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1.
Cell ; 161(6): 1293-1305, 2015 Jun 04.
Artículo en Inglés | MEDLINE | ID: mdl-26046437

RESUMEN

Dendritic cells (DCs) play a critical role in the immune response to viral infection through the facilitation of cell-intrinsic antiviral activity and the activation of adaptive immunity. HIV-1 infection of DCs triggers an IRF3-dependent innate immune response, which requires the activity of cyclic GAMP synthase (cGAS). We report the results of a targeted RNAi screen utilizing primary human monocyte-derived DCs (MDDCs) to identify immune regulators that directly interface with HIV-1-encoded features to initiate this innate response. Polyglutamine binding protein 1 (PQBP1) emerged as a strong candidate through this analysis. We found that PQBP1 directly binds to reverse-transcribed HIV-1 DNA and interacts with cGAS to initiate an IRF3-dependent innate response. MDDCs derived from Renpenning syndrome patients, who harbor mutations in the PQBP1 locus, possess a severely attenuated innate immune response to HIV-1 challenge, underscoring the role of PQBP1 as a proximal innate sensor of a HIV-1 infection.


Asunto(s)
Proteínas Portadoras/metabolismo , VIH-1/inmunología , Inmunidad Innata , Proteínas Nucleares/metabolismo , Nucleotidiltransferasas/metabolismo , Secuencia de Bases , Línea Celular , Parálisis Cerebral/inmunología , ADN Viral/genética , Proteínas de Unión al ADN , VIH-1/fisiología , Humanos , Discapacidad Intelectual Ligada al Cromosoma X/inmunología , Datos de Secuencia Molecular
2.
Pediatr Hematol Oncol ; 38(2): 147-153, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33000978

RESUMEN

Childhood cancer is a traumatic experience for survivors and their families. The experience of this disease affects survivors' and families' quality of life, even years after it occurs. The purpose of the present study was to assess if the caregivers' posttraumatic stress symptoms mediated the associations between survivors' posttraumatic stress symptoms and caregivers' quality of life, in a sample of 46 dyads of caregivers and childhood cancer survivors. Survivors and caregivers completed the PCL-5, and caregivers completed the WHOQOL-bref. Results showed that survivors' and caregivers' posttraumatic stress symptoms scores and caregivers' quality of life were associated. The caregivers' posttraumatic stress symptoms mediated the relationship between survivors' posttraumatic stress symptoms and caregivers' quality of life. Knowing posttraumatic stress symptoms direct and indirect effects on caregivers' quality of life contributes to understand their experience and to develop intervention strategies with this population.


Asunto(s)
Supervivientes de Cáncer/psicología , Cuidadores/psicología , Calidad de Vida/psicología , Trastornos por Estrés Postraumático/epidemiología , Adolescente , Adulto , Niño , Femenino , Humanos , Masculino , Trastornos por Estrés Postraumático/psicología , Adulto Joven
3.
Nature ; 479(7371): 135-8, 2011 Oct 16.
Artículo en Inglés | MEDLINE | ID: mdl-22002604

RESUMEN

Heterochromatin comprises tightly compacted repetitive regions of eukaryotic chromosomes. The inheritance of heterochromatin through mitosis requires RNA interference (RNAi), which guides histone modification during the DNA replication phase of the cell cycle. Here we show that the alternating arrangement of origins of replication and non-coding RNA in pericentromeric heterochromatin results in competition between transcription and replication in Schizosaccharomyces pombe. Co-transcriptional RNAi releases RNA polymerase II (Pol II), allowing completion of DNA replication by the leading strand DNA polymerase, and associated histone modifying enzymes that spread heterochromatin with the replication fork. In the absence of RNAi, stalled forks are repaired by homologous recombination without histone modification.


Asunto(s)
Replicación del ADN/fisiología , Silenciador del Gen , Heterocromatina/genética , Heterocromatina/metabolismo , Interferencia de ARN , ARN Polimerasa II/metabolismo , Schizosaccharomyces/genética , Centrómero/genética , Centrómero/metabolismo , Proteínas Cromosómicas no Histona/genética , Proteínas Cromosómicas no Histona/metabolismo , Daño del ADN , ADN Polimerasa Dirigida por ADN/metabolismo , Histonas/metabolismo , Recombinación Homóloga , Modelos Genéticos , Datos de Secuencia Molecular , ARN Interferente Pequeño/genética , ARN Interferente Pequeño/metabolismo , Origen de Réplica , Fase S , Proteínas de Schizosaccharomyces pombe/genética , Proteínas de Schizosaccharomyces pombe/metabolismo , Transcripción Genética
4.
EMBO J ; 31(1): 124-37, 2012 Jan 04.
Artículo en Inglés | MEDLINE | ID: mdl-21989386

