Marcela Hernández

Learn More
Neutrophil collagenase or collagenase-2 (matrix metalloproteinase [MMP]-8) belongs to the collagenase subgroup of the MMP superfamily of calcium- and zinc-dependent neutral proteinases. MMP-8 is catalytically the most competent proteinase to initiate type I collagen and extracellular matrix degradation associated with periodontal and peri-implant tissue(More)
Periodontal diseases usually refer to common inflammatory disorders known as gingivitis and periodontitis, which are caused by a pathogenic microbiota in the subgingival biofilm, including Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Tannerella forsythia and Treponema denticola that trigger innate, inflammatory, and adaptive immune(More)
The wetlands of the Qinghai-Tibetan Plateau are believed to play an important role in global nutrient cycling, but the composition and diversity of microorganisms in this ecosystem are poorly characterized. An understanding of the effects of geography and microtopography on microbial populations will provide clues to the underlying mechanisms that structure(More)
Oxidative stress and matrix metalloproteinases -9 and -2 are involved in periodontal breakdown, whereas gingival crevicular fluid has been reported to reflect apical status. The aim of this study was to characterize oxidant balance and activity levels of MMP -2 and -9 in apical lesions and healthy periodontal ligament; and second, to determine whether(More)
OBJECTIVE Disruption of TCF7L2 in mouse pancreatic β-cells has generated different outcomes in several investigations. Here we aim to clarify role of β-cell TCF7L2 and Wnt signaling using a functional-knockdown approach. METHODS Adenovirus-mediated dominant negative TCF7L2 (TCF7L2DN) expression was conducted in Ins-1 cells. The fusion gene in which(More)
Recommended Citation Attathom, Tipapat. "Effect of ethanol-wet bonding to caries affected dentin. __________________________________ Fang Qian ii To my dad, my mom and my brother, for always be there for me and love me. iii ACKNOWLEDGMENTS I would like to thank Dr. Steven R. Armstrong for being such a dedicated mentor. You inspired me to strive for(More)
The aim of this study was to evaluate the impact of computer-assisted learning on first-year dental students' waxing abilities and self-evaluation skills. Additionally, this study sought to determine how well digital evaluation software performed compared to faculty grading with respect to students' technical scores on a practical competency examination.(More)
  • Laurie St-Pierre, LAURIE ST-PIERRE, +4 authors Fang Qian
  • 2016
Effect of finishing and polishing direction on the marginal adaptation of resin-based composite restorations in vitro." ii To my fiance, Éric, for his unconditional support and love despite the distance To my parents for layering the foundation of determination and for their encouragements To my mentors, for their help, support and willingness to teach(More)