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1.
Breast Cancer ; 30(5): 802-809, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37358721

RESUMEN

INTRODUCTION: The oncoplastic conservative surgery was developed as a natural evolution of traditional surgery, attempting to improve the therapeutic and aesthetic outcomes where tumor resection could be followed by not-adequate results. Our primary aim is to evaluate how patient satisfaction and quality-of-life after conservative oncoplastic surgery, using BREAST-Q (BCT Module), change pre- and post-operatively. The secondary aim is to compare patient-reported outcome after oncoplastic or traditional conservative surgery. PATIENTS AND METHODS: We enrolled 647 patients who underwent traditional conservative surgery or oncoplastic surgery from January 2020 to December 2022. Only 232 women (35.9%) completed the BREAST-Q questionnaire on a web-based platform, at the preoperative phase and 3 months after treatment. RESULTS: The average score of "Psychosocial well-being" and "Satisfaction with Breasts" 3 months after surgery showed a statistically significant improvement, while the average score for "Physical well-being: Chest" at 3 months showed a worsening compared to the baseline. "Sexual well-being" did not show statistically significant change. A significant difference between the post-operative outcome of oncoplastic surgery and traditional surgery was observed only for Physical well-being (better for traditional surgery). CONCLUSIONS: The study showed significant improvement in patient-reported outcomes 3 months after the surgery, except for physical discomfort that increases especially after oncoplastic surgery. Furthermore, our data, as well as many others, point to the appropriateness of using OCS where there is an effective indication, while the perspective of patients cannot find significant superiority over TCS in any of the areas analyzed.


Asunto(s)
Neoplasias de la Mama , Mamoplastia , Humanos , Femenino , Mastectomía Segmentaria/efectos adversos , Mastectomía Segmentaria/métodos , Satisfacción del Paciente , Estudios Prospectivos , Calidad de Vida , Neoplasias de la Mama/cirugía , Mamoplastia/métodos , Satisfacción Personal , Resultado del Tratamiento
2.
Breast Cancer Res Treat ; 178(3): 557-564, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31512090

RESUMEN

PURPOSE: In order to better define the breast cancer (BC) genetic risk factors in men, a germline investigation was carried out on 81 Male BC cases by screening the 24 genes involved in BC predisposition, genome stability maintenance and DNA repair mechanisms by next-generation sequencing. METHODS: Germline DNAs were tested in a custom multi-gene panel focused on all coding exons and exon-intron boundaries of 24 selected genes using two amplicon-based assays on PGM-Ion Torrent (ThermoFisher Scientific) and MiSeq (Illumina) platforms. All variants were recorded and classified by using a custom pipeline. RESULTS: Clinical pathological data and the family history of 81 Male BC cases were gathered and analysed, revealing the average age of onset to be 61.3 years old and that in 35 cases there was a family history of BC. Our genetic screening allowed us to identify a germline mutation in 22 patients (23%) in 4 genes: BRCA2, BRIP1, MUTYH and PMS2. Moreover, 12 variants of unknown clinical significance (VUS) in 9 genes (BARD1, BRCA1, BRIP1, CHEK2, ERCC1, NBN, PALB2, PMS1, RAD50) were predicted as potentially pathogenic by in silico analysis bringing the mutation detection rate up to 40%. CONCLUSION: As expected, a positive family history is a strong predictor of germline BRCA2 mutations in male BC. Understanding the potential pathogenicity of VUS represents an extremely urgent need for the management of BC risk in Male BC cases and their own families.


Asunto(s)
Neoplasias de la Mama Masculina/genética , Reparación del ADN/genética , Predisposición Genética a la Enfermedad/genética , Variación Genética , Secuenciación de Nucleótidos de Alto Rendimiento , Proteínas de Neoplasias/genética , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama Masculina/sangre , Neoplasias de la Mama Masculina/patología , Pruebas Genéticas , Genoma Humano/genética , Mutación de Línea Germinal , Humanos , Masculino , Persona de Mediana Edad , Linaje
7.
J Appl Microbiol ; 113(3): 686-92, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22681484

RESUMEN

AIMS: To investigate Norovirus (NoV) contamination of mussels, clams and oysters harvested in two class B harvesting areas of the delta of the Po river, to choose a species as an indicator. METHODS AND RESULTS: Environmental parameters (temperature and salinity) and hydrometric levels of the tributary river were measured. Seventy shellfish samples (35 samples per area) were examined for Escherichia coli and NoV (GI and GII). NoV contamination was found in 51.4% of samples, of which, 2.9% contained only NoV GI, 14.3% only NoV GII, while the majority of the samples (34.3%) contained both genogroups. Most of the positive results (90.0%) were obtained in the period between November 2008 and April 2009. CONCLUSIONS: No significant differences were found between the results from the two harvesting areas and the three shellfish species. However, on the basis of the average C(t) values, the recovery rate (from 0.46 to 1.15%) and the distribution of positive results in the samplings, mussels seem to be a suitable indicator species to monitor viral contamination in these areas. SIGNIFICANCE AND IMPACT OF THE STUDY: The data allow the optimization of monitoring plans to improve the prevention strategies in terms of money and time, by the intensification of controls in the cold season and the use of one species as indicator.


Asunto(s)
Contaminación de Alimentos , Norovirus/aislamiento & purificación , Mariscos/virología , Animales , Bivalvos/virología , Infecciones por Caliciviridae/veterinaria , Infecciones por Caliciviridae/virología , Escherichia coli/aislamiento & purificación , Italia , Norovirus/genética , Ostreidae/virología , ARN Viral/genética
8.
Lett Appl Microbiol ; 54(4): 325-9, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22268557

RESUMEN

AIMS: Eating raw or insufficiently cooked bivalve molluscs contaminated with human noroviruses (NVs) can result in acute cases of gastroenteritis in humans. Manila clams (Ruditapes philippinarum) are particularly prone to exposure to NVs due to the brackish environment in which they are farmed which is known to be susceptible to human faecal contamination. High hydrostatic pressure processing (HHP) is a food treatment technique that has been shown to inactivate NV. METHODS AND RESULTS: In this study we investigated the ability of HHP to inactivate murine norovirus (MNV-1), a recognised surrogate for NV, in experimentally contaminated manila clams. Pools of contaminated live clams were subjected to hydrostatic pressure ranging from 300 to 500 MPa for different time intervals of between one and 10 min. The trial was repeated three times, at monthly intervals. CONCLUSIONS: Virus vitality post-treatment was assessed and the data obtained indicates that the use of high hydrostatic pressures of at least 500 MPa for 1 min was effective in inactivating MNV-1. SIGNIFICANCE AND IMPACT OF THE STUDY: HHP results to be an effective technique that could be applied to industrial process to obtain safe Manila clams ready to eat.


Asunto(s)
Bivalvos/virología , Contaminación de Alimentos/prevención & control , Presión Hidrostática , Norovirus , Alimentos Marinos/virología , Animales , Infecciones por Caliciviridae/prevención & control , Infecciones por Caliciviridae/virología , Gastroenteritis/prevención & control , Gastroenteritis/virología , Humanos , Ratones
9.
Lett Appl Microbiol ; 47(5): 467-74, 2008 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-18793257

RESUMEN

AIMS: To investigate the presence of enteric viruses [hepatitis A (HAV) and norovirus (NoV)] in shellfish harvested from the deltaic area of the Po river in relation to environmental factors. METHODS AND RESULTS: Fortnightly sampling of shellfish was carried out in two lagoon areas (category B production areas) and one sea area (category A). Environmental parameters in the lagoon and hydrometric level of the tributary river were monitored throughout the sampling period. Samples (n = 120) were analysed for bacterial (E. coli and Salmonella) and viral (HAV and NoV) contamination; samples from category B areas were analysed before and after purification treatment. All the samples were negative for HAV whereas 10 samples (8.3%), all harvested in the lagoon areas, were positive for NoV. Sequencing identified the strains as genotypes II.4 and II.b. None of the samples was found to be contaminated after depuration. CONCLUSIONS: The monitoring showed a low frequency of NoV presence; viral contamination, detected exclusively in shellfish collected from the deltaic area (category B), could be influenced by the flow of the tributary river. The data collected are useful for the design of targeted prevention strategies and for the modulation of control plans after meteorological events.


Asunto(s)
Virus de la Hepatitis A/aislamiento & purificación , Norovirus/aislamiento & purificación , Mariscos/virología , Animales , Clima , Genotipo , Italia , ARN Viral/genética , Análisis de Secuencia de ADN
10.
Minerva Pediatr ; 59(3): 191-7, 2007 Jun.
Artículo en Italiano | MEDLINE | ID: mdl-17519863

RESUMEN

AIM: This study was aimed at assessing eating habits among preadolescents living in Brianza, with a special focus on snacking' and breakfast' habits. METHODS: The research was carried out in 12 post-primary schools in Brianza and included 802 students attending 43 different classes (49.3% males and 50.7% females; mean age:12.6 years). The research tool was an ad hoc questionnaire administered to the preadolescents attending school on the day of the research. Data were analyzed using program Epi Info 6. RESULTS: Many students (78.3%) had breakfast in the morning of the questionnaire's administration. Among those perceiving themselves as overweight, not having breakfast is more common than among others. This information is the opposite of what preadolescents say when inquired about their habit to have ''a good breakfast'': only 36.8% of the responders declare that it happens on a daily basis. As to snacking, 18.7% of the students declare to be used to having multiple snacking during the day; during school recess on the day of the survey, 39.9% of respondents declared that they had eaten various industrial snacks, while 27.4% had cakes or fresh bread, 1.2% both of them and 0.6% fruit. On a daily basis, 59.5% report to eat various and different fruits and 62.9% report the same when inquired about vegetables. CONCLUSION: Considering the importance of a correct nutrition during developmental age and the importance of the phase of adolescence in establishing permanent nutritional habits that will last life-long, it is thus an educational priority to help preadolescents to choose the best foods for their health and well being.


Asunto(s)
Conducta Alimentaria , Estilo de Vida , Instituciones Académicas , Estudiantes/estadística & datos numéricos , Adolescente , Niño , Femenino , Preferencias Alimentarias , Frutas , Conductas Relacionadas con la Salud , Humanos , Italia/epidemiología , Masculino , Encuestas Nutricionales , Encuestas y Cuestionarios , Verduras
11.
Ann Ig ; 18(3): 237-47, 2006.
Artículo en Italiano | MEDLINE | ID: mdl-16821501

RESUMEN

The pattern of use of emergency department of hospitals is on the agenda of policy makers at national, regional and local level. It is still difficult to achieve a balance between the claim for improving the accessibility in order to allow people in need to receive this level of care and the possible its inappropriate use. The triage procedure offers the possibility to assess priorities because the "white codex" identifies those whose access to emergency department could potentially be diverted to an other level of care. The use of the Emergency Department is studied in an affluent area of Northern Italy using an "ad hoc" tool and data linkage in order to describe the process and its possible failures. The results are aimed to give decision makers the opportunity to start addressing these issues on sounder bases particularly as far as triage based assessment is concerned.


Asunto(s)
Servicio de Urgencia en Hospital/estadística & datos numéricos , Adulto , Grupos Diagnósticos Relacionados , Femenino , Humanos , Italia , Masculino , Persona de Mediana Edad , Triaje
12.
J Vet Med A Physiol Pathol Clin Med ; 53(4): 174-8, 2006 May.
Artículo en Inglés | MEDLINE | ID: mdl-16629950

