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1.
Eur Addict Res ; 30(2): 65-79, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38423002

RESUMO

INTRODUCTION: Attentional bias (AB) is an implicit selective attention toward processing disorder-significant information while neglecting other environmental cues. Considerable empirical evidence highlights the clinical implication of AB in the onset and maintenance of substance use disorder. An innovative method to explore direct measures of AB relies on the eye-movement activity using technologies like eye-tracking (ET). Despite the growing interest regarding the clinical relevance of AB in the spectrum of alcohol consumption, more research is needed to fully determine the AB patterns and its transfer from experimental to clinical applications. The current study consisted of three consecutive experiments. The first experiment aimed to design an ad-hoc visual attention task (VAT) consisting of alcohol-related and neutral images using a nonclinical sample (n = 15). The objective of the second and third experiments was to analyze whether the effect of type of image (alcohol-related vs. neutral images) on AB toward alcohol content using the VAT developed in the first experiment was different for type of drinker (light vs. heavy drinker in the second experiment [n = 30], and occasional social drinkers versus alcohol use disorder (AUD) patients in the third experiment [n = 48]). METHODS: Areas of interest (AOIs) within each type of image (neutral and alcohol-related) were designed and raw ET-based data were subsequently extracted through specific software analyses. For experiment 1, attention maps were created and processed for each image. For experiments 2 and 3, data on ET variables were gathered and subsequently analyzed through a two-way ANOVA with the aim of examining the effects of the type of image and drinker on eye-movement activity. RESULTS: There was a statistically significant interaction effect between type of image and type of drinker (light vs. heavy drinker in experiment 2, F(1, 56) = 13.578, p < 0.001, partial η2 = 0.195, and occasional social drinker versus AUD patients in the experiment 3, F(1, 92) = 35.806, p < 0.001, partial η2 = 0.280) for "first fixation" with large effect sizes, but not for "number of fixations" and "dwell time." The simple main effect of type of image on mean "first fixation" score for AUD patients was not statistically significant. CONCLUSION: The data derived from the experiments indicated the importance of AB in sub-clinical populations: heavy drinkers displayed an implicit preference for alcohol-related images compared to light drinkers. Nevertheless, AB fluctuations in patients with AUD compared to the control group were found. AUD patients displayed an early interest in alcohol images, followed by an avoidance attentional processing of alcohol-related images. The results are discussed in light of recent literature in the field.


Assuntos
Alcoolismo , Viés de Atenção , Humanos , Consumo de Bebidas Alcoólicas , Movimentos Oculares , Etanol/farmacologia , Sinais (Psicologia)
2.
Ann Neurol ; 86(2): 293-303, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31125140

RESUMO

OBJECTIVE: Thymidine kinase 2, encoded by the nuclear gene TK2, is required for mitochondrial DNA maintenance. Autosomal recessive TK2 mutations cause depletion and multiple deletions of mtDNA that manifest predominantly as a myopathy usually beginning in childhood and progressing relentlessly. We investigated the safety and efficacy of deoxynucleoside monophosphate and deoxynucleoside therapies. METHODS: We administered deoxynucleoside monophosphates and deoxynucleoside to 16 TK2-deficient patients under a compassionate use program. RESULTS: In 5 patients with early onset and severe disease, survival and motor functions were better than historically untreated patients. In 11 childhood and adult onset patients, clinical measures stabilized or improved. Three of 8 patients who were nonambulatory at baseline gained the ability to walk on therapy; 4 of 5 patients who required enteric nutrition were able to discontinue feeding tube use; and 1 of 9 patients who required mechanical ventilation became able to breathe independently. In motor functional scales, improvements were observed in the 6-minute walk test performance in 7 of 8 subjects, Egen Klassifikation in 2 of 3, and North Star Ambulatory Assessment in all 5 tested. Baseline elevated serum growth differentiation factor 15 levels decreased with treatment in all 7 patients tested. A side effect observed in 8 of the 16 patients was dose-dependent diarrhea, which did not require withdrawal of treatment. Among 12 other TK2 patients treated with deoxynucleoside, 2 adults developed elevated liver enzymes that normalized following discontinuation of therapy. INTERPRETATION: This open-label study indicates favorable side effect profiles and clinical efficacy of deoxynucleoside monophosphate and deoxynucleoside therapies for TK2 deficiency. ANN NEUROL 2019;86:293-303.


