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To explore the role of cardiovascular risk factors and the different NOTCH-3 mutations to explain the variability observed in the clinical presentation of CADASIL. This was a retrospective cohort study of 331 individuals, 90 were carriers of four mutations in the NOTCH3 gene. These four mutations are the ones identified in our region from the genetic evaluation of probands. Cox proportional hazards models were fitted to estimate the effect of genetic and cardiovascular factors on the onset of migraine, first stroke, and dementia. Competing risk regression models considered death as risk. Noncarriers (healthy controls from the same families without NOTCH3 mutations) and NOTCH3 mutation carriers had similar frequencies for all cardiovascular risk factors. Diabetes (SHR 2.74, 95% CI 1.52–4.94) was associated with a younger age at onset of strokes among carriers. Additionally, a genotype–phenotype relationship was observed among C455R mutation carriers, with higher frequency of migraines (100%), younger age at onset of migraine (median age 7 years, IQR 8) and strokes (median age 30.5 years, IQR 26). Moreover, fewer carriers of the R141C mutation exhibited migraines (20%), and it was even lower than the frequency observed in the noncarrier group (44.8%). This study characterizes extended family groups, allowing us a comparison in the genotype–phenotype. The results suggest a complex interplay of genetic and cardiovascular risk factors that may help explain the variability in the clinical presentation and severity of CADASIL. • Frequency of cardiovascular risk factors is similar in NOTCH3 mutations carriers. • Diabetes may accelerate the onset of stroke in NOTCH3 mutation carriers. • C455R NOTCH3 mutation carriers younger age at onset of migraine and strokes. • R141C mutation carriers had a lower frequency of migraines than even noncarriers. [ABSTRACT FROM AUTHOR]

Background: The issue of lower extremity amputation has been in the Colombian political agenda for its relationship with the armed conflict and antipersonnel mines. In 2015 the Colombian Ministry of Health published a national clinical practice guideline (CPG) for amputee patients. However, there is a need to design implementation strategies that target end-users and the context in which the CPG will be used. This study aims to identify users' perceptions about the barriers and facilitators for implementing the guideline for the care of amputee patients in a middle-income country such as Colombia.Methods: Semi-structured interviews were conducted with 38 users, including patients, health workers, and administrative staff of institutions of the health system in Colombia. Individuals were purposively selected to ensure different perspectives, allowing a balance of individual positions.Results: According to participants' perceptions, barriers to implementation are classified as individual barriers (characteristics of the amputee patient and professionals), health system barriers (resource availability, timely care, information systems, service costs, and regulatory changes), and barriers related to clinical practice guidelines (utility, methodological rigour, implementation flexibility, and characteristics of the group developing the guidelines).Conclusions: Our study advances knowledge on the perceived individual and health system barriers and facilitators for the implementation of the CPG for amputee patients in Colombia. Importantly, the governance, financial, and service delivery arrangements of the Colombian health system are determining factors in implementing CPGs. For example, the financial arrangements between the insurance companies and the health care provider institutions were identified as barriers for the implementation of recommendations related to the continuity and opportunity of care of patients with amputations. The design of implementation strategies that successfully address the individual behaviours and the contextual health systems arrangements may significantly impact the health care process for amputee patients in Colombia. [ABSTRACT FROM AUTHOR]

Objective: To analyze erythrocyte cholinesterase values as biomarkers of exposure to pesticides (organophosphates and carbamates) and their possible effects on their users and agroecology practitioners' health in the village of San Cristóbal, Medellín, Colombia. Methodology: Cross-sectional study in which a sample of 40 farmers was measured to see the presence of this biomarker. The measurement was then compared to demographic information, description of agricultural practices, and clinical examinations. Results: Depending on the erythrocyte cholinesterase levels in subjects who use or do not use pesticides, results showed a significant value in those who do not use them (p = 0.042). Results between women using pesticides modifying cholinesterase levels and those not using them were not statistically significant (p > 0.05). On the contrary, results in men were significant (p < 0.032). However, no statistically significant differences in erythrocyte cholinesterase levels were found between the groups of pesticide users and agroecology practitioners. An important finding was a deficient use of personal protective gear and poor technical supervision of proper use of pesticides. No symptoms associated with pesticide poisoning were found at the moment of data collection. Conclusions: Pesticides users inhibiting cholinesterase presented lower cholinesterase erythrocyte levels compared to those who practiced agroecology. The use of protection gear was poor. Therefore, this population should improve protection measures and promote more health and environmentally friendly agricultural practices, such as agroecology. [ABSTRACT FROM AUTHOR]

Over the past decade, research using virtual reality and serious game-based instruments for assessing spatial navigation and spatial memory in at-risk and AD populations has risen. We systematically reviewed the literature since 2012 to identify and evaluate the methodological quality and risk of bias in the analyses of the psychometric properties of VRSG-based instruments. The search was conducted primarily in July–December 2022 and updated in November 2023 in eight major databases. The quality of instrument development and study design were analyzed in all studies. Measurement properties were defined and analyzed according to COSMIN guidelines. A total of 1078 unique records were screened, and following selection criteria, thirty-seven studies were analyzed. From these studies, 30 instruments were identified. Construct and criterion validity were the most reported measurement properties, while structural validity and internal consistency evidence were the least reported. Nineteen studies were deemed very good in construct validity, whereas 11 studies reporting diagnostic accuracy were deemed very good in quality. Limitations regarding theoretical framework and research design requirements were found in most of the studies. VRSG-based instruments are valuable additions to the current diagnostic toolkit for AD. Further research is required to establish the psychometric performance and clinical utility of VRSG-based instruments, particularly the instrument development, content validity, and diagnostic accuracy for preclinical AD screening scenarios. This review provides a straightforward synthesis of the state of the art of VRSG-based instruments and suggests future directions for research. [ABSTRACT FROM AUTHOR]

How empathic are battle-experienced war veterans and demobilized ex-combatants? Individuals who have participated in war-related violence tend to show an increased risk of mental health problems, which makes their readaptation to postconflict civilian life much more difficult. This study is the first systematic attempt to evaluate whether war experiences are potentially related to empathic deficit among veterans. Based on a sample of 624 demobilized ex-guerrillas and ex-paramilitaries from the Colombian armed conflict, we identify 3 clearly distinct empathic profiles, suggesting that, while lack of empathy is not generalized among ex-combatants, there is an important subgroup of veterans who present such a dispositional profile. Identification of this critical subgroup will be crucial to policies aimed at assisting postconflict reintegration efforts. [ABSTRACT FROM AUTHOR]

Objective. To empirically identify schizophrenia neurocognitive subtypes and establish their association with clinical characteristics. Methods. Sustained attention, executive function, facial emotion recognition, verbal learning, and working memory tests were applied to 253 subjects with schizophrenia. We identified neurocognitive subtypes by a latent class analysis of the tests results. After, we made a search for the association of these subtypes with clinic characteristics. Results. We identified four neurocognitive subtypes: 1) “Global cognitive deficit", 2) “Memory and executive function deficit", 3) “Memory and facial emotion recognition deficit," and 4) “Without cognitive deficit." In comparison with the subtype “without cognitive deficit," we found that the “memory and executive function deficit subtype" and the “global cognitive deficit subtype" had a higher frequency of male, unemployed, severe impairment, and adherence to treatment participants. However, in the “global cognitive deficit subtype" the differences were higher and there was also a lower frequency of past major depressive episodes (OR 0.39; 95%CI: 0.16 to 0.97). The “memory and facial recognition deficit subtype" had a higher probability of severe impairment (OR 5.52; 95%CI: 1.89 to 16.14) and unemployed (OR 2.43; 95%CI: 1.06 to 5.55) participants, but also a lower probability of past depressive episodes (OR 0.21; 95%CI: 0.07 to 0.66). Conclusion. Our results suggest the existence of four neurocognitive subtypes in schizophrenia with a spectrum of dysfunction and severity. We found higher dysfunction in those with worse cognitive dysfunction, and higher affective psychopathology and less treatment adherence in those with less cognitive dysfunction. [ABSTRACT FROM AUTHOR]

