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https://www.readbyqxmd.com/read/28823105/understanding-peripartum-depression-through-neuroimaging-a-review-of-structural-and-functional-connectivity-and-molecular-imaging-research
#1
REVIEW
Christy Duan, Jessica Cosgrove, Kristina M Deligiannidis
PURPOSE OF REVIEW: Imaging research has sought to uncover brain structure, function, and metabolism in women with postpartum depression (PPD) as little is known about its underlying pathophysiology. This review discusses the imaging modalities used to date to evaluate postpartum depression and highlights recent findings. RECENT FINDINGS: Altered functional connectivity and activity changes in brain areas implicated in executive functioning and emotion and reward processing have been identified in PPD...
August 19, 2017: Current Psychiatry Reports
https://www.readbyqxmd.com/read/28822853/intrauterine-and-lactation-exposure-to-fluoxetine-blunted-in-the-offspring-the-aortic-adaptive-response-induced-by-acute-restraint-stress
#2
Bruno V D Marques, Carolina M Higashi, Daniella R B da S Novi, Nagela G Zanluqui, Thais F Gregório, Phileno Pinge-Filho, Daniela C C Gerardin, Gislaine P Gomes, Estefânia G Moreira, Graziela S Ceravolo
Selective serotonin reuptake inhibitors are the most widely prescribed antidepressants to women during pregnancy. Maternal treatment with fluoxetine can expose fetuses and neonates to higher levels of serotonin that plays a role in stress response. Thus, the aim of the study was to evaluate whether maternal treatment with fluoxetine interferes with aorta reactivity of adult male offspring after acute restraint stress. Wistar rats were gavaged with fluoxetine (5mg/kg/day) or water (control) during pregnancy and lactation...
August 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28821888/risk-factors-for-epistaxis-in-patients-followed-in-general-practices-in-germany
#3
D U Seidel, L Jacob, K Kostev, A M Sesterhenn
<p>BACKGROUND: The goal of the present study was to analyze the risk factors for epistaxis in patients followed in general practices in Germany.</p> <p>METHODS: The current study sample included patients aged 18 years or older who received a first epistaxis diagnosis between January 2012 and December 2016 (index date). Epistaxis patients and controls without epistaxis were matched (1:1) on the basis of age, gender, insurance status and physician. </p> <p>RESULTS: A total of 16,801 patients with epistaxis and 16,801 control subjects were included in this study...
August 19, 2017: Rhinology
https://www.readbyqxmd.com/read/28821809/impact-of-varying-social-experiences-during-life-history-on-behaviour-gene-expression-and-vasopressin-receptor-gene-methylation-in-mice
#4
Carina Bodden, Daniel van den Hove, Klaus-Peter Lesch, Norbert Sachser
Both negative and positive social experiences during sensitive life phases profoundly shape brain and behaviour. Current research is therefore increasingly focusing on mechanisms mediating the interaction between varying life experiences and the epigenome. Here, male mice grew up under either adverse or beneficial conditions until adulthood, when they were subdivided into groups exposed to situations that either matched or mismatched previous conditions. It was investigated whether the resulting four life histories were associated with changes in anxiety-like behaviour, gene expression of selected genes involved in anxiety and stress circuits, and arginine vasopressin receptor 1a (Avpr1a) gene methylation...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821725/interplay-between-maternal-slc6a4-mutation-and-prenatal-stress-a-possible-mechanism-for-autistic-behavior-development
#5
Calvin P Sjaarda, Patrick Hecht, Amy J M McNaughton, Audrina Zhou, Melissa L Hudson, Matt J Will, Garth Smith, Muhammad Ayub, Ping Liang, Nansheng Chen, David Beversdorf, Xudong Liu
The low activity allele of the maternal polymorphism, 5HTTLPR, in the serotonin transporter, SLC6A4, coupled with prenatal stress is reported to increase the risk for children to develop autism spectrum disorder (ASD). Similarly, maternal Slc6a4 knock-out and prenatal stress in rodents results in offspring demonstrating ASD-like characteristics. The present study uses an integrative genomics approach to explore mechanistic changes in early brain development in mouse embryos exposed to this maternal gene-environment phenomenon...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821671/learning-and-stress-shape-the-reward-response-patterns-of-serotonin-neurons
#6
Zhong Weixin, Yi Li, Qiru Feng, Minmin Luo
The ability to predict reward promotes animal survival. Both dopamine neurons in the ventral tegmental area (VTA) and serotonin neurons in the dorsal raphe nucleus (DRN) participate in reward processing. Although the learning effects on dopamine neurons have been extensively characterized, it remains largely unknown how the response of serotonin neurons evolves during learning. Moreover, while stress is known to strongly influence reward-related behavior, we know very little about how stress modulates neuronal reward responses...
