PMID- 16181614 OWN - NLM STAT- MEDLINE DCOM- 20060404 LR - 20240312 IS - 0006-3223 (Print) IS - 0006-3223 (Linking) VI - 59 IP - 4 DP - 2006 Feb 15 TI - Brain-derived neurotrophic factor and autoantibodies to neural antigens in sera of children with autistic spectrum disorders, Landau-Kleffner syndrome, and epilepsy. PG - 354-63 AB - BACKGROUND: Brain derived neurotrophic factor (BDNF) elevation in newborn sera predicts intellectual/social developmental abnormalities. Other autoantibodies (AAs) to endothelial cells (ECs) and myelin basic protein (MBP) are also elevated in some children. We tested relationships between BDNF, BDNF AAs, and other AAs in children with these disorders. METHODS: BDNF levels and IgG/IgM autoantibodies to BDNF, ECs, MBP, and histones were measured in children with autism, childhood disintegrative disorder (CDD), pervasive developmental delay-not otherwise specified (PDD-nos), acquired epilepsy, Landau-Kleffner syndrome (LKS); healthy children (HC), and children with non-neurological illnesses (NNI). RESULTS: Mean BDNF levels were elevated in children with autism and CDD, (p < or = 0.0002) compared to HC or NNI. Mean IgG and IgM BDNF AAs were elevated in children with autism, CDD and epilepsy (p < or = 0.0005) compared to HC but not to NNI. Mean IgM AA EC titers detected by immunocytochemistry were higher in autism, PDD-NOS, epilepsy, and LKS (p < or = 0.005) compared to HC and NNI. While mean ELISA IgG EC AAs were higher in autism and PPD-NOS (p < 0.005) compared to HC but not NNI, ELISA IgM EC AAs were higher in children with autism, CDD, PDD-NOS, and epilepsy compared to both HC and NNI (p < 0.0005). Mean anti-MBP IgG and IgM titers were higher in all study groups (p < 0.005) except for LKS compared to both HC and NNI. CONCLUSION: Children with developmental disorders and epilepsy have higher AAs to several neural antigens compared to controls. The presence of both BDNF AAs and elevated BDNF levels in some children with autism and CDD suggests a previously unrecognized interaction between the immune system and BDNF. FAU - Connolly, Anne M AU - Connolly AM AD - Department of Neurology and Pediatrics, Washington University School of Medicine, St. Louis, Missouri 63110, USA. FAU - Chez, Michael AU - Chez M FAU - Streif, Elizabeth M AU - Streif EM FAU - Keeling, Richard M AU - Keeling RM FAU - Golumbek, Paul T AU - Golumbek PT FAU - Kwon, Jennifer M AU - Kwon JM FAU - Riviello, James J AU - Riviello JJ FAU - Robinson, Ricki G AU - Robinson RG FAU - Neuman, Rosalind J AU - Neuman RJ FAU - Deuel, Ruth Mary K AU - Deuel RM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20050921 PL - United States TA - Biol Psychiatry JT - Biological psychiatry JID - 0213264 RN - 0 (Antibodies, Antinuclear) RN - 0 (Autoantibodies) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Histones) RN - 0 (Immunoglobulin G) RN - 0 (Immunoglobulin M) RN - 0 (Myelin Basic Protein) SB - IM MH - Antibodies, Antinuclear/analysis MH - Autistic Disorder/*immunology/*metabolism MH - Autoantibodies/analysis/*immunology MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Cells, Cultured MH - Cerebral Cortex/immunology/metabolism MH - Child MH - Child, Preschool MH - Cohort Studies MH - Endothelial Cells/metabolism MH - Enzyme-Linked Immunosorbent Assay MH - Epilepsy/*immunology MH - Female MH - Histones/immunology/metabolism MH - Humans MH - Immunoglobulin G/analysis/immunology MH - Immunoglobulin M/analysis/immunology MH - Immunohistochemistry MH - Landau-Kleffner Syndrome/*immunology/*metabolism MH - Male MH - Myelin Basic Protein/immunology/metabolism MH - Nervous System/*immunology/*metabolism MH - Umbilical Veins/cytology EDAT- 2005/09/27 09:00 MHDA- 2006/04/06 09:00 CRDT- 2005/09/27 09:00 PHST- 2005/01/19 00:00 [received] PHST- 2005/06/10 00:00 [revised] PHST- 2005/07/01 00:00 [accepted] PHST- 2005/09/27 09:00 [pubmed] PHST- 2006/04/06 09:00 [medline] PHST- 2005/09/27 09:00 [entrez] AID - S0006-3223(05)00851-6 [pii] AID - 10.1016/j.biopsych.2005.07.004 [doi] PST - ppublish SO - Biol Psychiatry. 2006 Feb 15;59(4):354-63. doi: 10.1016/j.biopsych.2005.07.004. Epub 2005 Sep 21.