Neuropathic pain - page 9 Scientific Publications

Latest publication 09/18/2015

Modulation of Disulfide Dual ENKephalinase Inhibitors -DENKIs- Activity by a Tra

The endogenous opioid system, essentially constituted by two opioid receptors which are stimulated by the natural internal effectors enkephalins...

Array
(
    [id_prestablog_news] => 760
    [id_shop] => 1
    [date] => 2015-09-18 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
    [ishero] => 0
    [prim_key] => 1485
    [id_lang] => 1
    [title] => Modulation of Disulfide Dual ENKephalinase Inhibitors -DENKIs- Activity by a Tra
    [paragraph] => Modulation of Disulfide Dual ENKephalinase Inhibitors (DENKIs) Activity by a Transient N-protection for Pain Alleviation by Oral Route
    [content] => 
Authors
Poras H, Bonnard E, Fournié-Zaluski MC, Roques BP

 Lab
Pharmaleads, Paris BioPark, Paris, France
Journal
Eur J Med Chem.
Abstract
The endogenous opioid system, essentially constituted by two opioid receptors which are stimulated by the natural internal effectors enkephalins (Met-enkephalin and Leu-enkephalin), is present at the different sites (peripheral, spinal, central) of the control of pain. We have demonstrated that the protection of the enkephalin inactivation by the two metallopeptidases (neprilysin and neutral aminopeptidase) increases their local concentration selectively induced by pain stimuli triggering analgesic responses. With the aim of increasing the orally antinociceptive responses of the previously described disulfide DENKIs ( [Formula: see text] CH(R1)CH2-S-S-CH2-C(R2R3)CONHCH(R4)COOR5), we designed new pro-drugs, in the same chemical series, with a transient protection of the free amino group by an acyloxyalkyl carbamate, giving rise to ((CH3)2CHCO2CH(CH3)OCONHCH(R1)CH2-S-S-CH2-C(R2R3)CONHCH(R4)COOR5) pro-drugs 2a-2g. These compounds were easily prepared from their parent analogs, with a good yield. They were tested per os and shown to be highly efficient in peripherally-controlled inflammatory and neuropathic pain with long lasting effects but completely inactive in the acute centrally-controlled hot plate test, a model of pain by excess of nociception. This demonstrates that DENKIs are able to relieve pain at its source thanks to the increase of enkephalin levels.
BIOSEB Instruments Used
Cold Hot Plate Test (BIO-CHP)

Keywords/Topics
General pain; Inflammatory pain; Neuropathic pain; Pharmacology; Cross-disciplinary subjects ; Pain
    [meta_description] => 
    [meta_keywords] => http://www.ncbi.nlm.nih.gov/pubmed/26241877
    [meta_title] => 
    [link_rewrite] => modulation-of-disulfide-dual-enkephalinase-inhibitors--denkis--activity-by-a-transient-n-protection-for-pain-alleviation-by-oral-route
    [actif_langue] => 1
    [read] => 1421
    [count_comments] => 0
    [id] => 760
    [categories] => Array
        (
            [24] => Array
                (
                    [id_prestablog_categorie] => 24
                    [title] => Cross-disciplinary subjects 
                    [link_rewrite] => Cross-disciplinary-subjects-
                )

            [27] => Array
                (
                    [id_prestablog_categorie] => 27
                    [title] => General pain
                    [link_rewrite] => General-pain
                )

            [28] => Array
                (
                    [id_prestablog_categorie] => 28
                    [title] => Inflammatory pain
                    [link_rewrite] => Inflammatory-pain
                )

            [29] => Array
                (
                    [id_prestablog_categorie] => 29
                    [title] => Neuropathic pain
                    [link_rewrite] => Neuropathic-pain
                )

            [10] => Array
                (
                    [id_prestablog_categorie] => 10
                    [title] => Pain
                    [link_rewrite] => Pain
                )

            [95] => Array
                (
                    [id_prestablog_categorie] => 95
                    [title] => Pharmacology
                    [link_rewrite] => Pharmacology
                )

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

        )

    [authors] => 
    [paragraph_crop] => Modulation of Disulfide Dual ENKephalinase Inhibitors (DENKIs) Activity by a Transient [...]
    [link_for_unique] => 1
    [products_liaison] => Array
        (
            [563] => Array
                (
                    [name] => Cold Hot Plate Test
                    [description_short] => 
For testing animal's thermal sensitivity to pain resulting from exposure to heat or cold: the Cold Hot Plate is an innovative instrument opening new investigation fields for your analgesia and nociception research, and a useful tool for analgesic drug screening using rats or mice models.

                    [thumb] => 
                    [img_empty] => /var/www/vhosts/de3310.ispfr.net/bioseb2024/modules/prestablog/views/img/product_link_white.jpg
                    [image_presente] => 1
                    [link] => https://bioseb.com/en/pain-thermal-allodynia-hyperalgesia/563-cold-hot-plate-test.html
                )

        )

)
1