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During middle adolescence, elevated stress and a greater presence of psychological disorders have been documented. The research has paid little attention to the regulation of positive affective states. Fredrickson's broaden-and-build theory suggests that cultivating positive emotions helps to build resources that boost well-being. The current research aimed to examine the longitudinal associations between responses to positive affect (emotion-focused positive rumination, self-focused positive rumination, and dampening) and psychological adjustment (self-esteem and life satisfaction) during middle adolescence. A longitudinal study with two waves separated by one year was conducted, assessing 977 adolescents (M = 13.81, SD = 0.79; 51.5% boys) with self-report measures. A cross-lagged panel analysis was performed by including within the same model the relationships between all of the variables in the two assessment points. The results indicated cross-lagged positive relationships of self-focused positive rumination with both self-esteem and life satisfaction, while dampening showed a negative cross-lagged relationship with self-esteem. Moreover, higher self-esteem predicted more emotion-focused positive rumination, and more dampening predicted lower life satisfaction. Thus, the use of adaptive responses to positive affect and a better psychological adjustment were found to be prospectively interrelated at the one-year follow-up during middle adolescence. The discussion argues for the need to implement programmes to promote more adaptive responses to positive affect to enhance psychological adjustment in the adolescent transition to adulthood.
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Adaptación Psicológica , Conducta del Adolescente/psicología , Emociones , Satisfacción Personal , Rumiación Cognitiva , Autoimagen , Adolescente , Femenino , Humanos , Estudios Longitudinales , MasculinoRESUMEN
This study aimed to analyze the prospective associations during adolescence between depressive symptoms and response styles to positive affect and to examine gender differences. A longitudinal study was conducted with three waves separated by 1 year each to assess a non-clinical sample of 622 Spanish adolescents who were 13 and 14 years old (50.2% boys, 49.8% girls). The participants completed self-report measures of depressive symptoms and responses to positive affect (emotion-focused positive rumination, self-focused positive rumination and dampening of positive emotion). The results showed that the increase in depressive symptoms was associated with an increase in dampening and decreases in emotion-focused and self-focused positive rumination. Furthermore, girls presented more depressive symptoms, as well as higher dampening and lower self-focused positive rumination, than boys. The conclusions highlight the need to consider responses to positive affect in explaining gender differences in depressive symptoms during mid-adolescence, as well as in designing prevention programs.
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Afecto , Depresión/psicología , Factores Sexuales , Adolescente , Femenino , Humanos , Estudios Longitudinales , Masculino , Estudios Prospectivos , Autoinforme , España , Factores de TiempoRESUMEN
Feline leukemia virus (FeLV) is still a major cause of morbidity and mortality in domestic cats and some wild cats despite the availability of relatively effective vaccines against the virus. FeLV subgroup A (FeLV-A) is transmitted in natural infections, and FeLV subgroups B, C, and T can evolve directly from FeLV-A by mutation and/or recombination with endogenous retroviruses in domestic cats, resulting in a variety of pathogenic outcomes. The cell surface entry receptor for FeLV-A is a putative thiamine transporter (THTR1). Here, we have addressed whether FeLV-A infection might disrupt thiamine uptake into cells and, because thiamine is an essential nutrient, whether this disruption might have pathological consequences. First, we cloned the cat ortholog of the other of the two known thiamine transporters in mammals, THTR2, and we show that feline THTR1 (feTHTR1) and feTHTR2 both mediate thiamine uptake, but feTHTR2 does not function as a receptor for FeLV-A. We found that feTHTR1 is widely expressed in cat tissues and in cell lines, while expression of feTHTR2 is restricted. Thiamine uptake mediated by feTHTR1 was indeed blocked by FeLV-A infection, and in feline fibroblasts that naturally express feTHTR1 and not feTHTR2, this blockade resulted in a growth arrest at physiological concentrations of extracellular thiamine. The growth arrest was reversed at high extracellular concentrations of thiamine. Our results show that FeLV-A infection can indeed disrupt thiamine uptake with pathological consequences. A prediction of these experiments is that raising the plasma levels of thiamine in FeLV-infected cats may ameliorate the pathogenic effects of infection.
