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Sneezing pathway revealed
Whalley K (2021) Sneezing pathway revealed. Nat Rev Neurosci 22(8):455. doi: 10.1038/s41583-021-00491-3
Related Products: NMB-SAP (Cat. #IT-70)
Injection of anti-proBDNF attenuates hippocampal-dependent learning and memory dysfunction in mice with sepsis-associated encephalopathy
Cui YH, Zhou SF, Liu Y, Wang S, Li F, Dai RP, Hu ZL, Li CQ (2021) Injection of anti-proBDNF attenuates hippocampal-dependent learning and memory dysfunction in mice with sepsis-associated encephalopathy. Front Neurosci 15:665757. doi: 10.3389/fnins.2021.665757 PMID: 34354558
Objective: To study the effects and associated mechanism of hippocampal proBDNF in a lipopolysaccharide (LPS)-induced sepsis-associated encephalopathy (SAE) mouse model.
Summary: Mice showed cognitive dysfunction after LPS injection. The expression of proBDNF and its receptor, p75NTR, was increased in the hippocampus. The levels of BDNF and its receptor, TrkB, were decreased. An intrahippocampal or intraperitoneal injection of anti-proBDNF antibody ameliorated LPS-induced cognitive dysfunction.
Usage: Western blot (1:1000)
Related Products: NGFr (mu p75) Rabbit Polyclonal, affinity-purified (Cat. #AB-N01AP)
The medial septum as a potential target for treating brain disorders associated with oscillopathies
Takeuchi Y, Nagy AJ, Barcsai L, Li Q, Ohsawa M, Mizuseki K, Berényi A (2021) The medial septum as a potential target for treating brain disorders associated with oscillopathies. Front Neural Circuits 15:701080. doi: 10.3389/fncir.2021.701080
Summary: The medial septum (MS) may be a potential target for treating neurological and psychiatric disorders with abnormal oscillations (oscillopathies) to restore healthy patterns or erase undesired ones. The time-targeted strategy for the MS stimulation may provide an effective way of treating multiple disorders.
Usage: 192-IgG-SAP. The MS cholinergic neurons along with theta oscillations are known to be essential for memory because selective lesion of the cholinergic neurons resulted in spatial memory impairments (150 ng; Easton et al., 2011) (5.04 μg icv; Jeong et al., 2014). Orexin-SAP. The enhanced gamma oscillations and altered PPI and auditory gating created by psychoactive drugs in rats were mediated by GABAergic neurons in the MS because they were abolished by ablation of these neurons by Orexin-SAP (140 ng total bilateral; Ma et al., 2012). mu p75-SAP. Anxious environment-induced type 2 theta oscillation and associated anxiety were shown to be dependent on the MS cholinergic neurons because lesion of MS cholinergic neurons reduced them (0.65 or 1.3 µg, bilateral; Nag et al., 2009).
Related Products: 192-IgG-SAP (Cat. #IT-01), mu p75-SAP (Cat. #IT-16), Orexin-B-SAP (Cat. #IT-20)
See Also:
- Easton A et al. Medial septal cholinergic neurons are necessary for context-place memory but not episodic-like memory. Hippocampus 21(9):1021-1027, 2011.
- Jeong D et al. Improvements in memory after medial septum stimulation are associated with changes in hippocampal cholinergic activity and neurogenesis. Biomed Res Int 2014:568587, 2014.
- Ma J et al. Septohippocampal GABAergic neurons mediate the altered behaviors induced by n-methyl-D-aspartate receptor antagonists. Hippocampus 22(12):2208-2218, 2012.
- Nag N et al. Efficacy of a murine-p75-saporin immunotoxin for selective lesions of basal forebrain cholinergic neurons in mice. Neurosci Lett 452:247-251, 2009.