RESUMEN

Elevated levels of P-glycoprotein have been reported in multidrug-resistant tumours in both humans and dogs. In the present study, we investigated the expression of P-glycoprotein in 57 canine mammary gland tumours, 10 mammary gland hyperplasia and seven normal mammary glands by immunohistochemistry. Tissue sections were incubated with an anti-Pgp monoclonal antibody and visualized with En Vision-DAB polymer. Normal and hyperplastic mammary tissues were negative or showed slight cytoplasmic immunoreactivity. Neoplastic cells in benign mammary tumours showed diffuse cytoplasmic staining, in contrast to malignant tumours that showed mainly a membranous staining pattern for Pgp (C494). We observed statistically significant differences among all the different groups of tissues analysed except for benign tumours versus hyperplasia (P = 0.221). Receiver-operating characteristic analysis showed that the best cut-off point to differentiate the threshold to differentiate negative from positive tissue samples was 18.40% of immunostained cells. These results provide a first indication that routine evaluation of Pgp expression in canine mammary gland tumours, taking into consideration a cut-off point for positivity, may be useful for selecting cases for chemotherapy.


Asunto(s)
Miembro 1 de la Subfamilia B de Casetes de Unión a ATP/análisis , Miembro 1 de la Subfamilia B de Casetes de Unión a ATP/inmunología , Enfermedades de los Perros/patología , Neoplasias Mamarias Animales/patología , Animales , Anticuerpos Monoclonales , Área Bajo la Curva , Perros , Femenino , Inmunohistoquímica/veterinaria , Valores de Referencia , Sensibilidad y Especificidad
13.
Ann Ig ; 18(6): 535-42, 2006.
Artículo en Italiano | MEDLINE | ID: mdl-17228610

RESUMEN

This study is aimed at assessing time dedicated to, motivation and involvement in physical activity on behalf of pre-adolescents. 802 students (49.3% boys and 50.7% girls; mean age: 12.6) attending 43 classes of 11 Brianza's post-elementary schools. A questionnaire was prepared and administered to the involved sample. Classes took part in this study through randomized selection and data were analyzed using program Epi Info 6. Most of the respondents (60.1%) stay involved in sport because "it makes me feel good" and 32.4% because sport is "enjoyable and entertaining". Pre-adolescents chose the sport in which they become engaged on the basis of personal inclination (40%), in order to share experiences and their free time with friends (15.4%); 13.7% declare to prefer sport to be practiced in team. (13.7%). The most practiced sport are: football (51.3% boys, 4.5% girls), volley (3.9%-36.4%), dance (0.8%-25.2%) e swimming (9.4%-14%). 80.8% in the sample practice physical activity in settings outside schools and, among these, 51.7% dedicate three or more hours weekly to extra-school activities. There are significant differences (p < 0.05) between males' and females' engagement in physical activity (mean value: 4.1 hours; males: 4.6 h, females: 3.5 h). Among pre-teens, 18% declare to be physically inactive at all; 15.7% do not take part in sport activities because afraid to be bullied or shamed by peers. Research show that males are significantly more involved in physical activity than females.


Asunto(s)
Deportes/estadística & datos numéricos , Estudiantes/estadística & datos numéricos , Adolescente , Niño , Femenino , Conductas Relacionadas con la Salud , Encuestas Epidemiológicas , Humanos , Italia , Masculino , Motivación , Instituciones Académicas , Encuestas y Cuestionarios
15.
Tob Control ; 13(3): 219-21, 2004 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-15333875

RESUMEN

BACKGROUND: Air pollution is a common alibi used by adolescents taking up smoking and by smokers uncertain about quitting. However, environmental tobacco smoke (ETS) causes fine particulate matter (PM) indoor pollution exceeding outdoor limits, while new engines and fuels have reduced particulate emissions by cars. Data comparing PM emission from ETS and a recently released diesel car are presented. METHODS: A 60 m3 garage was chosen to assess PM emission from three smouldering cigarettes (lit sequentially for 30 minutes) and from a TDCi 2000cc, idling for 30 minutes. RESULTS: Particulate was measured with a portable analyser with readings every two minutes. Background PM10, PM2.5, and PM1 levels (mean (SD)) were 15 (1), 13 (0.7), and 7 (0.6) microg/m3 in the car experiment and 36 (2), 28 (1), and 14 (0.8) microg/m3 in the ETS experiment, respectively. Mean (SD) PM recorded in the first hour after starting the engine were 44 (9), 31 (5), and 13 (1) microg/m3, while mean PM in the first hour after lighting cigarettes were 343 (192), 319 (178), and 168 (92) microg/m3 for PM(10), PM2.5, and PM1, respectively (p < 0.001, background corrected). CONCLUSIONS: ETS is a major source of PM pollution, contributing to indoor PM concentrations up to 10-fold those emitted from an idling ecodiesel engine. Besides its educational usefulness, this knowledge should also be considered from an ecological perspective.


