2016
DOI: 10.1016/j.peptides.2015.05.013
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[des-Arg 1 ]-Proctolin: A novel NEP-like enzyme inhibitor identified in Tityus serrulatus venom

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Cited by 10 publications
(9 citation statements)
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References 38 publications
(50 reference statements)
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“…1e). In some cases, extracellular peptidase activity does not inactivate the peptide but activates and enhances peptide actions or alters its biological activity by generating cleavage products that either bind to different receptors or act as peptidase inhibitors to enhance the actions of other peptides 16,53 .…”
Section: Fundamentals Of Co-transmissionmentioning
confidence: 99%
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“…1e). In some cases, extracellular peptidase activity does not inactivate the peptide but activates and enhances peptide actions or alters its biological activity by generating cleavage products that either bind to different receptors or act as peptidase inhibitors to enhance the actions of other peptides 16,53 .…”
Section: Fundamentals Of Co-transmissionmentioning
confidence: 99%
“…The ability of a neuropeptide to activate only a limited amount of the available I MI in some pyloric neurons is established for the peptide hormone crustacean cardioactive peptide (CCAP) 123 . Another interesting possibility is suggested by a recently identified component of scorpion venom that has high specificity for, and strong inhibitory activity on, neprilysin, a neutral endopeptidase, in humans and arthropods 53 . Neprilysin cleaves and inactivates tachykinins 124,125 , and neprilysin inhibitors strengthen and prolong the actions of applied and MCN1-released CabTRP Ia 114,117,126 .…”
Section: Co-transmission: Stomatogastric Systemmentioning
confidence: 99%
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“…It is acknowledged that scorpion venom toxins mainly affect the autonomic nervous system, and, in fact, neurotoxins are the most studied molecules of scorpion venoms [ 4 , 5 ]. Only recently have other non-neurotoxic molecules, like peptides and enzymatic components—mainly metalloproteases and hyaluronidase—been more extensively studied [ 6 , 7 , 8 ].…”
Section: Introductionmentioning
confidence: 99%
“…Arg 1 ]-proctolin, por outro lado, é um peptídeo presente no VTs que mostrou seletividade para a inibição da neprilisina (0, 94 µM), e não é capaz de inibir a ACE (DUZZI et al, 2016). Assim, as baixas porcentagens de inibição por fosforamidon, tiorfan e [des-Arg 1 ]-proctolin (todas inferiores a 15%) provavelmente estão atribuídas à fraca seletividade destes inibidores sobre enzimas tipo conversoras de angiotensina I, e à pequena concentração utilizada (10 µM) que se distancia das constantes de inibição descritas para ACE (RAWLINGS et al, 2014 No caso da bradicinina, aparentemente menos enzimas atuam sobre este substrato, uma vez que somente são formados fragmentos relacionados à atividade ACE humana -BK 1-5 e BK 1-7 (CAMARGO et al, 2012), além do fragmento BK [3][4][5][6][7][8][9] provavelmente gerado pela ação de uma aminopeptidase que não é afetada pela presença de captopril, o que pode explicar não ter sido atingido 100% de inibição na concentração de 1 µM de captopril.…”
Section: Estudos Com O Veneno Total Para Screening De Atividades Releunclassified