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1.
Artículo en Inglés | MEDLINE | ID: mdl-39144527

RESUMEN

Alterations in dynamic affective processes are associated with dysregulated affect and depression. Although depression is often associated with heightened inertia (i.e., greater moment-to-moment correlation) and variability (i.e., larger departures from typical levels) of affect in adults, less is known about whether altered affect dynamics are present in youth at risk for depression. This study investigated the association of clinical depression and depression risk with the inertia and variability of positive and negative affect in a sample of youth at varying risk for depression. Our sample included 147 adolescents aged 14 to 17, categorized into three groups: never-depressed lower-risk, never-depressed higher-risk (based on maternal history of depression), and currently depressed adolescents. Adolescents completed ecological momentary assessments of positive and negative affect up to seven times per day for a week. Multilevel models and ANOVAs were used to examine associations of affective inertia and variability with adolescent depression and risk based on maternal history, controlling for average affect. Depressed adolescents showed more inert and diminished positive affect, and more variable and elevated negative affect compared to lower- and higher-risk youth, though associations attenuated after controlling for average affect. No differences were identified between never-depressed higher-risk and lower-risk youth. Additional longitudinal studies are needed to evaluate whether altered affect dynamics in daily life precede depression onset to understand their utility for developing preventive interventions.

2.
Psychophysiology ; : e14666, 2024 Aug 08.
Artículo en Inglés | MEDLINE | ID: mdl-39118277

RESUMEN

Regulatory efforts are hypothesized to affect associations between emotions and physiology (i.e., concordance) to facilitate adaptive functioning. Assessing the role of coping on physiological-emotional concordance during ecologically relevant scenarios can elucidate whether concordance can serve as a biomarker of risk or resilience. The present study assessed self-reported coping as a moderator of minute-to-minute associations between autonomic nervous system activity and emotions (i.e., physiological-emotional concordance) in caregivers (N = 97) and adolescents (N = 97; ages 10-15) during a dyadic conflict task. Models included physiological variables (sympathetic, skin conductance level [SCL]; and parasympathetic, respiratory sinus arrhythmia [RSA]) and their interaction (SCL × RSA) as predictors of emotions, with coping variables as moderators. Caregivers' use of primary control coping (e.g., problem solving and emotional expression) and secondary control coping (e.g., cognitive reappraisal and acceptance) use in response to family stress predicted more positive emotional experiences during the laboratory conflict task. Adolescents' use of secondary control coping moderated the SCL-emotion association, such that increases in momentary SCL were associated with more positive emotion ratings for youth reporting higher secondary control coping. For youth who report more adaptive trait-level coping skills, momentary changes in SCL may reflect active engagement and attentiveness to facilitate more positive emotional experiences. Findings advance our understanding of the interrelationships between physiological responses and psychological experiences during relevant, interactive scenarios. Autonomic responses are differentially related to affective states depending on the coping strategies that adolescents employ, suggesting that concordance may be associated with intervention targets (i.e., coping skills).

3.
J Affect Disord ; 363: 532-541, 2024 Jul 22.
Artículo en Inglés | MEDLINE | ID: mdl-39047950

RESUMEN

BACKGROUND: The current study uses a nationally representative longitudinal dataset of sexual minority adults in the US to investigate the pathways from adverse childhood experiences (ACEs) to adulthood suicidal thoughts and behaviors. METHODS: ACEs were measured at year one, potential mediators at year two, and suicidal thoughts and behaviors (suicidal ideation, intent, plan, and attempt) at year three. We conducted an exploratory mediation analysis to identify potential mediating factors linking ACEs to suicidal thoughts and behaviors. Ten candidate mediators were examined: social well-being, felt stigma, experiences of everyday discrimination, social support, psychological distress, alcohol and drug use, importance of sexual identity, community connection, and internalized homophobia. RESULTS: Participants were 1518 adults who identified as lesbian or gay (n = 833; 55 %), bisexual (n = 493; 33 %), or with other sexual minority identities (n = 181; 12 %) and were on average 36.48 years (SD = 14.7) of age. Psychological distress served as a common mediator between ACEs and suicidal ideation, intent, plan, and attempt. Additionally, experiences of everyday discrimination emerged as a specific mediator leading to suicidal intent, whereas social support uniquely mediated the relation between ACEs and suicide plan. LIMITATIONS: Potential recall bias due to retrospective reporting of ACEs may be a limitation. Future studies should broaden the measurement scope of ACEs and implement intersectional methods. CONCLUSION: The current findings underscore the urgent need for targeted interventions that address the specific mental health needs of sexual minority individuals, particularly focusing on mitigating psychological distress, combating systemic discrimination, and enhancing social support.