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Proliferación Celular , Virus de la Leucemia Felina/fisiología , Receptores Virales/metabolismo , Tiamina/metabolismo , Animales , Transporte Biológico , Gatos , Línea Celular , Virus de la Leucemia Felina/genética , Proteínas de Transporte de Membrana/metabolismo , Datos de Secuencia Molecular , Receptores Virales/genética , Infecciones por Retroviridae/virología , Infecciones Tumorales por Virus/virología , Proteínas del Envoltorio Viral/genética , Proteínas del Envoltorio Viral/metabolismo , Acoplamiento Viral , Internalización del VirusRESUMEN
This study assessed the association between cadmium exposure and neuropsychological development in children from a region with high industrial and mining activities in southwestern Spain. We conducted a cross-sectional study with 261 children aged 6-9 years between January and March 2012. Cadmium exposure was measured in urine and hair of children, and neuropsychological development was assessed with the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) and with three computerized tests from the Behavioral Assessment and Research System (BARS): Reaction Time Test (RTT), Continuous Performance Test (CPT) and Selective Attention Test (SAT). Multivariate linear regression models, adjusted for potential confounders, were used to estimate the association between neuropsychological development and cadmium exposure measured in urine and hair samples. Geometric means of urine and hair cadmium levels were 0.75 µg/g creatinine and 0.01 µg/g, respectively. We observed that doubling of levels of cadmium in urine was associated with a reduction of two points (95% CI: -3.8 to -0.4) in the Full-Scale intelligence quotient (IQ) in boys. By domains, association was statistically significant for Verbal Comprehension (ß=-2.0; p=0.04) and close to the significance level for Perceptual Reasoning (ß=-1.8; p=0.06). Among girls, only Verbal Comprehension showed suggestive associations with cadmium exposure (ß=-1.7; p=0.06). Cadmium exposure is associated with cognitive delays in boys in our region. Our results provide additional evidence of the neurotoxic effect of low-level postnatal cadmium exposure among children, and support the hypothesis of differences between sexes in the neurotoxic effect of metals on children.
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Cadmio/toxicidad , Desarrollo Infantil/efectos de los fármacos , Exposición a Riesgos Ambientales , Inteligencia/efectos de los fármacos , Cadmio/análisis , Cadmio/orina , Niño , Femenino , Cabello/química , Humanos , Masculino , Pruebas Neuropsicológicas , España , Espectrofotometría AtómicaRESUMEN
Xenotropic murine leukemia virus-related virus (XMRV) was first identified in human prostate cancer tissue and was later found in a high percentage of humans with chronic fatigue syndrome (CFS). While exploring potential disease mechanisms, we found that XMRV infection induced apoptosis in SY5Y human neuroblastoma cells, suggesting a mechanism for the neuromuscular pathology seen in CFS. Several lines of evidence show that the cell entry receptor for XMRV, Xpr1, mediates this effect, and chemical cross-linking studies show that Xpr1 is associated with the Gß subunit of the G-protein heterotrimer. The activation of adenylate cyclase rescued the cells from XMRV toxicity, indicating that toxicity resulted from reduced G-protein-mediated cyclic AMP (cAMP) signaling. Some proteins with similarity to Xpr1 are involved in phosphate uptake into cells, but we found no role of Xpr1 in phosphate uptake or its regulation. Our results indicate that Xpr1 is a novel, atypical G-protein-coupled receptor (GPCR) and that xenotropic or polytropic retrovirus binding can disrupt the cAMP-mediated signaling function of Xpr1, leading to the apoptosis of infected cells. We show that this pathway is also responsible for the classic toxicity of the polytropic mink cell focus-forming (MCF) retrovirus in mink cells. Although it now seems clear that the detection of XMRV in humans was the result of sample contamination with a recombinant mouse virus, our findings may have relevance to neurologic disease induced by MCF retroviruses in mice.
