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Inflammatory mechanisms depression

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https://www.readbyqxmd.com/read/28440737/heart-rate-variability-depression-in-porcine-peritonitis-induced-sepsis-without-organ-failure
#1
Dagmar Jarkovska, Lenka Valesova, Jiri Chvojka, Jan Benes, Vojtech Danihel, Jitka Sviglerova, Lukas Nalos, Martin Matejovic, Milan Stengl
Depression of heart-rate variability (HRV) in conditions of systemic inflammation has been shown in both patients and experimental animal models and HRV has been suggested as an early indicator of sepsis. The sensitivity of HRV-derived parameters to the severity of sepsis, however, remains unclear. In this study we modified the clinically relevant porcine model of peritonitis-induced sepsis in order to avoid the development of organ failure and to test the sensitivity of HRV to such non-severe conditions. In 11 anesthetized, mechanically ventilated and instrumented domestic pigs of both sexes, sepsis was induced by fecal peritonitis...
May 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28433943/acute-lung-injury-leads-to-depression-like-symptoms-through-upregulation-of-neutrophilic-and-neuronal-nadph-oxidase-signaling-in-a-murine-model
#2
Ahmed Nadeem, Nahid Siddiqui, Naif O Al-Harbi, Sabry M Attia, Shakir D AlSharari, Sheikh F Ahmad
There is an increased prevalence of comorbid major depressive disorders with a number of inflammatory conditions which is thought to result from activation of the immune system. Acute lung injury (ALI) in humans has been also shown to be associated with depression previously. However, no study has explored the mechanism behind ALI-induced depression. NADPH oxidase (NOX-2) derived reactive oxygen species (ROS) are associated with neuropsychiatric disorders including depression. ROS generation via NOX-2 is also shown to be involved in the pathogenesis of ALI...
April 20, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28433456/cytokine-alterations-and-cognitive-impairment-in-major-depressive-disorder-from-putative-mechanisms-to-novel-treatment-targets
#3
REVIEW
Błażej Misiak, Jan Aleksander Beszłej, Kamila Kotowicz, Monika Szewczuk-Bogusławska, Jerzy Samochowiec, Jolanta Kucharska-Mazur, Dorota Frydecka
Overwhelming evidence indicates the involvement of immune-inflammatory processes in the pathophysiology of major depressive disorder (MDD). Peripheral cytokine alterations serve as one of most consistently reported indices of subthreshold inflammatory state observed in MDD. Although cytokines cannot pass directly through the blood-brain barrier, a number of transport mechanisms have been reported. In addition, peripheral cytokines may impact central nervous system via downstream effectors of their biological activity...
April 19, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28429885/intravenous-self-administration-of-benzydamine-a-non-steroidal-anti-inflammatory-drug-with-a-central-cannabinoidergic-mechanism-of-action
#4
Riccardo Avvisati, Maria Meringolo, Emiliana Stendardo, Elisa Malavasi, Silvia Marinelli, Aldo Badiani
Benzydamine (BZY) is a non-steroidal anti-inflammatory drug used for the topical treatment of inflammations of the oral and vaginal mucosae. Virtually nothing is known about the central pharmacological actions of BZY. Yet there are reports of voluntary systemic overdosage of BZY in drug addicts, resulting in a euphoric, hallucinatory state. In the present study, we investigated the reinforcing properties of BZY in a rat self-administration paradigm. We found that BZY has a powerful reinforcing effect and that this effect is greatly facilitated in animals that already had substance experience, having previously self-administered heroin and cocaine, indicating cross sensitization between BZY and other common drugs of abuse...
