PMID- 12600751 OWN - NLM STAT- MEDLINE DCOM- 20031027 LR - 20190826 IS - 0165-2478 (Print) IS - 0165-2478 (Linking) VI - 86 IP - 1 DP - 2003 Mar 3 TI - Impaired thymic output and restricted T-cell repertoire in two infants with immunodeficiency and early-onset generalized dermatitis. PG - 93-7 AB - We evaluated the T-cell repertoire and the thymic output in two infants, one with Omenn Syndrome (OS) and another with complete DiGeorge Syndrome (DGS), who developed generalized dermatitis. The patients shared common T-cell abnormalities, as demonstrated by the low response to mitogenic stimulation, by an unusual usage of specific T-cell receptor (TCR) segments, and by a reduction of TCR diversity in both alpha/beta and gamma/delta populations. Furthermore, they both showed an impaired thymic function, as assessed by the low number of TCR recombination excision circles, which are formed from excised DNA during the rearrangement of TCR genes. These data indicated that generalized erythrodermia may be present in different forms of T-cell immunodeficiency and may reflect intrinsic defects in either V(D)J recombination or in thymic development, leading to the peripheral expansion of T-cell clonotypes, that bear peculiar TCR chains. FAU - Pirovano, S AU - Pirovano S AD - Terzo Servizio Analisi, Spedali Civili of Brescia, Brescia, Italy. FAU - Mazzolari, E AU - Mazzolari E FAU - Pasic, S AU - Pasic S FAU - Albertini, A AU - Albertini A FAU - Notarangelo, Luigi D AU - Notarangelo LD FAU - Imberti, L AU - Imberti L LA - eng PT - Case Reports PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Immunol Lett JT - Immunology letters JID - 7910006 RN - 0 (Receptors, Antigen, T-Cell) SB - IM MH - Common Variable Immunodeficiency/*complications/congenital/*immunology/physiopathology MH - Dermatitis/*etiology MH - DiGeorge Syndrome/*complications/congenital/*immunology/physiopathology MH - Female MH - Gene Amplification MH - Gene Rearrangement, T-Lymphocyte MH - Humans MH - Infant MH - Infant, Newborn MH - Male MH - Receptors, Antigen, T-Cell/genetics/immunology MH - T-Lymphocytes/*pathology MH - Thymus Gland/*physiopathology EDAT- 2003/02/26 04:00 MHDA- 2003/10/28 05:00 CRDT- 2003/02/26 04:00 PHST- 2003/02/26 04:00 [pubmed] PHST- 2003/10/28 05:00 [medline] PHST- 2003/02/26 04:00 [entrez] AID - S0165247802002912 [pii] AID - 10.1016/s0165-2478(02)00291-2 [doi] PST - ppublish SO - Immunol Lett. 2003 Mar 3;86(1):93-7. doi: 10.1016/s0165-2478(02)00291-2.