References of "Szepetiuk, Gregory"
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See detailAutoimmunity-related granulomatous dermatitis in association with hepatitis.
Szepetiuk, Gregory; Lesuisse, Marianne; PIERARD, Gérald ULg et al

in Case Reports in Dermatology (2012), 4(1), 80-4

AIM: Both interstitial granulomatous dermatitis (IGD) and palisaded neutrophilic granulomatous dermatitis (PNGD) are rare disorders typically associated with systemic autoimmune conditions. They probably ... [more ▼]

AIM: Both interstitial granulomatous dermatitis (IGD) and palisaded neutrophilic granulomatous dermatitis (PNGD) are rare disorders typically associated with systemic autoimmune conditions. They probably represent different aspects of a disease spectrum encompassing the concept of autoimmunity-related granulomatous dermatitis (ARGD). CASE REPORT: A 61-year-old woman presented with ARGD and autoimmune hepatitis. The clinical presentation suggested PNGD, while histopathology was consistent with IGD. DISCUSSION: The association of ARGD with autoimmune hepatitis is apparently a rare event. The present case shows that the clinicopathological correlation in ARGD does not always clearly fit with the classical presentations of IGD or PNGD. [less ▲]

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See detailHypomelanosis of Ito: pigmentary mosaicism with immature melanosome in keratinocytes.
Devillers, Céline; QUATRESOOZ, Pascale ULg; Hermanns-Lê, Trinh ULg et al

in International Journal of Dermatology (2011), 50(10), 1234-9

BACKGROUND: Hypomelanosis of Ito is a rare genetic disorder characterized by whorled areas of hypomelanosis. The purpose of the present study was to revisit some aspects of Ito's hypomelanosis. METHODS ... [more ▼]

BACKGROUND: Hypomelanosis of Ito is a rare genetic disorder characterized by whorled areas of hypomelanosis. The purpose of the present study was to revisit some aspects of Ito's hypomelanosis. METHODS: Clinical observations included ultraviolet-light-enhanced visualization (ULEV) method. Histochemistry, immunohistochemistry, and electron microscopy were performed on biopsy samples from the hypopigmented areas and the surrounding skin. RESULTS: Both the ULEV and microscopic examinations revealed the heterogeneity of the pigmentation. Hypomelanosis was characterized by a reduction in melanosomes, both in melanocytes and keratinocytes. These organelles were immature and atypical, showing a weak tyrosinase immunoreactivity. Melanosome macroautophagy was prominent in keratinocytes. Some clusters of the same cells exhibited strong immunoreactivity for the Mac 387 antibody (Ca(2+) -dependent calprotectin). Ulex europaeus agglutinin-1 (UEA-1) decorated the superficial layers of the epidermis. Such features are typically found in functionally altered keratinocytes. A number of dermal cells exhibited intense phagocytic activity linked to lysozyme immunoreactivity. CONCLUSIONS: Both the melanosome depletion and macroautophagy of immature melanosomes in keratinocytes appeared to represent prominent aspects of hypomelanosis of Ito. In sum, Ito's hypomelanosis combines structural and functional changes affecting both the melanocytes and keratinocytes in the skin. [less ▲]

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See detailL'image du mois. Necrobiose lipoidique.
Szepetiuk, Gregory; FRANCHIMONT, Claudine ULg; REGINSTER, Marie-Annick ULg et al

in Revue Médicale de Liège (2011), 66(2), 61-3

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See detailRecent trends in specular light reflectance beyond clinical fluorescence diagnosis.
Szepetiuk, Gregory; Pierard, Sébastien ULg; PIERARD-FRANCHIMONT, Claudine ULg et al

in European Journal of Dermatology (2011), 21(2), 157-61

Under specific light illumination, particularly ultraviolet (UV) and near-UV light stimulation, the skin produces both specular light reflectance and, possibly, specific fluorescent emission. These ... [more ▼]