August 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28821466/endocrine-disrupting-effects-of-waterborne-fluoxetine-exposure-on-the-reproductive-axis-of-female-goldfish-carassius-auratus
#7
Jan A Mennigen, Jacob M Zamora, John P Chang, Vance L Trudeau
Evidence suggests that pharmaceuticals and personal care products reach urban watersheds, bioconcentrate in fish, and potentially disrupt physiological homeostasis. These impairments often affect hormone functions. Selective serotonin reuptake inhibitors (SRRIs) are increasingly studied with regards to their endocrine disrupting effects on teleost physiological processes, including reproduction. To examine whether FLX effects on the endocrine regulation of reproductive physiology in goldfish are sex-specific, we exposed sexually recrudescent female goldfish to two waterborne concentrations of FLX (0...
August 15, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28821451/5-ht7-receptor-antagonism-sb-269970-attenuates-bleomycin-induced-pulmonary-fibrosis-in-rats-via-downregulating-oxidative-burden-and-inflammatory-cascades-and-ameliorating-collagen-deposition-comparison-to-terguride
#8
Mona K Tawfik, Samy Makary
The neurotransmitter 5-hydroxytryptamine (5-HT) is involved in regulation of local tissue inflammation and repair through a set of receptors (5-HT1-7 receptors), which are expressed in the lung. Considering the protective importance of 5-HT receptor antagonists against development of pulmonary fibrosis, we evaluated whether 5-HT7 receptor antagonist (SB-269970) modulates lung inflammatory and fibrogenic processes in comparison with 5-HT2A/B receptor antagonist (terguride), in bleomycin (BLM)-induced idiopathic pulmonary fibrosis (IPF) model...
August 15, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28821448/cognitive-impairment-and-gene-expression-alterations-in-a-rodent-model-of-binge-eating-disorder
#9
A Chawla, Z A Cordner, G Boersma, T H Moran
Binge eating disorder (BED) is defined as recurrent, distressing over-consumption of palatable food (PF) in a short time period. Clinical studies suggest that individuals with BED may have impairments in cognitive processes, executive functioning, impulse control, and decision-making, which may play a role in sustaining binge eating behavior. These clinical reports, however, are limited and often conflicting. In this study, we used a limited access rat model of binge-like behavior in order to further explore the effects of binge eating on cognition...
August 15, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28820985/human-bone-marrow-as-a-tissue-in-post-mortem-identification-and-determination-of-psychoactive-substances-screening-methodology
#10
Renata Wietecha-Posłuszny, Sofia Lendor, Magdalena Garnysz, Marcin Zawadzki, Paweł Kościelniak
The aim of this study was to apply a new instrumental approach to the analysis of human bone marrow for forensic purposes. A new screening method for the detection of more than 30 psychoactive drugs in bone marrow was developed and applied to case samples. The drugs used in this study belonged to the following groups: benzodiazepines (BZDs, n=16), tricyclic antidepressants (TCAs, n=5), selective serotonin reuptake inhibitors (SSRI, n=4), serotonin-norepinephrine reuptake inhibitors (n=1), anticonvulsants (n=1), imidazopyridines (n=1) and piperazines (n=3)...
