title: Inhibition of rotavirus ECwt infection in ICR suckling mice by N-acetylcysteine, peroxisome proliferator-activated receptor gamma agonists and cyclooxygenase-2 inhibitors.
abstract: Live attenuated vaccines have recently been introduced for preventing rotavirus disease in children. However, alternative strategies for prevention and treatment of rotavirus infection are needed mainly in developing countries where low vaccine coverage occurs. In the present work, N-acetylcysteine (NAC), ascorbic acid (AA), some nonsteroidal anti-inflammatory drugs (NSAIDs) and peroxisome proliferator-activated receptor gamma (PPARγ) agonists were tested for their ability to interfere with rotavirus ECwt infectivity as detected by the percentage of viral antigen-positive cells of small intestinal villi isolated from ECwt-infected ICR mice. Administration of 6 mg NAC/kg every 8 h for three days following the first diarrhoeal episode reduced viral infectivity by about 90%. Administration of AA, ibuprofen, diclofenac, pioglitazone or rosiglitazone decreased viral infectivity by about 55%, 90%, 35%, 32% and 25%, respectively. ECwt infection of mice increased expression of cyclooxygenase-2, ERp57, Hsc70, NF-κB, Hsp70, protein disulphide isomerase (PDI) and PPARγ in intestinal villus cells. NAC treatment of ECwt-infected mice reduced Hsc70 and PDI expression to levels similar to those observed in villi from uninfected control mice. The present results suggest that the drugs tested in the present work could be assayed in preventing or treating rotaviral diarrhoea in children and young animals.
authors.forename: Carlos Arturo
authors.initials: CA
authors.lastname: Guerrero
authors.forename: Victor Rodriguez
authors.initials: VR
authors.lastname: Paula Pardo
authors.forename: Orlando Acosta
authors.initials: OA
authors.lastname: Rafael Guerrero
mesh_terms: D000111:Acetylcysteine / Q000494:pharmacology*; D000818:Animals; D000975:Antioxidants / Q000627:therapeutic use; D052246:Cyclooxygenase 2 Inhibitors / Q000494:pharmacology*; D016861:Cyclooxygenase Inhibitors / Q000627:therapeutic use; D003967:Diarrhea / Q000188:drug therapy* / Q000821:virology; D050883:HSC70 Heat-Shock Proteins / Q000378:metabolism; D018840:HSP70 Heat-Shock Proteins / Q000378:metabolism; D007422:Intestines / Q000821:virology; D051379:Mice; D008813:Mice, Inbred ICR; D016328:NF-kappa B / Q000378:metabolism; D047495:PPAR gamma / Q000819:agonists*; D019704:Protein Disulfide-Isomerases / Q000378:metabolism; D012401:Rotavirus; D012400:Rotavirus Infections / Q000188:drug therapy*
chemical_list: D000975:Antioxidants; D052246:Cyclooxygenase 2 Inhibitors; D016861:Cyclooxygenase Inhibitors; D050883:HSC70 Heat-Shock Proteins; D018840:HSP70 Heat-Shock Proteins; C494372:Hspa8 protein, mouse; D016328:NF-kappa B; D047495:PPAR gamma; C513195:Pdia3 protein, mouse; D019704:Protein Disulfide-Isomerases; D000111:Acetylcysteine
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