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Nerve Regeneration Potential of Protocatechuic Acid in RSC96 Schwann Cells by Induction of Cellular Proliferation and Migration through IGFR-PI3K-Akt Signaling.
This study investigated the molecular mechanisms by which PCA induces Schwann cell proliferation by activating IGFR-PI3K-Akt pathway. Treatment with PCA induces phosphorylation of the insulin-like growth factor-I (IGF-I)-mediated phosphatidylinositol 3 kinase/serine - threonine kinase (PI3K/Akt) pathway, and activates expression of cell nuclear antigen (PCNA) in a dose-dependent manner. Cell cycle analysis after 18 h of treatment showed that proliferation of the RSC96 cells was enhanced by PCA treatment. The PCA induced proliferation was accompanied by modulation in the expressions of cell cycle proteins cyclin D1, cyclin ...
Source: The Chinese Journal of Physiology - January 16, 2016 Category: Physiology Tags: Chin J Physiol Source Type: research

Protocatechuic Acid from Alpinia oxyphylla Induces Schwann Cell Migration via ERK1/2, JNK and p38 Activation.
This study investigated the role of PCA in promoting neural regeneration and the underlying molecular mechanisms. Nerve regeneration is a complex physiological response that takes place after injury. Schwann cells play a crucial role in the endogenous repair of peripheral nerves due to their ability to proliferate and migrate. The role of PCA in Schwann cell migration was determined by assessing the induced migration potential of RSC96 Schwann cells. PCA induced changes in the expression of proteins of three MAPK pathways, as determined using Western blot analysis. In order to determine the roles of MAPK (ERK1/2, JNK, and ...
Source: The American Journal of Chinese Medicine - June 28, 2015 Category: Complementary Medicine Authors: Ju DT, Kuo WW, Ho TJ, Paul CR, Kuo CH, Viswanadha VP, Lin CC, Chen YS, Chang YM, Huang CY Tags: Am J Chin Med Source Type: research

Extracts of Koelreuteria henryi Dummer induce apoptosis and autophagy by inhibiting dihydrodiol dehydrogenase, thus enhancing anticancer effects.
Abstract Dihydrodiol dehydrogenase (DDH) is frequently detected in cancer cells, and its overexpression correlates with drug resistance, the downregulation of DNA repair mechanisms, increased frequency of tumor recurrence, cancer cell metastasis and poor prognosis. The silencing of DDH expression using siRNA, on the other hand, reduces drug resistance and cancer cell mobility. These data suggest that DDH may be an oncogene-related protein. However, no specific DDH inhibitor has been identified to date. Thus, in this study, we used DDH as a target enzyme in a live-cell enzyme-linked immunosorbent assay to screen Ch...
Source: International Journal of Molecular Medicine - July 12, 2013 Category: Molecular Biology Authors: Chiang YY, Wang SL, Yang CL, Yang HY, Yang HC, Sudhakar JN, Lee CK, Huang HW, Chen CM, Chiou SH, Chiang SF, Fang HY, Chen CY, Shieh SH, Chow KC Tags: Int J Mol Med Source Type: research