PMID- 18037433 OWN - NLM STAT- MEDLINE DCOM- 20080403 LR - 20220331 IS - 1095-8584 (Electronic) IS - 0022-2828 (Linking) VI - 44 IP - 2 DP - 2008 Feb TI - Differential expression of cardiac neurotrophic factors and sympathetic nerve ending abnormalities within the failing heart. PG - 380-7 AB - In congestive heart failure (CHF), cardiac sympathetic nerve endings transdifferentiate from a balanced norepinephrine (NE) storage/release/uptake apparatus to a nerve that predominantly releases NE. Little is known about the neurotrophic factors that may trigger this process. In the present study, we evaluated the cardiac expression pattern of nerve growth factor (NGF), neurotrophin-3 (NT-3), brain-derived neurotrophic factor (BDNF) and ciliary neurotrophic factor (CNTF) in salt-sensitive Dahl rats (DS), which are characterized by profound alterations of the cardiac sympathetic nervous system. Experiments were performed in male DS and salt-resistant Dahl rats (DR) 30, 40 and 50 days after onset of high-salt intake. The sympathetic nerve density was measured by glyoxylic acid-induced histofluorescence. Cardiac NE re-uptake was assessed by isolated heart perfusion with [(3)H]-NE and norepinephrine transporter (NET) mRNA by real-time PCR. Cardiac expression of neurotrophic factors was determined by ribonuclease protection assay and Western blot analysis. DS rats displayed reduced left ventricular sympathetic nerve endings 40 days after onset of high-salt intake, which was preceded by an impaired cardiac [(3)H]-NE uptake. NGF, a positive regulator of NE re-uptake, and NT-3 were down-regulated already 30 days after onset of high-salt intake, whereas BDNF and CNTF protein expression were increased not before 40 days after onset of high-salt intake. In conclusion, during the development of CHF, a dysregulated NE storage/release/uptake apparatus within the sympathetic nerve endings might be triggered by differential expression of cardiac neurotrophic factors. FAU - Kreusser, Michael M AU - Kreusser MM AD - Department of Cardiology, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany. FAU - Buss, Sebastian J AU - Buss SJ FAU - Krebs, Jutta AU - Krebs J FAU - Kinscherf, Ralf AU - Kinscherf R FAU - Metz, Jurgen AU - Metz J FAU - Katus, Hugo A AU - Katus HA FAU - Haass, Markus AU - Haass M FAU - Backs, Johannes AU - Backs J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20071126 PL - England TA - J Mol Cell Cardiol JT - Journal of molecular and cellular cardiology JID - 0262322 RN - 0 (Nerve Growth Factors) RN - 0 (Norepinephrine Plasma Membrane Transport Proteins) RN - 0 (RNA, Messenger) RN - 10028-17-8 (Tritium) RN - X4W3ENH1CV (Norepinephrine) SB - IM MH - Animals MH - Body Weight MH - *Gene Expression Profiling MH - Gene Expression Regulation MH - Heart Failure/*genetics MH - Heart Ventricles/metabolism MH - Myocardium/*metabolism/*pathology MH - Nerve Endings/*abnormalities MH - Nerve Growth Factors/*genetics/metabolism MH - Norepinephrine/metabolism MH - Norepinephrine Plasma Membrane Transport Proteins/genetics/metabolism MH - Organ Size MH - RNA, Messenger/genetics/metabolism MH - Rats MH - Rats, Inbred Dahl MH - Sympathetic Nervous System/*abnormalities MH - Tritium EDAT- 2007/11/27 09:00 MHDA- 2008/04/04 09:00 CRDT- 2007/11/27 09:00 PHST- 2006/10/15 00:00 [received] PHST- 2007/09/27 00:00 [revised] PHST- 2007/10/18 00:00 [accepted] PHST- 2007/11/27 09:00 [pubmed] PHST- 2008/04/04 09:00 [medline] PHST- 2007/11/27 09:00 [entrez] AID - S0022-2828(07)01285-0 [pii] AID - 10.1016/j.yjmcc.2007.10.019 [doi] PST - ppublish SO - J Mol Cell Cardiol. 2008 Feb;44(2):380-7. doi: 10.1016/j.yjmcc.2007.10.019. Epub 2007 Nov 26.