Can Src protein tyrosine kinase inhibitors be combined with opioid analgesics? Src and opioid-induced tolerance, hyperalgesia and addiction
Li Y, Bao Y, Zheng H, Qin Y, Hua B (2021) Can Src protein tyrosine kinase inhibitors be combined with opioid analgesics? Src and opioid-induced tolerance, hyperalgesia and addiction. Biomed Pharmacother 139:111653. doi: 10.1016/j.biopha.2021.111653
Summary: In this review the authors discuss the important role Src protein tyrosine kinase plays in the adverse consequences of clinical application of opioids
Usage: Intrathecal injection of Mac-1-SAP depletes microglial cells in the spinal dorsal horn and alleviates the loss of anti-nociception of morphine and prevents the decrease in morphine potency. This demonstrates that spinal microglial cells are necessary for morphine tolerance (15 µg; Leduc-Pessah et al., 2017).
Related Products: Mac-1-SAP mouse/human (Cat. #IT-06)
Specific phospholipid modulation by muscarinic signaling in a rat lesion model of Alzheimer’s disease
Llorente-Ovejero A, Martínez-Gardeazabal J, Moreno-Rodríguez M, Lombardero L, González de San Román E, Manuel I, Giralt MT, Rodríguez-Puertas R (2021) Specific phospholipid modulation by muscarinic signaling in a rat lesion model of Alzheimer’s disease. ACS Chem Neurosci 12(12):2167-2181. doi: 10.1021/acschemneuro.1c00169 PMID: 34037379
Objective: To evaluate the lipid composition and muscarinic signaling in brain areas related to cognitive processes.
Summary: Using a rat model of BFCN lesion, this study evaluated the lipid composition and muscarinic signaling in brain areas related to cognitive processes. Results suggest that the modulation of specific lipid metabolic routes could represent an alternative therapeutic strategy to potentiate cholinergic neurotransmission and preserve cell membrane integrity in AD.
Usage: 192-IgG-SAP was dissolved in aCSF under aseptic conditions to a final concentration of 130 ng/ml. aCSF or 192-IgG-SAP was bilaterally injected (1 ml/hemisphere) at a constant rate of 0.2 ml/min. to selectively eliminate BFCN in the NBM.
Related Products: 192-IgG-SAP (Cat. #IT-01)
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Clobetasol promotes neuromuscular plasticity in mice after motoneuronal loss via sonic hedgehog signaling, immunomodulation and metabolic rebalancing
Vicario N, Spitale FM, Tibullo D, Giallongo C, Amorini AM, Scandura G, Spoto G, Saab MW, D’Aprile S, Alberghina C, Mangione R, Bernstock JD, Botta C, Gulisano M, Buratti E, Leanza G, Zorec R, Vecchio M, Di Rosa M, Li Volti G, Lazzarino G, Parenti R, Gulino R (2021) Clobetasol promotes neuromuscular plasticity in mice after motoneuronal loss via sonic hedgehog signaling, immunomodulation and metabolic rebalancing. Cell Death Dis 12(7):625. doi: 10.1038/s41419-021-03907-1
Summary: The focal removal of confined populations of spinal MNs by injection of CTB-SAP has proven to be useful in mimicking respiratory dysfunction, dysphagia, and focal MN loss.
Related Products: CTB-SAP (Cat. #IT-14)
See Also:
- Lind LA et al. Tongue and hypoglossal morphology after intralingual cholera toxin B-saporin injection. Muscle Nerve 63(3):413-420, 2021.
- Gulino R et al. Neuromuscular plasticity in a mouse neurotoxic model of spinal motoneuronal loss. Int J Mol Sci 20(6):1500, 2019.
- Nichols N et al. Respiratory function after selective respiratory motor neuron death from intrapleural CTB-saporin injections. Exp Neurol 267:18-29, 2015.
- Gulino R et al. Expression of cell fate determinants and plastic changes after neurotoxic lesion of adult mice spinal cord by cholera toxin-B saporin. Eur J Neurosci 31(8):1423-1434, 2010.
Comparison of the effects of two therapeutic strategies based on olfactory ensheathing cell transplantation and repetitive magnetic stimulation after spinal cord injury in female mice
Delarue Q, Robac A, Massardier R, Marie JP, Guérout N (2021) Comparison of the effects of two therapeutic strategies based on olfactory ensheathing cell transplantation and repetitive magnetic stimulation after spinal cord injury in female mice. J Neurosci Res 99(7):1835-1849. doi: 10.1002/jnr.24836 PMID: 33960512
Objective: To compare two therapeutic approaches; individual primary olfactory ensheathing cell (OEC) transplantation was compared to repetitive trans-spinal magnetic stimulation (rTSMS). Then, these two therapeutic approaches were combined for tissue repair and functional recovery after spinal cord injury (SCI).