4.
Artículo en Inglés | MEDLINE | ID: mdl-38916192

RESUMEN

OBJECTIVE: Adverse childhood experiences (ACEs) are associated with a range of negative health outcomes, including attention-deficit/hyperactivity disorder (ADHD) and neurocognitive deficits. This study identified symptom profiles in adult patients undergoing neuropsychological evaluations for ADHD and examined the association between these profiles and ACEs. METHODS: Utilizing unsupervised machine learning models, the study analyzed data from 208 adult patients. RESULTS: The Gaussian Mixture Model revealed two distinct symptom profiles: "Severely Impaired" and "Moderately Impaired". The "Severely Impaired" profile, 23.6% of the sample, was characterized by more severe ADHD symptomatology in childhood and worse neurocognitive performance. The "Moderately Impaired" profile, 76.4% of the sample, had scores in the average range for self-reported internalizing and externalizing psychopathology and better neurocognitive performance. There was a greater number of ACEs reported by patients in the Severely Impaired profile than the Moderately Impaired profile (p = .022). Specifically, using an ACEs cutoff of ≥4, 53.1% of patients in the Severely Impaired profile reported four or more ACEs, compared with 34.6% in the Moderately Impaired profile (p = .020). Profiles were not related to clinician-ascribed diagnosis. CONCLUSIONS: Findings underscore the association between ACEs and worse symptom profiles marked by impaired neurocognitive function, increased internalizing and externalizing psychopathology, and heightened perceived stress in adults with ADHD. Future research may explore the effect of ACEs on symptom profiles in diverse populations and potential moderators or mediators of these associations. Findings offers valuable insights for clinicians in their assessment and treatment planning.

5.
Br J Psychol ; 2024 Jun 26.
Artículo en Inglés | MEDLINE | ID: mdl-38926928

RESUMEN

The latent state-trait theory posits that a psychological construct may reflect stable influences specific to a person (i.e., trait), ephemeral influences from situations (i.e., state), and interactions between them (i.e., state-trait interactions). Researchers conventionally apply mixture modelling to explore heterogeneity in variables by identifying homogenous classes with respect to the measured variable, yet rarely distinguishing between person- and situation-specific classes. The current study introduces novel categorical latent state-trait models to identify subgroups in states and traits, quantifying the effects of person-specific classes, situation-specific classes, and person-situation interactions. The proposed models are applied to an empirical dataset. We discuss statistical inference, effect size measures, and model visualization for the proposed models. Based on realistic parameter values from the empirical dataset, preliminary simulation studies were conducted to investigate models' performances. Bayesian estimation in the proposed models allows flexible testing of a wide range of hypotheses related to state, trait, and interaction effects. We discuss limitations and future directions.

