Stress in pregnancy - Implications for fetal BDNF in amniotic fluid at birth.

Introduction: At the maternal-fetal interface in pregnancy, stress during pregnancy can lead to an increased vulnerability to later psychopathology of the fetus. Potential mediators of this association have scarcely been studied and may include early alterations of fetal brain-derived neurotrophic factor (BDNF). Amniotic fluid is of particular interest for effects on fetal endocrine alterations, as the assessment in amniotic fluid allows for measurements over a time integral. This study hypothesized that maternal psychometrics, socioeconomic status and glucocorticoids are related to BDNF levels in amniotic fluid at birth. The association of fetal BDNF with newborn anthropometrics was tested. Methods: Women near term who underwent elective cesarean section and their newborns were investigated (n = 37). Maternal psychometrics, socioeconomic status and glucocorticoids (the sum of cortisol and cortisone) in amniotic fluid at birth were analyzed for an association with fetal BDNF in amniotic fluid at birth. Newborn anthropometrics were assessed by length, weight, head circumference and gestational age at birth. Results: In bivariate analysis, maternal psychometrics and socioeconomic status were not related to fetal BDNF in amniotic fluid at birth. The sum of cortisol and cortisone related to increased fetal BDNF in amniotic fluid at birth (r = 0.745, p < 0.001). BDNF in amniotic fluid was associated negatively with fetal birth weight per gestational age (r = -0.519, p < 0.001), length per gestational age (r = -0.374, p = 0.023), head circumference per gestational age (r = -0.508, p = 0.001), but not with gestational age at birth. In multiple regression analysis, the sum of cortisol and cortisone (p < 0.001) and birth weight per gestational age (p = 0.012) related to higher fetal BDNF levels in amniotic fluid at birth (R2 = 0.740, p < 0.001) when controlling for fetal sex and maternal age. Head circumference per gestational age predicted fetal BDNF with borderline significance (p = 0.058) when controlling for confounders. Conclusion: Glucocorticoids in amniotic fluid were positively associated with high fetal BDNF at birth, which may be an adaptive fetal response. Maternal psychological variables and socioeconomic status did not link to fetal BDNF. Birth weight and head circumference per gestational age were inversely associated with fetal BDNF at birth, which may represent a compensatory upregulation of BDNF in fetuses with low anthropometrics. Longitudinal studies are needed to assess the role of stress during pregnancy on later offspring development. The analysis of additional fetal growth factors and inflammation upon maternal stress in further biomaterials such as the placenta is warranted, to understand mechanistic alterations of how maternal stress links to fetal development and an increased vulnerability for psychopathology.

Medical conditions, symptoms of anxiety, and depression during the COVID-19 pandemic in a population sample of Lima, Peru.

INTRODUCTION: This study aims to determine differences between the number of underlying medical conditions, depression, and anxiety, when controlling for the covariates of age, sex, and completed education. METHODS: Participants (n = 484) indicated the number of medical conditions present during the survey, also including the PHQ-9 and GAD-7, to assess depression and anxiety, respectively. RESULTS: Differences were found between groups of medical conditions and the combined values of PHQ-9 and GAD-7 after controlling for the covariates mentioned above (F4,954 = 5.78; Wilks' Λ = 0.95; P < 0.0005). The univariate tests showed differences for PHQ-9 (F2,478 = 8.70; P < 0.0005) and GAD-7 (F2,478 = 11.16; P < 0.0005) between the 3 groups. Finally, post-hoc analysis showed differences between participants with one medical condition and with no medical condition (PHQ-9: MD = 1.82; 95%CI, 0.25-3.40; GAD-7: MD = 1.73; 95%CI, 0.55-2.91), and between participants with more than one medical condition and participants with no medical condition (PHQ-9: MD = 3.10; 95%CI, 1.11-5.10; GAD-7: MD = 2.46; 95%CI, 0.97-3.95). CONCLUSIONS: Our results suggest that people who had a medical condition during the COVID-19 pandemic were more prone to developing severe symptoms of anxiety and depression.

Association between rTMS-induced changes in inflammatory markers and improvement in psychiatric diseases: a systematic review.

