RESUMEN
BACKGROUND: Attention-deficit and hyperactivity disorder (ADHD) is frequently diagnosed in patients with substance use disorders (SUDs), including opioids. There remains concern about the safety and efficacy of prescription amphetamines (PAs) and their impact on effectiveness of opioid use disorder (OUD) treatment with buprenorphine. OBJECTIVES: To assess the effect of PAs on OUD buprenorphine treatment retention and/or SUD-related emergency admission or drug-related poisonings. METHODS: We used a retrospective cohort design with a secondary analysis of data from Merative MarketScan Commercial and Multi-State Medicaid Databases from 1 January 2006 to 31 December 2016. Individuals included were aged 12-64 years, had an OUD diagnosis and were prescribed buprenorphine. Our analysis used multivariable Cox regression to evaluate the relationship between PA receipt and time to buprenorphine discontinuation. The second part focused on subsamples of buprenorphine initiators who had either (1) any SUD-related emergency admissions or (2) drug-related poisoning. These outcomes were modelled as a function of PA exposure using conditional logistic regression models as part of a within-person, case-crossover design. FINDINGS: Our sample had 90 269 patients with OUD (mean age 34.2 years (SD=11.3)) who initiated buprenorphine. Being prescribed a PA was associated with improved buprenorphine retention among individuals both with (adjusted HR (aHR) 0.91 (95% CI 0.86 to 0.97)) and without a concurrent psychostimulant use disorder (PSUD) (aHR 0.92 (95% CI 0.90 to 0.93)). CONCLUSIONS: PA use was associated with improved buprenorphine retention in people with OUD with and without co-occurring PSUD. The risks of acute SUD-related events and drug-related poisonings associated with PA use did not differ when comparing PA-using days with days without PA use. CLINICAL IMPLICATIONS: Patients with OUD on buprenorphine should receive treatment with a PA when indicated.
Asunto(s)
Buprenorfina , Sobredosis de Droga , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Trastornos Relacionados con Opioides , Adulto , Humanos , Anfetaminas/uso terapéutico , Buprenorfina/uso terapéutico , Sobredosis de Droga/tratamiento farmacológico , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/tratamiento farmacológico , Tratamiento de Sustitución de Opiáceos , Trastornos Relacionados con Opioides/tratamiento farmacológico , Estudios Retrospectivos , Estudios CruzadosRESUMEN
Families and youth from the Northern Triangle of Central America seeking asylum in the U.S. report substantial trauma exposure and post-traumatic stress symptoms. Sexual and gender minorities of this population especially present unique circumstances and thus challenges and needs. However, with immigration along the southern U.S. border at a 21-year high, health and social resources for refugees and asylum seekers are being strained. Accordingly, the primary aim of this review is to raise awareness about migration-related trauma and the mental health needs among Central American and LGBTQ + refugees and asylum seekers in the U.S.-Mexico border. The authors also discuss practical, clinical, and advocacy implications to improve the mental health of refugees and asylum seekers entering the United States.
