Standardized arrabidaea chica extract shows cytoprotective effects in zoledronic acid-treated fibroblasts and osteoblasts

Patricia Maria Wiziack Zago, Ilza Maria Oliveira Sousa, Leila Servat-Medina, Michelle Pedroza Jorge, Lidio Gonçalves Lima Neto, Viviane Hass, Xin Li, Ana Lucia Tasca Gois Ruiz, Deepak Saxena, Mary Ann Foglio

Research output: Contribution to journalArticlepeer-review


Introduction: Osteonecrosis of the jaw is a condition associated with intraoral ulceration and bone necrosis induced by antiresorptive medications, such as zoledronic acid, a bisphosphonate. Previous data on Arrabidaea chica (H&B.) Verlot wound healing activity prompted the study reported herein on A. chica standardized hydro alcoholic extract in vitro cytoprotective activity data on epithelial and osteoblastic cells exposed to zoledronic acid (ZA). Methods: Primary human gingival fibroblasts and murine pre-osteoblasts were treated with ZA 10 µM together with 5 or 10 µg.mL−1 A. chica extract for 24h and 48 h. At both times, cells were submitted to viability assay and caspase 3/7 activation evaluation. Statistical analysis used one-way ANOVA and p=0.05. Results: In cell viability assay, a drastic damage effect of ZA appeared after 48 h in both epithelial (55.8%) and pre-osteoblastic cells (39.7%). When treated with ZA in combination with A. chica extract, cells showed higher viability values: 74.1%–82.3% for fibroblasts and 66% for pre-osteoblasts. Furthermore, the combined treatment presented lower caspase 3/7 activation in fibroblasts and pre-osteoblasts. Conclusion: At low concentrations, A. chica extract showed promising cytoprotective effects against ZA-induced damage actions; however, further in vitro and in vivo studies are required to establish the mechanism of action.

Original languageEnglish (US)
Pages (from-to)327-333
Number of pages7
JournalClinical, Cosmetic and Investigational Dentistry
StatePublished - 2020


  • Arrabidaea chica
  • Epithelial cells
  • Fibroblasts
  • Osteoblasts
  • Zoledronic acid

ASJC Scopus subject areas

  • General Dentistry


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