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1.
Ann Oncol ; 28(4): 831-835, 2017 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-28327898

RESUMEN

BACKGROUND: Preoperative oral capecitabine plus radiotherapy has been progressively adopted in oncology units to provide more convenient care to patients with rectal cancer, but little is known about adherence to this therapy. PATIENTS AND METHODS: Prospective, multicentre observational study in six hospitals in metropolitan Barcelona (Spain), in patients with stage II and III rectal cancer. Assessment of adherence was based on the medical report in the clinical history, a patient questionnaire and a pill count in the pharmacy service upon finalization of treatment. Patients were considered adherent if they had taken 80%-110% of the prescribed treatment. We evaluated clinical variables, adverse effects, anxiety and depression (using the hospital anxiety depression scale [HADS]), and quality of life (EORTC QLQ-30). We analysed adherence-associated variables using a logistic regression model and concordance between adherence measures by means of the modified Kappa index. RESULTS: We included 119 participants. Adherence measures showed little concordance between the assessment methods used: adherence was 100% according to the clinical history, 83.2% according to self-report and 67.9% according to the pill count. In the multivariable analysis, the most relevant variable associated with non-adherence was anxiety prior to treatment (adjusted odds ratio [ORa] 6.96, 95% confidence interval [CI] 1.48-32.7). We did not observe any relevant association between adherence and clinical variables and baseline quality of life parameters. CONCLUSIONS: Adherence to short-term oral neoadjuvant treatment in rectal cancer may be a clinical problem, and it should be acknowledged and systematically evaluated by clinicians during treatment. The limited concordance between different measures of adherence highlights the challenges in monitoring it and the need to use different approaches to assess its impact in clinical practice.


Asunto(s)
Antimetabolitos Antineoplásicos/uso terapéutico , Capecitabina/uso terapéutico , Cumplimiento de la Medicación/estadística & datos numéricos , Neoplasias del Recto/tratamiento farmacológico , Adulto , Anciano , Quimioterapia Adyuvante/métodos , Quimioterapia Adyuvante/estadística & datos numéricos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Terapia Neoadyuvante , Estadificación de Neoplasias , Estudios Prospectivos , Neoplasias del Recto/diagnóstico , España
2.
Rev Enferm ; 39(4): 42-4, 2016 Apr.
Artículo en Español | MEDLINE | ID: mdl-27349062

RESUMEN

INTRODUCTION: Hydroxyurea (HU) is an antineoplastic drug used in chronic myeloproliferative disorders. In this article we will go into detail about the rare but serious appearance of lower limb ulcers in relation to HU treatment. METHODOLOGY: Two simultaneous cases are presented, both from patients with lower limb torpid lesions unresponsive to conventional treatments. After dismissing other aetiologies, HU was found to be the causal agent in both cases. DISCUSSION: In spite of HU's known correlation to lower limb ulcers, pathogenesis isn't clearly defined. In this article we add two more cases to the existing bibliography, with the goal of both insisting on the importance of integral valuation of patients with ulcers and contemplating dermatologic screening on patients treated with HU. CONCLUSION: HU laden ulcers are usually underdiagnosed. Integral valuation and dermatologic screening on patients are critical.


Asunto(s)
Hidroxiurea/uso terapéutico , Úlcera de la Pierna/tratamiento farmacológico , Anciano , Tobillo , Femenino , Humanos , Masculino
3.
Br J Cancer ; 107(8): 1249-56, 2012 Oct 09.
Artículo en Inglés | MEDLINE | ID: mdl-22955858

RESUMEN

AIMS: To compare different methods in order to assess adherence and persistence with oral endocrine therapy in women diagnosed with breast cancer (BC) in Catalonia. MATERIALS AND METHODS: This study covered all women newly diagnosed with stage I, II or IIIa BC and positive hormone receptors at six hospitals in Catalonia (Spain) in 2004. Adherence was assessed on the basis of physician report and patient self-report using a telephone questionnaire. Persistence was measured by refill prescriptions. We used the Kappa index to compare adherence measures and logistic regression to evaluate adherence-related risk factors. RESULTS: The study covered a total of 692 women. Adherence ranged from 92% (self-report) to 94.7% (physician report), depending on the measure used; persistence was 74.7% at 5 years of follow-up. Low concordance between measures was observed (Kappa range: 0.018-0.267). Patients aged 50-74 years showed higher adherence than those aged <50 years. Adherence was also associated with: adjuvant chemotherapy and sequential hormonal therapy. CONCLUSIONS: Concordance between the different measures was remarkably low, indicating the need for further research. Adherence is an issue in the management of BC patients taking oral drugs, and should be assessed in clinical practice.


