Type 2 innate lymphoid cells (ILC2s, nuocytes, NHC) require RORA and GATA3 for their development. We show that human ILC2s express skin homing receptors and infiltrate the skin after allergen challenge, where they produce the type 2 cytokines IL-5 and IL-13. Skin-derived ILC2s express the IL-33 receptor ST2, which is up-regulated during activation, and are enriched in lesional skin biopsies fro...

Exposure to ultraviolet (UV) light reduces levels of type I collagen in the dermis and results in human skin damage and premature skin aging (photoaging). This leads to a wrinkled appearance through the inhibition of transforming growth factor‑β (TGF‑β)/Smad signaling. UV irradiation increases type I collagen degradation through upregulating matrix metalloproteinase (MMP) expression. Astragalos...

OBJECTIVE(S) Skin extracellular matrix, which contains type I and type III collagens, is involved in skin development. The aim of this study was to investigate type III collagen distribution pattern as well as its changes during pre and post-natal skin morphogenesis in rats. MATERIALS AND METHODS Ventral skins of Wistar rat embryos at different stages from 10 to 20 gestational day (E10-E20) a...

BACKGROUND Leprosy, a chronic granulomatous disease affecting the skin and nerves, is caused by Mycobacterium leprae (M. leprae). The type of leprosy developed depends upon the host immune response. Type 1 reactions (T1Rs), that complicate borderline and lepromatous leprosy, are due to an increase in cell-mediated immunity and manifest as nerve damage and skin inflammation. Owing to the increas...

www.aafp.org/afp AMERICAN FAMILY PHYSICIAN 621 patient, such as allergen avoidance, medications, and, sometimes, immunotherapy (Table 2). For example, a patient with a specific pollen allergy may be instructed to increase medication use during the pollen season. Patients with an animal allergy may be instructed to use allergy or asthma medication before exposure. There are several types of spec...

The aim of the present study was to provide reliable experimental evidence for the application of autologous skin fibroblasts (asFbs) in the repair of depressed scars. In the experiments, depressed trauma was induced in male Wistar rats, and fibroblasts were separated from the removed skin tissues to culture in medium. In vitro cultured asFbs were injected into the depressed scar sites of rats,...

Skin tests were made with Type I S.S.S. in 53 cases of Type I pneumococcus lobar pneumonia, 48 of which were treated with antipneumococcus Type I serum. In all but 1 of the 46 recovered cases a positive, immediate skin reaction was obtained at about the time of recovery. In 7 fatal cases reactions were consistently negative, even in the presence of circulating type-specific antibodies. The skin...

Polydactyly is a common hereditary disorder in which extra or vestigial digits are present on the one or both sides of the extremities. It is ten times more frequent in Blacks than in Whites. Polydactyly occurs both in a sporadic form and in a hereditary form. In polydactyly type A, the extra digits contains phalanges, in polydactyly type B, there is no skeletal structure. The extra digit is ma...

appears on the skin. We separated lymphocytes from the inflamed skin of NC/ Nga mice using collagenase I (Sigma-Aldrich) and counted the numbers of nuocytes (ST21/Sca-11/lineage marker-negative) by FACS. Results: (1) The reactions were hapten specific. Wild-type BALB/c mice showed both immediate and delayed-type reactions, whereas ST2 KO mice did not show any immediate reaction. (2) When IL-33 ...