Results: 46

Impact of Aggregatibacter actinomycetemcomitans on epithelial repair: in vitro study in wound model

Braz. j. oral sci; 23 (), 2024
Normal wound healing occurs in four overlapping stages - hemostasis, inflammation, proliferation, and remodeling. In the oral cavity, these processes occur in an infectious environment. Among the pathogens found in the oral community, Aggregatibacter actinomycetemcomitans (Aa) constitutes a well-recogniz...

Immunofluorescent distribution of SIRT1, SIRT2, SIRT6 protein in the skin of SKH1 mouse after ultraviolet B irradiation for 10 Weeks

Int. j. morphol; 40 (6), 2022
SUMMARY: The skin, located on the outermost part of the body, is always exposed to external stimuli such as sunlight. The exposure of skin to ultraviolet B (UVB) radiation from sunlight is known to be a major environmental factor in inducing photoaging. After exposure to UVB, an increase in reactive oxyg...

Proteomic analysis of human keratinocytes under UVA-induced stress

The solar ultraviolet (UV) radiation that reaches the Earth is composed of 95% of UVA (320 to 400 nm) and 5% of UVB (280 to 320 nm) radiation. UVB is carcinogenic, generating potentially mutagenic DNA lesions. The solar UVA radiation also causes DNA damage, but this fact does not fully account for its bi...

Walnut ointment promotes full-thickness burning wound healing: role of linoleic acid

Acta cir. bras; 37 (9), 2022
Purpose: To investigate the active ingredients of walnut ointment (WO) and its mechanism in repairing wounds. Methods: The ingredients of WO were detected by gas chromatography–mass spectrometry. The effect of linoleic acid (LA) was tested by in vitro Alamar Blue (AB) reagent. Image J software, histol...

Differential Regulation of Integrin α5 and β4 in Normal and Psoriatic Epidermal Keratinocytes

Abstract Psoriasis is a chronic skin inflammation, characterized by impaired differentiation, hyperproliferation of keratinocytes involving pro-inflammatory factors interleukin (IL)-13/17A, tumor necrosis factor (TNF)-α, interferon (IFN)-γ. Among the integrin family, α5 is important for blood vessel ...

Pagetoid dyskeratosis in dermatopathology

An. bras. dermatol; 96 (4), 2021
Abstract Currently, pagetoid dyskeratosis is believed to involve an accelerated keratinization process, possibly induced by mechanical trauma. It represents, in almost its totality, incidental histological findings of specific cells, except when it occurs in the hands, where it usually occurs simultaneou...

A proline derivative-enriched methanol fraction from Sideroxylon obtusifolium leaves (MFSOL) stimulates human keratinocyte cells and exerts a healing effect in a burn wound model

Braz. j. med. biol. res; 54 (9), 2021
It was previously demonstrated that the methanol fraction of Sideroxylon obtusifolium (MFSOL) promoted anti-inflammatory and healing activity in excisional wounds. Thus, the present work investigated the healing effects of MFSOL on human keratinocyte cells (HaCaT) and experimental burn model injuries. Ha...

Molecular mechanisms in the process of re-epithelization in wound healing and the action of honey in keratinocytes

Int. j. morphol; 38 (6), 2020
SUMMARY: The treatment of chronic wounds has become a public health issue in recent years mainly due to comorbidities associated with an older population and bacterial resistance. Honey has emerged as an alternative treatment for chronic wounds but lack of knowledge of its mechanism of actionin the treat...

Estudio del efecto citotóxico e irritativo de jabones para la limpieza cutánea

Gac. méd. Méx; 156 (5), 2020
Resumen Introducción: El jabón para el aseo cutáneo es de empleo común entre la población, sin embargo, es posible que cause daño a las células de la piel y modifique la barrera cutánea. Objetivo: Determinar el efecto citotóxico de los jabones en queratinocitos cultivados in vitro y correlacio...