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PubMed1978

Clinical pharmacology of cefadroxil in infants and children.

The pharmacokinetics of cefadroxil suspension were studied in 30 children, 13 months to 12 years of age (mean age, 5.7 years). Average peak concentrations in serum of 11 to 14 mug/ml and of 7 to 10 mug/ml after 15- and 10-mg/kg doses, respectively, were not substantially affected by the feeding status. The serum half-life values were 1.3 to 1.5 h. Cefadroxil was detected in saliva of all children 2 h after 15-mg/kg doses: the levels ranged from 0.17 to 2.6 mug/ml (mean, 0.46 mug/ml). The average concentrations in urine were 1,700 and 2,620 mug/ml at 0 to 2 and 2 to 4 h, respectively, after 15-mg/kg doses. In a randomized controlled study of 50 children with impetigo, cefadroxil was as effective as penicillin G in curing existing lesions and in preventing development of new lesions. Cefadroxil may be useful for therapy of mucocutaneous and urinary tract infections in infants and children.

Biological Availability↗

PubMed1983

Amoxicillin combined with clavulanic acid for the treatment of soft tissue infections in children.

We compared responses to amoxicillin combined with clavulanic acid (ACA) with a cefaclor regimen in children with skin and soft tissue infections (impetigo and cellulitis) due to Staphylococcus aureus, Streptococcus pyogenes, and Haemophilus species. All isolates from the 41 patients we were able to evaluate were susceptible to ACA by disk susceptibility testing at the onset of treatment. The 21 children receiving ACA and 18 (90%) of 20 taking cefaclor responded to therapy. Clinical cure was achieved in 18 (86%) of 21 and 18 (90%) of 20 in the two groups, respectively. Bacteriological failure occurred in 2 (10%) patients in the cefaclor group and none in the group receiving ACA; however, there were 2 (9%) relapses and 1 (5%) reinfection among the 21 children taking ACA. Adverse effects, although mild, occurred more commonly (9 of 21 versus 1 of 20; P = 0.005) with ACA than with cefaclor.

Amoxicillin↗

PubMed2000

Efficacy of a new cream formulation of mupirocin: comparison with oral and topical agents in experimental skin infections.

A new cream formulation of mupirocin developed to improve patient compliance was compared with systemic and topical antibiotics commonly used to treat primary and secondary skin infections. A mouse surgical wound model infected with Staphylococcus aureus or Streptococcus pyogenes was used. Topical treatment was applied at 4 and 10 h postinfection or oral treatment at a clinically relevant dose was administered 4, 8, and 12 h postinfection; treatments were continued three times daily for a further 3 days. Mupirocin cream was significantly more effective than (P < 0.01; two of eight studies) or not significantly different from (six of eight studies) mupirocin ointment in reducing bacterial numbers. Mupirocin cream was similar in efficacy to oral flucloxacillin but significantly more effective (P < 0.001) than oral erythromycin. It was also similar in efficacy to cephalexin against S. pyogenes but superior against S. aureus (P < 0.01). Mupirocin cream had a similar efficacy to fusidic acid cream against S. aureus but was significantly superior against S. pyogenes (P < 0.01). A hamster impetigo model infected with S. aureus was also used. Topical or oral treatment was administered at 24 and 30 h postinfection (also 36 h postinfection for oral therapy) and then three times daily for a further 2 days. On day 5, mupirocin cream was significantly more effective than mupirocin ointment in one study (P < 0.01) and of similar efficacy in the other two studies. Mupirocin cream was not significantly different from fusidic acid cream or neomycin-bacitracin cream, but it was significantly superior (P < 0.01) to oral erythromycin and cephalexin. Mupirocin cream was as effective as, or superior to, oral and other topical agents commonly used for skin infections.

Administration, Oral↗

PubMed2004

A fusidic acid-resistant epidemic strain of Staphylococcus aureus carries the fusB determinant, whereas fusA mutations are prevalent in other resistant isolates.

