PubMed · 16108477
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David Jones. 2005. Casebook: psoriasis.. https://pubmed.ncbi.nlm.nih.gov/16108477/
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Acquired inhibitors of coagulation factors, particularly to factor V (FV) and thrombin, after topical bovine thrombin exposure may result in clinically important coagulopathies. While bovine thrombin is commonly used in pediatric patients for surgical hemostasis, the reported cases of acquired inhibitors in children are few. We report two cases of children who developed factor inhibitors after bovine thrombin exposure. One child developed a FV inhibitor at 3 months of age after exposure to bovine thrombin during cardiac surgery. The inhibitor resolved with intravenous immunoglobulin (IVIG) and steroids. The other child developed concomitant FV and bovine thrombin inhibitors after cardiac surgery at age 11 years. The presence of these inhibitors complicated post-operative anti-coagulation management, but the inhibitors were transient. In addition to these two cases, we identified all the pediatric patients with bovine thrombin-induced inhibitors who were reported in the world's literature, and reviewed their clinical characteristics. These cases underscore the fact that bovine thrombin can be antigenic in infants and children and can result in significant coagulopathies.
Erythema annulare centrifugum is an acute dermatosis of unclear etiology, which presents with annular erythematous lesions with marginal scale. Therapeutically, systemic and topical glucocorticosteroids are used primarily. We treated a patient with large lesions in the area of the thighs resistant to a therapy with topical glucocorticosteroids, with topical calcitriol in combination with 311 nm ultraviolet B narrow band phototherapy. After four weeks of treatment the skin lesions had cleared nearly completely without any side effects. The combination topical vitamin D3-analogue calcitriol and 311 nm ultraviolet B narrow band phototherapy was effective and can be regarded as a useful alternative to glucocorticosteroids for erythema annulare centrifugum.
BACKGROUND: Concern exists that the prolonged application of immunomodulators to treat atopic dermatitis may cause systemic immunosuppression. AIMS: In a 7-month, multicentre, randomised, controlled trial, we investigated the equivalence of response to vaccination against meningococcal serogroup C disease with a protein-conjugate vaccine in children (2-11 years) with moderate to severe atopic dermatitis, by applying either 0.03% tacrolimus ointment (TAC-O; n = 121[corrected]) or a hydrocortisone ointment regimen (HC-O; n = 111). METHODS: TAC-O was applied twice daily (bid) for 3 weeks, and thereafter daily until clearance. 1% hydrocortisone acetate (HA) for head/neck and 0.1% hydrocortisone butyrate ointment for trunk/limbs was applied bid for 2 weeks; thereafter HA was applied bid to all affected areas. At week 1, patients were vaccinated with protein-conjugate vaccine against meningococcal serogroup C, and challenged at month 6 with low dose meningococcal polysaccharide vaccine. The control group (44 non-atopic dermatitis children) received the primary vaccination and challenge dose. Assessments were made at baseline, weeks 1 and 5, and months 6 and 7. The primary end point was the percentage of patients with a serum bactericidal antibody (SBA) titre > or = 8 at the week 5 visit. RESULTS: The response rate (patients with SBA titre > or = 8) was 97.5% (confidence interval (CI) approximately 97.3 to 100), 99.1% (94.8 to 100) and 97.7% (93.3 to 100) in the TAC-O, HC-O and control groups, respectively. CONCLUSIONS: The immune response to vaccination against meningococcal serogroup C in children with atopic dermatitis applying either 0.03% TAC-O or HC is equivalent. Ointment application does not affect the immediate response to vaccination, generation of immune memory or humoral and cell-mediated immunity.