PART 2
1: Br J Dermatol. 1976 Dec;95(6):603-6.Links
Bacterial flora in psoriasis.Aly R, Maibach HE, Mandel A.
The aerobic bacterial flora of psoriatic plaques, uninvolved skin and the anterior nares of forty psoriatic patients was studied. The incidence od Staphylococcus aureus was 30% in the anterior nares, 20% on the plaques and 13% on the uninvolved skin. S. aureus counts were 3 x 10(2)/cm2 on the plaques and 1-5 x 10/cm2 on the normal skin. The total bacterial counts were also higher on plaques (7-9 x 10(3)/cm2) than on normal skin (3-0 x 10(3)/cm2). The incidence of lipophilic diphtheroids was significantly lower on the plaques (4%) than the normal skin (30%). Eighty percent of the strains of S. aureus isolated from psoriatic patients were resistant to 10 units of penicillin. Because of increased desquamation, psoriatic skin is a public health hazard.
Dermatologica. 1978;157(1):21-7.Links
Bacteriology of psoriatic plaques.Singh G, Rao DJ.
Qualitative and quantitative studies of cutaneous bacterial flora were carried out in psoriatic patients and normal healthy controls. In psoriatics, the flora isolated from the affected skin was compared with the flora of adjacent normal skin. No significant qualitative difference was observed. The total number of bacteria isolated from the psoriatic plaque was significantly higher than on the adjacent normal skin. Flora of normal skin of psoriatics when compared with the skin of healthy controls did not reveal any qualitative difference, but a statistically significant difference was observed in the total bacterial counts. The nasal carriage rate of Staphylococcus aureus in psoriatics was higher than the control groups.
1: J Am Acad Dermatol. 1986 May;14(5 Pt 1):761-4.Links
Use of rifampin with penicillin and erythromycin in the treatment of psoriasis. Preliminary report.Rosenberg EW, Noah PW, Zanolli MD, Skinner RB Jr, Bond MJ, Crutcher N.
The addition of 5 days of rifampin therapy to a 10- or 14-day course of penicillin or erythromycin therapy has been shown to reduce greatly the rate of chronic streptococcal carriage. The empiric use of rifampin in combination with penicillin or erythromycin in nine of nine patients with streptococcal-associated psoriasis appeared to coincide with a marked improvement in their skin.
1: Acta Derm Venereol Suppl (Stockh). 1989;146:72-4; discussion 75.Links
Microbial associations of 167 patients with psoriasis.Rosenberg EW, Noah PW, Skinner RB Jr, Vander Zwaag R, West SK, Browder JF.
Department of Medicine (Dermatology), University of Tennessee College of Medicine, Memphis.
Microbial findings were analyzed from a group of 167 patients with psoriasis in an attempt to discover specific associations. Positive findings include associations between Malassezia ovalis and scalp/ear/face psoriasis and between bacteria and bodyfold, nailfold, and gluteal/rectal psoriasis.
1: Semin Dermatol. 1990 Dec;9(4):269-76.Links
The role of microorganisms in psoriasis.Noah PW.
Department of Medicine Dermatology, College of Medicine, University of Tennessee, Memphis 38163.
The microflora of 297 psoriasis patients was extensively examined. Throat, urine, and skin surfaces from scalp, ears, chest, face, axillary, submammary, umbilical, upper back, inguinal crease, gluteal-fold, perirectal, vaginal, pubis, penis, scrotal, leg, hands, feet, finger, and toenail areas were cultured for aerobic bacteria, yeast, and dermatophytes. Antibody levels to streptococcal enzymes were performed (streptolysin-O, DNAse-B, hyaluronidase, STREPTOZYME). Giemsa smears and KOH preparations were also used to determine yeast and dermatophyte presence. Associated organisms thought to provoke a psoriatic attack were as follows: streptococcal groups A, B, C, D, F, G, S viridans, S pneumoniae; Klebsiella pneumoniae, oxytoca; Escherichia coli; Enterobacter cloacae, E aerogenes, E agglomerans; Proteus mirabilis, P vulgaris; Citrobacter freundii, C diversus; Morganella morganii; Pseudomonas aeruginosa, P maltiphilia, P putida; Serratia marcescens; Acinetobacter calbio aceticus, A luoffi; Flavobacterium specie; CDC groups Ve-1, Ve-2, E-o2; Bacillus subtilis, cereus; Staphylococcus aureus; Candida albicans, C parapsilosis; Torulopsis, glabrata; Rhodotorula and dermatophytes. One or more antistreptococal enzyme tests was positive in 50% of patients. Titers to hepatitis E were elevated in one patient and to HIV in two patients.
