminiscentes , Neutrófilos/química , Neutrófilos/inmunología , Humo/análisis , Fumar/inmunología , Nicotiana/química
4.
Curr Med Chem ; 16(13): 1656-72, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19442138

RESUMEN

Anthracyclines are among the most effective anticancer drugs ever developed. Unfortunately, their clinical use is severely limited by the development of a progressive dose-dependent cardiomyopathy that irreversibly evolves toward congestive heart failure, usually refractory to conventional therapy. The pathophysiology of anthracycline-induced cardiomyopathy remains controversial and incompletely understood. The current thinking is that anthracyclines are toxic per se but gain further cardiotoxicity after one-electron reduction with ROS overproduction or two-electron reduction with conversion to C-13 alcohol metabolites. ROS overproduction can probably be held responsible for anthracycline acute cardiotoxicity, but not for all the aspects of progressive cardiomyopathy. Intramyocardial formation of secondary alcohol metabolites might play a key role in promoting the progression of cardiotoxicity toward end-stage cardiomyopathy and congestive heart failure. In this review we also discuss recent developments in: a) the molecular mechanisms underlying anthracycline-induced cardiotoxicity; b) the role of cytosolic NADPH-dependent reductases in anthracycline metabolism; c) the influence of genetic polymorphisms on cardiotoxicity outcome; d) the perspectives on the most promising strategies for limiting or preventing anthracycline-induced cardiotoxicity, focusing on controversial aspects and on recent data regarding analogues of the natural compounds, tumor-targeted formulations and cardioprotective agents.


Asunto(s)
Antraciclinas/toxicidad , Corazón/efectos de los fármacos , Citosol/metabolismo , Humanos , NADP/metabolismo , Polimorfismo Genético , Especies Reactivas de Oxígeno/metabolismo
5.
J Dent ; 35(3): 187-94, 2007 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-16979810

RESUMEN

OBJECTIVES: Methacrylic compounds such as 2-hydroxyethyl methacrylate (HEMA), triethylene glycol dimethacrylate (TEGDMA) and bisphenol A glycerolate (1 glycerol/phenol) dimethacrylate (Bis-GMA) are largely present in auto- or photopolymerizable composite resins. Since the polymerization reaction is never complete, these molecules are released into the oral cavity tissues and biological fluids where they could cause local adverse effects. The aim of this work was to verify the hypothesis that the biological effects of HEMA, TEGDMA and Bis-GMA - at a non-cytotoxic concentration - depend on the interaction with mitochondria and exert consequent alterations of energy metabolism, GSH levels and the related pathways in human promyelocytic cell line (HL-60). METHODS: The biological effects of methacrylic monomers were determined by analyzing the following parameters: GSH concentration, glucose-6-phosphate dehydrogenase (G6PDH) and glutathione reductase (GR) activity, oxygen and glucose consumption and lactate production along with cell differentiation and proliferation. RESULTS: All monomers induced both cellular differentiation and decrease in oxygen consumption. Cells treated with TEGDMA and Bis-GMA showed a significant enhancement of glucose consumption and lactate production. TEGDMA and HEMA induced GSH depletion stimulating G6PDH and GR activity. CONCLUSIONS: All the monomers under study affect the metabolism of HL-60 cells and show differentiating activity. Since alterations in cellular metabolism occurred at compound concentrations well below cytotoxic levels, the changes in energy metabolism and glutathione redox balance could be considered as potential mechanisms for inducing clinical and sub-clinical adverse effects and thus providing useful parameters when testing biocompatibility of dental materials.


Asunto(s)
Resinas Compuestas/farmacología , Materiales Dentales/farmacología , Metabolismo Energético/efectos de los fármacos , Glutatión/metabolismo , Metacrilatos/farmacología , Bisfenol A Glicidil Metacrilato/farmacología , Diferenciación Celular/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Glucosa/metabolismo , Glucosafosfato Deshidrogenasa/efectos de los fármacos , Glutatión Reductasa/efectos de los fármacos , Células HL-60 , Humanos , Ácido Láctico/metabolismo , Mitocondrias/efectos de los fármacos , Consumo de Oxígeno/efectos de los fármacos , Polietilenglicoles/farmacología , Polímeros , Ácidos Polimetacrílicos/farmacología
6.
J Clin Oncol ; 23(4): 808-15, 2005 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-15681525

