Utjecaj perinatalne primjene agonista serotonina na ekspresiju gena za monoaminske transportere u mozgu odraslih štakora

master's thesis

• Title (english): The effect of perinatal treatment with 5HT agonists on monoamine transporters` gene expression in adult rats
• Author: Daria Kveštak
• Mentor: Dubravka Hranilović (mentor)
• Committee member: Dubravka Hranilović (predsjednik povjerenstva)
• Committee member: Maja Matulić (član povjerenstva)
• Committee member: Željka Vidaković-Cifrek (član povjerenstva)
• Committee member: Vesna Benković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2012-09-21, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Serotonin (5HT) je biološki aktivan amin koji se kod sisavaca nalazi u mozgu i perifernim tkivima. U mozgu regulira razvoj 5HT neurona i ciljnih tkiva tijekom neurogeneze, dok kasnije ima funkciju neurotransmitera. Unutarstaničnu i izvanstaničnu koncentraciju 5HT reguliraju dvije vrste transportera. U mozgu, serotoninski transporter (5HTt) odgovoran je za prijenos 5HT iz sinaptičke pukotine u presinaptički neuron dok je vezikularni monoaminski transporter 2 (VMAT2) odgovoran za prijenos 5HT iz citoplazme presinaptičkog neurona u sinaptičke vezikule. U ovom radu istražila sam utjecaj perinatalne primjene 5-hidroksitriptofana ili tranilcipromina na ekspresiju gena za 5HTt i VMAT2 u odraslih štakora. Tretman 5-hidroksitriptofanom uzrokovao je značajno povećanje ekspresije gena za VMAT2 u jezgrama rafe. Tretman tranilciprominom uzrokovao je značajno povećanje ekspresije gena za VMAT2 u jezgrama rafe i gena za 5HTt u frontalnoj kori. Rezultati pokazuju da je tretman agonistima serotonina uzrokovao (dugo)trajne kompenzatorne promjene u ekspresiji gena koji reguliraju homeostazu serotonina u središnjem odjeljku.

Abstract (english)

Serotonin (5HT) is a biologically active amine present in mammals in the brain and the peripheral tissues. In the brain, it regulates the development of 5HT neurons and target tissues during neurogenesis, while later it assumes the function of neurotransmitter. Intracellular and extracellular concentration of 5HT is controlled by two types of transporters. Serotonin transporter (5HTt) in brain is responsible for the transport of serotonin from the synaptic cleft into the presynaptic neurons, while vesicular monoamine transporter 2 (VMAT2) is responsible for the transport of monoamines from the cytoplasm of presynaptic neuron into the synaptic vesicles. In this study I examined the impact of the perinatal treatment with 5- hydroxytryptophan or tranylcypromine on the expression of genes for 5HTt and VMAT2 in adult rats. Treatment with 5-hydroxytryptophan induced a significant increase in VMAT2 gene expression in raphe nuclei. Treatment with tranylcypromine induced a significant increase in VMAT2 gene expression in raphe nuclei and significant increase in 5HTt gene expression in frontal cortex. The results suggest that treatment with serotonin agonists have induced long-lasting compensatory changes in the expression of genes involved in central serotonin homeostasis.

• Keywords: 5HT; 5HTt; VMAT2; 5-hidroksitriptofan; tranilcipromin; ekspresija gena
• Keywords (english): 5HT; 5HTt; VMAT2; 5-hydroxytryptophan; tranylcipromine; gene expression
• Language: croatian
• URN:NBN: urn:nbn:hr:217:479504
• Study programme: Title: Molecular Biology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra molekularne biologije (magistar/magistra molekularne biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-05-02 09:20:07