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Rodríguez Fernández, Raquel

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Rodríguez Fernández
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Raquel
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2019 - 201912020 - 20234
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Mostrando 1 - 5 de 5
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    Sex-related differences in the associations between diurnal cortisol pattern and social and emotional loneliness in older adults
    (Frontiers Media, 2023) Utrera Martínez, Lucía; Sampedro Piquero, Patricia; Díaz Mardomingo, María del Carmen; Baliyan, Shishir; García Herranz, Sara; Suárez Falcón, Juan Carlos; Rodríguez Fernández, Raquel; Valencia Jiménez, Azucena; Venero Núñez, César
    Loneliness is a distressful feeling that can affect mental and physical health, particularly among older adults. Cortisol, the primary hormone of the Hypothalamic-Pituitary-Adrenal axis (HPA-axis), may act as a biological transducer through which loneliness affects health. While most previous studies have evaluated the association between loneliness, as a unidimensional construct, and diurnal cortisol pattern, no research has examined this relationship discriminating between social and emotional loneliness in older adults. As sex differences in the negative mental health outcomes of loneliness have been reported, we also investigated whether diurnal cortisol indices and loneliness associations occur in a sex-specific manner. We analyzed the diurnal cortisol- pattern in 142 community-dwelling, non-depressed, Caucasian older adults (55,6% female) aged 60-90. Social and emotional (family and romantic) loneliness scores were assessed using the Spanish version of the Social and Emotional Loneliness Scale for Adults (SELSA). Five salivary cortisol samples were used to capture key features of the diurnal cortisol pattern, including: awakening and bedtime cortisol levels, awakening response (CAR), post-awakening cortisol output (post-awakening cortisol [i.e., the area under the curve with reference to the ground: AUCG]), total diurnal cortisol release (AUCG), and diurnal cortisol slope (DCS). After controlling for sociodemographic variables, the hierarchical linear multiple regression analyses revealed that in male older adults, higher scores on social and family loneliness were associated with elevated awakening cortisol levels, total diurnal cortisol output, and a steeper diurnal cortisol slope (DCS). However, these associations were not observed in female older adults. In addition, feelings of romantic loneliness were positively associated with bedtime cortisol levels and AUCG in older males. Multilevel growth curve modeling showed that experiencing more social and emotional loneliness predicted higher diurnal cortisol output throughout the day in older male adults. The presence of sex differences in the relationship between cortisol indices and loneliness among older adults holds particular significance for diagnostic and screening procedures. Combining loneliness scales as screening tools with diurnal cortisol measures has the potential to be an effective and cost-efficient approach in identifying higher-risk individuals at early stages
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    Systemic administration of a fibroblast growth factor receptor 1 agonist rescues the cognitive deficit in aged socially isolated rats
    (Elsevier, 2019-03-29) Pereda Pérez, Inmaculada; Valencia Jiménez, Azucena; Baliyan, Shishir; Núñez, Ángel; Sanz García, Ancor; Rodríguez Fernández, Raquel; Esteban, José Antonio; Venero Núñez, César; Zamora Crespo, Berta; Elsevier; https://orcid.org/0000-0002-8013-4812; https://orcid.org/0000-0002-5024-5108
    Social isolation predominantly occurs in elderly people and it is strongly associated with cognitive decline. However, the mechanisms that produce isolation-related cognitive dysfunction during aging remain unclear. Here, we evaluated the cognitive, electrophysiological, and morphological effects of short- (4 weeks) and long-term (12 weeks) social isolation in aged male Wistar rats. Long-term but not short-term social isolation increased the plasma corticosterone levels and impaired spatial memory in the Morris water maze. Moreover, isolated animals displayed dampened hippocampal long-term potentiation in vivo, both in the dentate gyrus (DG) and CA1, as well as a specific reduction in the volume of the stratum oriens and spine density in CA1. Interestingly, social isolation induced a transient increase in hippocampal basic fibroblast growth factor (FGF2), whereas fibroblast growth factor receptor 1 (FGFR1) levels only increased after long-term isolation. Importantly, subchronic systemic administration of FGL, a synthetic peptide that activates FGFR1, rescued spatial memory in long-term isolated rats. These findings provide new insights into the neurobiological mechanisms underlying the detrimental effects on memory of chronic social isolation in the aged.
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    Validation of the Spanish version of the Memory Failures of Everyday (MFE) questionnaire in older adults using Rasch analysis
    (Wiley, 2022-02-06) Rodríguez Blázquez, Carmen; Ayala García, Alba; Forjaz, Maria João; García Herranz, Sara; Venero Núñez, César; Rodríguez Fernández, Raquel; Díaz Mardomingo, María del Carmen
    Aim The Memory Failures of Everyday (MFE) is a widely used instrument for assessing memory failure. The aim of the study was to analyze the MFE items using the Rasch model in a sample of cognitively older adults in Spain. Methods A cross-sectional validation study in a sample of 214 healthy people aged ≥60 years who used centers for older people in Madrid (Spain). The MFE for the assessment of memory complaints was used. The following properties of the Rasch model were assessed: data fit, reliability, unidimensionality, local dependence and lack of differential item functioning by gender, age and marital status. Results The MFE showed a good fit to the Rasch model (χ2(140) = 160.2; P = 0.116) and high reliability (person separation index = 0.808). The questionnaire was unidimensional (6.54% t-test; IC binomial = 0.036–0.095). The items showed lack of local dependence between them and differential item functioning. The MFE scores were transformed into linear interval scores with a median of 44.31 and an observed range of 17.9–89.2 (theoretical range: 0–100). Conclusions The MFE is a unidimensional, reliable instrument to assess memory complaints in cognitively healthy older adults in Spain, with usefulness in clinical research and practice. The construct validity of the MFE linear score could not be fully confirmed and this deserves further investigation.
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    Normative data for the for Verbal Fluency, Trail Making and Rey-Osterrieth Complex Figure tests on monolingual Spanish-speaking older adults
    (Oxford University Press, 2022-01-03) García Herranz, Sara; Díaz Mardomingo, María del Carmen; Suárez Falcón, Juan Carlos; Rodríguez Fernández, Raquel; Peraita, Herminia; Venero Núñez, César
    Objective This study aimed to generate updated normative data for commonly used tests in neuropsychological assessment applied to older monolingual Spanish-speaking adults: Verbal fluency tests, the Trail Making Test (TMT), and the Rey–Osterrieth complex figure test (ROCF). Method To obtain normative data, 382 cognitively healthy 60- to 90-year-old Spanish monolingual participants from the Autonomous Community of Madrid (Spain) with 0–22 years education were assessed using an overlapping interval strategy that involved cell and midpoint techniques, and that assessed the influence of age, education, and sex. Results Age and education were associated with the scores in the verbal fluency tests, TMT, and ROCF, whereas sex only significantly affected the TMT results. Age-adjusted scaled scores (SSA) based on percentile ranks were also converted into age–education scaled scores (SSAE) using a linear regression model. In addition, tables with the relevant adjustments for sex are provided for TMT-A and TMT-B. Conclusions Thus, this study provides updated, uniform normative data for widely used neuropsychological tests on older Spanish adults. The normative procedure followed helps to make consistent comparisons when using these neuropsychological tests, which will improve the interpretation of the data obtained when these tools are employed, reducing the risk of misdiagnosing cognitive impairment in older adults.
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    Normative data for the Spanish version of the California Verbal Learning Test (TAVEC) from older adults
    (American Psychological Association, 2022) García Herranz, Sara; Díaz Mardomingo, María del Carmen; Suárez Falcón, Juan Carlos; Rodríguez Fernández, Raquel; Peraita Adrados, Herminia; Venero Núñez, César
    The aim of this study was to establish normative data for the Spanish version of the California Verbal Learning Test, the Test de Aprendizaje Verbal España-Complutense (TAVEC). Through different subtests, the TAVEC allows verbal learning and episodic memory to be evaluated, an assessment that was carried out on a sample of 382 cognitive healthy Spanish individuals aged 60–90 years old. Unlike the participant’s educational level, their age and sex significantly influenced performance in the TAVEC. We provide tables that allow the scaled scores obtained with this test to be adjusted for age and other tables with the relevant adjustments for sex. The normative data obtained in this study will help more precisely interpret the performance of older Spanish adults in the TAVEC, enhancing the utility of this neuropsychological test to evaluate verbal learning and episodic memory in clinical settings and in relation to healthy aging. (PsycInfo Database Record (c) 2022 APA, all rights reserved)