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1.
Cell ; 184(2): 460-475.e21, 2021 01 21.
Artículo en Inglés | MEDLINE | ID: mdl-33278358

RESUMEN

SARS-CoV-2-induced hypercytokinemia and inflammation are critically associated with COVID-19 severity. Baricitinib, a clinically approved JAK1/JAK2 inhibitor, is currently being investigated in COVID-19 clinical trials. Here, we investigated the immunologic and virologic efficacy of baricitinib in a rhesus macaque model of SARS-CoV-2 infection. Viral shedding measured from nasal and throat swabs, bronchoalveolar lavages, and tissues was not reduced with baricitinib. Type I interferon (IFN) antiviral responses and SARS-CoV-2-specific T cell responses remained similar between the two groups. Animals treated with baricitinib showed reduced inflammation, decreased lung infiltration of inflammatory cells, reduced NETosis activity, and more limited lung pathology. Importantly, baricitinib-treated animals had a rapid and remarkably potent suppression of lung macrophage production of cytokines and chemokines responsible for inflammation and neutrophil recruitment. These data support a beneficial role for, and elucidate the immunological mechanisms underlying, the use of baricitinib as a frontline treatment for inflammation induced by SARS-CoV-2 infection.


Asunto(s)
Antiinflamatorios/administración & dosificación , Azetidinas/administración & dosificación , Tratamiento Farmacológico de COVID-19 , COVID-19/inmunología , Macaca mulatta , Infiltración Neutrófila/efectos de los fármacos , Purinas/administración & dosificación , Pirazoles/administración & dosificación , Sulfonamidas/administración & dosificación , Animales , COVID-19/fisiopatología , Muerte Celular/efectos de los fármacos , Degranulación de la Célula/efectos de los fármacos , Modelos Animales de Enfermedad , Inflamación/tratamiento farmacológico , Inflamación/genética , Inflamación/inmunología , Quinasas Janus/antagonistas & inhibidores , Pulmón/efectos de los fármacos , Pulmón/inmunología , Pulmón/patología , Activación de Linfocitos/efectos de los fármacos , Macrófagos Alveolares/inmunología , SARS-CoV-2/fisiología , Índice de Severidad de la Enfermedad , Linfocitos T/inmunología , Replicación Viral/efectos de los fármacos
2.
Cell ; 183(5): 1354-1366.e13, 2020 11 25.
Artículo en Inglés | MEDLINE | ID: mdl-33065030

RESUMEN

The COVID-19 pandemic has led to extensive morbidity and mortality throughout the world. Clinical features that drive SARS-CoV-2 pathogenesis in humans include inflammation and thrombosis, but the mechanistic details underlying these processes remain to be determined. In this study, we demonstrate endothelial disruption and vascular thrombosis in histopathologic sections of lungs from both humans and rhesus macaques infected with SARS-CoV-2. To define key molecular pathways associated with SARS-CoV-2 pathogenesis in macaques, we performed transcriptomic analyses of bronchoalveolar lavage and peripheral blood and proteomic analyses of serum. We observed macrophage infiltrates in lung and upregulation of macrophage, complement, platelet activation, thrombosis, and proinflammatory markers, including C-reactive protein, MX1, IL-6, IL-1, IL-8, TNFα, and NF-κB. These results suggest a model in which critical interactions between inflammatory and thrombosis pathways lead to SARS-CoV-2-induced vascular disease. Our findings suggest potential therapeutic targets for COVID-19.


Asunto(s)
COVID-19/complicaciones , COVID-19/inmunología , SARS-CoV-2/genética , Trombosis/complicaciones , Enfermedades Vasculares/complicaciones , Anciano de 80 o más Años , Animales , Lavado Broncoalveolar , Proteína C-Reactiva/análisis , COVID-19/sangre , COVID-19/patología , Activación de Complemento , Citocinas/sangre , Femenino , Humanos , Inflamación/sangre , Inflamación/inmunología , Inflamación/virología , Pulmón/patología , Macaca mulatta , Macrófagos/inmunología , Masculino , Activación Plaquetaria , Trombosis/sangre , Trombosis/patología , Transcriptoma , Enfermedades Vasculares/sangre , Enfermedades Vasculares/patología
3.
EMBO Rep ; 2024 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-39009832

