|Year : 2005 | Volume
| Issue : 2 | Page : 91-95
Efficacy and safety of combination ointment "fluticasone propionate 0.005% plus mupirocin 2.0%" for the treatment of atopic dermatitis with clinical suspicion of secondary bacterial infection: An open label uncontrolled study
Kunal J Khobragade
Glaxo Smith Kline Pharmaceuticals Ltd., Mumbai, India
Kunal J Khobragade
Clinical Research and Medical Affairs, GlaxoSmithKline Pharmaceuticals Ltd. Dr. Annie Beasant Road, Worli, Mumbai - 400 030
Source of Support: None, Conflict of Interest: None
BACKGROUND: The skin of patients with atopic dermatitis is colonized with Staphylococcus aureus. Reduction of bacterial colonization has been reported to be effective in the treatment of atopic dermatitis. AIM: To assess the efficacy and safety of a combination of fluticasone propionate 0.005% and mupirocin 2.0% ointment twice daily for 2 weeks in patients with atopic dermatitis clinically suspected of secondary bacterial infection. METHODS: An open-label, non-randomized study of 122 patients (64 males and 58 females) from 20 centers was conducted. Atopic dermatitis was diagnosed by clinical assessment and scoring was done on the visual analogue scale (VAS). Clinical evaluation of the lesions was done on day 1 (baseline), day 8 and on day 15 of study visits. RESULTS: At baseline, many patients had moderate itching (41.8%), moderate dryness (41.8%) and mild weeping lesions (49.2%). The baseline proportions of the clinicians' global impressions (CGI) scale for mild, moderate and severe atopic dermatitis lesions were 19.7%, 55.7% and 12.2% respectively. At the end of the treatment period, 67.2% patients had mild disease, whereas only 9% and 0.8% patients had moderate and severe disease respectively. At baseline, only 33.65% patients were comfortable with the existing lesions when assessed on visual analog scale (VAS). However, after the treatment, this proportion increased to 51.77% and 78.60% patients on day 8 and on day 15 respectively. CONCLUSION: Twice daily topical application of a fluticasone propionate 0.005% and mupirocin 2.0% ointment is an effective and safe therapeutic regimen in atopic dermatitis.
Keywords: Superantigens, Staphylococcus aureus, Topical corticosteroid, Topical antibiotic
|How to cite this article:|
Khobragade KJ. Efficacy and safety of combination ointment "fluticasone propionate 0.005% plus mupirocin 2.0%" for the treatment of atopic dermatitis with clinical suspicion of secondary bacterial infection: An open label uncontrolled study. Indian J Dermatol Venereol Leprol 2005;71:91-5
|How to cite this URL:|
Khobragade KJ. Efficacy and safety of combination ointment "fluticasone propionate 0.005% plus mupirocin 2.0%" for the treatment of atopic dermatitis with clinical suspicion of secondary bacterial infection: An open label uncontrolled study. Indian J Dermatol Venereol Leprol [serial online] 2005 [cited 2015 May 25];71:91-5. Available from: http://www.ijdvl.com/text.asp?2005/71/2/91/13991
| Introduction|| |
Atopic dermatitis (AD) usually begins during childhood and can be a cause of significant emotional and financial impact on the families of the affected children. Currently, there is no standard therapeutic regimen for the long-term management of moderate to severe atopic dermatitis but most regimens include a topical steroid and an emollient.
The skin of 80-100% of patients with AD is colonized with Staphylococcus aureus. Staphylococcus aureus is able to secrete exotoxins with superantigenic properties. Superantigens are high molecular weight proteins produced by different bacteria (staphylococci, streptococci, yersinia, mycoplasma) and viruses. They are involved in the pathogenesis of diseases including food poisoning, psoriasis and septic shock. The staphylococcal enterotoxins A-D (SEA-D) and the toxic shock syndrome toxin-1 (TSST-1) are produced by Staphylococcus aureus spp. isolated from the skin of up to 65% of atopic dermatitis patients who are carriers of this microorganism.,
Several studies have investigated the effect of antimicrobial treatment on the colonization with Staphylococcus aureus and the severity of inflammation, with conflicting results. In one study it was found that antibiotics with an inhibitory effect on protein synthesis could suppress the production of superantigens. Mupirocin is a topical antibacterial agent, active against Staphylococcus aureus, including methicillin-resistant strains. After topical application, mupirocin is only very minimally absorbed systemically and whatever is absorbed is rapidly metabolized to an inactive metabolite, monic acid.
