Reduced Cortical Thickness Correlates of Cognitive Dysfunction in Post-COVID-19 Condition: Insights from a Long-Term Follow-up.

BACKGROUND AND PURPOSE: There is a paucity of data on long-term neuroimaging findings from individuals who have developed the post-coronavirus 2019 (COVID-19) condition. Only 2 studies have investigated the correlations between cognitive assessment results and structural MR imaging in this population. This study aimed to elucidate the long-term cognitive outcomes of participants with the post-COVID-19 condition and to correlate these cognitive findings with structural MR imaging data in the post-COVID-19 condition. MATERIALS AND METHODS: A cohort of 53 participants with the post-COVID-19 condition underwent 3T brain MR imaging with T1 and FLAIR sequences obtained a median of 1.8 years after Severe Acute Respiratory Syndrome coronavirus 2 (SARS-CoV-2) infection. A comprehensive neuropsychological battery was used to assess several cognitive domains in the same individuals. Correlations between cognitive domains and whole-brain voxel-based morphometry were performed. Different ROIs from FreeSurfer were used to perform the same correlations with other neuroimaging features. RESULTS: According to the Frascati criteria, more than one-half of the participants had deficits in the attentional (55%, n = 29) and executive (59%, n = 31) domains, while 40% (n = 21) had impairment in the memory domain. Only 1 participant (1.89%) showed problems in the visuospatial and visuoconstructive domains. We observed that reduced cortical thickness in the left parahippocampal region (t(48) = 2.28, P = .03) and the right caudal-middle-frontal region (t(48) = 2.20, P = .03) was positively correlated with the memory domain. CONCLUSIONS: Our findings suggest that cognitive impairment in individuals with the post-COVID-19 condition is associated with long-term alterations in the structure of the brain. These macrostructural changes may provide insight into the nature of cognitive symptoms.

Predictive factors of the psychological impact of the COVID-19 pandemic on university students: a study in six Ibero-American countries / Factores predictivos del impacto psicológico de la pandemia de COVID-19 en estudiantes universitarios: un estudio en seis países iberoamericanos

Background/Objective: During Covid-19, high prevalences of anxiety and depression were reported among university students, suggesting that they may be at higher risk than the general population of developing psychological disorders in lockdown situations. This study aimed to analyze how sociocultural factors and individual differences contributed to explaining the psychological impact of the pandemic among Ibero-American university students from Argentina, Colombia, Ecuador, Spain, Mexico, and Uruguay. Method: The study was carried out on 7601 university students (72% women). Data were collected through an online questionnaire that measured anxiety (GAD-2), depression (PHQ-2), somatic symptoms (SSQ-5), post-traumatic growth (PTGI), loneliness (UCLS), personality (NEO-FFI), Resilience (CD-RISC-2), Perceived Competences (PCS) and sociodemographic data. Descriptive statistics and multiple linear regression model were performed. Results: Analysis indicated a high prevalence (46.15%) of distress among university students, regardless of country and significantly higher than in the general population (28.27%). Greater feelings of loneliness and greater neuroticism were significantly associated with anxiety, depression, and somatization. Likewise, male gender and higher levels of resilience were found to be protective factors, while post-traumatic growth was also higher in men and was associated with higher levels of resilience, perceived competence, and responsibility. Conclusions: The results suggest the need to consider individual risk factors such as being a woman, presenting higher levels of neuroticism and loneliness in understanding the psychological impact of the pandemic on university students. It is concluded that universities should offer specific interventions to address mental health problems and manage the added complications of crisis events on the health of students.(AU)

Antecedentes/Objetivo: Durante el Covid-19, se informaron altas prevalencias de ansiedad y depresión entre estudiantes universitarios, lo que sugiere que pueden tener un mayor riesgo que la población general de desarrollar trastornos psicológicos en situaciones de encierro. Este estudio tuvo como objetivo analizar cómo los factores socioculturales y las diferencias individuales contribuyeron a explicar el impacto psicológico de la pandemia entre estudiantes universitarios iberoamericanos de Argentina, Colombia, Ecuador, España, México y Uruguay. Método: El estudio se realizó en 7601 estudiantes universitarios (72% mujeres). Los datos fueron recolectados a través de un cuestionario en línea que midió ansiedad (GAD-2), depresión (PHQ-2), síntomas somáticos (SSQ-5), crecimiento postraumático (PTGI), soledad (UCLS), personalidad (NEO-FFI), Resiliencia (CD-RISC-2), Competencia Percibida (PCS) y datos sociodemográficos. Se realizó estadística descriptiva y modelo de regresión lineal múltiple. Resultados: Los análisis indicaron una alta prevalencia (46,15%) de angustia entre los estudiantes universitarios, independientemente del país y significativamente mayor que en la población general (28,27%). Mayores sentimientos de soledad y mayor neuroticismo se asociaron significativamente con ansiedad, depresión y somatización. Asimismo, el género masculino y mayores niveles de resiliencia resultaron ser factores protectores, mientras que el crecimiento postraumático también fue mayor en los hombres y se asoció con mayores niveles de resiliencia, competencia percibida y responsabilidad. Conclusiones: Los resultados sugieren la necesidad de considerar factores de riesgo individuales como ser mujer, presentar mayores niveles de neuroticismo y soledad en la comprensión del impacto psicológico de la pandemia en estudiantes universitarios. Se concluye que las universidades deben ofrecer intervenciones específicas para abordar los problemas de salud mental y manejar las complicaciones añadidas de los eventos de crisis sobre la salud de los estudiantes.(AU)

Immune-inflammatory and hypothalamic-pituitary-adrenal axis biomarkers are altered in patients with non-specific low back pain: A systematic review.

This systematic review aimed to investigate immune-inflammatory and hypothalamic-pituitary-adrenal (HPA) axis biomarkers in individuals with non-specific low back pain (NSLBP) compared to healthy control. The search was performed in five databases until 4 November 2021. Two reviewers independently conducted screenings, data extraction, risk of bias, and methodological quality assessment of 14 unique studies. All studies reported the source of the fluid analyzed: nine studies used serum, two used plasma, one used serum and plasma, and two studies used salivary cortisol. We found preliminary and limited evidence (only one study for each biomarker) of increased levels in growth differentiation factor 15 (GDF-15), interleukin-23 (IL-23), transforming growth factor-beta (TGF-ß), and soluble tumor necrosis factor receptor 1 (sTNF-R1) in NSLBP. Inconsistent and limited evidence was identified for interleukin-10 (IL-10). Although C-reactive protein (CRP), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α) levels appear to increase in NSLBP, only one study per each biomarker reported statistically significant differences. Interleukin-1 beta (IL-1ß), interleukin-17 (IL-17), interferon gamma (IFN-γ), and high-sensitivity CRP (hsCRP) showed no significant differences. Regarding cortisol, one study showed a significant increase and another a significant decrease. More robust evidence between GDF-15, IL-23, TGF-ß, and sTNF-R1 with NSLBP is needed. Moreover, contrary to the findings reported in previous studies, when comparing results exclusively with healthy control, insufficient robust evidence for IL-6, TNF-α, and CRP was found in NSLBP. In addition, cortisol response (HPA-related biomarker) showed a dysregulated functioning in NSLBP, with incongruent evidence regarding its directionality. Therefore, our effort is to find adjusted evidence to conclude which immune-inflammatory and HPA axis biomarkers are altered in NSLBP and how much their levels are affected. Systematic Review Registration: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42020176153, identifier CRD42020176153.

Social Inequities in the Impact of COVID-19 Lockdown Measures on the Mental Health of a Large Sample of the Colombian Population (PSY-COVID Study).

The identification of general population groups particularly vulnerable to the impact of COVID-19 lockdown measures on mental health and the development of healthcare policies are priority challenges in the current and future pandemics. This study aimed to identify the personal and social determinants of the impact of COVID-19 lockdown measures on mental health in a large sample of the Colombian population. In this cross-sectional study, an anonymous online survey was answered by 18,061 participants from the general population residing in Colombia during the first wave of the COVID-19 outbreak (from 20 May to 20 June 2020). The risk of depression, anxiety, and somatization disorders were measured using the Patient Health Questionnaire (PHQ-2), Generalized Anxiety Disorder Scale (GAD-2), and Somatic Symptom Questionnaire (SSQ-5), respectively. Overall, 35% of participants showed risk of depression, 29% of anxiety, and 31% of somatization. According to the analysis of social determinants of health, the most affected groups were people with low incomes, students, and young adults (18-29 years). Specifically, low-income young females were the most at-risk population group. These findings show how the lockdown measures affected the general population's mental health in Colombia and highlight some social risk factors in health.