Andrés Camargo currently works at the School of Medicine, Universidad de Ciencias Aplicadas y Ambientales. Andrés does research in Chronobiology, Molecular Biology, Physiology and Neuroscience.
LÍNEAS DE INVESTIGACIÓN: Cronobiología aplicada al cuidado de la salud humana.
FACULTAD: Ciencias de la Salud
CATEGORÍA COLCIENCIAS: Asociado
NIVEL DE FORMACIÓN: Maestría/Magister
Substance use and suicide risk in a sample of young Colombian adults: An exploration of psychosocial factors
Fecha de publicación: 30/06/2017
Background and Objectives: Young adults might engage in many risk behaviors, including alcohol and drug use, which could lead to mental health problems, such as suicide. The aim of this study was to examine specific psychosocial and clinical factors that could influence the possible relationship between polysubstance use (PSU) and suicide risk in a sample of young Colombian participants. Methods: A sample of 274 young participants (mean age = 21.3 years) was evaluated with two substance use screening tests (ASSIST and AUDIT) and five scales for clinical and psychosocial factors and suicide risk: The Center for Epidemiologic Studies Depression scale, Zung Self-Rating Anxiety scale, Family APGAR, the Childhood Trauma Questionnaire, and the Plutchik Suicide Risk scale. Correlation and multiple regression analyses were conducted. Results: Use of cannabis and tobacco was significantly correlated with suicide risk in the total sample (p <.05). Depressive and anxiety symptoms, family functioning, and emotional abuse during childhood were significantly associated with suicide risk (p <.001), while alcohol use, anxiety symptoms, and family functioning were variables significantly related to PSU. Discussion and Conclusions: Our findings are consistent with previous evidence suggesting a relationship between substance use, several psychosocial factors, and suicide risk in young participants. Scientific Significance: Our study is one of the first reports the relationship between substance use and suicide risk in a Latin American population. (Am J Addict 2017;26:388–394)
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Mood rhythmicity is associated with depressive symptoms and caffeinated drinks consumption in South American young adults
Fecha de publicación: 01/02/2019
Among the factors that contribute to the onset and maintenance of depressive disorders, rhythmicity of symptoms and consumption of caffeine have recently gained attention. The current study aimed to examine the differential rhythmicity of relevant variables in a sample of young participants, considering the presence of depressive symptomatology and the frequency of caffeinated drinks consumption. A significant 24-hour differential rhythmicity of mood, cognitive and physiological variables was found indicating an evening peak pattern in the participants with depressive symptoms. Interestingly, caffeinated drinks consumption was differentially associated with self-perceived peaks, according to the presence of depressive symptomatology. Our findings are among the first reports about the potential association of the 24-hours rhythmicity of relevant mood-related variables, depressive symptoms, and caffeine intake. These results support the view that the identification of risk factors for depression, and the application of novel measurements and analysis methods in the development of new preventive strategies should be a public health priority
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Mismatch between perceived family and individual chronotype and their association with sleep-wake patterns
Fecha de publicación: 01/05/2019
While social zeitgebers are known to shape diurnal preference, little research has been devoted to determining the contribution of the familiar group chronotype as social zeitgeber on individual circadian rhythms and sleep-wake patterns in adult subjects. The current study aimed to examine the matching between perceived family chronotype and individual chronotype and their relationship with sleep-wake patterns on weekdays and weekends, diurnal subjective somnolence, and substance consumption. Nine hundred and forty-two Colombian adults completed the Composite Scale of Morningness, the Epworth Sleepiness Scale, and responded to a questionnaire about circadian preferences of their family nucleus. We found evidence of a mismatch between perceived family and individual chronotype, mainly for morning-type individuals (Cohen’s Kappa = −0.231; p < 0.001). This mismatch was associated with diurnal subjective somnolence (β = 0.073; p < 0.001) and specific sleep-wake patterns (p < 0.01). In addition, subjects with evening-type families showed higher caffeine and alcohol consumption (p < 0.001). To our knowledge, this is the first study to assess and report the mismatching between perceived family and individual chronotypes, and it adds to the existing body of knowledge regarding the influence of social zeitgebers on circadian rhythms. This is particularly relevant since mismatching between circadian physiology and environmental cues have been shown to lead to diverse pathologies.
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Cuidando demonios, vampiros, hombres lobos y zombis a lo largo de la historia entre la realidad y la fantasía
Fecha de publicación: 31/12/2016
Las enfermedades son tan antiguas como el hombre y cada enfermedad presenta una variedad propia de signos y de síntomas, que se ven reflejados en lo físico y en lo mental. Tienen, además, unas repercusiones sociológicas, dependiendo de sus manifestaciones clínicas, el estado del conocimiento actual, la ciencia y la religión, que las tratan de explicar. El objetivo a lo largo de este artículo es contrastar y reflexionar acerca de las explicaciones místicas y científicas de varias enfermedades, que atormentaron a quienes las padecían y a las sociedades, por el desconocimiento que existía hacia ellas y las consecuencias que trajo para quien las padecía. A partir de conceptos definidos por el autor, asociando mitos y enfermedades, se realizó una búsqueda sistemática y temática de literatura científica, donde como resultado, se encontró que esta asociación generó una época de irracionalismo y superstición a lo largo de la historia del hombre, desde la antigüedad hasta la actualidad. Se analizó la depresión y la ansiedad, la epilepsia, la parálisis del sueño, la porfiria, la hipertricosis, la licantropía clínica y la rabia, donde se encontró que estas enfermedades, por su cuadro clínico, dieron lugar a explicaciones erradas y místicas, que llevaron a la sociedad a aislar, rechazar y actuar, de manera violenta, hacia las personas que las sufrían, fomentando mitos, cuentos y leyendas, que fueron reforzados y trasmitidos de generación en generación, en el folclor por la tradición oral, la literatura, el arte y, actualmente, por el cine, la televisión y la Internet.
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Anxiety symptomatology, sex and chronotype: The mediational effect of diurnal sleepiness
Fecha de publicación: 03/09/2018
Diurnal subjective sleepiness has been associated with a large number of negative outcomes, such as increased risk of accidents and development of mental disorders as depression and anxiety. However, the role of the diurnal subjective sleepiness as a mediator is poorly understood. The goal of the present study was to examine the role of diurnal subjective sleepiness as a mediator of the relationship between sex, chronotype and anxiety symptoms in healthy young adults. Four-hundred and sixty-seven healthy young adults (64.8% females, age range 18–32 years, mean 20.7, ±2.3) were evaluated with validated and widely used scales for the measurement of diurnal sleepiness, anxiety symptoms and morningness–eveningness preference. We have found that diurnal subjective sleepiness correlated with anxiety symptoms when evaluated both in the total sample and within chronotypes. This association was more important in females than in males (p < 0.0001). Regarding chronotype, only for morning-types, diurnal subjective sleepiness was a significant mediator of the relationship between sex and anxiety symptoms. This is the first study that examines the mediator role of diurnal subjective sleepiness in the known relationship between sex and anxiety symptoms, and adds new evidence about the effect of the chronotype on sleep problems and mental health. Although future work is required, our results have important implications for clinical settings and public health interventions
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