Assuntos
Ensaios de Uso Compassivo/métodos , Desoxirribonucleosídeos/uso terapêutico , Doenças Musculares/tratamento farmacológico , Doenças Musculares/enzimologia , Timidina Quinase/deficiência , Adulto , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Teste de Caminhada/métodos
3.
Int J Clin Pract ; 72(11): e13253, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30222240

RESUMO

INTRODUCTION: Peripheral arterial disease (PAD) is an underdiagnosed prevalent disease which implies high cardiovascular risk. Professionals usually depend on physical examination to screen for PAD. OBJECTIVE: To assess the diagnostic accuracy of physical examination to screen for PAD in a rural Primary Care population and to evaluate the nurse-physician level of agreement in pedal pulse palpation. METHODS: Diagnostic accuracy study in which two experienced professionals (physician-nurse) prospectively performed pedal pulse palpation (grading as absent, reduced, normal, or bounding), femoral bruit auscultation and calf circumference (index tests) comparing with Doppler ABI (reference test, positive cut-off: 0.9 ≥ ABI ≥ 1.4) in 158 consecutive subjects. INCLUSION CRITERIA: presence of diabetes, dyslipidaemia, hypertension, smoking habit (current or former), or age ≥ 65. RESULTS: Of 315 legs included, PAD was confirmed in 38 (12.1%) legs. Absent dorsalis pedis (DP) and posterior tibial (PT) pulses were found in 37 (11.7%) and 67 (21.3%) legs, respectively. Regarding nurse evaluation, when a positive test was set if DP or PT were absent (more sensitive cut-off), sensitivity was = 86.8 (95% CI: 74.8-98.9), specificity = 82.7 (95% CI: 78.0-87.3), likelihood ratio+ = 5.01 (95% CI: 3.77-6.67), likelihood ratio- = 0.16 (95% CI: 0.07-0.36), and diagnostic odds ratio (dOR) = 31.5 (95% CI: 11.7-84.8). Age, diabetes, and calcification (ABI ≥ 1.4) influenced the rate of a false negative finding in pedal palpation. Physician-nurse weighted kappa coefficient was = 0.649 (95% CI: 0.599-0.699). The presence of a femoral bruit auscultation had a dOR = 3.8 (95% CI: 1.1-13.1), and a calf circumference <34.55 cm had a dOR = 3.2 (95% CI: 1.6-6.4). CONCLUSIONS AND RELEVANCE: In a mainly asymptomatic Primary Care population, pedal pulse palpation was by far the best diagnostic test, with good diagnostic accuracy and inter-rater agreement. In view of a high sensitivity and capacity to rule out the disease, pedal pulse palpation could be performed as a screening test for PAD and individuals at high cardiovascular risk.


Assuntos
Perna (Membro)/patologia , Doença Arterial Periférica/diagnóstico , Exame Físico , Atenção Primária à Saúde/métodos , Idoso , Idoso de 80 Anos ou mais , Auscultação , Reações Falso-Negativas , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Variações Dependentes do Observador , Palpação , Sensibilidade e Especificidade
4.
Adicciones ; 27(3): 205-13, 2015 Sep 15.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-26437314

RESUMO

The prevalence of polydrug use continues to grow among Spanish college students. The European Observatory for Drugs and Addictions establishes three different types of polydrug use: Pattern A (consumers of alcohol and tobacco), Pattern B (consumers of cannabis plus alcohol and/or tobacco) and Pattern C (consumers of cannabis plus alcohol plus tobacco plus at least one other kind of illegal drug). The objectives are: 1) to study the frequency of substance consumption among a sample of young Spanish undergradudates studying health and sports science according to their sex; 2) to describe the patterns of polydrug use; 3) to study the relationship between the polydrug use of the participants and polydrug use within their closest environment (parents, sisters or brothers, best friend and partner). The sample was composed of 480 Spanish undergraduates (43.7% females) aged 18 to 36. The level of drug consumption of students and their closest reference persons was evaluated by means of a self-report measure. A total of 46% of the participants reported consumption of two or more substances; among them 29.4% corresponded to Pattern A, 50.7% to Pattern B and 16.7% to Pattern C, while 3.2% corresponded to other multiple consumption patterns (alcohol + cocaine; alcohol + cocaine + tobacco; alcohol + inhalants; amphetamines + hallucinogens + Spice). An important correlation was observed concerning polydrug use between participants and their closest reference persons: the more the reference person is a multiple consumer, the more the participant tends to consume. Polydrug use within the closest environment emerges as one of the key elements to be taken into account in further prevention programs.


