Rosacea

Tetracyclines have long been used to treat a wide variety of medical conditions, especially in the field of dermatology. Unfortunately, safety concerns, especially gastrointestinal (GI), have always been present. Other safety concerns have included tooth development in children, candidiasis, vestibular concerns, photosensitivity/phototoxicity, and more unusual adverse effects such as uncontrolled hypertension. This article first discusses the pharmacological development of the tetracyclines from the first to the second generation versions with an emphasis on the safety concerns, especially with regards to doxycycline hyclate (DH). Second, the adverse effects of the tetracyclines are discussed. Third, the favorable side effect profile of DH delayed release capsules (Doryx) is compared with DH powder contained in tablets (Vibramycin). Fourth, the increased use with a continued favorable safety profile is also discussed concerning the subantimicrobial dosing of DH for acne. Fifth, the saf...

J Eur Acad Dermatol Venereol. 2009 Jun 1; Misery L, Boussetta S, Shooneman P, Taieb CAbstract Background The dermatological becoming of children presenting with atopic dermatitis (AD) is not well known. Objective We performed a study on the presence of AD and other dermatological diseases in subjects with a previous history of AD. Methods An opinion poll was conducted in eight countries through a telephone interview: Belgium, France, Germany, Greece, Italy, Portugal, Spain and Switzerland. Results Among 4369 interviewees, 12.25% declared a history of AD in infancy and 12.4% declared to suffer from a dermatological disease (27% of patients had a history of AD and 10.3% did not have it). Current declared cases of atopic eczema or contact eczema were more frequent in patients with previous history of AD (39.3% vs. 21.5%), whereas these patients appeared less affected by rosacea (2.9% vs. 7.9%). Some differences were observed between different countries. Conclusion The main interests of t...

Antimicrobial peptides or proteins (AMPs) represent an ancient and efficient innate defense mechanism which protects interfaces from infection with pathogenic microorganisms. In human skin AMPs are produced mainly by keratinocytes, neutrophils, sebocytes or sweat glands and are either expressed constitutively or after an inflammatory stimulus. In several human skin diseases there is an inverse correlation between severity of the disease and the level of AMP production. Skin lesions of patients with atopic dermatitis show a diminished expression of the beta-defensins and the cathelicidin LL-37. Furthermore, these patients have a reduced amount of the AMP dermcidin in their sweat which correlates with an impaired innate defense of human skin in vivo. In addition, decreased levels of AMPs are associated with burns and chronic wounds. In contrast, overexpression of AMPs can lead to increased protection against skin infections as seen in patients with psoriasis and rosacea, inflammatory ski...

A woman with psoriasis vulgaris and psoriatic arthritis developed granulomatous rosacea after four weeks of therapy with etanercept. When this agent was stopped, her skin lesions rapidly resolved with topical therapy, suggesting a causal relationship between the skin lesions and drug intake. To the best of our knowledge, this is the first report on rosacea as granulomatous cutaneous adverse drug reaction caused by etanercept. No relapse of skin changes appeared under extended and successful anti-psoriatic therapy with infliximab. "A case of granulomatous rosacea coinciding with the use of etanercept: no relapse with infliximab" Winter UM, Treudler R, Paasch U, Sticherling M, Simon JC Hautarzt. 2008 Sep ; 59(9): 724-7 (Hubmed.org) Highlight : Treatment Of Rosacea | Acne Rosacea Antibiotic | Acne Rosacea | Rosacea Creams

Int J Antimicrob Agents. 2009 Jun 11; Rubinchik E, Dugourd D, Algara T, Pasetka C, Friedland HDOmiganan pentahydrochloride is a novel, synthetic, cationic, antimicrobial peptide that is being developed for the prevention of catheter-related infections and the treatment of acne and rosacea. In this study, the efficacy of topical omiganan gel was evaluated in two skin colonisation models (ex vivo pig skin and in vivo guinea pig skin). When tested in the ex vivo pig skin colonisation model, omiganan 0.1-2% gels exhibited potent dose-dependent activity against Gram-positive and Gram-negative bacteria and yeasts; the maximum effect was observed at 1-2%. No significant difference was noted in activity toward meticillin-resistant and meticillin-sensitive Staphylococcus aureus, and drug activity was not affected by the inoculum size. The antimicrobial activity of omiganan 1% gel was rapid, with a 2.7log(10)colony-forming unit (CFU)/site reduction in Staphylococcus epidermidis counts at 1h pos...

Sebaceous gland diseases are a group of common dermatological diseases with multiple causes. To date, a systematic report of the risk factors for sebaceous gland diseases in adolescents has not been published. The aim of this study was to assess the prevalence and risk factors for certain sebaceous gland diseases (seborrhea, seborrheic dermatitis, acne, androgenetic alopecia and rosacea ) and their relationship to gastrointestinal dysfunction in adolescents. From August-October, 2002-2005, a questionnaire survey was carried out to obtain epidemiological data about sebaceous gland diseases. Using random cluster sampling, 13 215 Han adolescents aged 12-20 years were recruited from four countries or districts (Macau; Guangzhou, China; Malaysia; and Indonesia). The statistical software SPSS ver. 13.0 was used to analyze the data. The prevalence of seborrhea, seborrheic dermatitis, acne, androgenetic alopecia and rosacea was 28.27%, 10.17%, 51.03%, 1.65% and 0.97%, respectively. Based on m...