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1.
J Clin Child Adolesc Psychol ; 53(3): 444-459, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38270592

RESUMEN

OBJECTIVE: We sought to explore if specific domains of emotion dysregulation (emotion regulation [EREG], emotional reactivity/lability [EREL], emotion recognition/understanding [ERU], and callous-unemotional [CU] behaviors) were uniquely associated with diagnostic classifications. METHOD: This study utilized a multimodal (parent/teacher [P/T] reports and behavioral observations) approach to examine emotion dysregulation in a sample of young children (68.7% boys; mean age = 5.47, SD = 0.77, 81.4% Latinx) with attention-deficit/hyperactivity disorder (ADHD Only; n = 46), ADHD + disruptive behavior disorders (ADHD+DBD; n = 129), and typically developing (TD) children (n = 148). RESULTS: All three diagnostic groups were significantly different from one another on P/T reports of EREG, EREL and CU. For the ADHD+DBD group, P/T reported worse EREG and EREL, and higher mean scores of CU, compared to both ADHD Only and TD groups. The ADHD+DBD group also performed significantly worse than the TD group (but not the ADHD Only group) on observed measures of EREG, EREL and ERU. P/T reported EREG, EREL and CU for the ADHD Only group were significantly worse than the TD group. Using multinomial logistic regression, P/T reported EREG, EREL, and CU were significantly associated with diagnostic status above and beyond observed measures of emotion dysregulation. The model successfully classified children with ADHD+DBD (91.3%) and TD (95.9%); however, children in the ADHD Only group were correctly identified only 45.7% of time. CONCLUSION: Our findings suggest that measures of emotion dysregulation may be particularly helpful in correctly identifying children with ADHD+DBD, but not necessarily children with ADHD Only.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad , Déficit de la Atención y Trastornos de Conducta Disruptiva , Regulación Emocional , Humanos , Masculino , Femenino , Trastorno por Déficit de Atención con Hiperactividad/psicología , Déficit de la Atención y Trastornos de Conducta Disruptiva/psicología , Preescolar , Niño , Emociones , Síntomas Afectivos/psicología
2.
Curr Issues Mol Biol ; 45(10): 8255-8276, 2023 Oct 11.
Artículo en Inglés | MEDLINE | ID: mdl-37886964

RESUMEN

Hepatitis C virus (HCV) infection is a worldwide public health problem. Chronic infection with HCV can lead to liver cirrhosis or cancer. Although some immune-competent individuals can clear the virus, others develop chronic HCV disease due to viral mutations or an impaired immune response. IFNs type I and III and the signal transduction induced by them are essential for a proper antiviral effect. Research on the viral cycle and immune escape mechanisms has formed the basis of therapeutic strategies to achieve a sustained virological response (SVR). The first therapies were based on IFNα; then, IFNα plus ribavirin (IFN-RBV); and then, pegylated-IFNα-RBV (PEGIFNα-RIV) to improve cytokine pharmacokinetics. However, the maximum SVR was 60%, and several significant side effects were observed, decreasing patients' treatment adherence. The development of direct-acting antivirals (DAAs) significantly enhanced the SVR (>90%), and the compounds were able to inhibit HCV replication without significant side effects, even in paediatric populations. The management of coinfected HBV-HCV and HCV-HIV patients has also improved based on DAA and PEG-IFNα-RBV (HBV-HCV). CD4 cells are crucial for an effective antiviral response. The IFNλ3, IL28B, TNF-α, IL-10, TLR-3, and TLR-9 gene polymorphisms are involved in viral clearance, therapeutic responses, and hepatic pathologies. Future research should focus on searching for strategies to circumvent resistance-associated substitution (RAS) to DAAs, develop new therapeutic schemes for different medical conditions, including organ transplant, and develop vaccines for long-lasting cellular and humoral responses with cross-protection against different HCV genotypes. The goal is to minimise the probability of HCV infection, HCV chronicity and hepatic carcinoma.