Fluticasone propionate ointment 0.005% is a potent topical corticosteroid with a good safety profile. It has been shown to be effective and safe in the treatment of moderate to severe atopic dermatitis. We conducted a multicentric trial in departments of dermatology across India to study the efficacy and safety of a combination ointment of fluticasone propionate 0.005% and mupirocin 2.0% in patients with atopic dermatitis clinically suspected of having secondary bacterial infection.
| Methods|| |
This was an open-label and non-randomized study. Patients with atopic dermatitis who visited the departments of dermatology as out-patients were recruited for the study. Patients of all age groups (3 months to 76 years of age) with recurrent or newly diagnosed mild to severe atopic dermatitis were eligible. Atopic dermatitis was diagnosed by clinical assessment and scoring was done on the visual analogue scale (VAS) which included itch (pruritus), dryness, weeping lesion, typical morphology and distribution. Patients with any medical situation for which topical corticosteroids were contraindicated, those with concomitant skin conditions that may have prevented accurate assessment of atopic dermatitis, and those receiving any treatment that might have affected the study results were excluded. Written informed consent was taken from all parents, guardians or patients.
Patients or the caregivers were instructed to apply fluticasone propionate 0.005% plus mupirocin 2% combination ointment twice daily for 2 weeks to the affected area over the body surface. No eyelid or pan-orbital areas were treated because of the potential risk of intra-ocular absorption leading to increased intra-ocular pressure.
The efficacy parameters of all treated and affected areas were recorded at baseline and at all subsequent visits. The efficacy of treatment was evaluated using clinicians′ assessment of clinical response, clinicians′ global impression (CGI) and the patients′ assessment of clinical response on the visual analogue scale (VAS). The clinical response was judged by evaluating improvement in signs and symptoms, i.e. itch (pruritus), dryness and weeping lesions. At each visit, patients were questioned about adverse events, and these were recorded. Use of any concurrent medication was noted and signs of cutaneous atrophy and abnormal pigmentation changes were visually observed.
The analyses were conducted on an intention-to-treat basis (total number of patients enrolled 122) with the last observation carried forward, such that patients who worsened on treatment remained in the analyses as treatment failures. The change from baseline in the signs and symptoms severity score was calculated as the absolute value and percentage change. In line with the overall objective of the study, the primary end point for the study was the improvement in signs and symptoms of atopic dermatitis assessed by clinicians as well as by patients. Data was analyzed using the Chi-square test to compare the observed readings at baseline with the readings obtained at visit 2 and visit 3.
| Results|| |
In the study a total of 122 patients (64 males and 58 females) from 20 centers (between May 2002 and January 2003) were recruited. The mean age of the patients was 13.5 years with a range of 3 months to 76 years. Eight patients were lost to follow-up and 114 patients completed the 2-week treatment period [Table - 1].
At baseline, the majority of the patients had moderate itching (41.8%), moderate dryness (41.8%), and mild weeping lesions (49.2%) according to the clinicians′ assessment of clinical response [Table - 2].
The clinician′s assessment of clinical response demonstrated an improvement with fluticasone propionate plus mupirocin treatment.
On visit 2 (day 8), treatment success was seen for moderate to severe signs and symptoms, i.e. itch, dryness and weeping lesions. On visit 3 (day 15), less than 2% of patients reported with severe signs and symptoms, and less than 10% patients reported with moderate signs and symptoms.
Improvement in the severity of atopic dermatitis was measured by Clinicians′ Global Impression (CGI) scale [Table - 3]. At baseline the proportions of patients with mild, moderate and severe atopic dermatitis lesions were 19.7%, 55.7% and 12.2% respectively on the CGI scale; these declined to 67.2%, 9% and 0.8% respectively at the end of treatment (day 15).
During all three visits, the patients assessed the clinical response on a visual analog scale (VAS) to analyze the relief from signs and symptoms. At baseline only 33.65% patients were comfortable with the existing lesions; this proportion increased to 51.77% and 78.60% patients on days 8 and 15 respectively [Table - 4].
No adverse events related to the study medication were observed. There were no local side effects, including irritation, stinging or skin atrophy, with use of fluticasone propionate plus mupirocin ointment during the 2-week treatment period.
Using the Chi-square test baseline values were compared with visit 2 (day 8) and visit 3 (day 15) values. We have observed that all comparative parameters showed statistically significant difference (P < 0.05) at visit 2 and visit 3 (P < 0.05) when compared to baseline values.
| Discussion|| |
Topical corticosteroids are the mainstay of treatment in AD. But there is no specific treatment plan for long-term management of the disease and the inappropriate use of corticosteroids can negatively influence the treatment′s success and safety. In a systematic review, Hoare et al found that most practitioners use one of two approaches: either a potent topical corticosteroid followed by a lower potency preparation as the condition improves, or short-term use of a topical corticosteroid followed by a maintenance regimen of emollients. The usual practice is to recommend a short burst (up to 2 weeks) of a topical corticosteroid for each acute episode of AD.