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Receptores Acoplados a Proteínas G/fisiología , Receptores Virales/fisiología , Virus Relacionado con el Virus Xenotrópico de la Leucemia Murina/patogenicidad , Animales , Línea Celular , Humanos , Inmunoprecipitación , Ratones , Sistema Nervioso/virología , Virulencia , Receptor de Retrovirus Xenotrópico y PolitrópicoRESUMEN
Xenotropic murine leukemia virus-related virus (XMRV) is a gammaretrovirus found in association with human prostate cancer and chronic fatigue syndrome, although these associations are controversial. XMRV shows at most 94% identity to known mouse retroviruses. Here we used XMRV-specific PCR to search for a more closely related source of XMRV in mice. While we could not find a complete copy, we did find a 3,600-bp region of XMRV in an endogenous retrovirus present in NIH/3T3 cells. These results show that XMRV has clear ancestors in mice and highlight another possible source of contamination in PCR assays for XMRV.
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ADN Viral/genética , Retrovirus Endógenos/genética , Genoma Viral , Virus Relacionado con el Virus Xenotrópico de la Leucemia Murina/genética , Animales , Línea Celular , Análisis por Conglomerados , ADN Viral/química , Ratones , Datos de Secuencia Molecular , Filogenia , Reacción en Cadena de la Polimerasa , Análisis de Secuencia de ADN , Homología de Secuencia de Ácido NucleicoRESUMEN
During the COVID-19 pandemic, the use of Internet in the adolescent population has increased. A growing research interest has been developed about the consequences of Internet use for adolescent development. Despite most studies have examined the impact of Internet use on some indicators of psychological maladjustment, few studies have addressed the detrimental impact on the positive indicators of mental health. Positive youth development (PYD) represents a positive view of adolescent transition to adulthood which focuses on building the strengths that make young people more resistant to negative outcomes and more capable to choose a positive life direction. This study aimed to analyze the relationships between different aspects of Internet use and overall PYD in a sample of Spanish adolescents. To reach this aim, a sample of 1,038 adolescents (50.1% boys, M age = 14.19, SD = 1.38), enrolled in 14 high schools in the city of Huelva (Spain), filled in some self-report measures of PYD and Internet use and experience, such as the frequency of Internet use on weekdays or weekends, the different uses of Internet (i.e., social networks, playing online, reading, surfing or looking for information, playing or downloading music, and searching, selling, or buying products), and the subjective experience using the Internet (i.e., acknowledgment of spending too much time playing or in the networks, and being in a bad mood if they do not play or use the networks). Results of a hierarchical regression analysis showed that the more hours using Internet on weekdays, the less PYD. Moreover, the experience of feeling bad when not using the networks and spending too much time with online playing was related to lower PYD. However, the use of Internet for reading or looking for information had a positive association with PYD. These results suggest some implications for practice, such as the need to promote an adaptive Internet use, by providing a safe online context that encourages the acquisition of positive social values and life skills.
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Pregnant women must maintain or acquire healthy habits during pregnancy to protect both their own health and their child's. Such habits include an adequate eating pattern along with good adherence to the intake of certain supplements, practice of moderate physical activity and avoiding the consumption of toxic products such as tobacco and alcohol. The objective of this study is to assess the interrelation between such habits and their association with sociodemographic variables. To such end, a cross-sectional study was conducted with a representative sample of pregnant women who attended the scheduled morphology echography consultation at the 20th gestational week in their reference public hospital in the city of Seville (Spain). Results: Younger pregnant women and with lower educational levels are the ones that present the worst eating habits and the highest smoking rate. Pregnant women with lower educational levels are the least active. Non-smoking pregnant women present better eating habits than those who smoke. Pregnant women with lower educational levels are those who accumulate more unhealthy habits during pregnancy. This should be taken into account when planning the health care provided to pregnant women and in public health intersectoral policies.