3.
Antimicrob Agents Chemother ; 67(2): e0068622, 2023 02 16.
Artículo en Inglés | MEDLINE | ID: mdl-36688672

RESUMEN

Procedures such as solid-organ transplants and cancer treatments can leave many patients in an immunocompromised state. This leads to their increased susceptibility to opportunistic diseases such as fungal infections. Mucormycosis infections are continually emerging and pose a serious threat to immunocompromised patients. Recently there has been a sharp increase in mucormycosis cases as a secondary infection in patients battling severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections. Mucorales fungi are notorious for presenting resistance to most antifungal drugs. The absence of effective means to treat these infections results in mortality rates approaching 100% in cases of disseminated infection. One of the most effective antifungal drug classes currently available is the echinocandins. Echinocandins seem to be efficacious in the treatment of many other fungal infections. Unfortunately, susceptibility testing has found that echinocandins have little to no effect on Mucorales fungi. In this study, we found that the model Mucorales Mucor circinelloides genome carries three copies of the genes encoding the echinocandin target protein ß-(1,3)-d-glucan synthase (fksA, fksB, and fksC). Interestingly, we found that exposing M. circinelloides to micafungin significantly increased the expression of the fksA and fksB genes, resulting in an increased accumulation of ß-(1,3)-d-glucan on the cell walls. However, this overexpression of the fks genes is not directly connected to the intrinsic resistance. Subsequent investigation discovered that the serine/threonine phosphatase calcineurin regulates the expression of fksA and fksB, and the deletion of calcineurin results in a decrease in expression of all three fks genes. Deletion of calcineurin also results in a lower minimum effective concentration (MEC) of micafungin. In addition, we found that duplication of the fks gene is also responsible for the intrinsic resistance, in which lack of either fksA or fksB led a lower MEC of micafungin. Together, these findings demonstrate that calcineurin and fks gene duplication contribute to the intrinsic resistance to micafungin we observe in M. circinelloides.


Asunto(s)
COVID-19 , Mucormicosis , Micosis , Humanos , Micafungina/farmacología , Micafungina/uso terapéutico , Antifúngicos/farmacología , Antifúngicos/uso terapéutico , Mucormicosis/tratamiento farmacológico , Mucormicosis/microbiología , Calcineurina/genética , Calcineurina/farmacología , SARS-CoV-2 , Mucor/genética , Equinocandinas/farmacología , Equinocandinas/uso terapéutico , Micosis/tratamiento farmacológico , Serina , Farmacorresistencia Fúngica/genética
4.
Chemistry ; 29(50): e202301604, 2023 Sep 06.
Artículo en Inglés | MEDLINE | ID: mdl-37367388

RESUMEN

Graphene oxide (GO) is a 2D nanomaterial with unique chemistry due to the combination of sp2 hybridization and oxygen functional groups (OFGs) even in single layer. OFGs play a fundamental role in the chemical functionalization of GO to produce GO-based materials for diverse applications. However, traditional strategies that employ epoxides, alcohols, and carboxylic acids suffer from low control and undesirable side reactions, including by-product formation and GO reduction. Thiol-ene "click" reaction offers a promising and versatile chemical approach for the alkene functionalization (-C=C-) of GO, providing orthogonality, stereoselectivity, regioselectivity, and high yields while reducing by-products. This review examines the chemical functionalization of GO via thiol-ene "click" reactions, providing insights into the underlying reaction mechanisms, including the role of radical or base catalysts in triggering the reaction. We discuss the "how" and "where" the reaction takes place on GO, the strategies to avoid unwanted side reactions, such as GO reduction and by-product formation. We anticipate that multi-functionalization of GO via the alkene groups will enhance GO physicochemical properties while preserving its intrinsic chemistry.

5.
Phys Chem Chem Phys ; 25(31): 20794-20807, 2023 Aug 09.
Artículo en Inglés | MEDLINE | ID: mdl-37465860

RESUMEN

Foam-like NiMo coatings were produced from an inexpensive mixture of Ni, Al, and Mo powders via atmospheric plasma spraying. The coatings were deposited onto stainless-steel meshes forming a highly porous network mainly composed of nanostructured Ni and highly active Ni4Mo. High material loading (200 mg cm-2) with large surface area (1769 cm2 per cm2) was achieved without compromising the foam-like characteristics. The coatings exhibited excellent activity towards both hydrogen evolution (HER) and oxygen evolution (OER) reactions in alkaline media. The HER active coating required an overpotential of 42 mV to reach a current density of -50 mA cm-2 with minimum degradation after a 24 h chronoamperometry test at -10 mA cm-2. Theoretical simulations showed that several crystal surfaces of Ni4Mo exhibit near optimum hydrogen adsorption energies and improved water dissociation that benefit the HER activity. The OER active coating also consisting of nanostructured Ni and Ni4Mo required only 310 mV to achieve a current density of 50 mA cm-2. The OER activity was maintained even after 48 h of continuous operation. We envisage that the development of scalable production techniques for Ni4Mo alloys will greatly benefit its usage in commercial alkaline water electrolysers.