RESUMEN

In Schizosaccharomyces pombe, DNA replication origins (ORIs) and meiotic recombination hotspots lack consensus sequences and show a bias towards mapping to large intergenic regions (IGRs). To explore whether this preference depended on underlying chromatin features, we have generated genome-wide nucleosome profiles during mitosis and meiosis. We have found that meiotic double-strand break sites (DSBs) colocalize with nucleosome-depleted regions (NDRs) and that large IGRs include clusters of NDRs that overlap with almost half of all DSBs. By contrast, ORIs do not colocalize with NDRs and they are regulated independently of DSBs. Physical relocation of NDRs at ectopic loci or modification of their genomic distribution during meiosis was paralleled by the generation of new DSB sites. Over 80% of all meiotic DSBs colocalize with NDRs that are also present during mitosis, indicating that the recombination pattern is largely dependent on constitutive properties of the genome and, to a lesser extent, on the transcriptional profile during meiosis. The organization of ORIs and of DSBs regions in S. pombe reveals similarities and differences relative to Saccharomyces cerevisiae.


Asunto(s)
Meiosis , Nucleosomas/metabolismo , Recombinación Genética , Origen de Réplica , Schizosaccharomyces/genética , Roturas del ADN de Doble Cadena , Genoma Fúngico , Schizosaccharomyces/metabolismo , Proteínas de Schizosaccharomyces pombe/genética , Proteínas de Schizosaccharomyces pombe/metabolismo
5.
J Virol ; 89(19): 9781-90, 2015 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-26178989

RESUMEN

UNLABELLED: The accessory HIV protein Vpu inhibits a number of cellular pathways that trigger host innate restriction mechanisms. HIV Vpu-mediated degradation of tetherin allows efficient particle release and hampers the activation of the NF-κB pathway thereby limiting the expression of proinflammatory genes. In addition, Vpu reduces cell surface expression of several cellular molecules such as newly synthesized CD4. However, the role of HIV Vpu in regulating the type 1 interferon response to viral infection by degradation of the interferon regulatory factor 3 (IRF3) has been subject of conflicting reports. We therefore systematically investigated the expression of IRF3 in primary CD4(+) T cells and macrophages infected with HIV at different time points. In addition, we also tested the ability of Vpu to interfere with innate immune signaling pathways such as the NF-κB and the IRF3 pathways. We report here that HIV Vpu failed to degrade IRF3 in infected primary cells. Moreover, we observed that HIV NL4.3 Vpu had no effect on IRF3-dependent gene expression in reporter assays. On the other hand, HIV NL4.3 Vpu downmodulated NF-κB-dependent transcription. Mutation of two serines (positions 52 and 56) involved in the binding of NL4.3 Vpu to the ßTrCP ubiquitin ligase abolishes its ability to inhibit NF-κB activity. Taken together, these results suggest that HIV Vpu regulates antiviral innate response in primary human cells by acting specifically on the NF-κB pathway. IMPORTANCE: HIV Vpu plays a pivotal role in enhancing HIV infection by counteraction of Tetherin. However, Vpu also regulates host response to HIV infection by hampering the type 1 interferon response. The molecular mechanism by which Vpu inhibits the interferon response is still controversial. Here we report that Vpu affects interferon expression by inhibiting NF-κB activity without affecting IRF3 levels or activity. These data suggest that Vpu facilitates HIV infection by regulating NF-κB transcription to levels sufficient for viral transcription while limiting cellular responses to infection.


Asunto(s)
Linfocitos T CD4-Positivos/inmunología , Regulación de la Expresión Génica/inmunología , VIH-1/inmunología , Proteínas del Virus de la Inmunodeficiencia Humana/metabolismo , FN-kappa B/metabolismo , Transducción de Señal/inmunología , Proteínas Reguladoras y Accesorias Virales/metabolismo , Linfocitos T CD4-Positivos/virología , Cartilla de ADN/genética , Citometría de Flujo , Proteínas Fluorescentes Verdes/metabolismo , Células HEK293 , VIH-1/metabolismo , Humanos , Immunoblotting , Factor 3 Regulador del Interferón/metabolismo , Luciferasas , Plásmidos/genética
6.
Ren Fail ; 38(9): 1383-1390, 2016 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27686135