BACKGROUND: Repetitive transcranial magnetic stimulation (rTMS) has recently gained relevance in treating different psychiatric disorders. Limited evidence suggests that the beneficial effects of rTMS on psychopathology could be at least partly mediated through changes in inflammatory response. This systematic review summarizes the literature on whether rTMS can modulate inflammatory markers and thus positively influence the course of psychiatric illnesses. MATERIALS AND METHODS: A systematic review of rTMS and inflammatory markers in psychiatric diseases was conducted according to PRISMA guidelines. Information on the association between rTMS treatment response and changes of inflammatory markers was extracted. The quality of the studies was assessed using the National Heart, Lung, and Blood Institute for human studies and the Systematic Review Center for Laboratory Animal Experimentation for animal studies. RESULTS: This review includes 17 studies (2 animal and 15 human studies) on the relationship between rTMS treatment response and changes of inflammatory markers. Positive changes in microglial activity and anti-inflammatory effects were associated with behavioral improvement in animal models of depression. However, these findings have not been consistently replicated in human studies focusing on treatment-resistant depression. While several studies reported rTMS-induced alterations in peripheral inflammatory markers, only two could demonstrate their association to clinical treatment response. Notably, most studies showed poor or moderate quality in the bias assessment. CONCLUSIONS: While certain human studies suggest an association between rTMS-induced anti-inflammatory effects and improvement in psychopathology, heterogeneity, and underpowered analyses constrain the generalizability of these results. The discrepancy between animal and human findings highlights the need for larger, standardized human studies. TRIAL REGISTRATION: (PROSPERO Registration: CRD42023492732).

Baseline monocyte count predicts symptom improvement during intravenous ketamine therapy in treatment-resistant depression: a single-arm open-label observational study.

Background: Neuroinflammatory processes in depression are associated with treatment resistance to conventional antidepressants. Ketamine is an effective new therapeutic option for treatment-resistant depression (TRD). Its well-established immunomodulatory properties are hypothesized to mediate its antidepressant effect. In this context, higher levels of inflammation may predict a better treatment response. However, conclusive evidence for this hypothesis is lacking. We thus investigated whether standard peripheral inflammatory cell markers and C-reactive protein (CRP) levels could predict symptom improvement during intravenous ketamine therapy in TRD patients. Methods: 27 participants with TRD were treated with six weight-adjusted intravenous ketamine infusions (0.5 mg/kg bodyweight) over three weeks. Baseline assessments included CRP, absolute monocyte count (AMC), and absolute neutrophil count (ANC). Depression severity was measured using the Montgomery-Åsberg Depression Rating Scale (MADRS) at baseline (D1), after the first (D3) and before the last ketamine infusion (D18). Raters were blinded for the baseline laboratory assessments. Results: 13 participants responded to ketamine treatment, and 8 participants partially responded. Baseline AMC showed a strong negative correlation with MADRS change at D3 (r=-0.57, p=0.002) and at D18 (r =-0.48, p=0.010), indicating that a high baseline AMC was associated with greater symptom improvement. A generalized linear model confirmed the association of baseline AMC with symptom improvement during ketamine treatment when additionally accounting for age, sex, and body mass index. Specifically, baseline AMC demonstrated predictive value to discriminate responders and partial responders from non-responders, but lacked discriminative ability between partial responders and responders. Baseline ANC correlated with the MADRS changes at D3 (r=-0.39, p=0.046), while CRP values did not correlate at all. Conclusions: Our prospective single-arm open-label observational study demonstrated that baseline AMC reliably predicted symptom improvement during intravenous ketamine treatment in TRD patients. AMC could therefore serve as a simple and easily accessible marker for symptom improvement during ketamine therapy in daily clinical practice. Future studies with larger sample sizes and a more detailed longitudinal assessment of AMC subtypes are needed to better understand the specific relationship between monocytes and the neuromodulatory effects of ketamine.

Fetal Sex as Moderating Factor for the Relationship Between Maternal Childhood Trauma and Salivary Kynurenic Acid and Tryptophan in Pregnancy: A Pilot Study.

Traumatic experiences and fetal development influence tryptophan (TRP) and its neuroactive byproduct, kynurenic acid (KYNA). Maternal TRP metabolite levels during pregnancy vary by fetal sex, with higher concentrations in mothers carrying male fetuses. This pilot study aimed to explore the relationship between offspring sex, maternal childhood trauma, and maternal salivary KYNA and TRP levels during pregnancy. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) was used to determine KYNA and TRP levels in maternal saliva samples collected from 35 late-pregnancy participants. Maternal childhood trauma was assessed using the Childhood Trauma Questionnaire, including subscales for emotional abuse, physical abuse, sexual abuse, emotional neglect, and physical neglect. Among mothers pregnant with boys, salivary KYNA significantly correlated with physical and emotional neglect, and salivary TRP with emotional neglect. No significant correlations were found in mothers who delivered female offspring. Significant associations of childhood trauma and offspring sex were found for salivary KYNA but not TRP concentrations. Mothers with higher trauma levels who delivered boys exhibited higher levels of salivary KYNA compared to those with lower trauma levels. Moreover, mothers with higher trauma levels who delivered boys had higher salivary KYNA levels than those with higher trauma levels who delivered girls. This pilot study provides evidence of an association between maternal childhood trauma and TRP metabolism, measured in saliva, especially in mothers pregnant with boys. However, longitudinal studies with larger sample sizes are required to confirm these results.

Stress during pregnancy and fetal serum BDNF in cord blood at birth.

INTRODUCTION: Adverse environments during pregnancy impact neurodevelopment including cognitive abilities of the developing children. The mediating biological alterations are not fully understood. Maternal stress may impact the neurotrophic regulation of the offspring as early as in utero and at birth. Brain-derived neurotrophic factor (BDNF) is essential for neurodevelopment. Short-term higher levels of BDNF in mice upon stressors associate with lower BDNF later in life, which itself associates with depression in animals and humans. Stress including glucocorticoids may impact BDNF, but there is a lack of data at birth. This study investigated if stress near term associates with fetal BDNF at birth in humans. METHODS: Pregnant women near term who underwent primary cesarean sections (at 38.80±0.64 weeks), were included in this study (n=41). Stress at the end of pregnancy was assessed before the cesarean section by determining maternal depressive symptoms (EDPS), maternal state and trait anxiety (STAI-S and STAI-T), maternal prenatal distress (PDQ), stress over the past month (PSS), prenatal attachment to the offspring (PAI), maternal social support (F-Sozu), maternal early life stress (CTQ), socioeconomic status, and the glucocorticoids cortisol and cortisone (n=40) in amniotic fluid at birth. The association with fetal BDNF was analyzed. Cord blood serum of n=34 newborns at birth was analyzed for BDNF and newborn anthropometrics (weight, length and head circumference per gestational age at birth) were assessed. The association of fetal BDNF with anthropometrics at birth was analyzed. RESULTS: After a BDNF-outlier (>3 SD) was removed, higher fetal BDNF associated significantly with maternal depressive symptoms (r=0.398, p=0.022), with lower socioeconomic status as assessed by the average number of people per room in the household (r=0.526, p=0.002) and with borderline significance with net income per person in the household (r=-0.313, p=0.087) in the bivariate analyses. In multivariable analysis, BDNF stayed positively associated with maternal depressive symptoms (ß=0.404, 95% CI [7.057, 306.041], p=0.041) and lower net income per person in the household (ß=-0.562, 95% CI [-914.511, -60.523], p=0.027) when controlling for maternal age, maternal pre-pregnancy BMI, fetal sex and gestational age. Fetal BDNF did not associate with newborn anthropometrics with the outlier removed in bivariate analyses or in multivariable analyses when controlling for maternal BMI and fetal sex. CONCLUSION: Maternal depressive symptoms and lower socioeconomic status associated with higher fetal BDNF when controlling for confounders. Fetal BDNF did not associate with newborn anthropometrics with the outlier removed. Further studies should investigate how early altered BDNF associate with the development and possibly psychopathology of the offspring.

Different Kynurenine Pathway Dysregulation in Systemic Sclerosis in Men and Women.

Systemic sclerosis (SSc), a predominantly female-affected systemic autoimmune disease, requires tailored treatment strategies contingent on organ involvement and symptom severity. Given SSc's inflammatory nature, the involvement of the kynurenine pathway (KP) in its pathophysiology is underexplored. Our study aimed to investigate sex-related differences in KP activation among SSc patients and assess the impact of angiotensin-converting enzyme (ACE) inhibitors and estimated glomerular filtration rate (eGFR) on KP metabolite concentrations. We enrolled 48 SSc patients and 53 healthy controls, quantifying KP metabolites (tryptophan (TRP), kynurenine (KYN), and kynurenic acid (KYNA)) in serum via high-performance liquid chromatography. Separate multivariate analyses of covariance (MANCOVAs) for women and men were performed to ascertain mean differences between patients and healthy controls while correcting for age. For our secondary objective, we conducted a MANCOVA to explore disparities in ACE inhibitor users and non-users among patients, with BMI correction. Our findings revealed decreased TRP concentrations but increased KYNA/TRP ratio and KYN/TRP ratio in both male and female SSc patients compared to their respective controls. Unlike women, SSc males exhibited higher KYN concentrations and decreased KYNA/KYN ratio relative to their controls. Additionally, SSc patients using ACE inhibitors had higher serum KYNA levels than non-users. Notably, we established a significant correlation between eGFR and KYNA in SSc patients. These results indicate differential KP activation in male and female SSc patients, with males demonstrating heightened KP activation. While ACE inhibitors may influence the KP in SSc patients, further research is necessary to comprehensively understand their impact on symptoms and prognosis in the context of these KP alterations.