El policonsumo de drogas es cada vez más prevalente entre los jóvenes españoles. El Observatorio Europeo de las Drogas y las Toxicomanías establece tres tipologías de policonsumo: Patrón A (consumidores de alcohol y tabaco), Patrón B (consumidores de cannabis junto con alcohol y/o tabaco) y Patrón C (consumidores de cannabis junto con alcohol y tabaco y al menos otra droga ilegal). Los objetivos son: 1) estudiar la frecuencia de consumo de drogas en una muestra de jóvenes universitarios españoles del ámbito de la salud y el deporte según el sexo; 2) describir los patrones de policonsumo; 3) estudiar la relación entre el policonsumo de los participantes y el policonsumo de las personas de su entorno próximo (padres, hermanos, pareja y mejor amigo). La muestra consta de 480 universitarios (43.7% chicas) entre 18 y 36 años. Se administró un autoinforme para evaluar el policonsumo de los participantes y de sus referentes más próximos. Un 46% de los participantes eran consumidores de dos o más sustancias, de los cuales un 29.4% correspondían al Patrón A, un 50.7% al Patrón B, un 16.7% al Patrón C y un 3.2% a otros patrones de policonsumo (alcohol + cocaína; alcohol + cocaína + tabaco; alcohol + inhalantes; anfetaminas + alucinógenos + Spice). Se observa una elevada concordancia entre el policonsumo de los participantes y el de sus referentes próximos, de modo que si el referente es policonsumidor es más probable que el participante también lo sea. El policonsumo de drogas en el entorno próximo de los jóvenes deviene uno de los elementos clave a tener en cuenta en futuras campañas preventivas.


Assuntos
Características da Família , Meio Social , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Adolescente , Adulto , Estudos Transversais , Feminino , Humanos , Masculino , Prevalência , Estudantes , Universidades , Adulto Jovem
5.
Artigo em Inglês | MEDLINE | ID: mdl-34501895

RESUMO

Determining the predictive variables associated with cannabis use and cannabis-related problems can ease the identification of young cannabis consumers who can benefit from prevention interventions. This study aimed: (1) to describe, among university students, the cannabis use and cannabis-use problems, intention to use cannabis and family climate based on the gender and the people the student lives with; (2) to explore whether the family climate and intention to use cannabis are predictors of cannabis use and cannabis-related problems. The sample was composed of 339 Spanish undergraduates (51.9% females) in a 17-to-25 age range (19.67 ± 1.53). The variables were assessed through a battery based on the ESPAD survey, cannabis abuse screening test, cannabis use intention questionnaire and family climate scale. More men than women had used cannabis in the precedent year and showed greater intention to use cannabis, whereas more women than men showed greater self-efficacy in not using cannabis. The family climate did not predict cannabis use and cannabis-related problems. However, subjective norms and self-efficacy were key predictors of cannabis use and cannabis-use problems, respectively. Different factors seemed to predict the use cannabis in the past year versus cannabis-related problems, and these differences may help inform the development and delivery of preventative efforts.


Assuntos
Cannabis , Fumar Maconha , Humanos , Intenção , Fumar Maconha/epidemiologia , Estudantes , Inquéritos e Questionários , Universidades
6.
J Clin Med ; 10(11)2021 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-34064120

RESUMO

The identification of variables that can modulate the efficacy of cue exposure using virtual reality (VR) is crucial. This study aimed to explore determinant variables of cue-elicited alcohol craving and perceived realism (PR) of environments and alcoholic beverages during a VR cue-exposure session among alcohol use disorder (AUD) outpatients. A prospective cohort study was conducted amongst 72 outpatients with AUD from a clinical setting. Alcohol craving experienced during VR exposure and PR of virtual environments and alcoholic drinks were evaluated after a VR session of exposure to alcohol-related contexts and cues. Sociodemographic, psychological and consumption characteristics were examined as possible predicting variables. Multiple linear regression analyses showed that the AUD severity and PR of beverages were predictors of cue-elicited alcohol craving. Educational level, PR of beverages and age were predictors of the PR of VR environments. In relation to the PR of VR beverages, cue-elicited alcohol craving and the PR of environments were predictors. A simple mediational model was also performed to analyze the influence of the PR of beverages on the relationship between the AUD severity and alcohol craving experienced during VR exposure: an indirect or mediational effect was found. PR of alcoholic beverages was (1) a key predictor of the PR of VR environments (and vice versa) and the alcohol craving (and vice versa) experienced during VR cue-exposure sessions using ALCO-VR software among AUD patients and (2) a mediator between AUD severity and cue-elicited alcohol craving.

