PMID- 11210867 OWN - NLM STAT- MEDLINE DCOM- 20010222 LR - 20131121 IS - 0023-852X (Print) IS - 0023-852X (Linking) VI - 111 IP - 2 DP - 2001 Feb TI - Changes in serum interferon-gamma, interleukin-4, and interleukin-12 cytokine levels in anti-histamine type 2-treated allergic rhinitis patients. PG - 236-9 AB - OBJECTIVES/HYPOTHESIS: Markedly elevated immunoglobulin E (IgE) synthesis characterizes allergic diseases. Interferon-gamma (IFN-gamma) and interleukin-4 (IL-4) regulate IgE synthesis. It has been shown that immunotherapy and histamine type 2 (H2) receptor antagonists induce a clinical improvement, decrease IgE antibodies, and increase T-cell subsets, which express a suppressor function. In addition, immunotherapy brings about a reduction in the amount of IL-4 in T-cell clones of allergic individuals. The purpose of this study was to investigate the profile of cytokines IFNgamma and IL-4 that occurs in vivo in anti-H2-treated patients with allergic rhinitis (AR). METHODS: Enrolled were 65 AR patients with sensitivity to a single allergen, the Parietaria, 36 of whom were randomly assigned to treatment with ranitidine at a dosage of 1 mg/kg per day intravenously for 20 days, and 29 to placebo treatment. RESULTS: A comparison of the serum cytokine values recorded before and after anti-H2 treatment showed a significant increase in INF-gamma serum level (P = .003) and a decrease in IL-4 (P = .016). Negligible variations were found in the placebo-treated group. CONCLUSION: H2 antagonists probably induce their effects by enhancing the amount of IFN-gamma and by reducing IL-4 cytokines, which, respectively, induce a decrease and an increase in the IgE synthesis. FAU - Testa, B AU - Testa B AD - Institute of Otolaryngology, School of Medicine, Second University of Naples, Italy. FAU - Mesolella, C AU - Mesolella C FAU - Mosti, M R AU - Mosti MR FAU - Mesolella, M AU - Mesolella M FAU - Testa, D AU - Testa D FAU - Motta, G AU - Motta G LA - eng PT - Clinical Trial PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - Laryngoscope JT - The Laryngoscope JID - 8607378 RN - 0 (Cytokines) RN - 0 (Histamine H2 Antagonists) RN - 187348-17-0 (Interleukin-12) RN - 207137-56-2 (Interleukin-4) RN - 37341-29-0 (Immunoglobulin E) RN - 82115-62-6 (Interferon-gamma) RN - 884KT10YB7 (Ranitidine) SB - IM MH - Adolescent MH - Adult MH - Cytokines/*blood MH - Female MH - Histamine H2 Antagonists/adverse effects/*therapeutic use MH - Humans MH - Immunoglobulin E/blood MH - Interferon-gamma/*blood MH - Interleukin-12/*blood MH - Interleukin-4/*blood MH - Male MH - Middle Aged MH - Ranitidine/adverse effects/*therapeutic use MH - Rhinitis, Allergic, Seasonal/*drug therapy/immunology MH - Treatment Outcome EDAT- 2001/02/24 12:00 MHDA- 2001/03/03 10:01 CRDT- 2001/02/24 12:00 PHST- 2001/02/24 12:00 [pubmed] PHST- 2001/03/03 10:01 [medline] PHST- 2001/02/24 12:00 [entrez] AID - 10.1097/00005537-200102000-00009 [doi] PST - ppublish SO - Laryngoscope. 2001 Feb;111(2):236-9. doi: 10.1097/00005537-200102000-00009.