Current Issues of Pharmacy and Medical Sciences

Effect of supernatants from Lactobacillus acidophilus culture on ATP levels in human gingival fibroblasts

Current Issues in Pharmacy and Medical Sciences Vol. 26, No. 2, Pages 140-143

Effect of supernatants from Lactobacillus acidophilus culture on ATP levels in human gingival fibroblasts


Department of Conservative Dentistry and Periodontology, University of Medical Sciences in Poznań, Poland

DOI: 10.12923/j.2084-980X/26.2/a.04



Bacteria of Lactobacillus genus comprise around 1% of physiological flora in oral cavity. Despite numerous studies on Lactobacillus bacteria, their interaction with cells of host’s oral cavity has not been fully recognized.
Studies were performed on effects of super natants obtained from bacterial cultures of Lactobacillus acidophilus strains on ATP levels in human gingival fibroblasts (HGF-1) and on their viability. ATP levels were evaluated using luminescence test and cell viability was estimated using a fluorescence test.
Mean levels of ATP in cultures of control fibroblasts, HGF-1, supplemented with 10% PBS amounted to 4.90 ± 0.32 mln of RLU (rela tive light units). In turn, mean level of ATP in cul tures of HGF-1 fibroblasts supplemented with supernatants of H2O2-producing L. acidophilus cultures amounted to 5.94 ± 0.31 mln of RLU, and in the cul tures sup ple mented with su per natants of L. acidophilus producing no H2O2 it amounted to 5.88 ± 0.28 mln of RLU. The lev els of ATP ob tained in HGF-1 cultures with supernatants of L. acidophilus were significantly higher than those in control cultures. On the other hand, ATP levels in HGF-1 cultures with supernatants of H2O2-producing L. acidophilus cultures and with supernatants of H2O2-not producing L. acidophilus cultures showed no significant differences.
The presented for the first time in this study increase in ATP synthesis in gingival fibroblasts under effect of extracellular products of L. acidophilus cultures may represent an important protective mechanism in which oral lactobacilli influence human gingival fibroblasts.

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Lactobacillus acidophilus, ATP, human gingival fibroblasts, microbial products


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