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Scientific studies have found that different brain areas show altered activity in humans with major depressive disorder (MDD), and this has encouraged advocates of various theories that seek to identify a biochemical origin of the disease, as opposed to theories that emphasize psychological or situational causes. Factors spanning these causative groups include nutritional deficiencies in magnesium, vitamin D, and tryptophan with situational origin but biological impact. Several theories concerning the biologically based cause of depression have been suggested over the years, including theories revolving around monoamine neurotransmitters, neuroplasticity, neurogenesis, inflammation and the circadian rhythm. Physical illnesses, including hypothyroidism and mitochondrial disease, can also tr

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  • وجدت الدراسات العلمية أن العديد من المناطق الدماغية تظهر نشاط متغير في المرضى الذين يعانون من الاكتئاب، وهذا ما شجع دعاة النظريات المختلفة التي تسعى إلى تحديد أصل بيوكيميائي للمرض، على عكس النظريات التي تأكد على الأسباب النفسية. وقد اقترحت عدة نظريات حول السبب البيولوجي للاكتئاب على مر السنين، بما في ذلك النظريات التي تدور حول المواد الكيميائية الناقلة واللدونة العصبية والالتهاب والنظام اليومي. (ar)
  • Scientific studies have found that different brain areas show altered activity in humans with major depressive disorder (MDD), and this has encouraged advocates of various theories that seek to identify a biochemical origin of the disease, as opposed to theories that emphasize psychological or situational causes. Factors spanning these causative groups include nutritional deficiencies in magnesium, vitamin D, and tryptophan with situational origin but biological impact. Several theories concerning the biologically based cause of depression have been suggested over the years, including theories revolving around monoamine neurotransmitters, neuroplasticity, neurogenesis, inflammation and the circadian rhythm. Physical illnesses, including hypothyroidism and mitochondrial disease, can also trigger depressive symptoms. Neural circuits implicated in depression include those involved in the generation and regulation of emotion, as well as in reward. Abnormalities are commonly found in the lateral prefrontal cortex whose putative function is generally considered to involve regulation of emotion. Regions involved in the generation of emotion and reward such as the amygdala, anterior cingulate cortex (ACC), orbitofrontal cortex (OFC), and striatum are frequently implicated as well. These regions are innervated by a monoaminergic nuclei, and tentative evidence suggests a potential role for abnormal monoaminergic activity. (en)
  • La biologie de la dépression regroupe l'ensemble des études et des théories cherchant à identifier l'importance de la dimension biologique dans le développement de la dépression, de manière le plus souvent complémentaire (mais parfois opposée) aux théories qui soulignent les causes psychologiques ou contextuelles (environnementales). Des études scientifiques ont constaté que de nombreuses régions cérébrales montrent une activité altérée chez certains patients souffrant de dépression, ou que certaines versions de gènes (5-HTTLPR par exemple) sont différemment exprimées chez certains patients atteints. Ceci a entraîné l'élaboration de diverses théories qui cherchent à déterminer l'origine biochimique de la maladie. Plusieurs théories concernant la cause de dépression biologiquement basées ont été suggérées au fil des années. L'hypothèse monoamine est l'une de ces théories, elle a fait l'objet de nombreuses études dans la littérature scientifique. (fr)
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  • وجدت الدراسات العلمية أن العديد من المناطق الدماغية تظهر نشاط متغير في المرضى الذين يعانون من الاكتئاب، وهذا ما شجع دعاة النظريات المختلفة التي تسعى إلى تحديد أصل بيوكيميائي للمرض، على عكس النظريات التي تأكد على الأسباب النفسية. وقد اقترحت عدة نظريات حول السبب البيولوجي للاكتئاب على مر السنين، بما في ذلك النظريات التي تدور حول المواد الكيميائية الناقلة واللدونة العصبية والالتهاب والنظام اليومي. (ar)
  • Scientific studies have found that different brain areas show altered activity in humans with major depressive disorder (MDD), and this has encouraged advocates of various theories that seek to identify a biochemical origin of the disease, as opposed to theories that emphasize psychological or situational causes. Factors spanning these causative groups include nutritional deficiencies in magnesium, vitamin D, and tryptophan with situational origin but biological impact. Several theories concerning the biologically based cause of depression have been suggested over the years, including theories revolving around monoamine neurotransmitters, neuroplasticity, neurogenesis, inflammation and the circadian rhythm. Physical illnesses, including hypothyroidism and mitochondrial disease, can also tr (en)
  • La biologie de la dépression regroupe l'ensemble des études et des théories cherchant à identifier l'importance de la dimension biologique dans le développement de la dépression, de manière le plus souvent complémentaire (mais parfois opposée) aux théories qui soulignent les causes psychologiques ou contextuelles (environnementales). Plusieurs théories concernant la cause de dépression biologiquement basées ont été suggérées au fil des années. L'hypothèse monoamine est l'une de ces théories, elle a fait l'objet de nombreuses études dans la littérature scientifique. (fr)
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  • بيولوجية الاكتئاب (ar)
  • Biology of depression (en)
  • Biologie de la dépression (fr)
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