PMID- 10514401 OWN - NLM STAT- MEDLINE DCOM- 19991104 LR - 20181113 IS - 0002-9440 (Print) IS - 1525-2191 (Electronic) IS - 0002-9440 (Linking) VI - 155 IP - 4 DP - 1999 Oct TI - Abundant production of brain-derived neurotrophic factor by adult visceral epithelia. Implications for paracrine and target-derived Neurotrophic functions. PG - 1183-93 AB - Brain-derived neurotrophic factor (BDNF) plays a crucial role for the survival of visceral sensory neurons during development. However, the physiological sources and the function of BDNF in the adult viscera are poorly described. We have investigated the cellular sources and the potential role of BDNF in adult murine viscera. We found markedly different amounts of BDNF protein in different organs. Surprisingly, BDNF levels in the urinary bladder, lung, and colon were higher than those found in the brain or skin. In situ hybridization experiments revealed that BDNF mRNA was made by visceral epithelial cells, several types of smooth muscle, and neurons of the myenteric plexus. Epithelia that expressed BDNF lacked both the high- and low-affinity receptors for BDNF, trkB and p75(NTR). In contrast, both receptors were present on neurons of the peripheral nervous system. Studies with BDNF-/-mice demonstrated that epithelial and smooth muscle cells developed normally in the absence of BDNF. These data provide evidence that visceral epithelia are a major source, but not a target, of BDNF in the adult viscera. The abundance of BDNF protein in certain internal organs suggests that this neurotrophin may regulate the function of adult visceral sensory and motor neurons. FAU - Lommatzsch, M AU - Lommatzsch M AD - Department of Laboratory Medicine, Charite, Humboldt University, Berlin, Germany. FAU - Braun, A AU - Braun A FAU - Mannsfeldt, A AU - Mannsfeldt A FAU - Botchkarev, V A AU - Botchkarev VA FAU - Botchkareva, N V AU - Botchkareva NV FAU - Paus, R AU - Paus R FAU - Fischer, A AU - Fischer A FAU - Lewin, G R AU - Lewin GR FAU - Renz, H AU - Renz H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Pathol JT - The American journal of pathology JID - 0370502 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (RNA, Messenger) RN - 0 (Receptor, Nerve Growth Factor) RN - EC 2.7.10.1 (Receptor, trkB) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/*biosynthesis/blood/physiology/urine MH - Cardiovascular System/metabolism MH - Digestive System/metabolism MH - Enzyme-Linked Immunosorbent Assay MH - Epithelial Cells/metabolism MH - Female MH - In Situ Hybridization MH - Mice MH - Mice, Inbred BALB C MH - Mice, Knockout MH - Paracrine Communication/physiology MH - RNA, Messenger/biosynthesis MH - Receptor, Nerve Growth Factor/metabolism MH - Receptor, trkB/metabolism MH - Respiratory System/metabolism MH - Urogenital System/metabolism MH - Viscera/*metabolism PMC - PMC1867012 EDAT- 1999/10/09 00:00 MHDA- 1999/10/09 00:01 PMCR- 2000/04/01 CRDT- 1999/10/09 00:00 PHST- 1999/10/09 00:00 [pubmed] PHST- 1999/10/09 00:01 [medline] PHST- 1999/10/09 00:00 [entrez] PHST- 2000/04/01 00:00 [pmc-release] AID - S0002-9440(10)65221-2 [pii] AID - 1902 [pii] AID - 10.1016/S0002-9440(10)65221-2 [doi] PST - ppublish SO - Am J Pathol. 1999 Oct;155(4):1183-93. doi: 10.1016/S0002-9440(10)65221-2.