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Refugiados , Trastornos por Estrés Postraumático , Adolescente , Humanos , Refugiados/psicología , Salud Mental , México , Trastornos por Estrés Postraumático/terapia , Trastornos por Estrés Postraumático/psicología , Hispánicos o LatinosRESUMEN
RATIONALE: Agonist-based pharmacologic intervention is an accepted approach in treatment of opioid and tobacco use disorders. OBJECTIVES: We conducted a systematic review and meta-analysis to evaluate usefulness of an agonist approach as treatment of (psycho)stimulant use disorder (PSUD). METHODS: We reviewed PubMed/Medline, LILACS, and ClinicalTrials.gov databases searching for randomized, double-blind, placebo-controlled, parallel-design studies evaluating outcomes of individuals treated for cocaine- or amphetamine-type substance use disorder. We combined results of all trials that included the following prescription psychostimulants (PPs): modafinil, methylphenidate, or amphetamines (mixed amphetamine salts, lisdexamphetamine, and dextroamphetamine). The combined sample consisted of 2889 patients. Outcomes of interest included the following: drug abstinence (defined as 2-3 weeks of sustained abstinence and the average maximum days of consecutive abstinence), percentage of drug-negative urine tests across trial, and retention in treatment. We conducted random-effects meta-analyses and assessed quality of evidence using the GRADE system. RESULTS: Thirty-eight trials were included. Treatment with PPs increases rates of sustained abstinence [risk ratio (RR) = 1.45, 95% confidence interval (CI) = (1.10, 1.92)] and duration of abstinence [mean difference (MD) = 3.34, 95% CI = (1.06, 5.62)] in patients with PSUD, particularly those with cocaine use disorder (very low-quality evidence). Prescription amphetamines were particularly efficacious in promoting sustained abstinence in patients with cocaine use disorder [RR = 2.44, 95% CI = (1.66, 3.58)], and higher doses of PPs were particularly efficacious for treatment of cocaine use disorder [RR = 1.95, 95% CI = (1.38, 2.77)] (moderate-quality evidence). Treatment with prescription amphetamines also yielded more cocaine-negative urines [MD = 8.37%, 95% CI = (3.75, 12.98)]. There was no effect of PPs on the retention in treatment. CONCLUSION: Prescription psychostimulants, particularly prescription amphetamines given in robust doses, have a clinically significant beneficial effect to promote abstinence in the treatment of individuals with PSUD, specifically the population with cocaine use disorder.
Asunto(s)
Estimulantes del Sistema Nervioso Central/uso terapéutico , Medicamentos bajo Prescripción/uso terapéutico , Trastornos Relacionados con Sustancias/diagnóstico , Trastornos Relacionados con Sustancias/tratamiento farmacológico , Anfetamina/uso terapéutico , Cocaína/uso terapéutico , Método Doble Ciego , Humanos , Dimesilato de Lisdexanfetamina/uso terapéutico , Metilfenidato/uso terapéutico , Modafinilo/uso terapéutico , Ensayos Clínicos Controlados Aleatorios como Asunto/métodos , Trastornos Relacionados con Sustancias/psicología , Resultado del TratamientoRESUMEN
OBJECTIVES: Attention deficit hyperactivity disorder (ADHD) and substance use disorders (SUD) are overrepresented among incarcerated populations. We examined whether ADHD was associated with increased severity of comorbid SUD and with increased psychiatric comorbidity among prisoners. METHODS: Cross-sectional study of 500 randomly selected Latino male prisoners in the Puerto Rico Correctional System using validated diagnostic measures to assess Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5) ADHD and SUD diagnosis, antisocial personality disorder (ASP) and borderline personality disorder (BPD), major depression, and generalized anxiety disorder (GAD). We defined SUD severity by symptom count and by presence of at least 2 current SUD diagnoses (polysubstance). RESULTS: Participants with ADHD had increased risk for lifetime (p < 0.05) and current (p < 0.01) SUDs, all comorbid psychiatric disorders, and suicidality (p < 0.001). They had more severe SUD, both in number of symptoms and number of SUD (polysubstance) diagnoses (p < 0.01). ADHD was associated with increased psychiatric comorbidity, as participants with ADHD were more likely to have a second diagnosis, and a greater number of comorbid disorders (p < 0.001). ASP, BPD, major depression, and GAD, but not ADHD, were significant predictors of SUD severity in adjusted models. CONCLUSIONS: Findings highlight the complex mental health needs of incarcerated populations, where SUD, ADHD, and other psychiatric disorders are prevalent and interrelated.
Asunto(s)
Trastornos de Ansiedad/diagnóstico , Trastorno por Déficit de Atención con Hiperactividad/diagnóstico , Comorbilidad , Trastorno Depresivo/diagnóstico , Trastornos de la Personalidad/diagnóstico , Prisioneros/estadística & datos numéricos , Trastornos Relacionados con Sustancias/diagnóstico , Adulto , Estudios Transversales , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Humanos , Masculino , Escalas de Valoración Psiquiátrica , Puerto Rico , Encuestas y CuestionariosRESUMEN
AIMS: To examine the role of attention deficit/hyperactivity disorder (ADHD) and impulsive personality disorders in nicotine addiction severity among treatment-seeking substance use disorder (SUD) patients. METHODS: In a cross-sectional study, we examined data from the second International ADHD in Substance Use Disorders Prevalence Study (IASP-2) on 402 adults in SUD treatment from Puerto Rico, Hungary, and Australia using diagnostic interviews for ADHD, antisocial (ASP) and borderline (BPD) personality disorders, and the self-report Fagerström Test of Nicotine Dependence (FTND). We compared SUD patients with and without ADHD on nicotine addiction severity. We tested direct and indirect pathways from ADHD to nicotine addiction and mediation through ASP and BPD. RESULTS: Overall, 81.4% of SUD patients reported current cigarette smoking. SUD patients with ADHD had higher FTND scores and smoked more cigarettes than those without ADHD, with an earlier onset and more years of smoking. ASP mediated the effect of ADHD on all aspects of nicotine addiction severity, whereas BPD did so only on some aspects of nicotine addiction severity. CONCLUSIONS: SUD patients with comorbid ADHD show more severe nicotine addiction than those without, which is largely explained by comorbid impulsive personality disorders. In SUD patients, it is important to screen for adult ADHD and other psychiatric disorders, especially those with impulse control deficits such as ASP and BPD.
Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad , Comorbilidad , Trastornos de la Personalidad/epidemiología , Fumar , Trastornos Relacionados con Sustancias/epidemiología , Trastornos Relacionados con Sustancias/terapia , Adulto , Trastorno por Déficit de Atención con Hiperactividad/complicaciones , Trastorno por Déficit de Atención con Hiperactividad/diagnóstico , Australia , Estudios Transversales , Femenino , Humanos , Hungría , Masculino , Escalas de Valoración Psiquiátrica , Puerto Rico , Factores de Riesgo , AutoinformeRESUMEN
AIMS: This study addressed the age of onset of conduct disorder (CD) and oppositional defiant disorder (ODD) in treatment-seeking substance use disorder (SUD) patients with and without adult attention-deficit/hyperactivity disorder (ADHD) and its association with early onset of SUD. METHODS: We examined data from the 2nd International ADHD in Substance Use Disorders Prevalence Study, including 400 adults in SUD treatment from Puerto Rico, Hungary, and Australia. ADHD, SUD, and CD/ODD were assessed with the Conners Adult ADHD Diagnostic Interview for DSM-IV, the MINI International Neuropsychiatric Interview, and the K-SADS, respectively. Cox regression analyses modeled time to emergence of CD/ODD separately for SUD patients with and without adult ADHD. Linear regression models examined associations between age of onset of SUD and presence of ADHD and adjusted for sex, age, and country. To assess the mediating role of CD/ODD on the association of ADHD with onset of SUD, adjusted regression models were estimated. RESULTS: Treatment-seeking SUD patients with ADHD presented an earlier onset of CD/ODD compared with those without ADHD. CD/ODD symptom loads were higher among the SUD and ADHD group. Age of first substance use and SUD were significantly earlier in SUD patients with ADHD, and these findings remained significant after adjustment for demographics and coexisting CD/ODD. CONCLUSIONS: ADHD is associated with earlier onset of SUD as well as with an earlier onset of more frequent and more severe disruptive behavioral disorders. These findings may inform preventive interventions to mitigate adverse consequences of ADHD.