RESUMEN

PURPOSE: To determine whether tamoxifen or anastrozole prevents gynecomastia and breast pain caused by bicalutamide (150 mg) without compromising efficacy, safety, or sexual functioning. PATIENTS AND METHODS: A double-blind, placebo-controlled trial was performed in patients with localized, locally advanced, or biochemically recurrent prostate cancer. Patients (N = 114) were randomly assigned to either bicalutamide (150 mg/d) plus placebo or in combination with tamoxifen (20 mg/d) or anastrozole (1 mg/d) for 48 weeks. Gynecomastia, breast pain, prostate-specific antigen (PSA), sexual functioning, and serum levels of hormones were assessed. RESULTS: Gynecomastia developed in 73% of patients in the bicalutamide group, 10% of patients in the bicalutamide-tamoxifen group, and 51% of patients in the bicalutamide-anastrozole group (P < .001); breast pain developed in 39%, 6%, and 27% of patients, respectively (P = .006). Baseline PSA level decreased by > or = 50% in 97%, 97%, and 83% of patients in the bicalutamide, bicalutamide-tamoxifen, and bicalutamide-anastrozole groups, respectively (P = .07); and adverse events were reported in 37%, 35%, and 69% of patients, respectively (P = .004). There were no major differences among treatments in sexual functioning parameters from baseline to month 6. Elevated testosterone levels occurred in each group; however, free testosterone levels remained unchanged in the bicalutamide-tamoxifen group because of increased sex hormone-binding globulin levels. CONCLUSION: Anastrozole did not significantly reduce the incidence of bicalutamide-induced gynecomastia and breast pain. In contrast, tamoxifen was effective, without increasing adverse events, at least in the short-term follow-up. These data support the need for a larger study to determine any effect on mortality.


Asunto(s)
Anilidas/efectos adversos , Enfermedades de la Mama/prevención & control , Ginecomastia/prevención & control , Nitrilos/uso terapéutico , Dolor/prevención & control , Neoplasias de la Próstata/tratamiento farmacológico , Tamoxifeno/uso terapéutico , Triazoles/uso terapéutico , Anciano , Anciano de 80 o más Años , Anastrozol , Método Doble Ciego , Humanos , Masculino , Persona de Mediana Edad , Nitrilos/efectos adversos , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/sangre , Neoplasias de la Próstata/psicología , Calidad de Vida , Tamoxifeno/efectos adversos , Testosterona/sangre , Compuestos de Tosilo , Triazoles/efectos adversos
7.
Anticancer Res ; 26(3A): 1849-54, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-16827116

RESUMEN

BACKGROUND: The aim of this study was to examine the expressions of the bcl-2, bax, fas and c-myc apoptosis-related genes in benign prostatic hyperplasia (BPH) and prostate carcinoma (CaP) to determine whether significant differences exist within each disease and between the two groups of patients. The correlation between gene expression and tumour diameter, stage, Gleason score and serum PSA was also investigated. PATIENTS AND METHODS: Tissue specimens from 51 cases of BPH and 27 cases of CaP were examined for bcl-2, bax, fas and c-myc expression by reverse transcriptase-PCR (RT-PCR). RESULTS: In BPH, bcl-2 and bax gave the weakest signals (p < 0.001). In CaP, bcl-2 was the least expressed gene (p < 0.001). In both patient groups, fas and c-myc were the most highly expressed genes (p < 0.05). Both bcl-2 and bax were expressed at higher levels in CaP than in BPH (p < 0.02). The bcl-2/bax ratio was lower in CaP than in BPH (p < 0.001). Bcl-2 was more highly expressed in high Gleason grade (> 7) tumours (p < 0.05). In the BPH group, bax showed a positive relationship with fas (p < 0.01), while the bcl-2 level inversely correlated with that of c-myc (p < 0.05). CONCLUSION: Our data showed that all the apoptosis-related genes were expressed in both BPH and CaP. The stronger expression of bax and the lower bcl-2/bax ratio observed in CaP may suggest a pro-apoptotic stimulus, while the higher bcl-2 levels appear to counterbalance the tendency to cell death.