Asunto(s)
Antineoplásicos Hormonales/administración & dosificación , Neoplasias de la Mama/tratamiento farmacológico , Prescripciones de Medicamentos/estadística & datos numéricos , Cumplimiento de la Medicación/estadística & datos numéricos , Administración Oral , Anciano , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/patología , Femenino , Humanos , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , Autoinforme , España
4.
Food Sci Technol Int ; 18(2): 129-38, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22414932

RESUMEN

Commercial juices of sweet pomegranates and fresh juices of sour-sweet pomegranates were analysed for organic acids, sugars, antioxidant activity, volatile composition, sensory profile and consumer liking. Organic acids and sugars were analysed by high-performance liquid chromatography, while volatiles were extracted using hydrodistillation and analysed by gas chromatography-mass spectrometry and gas chromatography-flame ionisation detector. Malic acid was predominant in sweet juices while citric acid in sour-sweet samples. Fructose and glucose were found as the predominant sugars in all juices. A total of 18 compounds were found in pomegranate aroma profile, including monoterpenes, aldehydes, alcohols, monoterpenoids and linear hydrocarbons; the most abundant compounds were 3-carene, α-terpinene and α-terpineol. The total concentration of volatiles ranged from 2.0 up to 5.1 mg/L, with commercial samples presenting higher total concentrations due to the presence of peel volatiles. The high potential of sour-sweet pomegranate fruits for the juice industry was supported by (a) the high values of positive attributes, such as colour and fresh pomegranate flavour and (b) the high overall liking of consumers.


Asunto(s)
Bebidas , Industria de Alimentos , Lythraceae , Antioxidantes/química , Análisis de los Alimentos , Lythraceae/química , España , Compuestos Orgánicos Volátiles/química
5.
Front Physiol ; 13: 1032020, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36483295

RESUMEN

The purpose of the study was to describe and compare recovery status after official basketball competition in players who underwent NESA neuromodulation treatment (NNT) in weeks with one or two matches. The recovery parameters of 12 professional male basketball players (mean ± SD, age: 20.6 ± 2.7 yr; height: 197.8 ± 11.7 cm; and body mass: 89.0 ± 21.2 kg) that competed in the LEB Plata (Spanish third division) were monitored 2 days after match-play over 6 weeks, and included: 1) the Hooper Test, which combines four subjective variables (sleep, stress, fatigue and soreness); 2) common biochemical markers (e.g., testosterone, cortisol and ratio T:C); and 3) lowest heart rate [HR], average HR, HR variability, sleep duration, awake time during night and onset latency before asleep). Players that completed NNT presented differences compared to the control group in sleep data. For instance, the lowest HR (p < 0.001), average HR (p < 0.001) and total awake time (p = 0.04) were significantly reduced in the NNT group. On the contrary, the control group presented greater values than the NNT group in the subjective Hooper Test, although only stress presented significant differences (Control 2.5 ± 1.2 vs. NNT cost or 3.2 ± 0.9; p = 0.01). Additionally, there were no significant differences in recovery parameters between weeks with one or two matches. In conclusion, the results suggest that players that underwent NNT tended to improve their sleep quality. Nevertheless, player's values in the biochemical markers and wellness status remained similar in both groups. The fact that no significant differences were found between weeks with one or two matches could help basketball professionals to determine that a congested schedule does not seem to negatively alter recovery status. Clinical Trial Registration: https://clinicaltrials.gov/ct2/show/NCT04939181?term=NCT04939181, NCT04939181.

6.
Br J Cancer ; 105(6): 753-9, 2011 Sep 06.
Artículo en Inglés | MEDLINE | ID: mdl-21829194

RESUMEN

BACKGROUND: The Cancer Fast-track Programme's aim was to reduce the time that elapsed between well-founded suspicion of breast, colorectal and lung cancer and the start of initial treatment in Catalonia (Spain). We sought to analyse its implementation and overall effectiveness. METHODS: A quantitative analysis of the programme was performed using data generated by the hospitals on the basis of seven fast-track monitoring indicators for the period 2006-2009. In addition, we conducted a qualitative study, based on 83 semistructured interviews with primary and specialised health professionals and health administrators, to obtain their perception of the programme's implementation. RESULTS: About half of all new patients with breast, lung or colorectal cancer were diagnosed via the fast track, though the cancer detection rate declined across the period. Mean time from detection of suspected cancer in primary care to start of initial treatment was 32 days for breast, 30 for colorectal and 37 for lung cancer (2009). Professionals associated with the implementation of the programme showed that general practitioners faced with suspicion of cancer had changed their conduct with the aim of preventing lags. Furthermore, hospitals were found to have pursued three specific implementation strategies (top-down, consensus-based and participatory), which made for the cohesion and sustainability of the circuits. CONCLUSION: The programme has contributed to speeding up diagnostic assessment and treatment of patients with suspicion of cancer, and to clarifying the patient pathway between primary and specialised care.


Asunto(s)
Atención a la Salud/métodos , Neoplasias/terapia , Atención Primaria de Salud , Evaluación de Programas y Proyectos de Salud , Especialización , Atención a la Salud/organización & administración , Humanos , Oncología Médica , España , Factores de Tiempo
7.
J Healthc Qual Res ; 36(5): 263-268, 2021.
Artículo en Español | MEDLINE | ID: mdl-34147410

RESUMEN

INTRODUCTION: During the worldwide pandemic of COVID-19 caused by coronavirus SARS-CoV-2, hospitals developed contingency plans that transformed and reorganized the hospital activity. One of the measures was to restrict access to family members of hospitalized patients. The presence of the patient's family is considered an alternative to physical restraint. The aim of this study is to compare the use of physical restraint in hospitalized patients in an acute care hospital during the previous period of the pandemic of COVID-19 with the post-confinement period with hospitals being still closed to family. MATERIAL AND METHODS: We made an observational study that compares the prevalence of physical restraint in an acute care hospital during the previous period to the alarm state (February 2020) with the second period, when visits where restricted (May 2020). From the clinical history of the patients with physical restraint we collected the following variables: sex, diagnostic, hospital admission unit, reason for using physical restraint, localization, length, type of material, registration in the medical record, information given to the family, alternatives to the physical restraint and injuries related to the physical restraint. RESULTS: We evaluated 690 patients: 388 during the previous period and 320 during the second period. From all patients, 29 needed physical restraint. The use of physical restraint went from 8 (2%) to 21 (7%) (p=0.003). In the second period, a not statistically significant increase in continuous physical restraint was identified compared to the first period. CONCLUSIONS: The physical restraint prevalence has been superior during the second period in which families were not present with the hospitalized patients.


Asunto(s)
COVID-19/terapia , Familia , Restricción Física/estadística & datos numéricos , Visitas a Pacientes , Enfermedad Aguda , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Hospitales , Humanos , Masculino , Persona de Mediana Edad
8.
Chemosphere ; 256: 127107, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32445992

RESUMEN

The massive use of petroleum-based polymers and their improper waste treatment has brought on significant global environmental problems due to their non-biodegradable nature. Starch/poly(vinyl alcohol) (PVA) bioplastics are suitable substitutes for conventional polymers, such as polyethylene, due to their full biodegradability and excellent mechanical properties. Knowledge of the pollutant emissions during pyrolysis and combustion of starch/PVA films is important because they can arrive at landfills mixed with conventional polymers and be thermally degraded in uncontrolled fires. On the other hand, controlled thermal treatments could result in thermal valorization of the waste. Pyrolysis and combustion experiments were carried out at 650, 750, 850 and 950 °C in a laboratory furnace. The analysis of carbon oxides, light hydrocarbons, and semivolatile compounds, including polycyclic aromatic hydrocarbons (PAHs), is shown. Experiments showed lower pollutant emissions than those found with conventional polymers, such as polyethylene and polyester, in the same equipment. Nevertheless, the pyrolysis run at 950 °C showed the highest light hydrocarbon yield (123013 mg kg-1), but this is considerably lower than the values found for polyethylene. The main semivolatile compounds (not PAHs) emitted, with maximum yields ranging from 1351 to 4694 mg kg-1, were benzaldehyde, phenol, indene, and acetophenone. Specifically, the total semivolatile compounds emitted after pyrolysis and combustion of starch/PVA samples represent only 38 and 50%, respectively, of those emitted with polyethylene. Further, the main PAHs were naphthalene, acenaphthylene, and phenanthrene with maximum values of 4694, 2704 and 1496 mg kg-1, respectively. The PAH yield was considerably higher in experiments with low oxygen content.


