Abstract:
OBJECTIVES:Pancreatic stellate cells (PSCs) play a crucial role during pancreatic fibrosis development. Hydrogen sulfide (H2S) is a recently discovered gaseous transmitter, whose role in PSCs has not been explored yet. In the present study, we examined the effects of sodium hydrosulfide (NaHS), an H2S donor, on rat PSCs and elucidated the mechanisms involved. METHODS:Primary PSCs were isolated from rat pancreatic tissue. Lactate dehydrogenase and caspase assays were performed to detect cell death. Pancreatic stellate cell proliferation was determined by cell count analyses, bromodeoxyuridine incorporation, and flow cytometry. The role of heme oxygenase-1 (HO-1) was assessed by pharmacological HO inhibition and transfection of HO-1 small interfering RNA. Pancreatic stellate cell migration was determined by a wound healing assay, and PSC contraction was assessed by a gel contraction assay. α-Smooth muscle actin, collagen type I, and fibronectin messenger RNAs were analyzed by real-time polymerase chain reaction. RESULTS:NaHS inhibited PSC proliferation at nontoxic concentrations. This was associated with HO-1-mediated repression of extracellular signal-regulated kinase 1/2 signaling. NaHS suppressed PSC migration and activation as well as extracellular matrix synthesis. CONCLUSIONS:The results of the present study indicate that NaHS inhibits key cell functions of PSCs. Administration of H(2)S-releasing compounds might represent a novel strategy in the treatment of pancreatic fibrosis.
journal_name
Pancreasjournal_title
Pancreasauthors
Schwer CI,Stoll P,Goebel U,Buerkle H,Hoetzel A,Schmidt Rdoi
10.1097/MPA.0b013e318223645bsubject
Has Abstractpub_date
2012-01-01 00:00:00pages
74-83issue
1eissn
0885-3177issn
1536-4828journal_volume
41pub_type
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