6.
Rev Esp Enferm Dig ; 115(11): 673-674, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37350656

RESUMEN

We present the case of a 70-year-old woman with a history of transanal resection of rectal melanoma who presented with obstructive jaundice. She underwent complementary tests and was diagnosed with metastasis of melanoma at ampullary level. We consider this to be an interesting case given its unusual nature, as well as its difficult diagnostic and therapeutic management.


Asunto(s)
Procedimientos Quirúrgicos del Sistema Biliar , Melanoma , Neoplasias del Recto , Femenino , Humanos , Anciano , Melanoma/diagnóstico por imagen , Melanoma/cirugía , Neoplasias del Recto/diagnóstico por imagen , Neoplasias del Recto/cirugía , Endosonografía , Pacientes
7.
Curr Issues Mol Biol ; 45(1): 33-50, 2022 Dec 21.
Artículo en Inglés | MEDLINE | ID: mdl-36661489

RESUMEN

SARS-CoV-2 causes the complex and heterogeneous illness known as COVID-19. The disease primarily affects the respiratory system but can quickly become systemic, harming multiple organs and leading to long-lasting sequelae in some patients. Most infected individuals are asymptomatic or present mild symptoms. Antibodies, complement, and immune cells can efficiently eliminate the virus. However, 20% of individuals develop severe respiratory illness and multiple organ failure. Virus replication has been described in several organs in patients who died from COVID-19, suggesting a compromised immune response. Immunodeficiency and autoimmunity are responsible for this impairment and facilitate viral escape. Mutations in IFN signal transduction and T cell activation are responsible for the inadequate response in young individuals. Autoantibodies are accountable for secondary immunodeficiency in patients with severe infection or prolonged COVID-19. Antibodies against cytokines (interferons α, γ and ω, IL1ß, IL6, IL10, IL-17, IL21), chemokines, complement, nuclear proteins and DNA, anticardiolipin, and several extracellular proteins have been reported. The type and titer of autoantibodies depend on age and gender. Organ-specific autoantibodies have been described in prolonged COVID-19. Their role in the disease is under study. Autoimmunity and immunodeficiency should be screened as risk factors for severe or prolonged COVID-19.

8.
J Clin Child Adolesc Psychol ; 51(2): 170-182, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-31618114

RESUMEN

Callous-unemotional (CU) traits are important characteristics for identifying severe patterns of conduct problems (CP). The current study focused on (a) identifying subgroups of young children displaying a combination of CP and CU behaviors and (b) examining the extent to which executive functioning (EF) and emotion regulation (ER) are associated with CU behaviors. Participants included 249 preschoolers (N = 249, 78% boys, Mage = 4.95 years; 81% Latino/Hispanic) referred to treatment because of externalizing behavior problems. CU behaviors and CP were measured via a combination of teacher/parent rating scales. A multimethod approach was used to measure EF and ER including parent/teacher rating scales, neuropsychological, and observational tasks. Poorer ER as rated by parents/teachers and observed was associated with greater levels of CU behaviors. Latent profile analyses identified three subgroups of children displaying (a) low CU/low CP, (b) moderate CU/moderate CP, and (c) high CU/high CP. Children in the high CU/high-CP group were rated as having significantly poorer rated ER compared to all other groups and poorer observed ER compared to the low-CU/low-CP group. Exploratory analyses found that children in the high-CU/high-CP group displayed marginally lower levels of rated ER but significantly better EF performance on standardized neuropsychological tasks compared to children in a low-CU/high-CP group.Children with higher levels of reported CU behaviors and CP display poorer ER yet may display relatively better EF performance compared to children with lower levels of CU behaviors and CP.


Asunto(s)
Trastorno de la Conducta , Regulación Emocional , Problema de Conducta , Preescolar , Trastorno de la Conducta/psicología , Emociones/fisiología , Femenino , Humanos , Masculino , Problema de Conducta/psicología
9.
Scand J Immunol ; 93(6): e13043, 2021 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-33783027

RESUMEN

Coronavirus infections are frequent viral infections in several species. As soon as the severe acute respiratory syndrome (SARS) appeared in the early 2000s, most of the research focused on pulmonary disease. However, disorders in immune response and organ dysfunctions have been documented. Elderly individuals with comorbidities exhibit worse outcomes in all the coronavirus that cause SARS. Disease severity in SARS-CoV-2 infection is related to severe inflammation and tissue injury, and effective immune response against the virus is still under analysis. ACE2 receptor expression and polymorphism, age, gender and immune genetics are factors that also play an essential role in patients' clinical features and immune responses and have been partially discussed. The present report aims to review the physiopathology of SARS-CoV-2 infection and propose new research topics to understand the complex mechanisms of viral infection and viral clearance.


Asunto(s)
COVID-19/inmunología , COVID-19/virología , Interacciones Huésped-Patógeno/inmunología , SARS-CoV-2/fisiología , Enzima Convertidora de Angiotensina 2/genética , Enzima Convertidora de Angiotensina 2/metabolismo , Biomarcadores , COVID-19/complicaciones , COVID-19/metabolismo , Síndrome de Liberación de Citoquinas/etiología , Síndrome de Liberación de Citoquinas/metabolismo , Citocinas/metabolismo , Susceptibilidad a Enfermedades/inmunología , Metabolismo Energético , Humanos , Inmunidad Innata , Mediadores de Inflamación/metabolismo , Subgrupos Linfocitarios/inmunología , Subgrupos Linfocitarios/metabolismo , Receptor de Angiotensina Tipo 2/metabolismo , Receptores Virales/metabolismo , Replicación Viral
10.
Exp Eye Res ; 210: 108715, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-34343570

RESUMEN

OBJECTIVES: Cone photoreceptor transplantation is a potential treatment for macular diseases. The optimal conditions for cone transplantation are poorly understood, partly because of the scarcity of cones in donor mice. To facilitate allogeneic cone photoreceptor transplantation studies in mice, we aimed to create and characterize a donor mouse model containing a cone-rich retina with a cone-specific enhanced green fluorescent protein (EGFP) reporter. METHODS: We generated OPN1LW-EGFP/NRL-/- mice by crossing NRL-/- and OPN1LW-EGFP mice. We characterized the anatomical phenotype of OPN1LW-EGFP/NRL-/- mice using multimodal confocal scanning laser ophthalmoscopy (cSLO) imaging, immunohistology, and transmission electron microscopy. We evaluated retinal function using electroretinography (ERG), including 465 and 525 nm chromatic stimuli. Retinal sheets and cell suspensions from OPN1LW-EGFP/NRL-/- mice were transplanted subretinally into immunodeficient Rd1 mice. RESULTS: OPN1LW-EGFP/NRL-/- retinas were enriched with OPN1LW-EGFP+ and S-opsin+ cone photoreceptors in a dorsal-ventral distribution gradient. Cone photoreceptors co-expressing OPNL1W-EGFP and S-opsin significantly increased in OPN1LW-EGFP/NRL-/- compared to OPN1LW-EGFP mice. Temporal dynamics of rosette formation in the OPN1LW-EGFP/NRL-/- were similar as the NRL-/- with peak formation at P15. Rosettes formed preferentially in the ventral retina. The outer retina in P35 OPN1LW-EGFP/NRL-/- was thinner than NRL-/- controls. The OPN1LW-EGFP/NRL-/- ERG response amplitudes to 465 nm stimulation were similar to, but to 535 nm stimulation were lower than, NRL-/- controls. Three months after transplantation, the suspension grafts showed greater macroscopic degradation than sheet grafts. Retinal sheet grafts from OPN1LW-EGFP/NRL-/- mice showed greater S-opsin + cone survival than suspension grafts from the same strain. CONCLUSIONS: OPN1LW-EGFP/NRL-/- retinae were enriched with S-opsin+ photoreceptors. Sustained expression of EGFP facilitated the longitudinal tracking of transplanted donor cells. Transplantation of cone-rich retinal grafts harvested prior to peak rosette formation survived and differentiated into cone photoreceptor subtypes. Photoreceptor sheet transplantation may promote greater macroscopic graft integrity and S-opsin+ cone survival than cell suspension transplantation, although the mechanism underlying this observation is unclear at present. This novel cone-rich reporter mouse strain may be useful to study the influence of graft structure on cone survival.


Asunto(s)
Trasplante de Células , Células Fotorreceptoras Retinianas Conos/trasplante , Degeneración Retiniana/cirugía , Animales , Línea Celular , Opsinas de los Conos/metabolismo , Electrorretinografía , Proteínas Fluorescentes Verdes/metabolismo , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Ratones Transgénicos , Microscopía Electrónica de Transmisión , Oftalmoscopía , Retina/metabolismo , Retina/fisiopatología , Degeneración Retiniana/metabolismo , Degeneración Retiniana/fisiopatología , Opsinas de Bastones/metabolismo , Donantes de Tejidos , Trasplante Homólogo
11.
Appl Opt ; 60(5): 1349-1356, 2021 Feb 10.
Artículo en Inglés | MEDLINE | ID: mdl-33690578

