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2016 ; 12
(Suppl 2
): S257-63
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The Inhibitory Effect of Rhein on Proliferation of High Glucose-induced Mesangial
Cell Through Cell Cycle Regulation and Induction of Cell Apoptosis
#MMPMID27279717
Xu S
; Lv Y
; Zhao J
; Wang J
; Wang G
; Wang S
Pharmacogn Mag
2016[May]; 12
(Suppl 2
): S257-63
PMID27279717
show ga
OBJECTIVES: Increased mesangial cell proliferation and accumulation of
extracellular matrix (ECM) are the major pathological features of early-stage
diabetic nephropathy. This study was sought to investigate the inhibitory effects
of rhein (RH) on high glucose (HG)-cultured mesangial cells. Specially, we focus
on the analysis of proliferation rate, cell cycle regulation, apoptosis, and the
expression of collagen IV and laminin. MATERIALS AND METHODS: The established rat
renal mesangial cell (RMC) line was cultured in medium with different
concentrations of glucose (5.6 mM or 25 mM) and RH (40 ?M, 20 ?M, and 10 ?M).
Pro-treated cells were collected at 12 h, 24 h, and 48 h for cell proliferation
analysis and after 24 h for the experiments of flow cytometry, transmission
electron microscope, real-time polymerase chain reaction, and Western blotting.
RESULTS: Our data shows HG can promote the proliferation of RMCs and RH has an
inhibitory effect on HG-induced RMC proliferation and expression of ECM. Based on
our data, we hypothesize this inhibitory effect might be a result of cell cycle
regulation and the induction of cellular apoptosis. CONCLUSION: RH can inhibit
cellular proliferation and downregulate the expression of ECM under the
circumstance of HG. The mechanism of growth suppression may be due to cell cycle
arrest at G1 phase, induction of cell apoptosis, and upregulation of apoptotic
mediators bax and caspase-3. SUMMARY: Rhein (RH) has an inhibitory effect on high
glucose.induced rat mesangial cells proliferationRH has an inhibitory effect on
the expression of extracellular matrixRH has a growth.suppression effectRH can
upregulate the expression of apoptotic mediators bax and caspase-3All above shows
RH is one of the main active ingredient in Shenkang injection. Abbreviations
used: RH: Rhein, ECM: Extracellular matrix, DN: Diabetic nephropathy, RMC: Renal
mesangial cell, SKI: Shenkang injection, MTT:
3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide.