Skip to main content
Erschienen in: Journal of Neuro-Oncology 1/2009

01.01.2009 | Laboratory Investigation- Human/Animal Tissue

Zhangfei induces the expression of the nerve growth factor receptor, trkA, in medulloblastoma cells and causes their differentiation or apoptosis

verfasst von: Ximena Valderrama, Noreen Rapin, Valerie M. K. Verge, Vikram Misra

Erschienen in: Journal of Neuro-Oncology | Ausgabe 1/2009

Einloggen, um Zugang zu erhalten

Abstract

Interactions between nerve growth factor (NGF) and its receptor—the tropomyosin related kinase A (trkA)—regulate many neuronal functions including the correct development of sensory neurons during embryogenesis, the survival of sensory neurons and the differentiation and apoptosis of neuronal tumours. Zhangfei is a transcriptional factor that is expressed in differentiated neurons. Since we could detect Zhangfei in mature neurons but not in neuronal tumour cells, we hypothesised that ectopic expression of the protein in medulloblastoma cells may induce the differentiation of these cells. We show that in ONS-76 medulloblastoma cells, resveratrol, an inducer of apoptosis and differentiation, increased the expression of Zhangfei, trkA and Early Growth Response Gene 1 (Egr1), a gene normally activated by NGF–trkA signalling. ONS-76 cells stopped growing soon after treatment with resveratrol. While the induction of Zhangfei in resveratrol-treated cells was modest albeit consistent, the infection of actively growing medulloblastoma cells with an adenovirus vector expressing Zhangfei mimicked some of the effects of resveratrol. Ectopically expressed Zhangfei in ONS-76 cells led to the increased expression of trkA and Egr1, phosphorylation of extracellular signal-regulated kinase (Erk1), and caused ONS-76 cells to display markers of apoptosis. UW228, another medulloblastoma cell-line, was also susceptible to the suppressive effects of resveratrol and Zhangfei. In contrast, while resveratrol suppressed the growth of human diploid fibroblasts (MRC5), Zhangfei had relatively little effect on these cells.
Literatur
1.
Zurück zum Zitat Parada LF, Tsoulfas P, Tessarollo L, Blair J, Reid SW, Soppet D (1992) The Trk family of tyrosine kinases: receptors for NGF-related neurotrophins. Cold Spring Harb Symp Quant Biol 57:43–51PubMed Parada LF, Tsoulfas P, Tessarollo L, Blair J, Reid SW, Soppet D (1992) The Trk family of tyrosine kinases: receptors for NGF-related neurotrophins. Cold Spring Harb Symp Quant Biol 57:43–51PubMed
3.
Zurück zum Zitat Crowley C, Spencer SD, Nishimura MC, Chen KS, Pitts-Meek S, Armanini MP et al (1994) Mice lacking nerve growth factor display perinatal loss of sensory and sympathetic neurons yet develop basal forebrain cholinergic neurons. Cell 76:1001–1011. doi:10.1016/0092-8674(94)90378-6 PubMedCrossRef Crowley C, Spencer SD, Nishimura MC, Chen KS, Pitts-Meek S, Armanini MP et al (1994) Mice lacking nerve growth factor display perinatal loss of sensory and sympathetic neurons yet develop basal forebrain cholinergic neurons. Cell 76:1001–1011. doi:10.​1016/​0092-8674(94)90378-6 PubMedCrossRef
4.
