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Nicotine compensates for the loss of cholinergic function to enhance long-term potentiation induction
Yamazaki Y, Hamaue N, Sumikawa K (2002) Nicotine compensates for the loss of cholinergic function to enhance long-term potentiation induction. Brain Res 946(1):148-152. doi: 10.1016/s0006-8993(02)02935-9 PMID: 12133604
Objective: Investigate the mechanisms of how cholinergic lesions impair the induction of long-term potentiation (LTP) and how nicotine can reverse the effects.
Summary: LTP in the hippocampal CA1 region is involved in learning and memory and its induction depends on the activation of N-methyl-D-aspartate receptors (NMDARs). Nicotine is shown to reverse memory deficits caused by lesioning of the cholinergic system, but the mechanism for this observation is unknown. The authors use 192-IgG-SAP to induce cholinergic lesioning, which impairs LTP induction. The authors suggest the compensatory action of nicotine is a via enhancement of NMDAR responses mediated by nicotine-induced disinhibition of pyramidal cells.
Usage: 2 ug of 192-IgG-Saporin (Cat. IT-01) were injected into the lateral ventricle of rats.
Related Products: 192-IgG-SAP (Cat. #IT-01)
In vivo labeling of rabbit cholinergic basal forebrain neurons with fluorochromated antibodies.
Hartig W, Varga C, Kacza J, Grosche J, Seeger J, Luiten PG, Brauer K, Harkany T (2002) In vivo labeling of rabbit cholinergic basal forebrain neurons with fluorochromated antibodies. NeuroReport 13(11):1395-1398. doi: 10.1097/00001756-200208070-00009 PMID: 12167760
Summary: To investigate in vivo labeling of p75 low-affinity neurotrophin receptor the authors conjugated Cy3 to ME20.4 (Cat. #AB-N07) and performed either unilateral or bilateral icv injections in rabbits. The antibody labeled only cholinergic neurons demonstrating its potential as a p75 marker.
Related Products: NGFr (ME20.4, p75) Mouse Monoclonal (Cat. #AB-N07)
Effect of 192 IgG-saporin on circadian activity rhythms, expression of P75 neurotrophin receptors, calbindin-D28K, and light-induced Fos in the suprachiasmatic nucleus in rats.
Beaule C, Amir S (2002) Effect of 192 IgG-saporin on circadian activity rhythms, expression of P75 neurotrophin receptors, calbindin-D28K, and light-induced Fos in the suprachiasmatic nucleus in rats. Exp Neurol 176(2):377-389. doi: 10.1006/exnr.2002.7969
Summary: The authors used bilateral icv injections of 200 ng of 192-Saporin (Cat. #IT-01) to investigate the contribution of p75NTR-expressing neurons to the determination of a circadian rhythm. The data show that p75NTR-expressing neurons are not essential for this process.
Related Products: 192-IgG-SAP (Cat. #IT-01)
Reduced aversion to oral capsaicin following neurotoxic destruction of superficial medullary neurons expressing NK-1 receptors.
Simons CT, Gogineni AG, Iodi Carstens M, Carstens E (2002) Reduced aversion to oral capsaicin following neurotoxic destruction of superficial medullary neurons expressing NK-1 receptors. Brain Res 945:139-143. doi: 10.1016/s0006-8993(02)02913-x
Summary: Capsaicin-induced irritation of the dorsal anterior tongue is mediated by nociceptors expressing VR-1 receptors. The role of NK-1 receptor-expressing neurons during the ingestion of capsaicin was examined by injecting 20 µl of 2.27 µM SP-SAP (Cat. #IT-07) into the cisterna magna of rats. Lesioned rats consumed significantly more water containing high concentrations of capsaicin than control animals.
Related Products: SP-SAP (Cat. #IT-07)
Reactivity to object and spatial novelty is normal in older Ts65Dn mice that model Down syndrome and Alzheimer’s disease.
Hyde LA, Crnic LS (2002) Reactivity to object and spatial novelty is normal in older Ts65Dn mice that model Down syndrome and Alzheimer’s disease. Brain Res 945:26-30. doi: 10.1016/s0006-8993(02)02500-3 PMID: 12113948
Summary: The authors hypothesized that a mouse model for Down syndrome may show some of the same cognitive deficits exhibited by rats lesioned with 192-Saporin (Cat. #IT-01), which eliminates cholinergic cells in the basal forebrain. The results suggest that in this Down syndrome model, cell loss has a much greater cognitive effect if it happens early in development as opposed to in adulthood.
Related Products: 192-IgG-SAP (Cat. #IT-01)
Targeting serotonin re-uptake transporter (SERT) -expressing cells with a monoclonal antibody to an epitope from the extracellular domain of SERT: Results with a saporin conjugate.
Lappi D, Kohls M, Majer K, Russell B, Blakely R Richerson G (2002) Targeting serotonin re-uptake transporter (SERT) -expressing cells with a monoclonal antibody to an epitope from the extracellular domain of SERT: Results with a saporin conjugate. FENS 2002 Abstracts 049.7. Federation of European Neuroscience Societies, Paris, France. PMID: 0
Related Products: Antibody to Serotonin Transporter (SERT, Cat. #AB-N09), Anti-SERT-SAP (Cat. #IT-23)
Effects of mice EGF-responsive neural stem cells grafts and fetal septal cells grafts implanted into the dorsal hippocampus of rats after immunotoxic denervation
Jeltsch H, Aloy E, Schimchowitsch S, Caillard S, Mohier E Cassel JC (2002) Effects of mice EGF-responsive neural stem cells grafts and fetal septal cells grafts implanted into the dorsal hippocampus of rats after immunotoxic denervation. FENS 2002 Abstracts 141.13. Federation of European Neuroscience Societies, Paris, France.
Related Products: 192-IgG-SAP (Cat. #IT-01)
Selective lesioning of the developing cholinergic and noradrenergic systems: Anatomical, neurochemical and functional effects
Leanza G, Cataudella T (2002) Selective lesioning of the developing cholinergic and noradrenergic systems: Anatomical, neurochemical and functional effects. FENS 2002 Abstracts 151.12. Federation of European Neuroscience Societies, Paris, France.
Related Products: Anti-DBH-SAP (Cat. #IT-03)
Selective neonatal lesions of the basal forebrain cholinergic neurons impair memory of socially-transmitted food preferences in adult rats
Ricceri L, Moles A, Scattoni ML, Calamandrei G (2002) Selective neonatal lesions of the basal forebrain cholinergic neurons impair memory of socially-transmitted food preferences in adult rats. FENS 2002 Abstracts 209.4. Federation of European Neuroscience Societies, Paris, France.
Related Products: 192-IgG-SAP (Cat. #IT-01)
Impairment and restoration of spatial abilities following 192 IgG-saporin or quisqualic acid lesions of the median septum in rats
Brandner C (2002) Impairment and restoration of spatial abilities following 192 IgG-saporin or quisqualic acid lesions of the median septum in rats. FENS 2002 Abstracts 210.3. Federation of European Neuroscience Societies, Paris, France.
Related Products: 192-IgG-SAP (Cat. #IT-01)
