Lege Artis Medicinae

[A novel rapid IL-6 release assay using blood mononuclear cells of patients with various forms of drug induced skin injuries]

BALÓ-BANGA J. Mátyás1, SCHWEITZER Katalin2

SEPTEMBER 22, 2013

Lege Artis Medicinae - 2013;23(09)

[INTRODUCTION - IL-6 is a multifunctional cytokine with effects on the haematopoiesis on differentiation of T and B lymphocytes and on the regulation of both inflammatory and allergic reactions. The question arose whether this substance excreted by mononuclear cells could be used as a marker of allergy to drugs or not. Till now equivocal descriptions were lacking. METHOD - The preformed IL-6 present in the mononuclear cells released by any of four standard dilutions of pure substances upon 20 minutes incubation was determined from the supernatants by ELISA technique. In vivo patch, intradermal and provocation tests were carried out along with this assay (483 in vitro and 172 in vivo). RESULTS - Two different groups suspect for drug allergy (100 and 62 patients as well as their matching controls, 24 and 23 persons) were involved with these procedures. In some cases TNF-α, IL-2, IFN-γ and IL-4 was measured simultaneously by flow cytometric assay. Only TNF-α and IL-6 were present in the 20 min. supernatants. The comparisons with in vivo tests have confirmed that the amount of IL-6 release had not depended either on the clinical phenotype of allergy or on the structure of the tested drugs within the molecular mass range between 76-4000 Da. IL-6 released at the lowest or multiple concentrations of drugs coincided with more severe and widespread clinical forms. CONCLUSION - Based on the results we elaborated an in vitro method applicable clinically for detecting drug sensitisation and its differential diagnosis in patients with skin signs of drug sensitisation.]

AFFILIATIONS

  1. Magyar Honvédség, Honvédkórház, Bôrgyógyászati Osztály és Szakambulancia
  2. Magyar Honvédség, Honvédkórház, Kórélettani és Immunológiai Laboratórium

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[Prevention of infections in patients with absent or dysfunctional spleen: adaptation of international guidelines]

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[Individuals with an absent or dysfunctional spleen are at increased risk of severe infection. The greatest risk of infection is within two years after splenectomy. A spectrum of infecting microorganisms may cause serious infections, especially in young or immunocompromised patients. The commonest pathogens are Streptococcus pneumoniae, Neisseria meningitidis and in some countries Haemophilus influenzae type b (Hib). The international guidelines for the prevention and treatment of infection in patients with an absent or dysfunctional spleen are inconsistent. Most of the evidence is obtained from expert committee reports or opinions and/or clinical experiences of respected authorities. This area in Hungary also represents an unmet need. Patients who have undergone surgical removal of the spleen and those with medical conditions that may predispose to functional hyposplenism must be educated about the danger of their condition, must be immunised and must be treated with prophylactic antibiotics according to national epidemiological and microbiological protocols. In Hungary we have an urgent need for a definite guideline for infection profilaxis of individuals with an absent or dysfunctional spleen. This paper is written by a vaccination consultant with the intention of raising awareness and to provide some assistence for physicians and their patients.]

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