Asunto(s)
Apoptosis/genética , Hiperplasia Prostática/genética , Neoplasias de la Próstata/genética , Anciano , Anciano de 80 o más Años , Expresión Génica , Humanos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Hiperplasia Prostática/metabolismo , Hiperplasia Prostática/patología , Neoplasias de la Próstata/metabolismo , Neoplasias de la Próstata/patología , Proteínas Proto-Oncogénicas c-bcl-2/biosíntesis , Proteínas Proto-Oncogénicas c-bcl-2/genética , Proteínas Proto-Oncogénicas c-myc/biosíntesis , Proteínas Proto-Oncogénicas c-myc/genética , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Proteína X Asociada a bcl-2/biosíntesis , Proteína X Asociada a bcl-2/genética , Receptor fas/biosíntesis , Receptor fas/genética
8.
Biochim Biophys Acta ; 789(3): 343-6, 1984 Sep 25.
Artículo en Inglés | MEDLINE | ID: mdl-6477937

RESUMEN

Ascorbic acid, isoascorbic acid and dehydroascorbic acid inhibit bovine kidney alkaline phosphatase activity. Ascorbic acid free radicals seem not to be involved. Dialysis does not make the inactivation reversible. A competitive mechanism can be inferred from experiments with phosphate and substrates, which block the activity decay. The influence of temperature, pH, other inhibitors and tertiary structure modifications on the inactivation process is also investigated.


Asunto(s)
Fosfatasa Alcalina/antagonistas & inhibidores , Ácido Ascórbico/farmacología , Animales , Unión Competitiva , Bovinos , Ácido Deshidroascórbico/farmacología , Concentración de Iones de Hidrógeno , Riñón/enzimología , Relación Estructura-Actividad , Temperatura
9.
Biochim Biophys Acta ; 1100(3): 235-41, 1992 Jun 19.
Artículo en Inglés | MEDLINE | ID: mdl-1351746

RESUMEN

Ubiquinol-1 in aerated aqueous solution inactivates several enzymes--alanine aminotransferase, alkaline phosphatase, Na+/K(+)-ATPase, creatine kinase and glutamine synthetase--but not isocitrate dehydrogenase and malate dehydrogenase. Ubiquinone-1 and/or H2O2 do not affect the activity of alkaline phosphatase and glutamine synthetase chosen as model enzymes. Dioxygen and transition metal ions, even if in trace amounts, are essential for the enzyme inactivation, which indeed does not occur under argon atmosphere or in the presence of metal chelators. Supplementation with redox-active metal ions (Fe3+ or Cu2+), moreover, potentiates alkaline phosphatase inactivation. Since catalase and peroxidase protect while superoxide dismutase does not, hydrogen peroxide rather than superoxide anion seems to be involved in the inactivation mechanism through which oxygen active species (hydroxyl radical or any other equivalent species) are produced via a modified Haber-Weiss cycle, triggered by metal-catalyzed oxidation of ubiquinol-1. The lack of efficiency of radical scavengers and the almost complete protection afforded by enzyme substrates and metal cofactors indicate a 'site-specific' radical attack as responsible for the oxidative damage.


Asunto(s)
Inhibidores Enzimáticos/farmacología , Metales/farmacología , Ubiquinona/metabolismo , Alanina Transaminasa/antagonistas & inhibidores , Alanina Transaminasa/metabolismo , Fosfatasa Alcalina/antagonistas & inhibidores , Fosfatasa Alcalina/metabolismo , Animales , Catálisis , Cationes , Bovinos , Creatina Quinasa/antagonistas & inhibidores , Creatina Quinasa/metabolismo , Depuradores de Radicales Libres , Glutamato-Amoníaco Ligasa/antagonistas & inhibidores , Glutamato-Amoníaco Ligasa/metabolismo , Concentración de Iones de Hidrógeno , Oxidación-Reducción , Ácido Pentético/farmacología , ATPasa Intercambiadora de Sodio-Potasio/antagonistas & inhibidores , ATPasa Intercambiadora de Sodio-Potasio/metabolismo , Especificidad por Sustrato , Porcinos
10.
J Clin Endocrinol Metab ; 90(4): 2005-14, 2005 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-15634716