Asunto(s)
Contaminantes Atmosféricos/química , Incineración , Alcohol Polivinílico/química , Contaminantes Atmosféricos/análisis , Carbono/análisis , Etanol/análisis , Hidrocarburos Policíclicos Aromáticos/análisis , Cloruro de Polivinilo/análisis , Pirólisis , Almidón/análisis
9.
J Cell Biol ; 119(6): 1681-7, 1992 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-1334963

RESUMEN

We have previously shown that postnatal expression of the viral oncoprotein SV40 T antigen in rod photoreceptors (transgene MOT1), at a time when retinal cells have withdrawn from the mitotic cycle, leads to photoreceptor cell death (Al-Ubaidi et al., 1992. Proc. Natl. Acad. Sci. USA. 89:1194-1198). To study the effect of the specificity of the promoter, we replaced the mouse opsin promoter in MOT1 by a 1.3-kb promoter fragment of the human IRBP gene which is expressed in both rod and cone photoreceptors during embryonic development. The resulting construct, termed HIT1, was injected into mouse embryos and five transgenic mice lines were established. Mice heterozygous for HIT1 exhibited early bilateral retinal and brain tumors with varying degrees of incidence. Histopathological examination of the brain and eyes of three of the families showed typical primitive neuroectodermal tumors. In some of the bilateral retinal tumors, peculiar rosettes were observed, which were different from the Flexner-Wintersteiner rosettes typically associated with human retinoblastomas. The ocular and cerebral tumors, however, contained Homer-Wright rosettes, and showed varying degrees of immunoreactivity to antibodies against the neuronal specific antigens, synaptophysin and Leu7, but not to antibodies against photoreceptor specific proteins. Taken together, the results indicate that the specificity of the promoter used for T antigen and/or the time of onset of transgene expression determines the fate of photoreceptor cells expressing T antigen.


Asunto(s)
Antígenos Virales de Tumores/genética , Proteínas del Ojo , Regulación Neoplásica de la Expresión Génica , Regiones Promotoras Genéticas/genética , Proteínas de Unión al Retinol/genética , Virus 40 de los Simios/genética , Animales , Antígenos de Diferenciación/análisis , Secuencia de Bases , Encéfalo/patología , Neoplasias Encefálicas/etiología , Neoplasias Encefálicas/patología , Neoplasias del Ojo/etiología , Neoplasias del Ojo/patología , Humanos , Inmunohistoquímica , Ratones , Ratones Transgénicos/embriología , Datos de Secuencia Molecular , Retina/patología , Distribución Tisular
10.
Int J Oral Maxillofac Surg ; 38(1): 31-9, 2009 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-18951763

RESUMEN

The authors carried out a hospital-based prospective study to evaluate the role of behavioral and clinical risk factors, occurring before and after diagnosis, on the prognosis of 146 patients with newly diagnosed oral cancer using Cox models. High weekly intake of vegetables before and after diagnosis were both associated with lower recurrence rates, longer overall survival and longer oral cancer survival. Diagnostic delay was associated with an increased risk of recurrence and oral cancer mortality. Patients presenting with pharyngeal pain or a mucosal lesion had a longer oral cancer survival than patients presenting with other symptoms. Quitting tobacco and alcohol consumption before and after diagnosis were both associated with a lower recurrence and/or better survival, but the effects were not statistically significant. This study suggests that high consumption of vegetables before and after diagnosis of oral cancer may reduce the risk of recurrence, overall mortality and cancer mortality in oral cancer patients.


Asunto(s)
Dieta , Frutas , Neoplasias de la Boca/mortalidad , Recurrencia Local de Neoplasia/prevención & control , Verduras , Anciano , Consumo de Bebidas Alcohólicas , Detección Precoz del Cáncer , Femenino , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Neoplasias de la Boca/diagnóstico , Neoplasias de la Boca/radioterapia , Neoplasias de la Boca/cirugía , Pronóstico , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Factores de Riesgo , Cese del Hábito de Fumar , España , Encuestas y Cuestionarios
11.
Nefrologia ; 29(3): 228-35, 2009.
Artículo en Español | MEDLINE | ID: mdl-19554056

RESUMEN

UNLABELLED: Cystatin C is a marker of renal function and a major cardiovascular risk factor. In the general population, cystatin C appears to be influenced by factors other than renal function alone. However, information for serum cystatin C levels in chronic kidney disease (CKD) is lacking. METHODS: We studied 52 nondiabetic patients (38 men, mean age 49 years) with CKD stage 3 (22), 4 (25) or 5 (5) who had measurements of serum cystatin C levels, estimated glomerular filtration rate (MDRD), inflammatory (C-reactive protein, interleukin-6 and fibrinogen), and oxidative markers (anti-oxidized LDL antibodies, serum paraoxonase-1 activity and concentration), left ventricular mass index by echocardiography and other cardiovascular risk factors. RESULTS: Mean cystatin C levels were 2.35 +/- 0.9 mg/l. Cystatin C was positively correlated with creatinine serum levels, estimated glomerular filtration rate, PTH levels and negatively with anti-oxidized LDL antibodies. On the other hand, cystatin C was not related to inflammatory markers, serum paraoxonase-1 activity and concentration, proteinuria, HDL or LDL cholesterol, serum triglycerides, left ventricular mass index or demographic factors such as age, body mass index and blood pressure. After adjustment for PTH levels and anti- oxidized LDL antibodies, only estimated glomerular filtration rate was independently related serum cystatin C levels (beta = -0.500, p = 0.001). CONCLUSION: In nondiabetic patients with CKD, cystatin C is closely related to the degree of renal dysfunction. In contrast, inflammatory state, oxidative stress, left ventricular mass index and other cardiovascular risk factors are not related to cystatin C levels in this population.


Asunto(s)
Enfermedades Cardiovasculares/etiología , Cistatina C/sangre , Inflamación/etiología , Enfermedades Renales/complicaciones , Enfermedades Renales/metabolismo , Estrés Oxidativo , Adulto , Enfermedades Cardiovasculares/epidemiología , Enfermedad Crónica , Estudios Transversales , Femenino , Humanos , Enfermedades Renales/sangre , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Factores de Riesgo
12.
J Clin Invest ; 85(6): 1872-8, 1990 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-2161431

RESUMEN

Retinoblastoma is a malignant intraocular tumor that primarily affects small children. These tumors are primitive neuroectodermal malignancies, however some of them show morphologic evidence of differentiation into photoreceptors. Phototransduction cascades are a series of biochemical reactions that convert a photon of light into a neural impulse in rods and cones. The components of these cascades are uniquely expressed in photoreceptors and, although functionally similar, distinct components of these cascades are expressed in rods and cones. Using HPLC anion exchange chromatography, Western blot analysis, and specific monoclonal and polyclonal antibodies, we found that the cone but not the rod cGMP phosphodiesterase is functionally expressed in all six primary retinoblastomas examined and in three continuous retinoblastoma cell lines. Morphologic evidence of differentiation did not correlate with the expression of the enzyme. Furthermore, GTP analogues could activate the phosphodiesterase activity suggesting that an intact phototransduction cascade is present in the tumors. The presence of the cone phototransduction cascade in retinoblastoma confirms that this tumor has biochemically differentiated along the cone cell lineage.


Asunto(s)
Células Fotorreceptoras/fisiología , Retinoblastoma/fisiopatología , 3',5'-GMP Cíclico Fosfodiesterasas/fisiología , Western Blotting , Calmodulina/fisiología , Diferenciación Celular , Activación Enzimática , Proteínas de Unión al GTP/fisiología , Humanos , Peso Molecular , Células Fotorreceptoras/citología , Retina/enzimología , Retinoblastoma/patología , Visión Ocular
13.
Cir. Esp. (Ed. impr.) ; 100(9): 562-568, sept. 2022. ilus, tab
Artículo en Español | IBECS (España) | ID: ibc-208257

RESUMEN

Objetivo El objetivo de este estudio es analizar el impacto de los congresos del American College of Surgeons Clinical Congress (ACSCC2020) y del Congreso Nacional de Cirugía de la Asociación Española de Cirujanos (CNC2020) en formato virtual por la pandemia SARS-CoV-2 según la huella digital. Material y métodos Se estudiaron los hashtags de Twitter #ACSCC20 y #CNCirugia2020 para determinar tuits, retuits, usuarios e impresiones. Se analizaron los datos sobre las cuentas con mayor influencia y la evolución histórica de los congresos entre 2015 y 2020. Utilizamos el software symplur para la recogida y análisis de los datos. Resultados Entre 2015 y 2017 hubo un incremento consistente en el número de tuits, participantes e impresiones. Entre 2018 y 2020, el ACS mantiene el número de impresiones con menor cantidad de tuits. Sin embargo, el CNC sigue creciendo y logra sus mejores métricas en el presente 2020. Encontramos diferencias estadísticamente significativas entre las cuentas más prolíficas del ACSCC frente al CNC (p<0,002), pero no existen diferencias entre las 10 cuentas más influyentes (p=0,19) o las cuentas con mayor número de impresiones (p=0,450). Conclusiones Los congresos virtuales generan un impacto global a través del uso de Twitter para la diseminación de conocimiento. En el presente 2020 el crecimiento del impacto en redes sociales ha sido proporcionalmente mayor en el CNC que en el ACSCC. No obstante, el congreso virtual del ACS generó mayor impacto en las redes sociales medido por el número de usuarios, tuits e impresiones entre 2015 y 2020 (AU)