Under specific light illumination, particularly ultraviolet (UV) and near-UV light stimulation, the skin produces both specular light reflectance and, possibly, specific fluorescent emission. These properties offer diagnostic clues and disclose some peculiar functions of the skin. A series of superficial infections (erythrasma, some tinea capitis types, tinea/pityriasis versicolor, dermatophytoses, etc.) and pilosebaceous follicles enriched in Propionibacterium spp show fluorescence. This latter characteristic is downgraded or lost while on some anti-acne treatments. A quenching effect of fluorescence is observed following the application of sunscreens. The (pre)neoplastic areas prepared for methylaminolevulinate photodynamic therapy (MAL-PDT) show reddish fluorescence following drug metabolisation producing porphyrins by the abnormal activated cells. Of note, when using a recording sensitive CCD camera instead of casual visual observation, skin fluorescence may be superimposed on the specular reflectance of the incident light. With the current technology, these situations are not distinguished with confidence. Any harsh and scaly lesion appears brighter following yellowish specular light reflectance. Stratum corneum samplings collected on clear self-adhesive discs or cyanoacrylate skin surface strippings are conveniently examined ex vivo, taking advantage of the same optical properties. [less ▲]

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See detailL'image du mois. Acanthosis nigricans juvenile.
Szepetiuk, Grégory; Letot, Bernard ULg; Hermanns-Lê, Trinh ULg et al

in Revue Médicale de Liège (2007), 62(4), 181-3

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See detailTour d'horizon des dermatoses prurigineuses chez la femme enceinte.
Szepetiuk, Grégory; Melotte, Chantal ULg; Pierard, Claudine ULg et al

in Revue Médicale de Liège (2007), 62(12), 719-24

Any pruritus occurring in pregnant women may represent a sensorial manifestation unrelated to pregnancy, but it may represent the consequence of a pregnancy-specific dermatosis. This latter group ... [more ▼]

Any pruritus occurring in pregnant women may represent a sensorial manifestation unrelated to pregnancy, but it may represent the consequence of a pregnancy-specific dermatosis. This latter group encompass pruritus gravidarum with or without intrahepatic cholestasis, pemphigoid gestationis, polymorphic eruption of pregnancy, prurigo gestationis, acute folliculitis of pregnancy, impetigo herpetiformis and the progesterone auto-immune dermatitis. Fetal risk of morbidity is recognized for pruritus gravidarum with intrahepatic cholestasis, pemphigoid gestationis and impetigo herpetiformis. [less ▲]

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See detailComparative study of the efficacy of fusidic acid and povidone iodine in childhood impetigo.
Szepetiuk, Gregory; Henry, Frédérique ULg; Pierard, Gérald ULg

in Journal of Pediatric Infectious Diseases (2006), 1

Impetigo is a superficial bacterial infection of the skin. It is a contagious condition particularly affecting children. In many instances, a topical antibacterial treatment is recommended to clear the ... [more ▼]

Impetigo is a superficial bacterial infection of the skin. It is a contagious condition particularly affecting children. In many instances, a topical antibacterial treatment is recommended to clear the disease. Topical antibiotics and antiseptics can be used, but the risk for antibiotic-induced bacterial resistance of the community-acquired type has been pointed out. The present study was undertaken as a randomized intraindividual comparative trial between fusidic acid (FA) cream and povidone iodine (PVP-I) gel in 40 children suffering from impetigo. Cultures revealed Staphylococcus aureus in the vast majority of the cases. The lesions present on each upper limb were treated twice daily with one or the other test formulation. Clinical assessments were performed twice weekly until cure. After one week, cure was obtained in 57.5% of the PVP-I-treated limbs compared to 32.5% of the FA-treated limbs. At the end of treatment cure was obtained first on the PVP-I treated sites in 67.5% of cases compared to 15% on the FA-treated sites. Clinical cure occurred simultaneously on both test sites in 17.5% of cases. In conclusion, PVP-I provided faster clinical cure than FA. Considering the treatment cost, the raising community-acquired staphylococci resistance to FA, and the results of the present study, PVP-I gel appears superior to FA cream in childhood impetigo. [less ▲]

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