| Full text | |
| Author(s): |
Correa, Mara A.
[1]
;
Okamoto, Cinthya K.
[1]
;
Goncalves-de-Andrade, Rute M.
[1]
;
van den Berg, Carmen W.
[2]
;
Tambourgi, Denise V.
[1]
Total Authors: 5
|
| Affiliation: | [1] Butantan Inst, Immunochem Lab, Sao Paulo - Brazil
[2] Cardiff Univ, Sch Med, Inst Mol & Expt Med, Cardiff CF10 3AX, S Glam - Wales
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | PLoS One; v. 11, n. 4 APR 14 2016. |
| Web of Science Citations: | 10 |
| Abstract | |
Envenomation by Loxosceles spider is characterized by the development of dermonecrosis. In previous studies, we have demonstrated that increased expression/secretion of matrix metalloproteinases 2 and 9, induced by Loxosceles intermedia venom Class 2 SMases D (the main toxin in the spider venom), contribute to the development of cutaneous loxoscelism. In the present study we show that the more potent venom containing the Class 1 SMase D from Loxosceles laeta, in addition to increasing the expression/secretion of MMP2 and MMP9, also stimulates the expression of MMP7 (Matrilysin-1), which was associated with keratinocyte cell death. Tetracycline, a matrix metalloproteinase inhibitor, prevented cell death and reduced MMPs expression. Considering that L. laeta venom is more potent at inducing dermonecrosis than L. intermedia venom, our results suggest that MMP7 may play an important role in the severity of dermonecrosis induced by L. laeta spider venom SMase D. In addition, the inhibition of MMPs by e.g. tetracyclines may be considered for the treatment of the cutaneous loxoscelism. (AU) | |
| FAPESP's process: | 13/07467-1 - CeTICS - Center of Toxins, Immune-Response and Cell Signaling |
| Grantee: | Hugo Aguirre Armelin |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |