Odenbach J1, Wang X et al.
MMP-2 mediates angiotensin II-induced hypertension under the transcriptional control of MMP-7 and TACE. Hypertension. 2011 Jan;57(1):123-30. doi: 10.1161/HYPERTENSIONAHA.110.159525. Epub 2010 Nov 15.
Tiivistelmästä suomennosta. Abstract
- Kardiovaskulaarisen taudin kehittyminen liiallisesta Gq-kytkeytyneen reseptoriagonistin stimuloitumisesta riippuu sellaisesta signalointiverkostosta, johon osallistuu monia metalloproteinaaseja (MMPs) ja metalloproteinaasi-disintegraaseja(ADAMs).
Development
of cardiovascular disease induced by excessive Gq protein-coupled
receptor agonist stimulation depends on signaling networks involving
multiple matrix metalloproteinases (MMPs) and metalloproteinase
disintegrins (ADAMs).
We targeted MMP-2 using complementary and overlapping approaches involving pharmacological inhibition and RNA interference in mice treated with angiotensin II (1.4 mg/kg per day) for 12 days. We studied the development of hypertension (by tail cuff plethysmography), cardiac hypertrophy (by M-mode echocardiography, cardiomyocyte cross-sectional area, and quantitative real-time polymerase chain reaction (qRT-PCR) analysis of hypertrophy marker genes), and fibrosis (by picrosirius red collagen staining and qRT-PCR analysis of fibrosis marker genes) in mice receiving angiotensin II.
In contrast, pharmacological inhibition and RNA interference of MMP-2 attenuated angiotensin II-induced hypertension, without influencing development of cardiac hypertrophy or fibrosis.
Downstream of MMP-7 and TACE (ADAM17) , MMP-2 mediated angiotensin II-induced hypertension, but did not mediate cardiac hypertrophy or fibrosis. This suggests a functional specialization of MMP-2 in agonist-induced cardiovascular disease development that has potential implications for the design of metalloproteinase-based therapeutic strategies.
- Tässä tutkijat ovat tehneet hypoteesin, että MMP-2, joka on päägelatinaasi sydän- ja verisuonikudoksessa on todennäköinen avaintekijä kardiovaskulaarisessa homeostaasissa.
- Menetelmät.
We targeted MMP-2 using complementary and overlapping approaches involving pharmacological inhibition and RNA interference in mice treated with angiotensin II (1.4 mg/kg per day) for 12 days. We studied the development of hypertension (by tail cuff plethysmography), cardiac hypertrophy (by M-mode echocardiography, cardiomyocyte cross-sectional area, and quantitative real-time polymerase chain reaction (qRT-PCR) analysis of hypertrophy marker genes), and fibrosis (by picrosirius red collagen staining and qRT-PCR analysis of fibrosis marker genes) in mice receiving angiotensin II.
- Tulokset. Angiotensiini II - infuusio sääti ylös MMP-2 proteinaasin ja samalla samanaikaisesti hypertension, hypertrofian ja fibroosin kehittymisen. Tämä MMP-2:n ylössäätyminen taas oli riippuvainen MMP-7:stä ja TACE (ADAM-17) tekijästä, joka on tuumorinekroosifaktori alfan konvertaasi.
- Jos kohdistettiin RNA-interferenssi MMP-7 -proteinaasiin ja tähän konvertaasiin TACE, vaimeni angiotensiini-II:n indusoima ylössäätö MMP-2:ssa. ja esti hyperrtension kehittymisen kuten myös sydämen hypertrofian ja fibroosin kehittymisen.
- Ja päinvastoin: Jos tehtiin farmakologinen inhibitio ja kohdistettiin RNA interferenssi suoraan MMP-2 proteinaasiin, vaimeni angiotensiini-II:n indusoima hypertensiivinen vaikutus vaikuttamatta sydämen hypertrofioitumiseen ja fibrotisoitumiseen.. MMP-7 ja TACE (ADAM17) entsyymien säätelyn alavirran puolella MMP-2 välitti angiotensiini-II- indusoitua hypertensiota mutta se ei välittänyt niitä vaikutuksia, jotka johtivat sydämen hypertrofiaan ja fibroosiin.
In contrast, pharmacological inhibition and RNA interference of MMP-2 attenuated angiotensin II-induced hypertension, without influencing development of cardiac hypertrophy or fibrosis.
Downstream of MMP-7 and TACE (ADAM17) , MMP-2 mediated angiotensin II-induced hypertension, but did not mediate cardiac hypertrophy or fibrosis. This suggests a functional specialization of MMP-2 in agonist-induced cardiovascular disease development that has potential implications for the design of metalloproteinase-based therapeutic strategies.
Comment in
- Matrix metalloproteinases activities in hypertension: emerging opportunities. [Hypertension. 2011]
- PMID:
- 21079048
- [PubMed - indexed for MEDLINE]
- Free full text
- Muistiin 21.4. 2014
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