Rosacea

Our study evaluated the expression of vascular endothelial growth factor (VEGF), CD31 and D2-40 in involved and uninvolved skin of 18 patients with rosacea . METHODS: Immunostaining of facial skin specimens with VEGF, CD31 and D2-40 was compared between the lesional and the non-lesional skin of patients with erythemotelangiectatic and papulopustular rosacea . RESULTS: Significantly increased dermal expression of VEGF in lesional vs. non-lesional skin (88.9% and 55.6%) was observed. Dermal expression of CD31 and D2-40 was also increased in lesional vs. non-lesional skin. There was no statistically significant difference in cutaneous expression of VEGF, CD31 and D2-40 between patients with papulopustular and erythemotelangiectatic rosacea , and no correlation was found between disease duration and immunoreactivity of VEGF, CD31or D2-40. CONCLUSIONS: Our study showed marked immunostaining of lesional skin with VEGF, CD31 and D2-40 compared with non-lesional skin. Increased immunoreactivit...

Demodicidosis may present as pityriasis folliculitis, papulopustular lesions, rosacea -like eruptions , and granulomatous rosacea -like eruptions. We report a case of demodex granuloma presenting with recurrent granulomatous rosacea -like papules on the face in a middle-aged woman. The diagnosis of demodicidosis was made by finding extrafollicular mites in the perifollicular inflammatory infiltrate. The papules resolved after 3 weeks of systemic and topical metronidazole, and low-dose oral prednisolone therapy. In summary, demodex granuloma may be mistaken for granulomatous rosacea -like papules. Correct diagnosis can be facilitated by finding extrafollicular demodex mites in skin biopsy specimens. "Granulomatous rosacea -like demodicidosis" Lee JY, Hsu CK Dermatol Online J. 2007; 13(4): 9 (Hubmed.org) Highlight : Treatment Of Rosacea | Acne Rosacea Antibiotic | Acne Rosacea | Rosacea Creams

Although patients with rosacea often complain of increased skin sensitivity, there has been no quantitative sensory testing of this phenomenon. Furthermore, cutaneous blood flow in these patients has not been assessed using state-of-the-art laser Doppler imaging (LDI). OBJECTIVES: To assess heat pain thresholds and skin blood flow using quantitative thermal sensory testing and LDI in patients with untreated rosacea . METHODS: Of the total 24 subjects enrolled, 8 had papulopustular rosacea (PPR), 8 had erythematotelangiectatic rosacea (ETR) and 8 were control subjects. Subjective burning perception, heat pain threshold, skin blood flow, and skin temperature was assessed in all subjects. In the ETR and PPR groups, two areas were compared: affected and nonaffected. RESULTS: Heat pain thresholds of areas affected by rosacea were lower than those of nonaffected areas. In addition, subjective burning perception was increased in rosacea patients when compared with control subjects. Altho...

Skin is a multilayered organ which covers and protects the surface of human body by providing a barrier function against exogenous agents. Meanwhile, the efficacy of several topically applicated drugs is directly related to their penetration through the skin barrier. Several techniques are commonly used to evaluate the rate, the speed and the depth of penetration of these drugs, but few of them can provide real-time results. Therefore, the use of nondestructive and structurally informative techniques permits a real breakthrough in the investigations on skin penetration at a microscopic scale. Confocal Raman microspectroscopy is a nondestructive and rapid technique which allows information to be obtained from deep layers under the skin surface, giving the possibility of a real-time tracking of the drug in the skin layers. The specific Raman signature of the drug enables its identification in the skin. In this study, we try to follow the penetration of Metronidazole, a drug produced by G...

A number of dermatology conditions including skin photodamage, atopic dermatitis, and rosacea involve skin barrier impairment and first line therapies for these conditions including retinoids and steroids further impair skin barrier function. We have evaluated the compatibility of myristyl nicotinate, an agent that enhances skin barrier function, with drugs used to treat conditions where skin barrier impairment is present including photodamage (retinoic acid), atopic dermatitis (hydrocortisone, triamcinolone acetonide), rosacea (metronidazole) , and seborrheic dermatitis (ketoconazole). Myristyl nicotinate was found to be compatible with each of the drugs examined when formulated together and also was shown to be photocompatible with retinoic acid. Our results suggest that the combination of myristyl nicotinate with these drugs is a feasible therapeutic development strategy. "Formulation compatibility of myristyl nicotinate with drugs used to treat dermatological conditions invo...

Many patients with rosacea are unable to tolerate extended treatment periods with topical agents because of the unusually high skin sensitivity that often accompanies rosacea . Kinetin (N(6)-furfuryladenine) is a plant cytokinin that reportedly helps restore skin barrier function and may be useful to ameliorate the signs and symptoms of rosacea . The purpose of this open-label study was to determine the tolerance and efficacy of twice-daily application of kinetin 0.1% lotion for improving the signs and symptoms of mild to moderate facial rosacea . Subjects applied kinetin 0.1% lotion twice daily to the face, with daily use of a sunscreen of sun protection factor 30. Subjects were evaluated at baseline and at 4-week intervals for 12 weeks to assess efficacy and tolerance. Results of this study suggest that kinetin 0.1% lotion is a well-tolerated moisturizing lotion option for subjects with mild to moderate inflammatory rosacea . "Topical kinetin 0.1% lotion for improving the sign...

Propionibacterium acnes is an anaerobic bacterium that plays an important role in the pathogenesis of acne. Certain antibiotics that can inhibit P acnes colonization also have demonstrated anti-inflammatory activities in the treatment of acne, rosacea , and other noninfectious diseases. Decreased sensitivity of P acnes to antibiotics, such as erythromycin and tetracycline, has developed and may be associated with therapeutic failure. Benzoyl peroxide (BPO) is a nonantibiotic antibacterial agent that is highly effective against P acnes and for which no resistance against it has been detected to date. Retinoids are important components in combination therapy for acne, including use with antibiotics, and can serve as an alternative to these agents in maintenance therapy. By increasing our understanding of the multifaceted actions of antibiotics and the known clinical implications of antibiotic resistance, physicians can improve their decision making in prescribing these agents. "Clin...