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Consumo de Bebidas Alcohólicas , Ejercicio Físico , Conducta Alimentaria , Mujeres Embarazadas , Uso de Tabaco , Estudios Transversales , Femenino , Humanos , Embarazo , Mujeres Embarazadas/psicología , Factores SociodemográficosRESUMEN
The human retrovirus XMRV (xenotropic murine leukemia virus-related virus) is associated with prostate cancer, but a causal relationship has not been established. Here, we have used cultured fibroblast and epithelial cell lines to test the hypothesis that XMRV might have direct transforming activity but found only rare transformation events, suggestive of indirect transformation, even when the target cells expressed the human Xpr1 cell entry receptor for XMRV. Characterization of cells from three transformed foci showed that all were infected with and produced XMRV, and one produced a highly active transforming virus, presumably generated by recombination between XMRV and host cell nucleic acids. Given the sequence similarity of XMRV to mink cell focus-forming (MCF) viruses and the enhanced leukemogenic activity of the latter, we tested XMRV for related MCF-like cytopathic activities in cultured mink cells but found none. These results indicate that XMRV has no direct transforming activity but can activate endogenous oncogenes, resulting in cell transformation. As part of these experiments, we show that XMRV can infect and be produced at a high titer from human HT-1080 fibrosarcoma cells that express TRIM5alpha (Ref1), showing that XMRV is resistant to TRIM5alpha restriction. In addition, XMRV poorly infects NIH 3T3 cells expressing human Xpr1 but relatively efficiently infects BALB 3T3 cells expressing human Xpr1, showing that XMRV is a B-tropic virus and that its infectivity is regulated by the Fv1 mouse locus.
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Neoplasias de la Próstata/virología , Retroviridae/patogenicidad , Animales , Factores de Restricción Antivirales , Proteínas Portadoras/genética , Proteínas Portadoras/fisiología , Línea Celular , Línea Celular Tumoral , Transformación Celular Neoplásica , Transformación Celular Viral , Efecto Citopatogénico Viral , Perros , Humanos , Virus de la Leucemia Murina/patogenicidad , Masculino , Ratones , Virus Inductores de Focos en Células del Visón/patogenicidad , Células 3T3 NIH , Neoplasias de la Próstata/genética , Neoplasias de la Próstata/fisiopatología , Ratas , Receptores Acoplados a Proteínas G/genética , Receptores Acoplados a Proteínas G/fisiología , Receptores Virales/genética , Receptores Virales/fisiología , Proteínas Recombinantes/genética , Proteínas Recombinantes/metabolismo , Especificidad de la Especie , Proteínas de Motivos Tripartitos , Ubiquitina-Proteína Ligasas , Receptor de Retrovirus Xenotrópico y PolitrópicoRESUMEN
Declining oxygen is one of the most drastic changes in the ocean, and this trend is expected to worsen under future climate change scenarios. Spatial variability in dissolved oxygen dynamics and hypoxia exposures can drive differences in vulnerabilities of coastal ecosystems and resources, but documentation of variability at regional scales is rare in open-coast systems. Using a regional collaborative network of dissolved oxygen and temperature sensors maintained by scientists and fishing cooperatives from California, USA, and Baja California, Mexico, we characterize spatial and temporal variability in dissolved oxygen and seawater temperature dynamics in kelp forest ecosystems across 13° of latitude in the productive California Current upwelling system. We find distinct latitudinal patterns of hypoxia exposure and evidence for upwelling and respiration as regional drivers of oxygen dynamics, as well as more localized effects. This regional and small-scale spatial variability in dissolved oxygen dynamics supports the use of adaptive management at local scales, and highlights the value of collaborative, large-scale coastal monitoring networks for informing effective adaptation strategies for coastal communities and fisheries in a changing climate.
