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https://www.readbyqxmd.com/read/28319850/methylation-of-hpa-axis-related-genes-in-men-with-hypersexual-disorder
#1
Jussi Jokinen, Adrian E Boström, Andreas Chatzittofis, Diana M Ciuculete, Katarina Görts Öberg, John N Flanagan, Stefan Arver, Helgi B Schiöth
Hypersexual Disorder (HD) defined as non-paraphilic sexual desire disorder with components of compulsivity, impulsivity and behavioral addiction, and proposed as a diagnosis in the DSM 5, shares some overlapping features with substance use disorder including common neurotransmitter systems and dysregulated hypothalamic-pituitary-adrenal (HPA) axis function. In this study, comprising 67 HD male patients and 39 male healthy volunteers, we aimed to identify HPA-axis coupled CpG-sites, in which modifications of the epigenetic profile are associated with hypersexuality...
March 10, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28300138/reduced-dna-methylation-and-psychopathology-following-endogenous-hypercortisolism-a-genome-wide-study
#2
Camilla A M Glad, Johanna C Andersson-Assarsson, Peter Berglund, Ragnhildur Bergthorsdottir, Oskar Ragnarsson, Gudmundur Johannsson
Patients with Cushing's Syndrome (CS) in remission were used as a model to test the hypothesis that long-standing excessive cortisol exposure induces changes in DNA methylation that are associated with persisting neuropsychological consequences. Genome-wide DNA methylation was assessed in 48 women with CS in long-term remission (cases) and 16 controls matched for age, gender and education. The Fatigue impact scale and the comprehensive psychopathological rating scale were used to evaluate fatigue, depression and anxiety...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28298552/dynamic-expression-of-fkbp5-in-the-medial-prefrontal-cortex-regulates-resiliency-to-conditioned-fear
#3
Marangelie Criado-Marrero, Roberto J Morales Silva, Bethzaly Velazquez, Anixa Hernández, María Colon, Emmanuel Cruz, Omar Soler-Cedeño, James T Porter
The factors influencing resiliency to the development of post-traumatic stress disorder (PTSD) remain to be elucidated. Clinical studies associate PTSD with polymorphisms of the FK506 binding protein 5 (FKBP5). However, it is unclear whether changes in FKBP5 expression alone could produce resiliency or susceptibility to PTSD-like symptoms. In this study, we used rats as an animal model to examine whether FKBP5 in the infralimbic (IL) or prelimbic (PL) medial prefrontal cortex regulates fear conditioning or extinction...
April 2017: Learning & Memory
https://www.readbyqxmd.com/read/28262266/ptsd-in-court-ii-risk-factors-endophenotypes-and-biological-underpinnings-in-ptsd
#4
REVIEW
Gerald Young
The second article in the series of three for the journal on "PTSD in Court" especially concerns the biological bases that have been found to be associated with PTSD (posttraumatic stress disorder). The cohering concepts in this section relate to risk factors; candidate genes; polygenetics; "gene×environment" interactions; epigenetics; endophenotypes; biomarkers; and connective networks both structurally and functionally (in terms of intrinsic connectivity networks, ICNs, including the DMN, SN, and CEN; that is, default mode, salience, and central executive networks, respectively)...
March 2, 2017: International Journal of Law and Psychiatry
https://www.readbyqxmd.com/read/28254433/loss-of-fkbp5-impedes-adipocyte-differentiation-under-both-normoxia-and-hypoxic-stress
#5
Lingling Zhang, Bin Qiu, Tingting Wang, Jun Wang, Ming Liu, Yuxue Xu, Chao Wang, Ran Deng, Kent Williams, Zhiwei Yang, Tiebing Liang, Weidong Yong
FK506-binding protein 51 (FKBP51) is one of the most important regulators in the GR-mediated stress response, and we previously demonstrated that loss of FKBP5 arrests adipogenesis and renders mice resistant to diet-induced obesity (DIO). However, the exact role of FKBP5 in the process of adipocyte differentiation under hypoxic conditions (the common microenvironment where adipocytes reside in obese individuals) is still unclear. Here, by isolating and culturing WT- and Fkbp5-knockout mouse embryonic fibroblasts (MEFs), and treat them at normal oxygen environment (21% O2, nomorxia) or low oxygen environment (5% O2, hypoxia)...
