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..Intermittent IV-MP, alone or with immunomodulators, has been suggested but insufficiently studied as a strategy to prevent relapses...

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..We hypothesize that inter-individual differences in the activity of the ABCB1 gene can account in part for the great variation in clinical response to antidepressants in psychiatric patients, even at comparable plasma levels...

..There is an overlap in substrate specificity between P-gp and CYP2D6. P-gp is a factor in the uptake of dextromethorphan, but not of melperone...

..This finding can be viewed as a further step into personalized antidepressant treatment...

..This confirms the validity of the P-gp knock-out model and allows for a continued research of the interactions between P-gp, the blood-brain barrier and CNS substances such as antidepressants, neuroleptics and others...

..Budipine concentrations in the abcb1ab knock-out animals were 3.1 times higher than in control mice. This study confirms the important role P-gp plays at the blood-brain barrier and shows that budipine is a substrate of P-gp...

..In male patients, a single measure of HPA-axis dysregulation at admission may serve as a predictor of response to antidepressant treatment in addition to the previously reported repeated measure of the Dex-CRH test...

..In delusional depression HPA overactivity is more distinct than in other subtypes of depression. HPA suppression is thought to contribute to the action of trimipramine...

..No sex differences were found in these changes. Our data suggest that GHRH and CRH augment NREMS promotion after SD. Marked differences appear to exist in peptidergic sleep regulation between spontaneous and recovery sleep...

..These changes could be a "fingerprint" of a rapidly antidepressive treatment...

..These findings support a central role of genes regulating the HPA axis in the causality of depression and the mechanism of action of antidepressant drugs...

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..A weight gain of approximately 3 kg was observed. This unique profile of changes is compatible with the action of mirtazapine at 5-HT-2 receptors, at presynaptic adrenergic alpha 2 receptors, at the HPA system, and on ghrelin and leptin...

..Identifying depressed patients at high risk for MetS using genetic variants could have direct clinical impact on individualized disease management and prevention strategies...

..Whereas the effects of SD on ghrelin levels were relatively weak, our findings are in line with the hypothesis that ghrelin is a sleep-promoting factor in humans. Ghrelin may be involved in sleep promotion after SD...

..This polymorphism results in an amino acid exchange in the C-terminal cytosolic domain of the P2RX7 channel protein, suggesting that the observed P2RX7 polymorphism might play a causal role in the development of depression...

..Our results suggest that non-REM and REM sleep abnormalities during the acute state of the disease are differentially linked to the activity of the HPA axis...

..Hence, an exaggerated cortisol response in the combined DEX/CRH test predicts the recurrence of depressive psychopathology. The test performance can be further optimized if gender and age are taken into account...

..TMEM132D may thus be an important new candidate gene for PD as well as more generally for anxiety-related behavior...

..Moreover, individual differences in mdr1 gene activity may account for variable response patterns at different episodes and development of therapy resistance...

..Moreover, this paradigm allows to investigate the interaction of genetic susceptibility and environmental risk factors...

..45; p = 0.031). As with the hypothalamic-pituitary-adrenal axis system, our results suggest a dysfunction in the DHEA secretion in patients with MS...

..Whether the predominant alteration of the distribution of SWS and delta EEG activity in younger patients with a first episode of major depression has a predictive value for the future course of the disease remains to be investigated...

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..Testing for these SNPs and the HLA-DR*0401 or *0408 alleles allows to identify patients at risk to develop antibodies to IFN-β and may provide helpful information for individual treatment decisions...

..We hypothesize that sleep is impaired after hexarelin since the GHRH/corticotropin-releasing hormone (CRH) ratio is changed in favour of CRH. There are no hints for an interaction of hexarelin and the immune system...

..43; 95% CI: 0.19-0.95). In conclusion, these results suggest a central role of DBI genetic variants in the susceptibility for the development of anxiety disorders that are characterized by the occurrence of panic attacks...

..We demonstrated that this subgroup can be characterized by a set of demographic, clinical and neuroendocrine variables allowing to predict unfavorable outcome at an early stage of treatment...

..Genetic factors and clinical characteristics contribute to the failure of a favorable treatment outcome...

..Further, our data suggest this pathway to be a target for more rapid-acting antidepressants in the future...

..Recently, associations of several single-nucleotide polymorphisms (SNPs) within the CLEC16A gene with multiple sclerosis (MS), type-I diabetes, and primary adrenal insufficiency were reported...

..In search of a suitable endocrinologic challenge test, we investigated dopaminergic sensitivity in patients with de novo parkinsonian syndromes...