RESUMEN

The goal of this study was to find the most favorable injection interval of norethisterone enanthate (NETE) plus testosterone undecanoate (TU) in terms of gonadotropin, sperm suppression, and prostatic effects. Fifty normal men were randomly assigned to receive NETE 200 mg plus TU 1000 mg every 8 wk (n = 10), every 12 wk (n = 10), every 6 wk for 12 wk and then every 12 wk (n = 10), and every 6 wk for 12 wk and thereafter TU 1000 mg plus placebo every 12 wk (n = 10), and placebo plus placebo every 6 wk for 12 wk and then every 12 wk (n = 10) for 48 wk. Semen analyses, blood drawings, physical examinations, and prostate ultrasounds were performed throughout the study. Of the men in the 8-wk injection group, 90% (nine of 10) achieved azoospermia, compared with 37.5% (three of eight) in the 12-wk injection group (P = 0.019). TU plus placebo injected every 12 wk did not maintain sperm suppression. Prostate volumes did not change significantly in either group. In conclusion, these data suggest that the combined administration of NETE and TU at 8-wk intervals represents an effective hormonal contraceptive regimen.


Asunto(s)
Anticoncepción , Noretindrona/análogos & derivados , Noretindrona/administración & dosificación , Próstata/efectos de los fármacos , Espermatogénesis/efectos de los fármacos , Testículo/efectos de los fármacos , Testosterona/análogos & derivados , Testosterona/administración & dosificación , Adolescente , Adulto , Combinación de Medicamentos , Hormona Folículo Estimulante/sangre , Humanos , Inyecciones , Hormona Luteinizante/sangre , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Recuento de Espermatozoides , Testosterona/sangre
11.
J Clin Oncol ; 12(1): 7-13, 1994 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-8270987

RESUMEN

PURPOSE: Interferons have shown a definite activity in the intravesical treatment of residual papillary bladder cancer or carcinoma in situ (CIS). The purpose of the present study was to investigate the efficacy of interferon alfa-2b (IFN) as prophylactic treatment of superficial bladder cancer. PATIENTS AND METHODS: Two hundred eighty-seven patients with primary pTa G2, pT1 G1 to G2 superficial bladder cancer, following complete transurethral resection (TUR), were randomly allocated to receive intravesical treatment, either with IFN (50 x 10(6) IU) or mitomycin (MIT-C; 40 mg). Drugs were instilled on a weekly basis for a total of 8 weeks. RESULTS: MIT-C was superior to IFN treatment with respect to time to recurrence, relative recurrence rate, recurrence rate per 100 patients per month, and recurrence tumor rate per 100 patients per month. This difference was particularly evident in patients with pTa G2 tumors. After multivariate analysis, the number of primary tumors and tumor grade were the best predictors of recurrence, while allocated treatment had only a moderate effect. Intravesical treatment was well tolerated in both arms. However, more local toxicity was experienced by patients treated with MIT-C. On the other hand, fever occurred significantly more frequently in patients treated with IFN. CONCLUSION: IFN was less effective, although locally better tolerated, than MIT-C as prophylactic treatment of primary superficial bladder cancer.


Asunto(s)
Carcinoma in Situ/tratamiento farmacológico , Carcinoma Papilar/tratamiento farmacológico , Interferón-alfa/uso terapéutico , Mitomicina/uso terapéutico , Recurrencia Local de Neoplasia/prevención & control , Neoplasias de la Vejiga Urinaria/prevención & control , Administración Intravesical , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma in Situ/patología , Carcinoma Papilar/patología , Cistoscopía , Esquema de Medicación , Femenino , Humanos , Interferón alfa-2 , Interferón-alfa/administración & dosificación , Interferón-alfa/efectos adversos , Masculino , Persona de Mediana Edad , Mitomicina/administración & dosificación , Mitomicina/efectos adversos , Proteínas Recombinantes , Estadística como Asunto , Resultado del Tratamiento , Neoplasias de la Vejiga Urinaria/patología
12.
Diabetes ; 46(11): 1853-8, 1997 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-9356036