Fusidic acid-resistant epidemic Staphylococcus aureus strains causing impetigo bullosa have been reported in Scandinavia. We show that these strains form part of a European epidemic clonotype that carries the fusB determinant. In contrast, resistance to fusidic acid in a collection of nonepidemic strains resulted primarily from mutations in fusA.

Anti-Bacterial Agents↗

PubMed1972

Antibody responses to group A streptococcal infections in the hamster.

The immune response after streptococcal infections of the skin and of the joints was studied in an experimental animal model. Hamsters were challenged intradermally or intra-articularly with different streptococcal serotypes, and antibodies for streptolysin O (ASO), deoxyribonuclease B (anti-deoxyribonuclease B), and group A carbohydrate (anti-group A CHO) were determined. After a single injection at either site, 7 of 48 animals (14%) developed group A-CHO antibodies; however, none of the animals developed detectable levels of ASO or anti-deoxyribonuclease B. After repeated infections of the skin or joint, anti-deoxyribonuclease B antibodies were detectable in 13% (4 of 30) and 30% (5 of 17) of the animals, respectively. Elevations of ASO occurred after repeated joint infections in 4 of 16 animals (25%), whereas none of 30 hamsters repeatedly infected intradermally developed antibodies against streptolysin O. For all three antibodies tested, elevated levels were more frequently noted after repeated joint infections than after repeated skin infections with the same streptococcal serotype. These data, similar to ones previously noted in human impetigo, indicate that ASO responses are feeble after streptococcal skin infections and that the site of infection per se, rather than the infecting strain, appears to be responsible for this poor response.

Animals↗

PubMed1975

Two serotypes of exfoliatin and their distribution in staphylococcal strains isolated from patients with scalded skin syndrome.

Two serotypes of exfoliatin, A and B, previously reported by Kondo et al. (1974) were examined for their presence in 43 strains of Staphylococcus aureus, most of which were isolated from patients with Ritter's disease and impetigo. The tested strains consisted of 24 strains of phage group II and 19 strains not of phage group II. Twenty-four strains were found to produce an exfoliatin of either type A or type B, but 16 strains produced both types and 3 strains produced neither. No relationship was found between the serotype of an exfoliatin and the phage type of the exfoliative strain, although the single producers of exfoliatin A were all found to belong to phage group II and those of exfoliatin B to the other phage group.

Bacteriophage Typing↗

PubMed1984

Overturning the diagnosis of child abuse.

Three cases, one of bullous impetigo, one of a Mongolian spot, and one of constriction of the toe by a hair, were mistakenly diagnosed as cases of child abuse. The diagnosis of child abuse is not usually simple and requires a careful evaluation of the injuries and the family if cases are not to be either overlooked or overdiagnosed.

Child Abuse↗

PubMed1988

Mistakes in diagnosing non-accidental injury: 10 years' experience.

Fifty children who were referred to the child abuse team in Leeds over the 10 years 1976-86 with suspected non-accidental injury were found to have conditions which mimicked non-accidental injury. These included impetigo (nine children) and blue spots (five children). Five children who presented with multiple bruising had haemostatic disorders. Eight children had disorders of the bone. Five children had been previously abused physically. Four showed evidence of neglect. One had evidence of non-accidental injury as well as the condition mimicking abuse. It is emphasised that when child abuse is suspected a sensitive and thorough assessment should be carried out by a paediatrician who is experienced in this.

Adolescent↗

PubMed1996

Addition of rifampin to cephalexin therapy for recalcitrant staphylococcal skin infections--an observation.

We report two pediatric patients with recalcitrant staphylococcal infections whose infections resolved when rifampin was added to standard antistaphylococcal therapy. One patient had a post-varicella staphylococcal ulcerative lesion and did not respond to cephalexin alone but did respond when rifampin was added. A second patient had staphylococcal bullous impetigo and did not respond to dicloxacillin or cephalexin but did respond when rifampin was added to the cephalexin. If a patient fails to respond to traditional antistaphylococcal therapy, the addition of rifampin may be beneficial.

