PMID- 25452672 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20141202 LR - 20231104 IS - 0972-7531 (Print) IS - 0976-3260 (Electronic) IS - 0972-7531 (Linking) VI - 21 IP - 4 DP - 2014 Oct TI - Brain-Derived Neurotrophic Factor in children with Autism Spectrum Disorder. PG - 129-33 LID - 10.5214/ans.0972.7531.210403 [doi] AB - BACKGROUND: Autism Spectrum Disorder (ASD) is a complex neurobehavioral syndrome with no known biomarker so far for early detection. It has been challenging, both to classify typical autism and associate a suitable biomarker with clinical phenotype spectrum. Brain-derived neurotrophic factor (BDNF) has emerged as a key neurotrophin regulating synaptic plasticity, neuronal differentiation and survival. PURPOSE: Recently, BDNF depletion is reported in neurodegenerative as well as in psychiatric disorders, associated with severity of neurological dysfunction. Role of BDNF as a biomarker in ASD is gaining significance. Pre-clinical results have linked BDNF depletion in autism and mental retardation, however, with conflicting findings. METHODS: In view of this, a preliminary study was carried out to measure serum BDNF levels in 48 children with ASD and mental retardation, and 29 age-matched controls. RESULTS: Serum BDNF levels were found significantly higher (p<0.001) in atypical autistic subjects (clinically milder phenotype) as compared to controls, but not in typical ASD cases (clinically severe phenotype). BDNF levels were significantly lower in females with typical/Rett Syndrome (p<0.05), but not in males with typical autism (p>0.1), as compared to controls. Lower BDNF levels indicate impairment in neuroprotective mechanism, while higher levels may imply a manifested protective response. CONCLUSION: Our study highlights the differential BDNF response based on the severity of neurobehavioral deficit, indicating a possible neuroprotective role of this molecule and supporting its exploration in targeted therapy in ASD. FAU - Kasarpalkar, Nikhil J AU - Kasarpalkar NJ AD - Department of Biochemistry; FAU - Kothari, Sweta T AU - Kothari ST AD - Department of Virology; FAU - Dave, Usha P AU - Dave UP AD - Haffkine Institute and Director- MILS International India, Mumbai. LA - eng PT - Journal Article PL - United States TA - Ann Neurosci JT - Annals of neurosciences JID - 101523367 PMC - PMC4248479 OTO - NOTNLM OT - BDNF OT - Biomarker OT - Disorder COIS- Conflict of Interests: None: Source of funding: None. EDAT- 2014/12/03 06:00 MHDA- 2014/12/03 06:01 PMCR- 2014/10/01 CRDT- 2014/12/03 06:00 PHST- 2014/04/09 00:00 [received] PHST- 2014/07/25 00:00 [revised] PHST- 2014/09/14 00:00 [accepted] PHST- 2014/12/03 06:00 [entrez] PHST- 2014/12/03 06:00 [pubmed] PHST- 2014/12/03 06:01 [medline] PHST- 2014/10/01 00:00 [pmc-release] AID - 210403 [pii] AID - 10.5214/ans.0972.7531.210403 [doi] PST - ppublish SO - Ann Neurosci. 2014 Oct;21(4):129-33. doi: 10.5214/ans.0972.7531.210403.