Chronic stress induces upregulation of brain-derived neurotrophic factor (BDNF) mRNA and integrin α5 expression in the rat pineal gland

2006 ◽  
Vol 1086 (1) ◽  
pp. 27-34 ◽  
Author(s):  
Alexies Dagnino-Subiabre ◽  
Rodrigo Zepeda-Carreño ◽  
Gabriela Díaz-Véliz ◽  
Sergio Mora ◽  
Francisco Aboitiz
Keyword(s):  
Pineal Gland ◽  
Chronic Stress ◽  
Neurotrophic Factor ◽  
Brain Derived Neurotrophic Factor ◽  
Bdnf Mrna ◽  
Integrin Α5 ◽  
Rat Pineal Gland

scholarly journals Brain-derived neurotrophic factor enhances spontaneous sleep in rats and rabbits

1999 ◽  
Vol 276 (5) ◽  
pp. R1334-R1338 ◽  
Author(s):  
Tetsuya Kushikata ◽  
Jidong Fang ◽  
James M. Krueger
Keyword(s):  
Growth Factors ◽  
Neurotrophic Factor ◽  
Brain Temperature ◽  
Brain Derived Neurotrophic Factor ◽  
Normal Brain ◽  
Sprague Dawley ◽  
Sleep Regulation ◽  
Bdnf Mrna ◽  
Sprague Dawley Rats ◽  
Intracerebroventricular Injections

Various growth factors are involved in sleep regulation. Brain-derived neurotrophic factor (BDNF) belongs to the neurotrophin family; it and its receptors are found in normal brain. Furthermore, cerebral cortical levels of BDNF mRNA have a diurnal variation and increase after sleep deprivation. Therefore, we investigated whether BDNF would promote sleep. Twenty-four male Sprague-Dawley rats (320–380 g) and 25 male New Zealand White rabbits (4.5–5.5 kg) were surgically implanted with electroencephalographic (EEG) electrodes, a brain thermistor, and a lateral intracerebroventricular cannula. The animals were injected intracerebroventricularly with pyrogen-free saline and, on a separate day, one of the following doses of BDNF: 25 or 250 ng in rabbits; 10, 50, or 250 ng in rats. The EEG, brain temperature, and motor activity were recorded for 23 h after the intracerebroventricular injections. BDNF increased time spent in non-rapid eye movement sleep (NREMS) in rats and rabbits and REMS in rabbits. Current results provide further evidence that various growth factors are involved in sleep regulation.

Dose-related effects of venlafaxine on pCREB and brain-derived neurotrophic factor (BDNF) in the hippocampus of the rat by chronic unpredictable stress

2011 ◽  
Vol 23 (1) ◽  
pp. 20-30 ◽  
Author(s):  
Jing-Jing Li ◽  
Yong-Gui Yuan ◽  
Gang Hou ◽  
Xiang-Rong Zhang
Keyword(s):  
Neurotrophic Factor ◽  
Sucrose Solution ◽  
Brain Derived Neurotrophic Factor ◽  
Rat Hippocampus ◽  
Antidepressant Effect ◽  
High Dose ◽  
Sprague Dawley ◽  
Bdnf Mrna ◽  
Adult Rat ◽  
Element Binding Protein

Background: The molecular pathogenesis of depression and psychopharmacology of antidepressants remain elusive. Recent hypotheses suggest that changes in neurogenesis and plasticity may underlie the aetiology of depression. The hippocampus is affected by depression and shows neuronal remodelling during adulthood.Objective: The present study on the adult rat hippocampus, was to evaluate the dose-related effects of chronic venlafaxine on the expression of brain-derived neurotrophic factor (BDNF) and phosphorylated cyclic-AMP response element binding protein (pCREB).Methods: Sprague-Dawley rats were exposed to a variety of chronic unpredictable stressors (CUSs) to establish a depression model. Rats were treated for either 14 or 28 days with venlafaxine (5 and 10 mg/kg, respectively). The hippocampal expression of pCREB and BDNF mRNA and protein was assessed by using immunohistochemistry, western blotting and reverse transcription polymerase chain reaction (RT-PCR).Results: Rats subjected to CUS procedure consumed less sucrose solution compared with non-stressed rats. The CUS influenced exploratory activity resulting in a reduction of the motility counts. Chronic low dose (5 mg/kg, 14 and 28 days), but not high dose (10 mg/kg, 14 and 28 days) of venlafaxine treatment increased the expression of pCREB and BDNF mRNA and protein in the CUS rat hippocampus.Conclusion: Neuronal plasticity-associated proteins such as pCREB and BDNF play an important role both in stress-related depression and in antidepressant effect.

No effect of escitalopram versus placebo on brain-derived neurotrophic factor in healthy individuals: a randomised trial

2015 ◽  
Vol 28 (2) ◽  
pp. 101-109 ◽  
Author(s):  
Ulla Knorr ◽  
Pernille Koefoed ◽  
Mia H. Greisen Soendergaard ◽  
Maj Vinberg ◽  
Ulrik Gether ◽  
...  
Keyword(s):  
Mrna Expression ◽  
Whole Blood ◽  
Neurotrophic Factor ◽  
Messenger Rna ◽  
Randomised Trial ◽  
Significant Negative Correlation ◽  
Brain Derived Neurotrophic Factor ◽  
Healthy Individuals ◽  
Bdnf Mrna ◽  
Significant Difference

ObjectiveBrain-derived neurotrophic factor (BDNF) seems to play an important role in the course of depression including the response to antidepressants in patients with depression. We aimed to study the effect of an antidepressant intervention on peripheral BDNF in healthy individuals with a family history of depression.MethodsWe measured changes in BDNF messenger RNA (mRNA) expression and whole-blood BDNF levels in 80 healthy first-degree relatives of patients with depression randomly allocated to receive daily tablets of escitalopram 10 mg versus placebo for 4 weeks.ResultsWe found no statistically significant difference between the escitalopram and the placebo group in the change in BDNF mRNA expression and whole-blood BDNF levels. Post hoc analyses showed a statistically significant negative correlation between plasma escitalopram concentration and change in whole-blood BDNF levels in the escitalopram-treated group.ConclusionThe results of this randomised trial suggest that escitalopram 10 mg has no effect on peripheral BDNF levels in healthy individuals.

scholarly journals Resilience to Chronic Stress Is Mediated by Hippocampal Brain-Derived Neurotrophic Factor

2011 ◽  
Vol 31 (12) ◽  
pp. 4475-4483 ◽  
Author(s):  
D. Taliaz ◽  
A. Loya ◽  
R. Gersner ◽  
S. Haramati ◽  
A. Chen ◽  
...  
Keyword(s):  
Chronic Stress ◽  
Neurotrophic Factor ◽  
Brain Derived Neurotrophic Factor

Brain-derived neurotrophic factor (BDNF) mRNA in rats with neonatal ibotenic acid lesions of the ventral hippocampus

2002 ◽  
Vol 956 (1) ◽  
pp. 126-135 ◽  
Author(s):  
Paula C Ashe ◽  
Jennifer Chlan-Fourney ◽  
Augusto V Juorio ◽  
Xin-Min Li
Keyword(s):  
Neurotrophic Factor ◽  
Ibotenic Acid ◽  
Brain Derived Neurotrophic Factor ◽  
Ventral Hippocampus ◽  
Bdnf Mrna
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