RESUMEN

Oxidative stress is postulated to be increased in patients with IDDM. Accumulating evidence suggests that oxidative cell injury caused by free radicals contributes to the development of IDDM complications. On the other side, a decreased efficiency of antioxidant defenses (both enzymatic and nonenzymatic) seems to correlate with the severity of pathological tissue changes in IDDM. Thus, we determined plasma antioxidant defenses, measuring the total radical-trapping antioxidant capacity (TRAP) and the two markers of oxidative stress, lipid hydroperoxides (ROOHs) and conjugated dienes, in 72 patients with well-controlled IDDM and without evident complications, compared with 45 nondiabetic subjects. Compared with control subjects, IDDM patients showed significantly reduced plasma TRAP (669 +/- 131 vs. 955 +/- 104 micromol/l, P < 0.001) and significantly increased levels of ROOHs (7.13 +/- 2.11 vs. 2.10 +/- 0.71 micromol/l, P < 0.001) and conjugated dienes (0.0368 +/- 0.0027 vs. 0.0328 +/- 0.0023 arbitrary units [AU], P < 0.01), especially in the trans-trans conformation (0.0340 +/- 0.0028 vs. 0.0259 +/- 0.0022 AU, P < 0.001), with a concurrent reduction of conjugated dienes in the cis-trans conformation (0.0028 +/- 0.0011 vs. 0.0069 +/- 0.0012 AU, P < 0.001). The oxidative parameters studied did not appear to be correlated with metabolic control (HbA1c levels) and lipid profile (cholesterol or triglyceride levels). The reduced TRAP and the increased ROOH and conjugated diene plasma levels, together with the decreased ratio of cis-trans/trans-trans conjugated dienes, which reflects an altered redox status of plasma, indicate that in IDDM patients, oxidative stress is enhanced and antioxidant defenses are defective, regardless of diabetes duration, metabolic control, or presence of complications.


Asunto(s)
Antioxidantes/análisis , Diabetes Mellitus Tipo 1/sangre , Peroxidación de Lípido , Peróxidos Lipídicos/sangre , Adulto , Presión Sanguínea , Colesterol/sangre , Diabetes Mellitus Tipo 1/fisiopatología , Femenino , Hemoglobina Glucada/análisis , Humanos , Masculino , Estrés Oxidativo , Valores de Referencia , Análisis de Regresión , Triglicéridos/sangre
13.
Eur Rev Med Pharmacol Sci ; 19(23): 4469-80, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26698240

RESUMEN

OBJECTIVE: The aim of this study is to evaluate if the cytotoxic effects of the Surefil SDR flow, bulk fill flowable composite resin and three conventional flowable materials (Venus Diamond Flow, Filtex Supreme XTE Flowable and Enamel plus HRi Flow) correlated with the conversion degree (DC); hardness and depth of cure are also assessed. MATERIALS AND METHODS: Disks of each materials--cured using LED lamp--are utilized to evaluate DC (by FT-IR technique), amount of leached monomers (by HPLC technique), hardness (by Vickers hardness tester) and cytotoxicity (by MTT test). RESULTS: All tested materials show light cytotoxic effects, independently from DC values. Both the latter parameter and the hardness, in fact, change in function of thickness and type of material. HPLC results show that the monomers amount leached from each specimen is influenced by thickness but it is always very low which justifies the absence of any cytotoxic effect. CONCLUSIONS: Our findings suggest that there are not statistically significant differences in cytotoxicity in all experimental conditions, notwithstanding the differences in hardness and in degree of conversion.


Asunto(s)
Resinas Compuestas/toxicidad , Materiales Dentales/toxicidad , Ensayo de Materiales/métodos , Supervivencia Celular/efectos de los fármacos , Células Cultivadas , Resinas Compuestas/normas , Citotoxinas/normas , Citotoxinas/toxicidad , Materiales Dentales/normas , Dureza , Humanos , Ensayo de Materiales/normas , Espectroscopía Infrarroja por Transformada de Fourier/métodos
14.
Prostate Cancer Prostatic Dis ; 18(3): 270-5, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26055663