RESUMEN

BACKGROUND: The relationship between personality and health is frequently studied in scientific research. This study investigated the clinical/biochemical course of kidney transplant patients based on personality traits. METHODS: A longitudinal study assessed 114 kidney transplant patients (men = 68 and women = 46) with an average age of 47.72 years (SD = 11.4). Personality was evaluated using the Brazilian Factorial Personality Inventory (BFP/Big Five Model). Clinical variables were analyzed based on patient charts (estimated glomerular filtration rate (eGFR), hypertension, acute rejection, infection, graft loss, and death). Personality types were assessed by hierarchical cluster analysis. RESULTS: Two groups with personality types were differentiated by psychological characteristics: Cluster 1 - average neuroticism, high surgency, agreeableness and conscientiousness, and low openness; Cluster 2 - high neuroticism, average surgency and agreeableness, average conscientiousness, and low openness. There was no statistically significant difference between the clusters in terms of hypertension, acute infection, graft loss, death, and Human Leukocyte Antigen (HLA) I and II panel reactive antibodies. eGFR was associated with the personality types. Cluster 2 was associated with a better renal function in the 9-month follow-up period after kidney transplantation. CONCLUSION: In this study, patients from Cluster 2 exhibited higher eGFR 9 months after the transplant procedure compared to those from Cluster 1. Monitoring these patients over a longer period may provide a better understanding of the relationship between personality traits and clinical course during the post-transplant period.


Asunto(s)
Fallo Renal Crónico/cirugía , Trasplante de Riñón/psicología , Personalidad , Adulto , Femenino , Estudios de Seguimiento , Tasa de Filtración Glomerular , Humanos , Riñón/fisiopatología , Fallo Renal Crónico/metabolismo , Fallo Renal Crónico/psicología , Masculino , Persona de Mediana Edad , Inventario de Personalidad , Periodo Posoperatorio , Encuestas y Cuestionarios , Factores de Tiempo , Adulto Joven
7.
Animals (Basel) ; 14(3)2024 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-38338089

RESUMEN

Environmental practices related to the inhalation of airborne dust have been identified as the main cause of equine asthma (EA) and reasonably, they are truly relevant in its treatment and control, especially for horses with its severe form. Vast research regarding environmental recommendations has been conducted in recent years. However, no recent exhaustive reviews exist that gather all this new evidence. The aim of this review is to report and compare the most pertinent information concerning the environmental management of EA. The main findings highlight the importance of the type of forage used for feeding but also its method of production and possible contamination during manufacture and/or storage. Procedures to reduce this, such as soaking and steaming hay, improve its hygienic quality, although they also decrease forage's nutritional value, making dietetic supplementation necessary. Regarding stabling, despite some conflicting results, avoiding straw as bedding and improving barn ventilation continue to be the common recommendations if turning to pasture is not feasible. Finally, owners' compliance has been identified as the most critical point in correct environmental control. Educating owners about the genuine benefits of these measures should be a cornerstone of EA management.

8.
J Child Adolesc Trauma ; 17(2): 457-465, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38938963

RESUMEN

The experience of childhood cancer (CC) could be a traumatic event that produces long-term emotional responses such as posttraumatic stress symptoms (PTSS) and posttraumatic growth (PTG) in survivors. The relationship between both PTSS and PTG is not clear in CC survivors. Assessing challenges to core beliefs and rumination could give information regarding the different paths that lead to traumatic responses. Thus, this study aims to identify childhood cancer survivors' profiles from PTSS and PTG measures and to examine the pathways of relationships between PTSS and PTG, rumination, and challenge to core belief. Sixty-two CC survivors completed surveys on their childhood cancer experience, PTSS, PTG, challenge to core beliefs, and rumination. High PTG scores among childhood cancer survivors (Cluster 1), High PTSS scores among childhood cancer survivors (Cluster 2), and Childhood cancer survivors without changes (Cluster 3). Network analysis found that the challenge to core beliefs is the central point in the relationship between the variables, in a direct and positive relationship with PTG. We found an indirect path from challenge to core beliefs to PTSS, mediated by intrusive and deliberative ruminations. The combined findings suggested that there are different profiles related to trauma in CC survivors and the relationship between PTSS and PTG is mediated by the challenge to core beliefs and deliberative and intrusive rumination.

9.
Equine Vet J ; 55(6): 1094-1103, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-36624043

RESUMEN

BACKGROUND: Intravenous pharmacokinetics and oral bioavailability of cannabidiol (CBD) with different formulations have not been investigated in horses and may represent a starting point for clinical studies. OBJECTIVES: To describe pharmacokinetics after intravenous and oral administrations with oil and micellar formulations and simulate different treatments. STUDY DESIGN: Single intravenous experiment and two-way randomised oral experiments, Latin-square design. METHODS: Eight healthy horses received intravenous CBD at 1.00 mg/kg dose, oral CBD in sesame oil and in micellar formulation, both at 10.00 mg/kg. Concentrations were measured using LC-MS/MS and fitted by nonlinear mixed effect modelling. Parameters obtained were used to simulate single and multiple treatments at steady state. RESULTS: Intravenous and oral concentrations were simultaneously fitted using a three-compartment model. Final estimates indicate that CBD has a volume of distribution of 36 L/kg associated with a systemic clearance of 1.46 L/h/kg and half-lives ranged between 24 and 34 h. Oral bioavailability was close to 14% for both oral administrations. Simulated dose regimen of CBD every 12 and 24 h predicted similar percentages to reach effective plasma concentration with both oral formulation at 10.00 mg/kg. MAIN LIMITATIONS: A small horse population was used (8 horses per trial). CONCLUSIONS AND CLINICAL IMPORTANCE: Oral bioavailability was low at the doses studied but fell within the range described for horse and other species. CBD had a high steady-state volume of distribution, a high clearance and long half-lives. No adverse reactions were detected at any dose or route. The micellar formulation showed a faster absorption and higher concentration peak, while the oil formulation presented lower levels, but more maintained over time. Simulations predicted that both could be useful in multiple oral dose treatments. These results indicated that CBD could be of interest, but further studies are needed to evaluate its clinical use in horses.