Cephalexin↗

PubMed1980

The comparative pathology of non-viral bullous skin diseases in domestic animals.

In a review of non-viral bullous skin diseases of domestic animals and a 4-year study of cases presented to the New York State College of Veterinary Medicine, we found 15 diseases: pemphigus vulgaris, pemphigus vegetans, pemphigus foliaceus, pemphigus erythematosus, bullous pemphigoid, systemic lupus erythematosus, dermatitis herpetiformis, toxic epidermal necrolysis, drug eruption, epidermolysis bullosa, epidermolysis bullosa simplex, familial acantholysis, bovine congenital porphyria, impetigo and subcorneal pustular dermatosis. The 15 diseases were placed in five categories: autoimmune, immune-mediated, hereditary, bacterial and idiopathic. A histologic classification of these disorders based on the site of blister formation and other important clinicopathologic, histologic and immunopathologic findings was developed.

Acantholysis↗

PubMed1988

A comparison of sodium fusidate ointment and mupirocin ointment in superficial skin sepsis.

Sodium fusidate ointment and mupirocin ointment were compared in 354 patients with superficial skin sepsis. The ointments were applied 3-times daily, or once daily when covered by a dressing, and the response assessed after 6 to 8 days. Both preparations proved effective clinically with 86% of patients responding. There was no difference between the two preparations in cases of primary infection (85% to both ointments), including a sub-group with impetigo (sodium fusidate 88% and mupirocin 84%), or secondary infection (sodium fusidate 81% and mupirocin 89%). Sodium fusidate ointment (98%) was significantly better (p less than 0.05) than mupirocin (82%) in patients with other superficial infections. Both ointments were equally effective in cases where Gram-positive, Gram-negative or mixed Gram-positive/Gram-negative bacteria were isolated. Adverse effects were reported in 1.0% of patients using sodium fusidate ointment and in 7.4% of patients using mupirocin ointment. The majority of complaints concerned the greasiness of mupirocin ointment.

Adolescent↗

PubMed1985

Role of some infectious agents in atopic dermatitis.

Certain infections such as Kaposi's herpetic eruption, impetigo, recurrent cutaneous herpes simplex and warts are more frequent in subjects with atopic dermatitis. It is likely that the continuous alterations of the skin are more important than immunological factors in increasing the frequency of some infections in subjects with atopic dermatitis. Moreover, these infections do not seem to affect significantly the clinical course of atopic dermatitis.

Adolescent↗

PubMed2006

Evaluation of simplified DNA extraction methods for emm typing of group A streptococci.

Simplified methods of DNA extraction for amplification and sequencing for emm typing of group A streptococci (GAS) can save valuable time and cost in resource crunch situations. To evaluate this, we compared two methods of DNA extraction directly from colonies with the standard CDC cell lysate method for emm typing of 50 GAS strains isolated from children with pharyngitis and impetigo. For this, GAS colonies were transferred into two sets of PCR tubes. One set was preheated at 94 degrees C for two minutes in the thermal cycler and cooled while the other set was frozen overnight at -20 degrees C and then thawed before adding the PCR mix. For the cell lysate method, cells were treated with mutanolysin and hyaluronidase before heating at 100 degrees C for 10 minutes and cooling immediately as recommended in the CDC method. All 50 strains could be typed by sequencing the hyper variable region of the emm gene after amplification. The quality of sequences and the emm types identified were also identical. Our study shows that the two simplified DNA extraction methods directly from colonies can conveniently be used for typing a large number of GAS strains easily in relatively short time.

Antigens, Bacterial↗

PubMed1992

Relapsing bullous staphyloderma.