Aim The objective of this study is to analyze the impact of the American College of Surgeons Clinical Congress (ACSCC2020) and the National Surgery Congress of the Spanish Association of Surgeons (CNC2020) in virtual format due to the SARS-CoV-2 pandemic according to the fingerprint.Material and methods The Twitter hashtags # ACSCC20 and # CNCirugia2020 were studied to determine tweets, retweets, users and impressions. The data on the accounts with the greatest influence and the historical evolution of the congresses between 2015 and 2020 were analyzed. We used the symplur software to collect and analyze the data. Results Between 2015 and 2017 there was a consistent increase in the number of tweets, participants and impressions. Between 2018 and 2020, the ACS maintains the number of impressions with the fewest number of tweets. However, the CNC continues to grow and achieves its best metrics in 2020. We found statistically significant differences between the most prolific accounts of the ACSCC versus the CNC (P<.002) but there are no differences between the 10 most influential accounts (P=.19) or the accounts with the highest number of impressions (P=.450). Conclusions Virtual congresses generate a global impact through the use of Twitter for the dissemination of knowledge. In the present 2020, the growth of the impact on social networks has been proportionally greater in the CNC than in the ACSCC. However, the ACS virtual congress generated the greatest impact on social networks measured by the number of users, tweets and impressions between 2015 and 2020 (AU)


Asunto(s)
Humanos , Infecciones por Coronavirus/epidemiología , Neumonía Viral/epidemiología , Pandemias , Congresos como Asunto , Redes Sociales en Línea , Sociedades Médicas , Estados Unidos , España
14.
J Phys Chem B ; 110(11): 5767-72, 2006 Mar 23.
Artículo en Inglés | MEDLINE | ID: mdl-16539523

RESUMEN

The influence of oxidation, protonation, and metal cationization with Cu(+) and Cu(2+) on the strength of the N-glycosidic bond in 2'-deoxyguanosine has been studied by means of quantum chemical calculations. In all cases, the N9-C1' bond distance increases (0.03-0.06 A) upon introducing positive charge in the guanine moiety, the observed variations being more important for the dicationic systems. Binding energies show that the effect of X(n)(+) in guanine hinders the homolytic dissociation, whereas it largely favors the heterolytic process. With respect to the deoxyribose ring, it has been found that metal binding, oxidation, and protonation do not significantly change the values of the phase angle of pseudorotation P. However, the glycosyl torsion angle chi varies considerably (from 242.0 degrees to 189.8 degrees) as a consequence of a stabilizing guanine-sugar (H8-O4') interaction due to the increase of acidity of guanine C8-H8 upon cationization.


Asunto(s)
Desoxiguanosina/química , Glicósidos/química , Iones , Metales/química , Protones , Algoritmos , Sitios de Unión , Desoxiguanosina/metabolismo , Glicósidos/metabolismo , Guanina/química , Modelos Moleculares , Estructura Molecular , Oxidación-Reducción , Teoría Cuántica
15.
Occup Environ Med ; 63(10): 663-8, 2006 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-16757510

RESUMEN

OBJECTIVES: To estimate the risk of lymphoma among farmers in Spain. METHODS: This is a multicentre case control study conducted in Spain. Cases were subjects diagnosed with lymphoma according to the World Health Organization (WHO) classification in four hospitals between 1998-2002. Hospital controls were frequency matched to the cases by sex, age, and centre. All subjects were interviewed about jobs ever held in lifetime for at least one year and the exposures in those jobs were recorded. The risk of lymphomas among subjects ever having had a job as a farmer was compared with all other occupations. Farmers were analysed according to the type of farming job performed: crop farming, animal farming, and general farming. Occupational exposure was summarised into 15 main categories: organic dust, radiation, contact with animals, PAH, non-arsenic pesticides (carbamates, organophosphates, chlorinated hydrocarbons, triazines and triazoles, phenoxy herbicides, chlorophenols, dibenzodioxin, and dibenzofuran), arsenic pesticides, contact with meat, contact with children, solvents, asbestos, soldering fumes, organic colourants, polychlorinated biphenyls, ethylene oxide, and hair dyes. RESULTS: Although farmers were not at an increased risk of lymphoma as compared with all other occupations, farmers exposed to non-arsenic pesticides were found to be at increased risk of lymphoma (OR = 1.8, 95% CI 1.1 to 2). This increased risk was observed among farmers working exclusively either as crop farmers or as animal farmers (OR = 2.8, 95% CI 1.3 to 5.8). Risk was highest for exposure to non-arsenic pesticides for over nine years (OR = 2.4, 95% CI 1.2 to 2.8). CONCLUSIONS: Long term exposure to non-arsenic pesticides may induce lymphomagenesis among farmers.