7.
Front Psychol ; 12: 543586, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33692713

RESUMO

Aims: Attentional bias (AB), alcohol craving, and anxiety have important implications in the development and maintenance of alcohol use disorder (AUD). The current study aims to test the effectiveness of a Virtual Reality Cue-Exposure Therapy (VR-CET) to reduce levels of alcohol craving and anxiety and prompt changes in AB toward alcohol content. Method: A 49-year-old male participated in this study, diagnosed with severe AUD, who also used tobacco and illicit substances on an occasional basis and who made several failed attempts to cease substance misuse. The protocol consisted of six VR-CET booster sessions and two assessment sessions (pre- and post-VR-CET) over the course of 5 weeks. The VR-CET program consisted of booster therapy sessions based on virtual reality (VR) exposure to preferred alcohol-related cues and contexts. The initial and final assessment sessions were focused on exploring AB, alcohol craving, and anxiety using paper-and-pencil instruments and the eye-tracking (ET) and VR technologies at different time points. Results: Pre and post assessment sessions indicated falls on the scores of all instruments assessing alcohol craving, anxiety, and AB. Conclusions: This case report, part of a larger project, demonstrates the effectiveness of the VR-CET booster sessions in AUD. In the post-treatment measurements, a variety of instruments showed a change in the AB pattern and an improvement in craving and anxiety responses. As a result of the systematic desensitization, virtual exposure gradually reduced the responses to significant alcohol-related cues and contexts. The implications for AB, anxiety and craving are discussed.

8.
J Org Chem ; 75(18): 6267-70, 2010 Sep 17.
Artigo em Inglês | MEDLINE | ID: mdl-20738127

RESUMO

Two efficient palladium-catalyzed intramolecular α-arylation reactions of α-amino acid esters have been developed that allow either 1-isoindolecarboxylic acid esters or the corresponding isoindolines to be selectively synthesized simply by a slight change of reaction conditions.


Assuntos
Aminoácidos/química , Ácidos Carboxílicos/síntese química , Ésteres/química , Ésteres/síntese química , Isoindóis/síntese química , Paládio/química , Ácidos Carboxílicos/química , Catálise , Ciclização , Isoindóis/química , Estrutura Molecular , Estereoisomerismo
9.
Clin Dermatol ; 38(5): 574-579, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33280806

RESUMO

Paintings often show women with a clearance of the frontal hairline. We previously remarked how this was a form of pseudoalopecia that was voluntarily caused by women who shaved the frontal part of their hair for fashionable and esthetic reasons. In this paper, we emphasize in a second set of paintings showing a true alopecia that was caused by traction of the hair due to a tight hairstyle and was culturally favored in the 17th century.


Assuntos
Alopecia/etiologia , Alopecia/história , Estética/história , Remoção de Cabelo/efeitos adversos , Cabelo , Medicina nas Artes , Pinturas , Alopecia/patologia , Cultura , Feminino , História do Século XV , História do Século XVI , História do Século XVII , Humanos , Classe Social
10.
J Clin Med ; 9(9)2020 Sep 18.
Artigo em Inglês | MEDLINE | ID: mdl-32962176