Cross-cultural validation of the COVID-19 peritraumatic distress index (CPDI) among Spanish and Peruvian populations.

The COVID-19 pandemic has had a significant psychological impact worldwide. The COVID-19 Peritraumatic Distress Index (CPDI) is widely used to assess psychological stress during the COVID-19 pandemic. Although CPDI has been validated in Peru and Spain, no cross-cultural validation studies have been conducted. As an exploratory aim, differences in CPDI factorial scores between the most prevalent medical conditions in the two samples (arterial hypertension, respiratory diseases and anxious-depressive disorders) from a general population of Peru and Spain were investigated. We conducted secondary data analysis with data from Peru and Spain to validate the CPDI in a cross-cultural context. Exploratory factor analysis (EFA) and multigroup confirmatory factor analysis (MGCFA) were performed to evaluate the factor structure and measurement invariance of the CPDI across cultural contexts. Concerning the exploratory analysis, we performed a U-Mann-Whitney test to evaluate differences in the factorial scores in the two samples. This study revealed a two-factor solution (stress and rumination/information) for the CPDI that included 21 of the 24 original items, and consistent with previous studies. The MGCFA demonstrated measurement invariance across cultural contexts (scalar invariance), indicating that the CPDI construct has the same meaning across both groups, regardless of cultural context and language variations of Spanish. Patients with anxious-depressive disorders showed higher CPDI factorial scores for both factors, whereas patients with respiratory diseases were only associated with the stress factor. This study provides evidence for the cross-cultural validity of the CPDI, highlighting its utility as a reliable instrument for assessing psychological stress in the context of COVID-19 across different cultures. These findings have important implications for developing and validating measures to assess psychological distress in different cultural contexts.

LC-MS/MS-based quantification of tryptophan, kynurenine, and kynurenic acid in human placental, fetal membranes, and umbilical cord samples.

Tryptophan breakdown metabolites formed along the kynurenine pathway play a significant role in pregnancy and fetal development. To understand their involvement, it is crucial to quantify the levels of tryptophan (TRP), kynurenine (KYN), and kynurenic acid (KYNA) in relevant biological samples such as the placenta, fetal membranes, and umbilical cord. This study used liquid chromatography-tandem mass spectrometry (LC-MS/MS) to determine TRP, KYN, and KYNA levels. The LC-MS/MS method was optimized for high sensitivity and specificity, demonstrating good reproducibility with a precision of < 10% CV and an accuracy of 85-115%. The lower limit of quantification for both TRP and KYN was 0.5 µg/ml, while for KYNA, it was 0.5 ng/mL. The method exhibited linearity within the examined range of concentrations in the homogenate, ranging from 0.5 to 30 µg/ml for TRP and KYN and from 0.5 to 25 ng/ml for KYNA. Using this method, we found significant differences in the concentrations of these substances in investigated maternal-fetal compartments. Placenta samples exhibited higher KYN and lower KYNA concentrations than the umbilical cord and fetal membrane, indicating a potentially important role for kynurenines in late pregnancy. Collectively, this finding may facilitate further research and provide inside into the involvement of the kynurenine pathway of TRP metabolism in fetal development.

Reduced urine pregnenolone concentration after clinical response in patients with depression: An open-label short-term prospective study.

BACKGROUND: Identifying biological alterations in patients with depression, particularly those that differ between responders and non-responders, is of interest to clinical practice. Biomarker candidates involve neuroactive steroids, including pregnenolone (PREG) and allopregnanolone (ALLO). However, alterations in PREG and ALLO associated with treatment response are understudied. This study's main aim was to evaluate the effects of antidepressant treatment, clinical response, and treatment duration on PREG and ALLO in depression. MATERIALS AND METHODS: In a 4-week, open-label trial, participants were allocated randomly to the venlafaxine (n = 27) or mirtazapine (n = 30) group. Urine concentrations of PREG and ALLO were assessed through gas chromatography-mass spectrometry. Participants collected night urine between 10:30 p.m. and 8:00 a.m. Two primary outcomes were analyzed. Firstly, the effect of treatment (mirtazapine or venlafaxine), clinical response (operationalized through the Hamilton Depression Rating Scale), and time (baseline compared to 28 days) on the urine concentrations of PREG or ALLO in depression. Finally, the effect of clinical response and time on the urine concentration of PREG or ALLO, independently of the antidepressant given (mirtazapine or venlafaxine). Linear mixed models were carried out. RESULTS: There was no significant difference in PREG and ALLO concentrations between baseline and 28 days in responders and non-responders when investigating the venlafaxine or the mirtazapine group. However, we found a significant reduction of urine PREG concentration after 28 days of treatment in responders who received either venlafaxine or mirtazapine (estimate = -0.56; p = 0.016; 95CI [-1.003; -0.115]; Cohen's d = -0.61). CONCLUSIONS: Our main results indicate that responders in depression show reduced urinary PREG concentrations after 4-weeks of therapy, independently of the antidepressant used. More studies are needed to confirm these findings.

