2008
DOI: 10.1254/jphs.08037fp
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Levocetirizine Modulates Lymphocyte Activation in Patients With Allergic Rhinitis

Abstract: Abstract. Levocetirizine, a second generation non-sedating antihistamine that blocks the H 1 histamine receptor, may exhibit immunoregulatory properties that augment its primary pharmacological mechanism. To investigate this possibility, 13 Kuwaiti seasonal allergic rhinitis (SAR) patients were treated with levocetirizine for four weeks in comparison with a 7-member placebotreated control group, followed by clinical evaluation and flow cytometric analysis of peripheral venous blood for inflammatory cell and ly… Show more

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Cited by 18 publications
(9 citation statements)
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“…4 ). Treatment with Levocetirizine 0.02% for 72 h reduced the proportion of CD4 + /CD25 + cells, as previously described [19] (data not shown) and increased the differentiation of CD4 + /CD25 + cells to Treg cells.…”
Section: Resultssupporting
confidence: 86%
“…4 ). Treatment with Levocetirizine 0.02% for 72 h reduced the proportion of CD4 + /CD25 + cells, as previously described [19] (data not shown) and increased the differentiation of CD4 + /CD25 + cells to Treg cells.…”
Section: Resultssupporting
confidence: 86%
“…It also inhibits migration inhibitory factor (MIF)(18) as well as interleukin 8 (IL‐8) and leukotriene B4 (LTB4) production and induces the production of PGE2, a suppressor of antigen presentation and major histocompatibility complex (MHC) class II expression, from monocyte/macrophages (19), reduces the chemotaxis of monocytes and T lymphocytes (20). Moreover CTZ and its parent compound levocetirizine are reported to modulate the activation of T cells and their production of pro‐inflammatory cytokines (21,22); (iii) CTZ reduces the number of tryptase‐positive MC in inflammation sites (13). MC, increased in their number and activation state in LP (4,5) and in LPP, as we have shown (FIG.…”
Section: Discussionmentioning
confidence: 99%
“…12,14 Evidence of anti-inflammatory effect is conflicting due to variety of measured immunologic parameters, inconsistent results and disconnect from efficacy measures. [31][32][33] Under controlled conditions of an EEU or EEC, anti-histaminic effects of LCZ were seen in wheal-and-flare responses vs. PLA, DSL, and MLK 18-20 although these wheal-and-flare tests may not be the best way to prove clinical efficacy of medications used to treat AR. 64 Eight studies, examining 3230 patients, were included in this review of efficacy and QOL of LCZ in patients with SAR.…”
Section: Discussionmentioning
confidence: 99%
“…No significant change in any of cell populations occurred in PLA group. 32 In a study of patients (n = 30) with SAR given LCZ 5 mg/day, 33 DSL 5 mg/day or PLA for 2 weeks, IL-4 levels were reduced by both LCZ and DSL vs. baseline (P = 0.041 and P = 0.044) while only LCZ reduced IL-8 levels when compared to baseline (P = 0.02). LCZ was found to reduce eosinophil counts compared with DSL and PLA (P = 0.008, P = 0.0002), and DSL also reduced eosinophil counts compared with PLA (P = 0.0007).…”
Section: Immunologic Effectsmentioning
confidence: 99%