April 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28247564/fkbp5-genotype-and-early-life-stress-exposure-predict-neurobehavioral-outcomes-for-preterm-infants
#6
Amy L D'Agata, Stephen Walsh, Dorothy Vittner, Xiaomei Cong, Jacqueline M McGrath, Erin E Young
PROBLEM: This study evaluated the relationship between stressful early life neonatal intensive care unit (NICU) experiences, genetic variation of a stress response-associated gene (FKBP5), and neurobehavioral outcomes. METHOD: The impact of genetic variation and stress experience on neurobehavioral outcomes was examined for 41 preterm infants. Statistical analyses explored the main effects of FKBP5 genotype and NICU stress experience, as well as their interaction on infant neurobehavioral development prior to discharge...
March 1, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28246044/dna-methylation-and-expression-of-stress-related-genes-in-pbmc-of-mdd-patients-with-and-without-serious-suicidal-ideation
#7
Bhaskar Roy, Richard C Shelton, Yogesh Dwivedi
Stress plays an important role in major depressive disorder (MDD) and is one of the state dependent factors in suicidal behavior. A dysfunctional hypothalamic-pituitary-adrenal axis is a common feature in this disorder. The involvement of environmental factors has added additional complexity to understanding depression or suicidal behavior. In this regard, epigenetic regulation has been considered a mechanistic interface between environmental stress stimuli and altered functioning of underlying gene network that may increase susceptibility to depression or suicidal behavior...
February 16, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28242321/functional-analysis-reveals-no-transcriptional-role-for-the-glucocorticoid-receptor-%C3%AE-isoform-in-zebrafish
#8
Antonia Chatzopoulou, Peter J Schoonheim, Vincenzo Torraca, Annemarie H Meijer, Herman P Spaink, Marcel J M Schaaf
In humans, two splice variants of the glucocorticoid receptor (GR) exist: the canonical α-isoform, and the β-isoform, which has been shown to have a dominant-negative effect on hGRα. Previously, we have established the occurrence of a GR β-isoform in zebrafish, and in the present study we have investigated the functional role of the zebrafish GRβ (zGRβ). Reporter assays in COS-1 cells demonstrated a dominant-negative effect of zGRβ but no such effect was observed in zebrafish PAC2 cells using induction of the fk506 binding protein 5 (fkbp5) gene as readout...
February 24, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28198448/influence-of-fkbp5-polymorphism-and-dna-methylation-on-structural-changes-of-the-brain-in-major-depressive-disorder
#9
Kyu-Man Han, Eunsoo Won, Youngbo Sim, June Kang, Changsu Han, Yong-Ku Kim, Seung-Hyun Kim, Sook-Haeng Joe, Min-Soo Lee, Woo-Suk Tae, Byung-Joo Ham
A single nucleotide polymorphism of rs1360780 in the FKBP5 gene is associated with a predisposition to developing major depressive disorder (MDD). We investigated the interactive effects of FKBP5 rs1360780 allelic variants, DNA methylation, and the diagnosis of MDD on structural changes of the entire brain. One hundred and fourteen patients with MDD and eighty-eight healthy controls underwent T1-weighted structural magnetic resonance imaging and FKBP5 rs1360780 genotyping, including DNA methylation of intron 7...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28135675/blunted-hpa-axis-activity-prior-to-suicide-attempt-and-increased-inflammation-in-attempters
#10
Nadine M Melhem, Sara Munroe, Anna Marsland, Katarina Gray, David Brent, Giovanna Porta, Antoine Douaihy, Mark L Laudenslager, Frank DePietro, Rasim Diler, Henry Driscoll, Priya Gopalan
BACKGROUND: Hypothalamic-Pituitary-Adrenal (HPA) axis dysregulation is associated with increased risk for suicidal behavior. However, it is not clear whether such dysregulation exists prior to or is a consequence of attempt. Studies also show an activation of inflammatory responses in suicidal behavior but often combine attempters with those with ideation. METHODS: The sample consisted of psychiatric inpatients, aged 15-30 years, admitted for suicide attempt (SA, n=38), inpatients admitted for suicidal ideation with no prior history of attempts (SI, n=40), and healthy controls (n=37)...
