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The association between serotonin transporter polymorphism, platelet serotonin concentration and insomnia in non-depressed veterans with posttraumatic stress disorder (CROSBI ID 266650)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Kovačić Petrović, Zrnka ; Nedić Erjavec, Gordana ; Nikolac Perković, Matea ; Švob Strac, Dubravka ; Peraica, Tina ; Tudor, Lucija ; Pivac, Nela The association between serotonin transporter polymorphism, platelet serotonin concentration and insomnia in non-depressed veterans with posttraumatic stress disorder // Psychiatria Danubina, 31 (2019), 1; 78-87. doi: 10.24869/psyd.2019.78

Podaci o odgovornosti

Kovačić Petrović, Zrnka ; Nedić Erjavec, Gordana ; Nikolac Perković, Matea ; Švob Strac, Dubravka ; Peraica, Tina ; Tudor, Lucija ; Pivac, Nela

engleski

The association between serotonin transporter polymorphism, platelet serotonin concentration and insomnia in non-depressed veterans with posttraumatic stress disorder

BACKGROUND: The role of serotonin transporter and its functional gene polymorphism (5-HTTLPR, serotonin transporter linked polymorphic region) was investigated in sleep disturbances in various mental disorders, with conflicting findings. Here, the association of particular sleep disturbances with 5-HTTLPR genotypes and platelet serotonin (5-HT) concentration was determined simultaneously in veterans with posttraumatic stress disorder (PTSD), who were subdivided into those with or without comorbid depression. SUBJECTS AND METHODS: Croatian male, medication-free war veterans with PTSD (N=325), subdivided into those with or without comorbid depression, and subdivided further according to the various sleep disturbances, were evaluated using the Structured Clinical Interview, the Hamilton Rating Scale for Depression and the Clinician Administered PTSD Scale. Genotyping and platelet 5-HT concentration measurements were conducted using PCR and spectrofluorimetric methods, respectively. RESULTS: Nominally higher frequency of the 5-HTTLPR LL genotype compared to S carriers (p=0.026 ; χ2 test) and significantly higher platelet 5-HT concentration (p=0.001 ; one-way ANOVA) were detected in non-depressed veterans with PTSD with early insomnia, compared to matched veterans without early insomnia. CONCLUSIONS: Over-representation of the LL genotype of the 5-HTTLPR and higher platelet 5-HT concentrations were detected in veterans with PTSD who did not develop comorbid depression but had severe early insomnia. These results suggest that 5-HTTLPR genotypes and platelet 5- HT concentration are associated with early insomnia in non-depressed veterans with PTSD. Limitations of the study were the cross- sectional nature of the study, biallelic assessment of the 5-HTTLPR, and a lack of use of the specific sleep measurement scales. These results should be replicated in larger samples, validated on different populations, using specific sleep measurement scales and triallelic 5-HTTLPR assessment.

platelet serotonin ; PTSD ; comorbid depression ; serotonin transporter polymorphism ; sleep disturbances

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Podaci o izdanju

31 (1)

2019.

78-87

objavljeno

0353-5053

1849-0867

10.24869/psyd.2019.78

Povezanost rada

Kliničke medicinske znanosti, Temeljne medicinske znanosti

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