PMID- 19250325 OWN - NLM STAT- MEDLINE DCOM- 20090901 LR - 20171116 IS - 1468-3083 (Electronic) IS - 0926-9959 (Linking) VI - 23 IP - 6 DP - 2009 Jun TI - B7-2/CD28 costimulatory pathway in children with atopic dermatitis and its connection with immunoglobulin E, intracellular interleukin-4 and interferon-gamma production by T cells during a 1-month follow-up. PG - 656-9 LID - 10.1111/j.1468-3083.2009.03133.x [doi] AB - BACKGROUND: The best defined costimulators for activation of T lymphocytes are B7-1 and B7-2 on antigen presenting cells (APC) that bind to CD28 on T cells. Several studies showed that CD28 is critical for type 2 T helper cells (Th2) inflammation and depends mainly on the interaction of CD28 with B7-2. Some authors suggested a role for B7-2 B cells in immunoglobulin E (IgE) synthesis. OBJECTIVE: We decided to study B7-2/CD28 interaction in atopic dermatitis (AD) and correlations with total and specific IgE, intracellular interleukin 4-(IL-4) and interferon-gamma (IFN-gamma) production during a 1-month follow-up. METHODS: We studied 24 AD children with allergy to cow's milk. Lymphocyte subsets (B7-2 on B cells, CD28(+) on T cells, IL-4 and IFN-gamma producing T helper cells), total and specific IgE, and IgG4 at days 1 and 30 were also studied. Scoring of atopic dermatitis (SCORAD) significantly decreased. RESULTS: CD28(+)/CD3(+)/CD57 correlated with B7-2 B cells at days 1 and 30, with IL-4 and IFN-gamma producing T helper cells at day 1 and with SCORAD at day 30. B7-2 B cells negatively correlated with IgE at day 30. Percentage of B7-2 B cells negatively correlated with total and specific IgE at day 30. CONCLUSION: Our results support the importance of CD28/B7 costimulation in AD children and the relation of CD28 with Th1 and Th2 cytokines. However, our results do not confirm the hypothesis about the preferential role of B7-2 in Th2 activation and IgE synthesis. It could raise a question about B7-2 blockade efficacy in AD children. Further investigations on B7 family members and their functions could help to distinguish target for more clinically efficient B7/CD28 blockage in AD. FAU - Chernyshov, P V AU - Chernyshov PV AD - Department of Dermatology and Venereology, National Medical University, Kiev, Ukraine. chernyshovpavel@ukr.net LA - eng PT - Journal Article DEP - 20090224 PL - England TA - J Eur Acad Dermatol Venereol JT - Journal of the European Academy of Dermatology and Venereology : JEADV JID - 9216037 RN - 0 (B7-1 Antigen) RN - 0 (CD28 Antigens) RN - 207137-56-2 (Interleukin-4) RN - 37341-29-0 (Immunoglobulin E) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - B7-1 Antigen/*immunology MH - CD28 Antigens/*immunology MH - Child, Preschool MH - Dermatitis, Atopic/*immunology MH - Flow Cytometry MH - Humans MH - Immunoglobulin E/*biosynthesis MH - Infant MH - Interferon-gamma/*biosynthesis MH - Interleukin-4/*biosynthesis MH - Lymphocyte Subsets MH - T-Lymphocytes/immunology/*metabolism EDAT- 2009/03/03 09:00 MHDA- 2009/09/02 06:00 CRDT- 2009/03/03 09:00 PHST- 2009/03/03 09:00 [entrez] PHST- 2009/03/03 09:00 [pubmed] PHST- 2009/09/02 06:00 [medline] AID - JDV3133 [pii] AID - 10.1111/j.1468-3083.2009.03133.x [doi] PST - ppublish SO - J Eur Acad Dermatol Venereol. 2009 Jun;23(6):656-9. doi: 10.1111/j.1468-3083.2009.03133.x. Epub 2009 Feb 24.