March 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28094813/a-methylome-wide-mqtl-analysis-reveals-associations-of-methylation-sites-with-gad1-and-hdac3-snps-and-a-general-psychiatric-risk-score
#11
D M Ciuculete, A E Boström, S Voisin, H Philipps, O E Titova, M Bandstein, L Nikontovic, M J Williams, J Mwinyi, H B Schiöth
Genome-wide association studies have identified a number of single-nucleotide polymorphisms (SNPs) that are associated with psychiatric diseases. Increasing body of evidence suggests a complex connection of SNPs and the transcriptional and epigenetic regulation of gene expression, which is poorly understood. In the current study, we investigated the interplay between genetic risk variants, shifts in methylation and mRNA levels in whole blood from 223 adolescents distinguished by a risk for developing psychiatric disorders...
January 17, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28045928/altered-epithelial-gene-expression-in-peripheral-airways-of-severe-asthma
#12
Akul Singhania, Hitasha Rupani, Nivenka Jayasekera, Simon Lumb, Paul Hales, Neil Gozzard, Donna E Davies, Christopher H Woelk, Peter H Howarth
Management of severe asthma remains a challenge despite treatment with glucocorticosteroid therapy. The majority of studies investigating disease mechanisms in treatment-resistant severe asthma have previously focused on the large central airways, with very few utilizing transcriptomic approaches. The small peripheral airways, which comprise the majority of the airway surface area, remain an unexplored area in severe asthma and were targeted for global epithelial gene expression profiling in this study. Differences between central and peripheral airways were evaluated using transcriptomic analysis (Affymetrix HG U133 plus 2...
2017: PloS One
https://www.readbyqxmd.com/read/28030643/targeted-sequencing-of-fkbp5-in-suicide-attempters-with-bipolar-disorder
#13
Marie E Breen, Sophia C Gaynor, Eric T Monson, Kelly de Klerk, Meredith G Parsons, Terry A Braun, Adam P DeLuca, Peter P Zandi, James B Potash, Virginia L Willour
FKBP5 is a critical component of the Hypothalamic-Pituitary-Adrenal (HPA) axis, a system which regulates our response to stress. It forms part of a complex of chaperones, which inhibits binding of cortisol and glucocorticoid receptor translocation to the nucleus. Variations in both the HPA axis and FKBP5 have been associated with suicidal behavior. We developed a systematic, targeted sequencing approach to investigate coding and regulatory regions in or near FKBP5 in 476 bipolar disorder suicide attempters and 473 bipolar disorder non-attempters...
2016: PloS One
https://www.readbyqxmd.com/read/28025095/a-cross-species-study-of-heterogeneity-in-fear-extinction-learning-in-relation-to-fkbp5-variation-and-expression-implications-for-the-acute-treatment-of-posttraumatic-stress-disorder
#14
Isaac R Galatzer-Levy, Raül Andero, Takehito Sawamura, Tanja Jovanovic, Santiago Papini, Kerry J Ressler, Seth Davin Norrholm
Deficits in fear extinction learning are hypothesized to underlie the development of posttraumatic stress disorder (PTSD). Such deficits may, in part, be due to genetic and epigenetic variation in the stress related gene FKBP5. Conversely, altering FKBP5 epigenetic responses during memory consolidation may rescue extinction deficits making it a target for acute intervention to prevent the development of PTSD. Study 1 (Humans) examines if FKBP5 single nucleotide polymorphisms (SNPs) and PTSD symptom domains (re-experiencing, avoidance/numbing, hyperarousal) are associated with abnormal fear extinction phenotypes identified using latent growth mixture modeling (LGMM)...
December 23, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/28018293/dynamic-changes-in-dna-methylation-occur-during-the-first-year-of-life-in-preterm-infants
#15
Chinthika Piyasena, Jessy Cartier, Nadine Provençal, Tobias Wiechmann, Batbayar Khulan, Raju Sunderasan, Gopi Menon, Jonathan R Seckl, Rebecca M Reynolds, Elisabeth B Binder, Amanda J Drake
BACKGROUND: Preterm birth associates with a substantially increased risk of later cardiovascular disease and neurodevelopmental disorders. Understanding underlying mechanisms will facilitate the development of screening and intervention strategies to reduce disease risk. Changes in DNA methylation have been proposed as one mechanism linking the early environment with later disease risk. We tested the hypothesis that preterm birth associates with altered DNA methylation in genes encoding insulin-like growth factor 2 (IGF2) and FK506-binding protein 5 (FKBP5), which appear particularly vulnerable to early life adversity...