Zurück zum Zitat Martin-Zanca D, Barbacid M, Parada LF (1990) Expression of the trk proto-oncogene is restricted to the sensory cranial and spinal ganglia of neural crest origin in mouse development. Genes Dev 4:683–694. doi:10.1101/gad.4.5.683 PubMedCrossRef Martin-Zanca D, Barbacid M, Parada LF (1990) Expression of the trk proto-oncogene is restricted to the sensory cranial and spinal ganglia of neural crest origin in mouse development. Genes Dev 4:683–694. doi:10.​1101/​gad.​4.​5.​683 PubMedCrossRef
6.
Zurück zum Zitat Verge VM, Merlio JP, Grondin J, Ernfors P, Persson H, Riopelle RJ et al (1992) Colocalization of NGF binding sites, trk mRNA, and low-affinity NGF receptor mRNA in primary sensory neurons: responses to injury and infusion of NGF. J Neurosci 12:4011–4022PubMed Verge VM, Merlio JP, Grondin J, Ernfors P, Persson H, Riopelle RJ et al (1992) Colocalization of NGF binding sites, trk mRNA, and low-affinity NGF receptor mRNA in primary sensory neurons: responses to injury and infusion of NGF. J Neurosci 12:4011–4022PubMed
7.
Zurück zum Zitat Verge VM, Richardson PM, Wiesenfeld-Hallin Z, Hokfelt T (1995) Differential influence of nerve growth factor on neuropeptide expression in vivo: a novel role in peptide suppression in adult sensory neurons. J Neurosci 15:2081–2096PubMed Verge VM, Richardson PM, Wiesenfeld-Hallin Z, Hokfelt T (1995) Differential influence of nerve growth factor on neuropeptide expression in vivo: a novel role in peptide suppression in adult sensory neurons. J Neurosci 15:2081–2096PubMed
8.
Zurück zum Zitat Sasaki K, Chancellor MB, Goins WF, Phelan MW, Glorioso JC, de Groat WC et al (2004) Gene therapy using replication-defective herpes simplex virus vectors expressing nerve growth factor in a rat model of diabetic cystopathy. Diabetes 53:2723–2730. doi:10.2337/diabetes.53.10.2723 PubMedCrossRef Sasaki K, Chancellor MB, Goins WF, Phelan MW, Glorioso JC, de Groat WC et al (2004) Gene therapy using replication-defective herpes simplex virus vectors expressing nerve growth factor in a rat model of diabetic cystopathy. Diabetes 53:2723–2730. doi:10.​2337/​diabetes.​53.​10.​2723 PubMedCrossRef
10.
Zurück zum Zitat Kriesel JD (1999) Reactivation of herpes simplex virus: the role of cytokines and intracellular factors. Curr Opin Infect Dis 12:235–238PubMed Kriesel JD (1999) Reactivation of herpes simplex virus: the role of cytokines and intracellular factors. Curr Opin Infect Dis 12:235–238PubMed
11.
Zurück zum Zitat Hill JM, Garza HHJ, Helmy MF, Cook SD, Osborne PA, Johnson EMJ et al (1997) Nerve growth factor antibody stimulates reactivation of ocular herpes simplex virus type 1 in latently infected rabbits. J Neurovirol 3:206–211PubMedCrossRef Hill JM, Garza HHJ, Helmy MF, Cook SD, Osborne PA, Johnson EMJ et al (1997) Nerve growth factor antibody stimulates reactivation of ocular herpes simplex virus type 1 in latently infected rabbits. J Neurovirol 3:206–211PubMedCrossRef
12.
Zurück zum Zitat Laycock KA, Brady RH, Lee SF, Osborne PA, Johnson EM, Pepose JS (1994) The role of nerve growth factor in modulating herpes simplex virus reactivation in vivo. Graefes Arch Clin Exp Ophthalmol 232:421–425. doi:10.1007/BF00186584 PubMedCrossRef Laycock KA, Brady RH, Lee SF, Osborne PA, Johnson EM, Pepose JS (1994) The role of nerve growth factor in modulating herpes simplex virus reactivation in vivo. Graefes Arch Clin Exp Ophthalmol 232:421–425. doi:10.​1007/​BF00186584 PubMedCrossRef
13.
Zurück zum Zitat Wilcox CL, Smith RL, Freed CR, Johnson EMJ (1990) Nerve growth factor-dependence of herpes simplex virus latency in peripheral sympathetic and sensory neurons in vitro. J Neurosci 10:1268–1275PubMed Wilcox CL, Smith RL, Freed CR, Johnson EMJ (1990) Nerve growth factor-dependence of herpes simplex virus latency in peripheral sympathetic and sensory neurons in vitro. J Neurosci 10:1268–1275PubMed
14.
Zurück zum Zitat Antonelli A, Lenzi L, Nakagawara A, Osaki T, Chiaretti A, Aloe L (2007) Tumor suppressor proteins are differentially affected in human ependymoblastoma and medulloblastoma cells exposed to nerve growth factor. Cancer Invest 25:94–101. doi:10.1080/07357900701205689 PubMedCrossRef Antonelli A, Lenzi L, Nakagawara A, Osaki T, Chiaretti A, Aloe L (2007) Tumor suppressor proteins are differentially affected in human ependymoblastoma and medulloblastoma cells exposed to nerve growth factor. Cancer Invest 25:94–101. doi:10.​1080/​0735790070120568​9 PubMedCrossRef
15.
Zurück zum Zitat Eberhart CG, Kaufman WE, Tihan T, Burger PC (2001) Apoptosis, neuronal maturation, and neurotrophin expression within medulloblastoma nodules. J Neuropathol Exp Neurol 60:462–469PubMed Eberhart CG, Kaufman WE, Tihan T, Burger PC (2001) Apoptosis, neuronal maturation, and neurotrophin expression within medulloblastoma nodules. J Neuropathol Exp Neurol 60:462–469PubMed
17.
Zurück zum Zitat Tajima Y, Molina RP Jr, Rorke LB, Kaplan DR, Radeke M, Feinstein SC et al (1998) Neurotrophins and neuronal versus glial differentiation in medulloblastomas and other pediatric brain tumors. Acta Neuropathol 95:325–332. doi:10.1007/s004010050806 PubMedCrossRef Tajima Y, Molina RP Jr, Rorke LB, Kaplan DR, Radeke M, Feinstein SC et al (1998) Neurotrophins and neuronal versus glial differentiation in medulloblastomas and other pediatric brain tumors. Acta Neuropathol 95:325–332. doi:10.​1007/​s004010050806 PubMedCrossRef
19.
Zurück zum Zitat Eggert A, Ikegaki N, Liu X, Chou TT, Lee VM, Trojanowski JQ et al (2000) Molecular dissection of TrkA signal transduction pathways mediating differentiation in human neuroblastoma cells. Oncogene 19:2043–2051. doi:10.1038/sj.onc.1203518 PubMedCrossRef Eggert A, Ikegaki N, Liu X, Chou TT, Lee VM, Trojanowski JQ et al (2000) Molecular dissection of TrkA signal transduction pathways mediating differentiation in human neuroblastoma cells. Oncogene 19:2043–2051. doi:10.​1038/​sj.​onc.​1203518 PubMedCrossRef
20.
Zurück zum Zitat Muragaki Y, Chou TT, Kaplan DR, Trojanowski JQ, Lee VM (1997) Nerve growth factor induces apoptosis in human medulloblastoma cell lines that express TrkA receptors. J Neurosci 17:530–542PubMed Muragaki Y, Chou TT, Kaplan DR, Trojanowski JQ, Lee VM (1997) Nerve growth factor induces apoptosis in human medulloblastoma cell lines that express TrkA receptors. J Neurosci 17:530–542PubMed
22.
Zurück zum Zitat Roizman B, Knipe DM (2001) Herpes simplex viruses and their replication. In: Knipe DM, Howley PM, Griffin DE, Martin MA, Lamb RA, Roizman B, Straus SE (eds) Fields virology. Lippincott Willaims and Wilkins, Philadelphia, PA, pp 2399–2460 Roizman B, Knipe DM (2001) Herpes simplex viruses and their replication. In: Knipe DM, Howley PM, Griffin DE, Martin MA, Lamb RA, Roizman B, Straus SE (eds) Fields virology. Lippincott Willaims and Wilkins, Philadelphia, PA, pp 2399–2460