RESUMEN

BACKGROUND: To assess whether the addition of clinical Gleason score (Gs) 3+4 to the Prostate Cancer Research International: Active Surveillance (PRIAS) criteria affects pathologic results in patients who are potentially suitable for active surveillance (AS) and to identify possible clinical predictors of unfavourable outcome. METHODS: Three hundred and twenty-nine men who underwent radical prostatectomy with complete clinical and follow-up data and who would have fulfilled the inclusion criteria of the PRIAS protocol at the time of biopsy except for the addition of biopsy Gs=3+4 and with at least 10 cores taken have been evaluated. One experienced genitourinary pathologist selected those with real Gs=3+3 and 3+4 in only one core according to the 2005 International Society of Urological Pathology criteria. The primary end point was the proportion of unfavourable outcome (nonorgan confined disease or Gs⩾4+3). Logistic regressions explored the association between preoperative characteristics and the primary end point. RESULTS: Two hundred and four patients were evaluated and 46 (22.5%) patients harboured unfavourable disease at final pathology. After a median follow-up of 73.5 months, there was no cancer-specific death, and 4 (2.0%) patients had biochemical relapse. There were no significant differences in terms of high Gs, locally advanced disease, unfavourable disease and biochemical relapse-free survival among patients with clinical Gs=3+3 vs Gs=3+4. At multivariable analysis, the presence of atypical small acinar proliferation (ASAP) and lower number of core taken were independently associated with a higher risk of unfavourable disease. CONCLUSION: The inclusion of Gs=3+4 in patients suitable to AS does not enhance the risk of unfavourable disease after radical prostatectomy. Additional factors such as number of cores taken and the presence of ASAP should be considered in patients suitable for AS.


Asunto(s)
Prostatectomía , Neoplasias de la Próstata/patología , Neoplasias de la Próstata/cirugía , Anciano , Biopsia , Humanos , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Metástasis de la Neoplasia , Estadificación de Neoplasias , Antígeno Prostático Específico/sangre , Prostatectomía/métodos , Neoplasias de la Próstata/mortalidad , Neoplasias de la Próstata/terapia , Curva ROC
15.
Actas Urol Esp ; 39(1): 57-62, 2015.
Artículo en Inglés, Español | MEDLINE | ID: mdl-24775811

RESUMEN

INTRODUCTION: Radical orchiectomy (RO) is still considered the standard of care for malignant germ cell tumours, which represent the vast majority of the palpable testicular masses. In those patients diagnosed with small testicular masses (STMs), testis-sparing surgery (TSS) could be an alternative treatment to RO. The aim of this updated review is to evaluate the current indications for TSS, and discuss the oncological and functional results of patients who had undergone organ-sparing surgery for STMs. EVIDENCE ACQUISITION: A non-systematic review of the Literature using the Medline database has been performed, including a free-text protocol using the terms "testis-sparing surgery", "testicular sparing surgery", "partial orchiectomy", "testis tumour", "sex cord tumour", and "testis function". Other significant studies cited in the reference lists of the selected papers were also evaluated. EVIDENCE SYNTHESIS: No randomized controlled trials comparing TSS with radical orchiectomy have been reported yet. In those patients with normal contra-lateral testis, the use of TSS is still controversial. In selected cases of gonadal masses < 2 cm, TSS seems to be a safe and feasible treatment option. Frozen section examination allows us to discriminate between benign and malignant neoplasms during TSS. Intermediate and long-term follow-up results showed no significant risk of local and distant recurrences in the main series reported in the literature. CONCLUSIONS: TSS is an effective treatment for STMs in selected patients, limiting the unnecessary surgical over-treatments, without compromising the oncological and functional outcomes. Further studies are needed in order to confirm the oncological safety.


Asunto(s)
Tratamiento Conservador , Tratamientos Conservadores del Órgano/métodos , Neoplasias Testiculares/cirugía , Humanos , Masculino , Orquiectomía , Recuperación de la Función , Neoplasias Testiculares/patología , Testículo , Resultado del Tratamiento
16.
Eur J Surg Oncol ; 41(3): 346-52, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25583459