RESUMO

BACKGROUND/OBJECTIVE: Determining the predictive variables associated with levels of alcohol craving can ease the identification of patients who can benefit from treatments. This study aimed to describe changes (improvement or no change/deterioration) in alcohol craving levels and explore the predictors of these changes from admission to discharge in outpatients with alcohol use disorder (AUD) undergoing treatment-as-usual (TAU), or treatment-as-usual supplemented with virtual reality cue-exposure therapy (TAU + VR-CET). METHOD: A prospective cohort study was conducted amongst 42 outpatients with AUD (n = 15 TAU + VR-CET and n = 27 TAU) from a clinical setting. Changes in the levels of alcohol craving between admission and discharge were assessed with the Multidimensional Alcohol Craving Scale. Sociodemographic characteristics (age, gender, education, and socioeconomic and civil status), cognitive-affective behavioral patterns (AUD severity, abstinence duration, psychiatric comorbidity, state anxiety, attentional bias, and substance use), and type of treatment (TAU + VR-CET and only TAU) were also evaluated. RESULTS: The TAU + VR-CET group showed greater changes of improvement in the levels of alcohol craving than the TAU group (χ2 = 10.996; p = 0.001). Intragroup changes in alcohol craving from pre to post-treatment were significant in the TAU + VR-CET group (χ2 = 13.818; p = 0.003) but not within the TAU group (χ2 = 2.349; p = 0.503). The odds of an improvement in any of the craving levels between pre- and post-test was 18.18 (1/0.055) times higher in the TAU + VR-CET group with respect to the TAU group. The use of illicit drugs in the month prior to the test increased the odds of having a positive change by 18.18 (1/0.055) with respect to not having consumed. CONCLUSIONS: Including VR-CET in TAU programs may provide benefits in the treatment of AUDs mainly among patients with intense alcohol craving and individuals having used illicit substances prior to treatment.

11.
Org Biomol Chem ; 7(17): 3382-4, 2009 Sep 07.
Artigo em Inglês | MEDLINE | ID: mdl-19675889

RESUMO

The Pd-catalysed intramolecular alpha-arylation of alpha-amino acid esters provides a useful methodology for the synthesis of substituted isoindole derivatives, which have been used in Diels-Alder reactions to access diverse skeletal frameworks.


Assuntos
Ésteres/síntese química , Compostos Heterocíclicos/síntese química , Isoindóis/síntese química , Aminoácidos/química , Compostos Bicíclicos Heterocíclicos com Pontes/síntese química , Catálise , Ésteres/química , Compostos Heterocíclicos de Anel em Ponte/síntese química , Isoindóis/química , Paládio/química
12.
J Addict Nurs ; 30(2): 108-113, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31162214

RESUMO

Polydrug use among university students may be a predictor for established patterns of multiple substance use and potentially entail long-term health problems. This study examined the types of polydrug use among Spanish students in health sciences. Undergraduate students (n = 968), aged 18-38 years (M = 21.09 years, SD = 4.10), completed the survey. A percentage of 44.3% of the participants were classified as polydrug users. Type A users (alcohol and cigarettes) made up 17.8% of the participants surveyed, whereas 20.1% were Type B (cannabis with cigarettes and/or alcohol), and a further 5.7% were Type C (cannabis with cigarettes and/or alcohol, plus at least another kind of illegal drug). Type A was the most common type among women, whereas Type C was the most common among men. Type B use was higher among women 18-19 years old than among women 25-29 years old, whereas there were no female Type C users younger than 20 years old. Weekend consumption was higher, than weekday consumption, across all polydrug user types and substances. These results suggest that the prevalence of polydrug use among Spanish students in health sciences was similar to students in other disciplines, with Type B as the most prevalent among healthcare and nonhealthcare students. Taking into account the differences based on gender, age, and time of consumption, a specific approach to the different typologies of polydrug users might be a vital step in the successful development of preventive interventions tailored to the changing reality of psychoactive substance use.


Assuntos
Estudantes/estatística & dados numéricos , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Adolescente , Adulto , Estudos Transversais , Feminino , Humanos , Masculino , Prevalência , Espanha/epidemiologia , Estudantes/psicologia , Fatores de Tempo , Adulto Jovem
13.
J Clin Med ; 8(8)2019 Aug 02.
Artigo em Inglês | MEDLINE | ID: mdl-31382353