RESUMEN

The COVID-19 pandemic reminded us of the urgent need for new antivirals to control emerging infectious diseases and potential future pandemics. Immunotherapy has revolutionized oncology and could complement the use of antivirals, but its application to infectious diseases remains largely unexplored. Nucleoside analogs are a class of agents widely used as antiviral and anti-neoplastic drugs. Their antiviral activity is generally based on interference with viral nucleic acid replication or transcription. Based on our previous work and computer modeling, we hypothesize that antiviral adenosine analogs, like remdesivir, have previously unrecognized immunomodulatory properties which contribute to their therapeutic activity. In the case of remdesivir, we here show that these properties are due to its metabolite, GS-441524, acting as an Adenosine A2A Receptor antagonist. Our findings support a new rationale for the design of next-generation antiviral agents with dual - immunomodulatory and intrinsic - antiviral properties. These compounds could represent game-changing therapies to control emerging viral diseases and future pandemics.

4.
PLoS Pathog ; 19(10): e1011660, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37801446

RESUMEN

One approach to 'functional cure' of HIV infection is to induce durable control of HIV replication after the interruption of antiretroviral therapy (ART). However, the major factors that determine the viral 'setpoint' level after treatment interruption are not well understood. Here we combine data on ART interruption following SIV infection for 124 total animals from 10 independent studies across 3 institutional cohorts to understand the dynamics and predictors of post-treatment viral control. We find that the timing of treatment initiation is an important determinant of both the peak and early setpoint viral levels after treatment interruption. During the first 3 weeks of infection, every day of delay in treatment initiation is associated with a 0.22 log10 copies/ml decrease in post-rebound peak and setpoint viral levels. However, delay in initiation of ART beyond 3 weeks of infection is associated with higher post-rebound setpoint viral levels. For animals treated beyond 3 weeks post-infection, viral load at ART initiation was the primary predictor of post-rebound setpoint viral levels. Potential alternative predictors of post-rebound setpoint viral loads including cell-associated DNA or RNA, time from treatment interruption to rebound, and pre-interruption CD8+ T cell responses were also examined in the studies where these data were available. This analysis suggests that optimal timing of treatment initiation may be an important determinant of post-treatment control of HIV.


Asunto(s)
Infecciones por VIH , Animales , Infecciones por VIH/tratamiento farmacológico , Linfocitos T CD8-positivos , ARN Viral , Carga Viral , Antirretrovirales/farmacología , Antirretrovirales/uso terapéutico
5.
Eur J Neurosci ; 59(7): 1848-1859, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38279522

RESUMEN

Emotion reactivity refers to the activation, intensity and duration of emotional responses to internal or external stimuli. It can be differentiated from emotion regulation since the former is the very first response to an emotional trigger, and the latter can be defined as a tool for maintaining one's arousal in a window of tolerance. Since, to date, there are no Italian self-report measures able to evaluate individuals' emotional reactivity, this study aimed to contribute to the Italian validation of the Perth Emotional Reactivity Scale-Short Form (PERS-S). The PERS-S is an 18-item self-report measure answered on a 5-point Likert scale that generates six subscale scores and two composite scores, with higher scores indicating higher levels of reactivity. Data from 768 individuals showed that the PERS-S had good to excellent goodness of fit. The internal consistency was high, with an overall reliability coefficient (Cronbach's α) of .87 and .86 for the negative and positive general scales, respectively. The PERS-S also demonstrated appropriate convergent validity, showing significant correlations with conceptually related measures, and acceptable divergent validity, showing minimal correlations with unrelated constructs. Finally, we evaluated the Test-Retest Reliability by administering the PERS-S to the same sample twice, with a 2-week interval. The significant correlations between the two PERS-S administrations suggest temporal stability. The Italian version of the PERS-S will enrich the repertoire of self-report measures for investigating the development and risk factors of mental health disorders and may have practical applications in clinical settings.


