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    <ns1:title language="sr">Analiza fosforilacije glukokortikoidnog receptora u limfocitima zdravih ljudi i pacijenata sa akutnom epizodom depresivnog poremećaja </ns1:title>
    <ns2:subtitle language="sr">doktorska disertacija</ns2:subtitle>
    <ns2:alt_title language="en">Analysis of lymphocyte glucocorticoid receptor phosphorylation in healty subjets and patients with current episode of depressive disorder : doctoral dissertation</ns2:alt_title>
    <ns1:language>sr</ns1:language>
    <ns1:description language="sr">Depresivni poremećaj (DP) je multifaktorijalno oboljenje, široko rasprostranjeno u svetu, i rasvetljavanje mehanizama koji su u osnovi ovog poremećaja predstavlja jedan od najvećih izazova biomedicinskih istraţivanja današnjice. Narušena funkcija hipotalamo-hipofizno-adrenalne (HHA) ose, kao i signalizacija preko glukokortikoidnog receptora (GR), čest su nalaz kod pacijenata sa DP-om. Takođe, određeni stepen disfunkcije HHA ose i samog GR-a uočavaju se i kod zdravih ljudi i pretpostavlja se da to predstavlja jedan od faktora rizika za razvoj kliničke depresije. S druge strane, uspešno lečenje pacijenata sa depresijom, praćeno je normalizacijom aktivnosti HHA ose i funkcije GR-a.
GR je ligand-zavisan transkripcioni faktor, koji nakon vezivanja glukokortikoida (krajnjih produkata aktivnosti HHA ose) prelazi iz citoplazme u jedro gde reguliše ekspresiju velikog broja gena. Vaţan način regulacije funkcije GR-a postiţe se njegovom fosforilacijom koja je posredovana aktivnošću kinaza, koje se aktiviraju u odgovoru na različite ćelijske signale. Fosforilacija GR-a na serinu 211 (S211) stimuliše ulazak receptora u jedro i generalno se smatra biomarkerom njegove povećane transkripcione aktivnosti, dok je za fosforilaciju GR-a na serinu 226 (S226), koja je posredovana c-Jun N-terminalnim kinazama (eng. c-Jun N-terminal kinases, JNK), pokazano da inhibira njegovu transkripcionu aktivnost i stimuliše izlazak GR-a iz jedra u citoplazmu.
Među genima stimulisanim glukokortikoidima su GILZ (eng. glucocorticoid-induced leucine zipper, GILZ), vaţan posrednik anti-inflamatornih efekata GR-a, i FKBP5 (eng. FK506 binding protein 5, FKBP5), koji ima vaţnu ulogu u ograničavanju glukokortikoidne signalizacije u ćeliji, sprečavajući translokaciju GR-a iz citoplazme u jedro...
</ns1:description>
    <ns1:description language="en">Major  depressive  disorder  (MDD)  is  a  multifactorial  illness  that  a
ffects  people 
across  the  globe
and
u
derstanding  mechanisms
underlying  this  disorder
represents
a 
major  challenge
of  biomedical  research
today.  One  of  the  most  consistent  findings 
among patients with MDD is dysfunctional hypothalamic
–
pituitary
–
adrenal (HPA)
axis, 
caused  by  altered  function  of  the  glucocorticoid  receptor  (GR).  In  healthy  population, 
individuals  with  impaired  HPA  axis  and  GR  function  are  also  observed,  and  these 
features  are  believed  to  represent  increased 
risk 
factors 
for  depression
.  On  the  o
ther 
hand, 
successful  antidepressant  treatments  ameliorate  many  of  the 
neuroendocrine 
disturbances observed in depression
.
The   GR   is   ligand
-
activated   transcriptional   factor   that   apon   glucocorticoid 
binding  (glucocorticoids  are  end  products  of  HPA  axis  acti
vity)  translocate  from  the 
cytoplasm  to  the  nucleus  where  it  modulates  the  expression  of  wide  variety  of  genes. 
Phoshor
y
lation  of 
the 
GR,  mediated by  activity  of  diverse  cellular  kinases,  is  imprtant 
way  of  regulating  GR  function.  The  GR  phosphorylation  at
S211  promotes  GR 
translocation   to   the   nucleus   and   enhances   its   transcriptional   activity
,
while   GR 
phosphorylation  at  S226,  mediated  by
c
-
Jun  N
-
terminal  kinases  (JNK),
inhibits  its 
transcriptional activity and promotes GR nuclear export.
Some  of  m
yriad
of 
genes 
whose
expression  is 
stimu
late
d  by 
the 
GR  are 
glucocorticoid
-
induced leucine zipper (GILZ),
an
important mediator of glucocorticoid 
anti
-
imflamatory actions, and FK506
binding protein 5
(FKBP5), which is a part of an 
intracellular ultra
-
short negative
feedback loop for GR activity...</ns1:description>
    <ns1:description language="sr">Biologija - Molekularna biologija psihijatrijskih poremećaja / Biology- Molecular biology of psychiatric disorders 
Datum odbrane : 30. 01.2014</ns1:description>
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    <ns1:keyword language="en">major depressive disorder; phosphorylation of glucocorticoid receptor; JNK; GILZ; FKBP5; symptoms of depression, anxiety and stress in healthy subjects</ns1:keyword>
    <ns1:keyword language="sr">577.25[611/612-056.32+616.895.4](043.3)</ns1:keyword>
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