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Anhedonia

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https://www.readbyqxmd.com/read/29152735/6%C3%A2-hz-corneal-kindling-in-mice-triggers-neurobehavioral-comorbidities-accompanied-by-relevant-changes-in-c-fos-immunoreactivity-throughout-the-brain
#1
Giulia Albertini, Laura Walrave, Thomas Demuyser, Ann Massie, Dimitri De Bundel, Ilse Smolders
OBJECTIVE: Besides seizures, patients with epilepsy are affected by a variety of cognitive and psychiatric comorbidities that further impair their quality of life. The present study provides an in-depth characterization of the behavioral alterations induced by 6 Hz corneal kindling. Furthermore, we correlate these behavioral changes to alterations in c-Fos protein expression throughout the brain following kindling. METHODS: Adolescent male Naval Medical Research Institute (NMRI) mice were kindled via repetitive subconvulsive 6 Hz corneal stimulations until they reached the fully kindled state (defined as 10 consecutive generalized seizures)...
November 20, 2017: Epilepsia
https://www.readbyqxmd.com/read/29141007/escitalopram-and-nht-normalized-stress-induced-anhedonia-and-molecular-neuroadaptations-in-a-mouse-model-of-depression
#2
Or Burstein, Motty Franko, Eyal Gale, Assaf Handelsman, Segev Barak, Shai Motsan, Alon Shamir, Roni Toledano, Omri Simhon, Yafit Hirshler, Gang Chen, Ravid Doron
Anhedonia is defined as a diminished ability to obtain pleasure from otherwise positive stimuli. Anxiety and mood disorders have been previously associated with dysregulation of the reward system, with anhedonia as a core element of major depressive disorder (MDD). The aim of the present study was to investigate whether stress-induced anhedonia could be prevented by treatments with escitalopram or novel herbal treatment (NHT) in an animal model of depression. Unpredictable chronic mild stress (UCMS) was administered for 4 weeks on ICR outbred mice...
2017: PloS One
https://www.readbyqxmd.com/read/29132642/validity-of-arabic-version-of-the-two-question-quick-inventory-of-depression-qid-2-ar-screening-for-multiple-sclerosis-in-an-arab-environment-and-during-the-syrian-war
#3
A Kubitary, M A Alsaleh
PURPOSE: This study aimed to validate the Arabic version of the two-question Quick Inventory of Depression (QID-2-Ar) in multiple sclerosis (MS) patients living in Syria during the war. METHODS: A total of 100 Syrian MS patients, aged 18-60 years, were recruited at Damascus Hospital and Ibn Al-Nafees Hospital to validate the QID-2-Ar, including analyses of its screening test parameters and its construct validity. RESULTS: The QID-2-Ar screening parameters for depression tested very positively, and its construct validity was also favorable (P<0...
November 10, 2017: Revue Neurologique
https://www.readbyqxmd.com/read/29129610/the-effect-of-rat-strain-and-stress-exposure-on-performance-in-touchscreen-tasks
#4
Lena-Sophie Martis, Simone Krog, Thao Phuong Tran, Elena Bouzinova, Sofie L Christiansen, Arne Møller, Megan C Holmes, Ove Wiborg
Patients suffering from depression-associated cognitive impairments often recover incompletely after remission from the core symptoms of depression (lack of energy, depressed mood and anhedonia). This study aimed to set the basis for clinically relevant testing of cognitive impairments in a preclinical model of depression. Hence, we used the chronic mild stress (CMS) model of depression, which provokes the core symptom of anhedonia in a fraction of the stress exposed animals, while others remain resilient, and assessed the entire CMS groups' cognitive performance on the touchscreen operant platform...
November 10, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29128326/cognitive-remediation-can-improve-negative-symptoms-and-social-functioning-in-first-episode-schizophrenia-a-randomized-controlled-trial
#5
Joseph Ventura, Kenneth L Subotnik, Denise Gretchen-Doorly, Laurie Casaus, Michael Boucher, Gerhard S Hellemann, Keith H Nuechterlein
BACKGROUND: Meta-analyses have reported that the effects of cognitive remediation might go beyond improvement in cognition to include unexpected benefits for schizophrenia patients such as negative symptom reduction and improvements in functioning. In addition, some evidence indicated that these potentially beneficial effects are also present in the initial course of schizophrenia, but work in this area is still developing. METHOD: A RCT compared Cognitive Remediation (CR) to Healthy Behaviors Training (HBT) in 80 patients (78% male) with a mean age of 21...