Asunto(s)
Cannabidiol , Caballos , Animales , Cannabidiol/farmacocinética , Disponibilidad Biológica , Cromatografía Liquida/veterinaria , Espectrometría de Masas en Tándem/veterinaria , Administración Oral
10.
Clin Child Psychol Psychiatry ; 27(3): 782-792, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35616445

RESUMEN

Surviving childhood cancer is a difficult experience for children and their caregivers, it can produce long-term emotional distress. Illness perceptions refer to the way people understand the different aspects related to illness from their individual and collective experiences. OBJECTIVE: to compare the illness perceptions of adolescent childhood cancer survivors and their caregivers and examine the relationship between illness perception of childhood cancer survivors, their caregivers, and sociodemographic, illness, and treatment variables. Forty-three survivor-caregiver dyads (the mean age of a survivor 17.05 years old; the mean age of caregivers 47.53 years old) participated in the study and answered the Brief Illness Perception Questionnaire (Brief IPQ) and Demographics data. RESULTS: Results showed significant differences in the illness perceptions of survivors and caregivers. Caregivers presented more negative cognitive perceptions than survivors (t = -6.701, p < 0.001), especially in the identity dimension (t = -4.327, p < 0.001), and more negative emotional perceptions than survivors (t = -4.132, p < 0.001), both in concern (t = -3.695, p < 0.001) and emotional representation (t = -3.466, p < 0.001). No significant correlations were found between survivors' and caregivers' illness perceptions and sociodemographic illness variables. CONCLUSION: These findings showed that even though dyads went through cancer together, survivors' and caregivers' perceptions of childhood cancer are different, indicating the need to better understand how children growing up with a chronic disease develop such illness perceptions and their experience.


Asunto(s)
Supervivientes de Cáncer , Neoplasias , Adolescente , Supervivientes de Cáncer/psicología , Cuidadores/psicología , Niño , Enfermedad Crónica , Humanos , Persona de Mediana Edad , Calidad de Vida , Encuestas y Cuestionarios
11.
J Health Psychol ; 26(12): 2220-2230, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-32141302

RESUMEN

The aim of this study was to describe emotional cues and concerns expressed by cancer patients and their physicians using video-recorded regular oncology consultations. The consultations were divided into units of analysis and coded according to the Verona Coding Definitions of Emotional Sequences system. The study design was mixed, descriptive, and exploratory. Twelve patients and eight oncologists participated in the study. The patients expressed 349 cues/concerns during the 12 consultations. The majority (68.8%) of the content consisted of non-explicit description of physiological and stress episodes in the disease and treatment. Physicians demonstrated that they recognized fewer underlying cues than those related to physiological complaints.


Asunto(s)
Señales (Psicología) , Médicos , Comunicación , Emociones , Humanos , Relaciones Médico-Paciente , Derivación y Consulta , Grabación de Cinta de Video
12.
J Clin Psychol Med Settings ; 15(2): 154-62, 2008 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-19104980

RESUMEN

This study assessed the influence of clinical and socio-demographic variables on the psychological adaptation of transplanted adolescents. Twenty-six transplanted adolescents and 25 healthy adolescents, aged 13-17, and their parents participated in the study. The following domains were measured: social competence, emotional/behavioral problems, self-concept, self-esteem and subjective well-being. The findings revealed that transplanted boys presented significantly less social competence (U = 26,000, p < .05) and more externalizing problems (U = 25,000, p < .05), social problems (U = 25,000, p < .05) and attention problems (U = 17,500, p < .01) than healthy boys. In contrast, transplanted girls displayed significantly more internalizing problems (U = 47,000, p < .05) and lower physical self-concept (U = 49,500, p < .05) than healthy girls. Hierarchical regression analysis showed clinical variables, especially waiting-list time, significantly predicted attention problems (beta = .364, p < .05) and negative affect (beta = .632, p < .05) in transplanted adolescents. Also, male (beta = -0.554, p < .01) and younger (beta = -0.444, p < .01) transplanted adolescents were at risk for attention problems. Our data suggest the importance of the waiting-list time for transplanted adolescents. Efforts to reduce the pretransplant phase would help adolescents achieve better psychological adaptation at long-term posttransplant.


Asunto(s)
Adaptación Psicológica , Conducta del Adolescente/psicología , Trasplante de Órganos/psicología , Adolescente , Síntomas Afectivos/epidemiología , Síntomas Afectivos/psicología , Trastorno por Déficit de Atención con Hiperactividad/epidemiología , Trastorno por Déficit de Atención con Hiperactividad/psicología , Imagen Corporal , Femenino , Humanos , Control Interno-Externo , Masculino , Trastornos Mentales/epidemiología , Trastornos Mentales/psicología , Escalas de Valoración Psiquiátrica/estadística & datos numéricos , Autoimagen , Distribución por Sexo , Conducta Social , Trastorno de la Conducta Social/epidemiología , Trastorno de la Conducta Social/psicología , Factores Socioeconómicos , España/epidemiología
13.
Psicooncología (Pozuelo de Alarcón) ; 20(1): 27-43, 11 abr. 2023. ilus, tab
Artículo en Inglés | IBECS (España) | ID: ibc-219017

RESUMEN

The aim of this study is to examine patient emotional cues to oncologists’ responses and explore the association between the concerns and emotional cues during the consultation and the physicians’ response to them throughout treatment, satisfaction, and the assessment of the patients’ perception of the established communication. Method: Cross-sectional design, involved 12 adults patients undergoing cancer treatment and eight physicians in the study. The twelve video-recorded medical consultations were coded (349 cues/concern) using the Verona coding definitions of emotional sequences (VR-CoDES). Results: A strong association between explicit with reducing space responses and the physiological symptoms cues (x²=6.029; p=0.014), and related to the repetition cue of the content by the patient (x²=5.599; p=0.018) was observed. Patients expressed fewer non-verbal behaviors (for example, crying, silence, silent pauses), as they had been undergoing treatment for a longer time, therefore, provided with more empathic responses from physicians. Conclusion: The identification of emotions can help physicians to further explore patients’ underlying cues that reveal emotional distress concerning illness and treatment in a less explicit way. There is a need for improvement in the physician’s ability to recognize patients’ concerns and to provide space for patients to have comprehensive health care, considering the severity of cancer disease and its negative emotional impacts for patients (AU)


El objetivo de este estudio es examinar cómo los oncólogos responden a las preocupaciones emocionales de las personas con cáncer durante el tratamiento, relacionarlas con la satisfacción y evaluar las percepciones de comunicación de los pacientes. Diseño transversal, en el que participaron 12 pacientes adultos en tratamiento oncológico y ocho médicos en el estudio. Las doce consultas médicas grabadas en vídeo se codificaron (349 pistas/inquietudes) utilizando las definiciones de codificación de secuencias emocionales de Verona (VR-CoDES). Hubo fuerte asociación entre respuestas explícitas con reducción de espacio y claves de síntomas fisiológicos (x²=6,029; p=0,014), y relacionada con la repetición de claves de contenido por parte del paciente (x²=5,599; p=0,018). Los pacientes expresaron menos comportamientos no verbales (por ejemplo, llanto, silencio, pausas silenciosas) ya que habían estado en tratamiento por más tiempo y, por lo tanto, tenían respuestas más empáticas por parte de los médicos. La identificación de las emociones puede ayudar a los médicos a explorar más a fondo las pistas subyacentes de los pacientes que revelan angustia emocional por la enfermedad y el tratamiento de una manera menos abierta. Existe la necesidad de mejorar la capacidad del médico para reconocer las preocupaciones de los pacientes y hacer espacio para que los pacientes tengan una atención integral en salud, considerando la gravedad de la enfermedad oncológica y sus impactos emocionales negativos para los pacientes (AU)


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Anciano , Anciano de 80 o más Años , Actitud del Personal de Salud , Relaciones Médico-Paciente , Satisfacción del Paciente , Neoplasias/psicología , Emociones
14.
Nat Microbiol ; 2: 17022, 2017 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-28248290

RESUMEN

Retinoic acid-inducible gene I (RIG-I) receptor recognizes 5'-triphosphorylated RNA and triggers a signalling cascade that results in the induction of type-I interferon (IFN)-dependent responses. Its precise regulation represents a pivotal balance between antiviral defences and autoimmunity. To elucidate the cellular cofactors that regulate RIG-I signalling, we performed two global RNA interference analyses to identify both positive and negative regulatory nodes operating on the signalling pathway during virus infection. These factors were integrated with experimentally and computationally derived interactome data to build a RIG-I protein interaction network. Our analysis revealed diverse cellular processes, including the unfolded protein response, Wnt signalling and RNA metabolism, as critical cellular components governing innate responses to non-self RNA species. Importantly, we identified K-Homology Splicing Regulatory Protein (KHSRP) as a negative regulator of this pathway. We find that KHSRP associates with the regulatory domain of RIG-I to maintain the receptor in an inactive state and attenuate its sensing of viral RNA (vRNA). Consistent with increased RIG-I antiviral signalling in the absence of KHSRP, viral replication is reduced when KHSRP expression is knocked down both in vitro and in vivo. Taken together, these data indicate that KHSRP functions as a checkpoint regulator of the innate immune response to pathogen challenge.