Asunto(s)
Contaminantes Atmosféricos/análisis , Contaminación por Humo de Tabaco/análisis , Emisiones de Vehículos/análisis
16.
Hepatogastroenterology ; 48(40): 1030-2, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11490792

RESUMEN

This case describes a rare cause of severe diarrhea that may occasionally plague the postoperative course of pancreatic resections. Although exceedingly rare this complication has already been described in another two patients undergoing pancreatoduodenectomy with diagnosis of duodenojejunal adenocarcinoma. Surgeons dedicated to pancreatic resections as well as pancreatologists caring for these patients should retain this possibility in their cultural background. Diarrhea, due to either exocrine insufficiency or interruption of sympathetic nerves to the small intestine, is a common complaint after pancreatoduodenectomy. A 54-year-old white female after a pancreatoduodenectomy with standard lymphatic clearance developed intractable diarrhea leading to severe cachexia. Recognition of the underlying occult celiac disease and institution of the appropriate dietary regimen allowed quick and expeditious recovery.


Asunto(s)
Enfermedad Celíaca/etiología , Diarrea/etiología , Pancreaticoduodenectomía/efectos adversos , Enfermedad Aguda , Femenino , Humanos , Persona de Mediana Edad , Factores de Tiempo
17.
Cardiologia ; 44(7): 653-9, 1999 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-10476591

RESUMEN

BACKGROUND: The syndrome of angina and normal coronary arteries (syndrome X) comprises a heterogeneous group of patients with typical chest pain, a positive exercise test, angiographically smooth coronary arteries and no evidence of spasm. Magnetic resonance imaging (MRI) has been used to detect areas of myocardial ischemia and/or recent necrosis both in animal and human studies. Most of these studies have been conducted after intravenous administration of the paramagnetic contrast medium gadolinium-DTPA (Gd-DTPA), that is considered a sensitive marker of extracellular, probably ischemic in origin, edema. On the basis of these data, we used MRI to evaluate the possibility of myocardial Gd-DTPA deposition at rest in patients with syndrome X, and to assess the effects of oral treatment with atenolol. METHODS: We have studied 24 patients with syndrome X, 10 patients with coronary artery disease and 10 age-matched control subjects. The protocol was similar in all study subjects. Exercise testing and MRI were undertaken off therapy after coronary arteriography. Following MRI, patients underwent a 10 day treatment period with atenolol and repeated exercise stress test and MRI while on therapy. RESULTS: In all patients with syndrome X and coronary artery disease were observed effort diagnostic ST-segment changes that were associated with angina in 9 (37%) and 7 (70%) patients, respectively. Of 24 patients with syndrome X, 16 (66.6%) showed areas of myocardial enhancement after Gd-DTPA in comparison to the precontrast imaging. In 4 out of 10 patients with coronary artery disease (40%), Gd-DTPA accumulation was documented. Finally, focal Gd-DTPA myocardial enhancement was not observed in any normal control subject. After beta-blockade, 22 (92%) patients with syndrome X and 2 (20%) with coronary artery disease did not show any ischemic ST-segment changes on effort; 14 syndrome X patients (88%) and 2 coronary artery disease patients (50%) showed complete disappearance of the previously Gd-DTPA enhanced areas on MRI. CONCLUSIONS: Patients with syndrome X often exhibit regional accumulation of Gd-DTPA on MRI. The agent is believed to trace interstitial water accumulation as occurs during ischemia and its accumulation is reduced or abolished by treatment with atenolol, probably by different mechanisms. It is likely that an overactivation of the sympathetic outflow to the cardiovascular system can induce most of the abnormalities observed in syndrome X patients. In this context, beta-blockers probably represent the mainstay of the medical treatment of this condition.