November 8, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/29127070/an-early-experience-of-mild-adversity-involving-temporary-denial-of-maternal-contact-affects-the-serotonergic-system-of-adult-male-rats-and-leads-to-a-depressive-like-phenotype-and-inability-to-adapt-to-a-chronic-social-stress
#6
Anastasia Diamantopoulou, Theodora Kalpachidou, Georgios Aspiotis, Ioannis Gampierakis, Fotini Stylianopoulou, Antonios Stamatakis
Adverse early life experiences can affect adaptability to chronic stressors and lead to depressive-like behaviors in animal models. We employed an early experience model in which rat pups during postnatal days 10-13 are exposed to a T-maze in which they learn the location of their mother motivated by the rewarding stimulus of maternal contact; one group of rats receives the expected reward, by being allowed contact with the mother upon finding her, while the other group is temporarily denied this contact (Denied Expected Reward, DER), thus experiencing mild adversity...
November 7, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29126980/brain-derived-neurotrophic-factor-in-adjuvant-induced-arthritis-in-rats-relationship-with-inflammation-and-endothelial-dysfunction
#7
Martin Pedard, Céline Demougeot, Clément Prati, Christine Marie
OBJECTIVES: Both peripheral and central brain-derived neurotrophic factor (BDNF) levels are decreased in depression and normalized by efficient anti-depressive therapies. While depression symptoms are frequent in rheumatoid arthritis, BDNF has been poorly investigated in this pathology. Therefore, the present study explored cerebral and peripheral BDNF in arthritis rats as well as the link between brain BDNF and the two factors recently involved in the pathogenesis of depression and present in rheumatoid arthritis namely inflammation and endothelial dysfunction...
November 7, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29124497/parent-child-endorsement-discrepancies-among-youth-at-chronic-risk-for-depression
#8
Bridget A Makol, Antonio J Polo
Depression is one of the most common mental health problems among U.S. adolescents, particularly among Latinos. Parent-child ratings of the presence and severity of child depressive symptoms show only low-to-moderate agreement. However, research has failed to examine discrepancies in populations with the highest levels of unmet need and little is known about patterns and predictors of parent-child agreement in ratings of depressive symptoms among ethnic minority families in community settings. Using a sample of 184 low-income, predominantly Latino, 5th through 7th grade students (63...
November 10, 2017: Journal of Abnormal Child Psychology
https://www.readbyqxmd.com/read/29117870/is-there-enough-interest-in-and-pleasure-in-the-concept-of-depression-the-development-of-the-leuven-affect-and-pleasure-scale-laps
#9
Koen Demyttenaere, Philippe Mortier, Glenn Kiekens, Ronny Bruffaerts
OBJECTIVE: Presence of negative mood (depressed mood) and anhedonia (lack of interest and pleasure) are considered core symptoms of depression, while absence of positive mood is not taken into account. It is therefore remarkable that the depression scales routinely used to assess changes during antidepressant treatment (Hamilton Depression Rating Scale [HDRS], Montgomery-Åsberg Depression Rating Scale [MADRS]) do not really take into account anhedonia. Several scales were developed to assess positive mood and hedonic tone, but they only partially cover the multidimensional concept...
November 9, 2017: CNS Spectrums
https://www.readbyqxmd.com/read/29107326/adult-hippocampal-neurogenesis-in-neuropathic-pain-and-alkyl-glycerol-ethers-treatment
#10
Anna A Tyrtyshnaia, Igor V Manzhulo, Ruslan M Sultanov, Ekaterina V Ermolenko
Neuropathic pain manifested by a number of sensory symptoms is often accompanied by disorders of higher nervous activity, such as memory impairment, depression, anxiety, anhedonia, etc. This emphasizes the involvement of supraspinal structures including the hippocampus in neuropathic pain pathogenesis. In the present study, we focused on the impact of chronic neuropathic pain on hippocampal neurogenesis and microglial state. In addition, we test the effect of alkyl glycerol ethers on hippocampal neuronal and microglial plasticity as well as behavioral parameters...