Objective: To determine whether there are differences in verbal working memory amongst subjects with schizophrenia, their first degree relatives and controls, and to evaluate the influence of symptoms on these differences, as an initial step to assess whether this cognitive function is an endophenotype. Methods: We examined 197 cases with schizophrenia, 197 first degree relatives and 200 controls through psychiatric interviews and the Letters and Numbers Sequencing test (LNS). Performance was compared among the three groups adjusting for age, sex and education level. Adjustment for "negative symptoms" and "disorganization" was performed afterwards. Results: Subjects with schizophrenia showed lower performance in the LNS than their first degree relatives and the healthy controls; the effect sizes were 0.75 and 1.18 respectively. There was a small difference between relatives and controls (effect size =0.38). These differences were significant after adjustment for negative and disorganized symptoms, but the effect sizes became smaller: 0.26 for relatives vs. subjects with schizophrenia, 0.56 for controls vs. subjects with schizophrenia and 0.33 for relatives vs. controls. Among individuals with schizophrenia, performance in the LNS was not associated with disorder duration, disease onset age, antipsychotics, history of depressive episodes or substance use disorders. Conclusion: Results suggest verbal working memory may be considered as an endophenotype in schizophrenia. [ABSTRACT FROM AUTHOR]

Perceived social support is considered to be a variable of great importance in the health - disease continuum. Perceived social support refers to one's confidence that social support or resources are available if needed. The objectives of this research study were to (1) translate and culturally adapt the Medical Outcomes Study - Social Support Survey (MOS; Sherbourne y Stewart, 1991) for the Colombian population, and (2) validate the Colombian version of the MOS. The survey instrument measures perceived social support and was developed for a study of outcomes in patients with chronic disease. The sample consisted of 179 participants (36.7% men and 63.3% women), mean age 38.4 (SD =15.2, range 17 to 86 years) recruited from different cities in Colombia. The results indicated a favorable Cronbach's alpha between components ranging from .921 to .736. A confirmatory analysis was conducted, obtaining a favorable structure for both 4 and 3 factors. [ABSTRACT FROM AUTHOR]

Introduction: Rabies virus infection can cause fatal brain disease in mammals. Any species is susceptible to infection. Any effort aimed at recognizing infected animals and performing first actions in the event of transmission is mandatory., Objective: To determine knowledge, attitudes, and practice profiles regarding rabies, or hydrophobia, in a municipality of Colombia, using a multiple correspondence analysis., Materials and Methods: A descriptive observational study involving 71 pet owners was carried out in the municipality of Ibagué (Tolima). A questionnaire-based survey collected data on rabies knowledge, attitudes, practices, and demographic information. The survey was conducted between October and November 2021, and the data analysis involved descriptive statistics and multiple correspondence analysis., Results: The study revealed a commendable level of rabies awareness among the urban residents in the study municipality. However, there are causes of concern as they allow stray animals to enter their homes and are not aware of the importance of notifying dead animals. The respondents demonstrated a humane approach to bite management and emphasized the importance of wound cleaning. Additionally, they expressed a strong desire for more information to enhance their knowledge and awareness of the disease., Conclusion: The findings of this study provide valuable insights for improving rabies prevention efforts and promoting public health. Health education, evidence-based strategies, and community participation are essential for successful disease control and educational gaps addressing related to sociocultural factors.

Background: Hospital-acquired bacterial infections are associated with high morbidity and mortality rates in patients with systemic lupus erythematosus (SLE). This study aimed to develop and validate predictive models for the risk of hospital-acquired bacterial infections in patients with SLE., Methods: A historical cohort study was designed for development, and another bidirectional cohort study was used for external validation. The risk of bacterial infection was assessed upon admission and after 5 days of hospitalization. Predictor selection employed the least absolute shrinkage and selection operator (LASSO) techniques. Multiple imputations were used to handle missing data. Logistic regression models were applied, and the properties of discrimination, calibration, and decision curve analysis were evaluated., Results: The development cohort comprised 1686 patients and 237 events (14.1%) from 3 tertiary hospitals. The external validation cohort included 531 patients and 84 infection outcomes (15.8%) from 10 hospital centers in Colombia (secondary and tertiary level). The models applied at admission and after 120 hours of stay exhibited good discrimination (AUC > 0.74). External validation demonstrated good performance among patients from the same tertiary institutions where the models were developed. However, geographic validation at other institutions has been suboptimal., Conclusions: Two predictive models for nosocomial bacterial infections in patients with SLE are presented. All infection prevention recommendations should be maximized in patients at moderate/high risk. Further validation studies in diverse contexts, as well as clinical impact trials, are necessary before potential applications in research and clinical care., Competing Interests: The authors declare no conflict of interest., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)

Objective: Several studies have demonstrated an association between frailty and worse outcomes in patients with acute coronary syndrome (ACS); however, there is a lack of evidence from Colombia. This study aims to evaluate the association between frailty and the risk of adverse outcomes in patients over 65 years old diagnosed with ACS., Materials and Methods: A prospective cohort study was conducted, including patients over 65 years old who underwent coronary angiography due to an ACS diagnosis at a hospital in Medellín, Colombia. Frailty was assessed using the FRAIL scale. The primary outcome was all-cause mortality at 30 days. Secondary outcomes included length of hospital stay and a composite outcome of in-hospital or 30-day mortality, contrast-induced nephropathy (CIN), acute heart failure, cardiogenic shock, hemorrhagic complications, and vascular complications., Results: A total of 112 patients were included. Frail patients (n=35, 31.3%) were older, had a lower socioeconomic status, higher GRACE scores, and more severely compromised coronary vessels. A significant association was observed between frailty and 30-day mortality (relative risk [RR] 19.00, 95% confidence interval [CI]: 5.04-72.61; p<0.001), the composite outcome (RR 4.57, 95% CI: 2.56-8.34; p<0.001), and longer hospital stays (9 days vs. 5 days in the non-frail group)., Conclusions: A considerable number of patients over 65 years old with ACS were frail. Frailty was associated with adverse in-hospital and 30-day outcomes., Competing Interests: Conflictos de interés: Ninguno

Background: Variants in APOE and PSEN1 (encoding apolipoprotein E and presenilin 1, respectively) alter the risk of Alzheimer's disease. We previously reported a delay of cognitive impairment in a person with autosomal dominant Alzheimer's disease caused by the PSEN1 E280A variant who also had two copies of the apolipoprotein E3 Christchurch variant ( APOE3 Ch ). Heterozygosity for the APOE3 Ch variant may influence the age at which the onset of cognitive impairment occurs. We assessed this hypothesis in a population in which the PSEN1 E280A variant is prevalent., Methods: We analyzed data from 27 participants with one copy of the APOE3 Ch variant among 1077 carriers of the PSEN1 E280A variant in a kindred from Antioquia, Colombia, to estimate the age at the onset of cognitive impairment and dementia in this group as compared with persons without the APOE3 Ch variant. Two participants underwent brain imaging, and autopsy was performed in four participants., Results: Among carriers of PSEN1 E280A who were heterozygous for the APOE3 Ch variant, the median age at the onset of cognitive impairment was 52 years (95% confidence interval [CI], 51 to 58), in contrast to a matched group of PSEN1 E280A carriers without the APOE3 Ch variant, among whom the median age at the onset was 47 years (95% CI, 47 to 49). In two participants with the APOE3 Ch and PSEN1 E280A variants who underwent brain imaging, 18 F-fluorodeoxyglucose positron-emission tomographic (PET) imaging showed relatively preserved metabolic activity in areas typically involved in Alzheimer's disease. In one of these participants, who underwent 18 F-flortaucipir PET imaging, tau findings were limited as compared with persons with PSEN1 E280A in whom cognitive impairment occurred at the typical age in this kindred. Four studies of autopsy material obtained from persons with the APOE3 Ch and PSEN1 E280A variants showed fewer vascular amyloid pathologic features than were seen in material obtained from persons who had the PSEN1 E280A variant but not the APOE3 Ch variant., Conclusions: Clinical data supported a delayed onset of cognitive impairment in persons who were heterozygous for the APOE3 Ch variant in a kindred with a high prevalence of autosomal dominant Alzheimer's disease. (Funded by Good Ventures and others.)., (Copyright © 2024 Massachusetts Medical Society.)