6.
Fish Physiol Biochem ; 50(3): 1265-1279, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38568383

RESUMEN

Fish typically adapt to their environment through evolutionary traits, and this adaptive strategy plays a critical role in promoting species diversity. Onychostoma macrolepis is a rare and endangered wild species that exhibits a life history of overwintering in caves and breeding in mountain streams. We analyzed the morphological characteristics, histological structure, and expression of circadian clock genes in O. macrolepis to elucidate its adaptive strategies to environmental changes in this study. The results showed that the relative values of O. macrolepis eye diameter, body height, and caudal peduncle height enlarged significantly during the breeding period. The outer layer of the heart was dense; the ventricular myocardial wall was thickened; the fat was accumulated in the liver cells; the red and white pulp structures of the spleen, renal tubules, and glomeruli were increased; and the goblet cells of the intestine were decreased in the breeding period. In addition, the spermatogenic cyst contained mature sperm, and the ovaries were filled with eggs at various stages of development. Throughout the overwintering period, the melano-macrophage center is located between the spleen and kidney, and the melano-macrophage center in the cytoplasm has the ability to synthesize melanin, and is arranged in clusters to form cell clusters or white pulp scattered in it. Circadian clock genes were identified in all organs, exhibiting significant differences between the before/after overwintering period and the breeding period. These findings indicate that the environment plays an important role in shaping the behavior of O. macrolepis, helping the animals to build self-defense mechanisms during cyclical habitat changes. Studying the morphological, histological structure and circadian clock gene expression of O. macrolepis during the overwintering and breeding periods is beneficial for understanding its unique hibernation behavior in caves. Additionally, it provides an excellent biological sample for investigating the environmental adaptability of atypical cavefish species.


Asunto(s)
Adaptación Fisiológica , Relojes Circadianos , Cyprinidae , Relojes Circadianos/genética , Cyprinidae/anatomía & histología , Cyprinidae/genética , Cyprinidae/fisiología , Cruzamiento , Conducta Sexual Animal/fisiología , Adaptación Fisiológica/fisiología , Animales , Masculino , Femenino , Estaciones del Año , Hígado/metabolismo , Bazo , Riñón , Proteínas de Peces/genética , Expresión Génica/fisiología
7.
J Cell Physiol ; 239(6): e31273, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38666419

RESUMEN

Glutathione peroxisomal-5 (Gpx5) promotes the elimination of H2O2 or organic hydrogen peroxide, and plays an important role in the physiological process of resistance to oxidative stress (OS). To directly and better understand the protection of Gpx5 against OS in epididymal cells and sperm, we studied its mechanism of antioxidant protection from multiple aspects. To more directly investigate the role of Gpx5 in combating oxidative damage, we started with epididymal tissue morphology and Gpx5 expression profiles in combination with the mouse epididymal epithelial cell line PC1 (proximal caput 1) expressing recombinant Gpx5. The Gpx5 is highly expressed in adult male epididymal caput, and its protein signal can be detected in the sperm of the whole epididymis. Gpx5 has been shown to alleviate OS damage induced by 3-Nitropropionic Acid (3-NPA), including enhancing antioxidant activity, reducing mitochondrial damage, and suppressing cell apoptosis. Gpx5 reduces OS damage in PC1 and maintains the well-functioning extracellular vesicles (EVs) secreted by PC1, and the additional epididymal EVs play a role in the response of sperm to OS damage, including reducing plasma membrane oxidation and death, and increasing sperm motility and sperm-egg binding ability. Our study suggests that GPX5 plays an important role as an antioxidant in the antioxidant processes of epididymal cells and sperm, including plasma membrane oxidation, mitochondrial oxidation, apoptosis, sperm motility, and sperm-egg binding ability.


Asunto(s)
Antioxidantes , Epidídimo , Vesículas Extracelulares , Glutatión Peroxidasa , Estrés Oxidativo , Espermatozoides , Animales , Masculino , Ratones , Antioxidantes/metabolismo , Apoptosis/efectos de los fármacos , Línea Celular , Epidídimo/metabolismo , Epidídimo/efectos de los fármacos , Células Epiteliales/metabolismo , Células Epiteliales/efectos de los fármacos , Vesículas Extracelulares/metabolismo , Vesículas Extracelulares/efectos de los fármacos , Glutatión Peroxidasa/metabolismo , Glutatión Peroxidasa/genética , Mitocondrias/metabolismo , Mitocondrias/efectos de los fármacos , Nitrocompuestos , Estrés Oxidativo/efectos de los fármacos , Propionatos/farmacología , Motilidad Espermática/efectos de los fármacos , Espermatozoides/metabolismo , Espermatozoides/efectos de los fármacos , Ratones Endogámicos C57BL , Envejecimiento , Metabolismo de los Lípidos
8.
Fish Physiol Biochem ; 2024 Apr 23.
Artículo en Inglés | MEDLINE | ID: mdl-38649597