Effects of left anodal transcranial direct current stimulation on hypothalamic-pituitary-adrenal axis activity in depression: a randomized controlled pilot trial.

The main objective of this study was to evaluate the effect of left anodal transcranial direct current stimulation (tDCS) on hypothalamic-pituitary-adrenal axis (HPAA) activity in individuals with depression. We conducted a 3-week, randomized, triple-blind pilot trial with 47 participants (dropout rate: 14.89%) randomly assigned to either the tDCS or control group (sham stimulation). Salivary cortisol was used as an HPAA activity marker since cortisol is the effector hormone of the HPAA. The primary outcome was the effect of tDCS on the diurnal cortisol pattern (DCP and area under the curve with respect to ground -AUCg-). Secondary outcomes included tDCS effects on cortisol awakening response (CAR) and cortisol decline (CD), as well as the variation of cortisol concentrations between the initiation of tDCS and 2 weeks later. Intention-to-treat and per-protocol analyses were conducted. Our primary outcome showed an absent effect of tDCS on DCP and AUCg. Additionally, tDCS had an absent effect on CAR, CD, and cortisol concentration variation before-after stimulation. Our pilot study suggests that anodal tDCS showed an absent effect on HPAA activity in individuals with depression. More studies are needed to confirm these findings.

Improvement of depressive symptoms, after a suicide attempt, with dextromethorphan/bupropion combination treatment in a patient with treatment-resistant depression and psychiatric comorbidities.

We admitted a 42-year-old patient with severe treatment-resistant depression and with psychiatric comorbidities. The patient attempted suicide 5 weeks after admission. Subsequently, we initiated dextromethorphan/bupropion based on prior evidence. As a result, the patient demonstrated an improvement in mood symptoms and a reduction in suicide risk, leading to her discharge.

Fractional anisotropy and peripheral cytokine concentrations in outpatients with depressive episode: a diffusion tensor imaging observational study.

Over the past few years, evidence of a positive relationship between inflammation and depression has grown steadily. The aim of the current study was to investigate whether such depression-related inflammation could also be associated with altered microstructural changes in the white matter. FA and serum cytokines (IL-1ß, IL-6, TNF-α, and IFN-γ) were measured in 25 patients with depression (DE) and 24 healthy controls (HC). Diffusion tensor imaging was performed. Fractional anisotropy (FA) was calculated using the FSL pipeline for Tract-Based Spatial Statistics (TBSS). Both voxelwise and mean whole-brain FA were analyzed using general linear models (GLM). Higher concentrations of IL-1ß were associated with lower whole-brain fractional anisotropy, particularly in people with depression (ρ = - 0.67; p < 0.001). TNF-α shared some variance with IL-1ß and also showed a negative relationship between TNF-α concentrations and FA in depression (F1,46 = 11.13, p = 0.002, η2p = 0.21). In detail, the voxelwise analysis showed that the regression slopes of IL-1ß on FA were more negative in the DE group than in the HC group, mainly in the corpus callosum (cluster statistics: genu corpus callosum, p = 0.022; splenium of corpus callosum, p = 0.047). Similar effects were not found for the other remaining cytokines. This study clearly demonstrated an association between peripherally measured IL-1ß and white matter integrity in depression as assessed by DTI. The results suggest that microstructural changes in the corpus callosum are associated with increased peripheral IL-1ß concentrations in depression.

Asociación entre años de estudio y síntomas depresivos y ansiosos durante los primeros meses de confinamiento por la pandemia COVID-19, en una muestra de estudiantes de medicina de una universidad privada en Lima, Perú / Association between study year and depressive and anxious symptoms during the first months of confinement due to COVID-19 pandemic in a sample of medical students from a private university in Lima, Peru

