Pilar Santamarina Perez

Dr. Pilar Santamarina Perez

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Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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16 January 2020 in Suicide and Life-Threatening Behavior
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Journal Article
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PPPilar Santamarina Perez
Pilar Santamarina Perez
IMIria Mendez
Iria Mendez
Manpreet K. SinghManpreet K. Singh
Manpreet K. Singh
MBMichele Berk
Michele Berk
MPMarisol Picado
Marisol Picado
SRSoledad Romero
Soledad Romero

1 August 2019 in Journal of Child and Adolescent Psychopharmacology
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Journal Article
Closed access
PPPilar Santamarina Perez
Pilar Santamarina Perez
SRSoledad Romero
Soledad Romero
IMIria Mendez
Iria Mendez
SLSara M. Leslie
Sara M. Leslie
MPMary M. Packer
Mary M. Packer
MSManpreet K. Singh
Manpreet K. Singh
Objectives: Key neurobiological factors contribute to vulnerability to nonsuicidal self-injury (NSSI) among adolescents and how they respond to treatment targeted to reduce such behaviors. This study aims to examine differences in intrinsic functional connectivity between adolescents with NSSI and healthy controls (HCs) and to identify baseline connectivity markers that predict improvements in NSSI after psychotherapy. Methods: Adolescents aged 12–17 (n = 24) with repetitive NSSI along with demographically similar HCs (n = 16) underwent resting-state functional MRI scanning after which patients received up to 4 months of psychological treatment. A seed-based approach was used to examine baseline between-group differences in intrinsic functional connectivity of the amygdala and the medial prefrontal cortex (mPFC). Further analyses examined the associations between intrinsic functional connectivity at baseline and improvement in NSSI after psychological treatment. Results: Compared with HCs, adolescents with NSSI showed significantly reduced connectivity between the amygdala and the anterior cingulate cortex, subcallosal cortex, and paracingulate gyrus, as well as between the amygdala and a cluster encompassing the right planum temporale and right insula. Adolescents with NSSI, compared with HCs, also showed reduced connectivity between the mPFC and two clusters: one located in the precentral and postcentral gyri and another in the left insula. After treatment, 50% of patients reported fewer NSSI episodes compared to baseline, which was considered as improvement. Stronger negative amygdala-prefrontal connectivity was associated with greater posttreatment improvement in NSSI. Conclusions: Adolescents with NSSI may have aberrant amygdala and mPFC connectivity compared with HCs. Furthermore, stronger baseline negative amygdala-prefrontal connectivity may predict greater improvement in NSSI after psychological intervention. Given that no prior study has used resting-state functional connectivity to predict response to psychological treatment in adolescents with NSSI, replication of these findings is needed.

14 November 2021 in Journal of Clinical Medicine
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LFLaia Marques Feixa
Laia Marques Feixa
JHJorge Moya Higueras
Jorge Moya Higueras
SRSoledad Romero
Soledad Romero
PPPilar Santamarina Perez
Pilar Santamarina Perez
MRMarta Rapado-Castro
Marta Rapado-Castro
EGEPI-Young Stress GROUP
EPI-Young Stress GROUP
Childhood maltreatment (CM) is associated with increased non-suicidal self-injury (NSSI) and suicidal behavior (SB), independently of demographic and mental health conditions. Self-Trauma Theory and Linehan’s Biopsychosocial Model might explain the emergence of Borderline Personality Disorder (BPD) symptoms as mediators of the association between CM and the risk of SB. However, little is known regarding such relationships when the exposure is recent for young persons. Here, we study 187 youths aged 7–17, with or without mental disorders. We explore CM experiences (considering the severity and frequency of different forms of neglect and abuse), recent stressful life events (SLEs), some BPD traits (emotion dysregulation, intense anger and impulsivity), and the risk of SB (including NSSI, suicide threat, suicide ideation, suicide plan and suicide attempt). We study the direct and mediating relationships between these variables via a structural equation analysis using the statistical software package EQS. Our findings suggest that youths exposed to more severe/frequent CM have more prominent BPD traits, and are more likely to have experienced recent SLEs. In turn, BPD traits increase the risk of SLEs. However, only emotion dysregulation and recent SLEs were found to be correlated with SB. Therefore, targeted interventions on emotion dysregulation are necessary to prevent NSSI or SB in children and adolescents exposed to CM, as is the minimization of further SLEs.

