Androgens activate lipogenesis through an AKT-independent mTOR pathway stimulation and a limitation of autophagy in an androgen-sensitive sebocyte cell line.

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Androgens are key regulators of sebaceous function... A link between mTOR and androgen signaling has previously been reported...as well as a link between these processes and lipid synthesis...Here we aimed at confirming that DHT-induced lipid synthesis/accumulation is at least in part dependent on mTOR activation in the SEBO662AR cell line and that the autophagic process is consequently modified by the androgenic treatment.
Dog Skin - Epidermal Cornification Proteins

Refined Immunochemical Characterization in Healthy Dog Skin of the Epidermal Cornification Proteins, Filaggrin, and Corneodesmosin

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Filaggrin (FLG) and corneodesmosin (CDSN) are two key proteins of the human epidermis.

Oncostatin M is overexpressed in skin squamous-cell carcinoma and promotes tumor progression

Cutaneous squamous cell carcinoma (cSCC) is the second most common keratinocyte malignancy and accounts for 20% of skin cancer deaths.

Pseudomonas aeruginosa flagellum is critical for invasion, cutaneous persistence and induction of inflammatory response of skin epidermis

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Pseudomonas aeruginosa, an opportunistic pathogen involved in skin and lung diseases, possesses numerous virulence factors, including type 2 and 3 secretion systems (T2SS and T3SS) and its flagellum, whose functions remain poorly known during cutaneous infection.

Anti-inflammatory activity of CKC-containing cationic emulsion eye drop vehicles

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Preservative-free cationic emulsion-based artificial tears (ATs) or drug vehicles are innovative eye drop formulations with tear film stabilization and drug delivery properties, and valuable in vivo anti-inflammatory and wound healing properties.
Tg2576 Alzheimer

Cerebrovascular β-amyloid deposition and associated microhemorrhages in a Tg2576 Alzheimer mouse model are reduced with a DHA-enriched diet

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Cerebral amyloid angiopathy (CAA) is a major contributor to Alzheimer's disease (AD) pathogenesis.

New Biological Activities of Lythrum salicaria L.

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The perennial and widespread herb Lythrum salicaria L., also called purple loosestrife, is a plant that is traditionally used in European medicine.
lipid

Effects of different kinds of pollutants on the lipidic metabolism of human sebocytes and protective effects of a new macroalgae culture extract

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Sebocytes lipid production are stimulated by pollutants. Ame acts by protecting epidermal cells, human sebocytes and skin from urban dust.
Différents stades d’acné vulgaris

Acné vulgaris : Origines, symptômes et traitements actuels

L’acné vulgaris est une maladie inflammatoire chronique cutanée qui touche la plupart des adolescents et concerne plus de la moitié des consultations en dermatologie. Cette pathologie, caractérisée par une hypersécrétion de sébum peut être à l’origine de complications d’ordre physique pouvant également entraîner un certain mal-être psychologique.

Acné vulgaris : Physiopathologie et mécanismes cellulaires

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L’acné vulgaris est une pathologie inflammatoire chronique cutanée localisée au niveau du follicule pilo-sébacé. Elle apparaît suite à une surproduction de sébum liée à des dysfonctionnements d’origine hormonale (androgène), environnementale (pollution…) et à la colonisation du follicule pilo-sébacé par certaines bactéries (P. acnes). (Dans ce contexte), QIMA Life Sciences a développé un panel de tests originaux destinés à la découverte et l’évaluation de composés pour le traitement de l’acné.
glande sébacée

La glande sébacée : Physiologie et fonctions

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La glande sébacée est un organe localisé au niveau du derme. Elle est responsable de la synthèse et de la sécrétion du sébum qui entre dans la composition du film hydrolipidique. Le rôle du sébum est de protéger la peau des agressions extérieures et de la déshydratation. Le sébum permet également d’entretenir la souplesse de la peau et des cheveux.

Interleukin-17A-induced production of acute serum amyloid A by keratinocytes contributes to psoriasis pathogenesis

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Acute-serum Amyloid A (A-SAA), one of the major acute-phase proteins, is mainly produced in the liver but extra-hepatic synthesis involving the skin has been reported. Its expression is regulated by the transcription factors NF-κB, C/EBPβ, STAT3 activated by proinflammatory cytokines.

Development of a new model of reconstituted mouse epidermis and characterization of its response to proinflammatory cytokines

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The development of three-dimensional models of reconstituted mouse epidermis (RME) has been hampered by the difficulty to maintain murine primary keratinocyte cultures and to achieve a complete epidermal stratification. In this study, a new protocol is proposed for the rapid and convenient generation of RME,

Extraction d’ARN et contrôle qualité

Une extraction réalisée dans de bonnes conditions permettra d’obtenir des échantillons d’ARN de bonne qualité qui garantiront le succès des expériences en aval.

Le cheveu: follicule, structures associées et croissance

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Le follicule pileux est une annexe de la peau qui a la capacité de se renouveler de manière parfaitement autonome, cyclique et asynchrone. L'analyse histologique de l'unité pilo-sébacée révèle une organisation en deux compartiments: le compartiment d'origine épithélial et le compartiment d'origine mésenchymale.
hybridation in situ

hybridation in situ d’acides nucléiques

L’hybridation in situ est une technique qui permet de visualiser la présence d’ADN ou d’ARN spécifiques à l’intérieur d’une cellule ou d’un tissu. Le principe de cette technique est basé sur l’utilisation d'une sonde fluorescente correspondant à une séquence d’acide nucléique spécifique à un gène cible.
Adapalene and benzoyl peroxide

A skincare combined with combination of adapalene and benzoyl peroxide provides a significant adjunctive efficacy and local tolerance benefit in adult women with mild acne

Acne in adult women is an increasing reason for dermatological consultations.

New biological effects of Aphloïol

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In the present study, we identified new properties of Aphloïol (syn. mangiferin) in improving skin barrier function, especially by promoting keratinocyte differentiation, synthesis of transmembrane glycoprotein and lipid neosynthesis.
skin photoaging irradiations

in vitro modeling of skin photoaging: development of evaluation tools for cosmetics

Development of in vitro models skin for better understand the modifications during photo-aging induced by repetitive UV exposure.
skin photoaging irradiations

in vitro modeling of skin photoaging: development of evaluation tools for cosmetics

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Development of in vitro models skin for better understand the modifications during photo-aging induced by repetitive UV exposure.