Research Article

Protective Effects of Adiponectin against Cobalt Chloride-Induced Apoptosis of Smooth Muscle Cells via cAMP/PKA Pathway

Figure 4

APN protected against the CoCl2 reduction of cAMP and PKA. (a) CoCl2-induced reduction of the cAMP levels was attenuated by APN. (b) CoCl2-induced reduction of the PKA activity was attenuated by APN. (c) PKA downregulation by CoCl2 was blocked by APN. (d) Statistical analysis of the PKA expression. (e) Expression and location of PKA (green) in the SMCs. Blue indicates nuclei as stained by DAPI. Scale bar: 25 μm ( vs. control, # vs. CoCl2 treatment, , data shown as the ). CoCl2: cobalt chloride; APN: adiponectin; cAMP: cyclic adenosine monophosphate; PKA: protein kinase A.
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