RESUMEN

This paper describes an optical measurement system that is capable of simultaneously measuring a three-dimensional shape and circumferential train in a thin-walled cylinder. We used the fringe projection technique to obtain a three-dimensional shape and out-of-plane displacements, which were then associated with out-of-plane strain. Although 360 deg profilometry is not new, we propose an experimental setup that requires only one camera and one projector, since two mirrors are located at 120 deg with respect to the y-z plane of the reference system to obtain three distinct, complementary views of the sample studied. A sequence of images of the fringe pattern was captured and processed using the phase-shifting method, while the out-of-plane data were determined by comparing the specimen before and after deformation. A latex tube filled with liquid was used to perform mechanical testing. The cylinder was subjected to internal hydrostatic pressure that caused deformation. Experimental results were compared with analytical solutions, and the results show that out-of-plane strains can be accurately measured using the proposed method.

12.
Gac Med Mex ; 156(4): 273-278, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32831336

RESUMEN

BACKGROUND: Influenza virus infection is often complicated by a bacterial infection, with this coinfection causing severe pneumonia. If not timely treated, the disease can cause death. OBJECTIVE: To demonstrate, in animal models, that coinfection with influenza virus and bacteria that affect the respiratory tract causes multisystemic damage. METHOD: Six groups of mice were formed: a control group, one infected with the influenza virus, two infected with bacteria: Haemophilus influenzae and Streptococcus pneumoniae, respectively; and two co-infected with influenza virus and Haemophilus influenzae or Streptococcus pneumoniae, respectively. RESULTS: Of the six groups of mice, only the group co-infected with influenza virus and Streptococcus pneumoniae showed damage to thoracic and abdominal organs. A decrease in serum cytokine levels was found in all study groups, which was more pronounced in the co-infected mice. CONCLUSIONS: The groups of mice infected with Streptococcus pneumoniae or influenza virus alone showed no damage, which indicates that coexistence of these infections caused the damage in the group of co-infected mice.


ANTECEDENTES: La infección por el virus de la influenza con frecuencia se complica con una infección bacteriana, coinfección que provoca cuadros graves de neumonía, la cual puede ocasionar la muerte si no es tratada en forma oportuna. OBJETIVO: Demostrar en modelos animales que la coinfección por el virus de la influenza y bacterias que afectan el tracto respiratorio ocasiona daño multisistémico. MÉTODO: Se formaron seis grupos de ratones: un grupo control, uno infectado de virus de la influenza, dos infectados de bacterias: Haemophilus influenzae y Streptococcus pneumoniae, respectivamente; y dos coinfectados de virus de la influenza y Haemophilus influenzae y Streptococcus pneumoniae, respectivamente. RESULTADOS: De los seis grupos de ratones, solo en el grupo coinfectado de virus de la influenza y Streptococcus pneumoniae se observó daño en órganos torácicos y abdominales. En todos los grupos se encontró disminución de los niveles séricos de las citocinas, mayor en los ratones coinfectados. CONCLUSIONES: Los grupos de ratones infectados solo de Streptococcus pneumoniae o el virus de la influenza no presentaron daños, lo cual indica que la coexistencia de estas infecciones fue la que ocasionó el daño en el grupo de ratones coinfectados.


Asunto(s)
Infecciones por Haemophilus/fisiopatología , Infecciones por Orthomyxoviridae/fisiopatología , Infecciones Neumocócicas/fisiopatología , Animales , Coinfección/fisiopatología , Citocinas/sangre , Modelos Animales de Enfermedad , Infecciones por Haemophilus/microbiología , Masculino , Ratones , Ratones Endogámicos BALB C , Infecciones por Orthomyxoviridae/virología , Infecciones Neumocócicas/microbiología , Neumonía/microbiología , Neumonía/fisiopatología , Neumonía/virología , Streptococcus pneumoniae/aislamiento & purificación
13.
Inflammopharmacology ; 27(5): 1081-1089, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29748880

RESUMEN

Propolis has been extensively used to improve health and prevent inflammatory diseases. Different types of Cuban propolis (red, brown and yellow) have been documented. The purpose of this research was to investigate the cytotoxic effects of Cuban red propolis (CP) on MDA MB-231 cell line, since breast cancer is considered one of the most common causes of mortality among women. Antiproliferative and cytotoxic activity of CP against MDA MB-231 cells were determined by the 3-[4,5-dimethylth-iazol-2-yl]-2,5-diphenyl tetrazoliumbromide (MTT) and lactate dehydrogenase (LDH) assays. Apoptosis/necrosis, involvement of PI3K/Akt and ERK1/2 pathways, mitochondrial membrane potential and expression of genes were investigated. CP extract exhibited antiproliferative and cytotoxic effects on MDA MB-231 cells, what may be probably related to PI3K/Akt and ERK1/2 pathways. A decreased expression of apoptosis-related genes (TP53, CASP3, BAX and P21) was seen, whereas the expressions of BCL-2, BCL-XL, NOXA and PUMA were unaffected. CP extract induced mitochondrial dysfunction and LDH release, what indicated cell necrosis associated with reactive oxygen species production and decreased cell migration. Our findings provide a basis for future investigation of chemopreventive and/or therapeutic studies against apoptosis-resistant breast cancer, in animals and humans.


Asunto(s)
Neoplasias de la Mama/tratamiento farmacológico , Sistema de Señalización de MAP Quinasas/efectos de los fármacos , Potencial de la Membrana Mitocondrial/efectos de los fármacos , Fosfatidilinositol 3-Quinasas/metabolismo , Própolis/farmacología , Proteínas Proto-Oncogénicas c-akt/metabolismo , Especies Reactivas de Oxígeno/metabolismo , Apoptosis/efectos de los fármacos , Proteínas Reguladoras de la Apoptosis/metabolismo , Neoplasias de la Mama/metabolismo , Línea Celular Tumoral , Proliferación Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Femenino , Humanos , Transducción de Señal/efectos de los fármacos
14.
J Exp Child Psychol ; 166: 535-548, 2018 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-29096236

RESUMEN

The current study examined differences in working memory (WM) between monolingual and bilingual Hispanic/Latino preschoolers with disruptive behavior disorders (DBDs). A total of 149 children (Mage = 5.10 years, SD = 0.53; 76% male) with elevated levels of DBDs, as indicated by their parents or teachers, were recruited to participate in an 8-week summer program prior to the start of kindergarten (Summer Treatment Program for Pre-Kindergarteners). Prior to the start of treatment, parents completed several measures about their children's behavior and executive function, and children were administered two subtests of the Automated Working Memory Assessment to examine their current WM capabilities. After controlling for demographic variables (i.e., age, sex, socioeconomic status, IQ, and diagnostic status), no significant differences were observed between bilingual and monolingual children in verbal WM performance (ß = .03, p > .05). However, children who were bilingual did perform better than monolinguals on spatial WM tasks (ß = .23, p < .01). Finally, parent reports of WM corroborated these findings such that bilingual children were reported as having fewer WM problems by parents (ß = -.19, p < .05) and teachers (ß = -.22, p < .05). Whereas WM deficits are often found among children with DBDs, the current findings suggest that bilingualism may serve as a protective factor for preschoolers with DBDs.


Asunto(s)
Déficit de la Atención y Trastornos de Conducta Disruptiva/etnología , Déficit de la Atención y Trastornos de Conducta Disruptiva/psicología , Hispánicos o Latinos/psicología , Memoria a Corto Plazo , Multilingüismo , Niño , Preescolar , Función Ejecutiva , Femenino , Humanos , Masculino , Clase Social , Aprendizaje Espacial , Memoria Espacial , Aprendizaje Verbal , Percepción Visual
15.
Child Psychiatry Hum Dev ; 49(5): 699-708, 2018 10.
Artículo en Inglés | MEDLINE | ID: mdl-29460189

RESUMEN

This study examined the role of callous-unemotional (CU) traits in preschoolers with externalizing behavior problems (EBP) and their response to time-out (TO). One hundred ninety preschoolers (76% boys, Mage = 4.92) with at-risk/clinically elevated levels of EBP participated in an 8-week summer treatment program (STP-PreK). Total number of minutes spent daily in TO for intentional aggression (IA) and repeated non-compliance (RNC) were recorded during the initial (T1) and final (T2) phases of the STP-PreK. After accounting for severity of EBP and levels of TO at T1, higher levels of CU traits predicted greater total levels of TO at T2. An interaction also emerged between symptoms of oppositional defiant disorder (ODD) and CU traits in predicting IA. Specifically, greater ODD symptoms predicted fewer number of IA related TO at T2, but only for children with low CU traits. Implications for treatment are discussed.


