BDNF and brain ischemia: Expression of a neurotrophin family protein, pro-NGF, was also significantly reduced in IVH (−0.72, 0.72; p ≤ 0.02), asphyxia (−0.72, 0.4; p ≤ 0.03), and cerebral ischemia (−1.13, 0.23; p ≤ 0.003).