October 26, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/29107199/kindling-epileptogenesis-and-panic-like-behavior-their-bidirectional-connection-and-contribution-to-epilepsy-associated-depression
#11
Jesús-Servando Medel-Matus, Don Shin, Raman Sankar, Andrey Mazarati
Anxiety is one of the most common comorbidities of epilepsy, which has major detrimental effects on the quality of life. Generalized anxiety disorder (GAD) associated with epilepsy has been receiving most attention. However, several other forms of anxiety reportedly present in patients with epilepsy, including panic disorder (PD). In this study, using an animal model of limbic epilepsy, we examined the interplay between epilepsy and panic-like behavior (PLB). Further, considering the high degree of comorbidity between depression on the one hand, and both epilepsy and PD on the other hand, we studied whether and how the presence of PLB in animals with epilepsy would affect their performance in depression-relevant tests...
October 26, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29106542/dopamine-system-dysregulation-in-major-depressive-disorders
#12
Pauline Belujon, Anthony A Grace
Anhedonia is considered a core feature of major depressive disorder, and the dopamine system plays a pivotal role in the hedonic deficits described in this disorder. Dopaminergic activity is complex and under the regulation of multiple brain structures, including the ventral subiculum of the hippocampus and the basolateral amygdala. Whereas basic and clinical studies demonstrate deficits of the dopaminergic system in depression, the origin of these deficits likely lies in dysregulation of its regulatory afferent circuits...
June 29, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29105062/a-twin-study-exploring-the-association-between-childhood-emotional-and-behaviour-problems-and-specific-psychotic-experiences-in-a-community-sample-of-adolescents
#13
Sania Shakoor, Philip McGuire, Alastair G Cardno, Daniel Freeman, Angelica Ronald
BACKGROUND: Childhood emotional and behaviour problems are antecedents for later psychopathology. This study investigated genetic and environmental influences shaping the longitudinal association between childhood emotional and behaviour problems and specific PEs. METHOD: In a community-based twin sample, parents reported on emotional and behaviour problems when twins were ages 7 and 12 years. At age 16 years, specific PEs were measured using self-reports and parent reports...
November 3, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/29100151/aripiprazole-relieves-motivational-anhedonia-in-rats
#14
Simona Scheggi, Teresa Pelliccia, Carla Gambarana, Maria Graziella De Montis
BACKGROUND: Anhedonia is considered a relevant feature in depression and psychosis, characterized by poor treatment outcome, and associated with deficits in mesolimbic dopaminergic responsiveness. Clinical studies suggest the potential utility of aripiprazole as adjunctive therapy for resistant depression. Since aripiprazole can stabilize the dopaminergic system, in search of tailored therapeutic strategies for reward dysfunctions, we investigated whether the drug restored motivation toward positive stimuli in a rat model...
October 20, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29099549/which-posttraumatic-stress-disorder-symptoms-trauma-types-and-substances-correlate-with-suicide-attempts-in-trauma-survivors
#15
Jeffrey Guina, Ramzi W Nahhas, Nicholas Mata, Seth Farnsworth
Objective: To examine among trauma survivors several potential suicide risk factors, some of which have never been studied in this population (eg, DSM-5 posttraumatic stress disorder [PTSD] symptoms, benzodiazepines). Methods: Using a cross-sectional self-report survey methodology in a consecutive sample of adult outpatients with trauma (N = 480), we examined relationships between suicide attempts and demographics, trauma types, PTSD symptoms, substance-related problems, and benzodiazepine prescriptions...
