text: Our results support the hypothesis that during the phase of neointimal growth of SMCs in the first days following injury, NGF secretion and TrkA activity prevail, whereas successively, during the remodeling phase characterized from the progressive reduction of proliferation and the increased level of apoptosis, quiescent intimal SMCs produce more sortilin and proNGF and less TrkA in an autocrine loop
  PLOS ONE | www.plosone.org 7 January 2014 | Volume 9 | Issue 1 | e84969
  regulating SMC survival and counteracting excessive intimal hyperplasia following injury [28].