April 21, 2017: Addiction Biology
https://www.readbyqxmd.com/read/28428751/identification-of-nf-%C3%AE%C2%BAb-as-determinant-of-posttraumatic-stress-disorder-and-its-inhibition-by-the-chinese-herbal-remedy-free-and-easy-wanderer
#5
Chunlan Hong, Anja Schüffler, Ulrich Kauhl, Jingming Cao, Ching-Fen Wu, Till Opatz, Eckhard Thines, Thomas Efferth
Posttraumatic stress disorder (PTSD) is a mental disorder developing after exposure to traumatic events. Although psychotherapy reveals some therapeutic effectiveness, clinically sustainable cure is still uncertain. Some Chinese herbal formulae are reported to work well clinically against mental diseases in Asian countries, but the safety and their mode of action are still unclear. In this study, we investigated the mechanisms of Chinese remedy free and easy wanderer (FAEW) on PTSD. We used a reverse pharmacology approach combining clinical data to search for mechanisms of PTSD with subsequent in vitro verification and bioinformatics techniques as follows: (1) by analyzing microarray-based transcriptome-wide mRNA expression profiling of PTSD patients; (2) by investigating the effect of FAEW and the antidepressant control drug fluoxetine on the transcription factor NF-κB using reporter cell assays and western blotting; (3) by performing molecular docking and literature data mining based on phytochemical constituents of FAEW...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28420693/modulation-of-innate-immunity-of-patients-with-alzheimer-s-disease-by-omega-3-fatty-acids
#6
REVIEW
Milan Fiala, Gijs Kooij, Karen Wagner, Bruce Hammock, Matteo Pellegrini
The innate immune system of patients with Alzheimer's disease and mild cognitive impairment (MCI) is deregulated with highly increased or decreased transcription of inflammatory genes and consistently depressed phagocytosis of amyloid-β1-42 (Aβ) by monocytes and macrophages. Current immune therapies target single mechanisms in the adaptive immune system but not innate immunity. Here, we summarize recent advances in therapy by ω-3, ω-6, and epoxy fatty acids; specialized proresolving mediators; and vitamin D3 that have proven immune effects and emerging cognitive effects in patients with MCI...
April 18, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28416811/gene-deficiency-and-pharmacological-inhibition-of-caspase-1-confers-resilience-to-chronic-social-defeat-stress-via-regulating-the-stability-of-surface-ampars
#7
M-X Li, H-L Zheng, Y Luo, J-G He, W Wang, J Han, L Zhang, X Wang, L Ni, H-Y Zhou, Z-L Hu, P-F Wu, Y Jin, L-H Long, H Zhang, G Hu, J-G Chen, F Wang
Both inflammatory processes and glutamatergic systems have been implicated in the pathophysiology of mood-related disorders. However, the role of caspase-1, a classic inflammatory caspase, in behavioral responses to chronic stress remains largely unknown. To address this issue, we examined the effects and underlying mechanisms of caspase-1 on preclinical murine models of depression. We found that loss of caspase-1 expression in Caspase-1(-/-) knockout mice alleviated chronic stress-induced depression-like behaviors, whereas overexpression of caspase-1 in the hippocampus of wild-type (WT) mice was sufficient to induce depression- and anxiety-like behaviors...
April 18, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28415673/camp-pka-creb-bdnf-signaling-pathway-in-hippocampus-mediates-cyclooxygenase-2-induced-learning-memory-deficits-of-rats-subjected-to-chronic-unpredictable-mild-stress
#8
Ying Luo, Shengnan Kuang, Huan Li, Dongzhi Ran, Junqing Yang
To investigate the mechanism of cyclooxygenase 2 (COX2) in learning and memory impairments in rats subjected to chronic unpredictable mild stress (CUMS), meloxicam was used intragastrically to inhibit the activity of cyclooxygenase 2. Moreover, cyclooxygenase 2 over-expressing or RNA interfere lentivirus was injected intraventricularly to increase or decrease the enzyme's expression, respectively. The body weights and sucrose consumption were used to analyze depressive behaviors, while the Morris water maze and step-down-type passive avoidance tests were carried out to evaluate the learning-memory functions...
March 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28411047/immunodepression-after-cpb-cytokine-dynamics-and-clinics-after-pediatric-cardiac-surgery-a-prospective-trial
#9
Georgia Justus, Christoph Walker, Lisa-Maria Rosenthal, Felix Berger, Oliver Miera, Katharina Rose Luise Schmitt
BACKGROUND: Corrective surgery for congenital heart defects is known to trigger a severe immune reaction. There has been extensive research on the effects of inflammation after cardiopulmonary bypass (CPB). Interestingly, monocytes are observed to be non-responsive to stimulation with lipopolysaccharide (LPS) under these conditions, indicating a state of immunodepression, which lays the ground for second hit infections after cardiosurgery with CPB. OBJECTIVES: The aim of this prospective study was to analyze immunodepression after pediatric cardiopulmonary bypass and to differentiate the effects of monocytic anergy on postoperative outcome...