August 7, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28820054/qsar-modeling-of-histamine-h3r-antagonists-inverse-agonists-as-future-drugs-for-neurodegenerative-diseases
#11
Michelle Fidelis Corrêa, João Paulo Dos Santos Fernandes
Histamine H3 receptor (H3R) is associated with several neuropsychological diseases. It is predominantly expressed in the central nervous system as presynaptic receptor, especially in regions associated with cognition and behavior, and is responsible for modulate the synthesis and release of histamine and other neurotransmitters such as acetylcholine, dopamine and serotonin. Therefore, H3R is an important target involved in several CNS disorders, such as narcolepsy, attention deficit hyperactivity disorder and schizophrenia...
August 17, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28819877/engineering-of-escherichia-coli-for-the-synthesis-of-n-hydroxycinnamoyl-tryptamine-and-serotonin
#12
Su Jin Lee, Geun-Young Sim, Youngshim Lee, Bong-Gyu Kim, Joong-Hoon Ahn
Plants synthesize various phenol amides. Among them, hydroxycinnamoyl (HC) tryptamines and serotonins exhibit antioxidant, anti-inflammatory, and anti-atherogenic activities. We synthesized HC-tryptamines and HC-serotonin from several HCs and either tryptamine or serotonin using Escherichia coli harboring the 4CL (4-coumaroyl CoA ligase) and CaHCTT [hydroxycinnamoyl-coenzyme A:serotonin N-(hydroxycinnamoyl)transferase] genes. E. coli was engineered to synthesize N-cinnamoyl tryptamine from glucose. TDC (tryptophan decarboxylase) and PAL (phenylalanine ammonia lyase) along with 4CL and CaHCTT were introduced into E...
August 17, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28819255/mouse-strain-differences-in-ssri-sensitivity-correlate-with-serotonin-transporter-binding-and-function
#13
Zeng-Liang Jin, Xiao-Fei Chen, Yu-Hua Ran, Xiao-Rong Li, Jie Xiong, Yuan-Yuan Zheng, Na-Na Gao, Yun-Feng Li
Selective serotonin reuptake inhibitors (SSRIs) bind 5-HT transporters, leading to the accumulation of 5-HT and amelioration of depression. Although different mouse strains show varying sensitivity to SSRIs in mouse models of depression, the underlying mechanism of these strain differences remains unclear. Here, the SSRI citalopram dose-dependently reduced immobility time in both the FST and TST in DBA/2J mice but not C57BL/6J mice, whereas fluoxetine showed the opposite results. Paroxetine similarly reduced immobility time in both strains...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818747/antidepressant-like-activity-of-methyl-jasmonate-involves-modulation-of-monoaminergic-pathways-in-mice
#14
Solomon Umukoro, Adaeze Adebesin, Gladys Agu, Osarume Omorogbe, Stephen Babajide Asehinde
PURPOSE: The efficacy of current antidepressant drugs has been compromised by adverse effects, low remission and delay onset of action necessitating the search for alternative agents. Methyl jasmonate (MJ), a bioactive compound isolated from Jasminum grandiflorum has been shown to demonstrate antidepressant activity but its mechanism of action remains unknown. Thus, the role of monoaminergic systems in the antidepression-like activity of MJ was investigated in this study. MATERIALS AND METHODS: Mice were given i...
August 14, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28818718/template-selection-and-refinement-considerations-for-modelling-aminergic-gpcr-ligand-complexes
#15
Kaniz F Urmi, Angela M Finch, Renate Griffith
G protein-coupled receptors (GPCRs) are important targets for development of drugs for the treatment of many diseases. However, crystal structures are available for only a small fraction of these membrane bound proteins. Accurate homology models will provide opportunities for effective drug design targeting GPCRs. Recently, several serotonin receptor crystal structures were solved and needed to be evaluated as potential templates. In the first part of this work different measures of similarity in template selection were explored and methods for homology modelling, docking and refinement of aminergic GPCR-ligand complexes were developed and evaluated by comparing models of the D3-R/eticlopride complex with the crystal structure...
