Mini-mélanome papulo-achromique de croissance rapide.

in Dermatologie Actualité (2009), 114

Fungal chitin-glucan scaffold for managing diabetic xerosis of the feet in menopausal women.

in Expert Opinion on Pharmacotherapy (2009), 10(14), 2221-9

BACKGROUND: Corneocyte accumulation (hyperkeratosis, xerosis) commonly occurs in the stratum corneum (SC) of the feet of diabetic patients, as well as menopausal women. OBJECTIVE: To compare the effects ... [more ▼]

BACKGROUND: Corneocyte accumulation (hyperkeratosis, xerosis) commonly occurs in the stratum corneum (SC) of the feet of diabetic patients, as well as menopausal women. OBJECTIVE: To compare the effects of a 2.5% chitin-glucan formulation with its placebo, and commercially available glycerol formulations. METHODS: This two-step controlled double-blind, randomized, intra-individual study was performed in 30 type 1 and 2 diabetic menopausal women suffering from xerosis of the feet. The formulations were applied once daily for 3 weeks. Electrometric assessments were performed on three sites of the feet at entry in the study, at weekly intervals during the treatment phase, and in a 2-week follow-up out of treatment. Positive controls consisted in two commercially available formulations enriched in glycerol. RESULTS: Data revealed an unequivocal benefit provided by the 2.5% chitin-glucan formulation compared with placebo. The electrometric values were significantly higher at each evaluation time during both treatment and follow-up phases. The two glycerol-enriched formulations showed slightly different kinetics of SC moisturization. A steep increase was followed by a plateau level and a rapid decline after stopping the treatments. CONCLUSION: The increased moisturization of the SC of the sole probably improves the desquamation process and reduces xerosis of the soles. [less ▲]

Fondements de la cosmétovigilance sur le mode européen.

in Skin (2009), 12

Emerging therapies for ionizing radiation-associated skin field carcinogenesis.

in Expert Opinion on Pharmacotherapy (2009), 10(5), 813-21

BACKGROUND: Radiodermatitis in its acute and chronic presentations represents a set of specific adverse effects resulting from ionizing radiations. Skin-field cancerization is another condition associated ... [more ▼]

BACKGROUND: Radiodermatitis in its acute and chronic presentations represents a set of specific adverse effects resulting from ionizing radiations. Skin-field cancerization is another condition associated to or independent of clinically recognizable radiodermatitis. This condition leads to the risk of later occurrence of skin malignancies. METHOD: Review of the current and most pertinent peer-reviewed publications with the addition of personal perspectives. RESULT/CONCLUSION: The presence of field cancerization encompasses subclinical changes, precursors of malignant alterations, as well as single or multiple primary neoplasms and local neoplastic recurrences. These tumours commonly require repeated treatments over time and cause significant morbidity. In general, specific tumour-directed treatments using ablative or destructive techniques require regular follow-up and screening for disclosing any further neoplasm. Another strategy corresponding to field-directed treatment targets a larger area of irradiated skin to reduce the risk of developing second neoplasms and local recurrences. Imiquimod is an immune response modifier of the imidazoquinoline class. It is the archetype drug used to control skin-field carcinogenesis. Cryotherapy, topical 5-fluorouracil, diclofenac and conventional photodynamic therapy are supposed to bring effects differing by their indications, healing rates and remission rates. The possibility of inducting a radiation recall dermatitis by some of these therapeutic modalities has not been thoroughly evaluated, and at present cannot be ruled out with confidence. [less ▲]

Skin homing of Treponema pallidum in early syphilis: an immunohistochemical study.

in Applied Immunohistochemistry & Molecular Morphology (2009), 17(1), 47-50

The incidence of syphilis is increasing in most parts of the world including some major European cities. The lesions developing during secondary syphilis may be difficult to diagnose clinically. Similarly ... [more ▼]

The incidence of syphilis is increasing in most parts of the world including some major European cities. The lesions developing during secondary syphilis may be difficult to diagnose clinically. Similarly, the histopathologic changes do not always fulfill the typical diagnostic criteria. The objective of this study was to assess the contribution of immunohistochemistry for the identification and localization of Treponema pallidum on the skin. We retrieved from our files 12 paraffin-embedded biopsies of skin lesions, which had posed diagnostic problems in the past. Only a serologic test had proven that the patients had syphilis. Controls consisted of lichenoid dermatoses unrelated to syphilis and borreliosis. Immunohistochemistry using an antispirochete (T. pallidum and Borrelia) antibody was performed retrospectively. In all samples from primary and secondary syphilis, T. pallidum was highlighted, but none of the control lesions unrelated to syphilis showed positivity. Interestingly enough, T. pallidum present in the lower mid-part of the epidermis often outnumbered that in the dermis. This difference was more striking in secondary syphilis compared with primary syphilis. Immunohistochemistry for T. pallidum considerably increased the sensitivity and the specificity of the histologic diagnosis. The strong epidermal homing of T. pallidum is highlighted in early syphilis. [less ▲]

Le cas clinique du mois. Erytheme polymorphe sur infection a Mycoplasma

in Revue Médicale de Liège (2008), 63(1), 6-10

Erythema multiforme (EM) is an immune-mediated disease categorized into EM minor and EM major, also called Stevens-Johnson syndrome (SJS), not to be confused with toxic epidermal necrosis (TEN), as ... [more ▼]

Erythema multiforme (EM) is an immune-mediated disease categorized into EM minor and EM major, also called Stevens-Johnson syndrome (SJS), not to be confused with toxic epidermal necrosis (TEN), as physiopathological pathways are throughly different. Mycoplasma pneumoniae is an intracellular germ, generally responsible for atypical respiratory infections. It may be associated with erythema multiforme, eventually recurrent, illustrated by the present case report. [less ▲]

Molecular mapping of Factor XIIIa-enriched dendrocytes in the skin (Review).

in International Journal of Molecular Medicine (2008), 22(4), 403-9

The human dermis contains a series of dendritic cells which express different phenotypes including Factor XIIIa immunoreactivity. This compound is related to a blood coagulation factor participating in ... [more ▼]

The human dermis contains a series of dendritic cells which express different phenotypes including Factor XIIIa immunoreactivity. This compound is related to a blood coagulation factor participating in angiogenesis, in the final stages of the clotting cascade and in wound healing. In normal skin, Factor XIIIa is expressed in specific dermal dendrocytes (DD) derived from the monocyte/macrophage lineage or from a mesenchymal origin. DD are located predominantly around the microvasculature in the adventitial dermis, at the dermo-epidermal junction, and around skin appendages, but normally not within the epidermis. Increased numbers of Factor XIIIa+ DD are present in a host of specific cutaneous inflammatory and fibrotic conditions. In tumor pathology, immunophenotypic differences are found between dermatofibromas and other fibrohistiocytic entities, most notably dermatofibrosarcoma protuberans. In addition, Factor XIIIa+ DD are likely to be involved in the progression and regression of some malignancies including cutaneous melanoma and basal cell carcinoma. [less ▲]

Hedgehog ringworm in humans and a dog.

in Acta Clinica Belgica (2008), 64

Established and emerging oral antifungals in dermatology

in Dermatologic, cosmeceutic and cosmetic development (2008)

Highlighting the immunohistochemical profile of melanocytomas

Poster (2008)