RESUMEN Objetivos : Determinar la relación entre años de estudio y síntomas depresivos y ansiosos durante los primeros meses de la pandemia por COVID-19, en una muestra de estudiantes de medicina de Lima, controlando en particular las covariables sexo y enfermedades médicas previas. Material y métodos : Se realizó una encuesta en línea, que recolectó información de 250 estudiantes de medicina incluyendo datos generales, historia médica previa, síntomas de depresión (PHQ-9) y de ansiedad (GAD-7). Los datos se manejaron mediante un análisis multivariado. Resultados : Se encontraron diferencias entre años de estudios y los valores combinados de PHQ-9 y GAD-7 (Lambda de Wilks = 0,86; p = 1,68 x 10-4; η2p = 0,08). La presencia de enfermedades médicas previas mostró diferencias significativas en relación a los valores combinados de PHQ-9 y GAD-7 (Lambda de Wilks = 0,94, p = 4,43 x 10-4, η2p = 0,06). Las muestras univariadas mostraron diferencias en años de estudios para PHQ-9 (F6,241 = 4,12, p = 0,001, η2p = 0,09) y GAD-7 (F6,241 = 2,81, p = 0,01, η2p = 0,07). El análisis post hoc mostró diferencias estadísticamente significativas en los primeros años de estudio. Conclusiones : Estos resultados sugieren que estudiantes de medicina de los primeros años muestran mayores niveles de síntomas depresivos y ansiosos que los participantes de años superiores. Asimismo, la ocurrencia de enfermedades médicas previas explica también los valores altos de depresión y ansiedad.

SUMMARY Objective : To determine the relationship between year levels of medical studies and depressive and anxious symptoms during the first months of the COVID-19 pandemic in a sample of medical students in Lima, controlling specifically the variables sex and presence of underlying medical conditions. Material and Methods : An online survey collected information from 250 medical students, covering general data, previous medical history and symptoms of depression (PHQ-9) and anxiety (GAD-7). Data were managed using multivariate analysis of covariance. Results : Differences were found between years of study and the combined values of PHQ-9 and GAD-7 (Wilks' Λ = 0.86; p = 1.68 x 10-4; η2p = 0.08). Underlying medical conditions also showed significant differences for the combined values of PHQ-9 and GAD-7 (Wilks' Λ = 0.94, p = 4.43 x 10-4, η2p = 0.06). The univariate test for year of study showed differences for PHQ-9 (F6.241 = 4.12, p = 0.001, η2p = 0.09) and GAD-7 (F6.241 = 2.81, p = 0.01, η2p = 0.07). The post hoc analysis showed statistically significant differences in the first years of study. Conclusions : These results suggest that medical students of the first years show higher levels of depression and anxiety symptoms than participants from more advanced years of the medical career. Likewise, the occurrence of previous medical conditions also explained high levels of depression and anxiety.

[Medical conditions, symptoms of anxiety, and depression during the COVID-19 pandemic in a population sample of Lima, Peru]. / Condiciones médicas, síntomas de ansiedad y depresión durante la pandemia por COVID-19 en una muestra poblacional de Lima, Perú.

Introduction: This study aims to determine differences between the number of underlying medical conditions, depression, and anxiety, when controlling for the covariates of age, sex, and completed education.Methods: Participants (n=484) indicated the number of medical conditions present during the survey, also including the PHQ-9 and GAD-7, to assess depression and anxiety, respectively.Results: Differences were found between groups of medical conditions and the combined values of PHQ-9 and GAD-7 after controlling for the covariates mentioned above (F4,954=5.78; Wilks' Λ=0.95; P<0.0005). The univariate tests showed differences for PHQ-9 (F2,478=8.70; P<0.0005) and GAD-7 (F2,478=11.16; P<0.0005) between the 3 groups. Finally, post-hoc analysis showed differences between participants with one medical condition and with no medical condition (PHQ-9: MD=1.82; 95%CI, 0.25-3.40; GAD-7: MD=1.73; 95%CI, 0.55-2.91), and between participants with more than one medical condition and participants with no medical condition (PHQ-9: MD=3.10; 95%CI, 1.11-5.10; GAD-7: MD=2.46; 95%CI, 0.97-3.95).Conclusions: Our results suggest that people who had a medical condition during the COVID-19 pandemic were more prone to developing severe symptoms of anxiety and depression.

Content validation using Aiken methodology through expert judgment of the first Spanish version of the Eppendorf Schizophrenia Inventory (ESI) in Peru: A brief qualitative report.

BACKGROUND: The main objective of this study was the validation through the expert judgment of the first Spanish version of the Eppendorf Schizophrenia Inventory (ESI-Sp). MATERIALS AND METHODS: A translation and cultural adaptation procedure as a first stage was carried out, which was evaluated by four psychiatrists with clinical experience. In a second stage, we recruited a group of clinical psychiatrists to evaluate the translated instrument by judging the items' clarity and relevance. Content validity was performed using the Aiken methodology (Aiken's V). RESULTS: For the first stage, we did not find any items that needed alteration during translation and adaptation. Concerning the raters' stage, 30 clinical psychiatrists (47.07±13.62 years) completed the rating of the ESI-Sp. Of them, the majority worked in an institute (10/30; 33.33%) and had "15 or more" years of experience (12/30; 40.00%). The null hypothesis was rejected for all items and demonstrated the content validity of each item. Similar results were found for the factors of the ESI. Finally, the total Aiken's V for the ESI did not include the values of the null hypothesis in the confidence intervals (V=0.78; CI95 [0.70; 0.85]), demonstrating content validity. CONCLUSIONS: ESI-Sp is a valid and representative instrument to determine subjective experiences in patients with a high risk of schizophrenia. The construct validation of the ESI-Sp is pending, which our research group will carry out after this first step.

