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Purinergic signalling review

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https://www.readbyqxmd.com/read/29774059/inflammation-in-stroke-the-role-of-cholinergic-purinergic-and-glutamatergic-signaling
#1
REVIEW
Abraham Martín, María Domercq, Carlos Matute
The inflammatory response is a major factor in stroke pathophysiology and contributes to secondary neuronal damage in both acute and chronic stages of the ischemic injury. Recent work in experimental cerebral ischemia has demonstrated the involvement of neurotransmitter signaling in the modulation of neuroinflammation. The present review discusses recent findings on the therapeutic potential and diagnostic perspectives of cholinergic, purinergic and glutamatergic receptors and transporters in experimental stroke...
2018: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/29745882/the-adenosinergic-system-a-potential-player-in-the-pathogenesis-of-anca-associated-vasculitis
#2
REVIEW
Lovis Kling, Bernhard K Krämer, Benito A Yard, Anna-Isabelle Kälsch
Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a potentially lethal autoimmune disease whose pathology comprises disturbed T cell differentiation and functionality accompanied by dysfunctional autoreactive immunoglobulin development, culminating in destructive innate immune response as well. Purines, adenine nucleotides and adenosine in particular, have been elucidated as potent extracellular mediators for fine adjustment of these pivotal processes establishing human immunity. Therefore, the extracellular purinergic microenvironment is under control of ectonucleotidases CD39 and CD73 degrading pro-inflammatory adenosine triphosphate (ATP) to anti-inflammatory adenosine as well as adenosine deaminase bound to CD26 deactivating adenosine...
May 3, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29713276/amyotrophic-lateral-sclerosis-als-and-adenosine-receptors
#3
REVIEW
Ana M Sebastião, Nádia Rei, Joaquim A Ribeiro
In the present review we discuss the potential involvement of adenosinergic signaling, in particular the role of adenosine receptors, in amyotrophic lateral sclerosis (ALS). Though the literature on this topic is not abundant, the information so far available on adenosine receptors in animal models of ALS highlights the interest to continue to explore the role of these receptors in this neurodegenerative disease. Indeed, all motor neurons affected in ALS are responsive to adenosine receptor ligands but interestingly, there are alterations in pre-symptomatic or early symptomatic stages that mirror those in advanced disease stages...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29692728/purinergic-receptors-in-neurological-diseases-with-motor-symptoms-targets-for-therapy
#4
REVIEW
Ágatha Oliveira-Giacomelli, Yahaira Naaldijk, Laura Sardá-Arroyo, Maria C B Gonçalves, Juliana Corrêa-Velloso, Micheli M Pillat, Héllio D N de Souza, Henning Ulrich
Since proving adenosine triphosphate (ATP) functions as a neurotransmitter in neuron/glia interactions, the purinergic system has been more intensely studied within the scope of the central nervous system. In neurological disorders with associated motor symptoms, including Parkinson's disease (PD), motor neuron diseases (MND), multiple sclerosis (MS), amyotrophic lateral sclerosis (ALS), Huntington's Disease (HD), restless leg syndrome (RLS), and ataxias, alterations in purinergic receptor expression and activity have been noted, indicating a potential role for this system in disease etiology and progression...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29669994/mechanisms-of-atp-release-by-inflammatory-cells
#5
REVIEW
Michel Dosch, Joël Gerber, Fadi Jebbawi, Guido Beldi
Extracellular nucleotides (e.g., ATP, ADP, UTP, UDP) released by inflammatory cells interact with specific purinergic P2 type receptors to modulate their recruitment and activation. The focus of this review is on stimuli and mechanisms of extracellular nucleotide release and its consequences during inflammation. Necrosis leads to non-specific release of nucleotides, whereas specific release mechanisms include vesicular exocytosis and channel-mediated release via connexin or pannexin hemichannels. These release mechanisms allow stimulated inflammatory cells such as macrophages, neutrophils, and endothelial cells to fine-tune autocrine/paracrine responses during acute and chronic inflammation...
April 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29619754/the-involvement-of-purinergic-signalling-in-obesity
#6
REVIEW
Geoffrey Burnstock, Daniela Gentile
Obesity is a growing worldwide health problem, with an alarming increasing prevalence in developed countries, caused by a dysregulation of energy balance. Currently, no wholly successful pharmacological treatments are available for obesity and related adverse consequences. In recent years, hints obtained from several experimental animal models support the notion that purinergic signalling, acting through ATP-gated ion channels (P2X), G protein-coupled receptors (P2Y) and adenosine receptors (P1), is involved in obesity, both at peripheral and central levels...
