CIRCADIAN RHYTMICITY AND DEPRESSION
Abstract
BACKGROUND Depression is the most common psychiatric syndrome treated on the primary level. Abnormal patterns of circadian rhythms are associated with a large variety of affective disorders including depression. Sleep disruption is one of the major symptoms in depression,with majority of patients with major depression reporting difficulties with their sleep. Inhumans, the »biological clock« is the site of generation of entrainment of circadian rhythms.It is located in the suprachiasmatic nuclei of the anterior hypothalamus and is functionally interconnected with the melatonergic system. Melatonergic receptors type 1 and 2participate in the regulation of the suprachiasmatic nucleus activity. When stimulated,receptors type 1 mediate the amplitude of the suprachiasmatic nucleus activity while receptors type 2 control phase shifting of the same activity. On the neurobiological level, depression is complex mood disorder that is also associated with the functional impairment ofseveral central nervous systems including noradrenergic, serotonergic and dopaminergictransmitters and several hormonal systems. CONCLUSIONS There is a grooving evidence that dysfunction in circadian rhythm regulation andmelatonergic system function is involved in depression pathogenesis. It is known thatclinically used antidepressants have influence on melatonergic system, probably throughchanged ratio between melatonergic type 1 and 2 receptors. With the clinical use of newcompounds like agomelatine that directly regulates melatonergic system new opportunities in depression treatment emergedDownloads
The Author transfers to the Publisher (Zdravniški vestnik/Slovenian Medical Journal) all economic copyrights following form Article 22 of the Slovene Copyright and Related Rights Act (ZASP), including the right of reproduction, the right of distribution, the rental right, the right of public performance, the right of public transmission, the right of public communication by means of phonograms and videograms, the right of public presentation, the right of broadcasting, the right of rebroadcasting, the right of secondary broadcasting, the right of communication to the public, the right of transformation, the right of audiovisual adaptation and all other rights of the author according to ZASP.
The aforementioned rights are transferred non-exclusively, for an unlimited number of editions, for the term of the statutory
The Author can make use of his work himself or transfer subjective rights to others only after 3 months from date of first publishing in the journal Zdravniški vestnik/Slovenian Medical Journal.
The Publisher (Zdravniški vestnik/Slovenian Medical Journal) has the right to transfer the rights, acquired parties without explicit consent of the Author.
The Author consents that the Article be published under the Creative Commons BY-NC 4.0 (attribution-non-commercial) or comparable licence.