RESUMO

BACKGROUND: This study is part of a larger project aiming to develop a virtual reality (VR) software to be implemented as a clinical tool for patients diagnosed with alcohol use disorder (AUD). The study is based on previous research in which we identified factors that elicit craving for alcohol in a sample of AUD patients, and which led to the development of a virtual reality software to be used in cue exposure treatments of alcohol use disorder (ALCO-VR). The main objective of this study was to test the effectiveness of ALCO-VR to elicit cue-induced craving and anxiety responses among social drinkers (SD) and AUD patients. Our secondary objective was to explore which responses (cue-induced craving or anxiety) can best differentiate between AUD patients and the SD group. METHOD: Twenty-seven individuals (13 AUD patients and 14 SD) participated in this study after giving written informed consent. Their anxiety and alcohol craving levels were measured by different instruments at different stages of the procedure. The VR equipment consisted of Oculus Rift technology, and the software consisted of the ALCO-VR platform. RESULTS: Our data indicate that the ALCO-VR software can elicit responses of anxiety and alcohol craving, especially in the group of AUD patients. The cue-induced anxiety response differentiated AUD patients and the SD group better than the cue-induced craving response. CONCLUSIONS: The general interest in applying new technologies to the assessment and treatment of mental health disorders has led to the development of immersive real-life simulations based on the advantages of VR technology. Our study concluded that the ALCO-VR software can elicit anxiety and craving responses and that cue-induced anxiety responses can distinguish between AUD and SD groups better than cue-induced craving. The data on craving and anxiety were assessed consistently by different instruments. In addition, we consider that ALCO-VR is able to ecologically assess cue-induced anxiety and alcohol craving levels during exposure to VR alcohol-related environments.

14.
J Org Chem ; 73(23): 9372-8, 2008 Dec 05.
Artigo em Inglês | MEDLINE | ID: mdl-19006369

RESUMO

Two different reaction pathways, the enolate arylation and the acylation of the aryl halide, can be promoted by a Pd(0) catalyst starting from beta-(2-iodoanilino) carboxamides. The intramolecular acylation of beta-(2-iodoanilino) carboxamides reported here is the first example of a nucleophilic attack of a sigma-arylpalladium species at the carboxamide group, a framework that is usually inert toward organopalladium reagents.


Assuntos
Amidas/química , Carbono/química , Ácidos Carboxílicos/síntese química , Química Orgânica/métodos , Paládio/química , Compostos de Anilina/química , Ácidos Carboxílicos/química , Catálise , Iodobenzenos/química , Modelos Químicos , Estereoisomerismo
15.
Biomedica ; 28(1): 108-15, 2008 Mar.
Artigo em Espanhol | MEDLINE | ID: mdl-18645666

RESUMO

INTRODUCTION: Chagas disease has been a public health problem in Latin America for many years. In Venezuela the disease is mainly distributed in the rural populations and endemic areas with an overall seroprevalence index of 8,3% for the year 2000. OBJECTIVE: The infection seroprevalence of Trypanosoma cruzi was determined in the human population younger than 16 years. An the entomological index was obtained and the grade of knowledge of the Chagas disease was surveyed in the local inhabitants. MATERIALS AND METHODS: A descriptive cross-sectional field study was performed in two rural communities of the municipality Costa de Oro, State Aragua, Venezuela. Here, T. cruzi-seropositive testing was conducted in subjects younger than 16 years. The samples were processed using indirect hemagglutination and by ELISA (enzyme-linked immunosorbent assay). A questionnaire was administered to assess household risk factors, and knowledge about vectors and disease held by the local population. Searches for triatomines were conducted inside of dwellings. RESULTS: Seroprevalence in children less than 16 years old was 1.02%. Sixteen specimens of triatominae adults were captured. The vector species recognized were Panstrongylus geniculatus, Rhodnius pictipes, and Eratyrus mucronatus. The index of triatomid infestation with respect to site and house was respectively, 100% and 10.9%. No association was found between the seropositives and the other variables. Of the interviewed individuals, 95% knew that insects transmit diseases, but less than 46% knew that triatominds transmit Chagas disease or were aware of the disease pathology. CONCLUSION: The discovery of secondary vectors in the area outlines the necessity to carry out epidemiological and entomological studies that associate environmental variables with the habitat of these insects. This will allow the identification of risk factors responsible for the transmission of Chagas disease in this region.


Assuntos
Doença de Chagas/sangue , Doença de Chagas/epidemiologia , População Rural , Estudos Soroepidemiológicos , Adolescente , Adulto , Animais , Doença de Chagas/transmissão , Criança , Estudos Transversais , Feminino , Humanos , Insetos Vetores , Masculino , Fatores de Risco , Inquéritos e Questionários , Trypanosoma cruzi , Venezuela/epidemiologia
16.
Behav Sci (Basel) ; 8(3)2018 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-29494479