Asunto(s)
Edad de Inicio , Déficit de la Atención y Trastornos de Conducta Disruptiva , Índice de Severidad de la Enfermedad , Trastornos Relacionados con Sustancias/terapia , Adulto , Déficit de la Atención y Trastornos de Conducta Disruptiva/diagnóstico , Déficit de la Atención y Trastornos de Conducta Disruptiva/epidemiología , Australia/epidemiología , Comorbilidad , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Femenino , Humanos , Hungría/epidemiología , Entrevistas como Asunto , Masculino , Escalas de Valoración Psiquiátrica , Puerto Rico/epidemiología , Factores de Riesgo , Autoinforme , Trastornos Relacionados con Sustancias/epidemiologíaRESUMEN
OBJECTIVE: To determine the effects of late surfactant on respiratory outcomes determined at 1-year corrected age in the Trial of Late Surfactant (TOLSURF), which randomized newborns of extremely low gestational age (≤28 weeks' gestational age) ventilated at 7-14 days to late surfactant and inhaled nitric oxide vs inhaled nitric oxide-alone (control). STUDY DESIGN: Caregivers were surveyed in a double-blinded manner at 3, 6, 9, and 12 months' corrected age to collect information on respiratory resource use (infant medication use, home support, and hospitalization). Infants were classified for composite outcomes of pulmonary morbidity (no PM, determined in infants with no reported respiratory resource use) and persistent PM (determined in infants with any resource use in ≥3 surveys). RESULTS: Infants (n = 450, late surfactant n = 217, control n = 233) were 25.3 ± 1.2 weeks' gestation and 713 ± 164 g at birth. In the late surfactant group, fewer infants received home respiratory support than in the control group (35.8% vs 52.9%, relative benefit [RB] 1.28 [95% CI 1.07-1.55]). There was no benefit of late surfactant for No PM vs PM (RB 1.27; 95% CI 0.89-1.81) or no persistent PM vs persistent PM (RB 1.01; 95% CI 0.87-1.17). After adjustment for imbalances in baseline characteristics, relative benefit of late surfactant treatment increased: RB 1.40 (95% CI 0.89-1.80) for no PM and RB 1.24 (95% CI 1.08-1.42) for no persistent PM. CONCLUSION: Treatment of newborns of extremely low gestational age with late surfactant in combination with inhaled nitric oxide decreased use of home respiratory support and may decrease persistent pulmonary morbidity. TRIAL REGISTRATION: ClinicalTrials.gov: NCT01022580.
Asunto(s)
Recien Nacido con Peso al Nacer Extremadamente Bajo , Óxido Nítrico/administración & dosificación , Surfactantes Pulmonares/administración & dosificación , Respiración Artificial/métodos , Síndrome de Dificultad Respiratoria del Recién Nacido/terapia , Administración por Inhalación , Factores de Edad , Displasia Broncopulmonar/prevención & control , Intervalos de Confianza , Relación Dosis-Respuesta a Droga , Método Doble Ciego , Esquema de Medicación , Femenino , Estudios de Seguimiento , Edad Gestacional , Humanos , Lactante , Recién Nacido , Masculino , Síndrome de Dificultad Respiratoria del Recién Nacido/diagnóstico , Medición de Riesgo , Tasa de Supervivencia , Factores de TiempoRESUMEN
Performance-based measures have shown some limitation in the assessment of executive functioning (EF) and rating scales have been proposed as an alternative. Our aim was to conduct a comprehensive psychometric evaluation of the Barkley Deficits in Executive Functioning Scale (BDEFS), as administered in 452 Latino community adults (65.5% female). The BDEFS was back-translated into Spanish. We performed exploratory factor analysis (EFA) to assess the structure of the translated BDEFS and to compare it with the original five-factor structure based on the English-language version. Confirmatory factor analysis (CFA) was performed to test the original language structure of the instrument, and also a modified version with items that loaded equally in both versions. The Adult Self-Report Scale was used to screen for ADHD symptoms. We assessed invariance on the latent factor's mean by age and gender, and to estimate associations with ADHD symptom dimensions. The five-factor structure of the BDEFS was partially supported by EFA/CFA, in which 78 out of 89 items loaded similar to the original English-language structure. Factor scores were significantly associated with ADHD symptom dimensions. Model-based contrasts revealed that inattention was primarily associated with disorganization, time-management and motivational aspects of EF; hyperactivity was predominantly related to self-restraint and self-regulation factors. The BDEFS seemingly assesses similar dimensions of the EF construct in English and in the present Spanish-language versions. Factor scores were differentially associated with ADHD subtypes. Replication and confirmation of the Spanish-language BDEFS in a larger sample is advised. (PsycINFO Database Record
Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/fisiopatología , Función Ejecutiva/fisiología , Escalas de Valoración Psiquiátrica/normas , Psicometría/instrumentación , Adulto , Análisis Factorial , Femenino , Humanos , Masculino , Puerto Rico , AutoinformeRESUMEN
OBJECTIVE: To assess whether late surfactant treatment in extremely low gestational age (GA) newborn infants requiring ventilation at 7-14 days, who often have surfactant deficiency and dysfunction, safely improves survival without bronchopulmonary dysplasia (BPD). STUDY DESIGN: Extremely low GA newborn infants (GA ≤28 0/7 weeks) who required mechanical ventilation at 7-14 days were enrolled in a randomized, masked controlled trial at 25 US centers. All infants received inhaled nitric oxide and either surfactant (calfactant/Infasurf) or sham instillation every 1-3 days to a maximum of 5 doses while intubated. The primary outcome was survival at 36 weeks postmenstrual age (PMA) without BPD, as evaluated by physiological oxygen/flow reduction. RESULTS: A total of 511 infants were enrolled between January 2010 and September 2013. There were no differences between the treated and control groups in mean birth weight (701 ± 164 g), GA (25.2 ± 1.2 weeks), percentage born at GA <26 weeks (70.6%), race, sex, severity of lung disease at enrollment, or comorbidities of prematurity. Survival without BPD did not differ between the treated and control groups at 36 weeks PMA (31.3% vs 31.7%; relative benefit, 0.98; 95% CI, 0.75-1.28; P = .89) or 40 weeks PMA (58.7% vs 54.1%; relative benefit, 1.08; 95% CI, 0.92-1.27; P = .33). There were no between-group differences in serious adverse events, comorbidities of prematurity, or severity of lung disease to 36 weeks. CONCLUSION: Late treatment with up to 5 doses of surfactant in ventilated premature infants receiving inhaled nitric oxide was well tolerated, but did not improve survival without BPD at 36 or 40 weeks. Pulmonary and neurodevelopmental assessments are ongoing. TRIAL REGISTRATION: ClinicalTrials.gov: NCT01022580.
Asunto(s)
Displasia Broncopulmonar/etiología , Óxido Nítrico/administración & dosificación , Surfactantes Pulmonares/uso terapéutico , Respiración Artificial/efectos adversos , Administración por Inhalación , Displasia Broncopulmonar/epidemiología , Femenino , Humanos , Recién Nacido , Recien Nacido Prematuro , Enfermedades del Prematuro/mortalidad , Enfermedades del Prematuro/terapia , Recién Nacido de muy Bajo Peso , Masculino , Óxido Nítrico/efectos adversos , Surfactantes Pulmonares/efectos adversos , Respiración Artificial/mortalidad , Tasa de Supervivencia , Estados UnidosRESUMEN
OBJECTIVE: This study aimed to explore retrospective childhood ADHD symptomatology, psychiatric comorbidity, rates of substance-use disorders (SUD), as well as their association with high-risk health behaviors in prison and adverse health outcomes. METHOD: A randomly selected representative sample of inmates in the Puerto Rico correctional system (N = 1,179) was assessed with the Spanish-language Wender Utah Rating Scale (WURS); the Composite International Diagnostic Interview (CIDI) modules for lifetime/current major depression disorder (MDD), generalized anxiety disorder (GAD), and SUD; the Davidson Trauma Scale (DTS; posttraumatic stress disorder [PTSD]); and self-reports of in-site high-risk behaviors. RESULTS: Wald χ(2) tests revealed significant associations of ADHD with MDD and PTSD, as well as increased risk for overdosing and intravenous drug use in prison. A logistic regression model adjusted for mood and anxiety comorbidity predicted lifetime SUD diagnosis (odds ratio = 2.38; 95% confidence interval = [1.15, 4.94]). CONCLUSION: Our results provide further evidence on the association of drug dependence and ADHD symptoms, and their overrepresentation among prison inmates.