13 August 2013 in Applied Neuropsychology: Adult
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Journal Article
Open access
PPPilar Santamarina Perez
Pilar Santamarina Perez
​Francisco José Eiroa-Orosa​Francisco José Eiroa-Orosa
​Francisco José Eiroa-Orosa
ARAmanda Rodriguez-Urrutia
Amanda Rodriguez-Urrutia
AQAdil Qureshi
Adil Qureshi
JAJose Alegre
Jose Alegre
This study examines neuropsychological impairments associated with chronic fatigue syndrome (CFS) and explores their association with related clinical factors. Sixty-eight women with CFS were assessed with a neuropsychological battery. Raw scores were adjusted for age and gender and were converted to T scores according to normative data extracted from a local sample of 250 healthy subjects. Neuropsychological dysfunction was calculated using summary impairment indexes (proportion of test scores outside normal limits—T score <40—for each cognitive domain). Finally, a linear regression was calculated to identify predictors of cognitive deficit, including intrinsic factors of the disease (level of fatigue and length of illness) and extrinsic factors (emotional factors, age, and education). Approximately 50% of scores showed impairment in attention and motor functioning, and nearly 40% showed impairment in speed information processing and executive functioning. Fatigue predicted attention and executive functioning impairment, and emotional factors predicted verbal memory dysfunction. According to our findings, cognitive dysfunction in CFS could be explained by pathophysiological processes of the disease. One implication of this would be the need to identify homogeneous subgroups of patients with CFS by taking into account common factors, which, in turn, would help to identify more specific cognitive profiles, which could then serve to implement appropriate therapeutic measures accordingly.

19 October 2022 in Animals
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Journal Article
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EGElias Guillen Guzman
Elias Guillen Guzman
LRLaia Sastre Rodriguez
Laia Sastre Rodriguez
PPPilar Santamarina Perez
Pilar Santamarina Perez
LBLaura Hermida Barros
Laura Hermida Barros
MGMarta Garcia Giralt
Marta Garcia Giralt
ALAstrid Morer Liñan
Astrid Morer Liñan
Dog-assisted therapy (DAT) has shown benefits in people with mental health disorders. A child psychiatric day hospital would be a suitable setting to implement DAT and evaluate the benefits in a pediatric population. Methods: Mixed methods research in a naturalistic setting was considered in this pre-post quantitative study including 23 children under 13 treated in a day hospital over 2 years. Quantitative analysis included the number of emotional and behavioral outbursts and attendance rate and self-control and social impairment questionnaires completed by family members and therapists. In the qualitative study, the experiences of 12 mental health professionals involved in DAT were documented through semi-structured interviews. Results: On DAT days, there were fewer emotional and behavioral outbursts and higher attendance. Significant differences were obtained between pre- and post-test scores on the SCRS and the SRS-2 completed by the therapists, while no significant differences were obtained on the questionnaires completed by the parents. Observations based on the qualitative study were as follows: (1) DAT improves emotional self-regulation; (2) DAT could facilitate the work of therapists in day hospitals; (3) health professionals displayed uncertainty due to a lack of familiarity with DAT. Conclusions: DAT improved emotional self-regulation, attendance rate and self-control and social response in children with mental disorders attending a day hospital.

1 July 2011 in Applied Neuropsychology
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Journal Article
Open access
PPPilar Santamarina Perez
Pilar Santamarina Perez
​Francisco José Eiroa-Orosa​Francisco José Eiroa-Orosa
​Francisco José Eiroa-Orosa
VFVerónica Freniche
Verónica Freniche
AMAurea Moreno-Mayos
Aurea Moreno-Mayos
JAJose Alegre
Jose Alegre
CJCarlos Jacas
Carlos Jacas
Neuropsychological studies have shown cognitive impairment in chronic fatigue syndrome (CFS), particularly in information-processing speed. The aim of this study was to examine the evolution of cognitive impairment in CFS. The evolution is one of the most disabling aspects of the CFS, and it has received little attention in the literature. Fifty-six women with CFS were assessed with neuropsychological tests. Patients were divided into three groups based on the duration of the disease. There were no differences between groups in terms of cognitive function. The cognitive impairment in CFS was not found to be more severe with longer disease duration. These data suggest that there is no progressive cognitive impairment in patients with CFS. Therefore, the cognitive deficits in CFS should be treated with cognitive rehabilitation programs focused on improving emotional distress associated to the illness and on promoting functional abilities.