RESUMO

The combined use of cannabis and tobacco is frequent in Europe. Few studies have nonetheless explored this pattern of consumption and its relationship with academic achievement in Spanish population. The aim of the present study was to analyze (1) the frequency of four patterns of polydrug use the last year (non-dual users of cannabis and tobacco; concurrent users: cannabis and tobacco separately; simultaneous users: tobacco in cannabis "joints"; simultaneous users: tobacco in cannabis joints alongside alcohol) by gender and age; (2) grade point average (GPA) by gender and age; (3) the association between the frequency of the four patterns of use and the GPA amongst a sample of 477 Spanish university students. The use of cannabis and tobacco (concurrent and simultaneous) and GPA were assessed by means of self-reported questionnaires. Statistically significant differences were found for the GPA with respect to gender. The GPA by the non-dual users of cannabis and tobacco was significantly higher than the GPA corresponding to the concurrent and simultaneous users. The combined use of cannabis and tobacco, regardless of the type of use (concurrent or simultaneous), is moderately related to poor academic achievement amongst university students.

17.
J Drug Educ ; 43(4): 331-51, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-25445808

RESUMO

The objective of the present study was to examine the contribution of three intervention components (public commitment, resistance to advertising, and leisure promotion) on alcohol and protective variables in a school-based substance use prevention program. Participants included 480 Spanish students aged from 14 to 16 who received the Saluda prevention program in one of the following five experimental conditions: complete program, program minus public commitment, program minus resistance to advertising, program minus leisure promotion, and a waiting-list control. The students completed self-report surveys at pretest, posttest, and 6-month follow-up assessments. When excluding the healthy leisure promotion component, the Saluda program showed no loss of efficacy neither on alcohol use nor on other substance-related variables, while public commitment and resistance to advertising improved the aforementioned program's efficacy.


Assuntos
Publicidade , Educação em Saúde/organização & administração , Atividades de Lazer , Opinião Pública , Serviços de Saúde Escolar/organização & administração , Transtornos Relacionados ao Uso de Substâncias/prevenção & controle , Adolescente , Alcoolismo/prevenção & controle , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Intenção , Masculino , Avaliação de Programas e Projetos de Saúde , Meio Social
19.
J Pharm Sci ; 101(10): 3739-52, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22777575

RESUMO

Oral candidosis is a common opportunistic infection in patients suffering from mucositis (after chemotherapy and radiotherapy administration) and must be treated to prevent infecting other tissue. Nystatin (Nys) is one of the most prescribed drugs to treat this pathology, but because of its physicochemical properties, its pharmaceutical-technological requirements make it a challenge. The purpose of this work was the development and characterization of an optimal Nys delivery system for the potential treatment of oral candidosis avoiding undesirable side effects and toxicity of potential systemic absorption. A nanoemulsion was developed, evaluated, and characterized. It has been formulated successfully as a stable nanoemulsion with a droplet size of 138 nm. Release parameters were estimated using different mathematical approaches, and from the results of ex vivo permeation study of Nys through porcine buccal mucosa, it could be hypothesized that no systemic effects would happen. Microbiologic studies performed revealed an enhanced antifungal effect of the Nys-loaded nanoemulsion. Also, the evaluation of the treated buccal mucosa ultrastructure by transmission electron microscopy revealed a harmless effect. Thus, it could be inferred that the developed formulation could be potentially utilized for candidosis infection under mucositis conditions.


Assuntos
Candidíase Bucal/tratamento farmacológico , Nanopartículas/administração & dosagem , Nanopartículas/química , Nistatina/administração & dosagem , Nistatina/química , Absorção , Antifúngicos/administração & dosagem , Antifúngicos/química , Candida albicans/efeitos dos fármacos , Bochecha/microbiologia , Química Farmacêutica/métodos , Sistemas de Liberação de Medicamentos/métodos , Emulsões/administração & dosagem , Emulsões/química , Mucosa Bucal/efeitos dos fármacos , Mucosa Bucal/microbiologia , Tamanho da Partícula , Saccharomyces cerevisiae/efeitos dos fármacos
20.
J Org Chem ; 73(6): 2476-9, 2008 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-18284256

RESUMO

beta-(2-Iodoanilino) esters undergo intramolecular alpha-arylation in the presence of Pd(PPh(3))(4) and potassium phenoxide. The reaction is a useful methodology for the preparation of indole-3-carboxylic acid ester derivatives.


Assuntos
Compostos de Anilina/química , Ácidos Carboxílicos/síntese química , Indóis/síntese química , Iodobenzenos/química , Catálise , Ésteres/química , Paládio/química
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