Introduction: Mild Cognitive Impairment (MCI) is common in Parkinson's Disease (PD). Few studies have compared the Health-Related Quality of Life (HRQoL) in patients with and without MCI due to PD (PD-MCI), and its correlation to patients' subjective cognitive and communicative difficulties has not been explored., Objective: We aimed to compare HRQoL in PD-MCI and PD without MCI (PD-nMCI), and explore its possible relationship to subjective cognitive and communicative complaints., Methods: We included 29 PD-nMCI and 11 PD-MCI patients. The HRQoL was assessed with the Parkinson's Disease Questionnaire-39 (PDQ-39): its Cognition dimension was used as a measure of subjective cognitive complaints, its Communication dimension for subjective communicative complaints, and the summary index (PDQ-39 SI) as an indicator of HRQoL. Non-parametric partial correlations between the Cognition and Communication dimensions, and the adjusted PDQ-39 SI were conducted., Results: PD-MCI patients had greater subjective cognitive and communicative complaints and worse HRQoL than PD-nMCI patients. In the PD-MCI group, both subjective cognitive and communicative complaints exhibited significant direct correlations with the adjusted HRQoL scores., Conclusions: HRQoL seems to be affected in PD-MCI, and it might be influenced by greater subjective cognitive and communicative complaints. Including patient-reported outcome measures of HRQoL, and providing cognitive and speech rehabilitation, as well as psychotherapeutic strategies to face these deficits can enhance the patient-centred approach in PD., (Copyright © 2021 Asociación Colombiana de Psiquiatría. Published by Elsevier España, S.L.U. All rights reserved.)

Objective: We aimed to identify the predictive factors of hospital-acquired bacterial infections in patients with systemic lupus erythematosus (SLE)., Methods: This chart review study included patients with SLE who were hospitalized between 2009 and 2020 for reasons other than infection. The outcome was defined as any infection confirmed using any bacterial isolation method or diagnosed by treating physicians and required treatment with intravenous antibiotics. For statistical analysis, logistic regression analyses were performed., Results: In total, 1678 patients (87.6% women) were included. The median age was 33 years (interquartile range, 24-47 years). The incidence of hospital-acquired infections was 13.9% (233 infections). Age, Systemic Lupus Erythematosus Disease Activity Index score, Systemic Lupus International Collaborating Clinics damage score, blood urea nitrogen and C-reactive protein levels, dosage of steroid in the previous month, recent use of 1 or more immunosuppressants, admission with a central venous catheter (or dialysis catheter), and use of central venous catheter or bladder catheter in the first 5 days were the predictive factors of nosocomial infections., Conclusion: The patients' infection risk profile should be assessed to accurately determine the risk-benefit balance of any therapeutic intervention, minimize exposure to steroids and immunosuppressants, and maintain a low threshold for the early diagnosis of infections. Further studies should assess whether the modification of some identified factors could reduce the incidence of nosocomial infections., Competing Interests: The authors declare no conflict of interest., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)

Objective: We aim to determine the prevalence of mental disorders in siblings of children with attention deficit hyperactivity disorder (ADHD), and to determine how psychosocial adversity factors relate to this psychopathology, in a low-middle income country (Colombia)., Methods: We evaluated subjects with ADHD diagnosed according to the DSM-5 criteria, one of their parents and one of their siblings (ages 8-19). We used the ADHD rating scale and a set of instruments to assess the presence of mental disorders as well as psychosocial adversity., Results: We evaluated 74 trios formed by the index case with ADHD, one sibling and one of the parents. We found that 24.3% of the participating siblings also met the criteria for ADHD and another 24.3% for other psychiatric disorders. The risk of these siblings having ADHD increased further when one of the parents reported a history of ADHD. We also found that 28.3% of the families faced high levels of psychosocial adversity as per their scores in the Rutter Adversity Index., Conclusions: Siblings of subjects with ADHD showed a significant risk for ADHD and other mental disorders. That risk increased if a parent reported a history of ADHD and also when two or more psychosocial adversity factors were present. This study supports the importance of early detection in efforts to decrease the risk for other siblings., (Copyright © 2021 Asociación Colombiana de Psiquiatría. Published by Elsevier España, S.L.U. All rights reserved.)

Background: Acute decompensated heart failure (ADHF) is one of the most frequent causes of emergency department (ED) visits. Point-of-Care Ultrasound (POCUS) is a reliable, easy-to-use, and available tool for an accurate diagnosis of ADHF. We aimed to analyze the impact of introducing POCUS as an additional tool to clinical standard diagnosis in clinical times of hospitalized heart failure patients., Methods: Retrospective cohort study comparing patients consulting to ED for heart failure acute decompensation previous to the rutinary use of POCUS versus patients who received an ultrasound-guided diagnosis at entrance. Ultrasound evaluation was additional to standard diagnosis (which included natriuretic peptides, images, etc). Cumulative incidence functions were calculated for time to treatment, time to disposition decision, and time to discharge. We used a flexible parametric model for estimate the time ratio (TR) in order to reflect the effect of POCUS., Results: A total of 149 patients were included. The most frequent comorbid condition was hypertension (71.8%) followed by type 2 diabetes (36.2%). B type natriuretic peptide (BNP) was over 500 ng/ml. Most patients had Stevenson B profile (83.9%) at admission. In the cumulative incidence model (Fig. A), the TR (time ratio) for the outcome time to treatment was 1.539 (CI 95% 0.88 to 2.69). The TR for the outcome time to disposition decision was 0.665 (CI 95% 0.48 to 0.99). The TR for the outcome time to discharge (hospital length of stay) was 0.663 (CI 95% 0.49 to 0.90)., Conclusion: In our study, the introduction of POCUS to ADHF patients decreases time to disposition decision and total length of hospital stay. Conversely, time to treatment augments. There is need for the evaluation of ultrasound as an intervention in clinical trials to confirm these findings., Competing Interests: Declaration of Competing Interest The authors declare no conflict of interest. We have not received any funding., (Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.)

Handgrip strength is a robust indicator of the biological health of children and adolescents. Objecti ves: to identify the anthropometric characteristics and body composition related to handgrip stren gth, and to describe the main characteristics of the protocols used for its evaluation., Methodology: A scoping review was developed; the search was carried out in 1.) Medline; 2.) Web of Science; 3.) Science Direct; 4.) Scielo; and 5.) EBSCO's Sportdiscus. Original investigations were included if they have handgrip strength data, anthropometric characteristics, and body composition., Results: 59 reports published between 2005 and 2020 were selected. Among them, nutritional classification was the most studied characteristic (n = 25; 42.3%), followed by body mass index (n = 23; 38.9%). In 47.5% (28 reports), the number of tests performed on each individual to estimate the handgrip strength value was not clear. The dynamometer brand Takei Scientific Instrument Co. Ltd. was the most used, with 49.2 %. The most widely used indicator was absolute handgrip (86.4%, 51 reports)., Conclusions: There is a wide variety of protocols used for handgrip strength assessment with va riations in body position, arm and hand selection, number of repetitions, and intervals between measurements. A proportional pattern of values was found between absolute handgrip strength and body mass index, Σ skinfolds, however, when adjusted by mass (relative handgrip strength), the relationship is inverse.

Objective: The objective of this study is twofold: i) to estimate the normative values for handgrip strength and relative handgrip strength, specific to sex and age, for Colombian children and adolescents from 6 to 17 years of age using quantile regression models and ii) to compare the normative values for handgrip strength and relative handgrip strength in Colombian children and adolescents with those in children and adolescents in different countries., Method: This was a cross-sectional analysis of a sample of 2647 youngsters. Handgrip strength was evaluated with a TKK 5101 digital dynamometer (Takei Scientific Instruments Co., Ltd., Tokyo, Japan). The relative handgrip strength was estimated according to weight in kilograms. The normative values were estimated to handgrip strength and relative handgrip strength through quantile regression models for the percentiles P 5, P 10, P 25, P 50, P 75 , P 90, and P 95 developed independently for each sex. All analyses were adjusted for the expansion factor., Results: The values for handgrip strength were considerably higher in males than in females in all age ranges. Additionally, as age increased for both sexes, the values for handgrip strength increased. The percentiles by sex and age for relative handgrip strength show for males a proportional increase according to age; for females, this did not occur., Conclusions: When making comparisons with international studies, variability is observed in the methodologies used to evaluate handgrip strength and estimation methods, which could influence the discrepancies between the different reports., Competing Interests: Conflicts of interest The authors declare no conflicts of interest., (Copyright © 2022 Sociedade Brasileira de Pediatria. Published by Elsevier Editora Ltda. All rights reserved.)

Bipolar disorder (BD) has a large hereditary component. It is a disorder that begins in early adulthood, but about which it has been described a premorbid period preceding the onset of BD. During this herald expression psychiatric disorders and symptoms, such as depressive, manic, psychotic, anxious and others, may appear., Objective: To determine the psychopathological profile of a Bipolar Offspring (BO) group compared with the Community Control Offspring (CCO) group, and its evolution over time, including subthreshold symptoms and mental disorders., Methods: We conducted an observational mixed cohort study, with a prospective design. We included subjects from six to 30 years of age, from the region of Antioquia, Colombia. A total of 131 subjects from the risk group BO and 150 subjects from the CCO group were evaluated through validated psychiatric diagnostic interviews (K-SADS-PL and DIGS) at baseline and at 4 years follow up. All interviews were carried out by a staff blind to parent diagnoses. Follow-up assessment were complete in 72% of the offspring. Forty-two subjects were excluded as they surpassed the age of 30 years, and only 46 subjects were not followed (change of address or did not consent to participate)., Results: Compared with the CCO group, the BO group had a higher frequency of affective disorder, psychotic disorder, externalizing disorders and use of the psychoactive substances during both assessments at time 1 and 2. The magnitude of the differences between the groups increased when they reach time 2. The BO group had a greater risk for presenting subthreshold symptoms and definitive psychiatric disorders, such as affective disorders, psychotic disorders and externalizing disorders. In addition, the BO group had a younger age of onset for psychoactive substances consumption., Conclusion: During the follow-up period, the BO group had a higher risk of presenting mental disorders compared with the CCO group. The most relevant symptoms and disorders that could precede the onset of BD were depressive, bipolar not otherwise specified, psychotic and substance use., (Copyright © 2020 Asociación Colombiana de Psiquiatría. Published by Elsevier España, S.L.U. All rights reserved.)

Introduction: Studies that have compared the cognitive alterations of the children of parents with bipolar disorder (CPBD) versus the children of control parents (CCP), present heterogeneous results due to the studies' methodological differences, the age of the population studied, and the lack of standardisation of the measures used for the different neurocognitive domains. The objective was to compare the neurocognitive profile of CPBD versus CCP to observe if there are differences that could be proposed as possible endophenotypes of BD., Results: A total of 107 individuals (51 CPBD, and 56 CCP) with ages between 6 and 16 (mean, 12.2±2.80) years of age were evaluated. Seventy-four point five percent of the CPBD group had some disorder compared to 67.9% of the CCP group. Tests such as letter-F phonemic verbal fluency, letter-S phonemic verbal fluency, overall F-A-S phonemic verbal fluency, story recall and retrieval, and Wisconsin perseverative errors showed a difference with a small effect size, but with a high degree of uncertainty., Conclusions: The CPBD did not have differences in their neurocognitive profile in comparison with CCP. Both groups have a high prevalence of psychopathology, which is a factor that could explain the lack of differences in neurocognitive performance., (Copyright © 2021 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España, S.L.U. All rights reserved.)

Introduction: Cortical thinning is a marker of neurodegeneration in Alzheimer's disease (AD). We investigated the age-related trajectory of cortical thickness across the lifespan (9-59 years) in a Colombian kindred with autosomal dominant AD (ADAD)., Methods: Two hundred eleven participants (105 presenilin-1 [ PSEN1 ] E280A mutation carriers, 16 with cognitive impairment; 106 non-carriers) underwent magnetic resonance imaging. A piecewise linear regression identified change-points in the age-related trajectory of cortical thickness in carriers and non-carriers., Results: Unimpaired carriers exhibited elevated cortical thickness compared to non-carriers, and thickness more negatively correlated with age and cognition in carriers relative to non-carriers. We found increased cortical thickness in child carriers, after which thickness steadied compared to non-carriers prior to a rapid reduction in the decade leading up to the expected age at cognitive impairment in carriers., Discussion: Findings suggest that cortical thickness may fluctuate across the ADAD lifespan, from early-life increased thickness to atrophy proximal to clinical onset., Competing Interests: Mr. Fox‐Fuller was supported by the National Institute on Aging (NIA F31AG062158) and was the member‐at‐large for the International Neuropsychological Society's Student Liaison Committee. Dr. Quiroz was supported by grants from the National Institutes of Health (NIH) Office of the Director (DP5OD019833), the NIA (R01 AG054671]), the Alzheimer's Association, and Massachusetts General Hospital Executive Committee on Research (ECOR). Mr. d'Oleire Uquillas was supported by the National Science Foundation, NSF GRFP (disbursed to institution) and the Ford Foundation National Academies of Sciences, Medicine and Engineering Predoctoral Fellowship (disbursed to institution). Dr. Kewei Chen was supported by the NIH (to the institute State of Arizona and to the institute) and was a paid consultant (unrelated to this manuscript) to the following: Green Valley Pharmaceutical, Shanghai, China; Beijing Normal University, Beijing, China; and The sixth people's hospital, Shanghai, China. In addition, Dr. Kewei Chen holds a patent regarding use of multi‐modal linkage (multi‐modal partial least square) to link and co‐analyze multi‐modal data (https://patents.google.com/patent/US20060074290). Dr. Su was supported on this work by R01AG055444 (funding was made to Banner Health) and was also supported by the following grants: NIH/NIA R01AG069453, NIH/NIA R21AG065942, NIH/NIA R42AG053149, NIH/NIA P30AG019610, NIH/NIA R01AG031581, NIH/NIA U19AG024904, NIH/NIBIB R21EB024366 BrightFocus ADR A2017272S, Alzheimer's Association AARG‐17‐532945 State of Arizona All grants were made to institution. Dr. Su is also a paid consultant (unrelated to this work) to Green Valley Pharmaceutical LLC. Dr. Jacobs received support (unrelated to this work) from the following: NIA‐NIH R01 AG 062559, R01 AG 068062‐01A1, and from Alzheimer Nederland (the Netherlands): AN‐19021. In addition, Dr. Jacobs is vice‐chair of the Neuromodulatory Subcortical Systems professional interest area of International Society to Advance Alzheimer's Research and Treatment (ISTAART; Alzheimer's Association). Dr. Guzmán‐Vélez was supported by funding from the National Institute on Aging (NIA) K23AG061276, the Massachusetts General Hospital ECOR Fund for Medical Discovery Clinical Fellowship Award, and the NIH Research Supplement for Diversity (DP5OD019833); she also received honoraria for a presentation at a Missouri University of Science and Technology departmental colloquium (unrelated to this work). Dr. Vila‐Castelar is supported by a grant from the Alzheimer's Association (2019A005859) and serves as co‐chair for the Sex Differences Special Interest Group, Diversity and Disparities Professional Interest Area‐PIA of ISTAART. Dr. Reiman has received support from the following grants: NIH grants R01 AG069453, R01 AG031581, P30 AG019610, R01 AG055444, R01 AG054671, R01 AG058468, U01 NS093334, OT2 OD026549, PO1 AG052350, U19 AG024904, U54 MD000507, U01 AG0169765 and AG016976, and R01 AG054671; Arizona Department of Health Services; and Banner Alzheimer's Foundation, Flinn Foundation, Anonymous Foundations, NOMIS Foundation, Alzheimer's Association, and GHR Foundation. Dr. Reiman's institution has received consulting fees for his work with: Alkahest, Alzheon, Aural Analytics, Denali, Green Valley, Retromer Therapeutics, and Vaxxinity. Dr. Reiman is an inventor, with a patent issued to Banner Health, related to biomarker strategies involved in the accelerated evaluation of AD prevention therapies. Dr. Reiman is on the Board of Directors, Flinn Foundation, and is a Member of the National Advisory Council on Aging (NACA). Dr. Reiman is also Cofounder and shareholder of ALZPath. Dr. Sperling was supported by the following grants: R01AG058825 from the NIH, payment made to Brigham and Women's Hospital (BWH); R01AG063689 from NIH, payment made to BWH R01AG053184; from NIH, payment made to BWH; P01AG036694 from NIH, payment made to Massachusetts General Hospital (MGH); R01AG063689 from NIH (subcontract with USC), payment made to MGH R01AG061848; from NIH, payment made to MGH R01AG058468; from NIH (subcontract with Banner Alzheimer's Institute), payment made to MGH; from a research grant from the Alzheimer's Association, payment made to MGH ; and research funding Eisai, Eli Lilly, Janssen, clinical research funding. Dr. Sperling received Honorarium payments (unrelated to this work) made directly to her from: Shionogi, Genentech, Oligomerix, Inc., Cytox, Prothena, Acumen, JOMDD, Renew, Alnylam Pharmaceuticals, Neuraly, Janssen, Neurocentria, AC Immune, Biogen, Eisai, Roche, and Takeda. Dr. Sperling also reports a financial relationship for my spouse Dr. Keith Johnson regarding the following: Cerveau, Janssen, AC Immune, Novartis (these are all honorarium consulting payments). Dr. Sperling received the following additional honoraria (unrelated to this work): 2018 Duke Lectureship; 2018 UCLA Talk; 2018 Alzheimer Research Roundtable; 2018 ADRC Talk; 2019 ACTC Scottdale; 2019 ADPD Symposium; 2019 University of Tokyo Roundtable; 2019 Biogen: ARIA State of the Art Meeting; 2019 University of Pittsburgh Distinguished Scientist Lecture; 2019 University of Cincinnati Lurie Lecture; 2019 CTAD San Diego; 2019 CT Research Academy Talk; 2020 UC Irvine Distinguished Lecture on the Brain; 2020 Virtual Rhode Island IDeA Symposium; 2020 IMPACT‐AD Course; 2020 University of Chicago DOM Weekly Grand Rounds Seminar Series; 2020 Adler Foundation Symposium; San Diego 2020 ACTC; and San Diego 2020 UC Irvine Lecture. Dr. Sperling has also received travel support for the following conferences (unrelated to this work): 2018 ACTC Atlanta; 2018 CTAD Spain; 2018 Harvard HUBWeek Panel; 2018 Japan JSNM; 2019 Palm Beach Reversing the Tide of Alzheimer's Fundraiser; 2019 HAI Meeting; 2019 ACTC Philadelphia; 2019 GHR Board of Directors in DC; 2019 Marr Family Race; 2019 ACTC St. Louis; 2019 FDA Type C Meeting; 2019 Marc Diamond UT Southwestern Symposium; and 2020 HAI Miami. Dr. Sperling reports the following leadership positions: 2014‐2018 National Institute on Aging, Standing Council Member; National Advisory Council on Aging 2018‐2019 Chair, Division of Neuroscience Review Committee; National Institute on Aging 2018‐Present Journal of Prevention of Alzheimer's Disease; Editorial Board 2020‐2021 Chair, Preclinical Alzheimer's Disease Biomarker Disclosure Workshop Committee, National Academies of Science, Engineering and Medicine. Dr. Lopera reports support from the COLBOS project to himself and his Institution and received funds from an NIH Subcontract with Massachusetts General Hospital. Dr. Lopera reports receiving funds from NIH to participate in various Alzheimer's‐related conferences. Dr. Keith Johnson reports research support from NIH (unrelated to this work) and received personal consulting fees from Novartis. Dr. Brad Dickerson reports research support from NIA, NIDCD, and NIMH, as well as royalties/licenses with Oxford University Press, Cambridge University Press, and Elsevier. Dr. Dickerson reports personal consulting fees received from: Acadia, Alector, Arkuda, Biogen, Novartis, Takeda, and Wave. Dr. Dickerson received honoraria from InTouch Medical and Biogen and was on the Data Safety/Advisory Boards for: Acadia, Alector, Arkuda, Biogen, Novartis, Takeda, and Wave. Dr. Dickerson is also Chair elect of the Association for FTD., (© 2021 The Authors. Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring published by Wiley Periodicals, LLC on behalf of Alzheimer's Association.)

Objective: Validate the Self Stigma Of Seeking Help (SSOSH) scale in a population of students of a medical school for its use in Colombia., Methods: We included 384 medical students from the city of Medellín. Initially, two direct translations were made, two back translation and one pilot test. The internal consistency, test-retest repeatability and structural, convergent, divergent and discriminative construct validity were then evaluated., Results: A easy-to-understand and to fill out Spanish version was obtained. The internal consistency of the scale was adequate (Cronbach's alpha = .80; 95%CI, .77-.83) as well as the test-retest repeatability (CCI = .77; 95%CI, .63-.86). The Confirmatory Factor Analysis showed a good fit with the one-dimensional structure (RMSEA = .073; IC90%, .056-.089; CFI = .968; TLI = .977; WRMR = .844). The convergent validity was supported by the correlation with the Public Stigma scales (ρ = .39) and Attitudes towards Seeking Help (ρ = -0.50) and the divergent validity with the Social Desirability scale (ρ = -0,05). When examining the discriminative validity, differences were found between the scores of those who would be willing to seek professional help when having a mental health problem and those who probably would not (Difference of means = 4.9; 95%CI, 2.99-6.83)., Conclusions: The Colombian version of the SSOSH is valid, reliable and useful for the measurement of the Self-stigma associated with seeking professional help in the university population of the Colombian health sector. Its psychometric properties must be investigated in populations of other programs and outside universities., (Copyright © 2020 Asociación Colombiana de Psiquiatría. Published by Elsevier España, S.L.U. All rights reserved.)

To determine the explanatory capacity of pain metacognitions and beliefs over the functionality, coping and pain intensity, following the Model of Self-Regulatory Executive Functions (S-REF) in a sample of women with fibromyalgia from Medellín and its Metropolitan Area. Method: Metacognitions Scale on Symptom Control, Pain Self-efficacy Questionnaire, Chronic Pain Catastrophizing Scale, Chronic Pain Coping Questionnaire, WHODAS 2.0 Scale, and Pain Intensity Numerical Scale. The sample was represented by 108 women between 24 and 60 years old with a diagnosis of fibromyalgia. A modeling process was carried out through an analysis of structural equations. Results: The final model fails to fit. Despite this, the analysis suggests that negative metacognitions and pain self-efficacy have an effect over the tendency to catastrophizing. The latter and the pain self-efficacy are the main mediators in the effects of functionality. The intensity of pain is not determined by the metacognitions related to it., Competing Interests: Conflict of interests:The authors have declared that there is no conflict of interest.

Introduction: Predominant polarity (PP) has been proposed as a specifier of bipolar disorder (BD) due to its relationship with clinical and prognostic variables. It is possible that this is due to a different underlying neurobiology, in such a way that the changes found by structural nuclear magnetic resonance imaging (sMRI) in BD are different and specific., Objectives: To explore findings of structural neuroimaging in patients with BD type I (BD-I) according to PP., Methods: Cross-sectional study that evaluated 77 patients with BD-I using the DIGS interview. PP was established using the operative definition of two-thirds of all affective episodes throughout life to classify PP as manic (MPP), depressive (DPP) or indeterminate (IPP). MRIwas performed during the euthymia phase to measure intracranial structures. The data obtained was analysed using a linear regression model adjusted for confounding variables (drug use, alcohol use, psychoactive substance use) and were compared between the three groups finding the standardised mean difference (SMD)., Results: Differences with adequate effect size were found in three brain structures after adjusting for confounding variables, specifically in the right fusiform gyrus and the left lingual gyrus, which were greater in the DPP group than in the MPP group (SMD = 0.92; 95% CI = 0.34 to 1.49 and SMD = 0.78; 95% CI = 0.21 to 1.35). Likewise, in the right thalamus, it was shown to be greater in the IPP group compared to MPP group (SMD 0.89, 95% CI = 0.31 to 1.46)., Conclusions: A reduction in the thickness of the right fusiform gyrus and the left lingual gyrus, as well as the right thalamic volume was observed in patients with BD-I with PPM, which supports the hypothesis that PP has a plausible neurobiological correlate and could have potential utility as a BD specifier., (Copyright © 2020 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España, S.L.U. All rights reserved.)

Introduction: The offspring of bipolar parents (BO) is a high-risk population for inheriting the bipolar disorder (BD) and other early clinical manifestations, such as sleep disturbances., Objective: To compare the presence of psychiatric disorders and sleep disturbances of BO versus offspring of control parents (OCP)., Methods: A cross-sectional analytical study was conducted that compared BO versus OCP. The participants were assessed using valid tools to determine the presence of psychiatric symptoms or disorders. The "Sleep Evaluation Questionnaire" and "School Sleep Habits Survey" were used to determine sleep characteristics and associated factors. Sleep records (7-21 days) were also obtained by using an actigraphy watch., Results: A sample of 42 participants (18 BO and 24 OCP) was recruited. Differences were found in the presentation of the psychiatric disorder. The BO group showed a higher frequency of major depression disorder (MDD; P=.04) and Disruptive Mood Dysregulation Disorder (DMDD; P=.04). The OCP group showed a higher frequency of Attention Deficit and Hyperactivity Disorder (ADHD; P=.65), and Separation Anxiety Disorder (SAD; P=.46). Differences were also found in sleep by using subjective measurements. Compared to the OCP group, BO had a worse perception of quality of sleep (P=.02), a higher frequency of nightmares (P=.01), a shorter total sleep time, and a higher sleep latency. Nevertheless, no differences were found between groups in the actigraphy measurements., Conclusions: The BO group had a higher frequency of Mood Disorders, and at the same time a higher number of sleep disturbances in the subjective measurements. It is possible that there is an association between mood symptoms, sleep disturbances, and coffee intake. No differences were found in the sleep profile by using actigraphy., (Copyright © 2020 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España, S.L.U. All rights reserved.)

Introduction: People with schizophrenia and bipolar disorder (BD) have a high risk of unwanted pregnancies and abortions, due to their condition of vulnerability or hypersexuality (common in BD). This is associated with difficulty in planning their actions and lack of sex education and counselling by medical personnel, and can lead to adverse obstetric outcomes and inability to care adequately for their children., Objective: To describe the characteristics in terms of sexual and reproductive health, and the use of contraception and counselling in psychiatric consultations, in a sample of patients with BD and schizophrenia in Medellin, Colombia., Methods: Observational cross-sectional study. We included the 160 participants from the clinical trial, "The effects of a multimodal intervention programme in patients with bipolar disorder and schizophrenia", who were recruited from the mood and psychosis disorders group clinic at Hospital Universitario de San Vicente Fundación in Medellin. They were contacted by phone by a third-year psychiatry resident, who applied a survey about the characteristics of their sex life, contraception and reproduction., Results: Almost all of the patients with schizophrenia were single, had no undergraduate studies and were unemployed. No significant differences were found regarding the age of starting sexual relations when comparing by diagnosis and gender. Almost all patients with schizophrenia and almost half of the patients with BD reported not having an active sexual life. Almost all of those who admitted to having an active sexual life claimed to always use contraception; in the BD group, only 48.8% of single women admitted to using contraception and a little over half of men stated that they used a condom when having sex. A quarter of the pregnancies were unplanned. Although the majority of the patients stated that they had never received information about family planning in the consultations with their psychiatrist, 57.4% of the patients with BD and 78.8% of those who had schizophrenia, considered themselves to be well informed on the subject., Conclusions: Patients with mental illness have cognitive and behavioural alterations that affect their sexual and reproductive lives. Psychiatrists should therefore address this issue, to ensure education in areas such as contraception, family planning and sexually transmitted diseases and help safeguard the safety and quality of life of their patients., (Copyright © 2018. Publicado por Elsevier España, S.L.U.)

Ahead of Print article withdrawn by publisher.

Introduction: A small percentage of Alzheimer's disease (AD) cases are caused by genetic mutations with autosomal dominant inheritance. We report a family with a novel variant in PSEN1., Methods: We performed clinical and genetic evaluation of 93 related individuals from a Colombian admixed population. 31 individuals had whole-genome sequencing., Results: Genetic analysis revealed a missense variant in PSEN1 (NM&#95;000021.3: c.1247T>C p.Ile416Thr), which originated on an African haplotype and segregated with AD logarithm of the odds score of 6. Their clinical phenotype is similar to sporadic AD except for earlier age at onset: the mean age at onset for mild cognitive impairment was 47.6 years (standard deviation 5.83) and for dementia 51.6 years (standard deviation 5.03)., Discussion: Ile416Thr is a novel pathogenic variant that causes AD in the sixth decade of life. The history of the region that included slave importation and admixtures within a confined geographic locale represents a "mini-population bottleneck" and subsequent emergence of a rare dominant mutation., (Copyright © 2018 the Alzheimer's Association. Published by Elsevier Inc. All rights reserved.)

Background: There is minimal information available about acute hepatic porphyrias (AHPs) in developing countries. The aim of this study was to describe the demographics, clinical features, and mortality of AHPs in Colombia., Patients and Methods: 121 patients with presumed diagnosis of AHPs were reported in Colombia between 1944 and 2018. A pooled analysis of 53 patients with confirmed diagnosis was performed to evaluate the demographics, clinical features, and mortality of AHPs in the country. Selected variables were compared by periods (1952-2000 and 2001-2018)., Results: Most attacks occurred in women (66%), with a women-to-man ratio of 39/14. 96% of the patients were diagnosed with AHPs between 15 and 40 years of age. Precipitants were identified in 71% of attacks and more than one precipitant in 41% of them. Drugs (85%) and infections (44%) were the most common precipitants. 11% of women had premenstrual attacks. Abdominal pain was the most common symptom (96%). Cortical blindness, posterior reversible encephalopathy syndrome, and rhabdomyolysis were described. 70% of attacks were confirmed by qualitative test only. 67% of attacks were treated with intravenous heme. The use of heme increased from 4 to 85% in the last two decades. Mortality decreased about twofold in relation to the increase in the use of heme. Severe motor neuropathy was associated with increased mortality. Gonadorelin analogues, heme prophylaxis, and orthotopic liver transplantation have been used to prevent recurrent attacks., Conclusions: Diagnosis and treatment of AHPs in Colombia have improved in recent decades. However, there are still important shortcomings to address.