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..Recent clinical studies showing different side-effects in patients with P-gp polymorphisms confirm the clinical importance of these findings...

..However, differences in the suppression effects and psychopathological correlation patterns between depressed and panic patients suggest different biological mechanisms of HPA system dysregulation in both disorders...

..These data indicate a high load of genetic variance within SLC6A1 on pathological anxiety and highlight GAT-1 as a promising target for treatment of anxiety disorders with panic symptoms...

..non-attempters. Further studies with more homogeneous samples, drug-free patients and with simultaneous assessment of various parameters of the HPA system are warranted...

..We could show that SNP rs4291 influences ACE activity and HPA-axis hyperactivity and might therefore represent a common pathophysiologic link for unipolar depression and cardiovascular disease...

..Our results show that HTR2A polymorphisms modulate facets of novelty seeking behaviour in healthy adults suggesting that serotonergic neurotransmission is involved in this phenotype...

..These results confirm earlier studies regarding the comorbidities of depression and support the hypothesis that activation of the TNF-alpha system may contribute to the development of a depressive disorder...

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..These results further underline a possible important role of genetic variations within the system controlling serotonergic neurotransmission for the development and course of disease in PD...

..Furthermore, there are no data on the effects of age and gender on nocturnal renin and the interaction between these variables, sleep, growth hormone (GH) and cortisol...

..During the first hours of sleep, ghrelin might promote sleep-associated hGH secretion and contribute to the promotion of SWS...

..CONCLUSIONS: Hypopituitarism occurs often in the post-acute phase after TBI and may normalize later, but may also develop after the post-acute phase of TBI...

..1 to 1.5. The discovery and validation of new genetic risk factors in independent populations may help toward the understanding of MS pathogenesis by providing valuable information on biological pathways to be investigated...

..We could not observe a stress effect on ghrelin, which does not support a role for ghrelin in stress-induced anorexia...

..9 +/- 17.1) compared with the controls (12.0 +/- 9.2; p < 0.05). It is suggested that a possible dysfunction of the dopaminergic system in RLS does not affect the release of prolactin and hGH from the pituitary gland...

..The organ/plasma quotients showed no significant group effects. We concluded that P-gp does not influence the penetration of testosterone and estradiol to a biologically significant extent...

..Central side effects may depend on a substance's ability to pass the blood-brain barrier, which can be actively controlled by transporter molecules such as the P-glycoprotein (P-gp) encoded by the ABCB1 gene...

..Furthermore, ghrelin appears to be a common stimulus of the somatotropic and hypothalamo-pituitary-adrenocortical systems. It appears that ghrelin is a sleep-promoting factor in humans...

..These results indicate that some antidepressant drugs may cause both oxidative stress and changes in cellular antioxidative capacity, resulting in altered NF-kappaB activity and, ultimately, cell death...

..This might imply some short-term positive alcohol effect in sons of alcoholics, but also constitute a mechanism by which their risk to develop alcohol use disorders is increased...

..The significance of these alterations for the core symptomatology of narcolepsy should be a target of future research...

..In both sexes, ghrelin caused comparable increases and secretion patterns of GH and cortisol. In conclusion, ghrelin affects sleep in elderly men but not women resembling findings in young subjects...

..Potential usage of NO modulating agents as new treatment options for RLS have become a challenging aspect for future research of this disorder...

..In contrast to findings in young men, ghrelin did not affect sleep in young women, indicating a sexual dimorphism. In accordance with the findings in young men, ghrelin stimulated secretion of GH and cortisol...

..This reaction pattern suggests that subjects carrying these variants are at risk of displaying chronically elevated cortisol levels after repeated stress constituting a risk factor for stress-related diseases...

..Ghrelin decreases the secretion of LH probably by suppressing the release of hypothalamic GnRH. So far however, there is no evidence that ghrelin affects also the secretion of FSH in humans, the other gonadotrophin regulated by GnRH...

..The reported associations in independent samples of AD and MDD support an estrogen-dependent function of GAL in pathophysiology of anxiety and depression, affecting response to antidepressant treatment...

..Especially in suicide victims, lower postmortem brain messenger RNA and protein levels of neurotrophins and their receptors have been reported...

..In addition, ghrelin levels in depressed patients decrease with psychopathological improvement. Therefore, we hypothesized that ghrelin levels in patients with major depression would be higher than in healthy subjects...

..These results suggest that the ACE gene is involved in the development of coping strategies...

..Our results confirm that dex/CRH tests can be used as predictors of clinical course also under mirtazapine treatment...

..CRH had sleep-improving and REM permissive effects when co-administered with ghrelin, being in contrast to the effect of CRH alone in previous studies...

..Furthermore, GAL is involved in hypothalamic-hypophysiotropic signalling and cosecreted with luteinizing hormone-releasing hormone (LHRH), possibly acting as a mediator of estrogen action...

..Suicide attempters did not differ from nonattempters. In depressed patients, plasma AVP correlated positively with cortisol. There was no relationship between CSF AVP and monoamine metabolites in CSF...

..No peak in plasma ghrelin levels resembling the GH surge was observed. We suggest that under naturalistic conditions plasma ghrelin levels show no distinct interaction with sleep...

..This novel mechanism of action of paroxetine on vasopressin gene regulation renders vasopressinergic neuronal circuits a promising target for the development of more causal antidepressant treatment strategies...

..Finally, we discuss genetic polymorphisms of the genes encoding for P-gp and their effects on drug response...

..The identification and detailed characterization of these molecular pathways will ultimately lead to the development of novel neuropharmacological intervention strategies...

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..In the present study, we examined whether change in HPA system function during the first weeks of hospitalization predicts response to antidepressant treatment in major depression and thus constitutes a potential biomarker...

..This region contains two candidate genes for purinergic ligand-gated ion channels, P2RX7 and P2RX4, and one gene coding for calmodulin-dependent protein kinase kinase b (CaMKKb)...

..Collectively, the data indicate the usefulness of vitamin E as an adjunct to haloperidol treatment and provide initial clues about the underlying molecular mechanisms involved in these effects...

..NBI-34041 demonstrates that inhibition of the CRF system is a promising target for drug development against depression and anxiety disorders...

..No effects of R121919 on clinical laboratory parameters including liver enzymes, EEG and ECG were observed. These results encourage the development of other CRH-1-R antagonists as a novel class of antidepressive drugs...

..Ghrelin affects the hypothalamic-pituitary-gonadal axis in various nonhuman mammalians, predominantly by suppressing secretion of LH. However, for humans, no such evidence exists...

..Finally, more severe vegetative symptoms are associated with an enhanced HPA-axis activity...

..The similarities of the effect of Mg(2+) and that of the related electrolyte Li+ furthermore supports the possible efficacy of Mg(2+) as a mood stabilizer...

..This may have implications on the tolerability and effectiveness of IFN-beta therapy...

..Proinflammatory cytokines, known to be elevated in patients with MS, may cause both HPA axis alterations and fatigue...

..Our data suggest that i.v. ghrelin stimulates appetite and images of food in young women and men. Obviously, leptin is not involved in these effects...

..g. by increasing energy expenditure. We therefore hypothesized that ghrelin suppresses the HPT axis in humans, counteracting its energy-saving effect...

..Together with previous findings indicating safety, tolerability, and clinical efficacy CRH1R antagonists are highly promising as a new treatment option in depression...

..No SNPs outside the HLA region reached a genome wide level of significance. Nevertheless, we found suggestive evidence for an association of MS with variants in two new genes, the VAV2 gene and the gene for ZNF433...

..2. Proteomic analysis of the CSF is a promising non hypothesis-driven screening method for the detection of new candidate genes in neurobiological suicide research...

..However, plasma orexin A levels did not differ from those observed in controls. These results suggest that orexin deficiency in patients with narcolepsy is a phenomena restricted to the CNS...

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..In conclusion, VPA and AMI globally exerted chromatin-modulating activities using different mechanisms that divergently precipitated at an astroglial gene locus...

..7+/-4.6 nmol/l), but not in the young subgroup (pre: 15.6+/-11.3; post: 27.7+/-9.4 nmol/l). We thus conclude that the treatment of healthy controls with steroid-synthesis inhibitors does not lead to a major increase in CRH secretion...

..Results of this study should be confirmed in a larger study group...

..This is in contrast to the established decline of HPA system activity during treatment with tricyclic antidepressants...

..Glucocorticoids themselves are reported to increase leptin synthesis and secretion in humans...

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..EPA may, furthermore, enhance the action of antidepressants, like many SSRIs that are p-gp substrates, which are actively transported out of the intracerebral space at the level of the blood-brain barrier...

..This effect might be explained by the serotonergic effects of lithium...

..In conclusion, enrichment of antidepressants and antipsychotics in raft-like domains within the cell membrane appears to be crucial for their antagonistic effects at ligand-gated ion channels such as 5-HT3 receptors...