Asunto(s)
Agresión/psicología , Problema de Conducta/psicología , Déficit de la Atención y Trastornos de Conducta Disruptiva/psicología , Control de la Conducta/métodos , Control de la Conducta/psicología , Terapia Conductista/métodos , Preescolar , Trastorno de la Conducta/psicología , Emociones , Femenino , Humanos , Masculino , Escalas de Valoración Psiquiátrica , Autocontrol/psicología , Ajuste Social
16.
J Clin Child Adolesc Psychol ; 45(2): 201-14, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-25587855

RESUMEN

The goal of this study was to examine the extent to which preschoolers with externalizing behavior problems (EBP) can identify behaviors indicative of callous-unemotional (CU) traits among their peers. Participants for this study included 86 preschool children (69% boys; Mage = 5.07 years) with at-risk or clinically elevated levels of EBP who were attending a summer treatment camp. Data collected from the children, their peers, and the counselors who worked at the summer camp examined preschoolers' social preference, likability, and behaviors indicative of CU. Parents and preschool teachers also reported on children's CU traits and severity of behavioral impairment, as well as school readiness. Peer nominations of CU traits showed (a) excellent factor structure as evidenced by clear CU items (e.g., "don't feel bad when they do something wrong") versus more prosocial items ("share," "cooperate"); (b) moderate construct validity when compared to counselor reports of the CU factor as well as preschool teacher reported ratings of CU traits and severity of behavioral impairment; and (c) good utility as evidenced by associations with peer and counselor rated social preference, likability, and school readiness measures as rated by both parents and preschool teachers. These findings indicate that as early as preschool, children with EBP can identify peers who engage in behaviors indicative of CU traits, which have significant implications for children's social status and overall school readiness.


Asunto(s)
Trastorno de la Conducta/psicología , Emociones/fisiología , Empatía , Relaciones Interpersonales , Problema de Conducta/psicología , Trastorno de Personalidad Antisocial/psicología , Niño , Preescolar , Femenino , Humanos , Masculino , Padres/educación , Grupo Paritario , Instituciones Académicas , Medio Social
17.
Invest Clin ; 57(2): 176-186, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28429897

RESUMEN

ADAM33 is a metalloproteinase important in the extracellular matrix for tissue remodeling, and, consequently, in asthma and chronic obstructive pulmonary disease (COPD). Several polymorphisms of the ADAM33 gene have been associated with enzyme activity. One of the most studied polymorphisms is V4, cytosine for guanine in the 3 'UTR region, and T1, adenine for guanine in the exon 19 of the gen. The aim of this study was to ascertain the possible association among single polymorphisms of ADAM33, V4 and T1, in Venezuelan patients with asthma or COPD. The polymorphisms V4 and T1 were analyzed in 303 individuals (103 asth- matic, 100 COPD and 100 controls) by PCR-RFLP (polymerase chain reaction and restriction fragment length polymorphisms). There was a significant difference (P<0.05) in the frequency of ADAM33 V4 polymorphism in both, asthmatic and COPD patients groups, as compared to controls. No significant differences (P=0.4) were found for T1 polymorphism. However, there were significant differences (P

Asunto(s)
Proteínas ADAM/genética , Asma/genética , Polimorfismo de Nucleótido Simple , Enfermedad Pulmonar Obstructiva Crónica/genética , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Venezuela
18.
West J Emerg Med ; 25(4): 624-633, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-39028249

RESUMEN

Introduction: Patients who stay in the emergency department (ED) for prolonged periods of time require verification of home medications, a process known as medication reconciliation. The complex nature of medication reconciliation can lead to adverse events and staff dissatisfaction. A multidisciplinary team was formed to improve accuracy, timing, and staff satisfaction with the medication reconciliation process. Methods: Between November 2021-January 2022, stakeholders were surveyed to identify gaps in the medication reconciliation process. This project implemented education on role-specific tasks, as well as a "Let's chat!" huddle, bringing together the entire care team to perform medication reconciliation. We used real-time evaluations by frontline staff to evaluate effectiveness during plan- do-study-act cycles and obtain feedback. Following the implementation period, stakeholders completed the post-intervention survey between June-July 2022, using a 4-point Likert scale (0 = very dissatisfied to 3 = very satisfied). We calculated the change in staff satisfaction from pre-intervention to post-intervention. Differences in proportions and 95% confidence intervals are reported. This study adhered to the Standards for Quality Improvement Reporting Excellence (SQUIRE 2.0) and followed the Lean Six Sigma rapid cycle process improvement (define-measure-analyze-improve-control). Results: A total of 111 front-line ED staff (physicians, nurse practitioners, physician assistants, pharmacists, nurses) completed the pre-intervention survey (of 350 ED staff, corresponding to a 31.7% response rate), and 89 stakeholders completed the post-intervention survey (a 25.4% response rate). Subjective feedback from staff identifying causes of low satisfaction with the initial process included the following: complexity of process; unclear delineation of staff roles; time burden to completion; high patient volume; and lack of standardized communication of task completion. Overall satisfaction improved after the intervention. The greatest improvement was seen in the correct medication (difference 20.7%, confidence interval [CI] 6.3-33.9%, P < 0.01), correct dose (25.6%, CI 11.4-38.6%, P < 0.001) and time last taken (24.5%, CI 11.4-37.0%, P < 0.001). Conclusion: There is a steep learning curve to educate multidisciplinary staff on a new process and implement the associated changes. With goals to impact the safety of our patients and reduce negative outcomes, engagement and awareness of the team involved in the medication reconciliation process is critical to improve staff satisfaction.