Relapsing eruptions of bullae rapidly turning into pustules were seen in a 69-year-old woman of good general health. At different times during several months of observation, strains of S. aureus were grown from various lesions, including one (phage group III) producing enterotoxin C. Systemic involvement except for high BSR was absent and repeated blood cultures were negative. Histopathological findings resembled impetigo. Antibiotic treatment was effective. As this disease does not fit into any of the well-known pustular infectious dermatoses, we suggest calling it relapsing bullous staphyloderma.

Aged↗

PubMed2001

Common bacterial skin infections.

Skin infections account for a significant portion of dermatologic disease, often resulting in or as a consequence of a disruption in the skin's integrity. This article covers the presentation, diagnosis, and treatment of the more common bacterial infections. The infections presented herein include impetigo, ecthyma, folliculitis, carbuncles/furuncles, cellulitis, toxic shock syndrome, and ecthyma gangrenosum. Once a diagnosis is made, treatment is based on the culture and antibiotic sensitivities of the offending organisms.

Anti-Bacterial Agents↗

PubMedDate not supplied

An inhibitor of Staphylococcus aureus exfoliative toxin.

We describe here an inhibitor of Staphylococcus aureus exfoliative toxin. The toxin was extracted from an S. aureus strain isolated from a case of staphylococcus scalded skin syndrome. The activity of the toxin was compared in tryptic soy broth and brain heart infusion broth. Both supported growth of S. aureus but the culture filtrate of brain heart infusion broth lacked exfoliative toxin activity. Furthermore it appeared to contain a substance that neutralized the action of exfoliative toxin. This suggests the possibility of a treatment for staphylococcal scalded skin syndrome and bullous impetigo.

Animals↗

PubMed1977

[Long-term observation of fungal and other skin disorders after renal transplantation (author's transl)].

All of 68 renal transplant recipients (mean observation time 28.4 months after transplantation) showed skin complications. In these subjects fungal infection was found in 51, viral disease in 45 and bacterial infection in 36 cases. Of fungal manifestations candidiasis, onychomycosis, and dermatomycosis were most commonly observed. The most important viral disease was herpes simplex. The main part of bacterial infections was either caused by surgical complications or by super-infection (impetigo) of steroid acne. Non infectious dermatological disorders were usually due to immunosuppressive therapy.

Acne Vulgaris↗

PubMed2003

[Specific dermatoses of pregnancy].

A heterogenic group The dermatoses specifically associated with pregnancy are generally benign, even if they lead to great discomfort. Some of them require appropriate management because of the risk of maternal or foetal complications. Pruritus of pregnancy Corresponds to intra-hepatic cholestasis of pregnancy, present in 1 to 2% of pregnant women, it may place the foetus at risk of delayed growth, prematurity or even death in utero. Treatment relies on cholestyramine. Pemphigoid gestationis or herpes gestationis This is an autoimmune disease of pregnancy occurring in multiparous women between the 28th and 32nd week of amenorrhoea (once out of 5 times within the first 7 days postpartum). Diagnosis is confirmed by histological examination of a bullous lesion. The disease usually regresses spontaneously after delivery, generally within a period of 1 to 17 months. Relapses, earlier on and more severe than during the initial episode, occur in 50 to 70% of subsequent pregnancies. Treatment is essentially based on corticosteroids: local Class II for the pauci-bullous and/or limited forms and general corticosteroid therapy for the severe forms. Polymorphic dermatitis of pregnancy This regroups various and similar entities described during pregnancy. They start during the third trimester of pregnancy, their clinical aspects are similar, their histology is non specific, the biological explorations are normal, direct immunofluorescence is negative, the progression is favourable for the mother and the child and the pathogenesis is unknown. Impetigo herpetiformis This exceptional dermatosis affects the primiparous woman in 80% of cases and the eruption usually appears during the 3rd trimester of pregnancy, or even after delivery. Relapses are constant during subsequent pregnancies.

Dermatitis↗