April 11, 2017: Cytokine
https://www.readbyqxmd.com/read/28410265/mangiferin-inhibits-hippocampal-nlrp3-inflammasome-and-exerts-antidepressant-effects-in-a-chronic-mild-stress-mice-model
#10
Changfu Cao, Meiqing Su, Feng Zhou
A growing body of evidence suggests that inflammation may contribute toward the development of major depressive disorder. Mangiferin, a glucosylxanthone from Mangifera indica, exerts a number of biological actions, including anti-inflammatory effects. Although mangiferin has potential antidepressant activity, the mechanisms of this effect remain unclear. The present study investigated the effects of mangiferin on behavioral changes and inflammatory responses induced by chronic mild stress (CMS) in mice. We found that treatment with mangiferin for 3 weeks significantly increased the body weight of mice and ameliorated CMS-induced behavioral abnormalities by increasing sucrose consumption, improving locomotor activities, and decreasing the immobility time in the forced-swimming test and tail-suspension test...
April 13, 2017: Behavioural Pharmacology
https://www.readbyqxmd.com/read/28403510/-new-to-me-changing-patient-understanding-of-psoriasis-and-identifying-mechanisms-of-change-the-pso-well-%C3%A2-patient-materials-mixed-methods-feasibility-study
#11
P A Nelson, K Kane, C J Pearce, C Bundy, A Chisholm, R Hilton, R Thorneloe, H Young, C E M Griffiths, L Cordingley
BACKGROUND: Psoriasis is an inflammatory, long-term condition (LTC) involving co-morbidities, unhealthy lifestyle and significant life impact. Patients' understanding of psoriasis is limited and support lacking. The Common-Sense Self-Regulatory Model emphasises the role of illness/treatment beliefs on coping/self-management. New 'Pso Well(®) ' patient materials informed by the model addressed: psoriasis as a LTC; medications management; and lifestyle behaviours. OBJECTIVES: To investigate whether Pso Well(®) materials: 1) broaden understanding of psoriasis without increasing anxiety; 2) are acceptable and; 3) comprise features that appear to effect change...
April 12, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28400259/a-role-for-the-peripheral-immune-system-in-the-development-of-alcohol-use-disorders
#12
REVIEW
Philippe de Timary, Peter Stärkel, Nathalie M Delzenne, Sophie Leclercq
Preclinical studies have largely supported that alcohol-consumption induces the development of an important neuro-inflammation and this neuro-inflammation contributes to alcohol-drinking behaviors, notably through TLR4 and LPS related mechanisms. The neuro-inflammation originates from a direct interaction of ethanol with the neuronal and immune brain cells, but also from the generation of an inflammation at the periphery. Ethanol in particular interacts with the intestine to develop a gut dysbiosis and an increase in gut permeability, that allows the liberation of bacterial fragments to the systemic circulation and induces a pro-inflammatory response in the systemic circulation and peripheral organs, and in particular the liver...
April 8, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28393713/immune-system-modulators-with-antidepressant-effects-evidence-from-animal-models
#13
Helena M Abelaira, Amanda L Maciel, João Quevedo, Gislaine Réus
BACKGROUND: Major depressive disorder (MDD) is associated with high mortality and morbidity rates, and currently, approximately 340 million people worldwide suffer from depression at some point in life. In view of the growing socio-economic and clinical impact, several studies have focused on the etiopathology of MDD, suggesting that not only the monoaminergic system but also other brain mechanisms may be involved in the pathophysiology of MDD. Recent studies have shown a link between inflammation and MDD and have also demonstrated that antidepressants and anti-inflammatory drugs can act to reduce inflammation, thereby improving depressive symptoms...
April 4, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28382827/cognitive-behaviour-therapy-and-inflammation-a-systematic-review-of-its-relationship-and-the-potential-implications-for-the-treatment-of-depression
#14
Adrian L Lopresti
OBJECTIVE: There is growing evidence confirming increased inflammation in a subset of adults with depression. The impact of this relationship has mostly been considered in biologically based interventions; however, it also has potential implications for psychological therapies. Cognitive behaviour therapy is the most commonly used psychological intervention for the treatment of depression with theories around its efficacy primarily based on psychological mechanisms. However, cognitive behaviour therapy may have an effect on, and its efficacy influenced by, physiological processes associated with depression...
April 1, 2017: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/28375652/the-microbiome-and-human-biology
#15
Rob Knight, Chris Callewaert, Clarisse Marotz, Embriette R Hyde, Justine W Debelius, Daniel McDonald, Mitchell L Sogin
Over the past few years, microbiome research has dramatically reshaped our understanding of human biology. New insights range from an enhanced understanding of how microbes mediate digestion and disease processes (e.g., in inflammatory bowel disease) to surprising associations with Parkinson's disease, autism, and depression. In this review, we describe how new generations of sequencing technology, analytical advances coupled to new software capabilities, and the integration of animal model data have led to these new discoveries...