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BACKGROUND: Prenatal alcohol exposure can produce serious changes in neurodevelopment that last a lifetime, as well as a wide range of congenital abnormalities, and is the main non-hereditary, avoidable cause of intellectual disability in developed countries. It is therefore crucial to understand the determinants of alcohol consumption during pregnancy. This study is aimed at determining the factors that predict it, as well as the interactions between them. METHODS: A cross-sectional study was carried out using a random sample of 426 pregnant women being treated at the outpatient clinic of a public university hospital in Seville (Spain), when they were in their twentieth week of pregnancy. A custom-designed questionnaire was used for data collection and applied in the course of an interview administered by trained health professionals. The data collected were analyzed using hierarchical regression, moderation analysis, and a structural equations model. RESULTS: Alcohol consumption prior to pregnancy proved to be the most powerful predictor of alcohol intake during pregnancy. Other particularly significant predictors were the percentage of professionals who gave correct advice to the expectant mother-not to consume any alcohol during pregnancy-and perception of the risk from drinking wine during pregnancy. The number of pregnancies correlates positively with alcohol intake during pregnancy, while the expectant mother's level of education correlates negatively. CONCLUSIONS: Identifying these predictive factors will allow the design of more effective fetal alcohol spectrum disorder (FASD) prevention strategies.
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Consumo de Bebidas Alcohólicas , Trastornos del Espectro Alcohólico Fetal , Embarazo , Efectos Tardíos de la Exposición Prenatal , Adulto , Estudios Transversales , Femenino , Humanos , Embarazo/psicología , EspañaRESUMEN
OBJECTIVE: To analyse to what extent pregnant women remembered having received health advice regarding alcohol consumption during pregnancy, what the message they perceived was and whether there is social inequality in this regard. METHOD: A cross-sectional descriptive study was performed with a sample of 426 pregnant women (in their 20th week of pregnancy) receiving care in the outpatient clinics of a university hospital in a southern Spanish city (Seville). The data were collected through face-to-face structured interviews carried out by trained health professionals. RESULTS: 43% of the interviewed women stated that they had not received any health advice in this regard. Only 43.5% of the sample remembered having received the correct message (not to consume any alcohol at all during pregnancy) from their midwife, 25% from their obstetrician and 20.3% from their general practitioner. The women with a low educational level were those who least declared having received health advice on the issue. CONCLUSION: The recommended health advice to avoid alcohol consumption during pregnancy does not effectively reach a large proportion of pregnant women. Developing institutional programmes which help healthcare professionals to carry out effective preventive activities of foetal alcohol spectrum disorder is needed.
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Trastornos del Espectro Alcohólico Fetal , Mujeres Embarazadas , Consumo de Bebidas Alcohólicas/epidemiología , Consumo de Bebidas Alcohólicas/prevención & control , Estudios Transversales , Femenino , Trastornos del Espectro Alcohólico Fetal/epidemiología , Trastornos del Espectro Alcohólico Fetal/prevención & control , Humanos , Embarazo , EspañaRESUMEN
Sport participation has been advocated as a strategy to improve adolescents' mental health. However, how these variables evolve during the adolescent years is uncertain. The objective of the present work was to examine the longitudinal associations of sports participation and depressive symptoms in adolescents. Participants were 525 Spanish adolescents (50.3% boys), aged between 12 and 15 years old (M = 13.45, SD = 0.69). They were enrolled in 18 secondary schools located in Andalusia (Spain) in the first two academic years of Compulsory Secondary Education. Data were collected in three waves, separated by one year, by administering self-report measures of depressive symptoms and sport participation. Repeated measures analyses of variance were conducted to examine the change in depressive symptoms and sport participation, and a latent growth curve model was tested to examine the change in depressive symptoms controlling initial sport participation and gender. At each wave, more frequent sport participation was related to lower depressive symptoms. Two years after the first assessment, adolescents became more depressed but not more active. Less active adolescents had more depressive symptoms in each assessment time. At all moments of assessment, girls were less active and reported more depressive symptoms. Moreover, girls had a higher increase in depressive symptoms than boys. Promotion of physical activity (PA) as a mental health strategy needs to consider gender differences as boys and girls have different patterns of presentation of depressive symptoms throughout adolescence.
