id author title date pages extension mime words sentences flesch summary cache txt cord-303022-9hqoq7tf Madapusi Balaji, Thodur Oral cancer and periodontal disease increase the risk of COVID 19? A mechanism mediated through furin and cathepsin overexpression 2020-06-01 .txt text/plain 888 54 47 In addition to furin, another protease cathepsin L is also elevated in chronic periodontitis and oral cancer, which in turn could be a result of the interleukin 6 mediated activation of the caveolin -1 mediated JNK-AP-1 signaling pathway [8] [9] [10] . 3) Following binding of the S1 subunit to the ACE-2 receptors, the virus fuses with the host cell in two mechanisms: (a) endosomal fusion which is mediated by cysteine proteases cathepsin B/L and (b) plasma membrane fusion mediated by the serine protease TMPRSS2. Based on the above-mentioned data, it can be hypothesized that the increased protease levels in chronic periodontitis and oral cancer could potentially increase the risk of an oral mucosa mediated SARS-corona virus-2 infection (figure 1). In addition to increasing proteases, chronic periodontitis, and oral cancer patients have also reported having a low melatonin level [14, 15] . ./cache/cord-303022-9hqoq7tf.txt ./txt/cord-303022-9hqoq7tf.txt