In addition to their well-established self-renewal and multipotent differentiation properties, mesenchymal stem cells (MSCs) also possess potent immunomodulatory functions both in vitro and in vivo, which render them a potential novel immunotherapeutic tool for a variety of autoimmune and inflammation-related diseases. The major mechanisms may involve (1) the secretion of an array of soluble factors such as prostaglandin E2 (PGE2 ), indoleamine 2, 3-dioxygenase (IDO), transforming growth factor-β (TGF-β), and human leukocyte antigen G5 (HLA-G5); (2) interactions between MSCs and immune cells such as T cells, B cells, macrophages, and dendritic cells. Recently, increasing evidence has supported that MSCs derived from dental tissues are promising alternative sources of multipotent MSCs. We here provide a thorough and extensive review about new findings in the immunomodulatory functions of MSCs derived from several dental tissues, including dental pulp, periodontal ligament, gingiva, exfoliated deciduous teeth, apical papilla, and dental follicle, respectively. The immunomodulatory properties of dental MSCs place them as a more accessible cell source than bone marrow-derived MSCs for cell-based therapy of immune and inflammation-related diseases.
The magnification and angulation methods were not reliable methods for locating the impacted canine with a single panoramic radiograph. Magnification was more successful than the angulation method. Further research is needed on the magnification method. The image superimposition method could be used as an adjunct to others.
Background Oral fluconazole is used to treat vulvovaginal candidiasis during pregnancy. However, there are concerns regarding the pregnancy outcomes following exposure to fluconazole.Objectives To evaluate the pregnancy outcomes associated with exposure to oral fluconazole during the first trimester of pregnancy.Search strategy A systematic literature search was conducted to identify relevant studies published from inception until April 2019.Selection criteria Relevant English-language citations using the terms oral fluconazole and pregnancy in humans.Data collection Two reviewers independently abstracted data and assessed study quality.Main results Oral fluconazole use during the first trimester of pregnancy was marginally associated with an increased risk of congenital malformations (odds ratio [OR] 1.09, 95% CI 0.99-1.2, P = 0.088; n = 6 studies), whereas in the subgroup analysis, this association existed only for high-dose users (>150 mg) (OR 1. 19, 95% CI 1.01-1.4, P = 0.039; n = 2). Exposure to fluconazole also increased the risk of heart malformations (OR 1.31, 95% CI 1.09-1.57, P = 0.003; n = 4), cardiac septal defects (OR 1.3, 95% CI 1.1-1.67, P = 0.047; n = 3), and tetralogy of Fallot (OR 3.39 95% CI 1.71-6.74, P < 0.001; n = 2) in the offspring. In addition, exposure to fluconazole was significantly associated with an increased risk of spontaneous abortion (OR 1.99, 95% CI 1.38-2.88, P < 0.001; n = 3).Conclusions Oral fluconazole use during the first trimester of pregnancy appears to be associated with heart malformations and spontaneous abortion, but a causal link cannot be proven.Tweetable abstract Oral fluconazole during the first trimester of pregnancy may be associated with unfavourable pregnancy outcomes.
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