Asunto(s)
Emociones , Humanos , Encuestas y Cuestionarios , Reproducibilidad de los Resultados , Psicometría , Italia
6.
J Virol ; 97(4): e0167022, 2023 04 27.
Artículo en Inglés | MEDLINE | ID: mdl-36971588

RESUMEN

Elucidating the mechanisms underlying the persistence and location of the HIV reservoir is critical for developing cure interventions. While it has been shown that levels of T-cell activation and the size of the HIV reservoir are greater in rectal tissue and lymph nodes (LN) than in blood, the relative contributions of T-cell subsets to this anatomic difference are unknown. We measured and compared HIV-1 DNA content, expression of the T-cell activation markers CD38 and HLA-DR, and expression of the exhaustion markers programmed cell death protein 1 (PD-1) and T-cell immunoreceptor with immunoglobulin and immunoreceptor tyrosine-based inhibitory motif domains (TIGIT) in naive, central memory (CM), transitional memory (TM), and effector memory (EM) CD4+ and CD8+ T-cells in paired blood and LN samples among 14 people with HIV who were receiving antiretroviral therapy. HIV-1 DNA levels, T-cell immune activation, and TIGIT expression were higher in LN than in blood, especially in CM and TM CD4+ T-cell subsets. Immune activation was significantly higher in all CD8+ T-cell subsets, and memory CD8+ T-cell subsets from LN had higher levels of PD-1 expression, compared with blood, while TIGIT expression levels were significantly lower in TM CD8+ T-cells. The differences seen in CM and TM CD4+ T-cell subsets were more pronounced among participants with CD4+ T-cell counts of <500 cells/µL within 2 years after antiretroviral therapy initiation, thus highlighting increased residual dysregulation in LN as a distinguishing feature of and a potential mechanism for individuals with suboptimal CD4+ T-cell recovery during antiretroviral therapy. IMPORTANCE This study provides new insights into the contributions of different CD4+ and CD8+ T-cell subsets to the anatomic differences between LN and blood in individuals with HIV who have optimal versus suboptimal CD4+ T-cell recovery. To our knowledge, this is the first study comparing paired LN and blood CD4+ and CD8+ T-cell differentiation subsets, as well as those subsets in immunological responders versus immunological suboptimal responders.


Asunto(s)
Linfocitos T CD4-Positivos , Linfocitos T CD8-positivos , ADN Viral , Infecciones por VIH , Ganglios Linfáticos , Activación de Linfocitos , Humanos , Ganglios Linfáticos/citología , Ganglios Linfáticos/inmunología , Ganglios Linfáticos/virología , ADN Viral/análisis , VIH-1 , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/virología , Sangre/inmunología , Sangre/virología , Activación de Linfocitos/inmunología , Linfocitos T CD4-Positivos/inmunología , Linfocitos T CD4-Positivos/virología , Linfocitos T CD8-positivos/inmunología , Linfocitos T CD8-positivos/virología , Masculino , Adulto , Persona de Mediana Edad , Receptor de Muerte Celular Programada 1/genética , Receptor de Muerte Celular Programada 1/metabolismo , Subgrupos de Linfocitos T/inmunología , Subgrupos de Linfocitos T/virología
7.
J Sex Marital Ther ; 50(2): 197-215, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-37867461

RESUMEN

This study assessed dyadically the relationship between psychosocial impact of infertility experienced by 87 couples and individual coping strategies, perceived social support and some medical factors. Although problem-focused strategies emerged as positive, certain side effects on partner were revealed. Social support was related to psychosocial outcomes in a positive way, cognitive component of coping strategies resulted as a prominent factor on individual's adjustment as well as the partner's role. Findings suggest the convenience of promoting the awareness about the effects of each partner's feelings, behaviors and beliefs on his/her individual's well-being in this field due to the interdependent context in which they are. Infertility counselors may foster this process by evaluating and educating to them about the functionality of these factors.


