Le professeur Louis Dubertret, ex-président de la fondation René Touraine, nous explique les fausses opinions qu’accompagnent souvent un individu atteint par la maladie.
Le psoriasis est-il contagieux ?
Non. Vous pouvez, par exemple, aller à la piscine avec du psoriasis sans aucun risque. Au contraire, la peau psoriasique, avec ses plaques, contient bien plus de molécules anti-infectieuses qu’une peau normale. Il s’agit donc d’une peau qui s’infecte beaucoup moins qu’une autre.
Le psoriasis est-il héréditaire ?
Ce question est récurrente car le psoriasis a une origine génétique. Cependant, cette transmission se réalise non pas de manière mathématique ou monogénique, mais bien comme un "terrain" favorable aux membres d’une même famille. De la même manière qu’une mère atteinte régulièrement de rhumes des foins a des enfants qui présentent le risque de le développer, un parent atteint de psoriasis aura des enfants risquant de developper cette pathologie plus que la moyenne. Cette inquiétude se retrouve souvent chez un futur parent souffrant de psoriasis sévère. Mais il faut savoir que dans ce cas-là, le mélange de ses gènes avec ceux de l’autre parent ne peut, au pire, qu’entraîner un psoriasis plus modéré chez l’enfant. Aussi, le développement de traitements de plus en plus efficaces doit nous faire sortir de la vision du psoriasis comme une malédiction transmise de génération en génération.
Si mon traitement ne me convient pas, dois-je changer de médecin ?
En raison de ses symptômes variables pour chaque individu, le psoriasis fait partie de ces maladies où le patient dispose d’informations précieuses sur sa condition que le médecin ne peut connaître. De ce fait, le patient doit les lui communiquer régulièrement afin de bénéficier d’un ajustement continu de son traitement permettant de l’améliorer dans le temps. Changer perpétuellement de médecin est donc une erreur puisque cela compromet l’efficacité des soins. Il vaut donc mieux avoir la patience d’expliquer à son médecin de départ les causes de son insatisfaction afin que ce dernier, essai après essai, trouve le traitement idéal. Cela est d’autant plus important qu’aucun médecin ne peut tout savoir, surtout dans le cas d’une maladie s’exprimant différemment chez chaque personne.
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Recent publications on Psoriasis and Atopic Dermatitis
on Psoriasis
In vitro evaluation of Naltrexone HCl 1% Topical Cream in XemaTop™ for psoriasis.
Ip K et al.
In vitro evaluation of Naltrexone HCl 1% Topical Cream in XemaTop™ for psoriasis.
Arch. Dermatol. Res..
2020 Mar , 312, (2):145-154.
Psoriasis is a multifactorial skin disease involving abnormal cell proliferation and inflammation; an efficacious topical treatment is yet to be identified. A formulation containing 1% Naltrexone HCl in XemaTop™ base was compounded, characterized and evaluated in vitro as a possible treatment for psoriasis. A three-dimensional psoriasis tissue model was exposed to the formulation for 2 or 5 days and analyzed for the level of markers of cellular proliferation, and inflammatory cytokine IL-6. (...)
see on pubmed
Hydrogen peroxide in neutrophil inflammation: Lesson from the zebrafish.
Martínez-Navarro FJ et al.
Hydrogen peroxide in neutrophil inflammation: Lesson from the zebrafish.
Dev. Comp. Immunol..
2020 Apr , 105:103583.
The zebrafish has become an excellent model for the study of inflammation and immunity. Its unique advantages for in vivo imaging and gene and drug screening have allowed the visualization of dual oxidase 1 (Duox1)-derived hydrogen peroxide (HO) tissue gradients and its crosstalk with neutrophil infiltration to inflamed tissue. Thus, it has been shown that HO directly recruits neutrophils via the Src-family tyrosine kinase Lyn and indirectly by the activation of several signaling pathways (...)
see on pubmed
IL-36α contributes to enhanced T helper 17 type responses in allergic rhinitis.
Qin X et al.
IL-36α contributes to enhanced T helper 17 type responses in allergic rhinitis.
Cytokine.
2020 Apr , 128:154992.
T helper 17 (Th17) cell subsets, belongs to CD4+ T cell lineage, are proved to be closely related to pathophysiology of AR recently. The interleukin-36 (IL-36) had been reported to promote the up-regulation of Th17 cytokines in psoriasis. We investigated the regulation of Th17 inflammation by IL-36 family cytokines in allergic rhinitis (AR).
see on pubmed
on Atopic Dermatitis
Atopic dermatitis induces anxiety- and depressive-like behaviors with concomitant neuronal adaptations in brain reward circuits in mice.
Prog. Neuropsychopharmacol. Biol. Psychiatry.
2020 Mar 02, 98:109818.
Clinically, it has been reported that atopic dermatitis (AD) has been linked with negative emotional problems such as depression and anxiety, thereby reducing the quality of life, but little is known about the molecular mechanism that underlies AD-associated emotional impairments. We sought to determine whether AD could induce anxiety- and depressive-like symptoms in mice and to identify pertinent signaling changes in brain reward circuitry. AD-like lesions were induced by the repeated (...)
see on pubmed
Efficacy and safety of indigo naturalis ointment in Treating Atopic Dermatitis: A randomized clinical trial.
J Ethnopharmacol.
2020 Mar 25, 250:112477.
Indigo naturalis, a herbal medicine with a history of use dating back to ancient times, may be a good alternative topical treatment for atopic dermatitis (AD).
see on pubmed
"Eczema" of the nape: A marker of pthiriasis capitis.
Veraldi S et al.
"Eczema" of the nape: A marker of pthiriasis capitis.
Parasitol. Int..
2020 Apr , 75:102026.
Pthirus pubis usually infests the pubis, inguinal folds, buttocks and perianal region. In hairy males or when the infestation is longstanding, this louse can also occur on the thighs, abdomen, chest, axillae and beard. Eyelashes may be involved in children. The involvement of the scalp is very rare. We describe four girls with P. pubis infestation located exclusively on the scalp which was characterized by a rash on the nape that can suggest a head and neck form of atopic (...)
see on pubmed