RESUMEN

INTRODUCTION: Nephron-sparing surgery (NSS) has become the standard of care for the surgical management of small and clinically localized renal cell carcinoma (RCC). The conservative management of those RCCs is increasing over time. Aim of this study was to report a snapshot of the clinical, perioperative and oncological results after NSS for RCC in Italy. MATERIAL AND METHODS: We evaluated all patients who underwent conservative surgical treatment for renal tumours between January 2009 and December 2012 at 19 urological Italian Centers (RECORd project). Perioperative, radiological and histopathological data were recorded. Surgical eras (2009 vs 2012 and year periods 2009-2010 vs 2011-2012) were compared. RESULTS: Globally, 983 patients were evaluated. More recently, patients undergoing NSS were found to be significantly younger (p = 0.05) than those surgically treated in the first study period, with a significantly higher rate of NSS with relative and imperative indication (p < 0.001). More recently, a higher percentage of procedures for cT1b or cT2 renal tumours was observed (p = 0.02). Utilization rate of open partial nephrectomy (OPN) constantly decreased during years, laparoscopic partial nephrectomy (LPN) remained almost constant while robot-assisted partial nephrectomy (RAPN) increased. The rate of clampless NSS constantly increased over time. The use of at least one haemostatic agent has been significantly more adopted in the most recent surgical era (p < 0.001). CONCLUSIONS: The utilization rate of NSS in Italy is increasing, even in elective and more complex cases. RAPN has been progressively adopted, as well as the intraoperative utilization of haemostatic agents and the rate of clampless procedures.


Asunto(s)
Carcinoma de Células Renales/cirugía , Neoplasias Renales/cirugía , Nefrectomía/métodos , Nefronas , Tratamientos Conservadores del Órgano/métodos , Distribución por Edad , Anciano , Carcinoma de Células Renales/patología , Estudios de Cohortes , Femenino , Humanos , Italia , Neoplasias Renales/patología , Masculino , Persona de Mediana Edad , Nefrectomía/tendencias , Tempo Operativo , Tratamientos Conservadores del Órgano/tendencias , Estudios Prospectivos , Procedimientos Quirúrgicos Robotizados/tendencias , Resultado del Tratamiento
17.
J Clin Endocrinol Metab ; 48(1): 9-12, 1979 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-422709

RESUMEN

An unexpected 20-week-old pregnancy was found in a young acromegalic who had been treated with 10 mg bromocriptine/day for 10 months. The drug was continued throughout the period of gestation. No growth of the pituitary adenoma was noticed. The intrauterine development of the fetus was normal. Bromocriptine therapy had no discernible effect on the expected patterns of secretion of placental hormones, but inhibited completely the increase of PRL in the serum of the mother. Maternal plasma GH concentrations were very high in spite of the treatment and progressively declined after delivery. The plasma GH level was normal in the child, but PRL was very low at birth and increased in the following days. The expected high PRL concentration was found in the amniotic fluid. This case study suggests that bromocriptine crosses the human placenta and affects the fetal pituitary, maternal GH does not influence fetal or amniotic GH, and amniotic fluid PRL correlates poorly with either maternal or fetal blood levels and is not affected by bromocriptine.


Asunto(s)
Acromegalia/sangre , Líquido Amniótico/metabolismo , Bromocriptina/uso terapéutico , Hormona del Crecimiento/metabolismo , Complicaciones del Embarazo/sangre , Prolactina/metabolismo , Acromegalia/complicaciones , Acromegalia/tratamiento farmacológico , Adulto , Niño , Femenino , Sangre Fetal/metabolismo , Hormona del Crecimiento/sangre , Humanos , Recién Nacido , Intercambio Materno-Fetal , Embarazo , Prolactina/sangre
18.
Mol Aspects Med ; 15 Suppl: s109-15, 1994.
Artículo en Inglés | MEDLINE | ID: mdl-7752822

RESUMEN

The interaction of hydrogen peroxide with haem proteins leads readily to the formation of myoglobin and/or haemoglobin higher oxidation states (MbIV and/or HbIV), which are capable of promoting the oxidation of cellular costituents and are probably to blame for myocardic tissue damage in ischaemia/reperfusion. This study supports the evidence that the reduced form of Coenzyme Q, like other reducing agents, has an antioxidant activity exerted through the progressive reduction of ferryl forms (MbIV and/or HbIV) back to met and oxy forms (Mb and/or HbIIO2). Furthermore, the strong inactivation afforded by ferryl states of myoglobin on several enzymes, especially creatine kinase (CK), can be prevented by the addition of ubiquinol which protects the enzyme from the oxidative modifications. The ability of ubiquinol to recycle ferryl states of haem proteins provides a novel antioxidant mechanism for Coenzyme Q, besides its direct or indirect antiperoxidative activity, and may represent an important defense mechanism against oxidative tissue injury.


