Interaction of beta-lactam antibiotics with the mitochondrial carnitine/acylcarnitine transporter (Articolo in rivista)

Type
Label
  • Interaction of beta-lactam antibiotics with the mitochondrial carnitine/acylcarnitine transporter (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.cbi.2008.03.003 (literal)
Alternative label
  • Lorena Pochini (a); Michele Galluccio (a); Domenica Scumaci (a); Nicola Giangregorio (b,c); Annamaria Tonazzi (b, c); Ferdinando Palmieri (b,c); Cesare Indiveri (a) (2008)
    Interaction of beta-lactam antibiotics with the mitochondrial carnitine/acylcarnitine transporter
    in Chemico-biological interactions (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Lorena Pochini (a); Michele Galluccio (a); Domenica Scumaci (a); Nicola Giangregorio (b,c); Annamaria Tonazzi (b, c); Ferdinando Palmieri (b,c); Cesare Indiveri (a) (literal)
Pagina inizio
  • 187 (literal)
Pagina fine
  • 194 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 173 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 3 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Department of Cell Biology, University of Calabria, Via P.Bucci 4c, 87036 Arcavacata di Rende, Italy b Department of Pharmaco-Biology, Laboratory of Biochemistry and Molecular Biology, University of Bari, via Orabona 4, 70125 Bari, Italy c CNR Institute of Biomembranes and Bioenergetics, via Amendola 165/A, 70126 Bari, Italy (literal)
Titolo
  • Interaction of beta-lactam antibiotics with the mitochondrial carnitine/acylcarnitine transporter (literal)
Abstract
  • The interaction of beta-lactams with the purified mitochondrial carnitine/acylcarnitine transporter reconstituted in liposomes has been studied. Cefonicid, cefazolin, cephalotin, ampicillin, piperacillin externally added to the proteoliposomes, inhibited the carnitine/carnitine antiport catalysed by the reconstituted transporter. The most effective inhibitors were cefonicid and ampicillin with IC(50) of 6.8 and 7.6mM, respectively. The other inhibitors exhibited IC(50) values above 36mM. Kinetic analysis performed with cefonicid and ampicillin revealed that the inhibition is completely competitive, i.e., the inhibitors interact with the substrate binding site. The Ki of the transporter is 4.9mM for cefonicid and 9.9mM for ampicillin. Cefonicid inhibited the transporter also on its internal side. The IC(50) was 12.9mM indicating that the inhibition was less pronounced than on the external side. Ampicillin and the other inhibitors were much less effective on the internal side. The beta-lactams were not transported by the carnitine/acylcarnitine transporter. Cephalosporins, and at much lower extent penicillins, caused irreversible inhibition of the transporter after p (literal)
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