Asunto(s)
Proteína 58 DEAD Box/antagonistas & inhibidores , ARN Viral/inmunología , Proteínas de Unión al ARN/metabolismo , Transducción de Señal , Transactivadores/metabolismo , Células HEK293 , Humanos , Inmunidad Innata , Subtipo H1N1 del Virus de la Influenza A/inmunología , Unión Proteica , Mapeo de Interacción de Proteínas , Mapas de Interacción de Proteínas , Receptores Inmunológicos
15.
mBio ; 5(2): e01006-14, 2014 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-24692634

RESUMEN

The cytoplasmic helicase RIG-I is an established sensor for viral 5'-triphosphorylated RNA species. Recently, RIG-I was also implicated in the detection of intracellular bacteria. However, little is known about the host cell specificity of this process and the bacterial pathogen-associated molecular pattern (PAMP) that activates RIG-I. Here we show that RNA of Salmonella enterica serovar Typhimurium activates production of beta interferon in a RIG-I-dependent fashion only in nonphagocytic cells. In phagocytic cells, RIG-I is obsolete for detection of Salmonella infection. We further demonstrate that Salmonella mRNA reaches the cytoplasm during infection and is thus accessible for RIG-I. The results from next-generation sequencing analysis of RIG-I-associated RNA suggest that coding bacterial mRNAs represent the activating PAMP. IMPORTANCE S. Typhimurium is a major food-borne pathogen. After fecal-oral transmission, it can infect epithelial cells in the gut as well as immune cells (mainly macrophages, dendritic cells, and M cells). The innate host immune system relies on a growing number of sensors that detect pathogen-associated molecular patterns (PAMPs) to launch a first broad-spectrum response to invading pathogens. Successful detection of a given pathogen depends on colocalization of host sensors and PAMPs as well as potential countermeasures of the pathogen during infection. RIG-I-like helicases were mainly associated with detection of RNA viruses. Our work shows that S. Typhimurium is detected by RIG-I during infection specifically in nonimmune cells.


Asunto(s)
ARN Helicasas DEAD-box/inmunología , Interacciones Huésped-Patógeno , ARN Bacteriano/inmunología , ARN Mensajero/inmunología , Receptores Inmunológicos/inmunología , Salmonella typhimurium/inmunología , Animales , Línea Celular , Proteína 58 DEAD Box , ARN Helicasas DEAD-box/metabolismo , Humanos , Interferón beta/inmunología , Interferón beta/metabolismo , Ratones , Unión Proteica , ARN Bacteriano/metabolismo , ARN Mensajero/metabolismo , Receptores Inmunológicos/metabolismo
16.
Psicooncología (Pozuelo de Alarcón) ; 15(2): 237-248, jul.-dic. 2018. tab
Artículo en Inglés | IBECS (España) | ID: ibc-178671

RESUMEN

Objective: Understand how mothers with cancer communicate about the disease with their children. Method: We used qualitative methods. Ten mothers participated in a semi-structured interview about their experiences of disclosing the disease to their young children. The interviews were audio recorded and transcribed. Results: Two main themes emerged, including three sub-themes for the second theme: 1) The cancer was disclosed to the children; 2) The cancer was not disclosed to the children; 2.1 Did not tell her child and has no intention to do so; 2.2 Did not tell her child but plans to do so in the future; and 2.3 Did not tell her child but believes her child knows about the disease. Mothers who succeed in maintain a sincere dialogue with their children show a strong affective closeness with their children. Conclusions: The findings may be useful for understanding and planning communication strategies that favor the mother-child bond and that positively contribute to the treatment of mothers with cancer


Objectivo: comprender cómo madres con cáncer se comunican sobre su enfermedad con sus hijos. Método: diseño cualitativo. Diez madres participaron de una entrevista semi-estructurada sobre sus experiencias de revelación de la enfermedad a sus hijos pequeños. Las entrevistas fueron grabadas en audio y transcritas. Resultados: dos temas principales fueron identificados, y el segundo tema contiene tres sub-temas: 1) el cáncer fue revelado a los niños; 2) el cáncer no fue revelado a los niños; 2.1 no reveló al niño y no hay la intención de hacerlo; 2.2 no reveló al niño pero hay planos de hacerlo en el futuro; y 2.3 reveló al niño pero cree que él sabe sobre la enfermedad. Las madres que lograron mantener un diálogo sincero con sus niños fuerte cercanía afectiva con sus hijos. Conclusiones: Los hallazgos pueden ser útiles para comprender y planear estrategias de comunicación que favorezcan el vínculo madre-hijo y que contribuyan de manera positiva al tratamiento de las madres con cáncer