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Hispánicos o Latinos/psicología , Prisioneros/psicología , Asunción de Riesgos , Trastornos por Estrés Postraumático/etnología , Trastornos Relacionados con Sustancias/epidemiología , Adolescente , Adulto , Ansiedad/etnología , Ansiedad/psicología , Trastorno por Déficit de Atención con Hiperactividad/etnología , Trastorno por Déficit de Atención con Hiperactividad/psicología , Comorbilidad , Trastorno Depresivo Mayor/etnología , Trastorno Depresivo Mayor/psicología , Femenino , Conductas Relacionadas con la Salud , Hispánicos o Latinos/estadística & datos numéricos , Humanos , Persona de Mediana Edad , Pruebas Neuropsicológicas , Prevalencia , Escalas de Valoración Psiquiátrica , Puerto Rico , Estudios Retrospectivos , Trastornos por Estrés Postraumático/psicología , Adulto JovenRESUMEN
The objective of this study was to explore beliefs and treatment decisions of foreign-born Latino men from Cuba, Mexico, Colombia, and Venezuela, who have been diagnosed with cancer and who live in Central Florida, USA. Experiences related to knowledge of diagnosis, treatment decisions, communication with health providers, family involvement, and advance care planning (ACP) discussions following the diagnosis of cancer are central to this study. This study used qualitative in-depth semi-structured interviews and thematic analysis. The interviews were conducted with 15 Latino men who have been diagnosed with cancer within the past 5 years and who reside in the community. The interviews were conducted and transcribed in Spanish and then translated into English. The median age was 55.4 years. Nine Latino men had prostate cancer, two had brain cancer, two had colorectal cancer, and two had lung cancer. Emerging themes involved the suddenness of the diagnosis, fear of dying, expectations of diagnosis-related communication, reliance on physicians for treatment decisions, limited information pertaining to ACP, family support, and role changes. Latino men's limited knowledge of cancer diagnosis and treatment options coupled with their fear led them to immediately believe that they were going to die. Knowledge gaps regarding diagnosis-related communication, treatment decisions, and ACP varied among the men. The forthright diagnosis communication and the expectation to engage in decision making are contrary to Latinos men's beliefs of reliance on health providers decisions. The findings contribute to understanding Latino men's beliefs about a cancer diagnosis and treatment decisions.
Asunto(s)
Planificación Anticipada de Atención/estadística & datos numéricos , Características Culturales , Toma de Decisiones , Conductas Relacionadas con la Salud/etnología , Hispánicos o Latinos/psicología , Neoplasias de la Próstata/psicología , Neoplasias de la Próstata/terapia , Adulto , Anciano , Colombia , Conocimientos, Actitudes y Práctica en Salud , Humanos , Masculino , Persona de Mediana Edad , Proyectos PilotoRESUMEN
PURPOSE: Limited knowledge exists pertaining to advance care planning (ACP) among Colombian, Mexican, and Puerto Rican women with a cancer diagnosis living in Central Florida, in the USA. The purpose of the study is to identify factors that facilitated the completion of ACP and decisions making patterns among the three groups of Latinas. METHODS: The research method used was an exploratory qualitative in-depth open-ended semi-structured interview with a grounded theoretical approach and thematic analysis. The interviews were conducted in Spanish with a purposeful sample of 45 Latinas (15 in each group) diagnosed with cancer. RESULTS: A total of ten women (22 %) in the study documented at least one form of ACP. Thirty-five women identified obstacles to accessing information regarding ACP, relating this to insurance and financial factors. Among the Colombian women, one completed a living will, health care surrogate, and power of attorney (all forms of ACP), and three just a living will. Two Puerto Rican women completed all, two a living will, and one both a living will and an enduring power of attorney. Only one Mexican woman completed a living will. CONCLUSIONS: This study identifies a knowledge gap regarding ACP among Latina women with cancer diagnosis living in Central Florida, in the USA. Differences between the three groups exist as a result of migration/immigration history, family support, education, English language proficiency, income, knowledge gaps, and information ascertained by medical and health professionals. These differences contribute to their readiness, receptiveness, and willingness to engage in documenting a living will, a health care surrogate, and an enduring power of attorney for health decisions.
