PMID- 8354693 OWN - NLM STAT- MEDLINE DCOM- 19930922 LR - 20190508 IS - 0021-9525 (Print) IS - 1540-8140 (Electronic) IS - 0021-9525 (Linking) VI - 122 IP - 5 DP - 1993 Sep TI - Neurotrophins and their receptors in rat peripheral trigeminal system during maxillary nerve growth. PG - 1053-65 AB - We examined the expression of the neurotrophins (NTFs) and their receptor mRNAs in the rat trigeminal ganglion and the first branchial arch before and at the time of maxillary nerve growth. The maxillary nerve appears first at embryonic day (E)10 and reaches the epithelium of the first branchial arch at E12, as revealed by anti-L1 immunohistochemistry. In situ hybridization demonstrates, that at E10-E11, neurotrophin-3 (NT-3) mRNA is expressed mainly in the mesenchyme, but neurotrophin-4 (NT-4) mRNA in the epithelium of the first branchial arch. NGF and brain-derived neurotrophic factor (BDNF) mRNAs start to be expressed in the distal part of the first brachial arch shortly before its innervation by the maxillary nerve. Trigeminal ganglia strongly express the mRNA of trkA at E10 and thereafter. The expression of mRNAs for low-affinity neurotrophin receptor (LANR), trkB, and trkC in trigeminal ganglia is weak at E10, but increases by E11-E12. NT-3, NT-4, and more prominently BDNF, induce neurite outgrowth from explant cultures of the E10 trigeminal ganglia but no neurites are induced by NGF, despite the expression of trkA. By E12, the neuritogenic potency of NGF also appears. The expression of NT-3 and NT-4 and their receptors in the trigeminal system prior to target field innervation suggests that these NTFs have also other functions than being the target-derived trophic factors. FAU - Arumae, U AU - Arumae U AD - Laboratory of Molecular Neurobiology, University of Helsinki, Finland. FAU - Pirvola, U AU - Pirvola U FAU - Palgi, J AU - Palgi J FAU - Kiema, T R AU - Kiema TR FAU - Palm, K AU - Palm K FAU - Moshnyakov, M AU - Moshnyakov M FAU - Ylikoski, J AU - Ylikoski J FAU - Saarma, M AU - Saarma M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Cell Biol JT - The Journal of cell biology JID - 0375356 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Nerve Growth Factors) RN - 0 (Nerve Tissue Proteins) RN - 0 (Neurotrophin 3) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Nerve Growth Factor) RN - P658DCA9XD (neurotrophin 4) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor MH - Culture Techniques MH - Embryo, Mammalian/chemistry/innervation MH - Embryonic and Fetal Development MH - Female MH - In Situ Hybridization MH - Male MH - Maxillary Nerve/chemistry/*growth & development/physiology MH - Nerve Growth Factors/*analysis/genetics/physiology MH - Nerve Tissue Proteins/analysis/genetics/physiology MH - Neurotrophin 3 MH - RNA, Messenger/analysis/genetics MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, Nerve Growth Factor/*analysis/genetics/physiology MH - Trigeminal Ganglion/*chemistry/physiology/ultrastructure PMC - PMC2119635 EDAT- 1993/09/01 00:00 MHDA- 1993/09/01 00:01 PMCR- 1994/03/01 CRDT- 1993/09/01 00:00 PHST- 1993/09/01 00:00 [pubmed] PHST- 1993/09/01 00:01 [medline] PHST- 1993/09/01 00:00 [entrez] PHST- 1994/03/01 00:00 [pmc-release] AID - 93359503 [pii] AID - 10.1083/jcb.122.5.1053 [doi] PST - ppublish SO - J Cell Biol. 1993 Sep;122(5):1053-65. doi: 10.1083/jcb.122.5.1053.