Asunto(s)
Humanos , Femenino , Lactante , Preescolar , Niño , Adolescente , Adulto Joven , Adulto , Persona de Mediana Edad , Conducta Materna/psicología , Relaciones Madre-Hijo/psicología , Neoplasias/psicología , Comunicación , 25783
17.
Psicooncología (Pozuelo de Alarcón) ; 15(1): 119-132, ene.-jun. 2018. tab
Artículo en Español | IBECS (España) | ID: ibc-171942

RESUMEN

Objetivo: examinar aspectos transculturales de la revelación del diagnóstico de cáncer en pacientes brasileños y españoles. Método: Se realizó una investigación cualitativa en la que fueron entrevistados 28 pacientes en quimioterapia (14 brasileños y 14 españoles). El análisis de contenido identificó tres ejes temáticos: 1) Cómo fue revelado el diagnóstico; 2) Contexto en que el diagnóstico fue revelado y 3) Quién reveló el diagnóstico. Resultados: existen particularidades en la manera de revelar el diagnostico entre los dos países. En Brasil aún ocurre que el enfermo puede ser derivado a un oncólogo sin una explicación satisfactoria previa sobre su estado de salud. Aunque en los dos países existan relatos de comunicación de diagnóstico en el contexto apropiado (consulta), también ha aparecido revelación de manera informal (por teléfono) sin un ambiente adecuado para que el paciente sea acogido y tenga posibilidad de expresar sus miedos y sus dudas. Conclusión: es necesario invertir en la formación profesional para mejorar la habilidad de comunicación y educación en salud para tratar pacientes con cáncer (AU)


Objective: The aim of this study was to examine cross-cultural aspects of the disclosure of cancer diagnosis in Brazilian and Spanish patients. Method: A qualitative research was carried out in which 28 chemotherapy patients (14 Brazilian and 14 Spanish) were interviewed. Content analysis identified three thematic categories: 1) How the diagnosis was disclosured; 2) Context in which the diagnosis was disclosured; 3) Who disclosured the diagnosis. Results: Particularities in the diagnosis disclosure between the two countries was found. In Brazil, it still happens that patient can be referred to an oncologist without a satisfactory explanation about his health status. Although there are reports of diagnosis disclosure in the appropriate context (consultation), also there are reports informal disclosure (by telephone), without an adequate environment for the patient to be welcomed and able to express their fears and doubts. Conclusion: It is necessary to improve the professional training to improve communication skills and health education to treat cancer patients (AU)


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Anciano , Neoplasias/psicología , Relaciones Médico-Paciente/ética , Comunicación , Revelación de la Verdad , Sistemas de Comunicación en Hospital/tendencias , Comparación Transcultural , Educación en Salud/tendencias
18.
Psicooncología (Pozuelo de Alarcón) ; 14(1): 83-92, ene.-jun. 2017. tab
Artículo en Inglés | IBECS (España) | ID: ibc-163641

RESUMEN

Background: Breast cancer is the neoplasm with the highest mortality rates among Brazilian women. Family history plays an important role in tracking the illness because its analysis reveals possible genetic risks. Objective: The aim of this study is to compare the risk perception and self-care for breast cancer among healthy women with and without family history. Method: The study included 211 women (mean age = 59.11 years, SD = 8.54) of which 55 (26.4%) had a family history of the illness. The instruments used were a sociodemographic and health behavior questionnaire and a risk perception questionnaire. Results and Conclusions: The results showed no significant differences in risk perception and self-care behavior among women with and without breast cancer history, signaling the need of guidelines for psychologists to act in breast cancer prevention among women with a family history, encompassing understanding of the risk factors and causes of the illness as well as women’s responsibility in tracking (AU)


Introducción: el cáncer de mama es el segundo tipo de neoplasia con más mortalidad entre las mujeres brasileñas. La historia familiar tiene un papel importante, pues su análisis permite identificar posibles riesgos genéticos. Objectivo: comparar la percepción de riesgo y el autocuidado del cáncer de mama en mujeres sanas con y sin historia familiar de la enfermedad. Método: Participaron 211 mujeres (edad media = 59,11 años, DT= 8,54), de las cuales 55 (26,4%) tenían historia familiar de la enfermedad. Los instrumentos utilizados fueron un cuestionario sociodemográfico y de conductas de salud y un cuestionario de percepción de riesgo. Resultados y Conclusiones: Los resultados mostraron que no existían diferencias significativas en la percepción de riesgo y conductas de autocuidado entre mujeres con y sin historia familiar de cáncer de mama, lo que señala la necesidad de protocolos de trabajo para los psicólogos en la prevención del cáncer de mama en mujeres con historia familiar de enfermedad oncológica, lo que incluye la comprensión de los factores de riesgo y las causas de la enfermedad, así como su responsabilidad en el seguimiento (AU)