Asunto(s)
Planificación Anticipada de Atención/estadística & datos numéricos , Hispánicos o Latinos/estadística & datos numéricos , Neoplasias/terapia , Adolescente , Adulto , Colombia/etnología , Toma de Decisiones , Emigrantes e Inmigrantes/estadística & datos numéricos , Femenino , Florida , Conocimientos, Actitudes y Práctica en Salud , Hispánicos o Latinos/etnología , Humanos , Entrevistas como Asunto , Voluntad en Vida/etnología , Voluntad en Vida/estadística & datos numéricos , México/etnología , Persona de Mediana Edad , Neoplasias/etnología , Apoderado/estadística & datos numéricos , Puerto Rico/etnología , Adulto JovenRESUMEN
Anopheles aquasalis larvae are salt water tolerant, preferring concentrations between 10 and 20 parts per thousand (ppt). The larvicidal efficacy of two formulations of Bacillus thuringiensis var. israelensis (Vectobac-12AS and Bactivec), was investigated against An. aquasalis at salinities of 0, 10, and 20 ppt. A probit analysis was used to calculate the lethal concentrations (LC50 and LC95) for each product at each salinity. The LC50 and LC95 were higher for Bactivec than Vectobac-12AS, and for Bactivec, the LC50 and LC95 increased with salinity. Vectobac-12AS should thus be preferred to Bactivec for An. aquasalis control, especially in saline breeding habitats.
Asunto(s)
Anopheles , Bacillus thuringiensis , Larva , Control Biológico de Vectores/métodos , Animales , Dosificación Letal Mediana , Cloruro de SodioRESUMEN
Extracts of propolis samples collected in Brazil and Bulgaria were assayed against four Leishmania species - Leishmania amazonensis, L. braziliensis, L. chagasi from the New World, and L. major from the Old World - associated to different clinical forms of leishmaniasis. The composition of the extracts has been previously characterized by high temperature high resolution gas chromatography coupled to mass spectrometry. Considering the chemical differences among the extracts and the behavior of the parasites, it was observed significant differences in the leishmanicidal activities with IC50/1 day values in the range of 2.8 to 229.3 µg/ml . An overall analysis showed that for all the species evaluated, Bulgarian extracts were more active than the ethanol Brazilian extract. As the assayed propolis extracts have their chemical composition determined it merits further investigation the effect of individual components or their combinations on each Leishmania species
Asunto(s)
Animales , Anopheles , Bacillus thuringiensis , Larva , Control Biológico de Vectores/métodos , Cloruro de SodioRESUMEN
Anopheles aquasalis is the main malaria vector in Sucre State, Venezuela. The larvae of this species are saltwater tolerant. The effects of different concentrations of salt on oviposition preference and egg survival were studied under laboratory conditions. Choice experiments with salt concentrations of 0, 10, 20, 30, and 40% in bottled water were set up for individual adult females and the number of eggs laid in each salt concentration was noted. Egg survival, as inferred by the number of hatched larvae also was determined for each salt concentration. Females preferred to oviposit in freshwater and rejected water salt concentrations of 40%, but they were neither attracted nor repelled by water with 10-30% of salt. Eggs hatched more quickly in the lower salt concentrations, but egg survival was not affected by salt concentrations of up to 20%. Thus, female oviposition preference in An. aquasalis determines egg survival.