April 4, 2018: Purinergic Signalling
https://www.readbyqxmd.com/read/29593540/purinergic-ligands-as-potential-therapeutic-tools-for-the-treatment-of-inflammation-related-intestinal-diseases
#7
REVIEW
Diego Dal Ben, Luca Antonioli, Catia Lambertucci, Matteo Fornai, Corrado Blandizzi, Rosaria Volpini
Inflammation-related intestinal diseases are a set of various conditions presenting an overactive enteric immune system. A continuous overproduction of pro-inflammatory cytokines and a decreased production of anti-inflammatory modulators are generally observed, while morpho-functional alterations of the enteric nervous system lead to intestinal secretory and motor dysfunctions. The factors at the basis of these conditions are still to be totally identified and current therapeutic strategies are aimed only at achieving and maintaining remission states, by using therapeutic tools like aminosalicylates, corticosteroids, immunomodulators, biological drugs (i...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29563872/the-metabotropic-purinergic-p2y-receptor-family-as-novel-drug-target-in-epilepsy
#8
REVIEW
Mariana Alves, Edward Beamer, Tobias Engel
Epilepsy encompasses a heterogeneous group of neurological syndromes which are characterized by recurrent seizures affecting over 60 million people worldwide. Current anti-epileptic drugs (AEDs) are mainly designed to target ion channels and/or GABA or glutamate receptors. Despite recent advances in drug development, however, pharmacoresistance in epilepsy remains as high as 30%, suggesting the need for the development of new AEDs with a non-classical mechanism of action. Neuroinflammation is increasingly recognized as one of the key players in seizure generation and in the maintenance of the epileptic phenotype...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29545806/purinergic-regulation-of-neutrophil-function
#9
REVIEW
Xu Wang, Deyu Chen
Purinergic signaling, which utilizes nucleotides (particularly ATP) and adenosine as transmitter molecules, plays an essential role in immune system. In the extracellular compartment, ATP predominantly functions as a pro-inflammatory molecule through activation of P2 receptors, whereas adenosine mostly functions as an anti-inflammatory molecule through activation of P1 receptors. Neutrophils are the most abundant immune cells in circulation and have emerged as an important component in orchestrating a complex series of events during inflammation...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29521602/role-of-glial-like-type-ii-cells-as-paracrine-modulators-of-carotid-body-chemoreception
#10
Colin A Nurse, Erin M Leonard, Shaima Salman
Mammalian carotid bodies (CB) are chemosensory organs that mediate compensatory cardiorespiratory reflexes in response to low blood PO2 (hypoxemia) and elevated CO2 /H+ (acid hypercapnia). The chemoreceptors are glomus or type I cells that occur in clusters enveloped by neighboring glial-like type II cells. During chemoexcitation type I cells depolarize, leading to Ca2+ -dependent release of several neurotransmitters, some excitatory and others inhibitory, that help shape the afferent carotid sinus nerve (CSN) discharge...
April 1, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29467662/purinergic-signaling-in-neuron-astrocyte-interactions-circadian-rhythms-and-alcohol-use-disorder
#11
REVIEW
Daniel Lindberg, Lindsey Andres-Beck, Yun-Fang Jia, Seungwoo Kang, Doo-Sup Choi
Alcohol use disorder (AUD) is a debilitating condition marked by cyclic patterns of craving, use, and withdrawal. These pathological behaviors are mediated by multiple neurotransmitter systems utilizing glutamate, GABA, dopamine, ATP, and adenosine. In particular, purines such as ATP and adenosine have been demonstrated to alter the phase and function of the circadian clock and are reciprocally regulated by the clock itself. Importantly, chronic ethanol intake has been demonstrated to disrupt the molecular circadian clock and is associated with altered circadian patterns of activity and sleep...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29467654/the-p2x7-receptor-in-inflammatory-diseases-angel-or-demon
#12
REVIEW
Luiz E B Savio, Paola de Andrade Mello, Cleide Gonçalves da Silva, Robson Coutinho-Silva
Under physiological conditions, adenosine triphosphate (ATP) is present at low levels in the extracellular milieu, being massively released by stressed or dying cells. Once outside the cells, ATP and related nucleotides/nucleoside generated by ectonucleotidases mediate a high evolutionary conserved signaling system: the purinergic signaling, which is involved in a variety of pathological conditions, including inflammatory diseases. Extracellular ATP has been considered an endogenous adjuvant that can initiate inflammation by acting as a danger signal through the activation of purinergic type 2 receptors-P2 receptors (P2Y G-protein coupled receptors and P2X ligand-gated ion channels)...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29453990/atp-activated-p2x7-receptor-in-the-pathophysiology-of-mood-disorders-and-as-an-emerging-target-for-the-development-of-novel-antidepressant-therapeutics
#13
REVIEW
Linyu Wei, Sharifah A Syed Mortadza, Jing Yan, Libin Zhang, Lu Wang, Yaling Yin, Chaokun Li, Sylvie Chalon, Patrick Emond, Catherine Belzung, Dongliang Li, Chengbiao Lu, Sebastien Roger, Lin-Hua Jiang
Mood disorders are a group of psychiatric conditions that represent leading global disease burdens. Increasing evidence from clinical and preclinical studies supports that innate immune system dysfunction plays an important part in the pathophysiology of mood disorders. P2X7 receptor, belonging to the ligand-gated ion channel P2X subfamily of purinergic P2 receptors for extracellular ATP, is highly expressed in immune cells including microglia in the central nervous system (CNS) and has a vital role in mediating innate immune response...
