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Page 10
October 07-08, 2019 | Madrid, Spain
Volume 3
Journal of Clinical Microbiology and Infectious diseases
MICROBIOLOGY AND MICROBIOLOGISTS
MYCOLOGY AND FUNGAL INFECTIONS
2 nd Annual Congress on
6th International Conference on
&
J Clin Microbiol Infect Dis, Volume 3
Microbiology 2019 & Fungal infections 2019
October 07-08, 2019
Candida-associated gastric ulcer until yesterday, today and from tomorrow
Candida-associated gastric ulcer occurs not only in debilitated but healthy individuals. Though had been reported to
demonstrate nothing but nonspecific endoscopic features, it occasionally exhibits a typical finding the author designated a
candidarium. The natural history of the disease had not been clarified and the recurrence had not been described: the fungus had
been reported to become undetectable once the ulcers were healed. However, the author demonstrated that the ulcer not only
occurs but also recurs in a different site with a different shape in a non-diabetic,Helicobacter pylori-negative patient, who has not
been given non-steroidal anti-inflammatory drugs, antibiotics, antineoplastic agents, or systemic corticosteroids, advocating that,
contrary to the prevailing opinion,Candida (C.) is no innocuous bystander but an etiologic perpetrator: intragastric inoculation
of C. albicans causes epithelial necrosis through activation of IL-23/IL-17 pathway in mice. In the oropharyngeal field, the
fungus has recently been shown to secrete a cytolytic pore-forming toxin (PFT), candidalysin, into a pocket in the epithelium
after penetrating into it to activate mitogen-activated protein kinase (MAPK)/MAPK phosphatase 1 (MKP1)/c-Fos pathway,
triggering release of damage as well as immune cytokines. While candidalysin, exerting an effect even on the adjacent cells,
directly injures the tissue with damage cytokines, immune counterparts activate polymorphonuclear leukocytes to eventually
terminate inflammation. Though the epithelial response to the fungus is different from organ to organ, it invades into and induces
necrotic cellular damage to the intestinal mucosa through the toxin to translocate: the action of candidalysin is proven not only on
the stratified squamous mucosa but on the single layer of the columnar epithelium. Since, by analogy with intestinal candidiasis,
it is never difficult to speculate that the PFT inflicts such damage to the gastric mucosa, a theoretically strong possibility has
come up that Candida-associated gastric ulcer is actually Candida-induced ulcer.
Biography
Kenji Sasaki received his MD in 1973 and PhD in 1977 from Tohoku University. He is a JGES Board Certified Fellow and Preceptor, JSGE
Board Certified Gastroenterologist, JSIM Board Certified Member and CRIM Editorial Board Member. He has given presentations at inter-
national congresses and published papers on gastroenterology in international journals. Acclaimed by Prof Tarnawski at DDW 2012, he
published his article “Candida-associated gastric ulcer relapsing in a different position in a different appearance.” in World J Gastroenterol
2012 Aug 28; 18 (32): 4450-4453, which was featured in the section of Infection and Immunity of World Biomedical Frontiers in September,
2013 and recommended by an associate research scientist on PubAdvanced in December, 2013. Invited to participate in a special issue, he
published a review article “Candida-associated gastric ulcer until yesterday, today, and from tomorrow --- In quest of the etiology” in SciTz
Gynecol Reprod Med 2017; 1(1): 1002.
Kenji Sasaki
Midtown Medicare Clinic, Japan