RESUMEN

The Onychostoma macrolepis have a unique survival strategy, overwintering in caves and returning to the river for reproduction in summer. The current knowledge on the developmental status of its testes during winter and summer is still undiscovered. We performed RNA-seq analysis on O. macrolepis testes between January and June, using the published genome (NCBI, ASM1243209v1). Through KEGG and GO enrichment analysis, we were able to identify 2111 differentially expressed genes (DEGs) and demonstrate their functions in signaling networks associated with the development of organism. At the genomic level, we found that during the overwintering phase, genes associated with cell proliferation (ccnb1, spag5, hdac7) were downregulated while genes linked to testicular fat metabolism (slc27a2, scd, pltp) were upregulated. This indicates suppression of both mitosis and meiosis, thereby inhibiting energy expenditure through genetic regulation of testicular degeneration. Furthermore, in January, we observed the regulation of autophagy and apoptosis (becn1, casp13), which may have the function of protecting reproductive organs and ensuring their maturity for the breeding season. The results provide a basis for the development of specialized feed formulations to regulate the expression of specific genes, or editing of genes during the fish egg stage, to ensure that the testes of O. macrolepis can mature more efficiently after overwintering, thereby enhancing reproductive performance.

9.
J Affect Disord ; 356: 722-727, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38657769

RESUMEN

Suicide is one of the leading causes of death worldwide (WHO, 2021). Depression is a common precursor to suicide and suicidality; however, individuals' experience of depression and the meaning of suicide differs depending on one's cultural background (Colucci, 2013; Goodmann et al., 2021; Kleinman, 2004). The current study explores the relationship between suicide and depression among six broad cultural groups in a large sample (N = 17,015) of adults representing six broad cultural groups (Latin America, South Asia, former Soviet Bloc, Western English-speakers, Chinese, and Arab World). Participants were recruited to a multilingual depression and suicide screening study via Google Ads (Leykin et al., 2012; Gross et al., 2014). As expected, the presence of depression was associated with suicide attempts. However, cultural group moderated this association, with Chinese participants being most likely to report suicide attempts while screening negative for depression. Although depression remains an important predictor of suicidality, it appears that certain cultural groups may be at higher risk even when depression is not present. Clinicians should consider using culturally adapted assessments for depression and suicidality.


Asunto(s)
Depresión , Intento de Suicidio , Humanos , Masculino , Femenino , Intento de Suicidio/etnología , Intento de Suicidio/estadística & datos numéricos , Intento de Suicidio/psicología , Adulto , Depresión/psicología , Depresión/etnología , Persona de Mediana Edad , Adulto Joven , Comparación Transcultural , Ideación Suicida , Adolescente , América Latina/etnología
10.
12.
Appl Neuropsychol Adult ; : 1-10, 2024 Apr 24.
Artículo en Inglés | MEDLINE | ID: mdl-38657158

RESUMEN

BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is associated with various cognitive, behavioral, and mood symptoms that complicate diagnosis and treatment. The heterogeneity of these symptoms may also vary depending on certain sociodemographic factors. It is therefore important to establish more homogenous symptom profiles in patients with ADHD and determine their association with the patient's sociodemographic makeup. The current study used unsupervised machine learning to identify symptom profiles across various cognitive, behavioral, and mood symptoms in adults with ADHD. It was then examined whether symptom profiles differed based on relevant sociodemographic factors. METHODS: Participants were 382 adult outpatients (62% female; 51% non-Hispanic White) referred for neuropsychological evaluation for ADHD. RESULTS: Employing Gaussian Mixture Modeling, we identified two distinct symptom profiles in adults with ADHD: "ADHD-Plus Symptom Profile" and "ADHD-Predominate Symptom Profile." These profiles were primarily differentiated by internalizing psychopathology (Cohen's d = 1.94-2.05), rather than by subjective behavioral and cognitive symptoms of ADHD or neurocognitive test performance. In a subset of 126 adults without ADHD who were referred for the same evaluation, the unsupervised machine learning algorithm only identified one symptom profile. Group comparison analyses indicated that female patients were most likely to present with an ADHD-Plus Symptom Profile (χ2 = 5.43, p < .001). CONCLUSION: The machine learning technique used in this study appears to be an effective way to elucidate symptom profiles emerging from comprehensive ADHD evaluations. These findings further underscore the importance of considering internalizing symptoms and patients' sex when contextualizing adult ADHD diagnosis and treatment.