Summary: Results indicate that primary bulbar OEC transplantation and rTSMS treatment act through different mechanisms after SCI to induce functional recovery. The combination of the two therapies does not induce an additional benefit.
Usage: Flow cytometry
Related Products: NGFr (mu p75) Rabbit Polyclonal, affinity-purified (Cat. #AB-N01AP)
Cholinergic regulation of adult hippocampal neurogenesis and hippocampus-dependent functions
Madrid LI, Jimenez-Martin J, Coulson EJ, Jhaveri DJ (2021) Cholinergic regulation of adult hippocampal neurogenesis and hippocampus-dependent functions. Int J Biochem Cell Biol 134:105969. doi: 10.1016/j.biocel.2021.105969
Summary: In this review, the authors appraise the evidence linking the contribution of cholinergic signalling to the regulation of adult hippocampal neurogenesis and hippocampus-dependent functions.
Usage: A hallmark feature of all basal forebrain cholinergic neurons is the expression of high levels of the p75 neurotrophin receptor which can be precisely targeted using 192-IgG-SAP. Administration of 192-IgG-SAP (icv, 2.5 µg, Mohapel et al., 2005) resulted in significant impairment in adult hippocampal neurogenesis in rats. In contrast, a study which lesioned MS cholinergic neurons in mice reported no effect on baseline proliferation in the hippocampus. Mice received 3.6 µg of mu p75-SAP into each lateral ventricle (Ho et al., 2009). Although the number of surviving neurons was similar in both lesioned and control animals, most of the progenitor cells in the lesioned animals could not survive without cholinergic input.
Related Products: 192-IgG-SAP (Cat. #IT-01), mu p75-SAP (Cat. #IT-16)
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Vagotomy and insights into the microbiota-gut-brain axis
Liu Y, Forsythe P (2021) Vagotomy and insights into the microbiota-gut-brain axis. Neurosci Res 168:20-27. doi: 10.1016/j.neures.2021.04.001
Objective: To review the use of vagotomy as a tool to explore the role of the vagus nerve in gut to brain signaling.
Summary: This review article is a summary of the knowledge gained from vagotomy, a surgical procedure that involves removing part of the vagus nerve. The article discusses using CCK-SAP to specifically ablate afferent vagal nerves in the gastrointestinal tract.
Usage: The article references a study by Diepenbroek et al. that used CCK-SAP in the following dosages: In vitro: each well was treated with a different dose of saporin conjugates (0, 2.4, 24, or 240 ng) for 24 h. In vivo: An equal volume (rat: 1 µl; mouse: 0.5 µl) of CCK-SAP (250 ng/µl) or Saporin (250 ng/µl) was injected at two sites rostral and caudal to the laryngeal nerve branch.
Related Products: CCK-SAP (Cat. #IT-31), Saporin (Cat. #PR-01)
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Cholinergic signaling, neural excitability, and epilepsy
Wang Y, Tan B, Wang Y, Chen Z (2021) Cholinergic signaling, neural excitability, and epilepsy. Molecules 26(8):2258. doi: 10.3390/molecules26082258
Summary: In this review, the authors briefly describe the distribution of cholinergic neurons, muscarinic, and nicotinic receptors in the central nervous system and their relationship with neural excitability and epilepsy. intraventricular administration of 192-IgG-SAP, which inhibits cholinergic projection to the hippocampus and cortex respectively, facilitates seizure induced by amygdala kindling
Usage: Ferencz et al. used 192-IgG-SAP (2.5 μg icv) to investigate the effect of eliminating cholinergic projections to the hippocampal formation and cerebral cortex on the induction of epilepsy through electrical stimulation of the rat brain. They determined that the loss of specific projections to the amygdala accelerates development of seizures.
Related Products: 192-IgG-SAP (Cat. #IT-01)