Asunto(s)
Enfermedades de los Trabajadores Agrícolas/inducido químicamente , Linfoma/inducido químicamente , Exposición Profesional/efectos adversos , Plaguicidas/toxicidad , Adulto , Anciano , Enfermedades de los Trabajadores Agrícolas/epidemiología , Crianza de Animales Domésticos , Estudios de Casos y Controles , Femenino , Humanos , Linfoma/epidemiología , Masculino , Persona de Mediana Edad , Oportunidad Relativa , España/epidemiología
16.
An Pediatr (Barc) ; 64(3): 273-6, 2006 Mar.
Artículo en Español | MEDLINE | ID: mdl-16527097

RESUMEN

BACKGROUND: Congenital pseudarthrosis of the clavicle (CPC) is a rare malformation of the scapular waist of unknown etiology. About 200 cases have been reported. The lesion is usually right-sided and unilateral. Physical examination reveals swelling over the midportion of the clavicle, usually asymptomatic, and the diagnosis is confirmed by plain radiology. The differential diagnosis includes posttraumatic pseudarthrosis, cleidocranial dysostosis and neurofibromatosis. Surgical treatment is indicated in symptomatic patients or those with major deformity. MATERIAL AND METHODS: We performed a retrospective review of the medical records of 9 patients with CPC managed in our hospital. RESULTS: We studied 5 girls and 4 boys with unilateral right CPC. None of them had a familial history of CPC. Four complained of local pain, without functional impairment, and clavicular asymmetry on x-ray ranging from 0.5 to 1 cm, without accompanying pathologic findings. Surgical treatment was performed in 5 patients, with resection of fibrous pseudarthrosis, internal fixation, and iliac bone graft. In 4 patients callus response was achieved at 2 months. The remaining patient required withdrawal of orthopaedic material 2 months after surgery because of its protrusion through the skin, without the need for further surgical treatment to date. CONCLUSIONS: Although rare, CPC should be included in the differential diagnosis of clavicle abnormalities in children. Good results are achieved with current surgical techniques in patients with clear indication.


Asunto(s)
Clavícula/anomalías , Seudoartrosis/congénito , Escápula/anomalías , Preescolar , Diagnóstico Diferencial , Femenino , Humanos , Lactante , Masculino , Anomalías Musculoesqueléticas/diagnóstico , Estudios Retrospectivos
17.
Int J STD AIDS ; 16(11): 727-9, 2005 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-16303065

RESUMEN

We evaluated the detection of human papillomavirus (HPV) infection using two sampling methods of cervical exfoliated cells, consisting of self-sampling of vaginal cells and cervical sampling performed by the physician. Women included were 379 patients of the general population attending outpatient clinics in Northern Greece for routine cytological cervical dysplasia screening. HPV DNA detection was similar with both sampling techniques. The HPV prevalences in self-collected samples were 4.7% and 3.7% in the physician-collected samples (P>0.05). The Kappa statistic for HPV DNA agreement between the two methods was 0.54 (95% Confidence interval = 0.33-0.75). Self-sampling of cervico-vaginal exfoliated cells could be used as an alternative option to test for HPV infection.


Asunto(s)
Papillomaviridae/aislamiento & purificación , Infecciones por Papillomavirus/diagnóstico , Autocuidado/métodos , Manejo de Especímenes/métodos , Cuello del Útero/citología , ADN Viral/análisis , Femenino , Humanos , Papillomaviridae/genética , Infecciones por Papillomavirus/epidemiología , Infecciones por Papillomavirus/virología , Prevalencia , Sensibilidad y Especificidad , Displasia del Cuello del Útero/diagnóstico , Displasia del Cuello del Útero/epidemiología , Displasia del Cuello del Útero/virología , Vagina/citología
18.
Eur Psychiatry ; 30(8): 1028-36, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26521223

RESUMEN

BACKGROUND: The aim of this randomized clinical trial follow-up at three months was to evaluate the effectiveness of an educational intervention with a focus on diet and physical activity (PA) to change the amount of PA, body mass index (BMI) and the waist circumference (WC) in patients with severe mental illness. METHODS: We recruited 332 outpatients with severe mental disorders undergoing treatment with antipsychotic medication from Mental Healthcare Centers of Barcelona. They were randomly assigned to an intervention or a control group. The patients in the intervention group participated in a group PA and diet educational program. The blinded measurements at 0 and 3 months were: the level of PA (IPAQ questionnaire), BMI, WC, blood pressure, dietary habits (PREDIMED questionnaire), quality of life (SF-36 questionnaire) and laboratory parameters (cholesterol, triglycerides, glucose). RESULTS: The average age was 46.7 years and 55% were males. Schizophrenia had been diagnosed in 67.1% of them. At 3 months, the average weekly walking METs rose significantly in the IG 266.05 METs (95%CI: 16.86 to 515.25; P=0.036). The total MET average also rose although not significantly: 191.38 METs (95%CI: 1.38 to 381.38; P=0.086). However, the BMI decreased significantly more in the CG, by 0.26kg/m(2) (95%CI: 0.02 to 0.51; P=0.038), than in the IG. There were no significant differences in the WC. CONCLUSIONS: The short-term results suggest that the intervention increases the level of PA, but does not improve physical or laboratory parameters. TRIAL REGISTRATION: Clinicaltrials.gov NCT01729650 (effectiveness of a physical activity and diet program in patients with psychotic disorder [CAPiCOR]).