13.
Theriogenology ; 219: 147-156, 2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-38430799

RESUMEN

The supplementation of sperm culture media with serum is quite common, and improves both sperm survival and motility. However, the link between serum and sperm remains poorly understood. The present study is the first investigation of the effects on sperm quality and function of endogenous porcine serum exosomes in medium used for culturing boar sperm. Scanning electron microscopy (SEM) confirmed that serum-derived exosomes from both castrated boars (cbsExos) and sows (ssExos) exhibited typical nanostructural morphology and expressed CD63, CD9, and Alix, as shown by Western blotting. At 17 °C, the progressive motility and membrane integrity of sperm were significantly increased after incubation of fresh boar semen for 7 days with cbsExos-4 (8 × 1010 particles/mL) or ssExos-16 (32 × 1010 particles/mL). Moreover, cbsExos-4 and ssExos-16 were found to be effective sperm additives, improving mitochondrial transmembrane potential (ΔΨm) and adenosine triphosphate (ATP) content, total antioxidant activity (T-AOC), superoxide dismutase (SOD) activity, and glutathione peroxidase (GPx) activity while reducing reactive oxygen species (ROS) levels, and malondialdehyde (MDA) content following preservation at 17 °C after a 5-day incubation. Both fluorescence and SEM showed that the serum exosomes bound directly to the sperm membrane, suggesting an interaction that could influence sperm-zona pellucida binding. Overall, this study provides new insights into the potential benefits of adding cbsExos and ssExos to enhance the quality of boar sperm during ambient temperature preservation, which may lead to advancements in sperm preservation strategies.


Asunto(s)
Exosomas , Preservación de Semen , Porcinos , Animales , Masculino , Femenino , Semen/metabolismo , Exosomas/metabolismo , Motilidad Espermática , Espermatozoides/metabolismo , Análisis de Semen/veterinaria , Preservación de Semen/veterinaria , Antioxidantes/metabolismo
14.
Anim Nutr ; 16: 189-201, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38357572

RESUMEN

The production of selenium-enriched fish can contribute to alleviating selenium deficiency in human diets. However, it is still unclear which selenium source, as an additive, can efficiently and cost-effectively produce high-quality selenium-enriched fish. This study evaluated the effects of selenium nanoparticles (SeNP), selenite, and selenomethionine (SeMet) on the growth, antioxidant capacity, selenium content, selenium speciation, and meat quality of grass carp. Ten diets were prepared, including a basal diet (BD) and three concentrations (0.1, 0.3, and 0.9 mg/kg) of SeNP, selenite, and SeMet. A total of 600 fish (250.79 ± 1.57 g) were randomly assigned to 30 tanks (3 tanks/group). Fish were fed the experimental diet three times daily for 60 d. In this study, SeNP most significantly promoted the growth and antioxidant capacity of grass carp, with 0.3 mg/kg SeNP identified as the optimal additive concentration. Additionally, SeNP demonstrated equally excellent bioavailability as SeMet and significantly increased the content of SeMet in grass carp (Ctenopharyngodon idella) muscle. Furthermore, compared to SeMet and selenite, dietary SeNP could more significantly enhance the content of selenocysteine (SeCys2) and methylselenocysteine (MeSeCys) in grass carp muscle tissue. In addition, we have demonstrated that SeCys2 and MeSeCys promote apoptosis of cancer cells (HeLa) through the mitochondrial apoptotic pathway (involving Bax and Bcl-2). Furthermore, as an additive, 0.3 mg/kg SeNP significantly improved the flesh quality of grass carp by reducing crude fat and heavy metal content, as well as increasing the levels of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) and the ratio of n-3/n-6 polyunsaturated fatty acid (PUFA). In summary, SeNP is the most suitable additive for producing selenium-enriched fish.

15.
Artículo en Inglés | MEDLINE | ID: mdl-38411766

RESUMEN

Parenting significantly influences youth development, yet there's a dearth of research on measuring parenting among LGBTQIA+ caregivers, or caregivers of LGBTQIA+ children (hereafter LGBTQIA+ families). In this systematic review we identified and evaluated the psychometrics of parenting scales validated for this population. The inclusion criteria encompassed studies with LGBTQIA+ families in major databases and secondary sources, psychometric assessment, and English language. Eight studies validating ten scales measuring parenting practices, parental attitudes, beliefs, and perceptions were identified. Generally, studies reported promising psychometrics, showing evidence of construct validity in all and reliability in seven. However, the review also unveiled crucial gaps: a paucity of scales validated among LGBTQIA+ fathers, and predominantly featured non-Hispanic White participants. Findings underscore the necessity for more inclusive samples that reflect the diversity of LGBTQIA+ families. The validation of parenting scales is crucial for understanding parenting in LGBTQIA+ families and developing parenting interventions to promote their well-being.

16.
Food Chem X ; 21: 101088, 2024 Mar 30.
Artículo en Inglés | MEDLINE | ID: mdl-38226325

RESUMEN

The production of selenium-enriched fish contributes to alleviating selenium deficiency for humans. In this study, selenium nanoparticles (SeNPs) comparable in bioavailability to selenomethionine (SeMet), increased SeMet content in O. macrolepis (Onychostoma macrolepis) muscle. Additionally, dietary SeNPs significantly enhanced selenocysteine (SeCys2) and methylselenocysteine (MeSeCys) levels in O. macrolepis muscle. The effect of SeNPs on selenium speciation in grass carp muscle was consistent with O. macrolepis results. SeCys2 and MeSeCys showed antioxidant capacity in HEK293T cells, indicating enhanced health benefits of Se-enriched fish produced using SeNPs. Furthermore, the addition of 0.3 mg/kg SeNPs significantly improved the flesh quality of O. macrolepis by reducing the content of crude fat and heavy metals, as well as increasing the levels of crude protein, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and the ratio of n-3/n-6 polyunsaturated fatty acids (PUFAs). Therefore, selenium-enriched fish produced from SeNPs is a good source for improving human dietary selenium intake.

17.
Stigma Health ; 8(3): 372-380, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-37789829

RESUMEN

This secondary analysis of a mixed serostatus sample of Black sexual minority men (BSMM) used conditional inference tree methods to explore associations of past-year experienced stigma and psychosocial syndemic conditions. Experienced stigmas were attributed to race, sexuality, socioeconomic status, HIV status or some "other" reason. Psychosocial syndemic conditions studied included physical assault, intimate partner violence, polysubstance use, and depression symptomology. Data are from Promoting Our Worth, Equality and Resilience (POWER), a serial, cross-sectional study conducted between 2014-2017 (N=4430). Experiences of multiple stigmas were reported by n=938 (22.1%) of BSMM. Conditional inference tree results revealed that HIV-related stigma and its intersection with "other" stigma showed the greatest variance in psychosocial condition prevalence. Our findings suggest that when developing intercategorical intersectional analyses with BSMM, there are important stigmas for BSMM beyond those attributed to race, sexuality, and SES, particularly intersecting with HIV-related stigma. Conditional inference tree analysis shows promise in quantitative explorations of intersectional stigma with BSMM, but will benefit from the inclusion of additional forms of stigma, which should be considered by the field moving forward.

18.
Vaccine ; 41(48): 7072-7075, 2023 Nov 22.
Artículo en Inglés | MEDLINE | ID: mdl-37833125

RESUMEN

OBJECTIVES: Understanding vaccine hesitancy among parents is of emerging interest and of rising importance for promoting vaccine uptake to prevent pediatric illness. Here, we examine associations between pediatric vaccine refusal and parental symptoms of anxiety. METHODS: Our cross-sectional survey assessed pediatric vaccine refusal in 1699 parents in a US national sample. Participants completed a sociodemographic questionnaire, the Vaccine Hesitancy Scale, and symptoms of anxiety (GAD-7). RESULTS: The prevalence of pediatric vaccine refusal was 15.5 %. Parent symptoms of anxiety were related to vaccine refusal (OR = 1.07 [1.03, 1.10]). Mild (1.88 [1.39, 2.54], p <.001) and clinically significant (2.14 [1.39, 3.31], p <.001) symptoms of anxiety were also related to pediatric vaccine refusal. Parental anxiety was also associated with perceived risks of vaccines and reduced confidence. CONCLUSIONS: Findings highlight the need to consider parental anxiety in the development of public health interventions that address substandard pediatric vaccine uptake.