Introduction: There are few longitudinal studies of dementia in developing countries. We used longitudinal data from the Maracaibo Aging Study to accurately determine the age- and sex-specific incidence of dementia in elderly Latin Americans., Methods: The Diagnostic and Statistical Manual of Mental Disorders (Fourth Edition, Text Revision) was used to diagnose dementia, which was classified as Alzheimer's disease, vascular dementia, or other. Age- and sex-specific incidence was estimated as the number of new cases of dementia divided by person-years (p-y) of follow-up., Results: The incidence of all dementia diagnoses was 9.10 per 1000 p-y (95% confidence interval [CI] 7.13-11.44; 8026 total p-y), 5.18 for Alzheimer's disease (95% CI 3.72-7.03; 7916 total p-y), and 3.35 for vascular dementia (95% CI 2.19-4.91; 7757 total p-y)., Discussion: Among Maracaibo Aging Study participants younger than 65 years, the incidence of dementia was higher than that of US Whites. Among individuals older than 65 years, the incidence was comparable to the mean of previous incidence estimates for other populations worldwide., (Copyright © 2017 the Alzheimer's Association. Published by Elsevier Inc. All rights reserved.)

Introduction: Exposure to armed conflict produces biological adaptations oriented to handle the highly stressful conditions in war environments. The special features of The Colombian armed create a special scenario to evaluate the human behavior., Objective: In this study, psychiatric, cognitive and emotional processing characteristics of a group of Colombian armed illegal forces of ex-combatants are described., Methods: Sixty-three ex combatants and 22 controls were assessed with WAIS (IQ), INECO frontal screening (executive functions), Interpersonal Reactivity Index (empathy), emotional features recognition and MINI (psychiatric profile)., Results: When compared to the control group, ex-combatants showed higher frequency of antisocial personality disorder (P=.031) and behavioral dissocial disorder (P=.017). In cognitive profile, the ex-combatants showed a lower score in the executive function test (Me=18.50; RQ=4.00), control (Me=23.00; RQ=5.25), with a poor personal distress in emphatic profile (Me=10.00; RQ=5.00) compared to control group (Me=37.00; RQ=7.25)., Conclusions: We found differences in cognitive and psychiatric profile in ex-combatants in comparison with controls., (Copyright © 2015 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España. All rights reserved.)

Objective: To empirically identify schizophrenia neurocognitive subtypes and establish their association with clinical characteristics., Methods: Sustained attention, executive function, facial emotion recognition, verbal learning, and working memory tests were applied to 253 subjects with schizophrenia. We identified neurocognitive subtypes by a latent class analysis of the tests results. After, we made a search for the association of these subtypes with clinic characteristics., Results: We identified four neurocognitive subtypes: 1) &#8220;Global cognitive deficit&#8221;, 2) &#8220;Memory and executive function deficit&#8221;, 3) &#8220;Memory and facial emotion recognition deficit,&#8221; and 4) &#8220;Without cognitive deficit.&#8221; In comparison with the subtype &#8220;without cognitive deficit,&#8221; we found that the &#8220;memory and executive function deficit subtype&#8221; and the &#8220;global cognitive deficit subtype&#8221; had a higher frequency of male, unemployed, severe impairment, and adherence to treatment participants. However, in the &#8220;global cognitive deficit subtype&#8221; the differences were higher and there was also a lower frequency of past major depressive episodes (OR 0.39; 95%CI: 0.16 to 0.97). The &#8220;memory and facial recognition deficit subtype&#8221; had a higher probability of severe impairment (OR 5.52; 95%CI: 1.89 to 16.14) and unemployed (OR 2.43; 95%CI: 1.06 to 5.55) participants, but also a lower probability of past depressive episodes (OR 0.21; 95%CI: 0.07 to 0.66)., Conclusion: Our results suggest the existence of four neurocognitive subtypes in schizophrenia with a spectrum of dysfunction and severity. We found higher dysfunction in those with worse cognitive dysfunction, and higher affective psychopathology and less treatment adherence in those with less cognitive dysfunction.

Background: The Spanish version of the cognitive impairment in psychiatry scale screening scale has been developed as a response to the needs arising in clinical practice during the evaluation of mental illness patients, but the performance is not known in the Colombian population with bipolar disorder I. This paper tries to establish construct validity and stability of the scale in patients with bipolar disorder I in the city of Manizales., Methods: Construct validity was estimated by comparing the measurement in two divergent groups, a control group and a group with bipolar disorder I. It was also compared to a Neuropsychological battery measuring the same scale domains. The correlation between each one of the sub-tests of the scale and stability was evaluated through the reliability test-retest in the group with bipolar disorder I., Results: The scale showed discriminatory capacity in cognitive functioning between the control group and the group with bipolar disorder I. The correlation with the neuropsychological battery was estimated by the Spearman test showing results between 0.36 and 0.77, and the correlation between each sub-test of the scale showed correlations between 0.39 and 0.72. Test-retest was measured with the intraclass correlation coefficient (ICC) and their values were between 0.77 and 0.91., Conclusions: The Spanish version of screening scale in the cognitive disorder in psychiatry shows acceptable validity and reliability as a measurement tool in clinical psychiatric practice., (Copyright © 2014 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España. All rights reserved.)

Background: Alzheimer's disease (AD) is the most common cause of dementia; the main risk factors are age and several recently identified genes. A major challenge for AD research is the early detection of subjects at risk. The aim of this study is to develop a predictive model using proton magnetic resonance spectroscopy (1H-MRS), a noninvasive technique that evaluates brain chemistry in vivo, for monitoring the clinical outcome of carriers of a fully penetrant mutation that causes AD., Methods: We studied 75 subjects from the largest multigenerational pedigree in the world (∼5000 people) that segregates a unique form of early-onset Alzheimer's disease (EOAD) caused by a fully penetrant mutation in the Presenilin-1 gene (PSEN1 p.Glu280Ala [E280 A]). Forty-four subjects were carriers of the mutation, and 31 were noncarriers. Seventeen carriers had either mild cognitive impairment (MCI) or early-stage AD (collectively MCI-AD). In right and left parietal white mater and parasagittal parietal gray matter (RPPGM and LPPGM) of the posterior cingulate gyrus and precuneus, we measured levels of the brain metabolites N-acetylaspartate (NAA), inositol (Ins), choline (Cho), and glutamate-glutamine complex (Glx) relative to creatine (Cr) levels (NAA/Cr, Ins/Cr, Cho/Cr, and Glx/Cr, respectively) with two-dimensional 1H-MRS. Using advanced recursive partition analysis and random forest analysis, we built classificatory decision trees for both mutation carrier status and the presence of MCI-AD symptoms, fitting them to 1H-MRS data while controlling for age, educational level, and sex., Results: We found that (1) the combination of LPPGM Cho/Cr<0.165 and RPPGM Glx/Cr>1.54 fully excluded carriers; (2) LPPGM Cho/Cr>0.165, RPPGM Glx/Cr<1.54, and left parietal white mater NAA/Cr>1.16 identified asymptomatic carriers with sensitivity of 97.7% and specificity of 77.4%; and (3) RPPGM NAA/Cr>1.05 defined asymptomatic subjects (independent of carrier status) with sensitivity of 100% and a specificity of 96.6%., Conclusions: Brain metabolites measured by 1H-MRS in the posterior cingulate gyrus and precuneus are optimally sensitive and specific potential noninvasive biomarkers of subclinical emergence of AD caused by the PSEN1 p.Glu280Ala (E280 A) mutation., (Copyright © 2014 The Alzheimer's Association. All rights reserved.)

Introduction: Cognitive decline could begin 20 years before the diagnosis of dementia. Besides age, several factors related to medical, socioeconomic, and behavioral and genetic condition may be associated with cognitive decline. The aim of this systematic review was to summarize evidence on the risk and protective factors for cognitive decline in people under 65 years old., Methods: A systematic review was conducted using a search strategy in MEDLINE and Embase, including longitudinal studies to analyze the effect of protective or risk factors on cognitive decline in a population under 65 years old., Results: A total of 22 studies were included in this review. Factors such as diabetes, hyperinsulinemia, overweight or obesity, metabolic syndrome, education, physical activity, cognitive stimulation, marital status and diet, could be related to cognitive decline before 65 years of age., Conclusions: Cardiovascular risk factors and lifestyle conditions may be associated with cognitive decline before 65 years of age. However, the quality of the evidence was low., (Copyright © 2013 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España. All rights reserved.)