Asunto(s)
Antagonistas Adrenérgicos beta/uso terapéutico , Atenolol/uso terapéutico , Medios de Contraste , Gadolinio DTPA , Imagen por Resonancia Magnética , Angina Microvascular/diagnóstico , Adulto , Anciano , Enfermedad Crónica , Angiografía Coronaria , Enfermedad Coronaria/diagnóstico , Enfermedad Coronaria/fisiopatología , Prueba de Esfuerzo/estadística & datos numéricos , Femenino , Hemodinámica , Humanos , Imagen por Resonancia Magnética/métodos , Imagen por Resonancia Magnética/estadística & datos numéricos , Masculino , Angina Microvascular/tratamiento farmacológico , Angina Microvascular/fisiopatología , Persona de Mediana Edad
18.
Cardiologia ; 44(3): 255-60, 1999 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-10327727

RESUMEN

Little information is available on the long-term evolution of left ventricular function of medically treated patients with coronary artery disease and gross limitation of coronary flow reserve. The aim of this study was to assess the long-term evolution of effort tolerance and left ventricular function and their relation to the control of ischemic events in patients with coronary artery disease and prolonged inducible exercise-induced myocardial dysfunction who either declined or were ineligible for cardiac revascularization.


Asunto(s)
Enfermedad Coronaria/fisiopatología , Función Ventricular Izquierda , Anciano , Amlodipino/administración & dosificación , Amlodipino/uso terapéutico , Antiarrítmicos/administración & dosificación , Antiarrítmicos/uso terapéutico , Atenolol/administración & dosificación , Atenolol/uso terapéutico , Fármacos Cardiovasculares/administración & dosificación , Fármacos Cardiovasculares/uso terapéutico , Enfermedad Coronaria/diagnóstico , Enfermedad Coronaria/tratamiento farmacológico , Interpretación Estadística de Datos , Diástole , Diltiazem/administración & dosificación , Diltiazem/uso terapéutico , Quimioterapia Combinada , Ecocardiografía , Electrocardiografía Ambulatoria , Prueba de Esfuerzo , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Nifedipino/administración & dosificación , Nifedipino/uso terapéutico , Nitratos/administración & dosificación , Nitratos/uso terapéutico , Volumen Sistólico , Sístole , Factores de Tiempo , Vasodilatadores/administración & dosificación , Vasodilatadores/uso terapéutico
19.
Cardiologia ; 44(12): 1065-9, 1999 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-10687257

RESUMEN

BACKGROUND: Trimetazidine has been shown to improve anginal symptoms without altering hemodynamic variables in patients with coronary artery disease. The aim of this study was to compare the effect of trimetazidine and atenolol upon symptoms, resting left ventricular filling dynamics and exercise tolerance. METHODS: Sixteen patients (3 males, 13 females, mean age 62 +/- 7 years) were randomized to receive trimetazidine for 2 weeks (20 mg 3 times daily) or atenolol (100 mg daily), according to a double-blind, randomized, cross-over, placebo-controlled design. At the end of each treatment period patients underwent symptom-limited exercise testing, an echocardiogram and a Doppler assessment of transmitral flow pattern. Daily life anginal symptoms were annotated on a diary throughout the study. Two patients discontinued trimetazidine because of severe palpitations and only 14 patients completed the study. RESULTS: Atenolol significantly reduced the number of anginal episodes as compared to placebo or trimetazidine (0.44 +/- 0.53, 4.8 +/- 4, 2.9 +/- 4.9, p < 0.01). On atenolol, the exercise test was negative in 8 patients, but none of the patients had a negative test while on trimetazidine. Atenolol increased both time to 1 mm ST segment depression (668 +/- 213 vs 838 +/- 81 s, p < 0.05) and Doppler-derived indices of ventricular filling (E/A ratio 0.87 +/- 0.20 vs 1.21 +/- 0.26, p < 0.05). CONCLUSIONS: These results confirm the beneficial effects of atenolol in improving symptoms, exercise performance and diastolic function in syndrome X patients. Trimetazidine did not exert any significant effect on any of the analyzed variables. Since trimetazidine has been previously shown to improve myocardial ischemia in patients with overt coronary artery disease to a similar extent of beta-blockers, it is likely that other mechanisms are responsible for angina in patients with syndrome X.