1. Am Acad Dermatol. 1992 Mar;26(3 Pt 2):458-61.Links
A therapeutic trial of the use of penicillin V or erythromycin with or without rifampin in the treatment of psoriasis.
Vincent F, Ross JB, Dalton M, Wort AJ.
Department of Medicine, Faculty of Medicine, Dalhousie University, Halifax, N.S., Canada.
BACKGROUND: After the publication of an uncontrolled trial of nine patients with streptococcus-associated psoriasis who appeared to benefit from a course of oral penicillin or erythromycin with the addition of rifampin in the last 5 days, we wished to confirm or refute the validity of this observation. OBJECTIVE: Our purpose was to confirm the effectiveness of antibiotics in the treatment of streptococcus-associated psoriasis. METHODS: Twenty patients were placed randomly into two groups. One group was given penicillin or erythromycin for 14 days with a placebo added during the last 5 of the 14 days. The other group received the same medication with the addition of rifampin in the last 5 days. RESULTS: Although all the patients studied met the criteria of the reported preliminary study, we were unable to detect any evidence of improvement in their psoriasis. CONCLUSION: There was no apparent benefit for patients with streptococcus-associated psoriasis from a course of oral penicillin or erythromycin with the addition of rifampin in the last 5 days in a 14-day trial.
1: J Natl Med Assoc. 1994 Apr;86(4):305-10.Links
Microorganisms and psoriasis.Rosenberg EW, Noah PW, Skinner RB Jr.
Department of Dermatology, University of Tennessee College of Medicine, Memphis 38163.
It has been suggested previously that psoriasis is best explained as a distinctive inflammatory response to a variety of microbial stimuli, all acting primarily through activation of the alternative complement pathway. For the past several years we have conducted a "Problem Psoriasis Clinic" based on that premise. Patients are questioned, examined, and subjected to microbiologic laboratory investigations in an attempt to identify possibly relevant microorganisms, and then are treated with antibiotics. This article lists the most commonly found microorganisms in psoriasis patients and describes the usual treatment for each. Results obtained with this approach compare favorably with those achieved with more usual anti-psoriasis treatments. We recommend that a microbiologic investigation and a trial of antimicrobial treatment should precede any plan to treat psoriasis patients with anything more than the simplest topical agents.
CONCLUSION
Do antibiotics offer a practical way to manage psoriasis? In our experience, a search for relevant microbes and treatment with antimicrobial drugs is a practical way to manage psoriasis. Recently, we reported results of antimicrobial treatment of 126 patients with
psoriasis, many of these problem cases referred by other physicians. Approximately 50% of our patients were completely or almost completely cleared of their diseases, another 30% markedly improved, and in about 20% the treatment failed. These results compare favorably with results achieved with other treatments including some with a substantial potential for harm.
Certainly, we think that a work-up and therapeutic trial of antimicrobial treatment should always be attempted before starting treatment with methotrexate, etretinate or
cyclosporin, and probably prior to the institution of psoralen-ultraviolet-light therapy.
Even for patients who can control their diseases topically with either corticosteroid or tars but who require almost continuous such applications, this kind of approach appears to offer significant potential benefit.
1: J Dermatol. 1994 Jun;21(6):375-81.Links
Psoriasis is a visible manifestation of the skin's defense against micro-organisms.
Rosenberg EW, Noah PW, Skinner RB Jr.
Department of Medicine (Dermatology), University of Tennessee College of Medicine, Memphis.
The recent discovery that human epidermal cells themselves make and secrete the components necessary for activation of the alternative complement pathway appears to provide an explanation for how human skin is ordinarily able to avoid colonization by molds and other organisms. It also helps clarify the mechanisms underlying clinical and laboratory findings seen in chronic mucocutaneous candidiasis, dandruff, and psoriasis. Psoriasis seems best explainable as a visible, late stage of the inflammatory sequelae of activation of the alternative complement pathway in the epidermis.
1: Dermatol Clin. 1995 Oct;13(4):909-13.Links
Antimicrobial treatment of psoriasis.Skinner RB Jr, Rosenberg EW, Noah PW.
Department of Medicine, University of Tennessee, Memphis 38163, USA.
At the Problem Psoriasis Clinic at the University of Tennessee, Memphis, we use an antimicrobial approach for the treatment of psoriasis. This method is described for patient history, physical examination, and laboratory tests as well as treatment.
1: Adv Exp Med Biol. 1997;418:157-9.Links
Microbial associations and response to antimicrobials seen in a psoriasis clinic.
Belew-Noah PW, Rosenberg WE, Zabriskie JB, Skinner RB Jr, Henson TH, Beard GB.
University of Tennessee, Memphis, USA.