Objective: To determine whether there are differences in verbal working memory amongst subjects with schizophrenia, their first degree relatives and controls, and to evaluate the influence of symptoms on these differences, as an initial step to assess whether this cognitive function is an endophenotype., Methods: We examined 197 cases with schizophrenia, 197 first degree relatives and 200 controls through psychiatric interviews and the Letters and Numbers Sequencing test (LNS). Performance was compared among the three groups adjusting for age, sex and education level. Adjustment for “negative symptoms” and “disorganization” was performed afterwards., Results: Subjects with schizophrenia showed lower performance in the LNS than their first degree relatives and the healthy controls; the effect sizes were 0.75 and 1.18 respectively. There was a small difference between relatives and controls (effect size =0.38). These differences were significant after adjustment for negative and disorganized symptoms, but the effect sizes became smaller: 0.26 for relatives vs. subjects with schizophrenia, 0.56 for controls vs. subjects with schizophrenia and 0.33 for relatives vs. controls. Among individuals with schizophrenia, performance in the LNS was not associated with disorder duration, disease onset age, antipsychotics, history of depressive episodes or substance use disorders., Conclusion: Results suggest verbal working memory may be considered as an endophenotype in schizophrenia.

Introduction: Empathy is one of the main concepts of in social neurosciences. It is defined as a trait with multiple dimensions allowing individuals to place themselves in the emotional states of others. Colombia has an irregular, internal and long-lasting armed conflict which has been increasing its cruelty levels., Objectives: to assess the empathy dimensions of 285 ex-combatants from the internal Colombian conflict, using the Interpersonal Reactivity Index(IRI) in Spanish. METHODOLOGY AND SUBJECTS: a sample of 285 male ex-combatants, 241 (84, 6%) males: 85,3% paramilitaries, and 14,7% guerillas. The 28 Item IRI questionnaires were administered. 3 exploratory factor analyses (EFA) were performed. Confirmatory factor analyses (CFA) were developed using structural equation procedures., Results: The first EFA obtained 9 factors (KMO=0,74, variance 54,7% and internal consistency (IC): 0,22 - 0,63). The second EFA produced 20 items with burdens above 0,4 and showed a 6-factor structure (KMO=0,70, variance 50,3%, IC: 0,37 - 0,63). The third EFA forced the 4 original IRI dimensions (KMO=0,74, variance 33,77, IC: 0,44 - 0,77. CFAs showed goodness of adjustment indexes adequate for the three models. The 4-factor model obtained the lowest value, while the 6-factor model obtained the highest. The 4- factor model showed the best IC., Conclusion: The Spanish IRI administered to ex-combatants of the Colombian conflict has possible structures of 4, 6 and 9 factors. The best adjustment was for the 6-fctor. The 4-factor model exhibited the best IC., (Copyright © 2013 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España. All rights reserved.)

Objective: Analyzing the IQ and associated factors in school children aged 6 to 8 years old from the northeastern and northwestern districts of Medellin, Colombia., Materials and Methods: Simple, random, stratified sampling was carried out according to grade, level and commune; the sample consisted of 423 male and female children. The Wechsler intelligence scale (WISCIV) was used for evaluating the children's IQ and the Home Observation for Measurement of the Environment (HOME) for evaluating the children's psychosocial stimulation/quality of their home environment. WHO cutoff points were used as reference standards for assessing their nutritional status., Results: The following risk factors explained IQ scores and rates: the parents' academic problems, the siblings' behavioral problems, the mothers' alcoholism during pregnancy and aggressive behavior at home., Conclusion: The IQ scores and associated rates for children who attended early school years in the two poorest districts of Medellin were correlated with psychosocial background factors and aggressive behavior at home.

Objective: This study was aimed at establishing subgroups having specific socioeconomic characteristics by using latent class analysis as a method for segmenting target population members of the MANA-ICBF supplementary food program in the Antioquia department of Colombia and determine their differences regarding poverty and health conditions in efficiently addressing pertinent resources, programs and policies., Methods: The target population consisted of 200,000 children and their households involved in the MANA food assistance program; a representative sample by region was used. Latent class analysis was used, as were the expectation-maximization and Newton Raphson algorithms for identifying the appropriate number of classes., Results: The final model classified the households into four clusters or classes, differing according to well-defined socio-demographic conditions affecting children's health., Conclusions: Some homes had a greater depth of poverty, therefore lowering the families' quality of life and affecting the health of the children in this age group.

Endophenotypes are neurobiological markers cosegregating and associated with illness. These biomarkers represent a promising strategy to dissect ADHD biological causes. This study was aimed at contrasting the genetics of neuropsychological tasks for intelligence, attention, memory, visual-motor skills, and executive function in children from multigenerational and extended pedigrees that cluster ADHD in a genetic isolate. In a sample of 288 children and adolescents, 194 (67.4%) ADHD affected and 94 (32.6%) unaffected, a battery of neuropsychological tests was utilized to assess the association between genetic transmission and the ADHD phenotype. We found significant differences between affected and unaffected children in the WISC block design, PIQ and FSIQ, continuous vigilance, and visual-motor skills, and these variables exhibited a significant heritability. Given the association between these neuropsychological variables and ADHD, and also the high genetic component underlying their transmission in the studied pedigrees, we suggest that these variables be considered as potential cognitive endophenotypes suitable as quantitative trait loci (QTLs) in future studies of linkage and association.

Introduction: Previous studies related alterations in non-conventional seminal parameters with recurrent early embryonic death for one couple. A reference standard of clinical assessment is required for the management of these kinds of patients., Objective: Normal semen parameters were established based on functional tests including lipid peroxidation of sperm membranes, antioxidant capacity of seminal plasma and integrity of sperm chromatin to compare with men whose partners have recurrent early embryonic death. These parameters set reference values to identify subfertile individuals whose condition can be attributed to altered semen parameters., Materials and Methods: The conventional and non-conventional semen parameters of 47 samples of semen were evaluated. Thirty-six samples were from subfertile individuals whose partners had a history of early recurrent embryo death, and 11 samples were from individuals with recent evidence of normal fertility., Results: By discriminant analysis, the two groups were classified as follows: a value below 0.50 for 86.1% of individuals in the group of recurrent early embryonic death, and a value above 0.50 to classify 81.8% of individuals in the group of recent fertility., Conclusions: This reference value of 0.5 based on the results of sperm tests can identify infertile male patients whose partners have a history of early embryonic death. This will aid the physician to suggest treatments more focused on the possible cause of subfertility.

Introduction: Standard questionnaires to characterize familial attention deficit hyperactivity disorder (ADHD) of adults have been studied in some studies., Aim: To observe convergent and concurrent validity of four standard rating scales to quantify the familial ADHD symptoms of adults., Patients and Methods: The sample was constituted by the 392 adults; aged 18 through 84 years, belonging to 141 Antioquian families with multiple ADHD affected members, who fulfilled by self-report the Wender-Utah Rating Scale and the ADHD checklist; and, beside, answered a questionnaire asking for current and past ADHD symptoms, in a neurological interview. Correlation analyses were done. Sensitivity and specificity for ADHD diagnosis were also determined., Results: Significant and over 0.6 correlations were observed between scales that explored past ADHD symptoms. Distant cut-off points for 90% sensitivity and specificity were observed for all questionnaires. The best LR+ (12.15) was found for the report of 5 or more past hyperactivity-impulsivity symptoms; follow by the report of 7 or more past ADHD symptoms (6.92)., Conclusions: Cut-off points should be taken with caution when these rating scales were used for adult ADHD screening. Psychometric properties do not allow using these scales as substitution of structured clinical interview for the gold standard ADHD diagnosis in adults.