2016: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28007534/fkbp5-polymorphism-is-associated-with-insulin-resistance-in-children-and-adolescents-with-obesity
#16
Marta Fichna, Izabela Krzyśko-Pieczka, Magdalena Żurawek, Bogda Skowrońska, Danuta Januszkiewicz-Lewandowska, Piotr Fichna
OBJECTIVE: Since metabolic syndrome shares several clinical features with hypercortisolism, it was hypothesised that genes altering individual glucocorticoid (GC) sensitivity might be implicated in pathogenesis of obesity and its adverse outcomes. FKBP5 gene encodes a chaperon protein in the GC receptor (GR) complex, which modulates steroid action upon target genes. Its functional variant, rs1360780, may enhance FKBP5 gene transcription, affect GR signalling and thereby influence the hypothalamo-pituitary-adrenal axis...
December 19, 2016: Obesity Research & Clinical Practice
https://www.readbyqxmd.com/read/28002634/fkbp5-polymorphisms-influence-pre-learning-stress-induced-alterations-of-learning-and-memory
#17
Phillip R Zoladz, Alison M Dailey, Hannah E Nagle, Miranda K Fiely, Brianne E Mosley, Callie M Brown, Tessa J Duffy, Amanda R Scharf, McKenna B Earley, Boyd R Rorabaugh
FK506 binding protein 51 (FKBP5) is a co-chaperone of heat shock protein 90 and significantly influences glucocorticoid receptor sensitivity. Single nucleotide polymorphisms (SNPs) in the FKBP5 gene are associated with altered hypothalamus-pituitary-adrenal (HPA) axis function, changes in the structure and function of several cognitive brain areas, and increased susceptibility to post-traumatic stress disorder, major depression, bipolar disorder and suicidal events. The mechanisms underlying these associations are largely unknown, but it has been speculated that the influence of these SNPs on emotional memory systems may play a role...
March 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27968728/evidence-mounting-for-gene-by-environment-interactions-at-the-fkbp5-locus-predicting-psychiatric-symptoms
#18
Thorhildur Halldorsdottir
No abstract text is available yet for this article.
December 1, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/27941579/early-life-stress-fkbp5-polymorphisms-and-quantitative-glycemic-traits
#19
Anna Suarez, Jari Lahti, Eero Kajantie, Johan G Eriksson, Katri Räikkönen
OBJECTIVE: Early life stress (ELS) has been shown to influence health later in life. Functioning of the hypothalamic-pituitary-adrenal (HPA) axis, regulated partly by FKBP5 gene, may moderate these effects. We examined whether FKBP5 single nucleotide polymorphisms (SNPs) interact with ELS on type 2 diabetes, cardiovascular disease, and quantitative glycemic traits. METHODS: 1,728 Helsinki Birth Cohort Study participants born 1934-44 were genotyped for FKBP5 SNPs (rs1360780, rs9394309, rs9470080), administered a 2-h (75 g) oral glucose tolerance test and a questionnaire on physician-diagnosed and medication use for chronic diseases at a mean age of 61...
December 9, 2016: Psychosomatic Medicine
https://www.readbyqxmd.com/read/27923569/gender-differences-of-b-cell-signature-related-to-estrogen-induced-ifi44l-baff-in-systemic-lupus-erythematosus
#20
Hongye Fan, Guangfeng Zhao, Deshan Ren, Fei Liu, Guanjun Dong, Yayi Hou
Systemic lupus erythematosus (SLE) possesses a gender-dependent incidence characterized by a male/female ratio 1:9. B-cell, a vital part of the immune system, plays an important role in pathogenesis of SLE. Thus, we hypothesize that gender differences of B cells may exist in SLE and relate to the onset and the progression of SLE. Here, we showed that the genes expression pattern is similar between healthy female and male. However, SLE female and SLE male showed more upregulated genes, in which the trendline of SLE male is higher than that of SLE female...
December 5, 2016: Immunology Letters
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