Asunto(s)
Antioxidantes/farmacología , Hemoglobinas/metabolismo , Mioglobina/metabolismo , Ubiquinona/farmacología , Animales , Apoproteínas/metabolismo , Bovinos , Creatina Quinasa/metabolismo , Radicales Libres , Caballos , Humanos , Metamioglobina/metabolismo , Oxidación-Reducción , Ubiquinona/análogos & derivados
19.
Eur J Cancer ; 29A(8): 1088-93, 1993.
Artículo en Inglés | MEDLINE | ID: mdl-8518017

RESUMEN

From March 1987 to December 1990, 373 patients with stage C and D prostate cancer were randomized to receive either goserelin acetate alone or goserelin acetate plus flutamide. At a median follow-up time of 24 months, there was no significant difference in the response rate, progression-free and overall survival between the two treatment groups. In particular, median time to progression was 18 months in the goserelin arm and 24 months in the combined treatment arm (P = 0.09). However, median time to progression in stage D patients was 12 months in both treatment groups. Median time to death was 32 and 34 months, respectively. The combination regimen produced a more rapid normalisation of prostatic acid phosphatase levels and a prompt relief of bone pain. However, significantly more patients in the combination arm experienced treatment-related side-effects such as diarrhoea and increases in transaminase levels. The concurrent use of goserelin acetate and flutamide does not seem to significantly improve the results that can be achieved with goserelin acetate alone.


Asunto(s)
Flutamida/uso terapéutico , Goserelina/uso terapéutico , Neoplasias de la Próstata/tratamiento farmacológico , Fosfatasa Ácida/metabolismo , Anciano , Anciano de 80 o más Años , Humanos , Masculino , Persona de Mediana Edad , Neoplasias de la Próstata/enzimología , Neoplasias de la Próstata/patología , Factores de Tiempo
20.
Int J Radiat Oncol Biol Phys ; 33(1): 173-8, 1995 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-7642415

RESUMEN

PURPOSE: The aim of this Phase II study was to determine a bladder-sparing treatment in patients with invasive bladder cancer, allowing a better quality of life. Objectives were to test toxicity and disease-free and overall survival of patients given an alternated chemo-radiotherapy definitive treatment. METHODS AND MATERIALS: Seventy-six patients with bladder cancer Stage T1G3 through T4 N0 M0 were entered in the same chemotherapy regimen (Cisplatin 20 mg/mq and 5-Fluorouracil 200 mg/mq daily for 5 days) alternated with different radiotherapy scheduling, the first 18 patients received two cycles of 20 Gy/10 fractions/12 days each; the second group of 58 patients received two cycles of 25 Gy/10 fractions/12 days each (the last 21 patients received Methotrexate 40 mg/mq instead of 5-Fluorouracil). RESULTS: A clinical complete response was observed in 57 patients (81%), partial response in 7 patients (10%), and a nonresponse in 6 patients (9%). At a median follow-up of 45 months, 33 patients (47%) were alive and free of tumor. The 6-year overall survival and progression-free survival was 42% and 40%, respectively. Systemic side effects were mild, while a moderate or severe local toxicity was observed in 14 patients and 13 patients (about 20%), respectively. CONCLUSION: Our conservative combination treatment allowed bladder-sparing in a high rate of patients and resulted in a survival comparable to that reported after radical cystectomy.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias de la Vejiga Urinaria/tratamiento farmacológico , Neoplasias de la Vejiga Urinaria/radioterapia , Adulto , Anciano , Vacuna BCG/uso terapéutico , Quimioterapia Adyuvante , Cisplatino/administración & dosificación , Cistectomía , Supervivencia sin Enfermedad , Femenino , Fluorouracilo/administración & dosificación , Humanos , Masculino , Persona de Mediana Edad , Metástasis de la Neoplasia , Recurrencia Local de Neoplasia/terapia , Selección de Paciente , Inducción de Remisión , Terapia Recuperativa , Neoplasias de la Vejiga Urinaria/cirugía
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