Asunto(s)
Habilidades de Afrontamiento , Infertilidad , Humanos , Masculino , Femenino , Adaptación Psicológica , Infertilidad/psicología , Apoyo Social , Estrés Psicológico
8.
Am J Physiol Endocrinol Metab ; 325(4): E291-E302, 2023 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-37584609

RESUMEN

Insulin resistance and blunted mitochondrial capacity in skeletal muscle are often synonymous, however, this association remains controversial. The aim of this study was to perform an in-depth multifactorial comparison of skeletal muscle mitochondrial capacity between individuals who were lean and active (Active, n = 9), individuals with obesity (Obese, n = 9), and individuals with obesity, insulin resistance, and type 2 diabetes (T2D, n = 22). Mitochondrial capacity was assessed by ex vivo mitochondrial respiration with fatty-acid and glycolytic-supported protocols adjusted for mitochondrial content (mtDNA and citrate synthase activity). Supercomplex assembly was measured by Blue Native (BN)-PAGE and immunoblot. Tricarboxylic (TCA) cycle intermediates were assessed with targeted metabolomics. Exploratory transcriptomics and DNA methylation analyses were performed to uncover molecular differences affecting mitochondrial function among the three groups. We reveal no discernable differences in skeletal muscle mitochondrial content, mitochondrial capacity, supercomplex assembly, TCA cycle intermediates, and mitochondrial molecular profiles between obese individuals with and without T2D that had comparable levels of confounding factors (body mass index, age, and aerobic capacity). We highlight that lean, active individuals have greater mitochondrial content, mitochondrial capacity, supercomplex assembly, and TCA cycle intermediates. These phenotypical changes are reflected at the level of DNA methylation and gene transcription. The collective observation of comparable muscle mitochondrial capacity in individuals with obesity and T2D (vs. individuals without T2D) underscores a dissociation from skeletal muscle insulin resistance. Clinical trial number: NCT01911104.NEW & NOTEWORTHY Whether impaired mitochondrial capacity contributes to skeletal muscle insulin resistance is debated. Our multifactorial analysis shows no differences in skeletal muscle mitochondrial content, mitochondrial capacity, and mitochondrial molecular profiles between obese individuals with and without T2D that had comparable levels of confounding factors (BMI, age, aerobic capacity). We highlight that lean, active individuals have enhanced skeletal muscle mitochondrial capacity that is also reflected at the level of DNA methylation and gene transcription.


Asunto(s)
Diabetes Mellitus Tipo 2 , Resistencia a la Insulina , Humanos , Resistencia a la Insulina/fisiología , Diabetes Mellitus Tipo 2/metabolismo , Mitocondrias , Músculo Esquelético/metabolismo , Obesidad/metabolismo , Mitocondrias Musculares/metabolismo
9.
PLoS Pathog ; 17(8): e1009825, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-34449812

RESUMEN

Clinical outcomes are inferior for individuals with HIV having suboptimal CD4 T-cell recovery during antiretroviral therapy (ART). We investigated if the levels of infection and the response to homeostatic cytokines of CD4 T-cell subsets contributed to divergent CD4 T-cell recovery and HIV reservoir during ART by studying virologically-suppressed immunologic responders (IR, achieving a CD4 cell count >500 cells/µL on or before two years after ART initiation), and virologically-suppressed suboptimal responders (ISR, did not achieve a CD4 cell count >500 cells/µL in the first two years after ART initiation). Compared to IR, ISR demonstrated higher levels of HIV-DNA in naïve, central (CM), transitional (TM), and effector (EM) memory CD4 T-cells in blood, both pre- and on-ART, and specifically in CM CD4 T-cells in LN on-ART. Furthermore, ISR had higher pre-ART plasma levels of IL-7 and IL-15, cytokines regulating T-cell homeostasis. Notably, pre-ART PD-1 and TIGIT expression levels were higher in blood CM and TM CD4 T-cells for ISR; this was associated with a significantly lower fold-changes in HIV-DNA levels between pre- and on-ART time points exclusively on CM and TM T-cell subsets, but not naïve or EM T-cells. Finally, the frequency of CM CD4 T-cells expressing PD-1 or TIGIT pre-ART as well as plasma levels of IL-7 and IL-15 predicted HIV-DNA content on-ART. Our results establish the association between infection, T-cell homeostasis, and expression of PD-1 and TIGIT in long-lived CD4 T-cell subsets prior to ART with CD4 T-cell recovery and HIV persistence on-ART.


