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Effects of Cerebrolysin on in vitro primary microglial and astrocyte rat cell cultures.

In recent years the potential use of neurotrophic factors in the prevention and/or treatment of neurodegenerative diseases has received much attention. To determine whether Cerebrolysin, a porcine brain-derived peptide preparation, was able to modulate in vitro lipopolysaccharide (LPS)-induced microglial activation and to test the direct effect of Cerebrolysin on astrocyte morphology, survival and proliferation, rat glial and astrocyte cell culture experiments were carried out. The morphology of microglia, ameboid/activated and flat/resting, was examined under contrast microscopy and cell counts obtained. In addition, the release of interleukin (IL)-1 beta and brain-derived neurotrophic factor (BDNF) was measured from cell culture supernatant using an enzyme-linked-immunoassay (ELISA). The results obtained in this study clearly suggest a protective effect of Cerebrolysin as revealed by downregulation of microglial activation after LPS treatment as well as by the control of IL-1 beta expression. No significant differences were observed on astrocyte morphology, survival or the production and/or release of BDNF. In conclusion, these in vitro studies indicate that Cerebrolysin might exert a neuroimmunotrophic function which can in turn reduce the extent of inflammation and accelerate neuronal death under pathological conditions such as human neurodegenerative disorders.