July 31, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28818561/the-rise-and-fall-of-impulse-control-behavior-disorders
#16
Giovanni Cossu, Roberta Rinaldi, Carlo Colosimo
INTRODUCTION: Impulse control disorders (ICDs) are psychiatric disorders characterized by the failure to resist an impulse or by the temptation to perform an act that is harmful to oneself or to others. METHODS: ICDs, including pathological gambling, hypersexuality, compulsive eating and shopping, can occur as a complication of Parkinson's disease (PD) together with other behavioral disorders, including dopamine dysregulation syndrome. This review is based on a literature search updated to May 2017, focusing on the epidemiology, clinical features, and therapeutic options of ICDs associated with PD...
August 1, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28818525/whole-transcriptome-microarray-analysis-reveals-regulation-of-rab4-by-rbm5-in-neurons
#17
Travis C Jackson, Shawn E Kotermanski, Patrick M Kochanek
RNA binding motif 5 (RBM5) is a nuclear protein that modulates gene transcription and mRNA splicing in cancer cells. The brain is among the highest RBM5 expressing organ in the body but its mRNA target(s) or functions in the CNS have not been elucidated. Here we knocked down (KO) RBM5 in primary rat cortical neurons and analyzed total RNA extracts by gene microarray vs. neurons transduced with lentivirus to deliver control (non-targeting) shRNA. The mRNA levels of Sec23A (involved in ER-Golgi transport) and the small GTPase Rab4a (involved in endocytosis/protein trafficking) were increased in RBM5 KO neurons relative to controls...
August 14, 2017: Neuroscience
https://www.readbyqxmd.com/read/28816927/use-of-selective-serotonin-reuptake-inhibitors-and-bone-mineral-density-change-a-population-based-longitudinal-study-in-middle-aged-and-elderly-individuals
#18
Annelies C Ham, Nikkie Aarts, Raymond Noordam, Fernando Rivadeneira, Gijsbertus Ziere, M Carola Zillikens, Henning Tiemeier, Nathalie van der Velde, Albert Hofman, André G Uitterlinden, Loes E Visser, Bruno H Stricker
BACKGROUND: Longitudinal studies showed conflicting results regarding the association between use of selective serotonin reuptake inhibitors (SSRIs) and bone mineral density (BMD). Therefore, we investigate the association between-duration of-SSRI use and BMD, and change in BMD ([INCREMENT]BMD). METHODS: Data from the population-based Rotterdam Study cohort (1991-2008) were used. In total, 4915 men and 5831 postmenopausal women, aged 45 years and older, were included, having measurement visits at 4- to 5-year intervals...
August 14, 2017: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28816830/fatal-cerebral-edema-seizures-and-hyponatremia-after-trazodone-overdose
#19
Jose David Avila
Trazodone is a serotonin antagonist and reuptake inhibitor that is widely used for the treatment of depression and insomnia. Fatal overdose is rare and usually occurs when combined with other drugs or alcohol. Only a few lethal cases of pure trazodone overdose have been reported, all attributed to cardiotoxicity. We reported a 37-year-old woman who presented after ingesting 6.45 g of trazodone in a suicidal attempt. She was hyponatremic because of the syndrome of inappropriate antidiuretic hormone secretion and, shortly after, had a seizure and developed fatal cerebral edema...
August 14, 2017: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/28816725/effect-of-citalopram-for-the-treatment-of-neurocardiogenic-syncope
#20
Amer N Kadri, Leen Nusairat, Samah Kadri, Ammar Alqaid, Adrian V Hernandez, Nazih N Kadri
BACKGROUND: Neurocardiogenic syncope (NCS) is a common form of syncope. Although selective serotonin reuptake inhibitors and other medications have been used to treat NCS with variable success, there is no consensus regarding a first-line therapy. STUDY QUESTION: To assess the effects of citalopram in NCS and to examine the effect of diagnostic use of the head-up tilt table (HUTT) versus empirical diagnosis on patient outcome. STUDY DESIGN: A retrospective case series of 1000 consecutive patients who were diagnosed with NCS and treated with citalopram...
August 16, 2017: American Journal of Therapeutics
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