March 20, 2017: Annual Review of Genomics and Human Genetics
https://www.readbyqxmd.com/read/28373688/microglial-recruitment-of-il-1%C3%AE-producing-monocytes-to-brain-endothelium-causes-stress-induced-anxiety
#16
D B McKim, M D Weber, A Niraula, C M Sawicki, X Liu, B L Jarrett, K Ramirez-Chan, Y Wang, R M Roeth, A D Sucaldito, C G Sobol, N Quan, J F Sheridan, J P Godbout
Psychosocial stress contributes to the development of anxiety and depression. Recent clinical studies have reported increased inflammatory leukocytes in circulation of individuals with stress-related psychiatric disorders. Parallel to this, our work in mice shows that social stress causes release of inflammatory monocytes into circulation. In addition, social stress caused the development of prolonged anxiety that was dependent on inflammatory monocytes in the brain. Therefore, we hypothesize that chronic stress drives the production of inflammatory monocytes that are actively recruited to the brain by microglia, and these monocytes augment neuroinflammatory signaling and prolong anxiety...
April 4, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28372497/astrocyte-mediated-inflammation-in-cortical-spreading-depression
#17
Amir Ghaemi, Leila Alizadeh, Shahnaz Babaei, Maryam Jafarian, Maryam Khaleghi Ghadiri, Sven G Meuth, Stjepana Kovac, Ali Gorji
Background Cortical spreading depression (CSD) related diseases such as migraine, cerebrovascular diseases, and epilepsy have been associated with reactive astrocytosis, yet the mechanisms of these tissue changes remain unclear. CSD-induced inflammatory response has been proposed to play a role in some neurological disorders and thus may also contribute to reactive astrocytosis. Methods Using ex vivo brain slices and in vitro astrocytic cultures, we aimed to characterize CSD related changes in astrocytes and markers of inflammation by immunocyto- and immunohistochemistry...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28371810/characteristics-of-the-musculoskeletal-symptoms-observed-among-survivors-of-ebola-virus-disease-in-the-postebogui-cohort-in-guinea
#18
Yves-Marie Pers, Mamadou Saliou Sow, Bernard Taverne, Laura March, Suzanne Izard, Jean François Étard, Moumié Barry, Abdoulaye Touré, Eric Delaporte
Objective.: Previous studies show that arthralgia is the most common symptom experienced by Ebola virus disease (EVD) survivors. Nevertheless, specific analyses of rheumatological sequelea are still lacking. Methods.: The Postebogui study is a prospective, multicentre cohort aiming to evaluate the long-term outcomes of EVD survivors infected during the 2014-15 outbreak in Guinea. Of the 216 participants enrolled in the study in October 2015, 44 patients with arthralgia/myalgia underwent a physical examination by a rheumatologist (the Eborheum cohort)...
March 22, 2017: Rheumatology
https://www.readbyqxmd.com/read/28366738/the-heartbreak-of-depression-psycho-cardiac-coupling-in-myocardial-infarction
#19
REVIEW
John P Headrick, Jason N Peart, Boris P Budiono, David H K Shum, David L Neumann, Nicolas J C Stapelberg
Ample evidence identifies strong links between major depressive disorder (MDD) and both risk of ischemic or coronary heart disease (CHD) and resultant morbidity and mortality. The molecular mechanistic bases of these linkages are poorly defined. Systemic factors linked to MDD, including vascular dysfunction, atherosclerosis, obesity and diabetes, together with associated behavioral changes, all elevate CHD risk. Nonetheless, experimental evidence indicates the myocardium is also directly modified in depression, independently of these factors, impairing infarct tolerance and cardioprotection...
March 31, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28352129/cyclooxygenase-2-signalling-pathway-in-the-cortex-is-involved-in-the-pathophysiological-mechanisms-in-the-rat-model-of-depression
#20
Qi Chen, Ying Luo, Shengnan Kuang, Yang Yang, Xiaoyan Tian, Jie Ma, Shaoshan Mai, Lai Xue, Junqing Yang
This study was designed to investigate the effect of the cortical cyclooxygenase-2 (COX2) pathway on depressive behaviour in rats. Meloxicam, COX2 overexpressed lentivirus and COX2 RNAi lentivirus were administered to Sprague-Dawley rats subjected to chronic unpredictable mild stress (CUMS). Behaviour tests, biochemistry and immunohistochemistry methods, enzyme-linked immunosorbent assays, western blotting and reverse transcription polymerase chain reactions were used to evaluate the changes in rat behaviour and the cortical COX2 pathway...
March 28, 2017: Scientific Reports
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