Fluticasone propionate is a highly effective topical corticosteroid with a low potential for local and systemic side effects. In our study, we did not assess the function of the HPA axis. However, several previous studies in children (including as young as 3 months) and adults with extensive involvement have shown that fluticasone propionate exhibits no significant effect on the basal or stimulated plasma concentration of cortisol or the 24 h urinary concentration of cortisol during short or long-term treatment.,
Atopic skin is susceptible to colonization with Staphylococcus aureus. Staphylococcal superantigens (SsAg) contribute to the pathogenesis of cutaneous inflammation in atopic dermatitis through various potential mechanisms, viz. direct stimulation of antigen presenting cells and keratinocytes, stimulation of T cell proliferation (by binding to T cell receptors), expansion of skin-homing cutaneous lymphocyte antigen positive T cells. Superantigens also play a role as allergens and in reduction of apoptosis. The cell wall of Staphylococcus aureus exhibits receptors "adhesins", for epidermal and dermal fibronectin and fibrinogen. As the skin of patients with AD may have breaches in the stratum corneum, dermal fibronectin might bind to Staphylococcus aureus. Staphylococcus aureus penetrates into intracellular spaces of the epidermis and deteriorates the skin surface lipids in patients with AD. Skin surface lipids such as free fatty acids and polar lipids are important because they exhibit antibacterial activity.
Staphylococcus aureus can be eliminated from the skin of patients with AD by topical treatment with potent corticosteroids or a combination of a corticosteroid and a topical antibiotic, which suggests the contribution of immunological factors that support colonization. Bacterial superantigens were recently shown to induce corticosteroid insensitivity. Hence the eradication of Staphylococcus aureus may lead to a steroid-saving effect. In double-blind placebo-controlled studies, the use of oral flucloxacillin or cefuroxime axetil significantly reduced Staphylococcus aureus colonization, but did not significantly improve AD., However, in another study, antimicrobial therapy (including the use of mupirocin ointment) led to the complete eradication of Staphylococcus aureus and to an improvement in AD in 9 out of 10 cases.
Our study has demonstrated that patients with AD respond well to treatment with fluticasone propionate 0.005% plus mupirocin 2% combination ointment. More than 90% of patients were converted to the "mild" severity group from the "moderate" and "severe" groups in two weeks on the clinicians′ global impression (CGI) scale for the severity of AD. This suggests that such a combination is an effective, safe and practical therapeutic regimen in AD.
Although we did not study quality of life indices, the reduction in signs and symptoms observed could be expected to significantly improve the quality of life of such patients. Topical antibacterial-corticosteroid combinations can be useful when treating small areas of AD for a limited period but their use is accompanied by the risk of sensitization and the emergence of resistant strains of bacteria. Use of a systemic antibacterial in combination with a topical corticosteroid is more appropriate when larger areas are involved. Systematic comparative studies are needed to document the impact of adjuvant topical antibacterial treatment in clinically infected and uninfected AD.
| Acknowledgements|| |
The author thanks the following investigators who recruited patients and took part in this study: Dr. Anil Abraham, Dr. K. Aravamadu, Dr. N. Balasubramanium, Dr. J. O. Coladia, Dr. Sandipan Dhar, Dr. G. G. Dhir, Dr. Manisha Gupta, Dr. Sanjeev Handa, Dr. (Mrs.) V. R. Janaki, Dr. Suresh P. Joshipura, Dr. Hema Jerajani, Dr. K. Pavithran, Dr. Sudhir Pujara, Dr. S. S. Rajendran, Dr. Vineet Relhan, Dr. S. Sacchidanand, Dr. B. V. Selvan, Dr. V. K. Sood, Dr. Tagde, and Dr. R. L. Sah.
Statistical Assistance: Dr. Murtuza Bughediwalla, Assistant Clinical Research Manager. Clinical Research and Medical Affairs, GlaxoSmithKline Pharmaceuticals Ltd., Worli, Mumbai - 400 030, India.
Clinical Trial Supplies (CTS): Flutibact ® is a brand of "Fluticasone Propionate 0.005% plus Mupirocin 2.0%: ointment provided to the all investigators by Medical Department (Clinical Research and Medical Affairs), GlaxoSmithKline Pharmaceuticals Ltd., Worli, Mumbai - 400 030, India
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[Table - 1], [Table - 2], [Table - 3], [Table - 4]
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