Oral Diseases (2012) 19, 85–91 Objective: To analyze the expression and distribution patterns of mature dendritic cells (mDCs) and immature DCs (imDCs) in radicular cysts (RCs), dentigerous cysts (DtCs), and keratocystic odontogenic tumors (KCOTs). Materials and methods: Forty‐nine odontogenic cystic lesions (OCLs) (RCs, n = 20; DtCs, n = 15; KCOTs, n = 14) were assessed using the following markers: S100, CD1a and CD207 for imDCs; and CD83 for mDCs. Results: Almost all cases were S100, CD1a, and CD207 positive, whereas 63% were CD83 positive. RCs presented greater number of immunostained cells, followed by DtCs, and KCOTs. The number of S100+ cells was greater than both CD1a+ and CD207+ cells (P < 0.001), which showed approximately similar amounts, followed by lower number of CD83+ cells (P < 0.001) in each OCL type. Different from S100+ cells, both CD1a+ and CD207+ cells on the epithelium (P < 0.05) and CD83+ cells on the capsule (P < 0.05) were preferentially observed. In RCs, significant correlation was found between the thickness epithelium with S100+ and CD1a+ cells, and between the degree of inflammation with CD83+ cells. Conclusions: Dendritic cell populations in OCLs can be phenotypically heterogeneous, and it could represent distinct lineages and/or functional stages. It is suggested that besides DC‐mediated immune cell interactions, DC‐mediated tissue differentiation and maintenance in OCLs should also be considered.
Initial research on SARS-COV 2 (Severe Acute Respiratory Syndrome Coronavirus 2) appeared to demonstrate that children infected with the virus remained asymptomatic or had only mild to moderate conditions. The most common symptoms were fever and cough. However, in a later phase of the pandemic, numerous other aspects of clinical presentation in the pediatric public were observed, especially gastrointestinal conditions. In the present study, patients monitored at the Pediatric Intensive Care Unit of the Hospital Estadual Adão Pereira Nunes from April 17, 2020 until June 17, 2020, who had detectable PCR-RT (Polymerase Chain Reaction -Trasncriptase) or positive serology for COVID 19 (Coronavirus disease 19). This is a hospital unit that is not a reference for COVID 19, and its target audience is trauma victims.The initial symptoms of most hospitalized patients with clinical suspicion were fever and gastrointestinal symptoms, with significant abdominal pain standing out, mimicking acute abdomen. Signs and symptoms that differ from adults, who have respiratory manifestations as a starting point. Based on the recognition of the different clinical presentations of SARS-COV 2 in the pediatric population, an early diagnosis is possible, with better conduction and outcome.
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