Asunto(s)
Vacunación , Vacunas , Humanos , Niño , Estudios Transversales , Padres , Negativa a la Vacunación , Ansiedad , Conocimientos, Actitudes y Práctica en Salud , Aceptación de la Atención de Salud
19.
Adv Mater ; 35(47): e2304638, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37681325

RESUMEN

Chronic diabetic wounds are a significant global healthcare challenge. Current strategies, such as biomaterials, cell therapies, and medical devices, however, only target a few pathological features and have limited efficacy. A powerful platform technology combining magneto-responsive hydrogel, cells, and wireless magneto-induced dynamic mechanical stimulation (MDMS) is developed to accelerate diabetic wound healing. The hydrogel encapsulates U.S. Food and Drug Administration (FDA)-approved fibroblasts and keratinocytes to achieve ∼3-fold better wound closure in a diabetic mouse model. MDMS acts as a nongenetic mechano-rheostat to activate fibroblasts, resulting in ∼240% better proliferation, ∼220% more collagen deposition, and improved keratinocyte paracrine profiles via the Ras/MEK/ERK pathway to boost angiogenesis. The magneto-responsive property also enables on-demand insulin release for spatiotemporal glucose regulation through increasing network deformation and interstitial flow. By mining scRNAseq data, a mechanosensitive fibroblast subpopulation is identified that can be mechanically tuned for enhanced proliferation and collagen production, maximizing therapeutic impact. The "all-in-one" system addresses major pathological factors associated with diabetic wounds in a single platform, with potential applications for other challenging wound types.


Asunto(s)
Diabetes Mellitus , Cicatrización de Heridas , Ratones , Animales , Diabetes Mellitus/terapia , Diabetes Mellitus/patología , Queratinocitos , Colágeno , Hidrogeles/farmacología
20.
Artículo en Inglés | MEDLINE | ID: mdl-37659443

RESUMEN

BACKGROUND: Social anxiety disorder (SAD) and major depressive disorder (MDD) are characterized by behavioral abnormalities in motivational systems, namely the behavioral inhibition system (BIS) and behavioral activation system (BAS). Limited studies indicate brain volume in regions that support emotion, learning/memory, reward, and cognitive functions relate to BIS/BAS. To increase understanding of BIS/BAS, the current study used a network approach. METHODS: Patients with SAD (n = 59), patients with MDD (n = 64), and healthy control participants (n = 36) completed a BIS/BAS questionnaire and structural magnetic resonance imaging scans; volumetric regions of interest comprised cortical and limbic structures based on previous BIS/BAS studies. A Bayesian Gaussian graphical model was used for each diagnostic group, and groups were compared. Among network metrics, bridge centrality was of primary interest. Analysis of variance evaluated BIS/BAS behaviors between groups. RESULTS: Bridge centrality showed hippocampus positively related to BAS, but not to BIS, in the MDD group; no findings were observed in the SAD or control groups. Yet, network density (i.e., overall strength of relationships between variables) and degree centrality (i.e., overall relationship between one variable to all other variables) showed that cortical (e.g., precuneus, medial orbitofrontal) and subcortical (e.g., amygdala, hippocampus) regions differed between diagnostic groups. Analysis of variance results showed BAS was lower in the MDD/SAD groups compared with the control group, while BIS was higher in the SAD group relative to the MDD group, which in turn was higher than the control group. CONCLUSIONS: Preliminary findings indicate that network-level aberrations may underlie motivational abnormalities in MDD and SAD. Evidence of BIS/BAS differences builds on previous work that points to shared and distinct motivational differences in internalizing psychopathologies.

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