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Depresión , Deportes , Adolescente , Niño , Depresión/epidemiología , Ejercicio Físico , Femenino , Estudios de Seguimiento , Humanos , Estudios Longitudinales , Masculino , España/epidemiologíaRESUMEN
There is ample evidence of the teratogenic effects of prenatal alcohol exposure, with long-term consequences throughout the entire life cycle. Nevertheless, research on risk perception of alcohol consumption among pregnant women is scarce. In order to analyze risk perception of alcohol consumption during pregnancy, a cross-sectional study was conducted with a random sample of 426 pregnant women (in their 20th week of gestation) receiving care at the outpatient clinics of a public university hospital in the southern European city of Seville (Spain). Data were collected through structured face-to-face interviews conducted by trained health professionals using a customized questionnaire. Data analysis included structural equation modeling. Only 48.1% of the sample indicated that the sequelae from alcohol consumption during pregnancy were life-long. The structural equation model showed that a lower risk perception about beer and wine consumption, and a lower educational level, were related to more frequent alcohol consumption. Younger participants showed lower risk perception concerning beer consumption. Higher levels of education were related to a greater risk perception of beer. Healthcare institutions should articulate programs that facilitate health advice regarding alcohol consumption during pregnancy, particularly when providing care for women with low educational levels.
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Adamantinomas are rare, low-grade malignant intra-osseous tumors composed of epithelial and mesenchymal elements, which show a marked predilection for the tibia and fibula of young adult male patients. Although cases of adamantinoma located to the axial skeleton have been reported either as recurrent or metastatic disease, only two cases of primary adamantinoma located to the thoracic wall have been previously described. In this study we present the clinical, radiological and histopathological features of a 24-year-old male with a slow growing, solid-cystic, painful mass, located to the right 11th rib, which was morphological and immunohistochemically diagnosed as a primary classic adamantinoma. Radiological studies showed a multiloculated lesion with a solid component. The patient underwent a whole surgical resection of the lesion. Histologically, multiple foci of epithelial cells with basaloid and squamous components were found intermixed within a fibrous stromal tissue. Immunohistochemical analysis demonstrated expression of cytokeratins, EMA, vimentin and other epithelial markers. Primary affection of the rib is an unusual feature of classic adamantinomas.
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Adamantinoma/patología , Costillas/patología , Adamantinoma/metabolismo , Adamantinoma/cirugía , Humanos , Inmunohistoquímica , Masculino , Costillas/metabolismo , Costillas/cirugía , Adulto JovenRESUMEN
Introduction and aim : The examination of trait emotional intelligence as an important component of adolescent psychological adjustment and coping has received a great deal of attention. Trait emotional intelligence is expected to reduce the vulnerability to emotional problems by reducing mood deterioration in adverse situations. Most research to date has addressed the regulation of negative affective states, with less attention paid to the responses to positive affect. Thus, the aim of this research was to examine the cross-sectional and prospective associations between trait emotional intelligence dimensions (i.e., trait emotional attention, trait emotional clarity, and trait emotional repair), response styles to negative affect (i.e., depressive rumination and distraction) and response to positive affect (i.e., emotion-focused and self-focused positive rumination and dampening) in adolescence. Methods: A 1-year follow-up study was conducted with a sample of 880 adolescents (52.4% girls) aged 14-17 years old (M = 14.74, SD = 0.68) who were enrolled in 18 high schools in Andalusia (Spain). Participants completed self-report measures of trait emotional intelligence, response to negative affect and response styles to positive affect. To analyse the data, hierarchical regression analyses and path analysis were performed. Results: Our results showed that high trait emotional attention was cross-sectionally and longitudinally associated with more dampening of positive affect and more depressive rumination. Furthermore, high trait emotional repair was cross-sectionally and longitudinally related to more distraction to negative affect and more self-focused positive rumination. Some gender differences were also found; girls reported higher trait emotional attention, higher dampening, and higher depressive rumination. Furthermore, boys reported higher trait emotional repair, higher self-focused positive rumination and higher distraction to negative affect. Conclusions and discussion: Our findings provide longitudinal evidence of the relationships between trait emotional intelligence and responses to both positive and negative affect during adolescence. Consequently, interventions designed to promote resilience during adolescence could target the development of more adaptive responses to both negative and positive affect within the framework of school-based emotional education programmes.