Asunto(s)
Antagonistas Adrenérgicos beta/uso terapéutico , Atenolol/uso terapéutico , Tolerancia al Ejercicio/efectos de los fármacos , Angina Microvascular/tratamiento farmacológico , Trimetazidina/uso terapéutico , Vasodilatadores/uso terapéutico , Anciano , Estudios Cruzados , Diástole/efectos de los fármacos , Método Doble Ciego , Ecocardiografía Doppler/efectos de los fármacos , Ecocardiografía Doppler/métodos , Ecocardiografía Doppler/estadística & datos numéricos , Prueba de Esfuerzo/efectos de los fármacos , Prueba de Esfuerzo/métodos , Prueba de Esfuerzo/estadística & datos numéricos , Femenino , Humanos , Masculino , Angina Microvascular/diagnóstico , Angina Microvascular/fisiopatología , Persona de Mediana Edad , Función Ventricular Izquierda/efectos de los fármacos
20.
Nucl Med Commun ; 19(7): 625-32, 1998 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-9853342

RESUMEN

We studied the relationship between coronary anatomy, perfusion and metabolism in myocardial segments exhibiting transient and persistent perfusion defects on stress/rest 99Tcm-MIBI single photon emission tomography in 35 patients (31 males, 4 females, mean age 56 +/- 7 years) with a previous myocardial infarction. Quantitative coronary angiography and assessment of myocardial perfusion reserve and glucose metabolism were performed within 1 week of one another. Perfusion was assessed by SPET after the intravenous injection of 740 MBq of 99Tcm-MIBI at rest and after exercise. Regional myocardial glucose metabolism was assessed by position emission tomography at rest (200 MBq of 18F-2-deoxyglucose, FDG) after an overnight fast with no glucose loading. All 35 patients exhibited persistent perfusion defects consistent with the clinically identified infarct site, and 27 (77%) also showed various degrees of within-infarct FDG uptake; 11 patients developed exercise-induced transient perfusion defects within, or in the vicinity of, 15 infarct segments and resting FDG uptake was present in 10 of these segments (67%). Five patients also showed exercise-induced transient perfusion defects in nine segments remote from the site of infarct: resting FDG uptake was present in six of these regions (67%). Finally, nine patients had increased glucose uptake in non-infarcted regions not showing transient perfusion defects upon exercise testing and perfused by coronary arteries with only minor irregularities. Our results confirm the presence of viable tissue in a large proportion of infarct sites. Moreover, FDG uptake can be seen in regions perfused by coronary arteries showing minor irregularities, not necessarily resulting in detectable transient perfusion defects on a MIBI stress scan. Since the clinical significance of such findings is not clear, further studies should be conducted to assess the long-term evolution of perfusion, function and metabolism in non-revascularized patients of those remote areas which are apparently normally perfused, but show abnormal fasting FDG uptake after myocardial infarction. Such studies may have important implications for the management of post-infarct patients, as the preservation of coronary vasodilator reserve and myocardial metabolism in remote myocardium may be seen as an additional goal in the treatment of such patients.


Asunto(s)
Glucosa/metabolismo , Corazón/anatomía & histología , Corazón/diagnóstico por imagen , Miocardio/metabolismo , Glucemia/metabolismo , Cateterismo Cardíaco , Circulación Coronaria , Femenino , Fluorodesoxiglucosa F18 , Humanos , Insulina/sangre , Masculino , Persona de Mediana Edad , Perfusión , Radiofármacos , Tomografía Computarizada de Emisión , Tomografía Computarizada de Emisión de Fotón Único
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