April 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29377124/purinergic-signaling-in-oligodendrocyte-development-and-function
#14
REVIEW
Taylor G Welsh, Sarah Kucenas
Myelin, an insulating membrane that enables rapid action potential propagation, is an essential component of an efficient, functional vertebrate nervous system. Oligodendrocytes, the myelinating glia of the central nervous system (CNS), produce myelin throughout the CNS, which requires continuous proliferation, migration, and differentiation of oligodendrocyte progenitor cells. Because myelination is essential for efficient neurotransmission, researchers hypothesize that neuronal signals may regulate the cascade of events necessary for this process...
April 2018: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29360885/purinergic-signaling-in-b-cells
#15
Tomasz Przybyła, Monika Sakowicz-Burkiewicz, Tadeusz Pawełczyk
Adenosine and adenosine triphosphate are involved in purinergic signaling which plays an important role in control of the immune system. Much data have been obtained regarding impact of purinergic signaling on dendritic cells, macrophages, monocytes and T lymphocytes, however less attention has been paid to purinergic regulation of B cells. This review summarizes present knowledge on ATP- and Ado-dependent signaling in B lymphocytes. Human B cells have been shown to express A1 -AR, A2A -AR, A2B -AR and A3 -AR and each subtype of P2 receptors...
2018: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/29315226/unfolding-role-of-a-danger-molecule-adenosine-signaling-in-modulation-of-microbial-infection-and-host-cell-response
#16
REVIEW
Jaden S Lee, Özlem Yilmaz
Ectonucleotidases CD39 and CD73, specific nucleotide metabolizing enzymes located on the surface of the host, can convert a pro-inflammatory environment driven by a danger molecule extracellular-ATP to an adenosine-mediated anti-inflammatory milieu. Accordingly, CD39/CD73 signaling have has strongly implicated in modulating the intensity, duration, and composition of purinergic danger signals delivered to host. Recent studies have eluted potential roles for CD39 and CD73 in selective triggering of a variety of host immune cells and molecules in the presence of pathogenic microorganisms or microbial virulence molecules...
January 9, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29274390/extracellular-atp-signaling-and-clinical-relevance
#17
REVIEW
Lei Dou, Yi-Fa Chen, Peter J Cowan, Xiao-Ping Chen
Since purinergic signaling was discovered in the early 1970s, it has been shown that extracellular nucleotides, and their derivative nucleosides, are released in a regulated or unregulated manner by cells in various challenging settings and then bind defined purinergic receptors to activate intricate signaling networks. Extracellular ATP plays a role based on different P2 receptor subtypes expressed on specific cell types. Sequential hydrolysis of extracellular ATP catalyzed by ectonucleotidases (e.g. CD39, CD73) is the main pathway for the generation of adenosine, which in turn activates P1 receptors...
March 2018: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/29249968/purinergic-receptors-in-adipose-tissue-as-potential-targets-in-metabolic-disorders
#18
REVIEW
Marco Tozzi, Ivana Novak
Extracellular nucleosides and nucleotides, such as adenosine and adenosine triphosphate (ATP), are involved in many physiological and pathological processes in adipose tissue (AT). It is becoming accepted that, in addition to the well-established sympathetic and hormonal system, purinergic receptors contribute significantly to regulation of adipocyte functions. Several receptor subtypes for both adenosine (P1) and ATP (P2X and P2Y) have been characterized in white adipocytes (WA) and brown adipocytes (BA). The effects mediated by adenosine and ATP on adipocytes are multiple and often differing, depending on specific receptors activated...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29233884/revisiting-multimodal-activation-and-channel-properties-of-pannexin-1
#19
REVIEW
Yu-Hsin Chiu, Michael S Schappe, Bimal N Desai, Douglas A Bayliss
Pannexin 1 (Panx1) forms plasma membrane ion channels that are widely expressed throughout the body. Panx1 activation results in the release of nucleotides such as adenosine triphosphate and uridine triphosphate. Thus, these channels have been implicated in diverse physiological and pathological functions associated with purinergic signaling, such as apoptotic cell clearance, blood pressure regulation, neuropathic pain, and excitotoxicity. In light of this, substantial attention has been directed to understanding the mechanisms that regulate Panx1 channel expression and activation...
January 2, 2018: Journal of General Physiology
https://www.readbyqxmd.com/read/29184552/multifaceted-effects-of-extracellular-adenosine-triphosphate-and-adenosine-in-the-tumor-host-interaction-and-therapeutic-perspectives
#20
REVIEW
Paola de Andrade Mello, Robson Coutinho-Silva, Luiz Eduardo Baggio Savio
Cancer is still one of the world's most pressing health-care challenges, leading to a high number of deaths worldwide. Immunotherapy is a new developing therapy that boosts patient's immune system to fight cancer by modifying tumor-immune cells interaction in the tumor microenvironment (TME). Extracellular adenosine triphosphate (eATP) and adenosine (Ado) are signaling molecules released in the TME that act as modulators of both immune and tumor cell responses. Extracellular adenosine triphosphate and Ado activate purinergic type 2 (P2) and type 1 (P1) receptors, respectively, triggering the so-called purinergic signaling...
2017: Frontiers in Immunology
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