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This paper aims to describe the prevalence of tobacco consumption among pre-adolescent and adolescent school children in Spain at the start of the 21st century. The data were collected within the framework of the "Estilos de Vida de los Adolescentes Escolarizados" (EVAE) project, a nationwide cross-sectional study on the lifestyles of adolescent school children. In this study, a random sample of 8429 students aged from 10 to 18 years old (49.9% boys and 50.1% girls) was selected. The school children filled in an anonymous questionnaire in their classrooms. Among the 12-year-old age group, there are a significantly higher number of boys than girls who have ever smoked tobacco. Figures are higher for girls in the 14-year-old or older age groups. Between the 12 and the 14-year-old age groups, there is an increase of 40 percentage points for girls who have ever smoked tobacco. The prevalence of daily smoking exceeds 10% among the 14-year-old or older age groups, with significantly higher rates for girls than for boys among the 15-year-old group and older students. Among the 17-year-old group, 25% of boys and 35% of girls report that they smoke daily. The recent experience of Spain and other countries shows that it is possible to significantly reduce the prevalence of tobacco consumption among school children within a few years. The primary prevention of tobacco consumption among adolescents can be highly effective and should constitute a priority for the health system, the education system and other sectors involved.
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Estudiantes/estadística & datos numéricos , Tabaquismo/epidemiología , Adolescente , Niño , Estudios Transversales , Femenino , Humanos , Masculino , Prevalencia , Instituciones Académicas , Distribución por Sexo , España/epidemiologíaRESUMEN
This work pursues two objectives: 1) to analyse time trends in tobacco consumption among Spanish schoolchildren aged 11, 13, 15 and 17 for the period 1986-2002; and 2) to study the evolution of gender differences regarding tobacco consumption in each of these age groups throughout this period. On the basis of a research with a sequential cross-sectional design, data were collected in four nation-wide studies (in 1986, 1990, 1994 and 2002), using representative samples of Spanish schoolchildren. The sub-samples used for this paper add up 14,570 subjects (51.2% girls and 48.8% boys). The analysis of temporal trends has been performed separately for each gender, within each age group. Among 11-year-olds, a growing homogeneity between genders concerning tobacco consumption has been proved, with a general trend to a decrease in the problem. Among 13-year-olds, time trends are very similar to 11-year-olds, except for the period 1994-2002, where there has been an increase in the prevalence of smoking among girls. As for the 15 and 17-year-olds, a growing differentiation between genders has been proved, with a marked rising tendency among girls in all aspects studied. Regarding boys of those ages, the situation is relatively stable since 1990. The spreading of this problem among girls will probably strengthen in the future the current trend toward an increase in tobacco consumption among Spanish adult women.