Emotional Impact on Health Personnel, Medical Students, and General Population Samples During the COVID-19 Pandemic in Lima, Peru.

BACKGROUND: The aim of the study is to compare the emotional effects of COVID-19 among three different groups, namely: health personnel, medical students, and a sample of the general population. METHODS: 375 participants were recruited for this study, of which 125 were medical students (preclinical studies, 59; clinical studies, 66), 125 were health personnel (COVID-19 frontline personnel, 59; personnel not related with COVID-19, 66), and 125 belonged to the general population. The PHQ-9, GAD-7, and CPDI scales were used to assess the emotional impact. A multinomial logistic regression was performed to measure differences between groups, considering potential confounding factors. RESULTS: Regarding CPDI values, all other groups showed reduced values compared to COVID-19 frontline personnel. However, the general population, preclinical and clinical medical students showed increased PHQ-9 values compared to COVID-19 frontline personnel. Finally, confounding factors, gender and age correlated negatively with higher CPDI and PHQ-9 scores. CONCLUSIONS: Being frontline personnel is associated with increased COVID-19-related stress. Depression is associated, however, with other groups not directly involved with the treatment of COVID-19 patients. Female gender and younger age correlated with COVID-19-related depression and stress.

Emotional Impact on Health Personnel, Medical Students, and General Population Samples During the COVID-19 Pandemic in Lima, Peru / Impacto emocional en personal de salud, estudiantes de Medicina y población general durante la pandemia de COVID-19 en Lima, Perú

ABSTRACT Background: The aim of the study is to compare the emotional effects of COVID-19 among three different groups, namely: health personnel, medical students, and a sample of the general population. Methods: 375 participants were recruited for this study, of which 125 were medical students (preclinical studies, 59; clinical studies, 66), 125 were health personnel (COVID-19 frontline personnel, 59; personnel not related with COVID-19, 66), and 125 belonged to the general population. The PHQ-9, GAD-7, and CPDI scales were used to assess the emotional impact. A multinomial logistic regression was performed to measure differences between groups, considering potential confounding factors. Results: Regarding CPDI values, all other groups showed reduced values compared to COVID-19 frontline personnel. However, the general population, preclinical and clinical medical students showed increased PHQ-9 values compared to COVID-19 frontline personnel. Finally, confounding factors, gender and age correlated negatively with higher CPDI and PHQ-9 scores. Conclusions: Being frontline personnel is associated with increased COVID-19-related stress. Depression is associated, however, with other groups not directly involved with the treatment of COVID-19 patients. Female gender and younger age correlated with COVID-19-related depression and stress.

RESUMEN Introducción: El objetivo del estudio es comparar los efectos emocionales de la COVID-19 entre 3 grupos diferentes, a saber: personal de salud, estudiantes de Medicina y una muestra de la población general. Métodos: Se incluyó a 375 participantes en este estudio, de los que 125 eran estudiantes de Medicina (estudios preclínicos, 59; estudios clínicos, 66), 125 eran personal de salud (personal de primera línea contra la COVID-19, 59; personal no relacionado con la COVID-19, 66) y 125 pertenecían a la población general. Las escalas PHQ-9, GAD-7 y CPDI se utilizaron para evaluar el impacto emocional. Se realizó una regresión logística multinomial para medir las diferencias entre grupos, considerando posibles factores de confusión. Resultados: Con respecto a los valores del CPDI, todos los demás grupos mostraron valores reducidos en comparación con el personal de primera línea contra la COVID-19. Sin embargo, la población general y los estudiantes de Medicina preclínica y clínica mostraron un aumento de los valores del PHQ-9 en comparación con el personal en primera línea. Por último, los factores de confusión, sexo y edad se correlacionaron negativamente con puntuaciones más altas del CPDI y el PHQ-9. Conclusiones: Ser personal de primera línea se asocia con más estrés relacionado con la COVID-19. Sin embargo, la depresión está asociada con otros grupos que no están directamente involucrados en el tratamiento de los pacientes con COVID-19. Las mujeres y los participantes más jóvenes se correlacionaron con la depresión y el estrés relacionados con la COVID-19.