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Anopheles/fisiología , Malaria/transmisión , Oviposición/fisiología , Animales , Anopheles/parasitología , Femenino , Insectos Vectores/parasitología , Insectos Vectores/fisiología , Larva/fisiología , Óvulo/fisiologíaRESUMEN
Arrythmogenic right ventricular dysplasia (ARVD) is an autosomal dominant inherited cardiomyopathy with incomplete penetrance and variable expressivity. Recently, the gene was mapped to 14q23-24. It is being increasingly investigated as a major cause of sudden death at a young age. Anterior polar cataract (APC) is a rare hereditary form of lens opacity. The locus for an APC gene was located tentatively on 14q24qter. We describe a patient with a severe form of ARVD in whom asymptomatic APC was detected by an ophthalmologic examination. His sister had ARVD and similar cataracts. Parents were second cousins but were healthy. This is the first report of possible autosomal recessive inheritance of ARVD. This is also the first time that the combination of ARVD and APC is reported. Three possibilities may explain this concurrence: pleiotropy, contiguous gene syndrome, or coincidence. Our findings suggest placement of an APC gene at 14q23-24.
Asunto(s)
Displasia Ventricular Derecha Arritmogénica/complicaciones , Catarata/complicaciones , Adulto , Displasia Ventricular Derecha Arritmogénica/genética , Catarata/genética , Cromosomas Humanos Par 14/genética , Consanguinidad , Femenino , Genes Recesivos , Humanos , MasculinoAsunto(s)
Bloqueadores de los Canales de Calcio/farmacología , Nodo Sinoatrial/efectos de los fármacos , Vasodilatadores/farmacología , Verapamilo/farmacología , Adulto , Sistema Nervioso Autónomo/fisiopatología , Electrocardiografía , Humanos , Masculino , Nodo Sinoatrial/fisiopatología , Vasodilatadores/administración & dosificación , Vasodilatadores/efectos adversosRESUMEN
Es presentado un paciente de 25 anos de edad con disfuncioon del nodulo sinusual debia a hipertonia vagal, estudiando con la tecnica de estimulacion auricular transesogafica. Las respuesta a la administracion de atropina fue un incremento de la frecuencia sinusal sobre el valor minimo normal establecido y una preservacion de la conduccion auriculo-ventricular a una frecuencia que previamente habia mostrado fenomeno de Wenckebach. La administracion intravenosa de verapamil mostro una inesperada reaccion. El tiempo de recuperacion del nodulo sinusal corregido regreso al valor normal a la misma frecuencia de estimulacion utilizada en el estudio control Otra interesante observacion fue el desplazamiento del bloqueo de 2o. grado tipo Wanckebach a una frecuencia de estimulacion mas alta. La respuesta usual a la administracion de verapamil es el empeoramiento de la conduccion en aquellas estructuras y no su mejoria. Estos hallazgos sugieren en este paciente la predominancia de los efectos indirectos del verapamil sobre la accion depresora de esta droga
Asunto(s)
Adulto , Humanos , Masculino , Frecuencia Cardíaca , Nodo Sinoatrial , Verapamilo , ElectrocardiografíaRESUMEN
Es presentado un paciente de 25 anos de edad con disfuncioon del nodulo sinusual debia a hipertonia vagal, estudiando con la tecnica de estimulacion auricular transesogafica. Las respuesta a la administracion de atropina fue un incremento de la frecuencia sinusal sobre el valor minimo normal establecido y una preservacion de la conduccion auriculo-ventricular a una frecuencia que previamente habia mostrado fenomeno de Wenckebach. La administracion intravenosa de verapamil mostro una inesperada reaccion. El tiempo de recuperacion del nodulo sinusal corregido regreso al valor normal a la misma frecuencia de estimulacion utilizada en el estudio control Otra interesante observacion fue el desplazamiento del bloqueo de 2o. grado tipo Wanckebach a una frecuencia de estimulacion mas alta. La respuesta usual a la administracion de verapamil es el empeoramiento de la conduccion en aquellas estructuras y no su mejoria. Estos hallazgos sugieren en este paciente la predominancia de los efectos indirectos del verapamil sobre la accion depresora de esta droga