Asunto(s)
Antipsicóticos/uso terapéutico , Enfermedades Cardiovasculares , Dietoterapia/métodos , Terapia por Ejercicio/métodos , Trastornos Psicóticos , Calidad de Vida , Adulto , Índice de Masa Corporal , Enfermedades Cardiovasculares/complicaciones , Enfermedades Cardiovasculares/psicología , Enfermedades Cardiovasculares/terapia , Colesterol/sangre , Femenino , Humanos , Masculino , Persona de Mediana Edad , Actividad Motora/fisiología , Trastornos Psicóticos/complicaciones , Trastornos Psicóticos/fisiopatología , Trastornos Psicóticos/terapia , Encuestas y Cuestionarios , Resultado del Tratamiento , Triglicéridos/sangre , Circunferencia de la Cintura
19.
J Neuropathol Exp Neurol ; 39(5): 575-83, 1980 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-6260906

RESUMEN

This is a study on the histochemical and electron microscope findings of the intracellular inclusions in a case of meningothelial meningioma of the frontoethmoidal region with orbital involvement. The inclusions are PAS-positive, diastase resistant, and stain strongly positive with the modified Morel-Sisley reaction for protein-bound tyrosine and weakly with dihydroxy-dinaphthyl-disulfide (DDD) for the demonstration of sulfhydryl (SH) and disulfide (S-S) groups of proteins. These staining reactions suggest the inclusions are composed of conjugated proteins (glycoproteins). Ultrastructurally, the inclusions are located within intracellular spaces lined by microvilli and are composed of granular material, usually forming a dense core that is intermixed with small vacuoles. Numerous desmosomes and whorls of tonofibrils are concentrated around them. Our findings support the view that the intracellular inclusions, which are rarely found in meningiomas, represent an active secretory product of the meningothelial cells rather than a degenerative or phagocytic process.


Asunto(s)
Cuerpos de Inclusión/metabolismo , Neoplasias Meníngeas/ultraestructura , Meningioma/ultraestructura , Femenino , Histocitoquímica , Humanos , Neoplasias Meníngeas/metabolismo , Meningioma/metabolismo , Microscopía Electrónica , Persona de Mediana Edad
20.
Am J Surg Pathol ; 8(2): 129-38, 1984 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-6703189

RESUMEN

This is a report of an unusual case of melanotic schwannoma located in the soft tissue of the shoulder. By light microscopy, the partially pigmented, encapsulated mass showed tumor lobules displaying an organoid pattern and benign cytologic features. By electron microscopy, the tumor cells disclosed numerous interdigitating blunt cytoplasmic processes invested by a thin, continuous basal lamina with formation of mesaxons and moderate amount of glycogen as well as immature and mature melanosomes. The patient was reported to be alive and well 7 years after local excision of the mass. We also reviewed 21 additional cases from the literature. The most frequent sites of involvement were: the spinal nerve roots and adjacent structures (12 cases), soft tissues (five cases), heart (one case), esophageal wall (one case), acoustic nerve (one case), and mandible (one case). Twelve patients were alive and well (follow-up periods ranging from 9 months to 13 years after surgical resection), and one died of surgical complications. Eight patients were lost to follow-up. Three patients had local recurrences due to incomplete excision of the mass. Ten tumors were studied electron microscopically and displayed characteristic features of both Schwann cells and melanocytes. This unique dual differentiation probably reflects their common ancestry from neural crest cells.


Asunto(s)
Melanoma/ultraestructura , Neurilemoma/ultraestructura , Adolescente , Adulto , Niño , Femenino , Estudios de Seguimiento , Humanos , Masculino , Melanocitos/ultraestructura , Melanoma/mortalidad , Microscopía Electrónica , Persona de Mediana Edad , Músculos/ultraestructura , Neurilemoma/mortalidad , Células de Schwann/ultraestructura , Hombro
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