Emotional Impact on Health Personnel, Medical Students, and General Population Samples During the COVID-19 Pandemic in Lima, Peru.

Background: The aim of the study is to compare the emotional effects of COVID-19 among three different groups, namely: health personnel, medical students, and a sample of the general population. Methods: 375 participants were recruited for this study, of which 125 were medical students (preclinical studies, 59; clinical studies, 66), 125 were health personnel (COVID-19 frontline personnel, 59; personnel not related with COVID-19, 66), and 125 belonged to the general population. The PHQ-9, GAD-7, and CPDI scales were used to assess the emotional impact. A multinomial logistic regression was performed to measure differences between groups, considering potential confounding factors. Results: Regarding CPDI values, all other groups showed reduced values compared to COVID-19 frontline personnel. However, the general population, preclinical and clinical medical students showed increased PHQ-9 values compared to COVID-19 frontline personnel. Finally, confounding factors, gender and age correlated negatively with higher CPDI and PHQ-9 scores. Conclusions: Being frontline personnel is associated with increased COVID-19-related stress. Depression is associated, however, with other groups not directly involved with the treatment of COVID-19 patients. Female gender and younger age correlated with COVID-19-related depression and stress.

Introducción: El objetivo del estudio es comparar los efectos emocionales de la COVID-19 entre 3 grupos diferentes, a saber: personal de salud, estudiantes de Medicina y una muestra de la población general. Métodos: Se incluyó a 375 participantes en este estudio, de los que 125 eran estudiantes de Medicina (estudios preclínicos, 59; estudios clínicos, 66), 125 eran personal de salud (personal de primera línea contra la COVID-19, 59; personal no relacionado con la COVID-19, 66) y 125 pertenecían a la población general. Las escalas PHQ-9, GAD-7 y CPDI se utilizaron para evaluar el impacto emocional. Se realizó una regresión logística multinomial para medir las diferencias entre grupos, considerando posibles factores de confusión. Resultados: Con respecto a los valores del CPDI, todos los demás grupos mostraron valores reducidos en comparación con el personal de primera línea contra la COVID-19. Sin embargo, la población general y los estudiantes de Medicina preclínica y clínica mostraron un aumento de los valores del PHQ-9 en comparación con el personal en primera línea. Por último, los factores de confusión, sexo y edad se correlacionaron negativamente con puntuaciones más altas del CPDI y el PHQ-9. Conclusiones: Ser personal de primera línea se asocia con más estrés relacionado con la COVID-19. Sin embargo, la depresión está asociada con otros grupos que no están directamente involucrados en el tratamiento de los pacientes con COVID-19. Las mujeres y los participantes más jóvenes se correlacionaron con la depresión y el estrés relacionados con la COVID-19.

Validación por expertos del Índice de Distrés Peri-traumático relacionado con la Enfermedad por Coronavirus 2019 para su uso en el Perú / Expert validation of the COVID-2019 Peri-traumatic Distress Index for use in Peru

RESUMEN Objetivo: Efectuar una validación de contenido por expertos del Índice de Distrés Peri-traumático relacionado a COVID-19 (CPDI) para su uso en el Perú. Material y Métodos: El CPDI fue traducido al castellano y luego adaptado en una primera ronda de expertos. En una segunda ronda (n = 13), se evaluó la validez del contenido mediante el uso de la V de Aiken (V). Se calculó la V para cada ítem, así como para el instrumento en su conjunto (VTOT). Resultados : De los 24 ítems originales, solo un ítem (S7) presentó valores no significativos para validez de contenido, razón por la que fue eliminado. La escala con 23 ítems no presentó alteraciones en el cálculo de la VTOT. Conclusiones : Sobre la base de su validez de contenido, el CPDI en castellano es adecuado para su aplicación en la población peruana. Quedan por definirse las características psicométricas así como la modificación propuesta del instrumento, mediante estudios cuantitativos en torno a la validez del constructo.

SUMMARY Objectives : To perform an expert validation study of COVID-19 Peritraumatic Distress Index (CPDI) for its eventual use in Perú. Material and Methods: In a first round by experts, the CPDI was translated into Spanish and then adapted. In a second round, (n = 13), the content validity was evaluated by using Aiken's V (V). The V was calculated for each item, as well as for the whole instrument (VTOT). Results : Of the 24 original items, only one (S7) presented non-significant values for content validity, reason for which it was removed. The final 23-items scale did not present any alterations for the VTOT calculation. Conclusions : On the basis of its adequate content validity, the Spanish version of CPDI is suitable for its application in the Peruvian population. The psychometric characteristics of the instrument, as well as its proposed modification remain to be defined through quantitative studies of the construct validity.