Browsing by Author "Montoya, Margarita"

Now showing items 1-3 of 3

    • Copper modifies liver microsomal UDP-glucuronyltransferase activity through different and opposite mechanisms 
      Letelier Muñoz, María Eugenia; Lagos, Fernando; Faúndez, Mario; Miranda, Dante; Montoya, Margarita; Aracena Parks, Paula; González Lira, Víctor (ELSEVIER IRELAND LTD, 2007-04)
      Treatment of hepatic microsomes with Fe3+/ascorbate activates UDP-glucuronyltransferase (UGT), a phenomenon totally prevented and reversed by reducing agents. At #2;M concentrations, iron and copper ions catalyze the ...
    • DPPH and oxygen free radicals as pro-oxidant of biomolecules 
      Letelier Muñoz, María Eugenia; Molina Berríos, Alfredo Enrique; Cortés Troncoso, Juan; Jara Sandoval, José; Holst, Marianne; Palma, Karina; Montoya, Margarita; Miranda, Dante; González Lira, Víctor (PERGAMON-ELSEVIER SCIENCE LTD, 2008-03)
      Numerous investigations exist about the alterations that oxygen free radicals can provoke on biomolecules; these modifications can be prevented and/or reversed by different antioxidants agents. On the other hand, ...
    • Polymyxin B increases the depletion of T regulatory cell induced by purinergic agonist 
      Cappelli, Claudio; López Cortés, Ximena; Labra, Yohana; Montoya, Margarita; Fernández, Ricardo; Imarai, Mónica; Rojas, Juan Luis; Miranda, Dante; Escobar Alvarez, Alejandro; Acuña Castillo, Claudio (Elsevier, 2012)
      Regulatory T cells (Treg) are important in the development of immune tolerance under normal physiological conditions. However, in pathological situations such as cancer, Treg increases have been correlated with bad ...