Asunto(s)
Servicio de Urgencia en Hospital , Conciliación de Medicamentos , Grupo de Atención al Paciente , Mejoramiento de la Calidad , Humanos , Satisfacción en el Trabajo , Encuestas y Cuestionarios , Actitud del Personal de Salud
19.
Antibodies (Basel) ; 13(2)2024 May 11.
Artículo en Inglés | MEDLINE | ID: mdl-38804309

RESUMEN

SARS-CoV-2 vaccines have contributed to attenuating the burden of the COVID-19 pandemic by promoting the development of effective immune responses, thus reducing the spread and severity of the pandemic. A clinical trial with the Sputnik-V vaccine was conducted in Venezuela from December 2020 to July 2021. The aim of this study was to explore the antibody reactivity of vaccinated individuals towards different regions of the spike protein (S). Neutralizing antibody (NAb) activity was assessed using a commercial surrogate assay, detecting NAbs against the receptor-binding domain (RBD), and a plaque reduction neutralization test. NAb levels were correlated with the reactivity of the antibodies to the spike regions over time. The presence of Abs against nucleoprotein was also determined to rule out the effect of exposure to the virus during the clinical trial in the serological response. A high serological reactivity was observed to S and specifically to S1 and the RBD. S2, although recognized with lower intensity by vaccinated individuals, was the subunit exhibiting the highest cross-reactivity in prepandemic sera. This study is in agreement with the high efficacy reported for the Sputnik V vaccine and shows that this vaccine is able to induce an immunity lasting for at least 180 days. The dissection of the Ab reactivity to different regions of S allowed us to identify the relevance of epitopes outside the RBD that are able to induce NAbs. This research may contribute to the understanding of vaccine immunity against SARS-CoV-2, which could contribute to the design of future vaccine strategies.

20.
J Interpers Violence ; 38(1-2): NP646-NP669, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-35531607

RESUMEN

Childhood trauma exposure, including witnessing or experiencing family violence, is associated with a variety of poor outcomes such as increased likelihood of psychopathology and high-risk behaviors across the lifespan. Early treatment may help to buffer these effects, but parents and youth display only moderate levels of agreement in reporting family violence, making it more difficult to identify children who have been exposed. Additionally, most studies on family violence reporting have focused primarily on small samples in specific high-risk populations, and little is known about the generalizability of these findings. Thus, the present study assessed concordance in family violence reporting and its correlates using the population-based, demographically diverse sample from the U.S. Adolescent Brain Cognitive Development (ABCD®) study. Participants were 10,532 children between 9 and 10 years old, and their parent or guardian, from 21 sites across the United States. Overall, 30% (N = 3119) of the sample reported family violence and most of those reports (N = 2629) had discordant violence reporting, meaning child- and parent-report did not correspond with each other. Multinomial logistic regression was used to assess the likelihood of participants belonging in one of the following groups: no violence reported, concordant violence reported, and discordant violence reported. Results indicated that Black or Non-Hispanic children, male children, and children with greater externalizing problems were more likely to report family violence, and parents with lower levels of education and income were more likely to report family violence. These findings likely reflect differences in distribution of risk factors among racial and ethnic minoritized individuals including increased parenting stress and decreased access to mental health treatment. Among those reporting violence, Hispanic children and children with less externalizing problems were more likely to be in the discordant group. Findings suggest that both parent and child reports are needed to assess violence and screen for appropriate services.


Asunto(s)
Violencia Doméstica , Padres , Adolescente , Masculino , Humanos , Estados Unidos , Niño , Padres/psicología , Relaciones Padres-Hijo , Cognición , Encéfalo
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