Publications

Latest publication 01/27/2015

Deficits in endogenous adenosine formation by ecto-5-nucleotidase and CD73 impai

AMP dephosphorylation via ecto-5-nucleotidase/CD73 is the rate limiting step to generate extracellular adenosine (ADO) from released adenine...

Array
(
    [id_prestablog_news] => 717
    [id_shop] => 1
    [date] => 2015-01-27 00:00:00
    [date_modification] => 2024-02-09 14:15:12
    [langues] => ["1","2"]
    [actif] => 1
    [slide] => 0
    [url_redirect] => 
    [average_rating] => 
    [number_rating] => 
    [author_id] => 1
    [featured] => 0
    [prim_key] => 1401
    [id_lang] => 1
    [title] => Deficits in endogenous adenosine formation by ecto-5-nucleotidase and CD73 impai
    [paragraph] => Deficits in endogenous adenosine formation by ecto-5-nucleotidase/CD73 impair neuromuscular transmission and immune competence in experimental autoimmune myasthenia gravis.
    [content] => 
Authors
Oliveira L, Correia A, Cristina Costa A, Guerra-Gomes S, Ferreirinha F, Magalhães-Cardoso MT, Vilanova M, Correia-de-Sá P

 Lab
Laboratório de Farmacologia e Neurobiologia, UMIB and MedInUP, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto, Portugal
Journal
Mediators Inflamm.
Abstract
AMP dephosphorylation via ecto-5-nucleotidase/CD73 is the rate limiting step to generate extracellular adenosine (ADO) from released adenine nucleotides. ADO, via A2A receptors (A2ARs), is a potent modulator of neuromuscular and immunological responses. The pivotal role of ecto-5-nucleotidase/CD73, in controlling extracellular ADO formation, prompted us to investigate its role in a rat model of experimental autoimmune myasthenia gravis (EAMG). Results show that CD4(+)CD25(+)FoxP3(+) regulatory T cells express lower amounts of ecto-5-nucleotidase/CD73 as compared to controls. Reduction of endogenous ADO formation might explain why proliferation of CD4(+) T cells failed upon blocking A2A receptors activation with ZM241385 or adenosine deaminase in EAMG animals. Deficits in ADO also contribute to neuromuscular transmission failure in EAMG rats. Rehabilitation of A2AR-mediated immune suppression and facilitation of transmitter release were observed by incubating the cells with the nucleoside precursor, AMP. These findings, together with the characteristic increase in serum adenosine deaminase activity of MG patients, strengthen our hypothesis that the adenosinergic pathway may be dysfunctional in EAMG. Given that endogenous ADO formation is balanced by ecto-5-nucleotidase/CD73 activity and that A2ARs exert a dual role to restore use-dependent neurocompetence and immune suppression in myasthenics, we hypothesize that stimulation of the two mechanisms may have therapeutic potential in MG.
BIOSEB Instruments Used
Grip strength test (BIO-GS3)
    [meta_description] => 
    [meta_keywords] => http://www.ncbi.nlm.nih.gov/pubmed/25691808
    [meta_title] => 
    [link_rewrite] => deficits-in-endogenous-adenosine-formation-by-ecto-5-nucleotidase-and-cd73-impair-neuromuscular-transmission-and-immune-competence-in-experimental-autoimmune-myasthenia-gravis-
    [actif_langue] => 1
    [read] => 1079
    [count_comments] => 0
    [id] => 717
    [categories] => Array
        (
            [26] => Array
                (
                    [id_prestablog_categorie] => 26
                    [title] => Miscellaneous research domains
                    [link_rewrite] => Miscellaneous-research-domains
                )

            [2] => Array
                (
                    [id_prestablog_categorie] => 2
                    [title] => Publications
                    [link_rewrite] => publications
                )

        )

    [authors] => 
    [paragraph_crop] => Deficits in endogenous adenosine formation by ecto-5-nucleotidase/CD73 impair neuromuscular [...]
    [link_for_unique] => 1
    [products_liaison] => Array
        (
            [48] => Array
                (
                    [name] => Grip strength test
                    [description_short] => 
An easy way to objectively quantify the muscular strength of mice and rats, and to assess the effect of drugs, toxins, muscular (i.e. myopathy) and neurodegenerative diseases on muscular degeneration. It is widely used in conjunction with the ROTAROD motor coordination test: a normally coordinated rodent will show a decreased latency to fall off the rotating rod if its muscular strength is low. The Grip Strength Test is a must for your research on activity, motor control & coordination, and is particularly well suited for studies on Parkinson's & Huntington's disease.
New features GS4 - 2023: Color display with permanent backlight screen for easier reading, reset by footswitch, Improved battery time, Larger data memory of 500 values, Animal counter, USB port (charging/data transfer)

                    [thumb] => 
                    [img_empty] => /var/www/vhosts/de3310.ispfr.net/preprod.bioseb.com/modules/prestablog/views/img/product_link_white.jpg
                    [image_presente] => 1
                    [link] => https://preprod.bioseb.com/en/activity-motor-control-coordination/48-grip-strength-test.html
                )

        )

)
1