Asunto(s)
Humanos , Femenino , Detección Precoz del Cáncer/psicología , Neoplasias de la Mama/psicología , Predisposición Genética a la Enfermedad/psicología , Asunción de Riesgos , Autocuidado , Neoplasias de la Mama/prevención & control , Enfermedades Genéticas Congénitas/psicología
19.
Psicooncología (Pozuelo de Alarcón) ; 12(2/3): 249-257, dic. 2015. tab
Artículo en Inglés | IBECS (España) | ID: ibc-147282

RESUMEN

This study aimed to examine the causal attribution for cervical cancer for women with and without the disease. Seventy-eight (78) users from the public healthcare system participated, which were divided into: a clinical group (CG) of women with cervical cancer and a non-clinical group (NCG) of women without cervical cancer. A Form covering sociodemographic and clinical data was utilized along with the Portuguese version of the Illness Perception Questionnaire for ill patients and healthy people. The responses were grouped into six categories: 1) Psychological attributions; 2) Behavioral risk factors; 3) Biological factors; 4) Bad luck; 5) Lack of resources; 6) Chemical agents. The CG attributed more emotional causes to the Cervical Cancer while the NCG more causes associated with behavioral risk factors. These results suggest that women with cancer may blame themselves for the illness. Distorted beliefs about the etiology of cervical cancer can harm preventative conduct and self-care practices


El estudio buscó examinar la atribución de causas del cáncer cervical de mujeres con y sin la enfermedad. Participaron setenta y ocho (78) usuarias del sistema público de salud, que fueron divididas en: grupo clínico (GC) de mujeres con cáncer cervical, y grupo no-clínico (GNC) de mujeres sin cáncer cervical. Fue utilizado un cuestionario de datos sociodemográficos y clínicos y la versión en portugués del Illness Perception Questionnaire para pacientes enfermos y personas sanas. Las respuestas fueron agrupadas en seis categorías: 1) Atribuciones psicológicas; 2) Factores de riscos comportamentales; 3) Factores biológicos; 4) Mala suerte; 5) Falta de recursos; 6) Agentes químicos. El GC atribuyó más causas emocionales al cáncer cervical, mientras el GNC atribuyó más causas asociadas a factores de risco comportamentales. Los resultados sugieren que mujeres con cáncer pueden culparse a sí mismas por la enfermedad. Creencias equivocadas sobre la etiología del cáncer cervical pueden perjudicar conductas de prevención y prácticas de autocuidado


Asunto(s)
Humanos , Femenino , Adulto Joven , Adulto , Persona de Mediana Edad , Neoplasias del Cuello Uterino/complicaciones , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/etiología , Actividades Cotidianas/psicología , Autocuidado/métodos , Autocuidado , Estudios de Casos y Controles , Análisis de Datos/métodos , Factores de Riesgo
20.
Pediatr Transplant ; 11(3): 272-8, 2007 May.
Artículo en Inglés | MEDLINE | ID: mdl-17430482

RESUMEN

Few studies have explored the long-term psychological effects on young adults of childhood transplants. The aim of the present work was to examine psychological adaptation related to self-concept, self-esteem and subjective well-being in young adults who had undergone solid organ transplantation in childhood. Twenty-four adults transplanted in childhood participated in the study (13 of them received kidney transplants, five heart transplants and six liver transplants). Participants were of both sexes, aged 18-22, and were selected from three public hospitals in Madrid. The results reveal no differences in psychological adaptation according to the transplant type (kidney, heart, or liver), and a significant difference in negative affect between women and men (women present more negative affect than men). Hierarchical regression analysis, after controlling for possible confounding effects of demographic and clinical variables, showed the predictive power of self-esteem to explain positive affect (60% of the total variance). Furthermore, physical self-concept, health status and time on waiting list explain 71% of the negative affect variance. Our data suggest the importance of self-esteem for the positive affect, and the power of clinical variables for the negative affect in young adults transplanted in childhood.


Asunto(s)
Enfermedad Crónica/psicología , Trasplante de Órganos/psicología , Adolescente , Adulto , Afecto , Niño , Estudios Transversales , Femenino , Humanos , Masculino , Valor Predictivo de las Pruebas , Autoimagen , Factores Sexuales , España , Encuestas y Cuestionarios
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