Asunto(s)
Antirretrovirales/farmacología , Linfocitos T CD4-Positivos/inmunología , Citocinas/metabolismo , Infecciones por VIH/virología , Homeostasis , Subgrupos de Linfocitos T/inmunología , Linfocitos T CD4-Positivos/efectos de los fármacos , Linfocitos T CD4-Positivos/virología , ADN Viral , Femenino , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/inmunología , VIH-1/inmunología , Humanos , Memoria Inmunológica/inmunología , Masculino , Persona de Mediana Edad , Subgrupos de Linfocitos T/efectos de los fármacos , Subgrupos de Linfocitos T/virología , Carga Viral
10.
J Sleep Res ; : e13912, 2023 Apr 27.
Artículo en Inglés | MEDLINE | ID: mdl-37102280

RESUMEN

In the context of sleep disturbances, increasing evidence suggests a critical role of sleep-related dysfunctional metacognitive activity, including metacognitive control of intrusive thoughts in the pre-sleep period. Although the relationship between sleep-related thought-control strategies and poor sleep quality is well recognized, the possible contribution of general metacognitive functioning within this relation is still unclear. In this study, we performed a mediation analysis to examine the role of thought-control strategies on the relationship between metacognitive abilities and sleep quality in individuals with different self-reported sleep characteristics. Two-hundred and forty-five individuals participated in the study. Participants completed the Pittsburgh Sleep Quality Index, the Thought Control Questionnaire Insomnia-Revised, and the Metacognition Self-Assessment Scale to evaluate sleep quality, thought-control strategies and metacognitive functions, respectively. The results showed that worry strategy in the pre-sleep period mediates the relationship between metacognitive functions and sleep quality. Particularly, the ability to understand one's mental states and mastery functions could be the two metacognitive domains primarily involved in the dysfunctional metacognitive thought-control activity responsible for reduced sleep quality. The observed effect suggests that inadequate metacognitive functioning is associated with poor sleep quality in healthy subjects via the mediation of dysfunctional worry strategy. These findings suggest the potential relevance of clinical interventions to enhance specific metacognitive abilities, with the aim to promote more functional strategies for managing cognitive and emotional processes during the pre-sleep period.

11.
Int J Mol Sci ; 24(5)2023 Feb 26.
Artículo en Inglés | MEDLINE | ID: mdl-36902005

RESUMEN

T lymphocytes are key players in adaptive immune responses through the recognition of peptide antigens through the T Cell Receptor (TCR). After TCR engagement, a signaling cascade is activated, leading to T cell activation, proliferation, and differentiation into effector cells. Delicate control of activation signals coupled to the TCR is needed to avoid uncontrolled immune responses involving T cells. It has been previously shown that mice deficient in the expression of the adaptor NTAL (Non-T cell activation linker), a molecule structurally and evolutionarily related to the transmembrane adaptor LAT (Linker for the Activation of T cells), develop an autoimmune syndrome characterized by the presence of autoantibodies and enlarged spleens. In the present work we intended to deepen investigation into the negative regulatory functions of the NTAL adaptor in T cells and its potential relationship with autoimmune disorders. For this purpose, in this work we used Jurkat cells as a T cell model, and we lentivirally transfected them to express the NTAL adaptor in order to analyze the effect on intracellular signals associated with the TCR. In addition, we analyzed the expression of NTAL in primary CD4+ T cells from healthy donors and Rheumatoid Arthritis (RA) patients. Our results showed that NTAL expression in Jurkat cells decreased calcium fluxes and PLC-γ1 activation upon stimulation through the TCR complex. Moreover, we showed that NTAL was also expressed in activated human CD4+ T cells, and that the increase of its expression was reduced in CD4+ T cells from RA patients. Our results, together with previous reports, suggest a relevant role for the NTAL adaptor as a negative regulator of early intracellular TCR signaling, with a potential implication in RA.


Asunto(s)
Proteínas Adaptadoras Transductoras de Señales , Artritis Reumatoide , Humanos , Proteínas Adaptadoras Transductoras de Señales/metabolismo , Células Jurkat , Proteínas de la Membrana/metabolismo , Fosfoproteínas/metabolismo , Fosforilación , Receptores de Antígenos de Linfocitos T/metabolismo
12.
Fam Process ; 62(2): 557-575, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-36175066

RESUMEN

This is a quasi-experimental, nonequivalent design study investigating the efficacy of multicouple group and single-couple intervention formats aimed at diminishing the psychosocial impact of infertility. The review studies carried out to date that have assessed this subject do not show consistent findings and although increasing the efficacy and efficiency of intervention formats more than justifies their analysis, there are no studies making this particular comparison. Eighty-seven infertile couples who were in assessment for their infertility and/or were close to undergoing some kind of assisted reproductive technology process participated in a psychosocial intervention either under the multicouple group or single-couple subconditions, or acted as controls. The variables of depression, anxiety, and fertility quality of life were used for evaluating psychosocial impact. Comparisons were made: (a) between the intervention condition and controls and (b) between the two subconditions. The results support the efficacy of the intervention both in the dyadic latent growth curve models analysis carried out and in the treatment effect calculation. Although in the comparison between the multicouple and single-couple format, some differences generally favoring the single format one were found, they were not conclusive. Therefore, the results are in line with review studies that did not find the group format to be more effective. Although this study provides valuable information, its limitations mean that further research needs to be carried out. When selecting the intervention format, therapists should also weigh up others aspects, such as the intervention goal, patient's needs and characteristics, reproductive history, and current stage of infertility.


Asunto(s)
Infertilidad , Intervención Psicosocial , Femenino , Humanos , Calidad de Vida , Estrés Psicológico/terapia , Infertilidad/terapia , Infertilidad/psicología , Ansiedad/terapia
13.
Am J Physiol Cell Physiol ; 323(2): C606-C616, 2022 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-35785986

RESUMEN

The impact of aerobic training on human skeletal muscle cell (HSkMC) mitochondrial metabolism is a significant research gap, critical to understanding the mechanisms by which exercise augments skeletal muscle metabolism. We therefore assessed mitochondrial content and capacity in fully differentiated CD56+ HSkMCs from lean active (LA) and sedentary individuals with obesity (OS) at baseline, as well as lean/overweight sedentary individuals (LOS) at baseline and following an 18-day aerobic training intervention. Participants had in vivo skeletal muscle PCr recovery rate by 31P-MRS (mitochondrial oxidative kinetics) and cardiorespiratory fitness (V̇o2max) assessed at baseline. Biopsies of the vastus lateralis were performed for the isolation of skeletal muscle stem cells. LOS individuals repeated all assessments posttraining. HSkMCs were evaluated for mitochondrial respiratory capacity by high-resolution respirometry. Data were normalized to two indices of mitochondrial content (CS activity and OXPHOS protein expression) and a marker of total cell count (quantity of DNA). LA individuals had significantly higher V̇o2max than OS and LOS-Pre training; however, no differences were observed in skeletal muscle mitochondrial capacity, nor in carbohydrate- or fatty acid-supported HSkMC respiratory capacity. Aerobic training robustly increased in vivo skeletal muscle mitochondrial capacity of LOS individuals, as well as carbohydrate-supported HSkMC respiratory capacity. Indices of mitochondrial content and total cell count were similar among the groups and did not change with aerobic training. Our findings demonstrate that bioenergetic changes induced with aerobic training in skeletal muscle in vivo are retained in HSkMCs in vitro without impacting mitochondrial content, suggesting that training improves intrinsic skeletal muscle mitochondrial capacity.


Asunto(s)
Mitocondrias Musculares , Músculo Esquelético , Carbohidratos , Ejercicio Físico/fisiología , Humanos , Mitocondrias Musculares/metabolismo , Músculo Esquelético/metabolismo , Células Madre
14.
J Sex Marital Ther ; 48(5): 461-474, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34873994

RESUMEN

This study assessed the relationship between the marital satisfaction variable and the psychosocial impact of infertility and anxiety disposition, testing for possible gender-based differences. Comparisons performed on 87 couples did reveal differences and analyses disclosed that depression, anxiety and quality of life can influence the assessment each partner makes of their relationship, through an interdependent process. One partner's marital satisfaction can be influenced by those variables in the other partner. These findings indicate that psychosocial care for infertile couples must involve both partners and that they should be made aware of the effect of interdependence on marital satisfaction.


Asunto(s)
Infertilidad , Satisfacción Personal , Ansiedad , Humanos , Infertilidad/psicología , Matrimonio/psicología , Calidad de Vida/psicología
15.
Arch Sex Behav ; 51(4): 2091-2115, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-34779982

RESUMEN

Asexuality is a lack of sexual attraction to any gender. There is some evidence to suggest that many self-identified asexuals have a formal diagnosis of autism spectrum disorder which is characterized by deficits in social interaction and communication, as well as by restricted and repetitive interests and behaviors. Additionally, the literature shows that asexuality and lack of sexual attraction or low sexual interest is overrepresented in people with autism spectrum disorder compared with neurotypical samples. Nevertheless, no studies have been conducted to investigate the relationship between autism and asexuality in depth. We conducted a systematic review of the literature to examine whether asexuality and autism spectrum disorder are connected. We conclude that asexuality and autism share various aspects, such as a possible role of prenatal factors, reference to romantic dimensions of sexual attraction and sexual orientation, and non-partner-oriented sexual desire, but future research should explore and clarify this link.


Asunto(s)
Trastorno del Espectro Autista , Comunicación , Femenino , Identidad de Género , Humanos , Libido , Masculino , Conducta Sexual
16.
Artículo en Inglés | MEDLINE | ID: mdl-35763176

RESUMEN

Early diagnosis is crucial for Autism spectrum disorder (ASD) and is achieved through a screening of developmental indicators to recognise children who are at risk of autism. One of the most widely used instruments in clinical practice for assessing child development is the Griffiths Mental Development Scale (GMDS). We sought (a) to assess longitudinally whether children diagnosed with ASD, with a mean age of 33.50 months (SD 7.69 months), show a developmental delay of abilities measured by the GMDS over time and (b) to analyse which skills of the GMDS could be associate to the symptomatologic severity of ASD. Our results showed lower scores of General Quotient and all sub-quotients of GMDS from first (T0) to second assessment (T1), except for the Performance sub-quotient. Three sub-quotients (Personal-Social, Hearing and Language and Practical Reasoning) also associate symptom severity at the time when the diagnosis of ASD is made.

17.
J Community Psychol ; 50(3): 1668-1680, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-34758120

RESUMEN

This study aims to observe whether people with disabilities experience problematic Internet use (PIU) like that of young people without disabilities; to relate PIU to psychological distress in young disabled people and to determine whether these problems are similar to or different from those experienced by young people without disabilities. The sample comprised 408 university students with disabilities and 1386 university students without disabilities from several Spanish universities. PIU was evaluated using the Internet Addiction Test (IAT) and psychological distress was evaluated using the Clinical Outcomes in Routine Evaluation-Outcome Measure (CORE-OM). The group of university students with disabilities showed less PIU than the nondisabled students, but the worst scores in variables referencing psychological discomfort were found among those students with disabilities who also had PIU. Although the results are not completely generalizable, PIU is related to bigger problems in disabled people for whom it represents a higher risk than for people without disabilities.


Asunto(s)
Conducta Adictiva , Personas con Discapacidad , Adolescente , Estudios Transversales , Humanos , Uso de Internet , Estudiantes/psicología , Universidades
18.
PLoS Pathog ; 15(10): e1008081, 2019 10.
Artículo en Inglés | MEDLINE | ID: mdl-31626660

RESUMEN

Lymph nodes (LN) and their resident T follicular helper CD4+ T cells (Tfh) are a critical site for HIV replication and persistence. Therefore, optimizing antiviral activity in lymphoid tissues will be needed to reduce or eliminate the HIV reservoir. In this study, we retained effector immune cells in LN of cART-suppressed, SIV-infected rhesus macaques by treatment with the lysophospholipid sphingosine-1 phosphate receptor modulator FTY720 (fingolimod). FTY720 was remarkably effective in reducing circulating CD4+ and CD8+ T cells, including those with cytolytic potential, and in increasing the number of these T cells retained in LN, as determined directly in situ by histocytometry and immunohistochemistry. The FTY720-induced inhibition of T cell egress from LN resulted in a measurable decrease of SIV-DNA content in blood as well as in LN Tfh cells in most treated animals. In conclusion, FTY720 administration has the potential to limit viral persistence, including in the critical Tfh cellular reservoir. These findings provide rationale for strategies designed to retain antiviral T cells in lymphoid tissues to target HIV remission.


Asunto(s)
Clorhidrato de Fingolimod/uso terapéutico , Inmunosupresores/uso terapéutico , Linfopenia/inducido químicamente , Virus de la Inmunodeficiencia de los Simios/inmunología , Linfocitos T Citotóxicos/inmunología , Linfocitos T Colaboradores-Inductores/inmunología , Animales , Femenino , Centro Germinal/inmunología , Macaca mulatta , Síndrome de Inmunodeficiencia Adquirida del Simio/inmunología
19.
Cell Immunol ; 362: 104302, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33592540

RESUMEN

MDSC are a heterogeneous population of immature myeloid cells that are released by biological stress such as tissue damage and inflammation. Conventionally, MDSC are known for their detrimental role in chronic inflammation and neoplastic conditions. However, their intrinsic functions in immunoregulation, wound healing, and angiogenesis are intended to protect from over-reactive immune responses, maintenance of immunotolerance, tissue repair, and homeostasis. Paradoxically, under certain conditions, MDSC can impair protective immune responses and exacerbate the disease. The transition from protective to harmful MDSC is most likely driven by environmental and epigenetic mechanisms induced by prolonged exposure to unresolved inflammatory triggers. Here, we review several examples of the dual impact of MDSC in conditions such as maternal-fetal tolerance, self-antigens immunotolerance, obesity-associated cancer, sepsis and trauma. Moreover, we also highlighted the evidence indicating that MDSC have a role in COVID-19 pathophysiology. Finally, we have summarized the evidence indicating epigenetic mechanisms associated with MDSC function.


Asunto(s)
Células Supresoras de Origen Mieloide/inmunología , Animales , COVID-19/inmunología , Epigénesis Genética , Femenino , Humanos , Tolerancia Inmunológica/inmunología , Inflamación/inmunología , Masculino , Neoplasias/inmunología , Obesidad/inmunología , Embarazo , Cicatrización de Heridas/inmunología
20.
Rev Med Chil ; 149(7): 1031-1035, 2021 Jul.
Artículo en Español | MEDLINE | ID: mdl-34751305

RESUMEN

BACKGROUND: Facing a severe life-threatening disease has physical and emotional consequences for patients. AIM: To evaluate the physical and emotional sequelae in patients who survived COVID-19 pneumonia. MATERIAL AND METHODS: This cross-sectional study collected data from post-COVID-19 pneumonia patients admitted to an outpatient follow-up program in a public hospital in Chile. One month after hospital discharge, the evaluation of physical capacity was carried out through the 1-minute sit-to-stand test (1STST). In addition, the Clinical Frailty Scale (CFS) and the Hospital Anxiety and Depression scale were applied. RESULTS: We included 70 patients aged 63 ± 13 years (54% women). Eighty-five percent of the patients were able to execute the 1STST with an average of 20.6 ± 4.8 repetitions. Forty-eight percent of the patients had a performance below the 2.5th percentile according to the reference values and 28% of patients had exertional desaturation. The CFS classified as mildly vulnerable or with some degree of frailty to 33% of patients. Twenty-five percent of the patients presented symptoms of depression and 33% of anxiety. CONCLUSIONS: Patients who survived COVID-19 have a decrease in physical capacity and a significant proportion of depression and anxiety one month after hospital discharge.


Asunto(s)
COVID-19 , Trastornos de Ansiedad , Estudios Transversales , Femenino , Hospitalización , Humanos , Masculino , SARS-CoV-2
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