N_Products

Neurotrophin 4 (NTF4), also known as NT5, is a member of the NGF family of neuronal and epithelial growth factors. Neurotrophins have six conserved cysteine residues that are involved in the formation of three disulfide bonds. Human NT4 shares 48 - 52% amino acid sequence identity with human β-NGF, BDNF and NT3. It shares 91% and 95% amino acid sequence identity with mouse and rat NT4/5, respectively. The protein is secreted as a homodimer and can also form heterodimers with BDNF or NT3. NT4 binds and induces receptor dimerization and activation of TrkB and promotes the development and survival of selected peripheral and CNS neurons. NT4 induced TrkB signaling augments NMDA receptor activity and increases neuronal sensitivity to excitotoxic cell death. NT4 is secreted by activated T cells and granulocytes and contributes to tissue regeneration at inflammation sites.

Nystatin is a fungicidal and fungistatic polyene antifungal targeting Candida species, especially those responsible for vaginal infections. It functions by inhibiting ergosterol synthesis and increasing cell membrane permeability, ultimately leading to fungal cell death. Nystatin has been used in combination with erythromycin and streptomycin in cell culture to eliminate fungal contamination.