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Tabaquismo/epidemiología , Adolescente , Niño , Femenino , Humanos , Incidencia , Masculino , Prevalencia , Distribución por Sexo , España/epidemiologíaRESUMEN
Over the last few decades there has been an increased concern about the health risks from exposure to metallic trace elements, including arsenic, because of their potential neurotoxic effects on the developing brain. This study assessed whether urinary arsenic (UA) levels are associated with attention performance and Attention-Deficit/Hyperactivity Disorder (ADHD) in children living in an area with high industrial and mining activities in Southwestern Spain. A cross-sectional study was conducted on 261 children aged 6-9 years. Arsenic levels were determined in urine samples. Attention was measured by using 4 independent tools: a) tests from the Behavioral Assessment and Research System (BARS) designed to measure attention function: Simple Reaction Time Test (RTT), Continuous Performance Test (CPT) and Selective Attention Test (SAT); b) AULA Test, a virtual reality (VR)-based test that evaluates children's response to several stimuli in an environment simulating a classroom; c) Child Behavior Checklist (CBCL), administered to parents; and d) Teacher's Report Form (TRF), administered to teachers. Multivariate linear and logistic regression models, adjusted for potential confounders, were used to estimate the magnitude of the association between UA levels and attention performance scores. Higher UA levels were associated with an increased latency of response in RTT (ß = 12.3; 95% confidence interval (CI): 3.5-21.1) and SAT (ß = 3.6; 95% CI: .4-6.8) as well as with worse performance on selective and focalized attention in the AULA test (ß for impulsivity = .6; 95% CI: .1-1.1; ß for inattention = .5; 95% CI: .03-1.0). A dose-response relationship was observed between UA levels and inattention and impulsivity scores. In contrast, results from the CBCL and TRF tests failed to show a significant association with UA levels. In conclusion, UA levels were associated with impaired attention/cognitive function, even at levels considered safe. These results provide additional evidence that postnatal arsenic exposure impairs neurological function in children.
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Arsénico/toxicidad , Trastorno por Déficit de Atención con Hiperactividad/inducido químicamente , Atención/efectos de los fármacos , Exposición a Riesgos Ambientales/efectos adversos , Arsénico/orina , Niño , Estudios Transversales , Femenino , Humanos , Conducta Impulsiva/efectos de los fármacos , Masculino , Tiempo de Reacción/efectos de los fármacos , Instituciones AcadémicasRESUMEN
OBJECTIVE: To analyse to what extent pregnant women remembered having received health advice regarding alcohol consumption during pregnancy, what the message they perceived was and whether there is social inequality in this regard. METHOD: A cross-sectional descriptive study was performed with a sample of 426 pregnant women (in their 20th week of pregnancy) receiving care in the outpatient clinics of a university hospital in a southern Spanish city (Seville). The data were collected through face-to-face structured interviews carried out by trained health professionals. RESULTS: 43% of the interviewed women stated that they had not received any health advice in this regard. Only 43.5% of the sample remembered having received the correct message (not to consume any alcohol at all during pregnancy) from their midwife, 25% from their obstetrician and 20.3% from their general practitioner. The women with a low educational level were those who least declared having received health advice on the issue. CONCLUSION: The recommended health advice to avoid alcohol consumption during pregnancy does not effectively reach a large proportion of pregnant women. Developing institutional programmes which help healthcare professionals to carry out effective preventive activities of foetal alcohol spectrum disorder is needed
OBJETIVO: Analizar en qué medida las gestantes recuerdan haber recibido asesoramiento sanitario sobre el consumo de alcohol durante el embarazo, cuál es el mensaje percibido y si existe desigualdad social al respecto. MÉTODO: Se realizó un estudio transversal descriptivo con 426 mujeres en su semana 20 de embarazo en las consultas externas de un hospital universitario de Sevilla (España). Los datos se recopilaron mediante entrevistas estructuradas cara a cara realizadas por profesionales sanitarias entrenadas. RESULTADOS: El 43% de las entrevistadas afirmaron no haber recibido consejo sanitario alguno al respecto. Solo el 43,5% dijeron que habían recibido el mensaje correcto (no beber absolutamente nada de alcohol durante el embarazo) por parte de la matrona, el 25% por el obstetra y el 20,3% por el médico de atención primaria. Las embarazadas con menor nivel educativo fueron las que menos refirieron haber recibido asesoramiento sanitario sobre el tema. CONCLUSIÓN: El consejo sanitario adecuado (evitar todo consumo de alcohol durante el embarazo) no llega de manera efectiva a una amplia proporción de las gestantes. Es necesario desarrollar programas institucionales que posibiliten que los profesionales sanitarios puedan llevar a cabo con eficacia actividades preventivas de los trastornos del espectro alcohólico fetal