INTRODUCTION
Microbial agents have often been reported in association with flares of psoriasis and psoriasis often clears when treated with antimicrobial agents or tonsillectomy. All patients seen at the University of Tennessee Psoriasis clinic are studied for evidence of relevant microorganisms. We report a survey of the microbial findings in 95 patients chosen at random from the 693 psoriasis patients seen during 1995.
RESULTS IN PSORIASIS
The most frequently seen organisms were streptococci of Lancefield groups A, B, C, D (Enterococcus) and G. Also Streptococcus sanguis, mitis and moribillorum; also Haemophilis, Moraxella, Klebsiella, Enterobacter, Eschericia, Proteus, Pseudomonas, Flavomonas, Acinetobacter, Bacillus, Candida, Malassezia and dermatophytes. Positive serological tests to group A streptococcal exoenzymes, Helicobacter and cytomegalovirus occured.
CONCLUSION
Antimicrobials evoking clearing in psoriasis were ketaconazole, fluconazole, itraconazole, nystatin, penicillin/rifampin, peniccilin G benzathine, loracarbef, amoxicillin, and sulfasalazine. A positive response to antimicrobials occured in 68 of 77 (88%) of patients.
1: Acta Derm Venereol Suppl (Stockh). 2000;(211):17-8.Links
Subclinical microbial infection in patients with chronic plaque psoriasis.
Bartenjev I, Rogl Butina M, Potocnik M.
Department of Dermatovenereology, University Medical Centre, 1525, Ljubljana, Slovenia.
Epidemiological evidence implicates bacterial infection as a common triggering stimulus for psoriasis. Recent studies suggest that continuing, subclinical streptococcal and staphylococcal infections might be responsible not only for relapse of acute guttate psoriasis but also for a new episode of chronic plaque psoriasis. In this study 195 patients suffering from a severe form of chronic plaque psoriasis hospitalized between 1996 and 1998 were examined. The presence of subclinical microbial infection of the upper respiratory tract was studied by the cultivation of pathogens from this area. Patients with other provoking factors, such as a positive history of taking any drugs that may exacerbate psoriasis, endocrine and metabolic factors, alcohol abuse, trauma, dental focus and clinically evident bacterial infection, were excluded. Subclinical streptococcal and/or staphylococcal infections were detected in 68% of tested patients and in only 11% of the control group. The results of this study indicate that subclinical bacterial infections of the upper respiratory tract may be an important factor in provoking a new relapse of chronic plaque psoriasis. Searching for, and eliminating, microbial infections could be of importance in the treatment of psoriasis.
1: Br J Dermatol. 2003 Sep;149(3):530-4.
Streptococcal throat infections and exacerbation of chronic plaque psoriasis: a prospective study.
Gudjonsson JE, Thorarinsson AM, Sigurgeirsson B, Kristinsson KG, Valdimarsson H.
Departments of Immunology, Dermatology and Microbiology, Landspitali University Hospital, Hringbraut, Reykjavik, Iceland.
BACKGROUND: Guttate psoriasis has a well-known association with streptococcal throat infections but the effects of these infections in patients with chronic psoriasis remains to be evaluated in a prospective study. OBJECTIVES: To determine whether streptococcal throat infections are more common in and can cause exacerbation in patients with chronic psoriasis. METHODS: Two hundred and eight patients with chronic plaque psoriasis and 116 unrelated age-matched household controls were followed for 1 year. At recruitment all patients were examined, their disease severity scored and throat swabs taken. Patients and corresponding controls were then re-examined and tested for streptococcal colonization whenever they reported sore throat or exacerbation of their psoriasis during the study period. RESULTS: The psoriasis patients reported sore throat significantly more often than controls (61 of 208 vs. three of 116, P < 0.0001), and beta-haemolytic streptococci of Lancefield groups A, C and G (M protein-positive streptococci) were more often cultured from the patients than the controls (19 of 208 vs. one of 116, P = 0.003). A significant exacerbation of psoriasis (P = 0.004) was observed only if streptococci were isolated and the patients were assessed 4 days or later after the onset of sore throat. No difference was observed between groups A, C or G streptococci in this respect. CONCLUSIONS: This study confirms anecdotal and retrospective reports that streptococcal throat infections can cause exacerbation of chronic plaque psoriasis. It is concluded that psoriasis patients should be encouraged to report sore throat to their physician and that early treatment of streptococcal throat infections might be beneficial in psoriasis. A controlled trial for assessing potential benefits of tonsillectomy in patients with severe psoriasis should also be considered.
Rifampicin is effective in the treatment of psoriasis with and without concurrent streptococcal infection
Source: Inpharma, Volume 1, Number 1530, 2006-03-25 , pp. 7-7(1)
Publisher: Adis International
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