October 26, 2017: Primary Care Companion to CNS Disorders
https://www.readbyqxmd.com/read/29078101/a-pilot-study-of-cortical-glutathione-in-youth-with-depression
#16
Rachel D Freed, Cecilia N Hollenhorst, Nora Weiduschat, Xiangling Mao, Guoxin Kang, Dikoma C Shungu, Vilma Gabbay
AIM: This study used proton magnetic resonance spectroscopy ((1)H MRS) to measure in vivo brain glutathione (GSH) in adolescents with major depressive disorder (MDD), and explored the relationship between GSH and illness severity and chronicity. Secondarily, associations between GSH and anhedonia, a key symptom of MDD in adolescents, were investigated. METHODS: Occipital cortex GSH levels were obtained in 19 psychotropic medication-free adolescents with MDD (ages 12-21) and compared to those in eight healthy control adolescents...
December 30, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29075568/divergent-anomaly-in-mesocorticolimbic-dopaminergic-circuits-might-be-associated-with-different-depressive-behaviors-an-animal-study
#17
Mei Bai, Xiongzhao Zhu, Li Zhang, Yi Zhang, Liang Xue, Yuting Wang, Mingtian Zhong, Xiuwu Zhang
BACKGROUND: The mesocorticolimbic dopamine system, which originates from the ventral tegmental area (VTA) and projects primarily to the prefrontal cortex (PFC), olfactory tubercle (OT), nucleus accumbens (NAc), dorsal striatum (ST), and the amygdala (AMy), plays a pivotal role in determining individual motivation and sensitivity to rewards, namely, anhedonia. Not all depressive individuals exhibited anhedonia, thus, it is natural to speculate that the heterogenous manifestations of depression might be related to the mesocorticolimbic dopamine system...
October 2017: Brain and Behavior
https://www.readbyqxmd.com/read/29064798/anhedonia-at-experimental-models-of-chronic-stress-and-its-correction
#18
Ruslan V Lutsenko, Antonina H Sydorenko, Viktor M Bobyriov
INTRODUCTION: Different types of chronic stress lead to neurotic and depressive disorders. Key symptoms of these disorders are anhedonia and correction of which will indicate the efficacy of proposed therapy. The aim of the paper is to investigate the influence of amide 2-hydroxy-N-naftalen-1-il-2-(2-oxo-1,2-dihidro-indole-3-iliden) and ethyl ether 4-[2-hydroxy-2-(2-oxo-1,2-dihidro-indole-3-iliden)-acetamin]-butyric acid on anhedonia after the experimental neurosis and chronic moderate stress in rats...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29059254/anhedonia-and-anxiety-underlying-depressive-symptomatology-have-distinct-effects-on-reward-based-decision-making
#19
Katia M Harlé, Dalin Guo, Shunan Zhang, Martin P Paulus, Angela J Yu
Depressive pathology, which includes both heightened negative affect (e.g., anxiety) and reduced positive affect (e.g., anhedonia), is known to be associated with sub-optimal decision-making, particularly in uncertain environments. Here, we use a computational approach to quantify and disambiguate how individual differences in these affective measures specifically relate to different aspects of learning and decision-making in reward-based choice behavior. Fifty-three individuals with a range of depressed mood completed a two-armed bandit task, in which they choose between two arms with fixed but unknown reward rates...
2017: PloS One
https://www.readbyqxmd.com/read/29056427/consequences-of-continuous-social-defeat-stress-on-anxiety-and-depressive-like-behaviors-and-ethanol-reward-in-mice
#20
Giovana Camila de Macedo, Gleice Midori Morita, Liz Paola Domingues, Cristiane Favoretto, Deborah Suchecki, Isabel Marian Hartmann Quadros
This study employed the intruder-resident paradigm to evaluate the effects of continuous social defeat on depressive- and anxiety-like behaviors and the reinforcing and motivational actions of ethanol in male Swiss mice. Male Swiss mice were exposed to a 10-day social defeat protocol, while control mice cohabitated with a non-aggressive animal. Continuous defeat stress consisted of episodes of defeat, followed by 24h or 48h cohabitation with the aggressor until the following defeat. Mice were assessed for sucrose drinking (anhedonia), social investigation test, elevated plus-maze, conditioned place preference to ethanol, and locomotor response to ethanol...
October 19, 2017: Hormones and Behavior
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