AIM: To investigate the effect of stem cells from human exfoliated deciduous teeth(SHED) transplanted for bone regeneration in the dog mandibular ***: In this prospective comparative study, SHEDs had been isolated 5 y...
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AIM: To investigate the effect of stem cells from human exfoliated deciduous teeth(SHED) transplanted for bone regeneration in the dog mandibular ***: In this prospective comparative study, SHEDs had been isolated 5 years ago from human exfoliated deciduous teeth. The undifferentiated stem cells were seeded into mandibular bone through-andthrough defects of 4 dogs. Similar defects in control group were filled with cell-free collagen scaffold. After 12 wk, biopsies were taken and morphometric analysis was performed. The percentage of new bone formation and foreign body reaction were measured in each case. The data were subject to statistical analysis using the Mann-Whitney U and Kruskalwalis statistical tests. Differences at P < 0.05 was considered as significant ***: There were no significant differences between control and SHED-seeded groups in connective tissue(P = 0.248), woven bone(P = 0.248) and compact bone(P = 0.082). There were not any side effects in transplanted SHED group such as teratoma or malignancy and abnormalities in this ***: SHEDs which had been isolated and characterized 5 years ago and stored with cryopreservation banking were capable of proliferation and osteogenesis after 5 years, and no immune response was observed after three months of seeded SHEDs.
SARS-CoV-2 infection is benign in most individuals but,in-10%of cases,it triggers hypoxemic COVID-19 pneumonia,which becomes critical in-3%of *** ensuing risk of death(-1%)doubles every five years from childhood onwar...
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SARS-CoV-2 infection is benign in most individuals but,in-10%of cases,it triggers hypoxemic COVID-19 pneumonia,which becomes critical in-3%of *** ensuing risk of death(-1%)doubles every five years from childhood onward and is-1.5 times greater in men than in *** are the molecular and cellular determinants of critical COVID-19 pneumonia?Inborn errors of type I IFNs,including autosomal TLR3 and X-linked TLR7 deficiencies,are found in-1-5%of patients with critical pneumonia under 60 years old.
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