23.
Zurück zum Zitat Wilcox C, Johnson E (1987) Nerve growth factor deprivation results in the reactivation of latent herpes simplex virus in vitro. J Virol 61:2311–2315PubMed Wilcox C, Johnson E (1987) Nerve growth factor deprivation results in the reactivation of latent herpes simplex virus in vitro. J Virol 61:2311–2315PubMed
24.
Zurück zum Zitat Wilcox C, Johnson E (1988) Characterization of nerve growth factor-dependent herpes simplex virus latency in neurons in vitro. J Virol 62:393–399PubMed Wilcox C, Johnson E (1988) Characterization of nerve growth factor-dependent herpes simplex virus latency in neurons in vitro. J Virol 62:393–399PubMed
27.
Zurück zum Zitat Ajuh P, Chusainow J, Ryder U, Lamond AI (2002) A novel function for human factor C1 (HCF-1), a host protein required for herpes simplex virus infection, in pre-mRNA splicing. EMBO J 21:6590–6602. doi:10.1093/emboj/cdf652 PubMedCrossRef Ajuh P, Chusainow J, Ryder U, Lamond AI (2002) A novel function for human factor C1 (HCF-1), a host protein required for herpes simplex virus infection, in pre-mRNA splicing. EMBO J 21:6590–6602. doi:10.​1093/​emboj/​cdf652 PubMedCrossRef
28.
Zurück zum Zitat Wysocka J, Myers MP, Laherty CD, Eisenman RN, Herr W (2003) Human Sin3 deacetylase and trithorax-related Set1/Ash2 histone H3-K4 methyltransferase are tethered together selectively by the cell-proliferation factor HCF-1. Genes Dev 17:896–911. doi:10.1101/gad.252103 PubMedCrossRef Wysocka J, Myers MP, Laherty CD, Eisenman RN, Herr W (2003) Human Sin3 deacetylase and trithorax-related Set1/Ash2 histone H3-K4 methyltransferase are tethered together selectively by the cell-proliferation factor HCF-1. Genes Dev 17:896–911. doi:10.​1101/​gad.​252103 PubMedCrossRef
29.
Zurück zum Zitat Narayanan A, Nogueira ML, Ruyechan WT, Kristie TM (2005) Combinatorial transcription of herpes simplex virus and varicella zoster virus immediate early genes is strictly determined by the cellular coactivator HCF-1. J Biol Chem 280:1369–1375. doi:10.1074/jbc.M410178200 PubMedCrossRef Narayanan A, Nogueira ML, Ruyechan WT, Kristie TM (2005) Combinatorial transcription of herpes simplex virus and varicella zoster virus immediate early genes is strictly determined by the cellular coactivator HCF-1. J Biol Chem 280:1369–1375. doi:10.​1074/​jbc.​M410178200 PubMedCrossRef
31.
Zurück zum Zitat Wilson AC, Freiman RN, Goto H, Nishimoto T, Herr W (1997) VP16 targets an amino-terminal domain of HCF involved in cell cycle progression. Mol Cell Biol 17:6139–6146PubMed Wilson AC, Freiman RN, Goto H, Nishimoto T, Herr W (1997) VP16 targets an amino-terminal domain of HCF involved in cell cycle progression. Mol Cell Biol 17:6139–6146PubMed
32.
Zurück zum Zitat Narayanan A, Ruyechan WT, Kristie TM (2007) The coactivator host cell factor-1 mediates Set1 and MLL1 H3K4 trimethylation at herpesvirus immediate early promoters for initiation of infection. Proc Natl Acad Sci USA 104:10835–10840. doi:10.1073/pnas.0704351104 PubMedCrossRef Narayanan A, Ruyechan WT, Kristie TM (2007) The coactivator host cell factor-1 mediates Set1 and MLL1 H3K4 trimethylation at herpesvirus immediate early promoters for initiation of infection. Proc Natl Acad Sci USA 104:10835–10840. doi:10.​1073/​pnas.​0704351104 PubMedCrossRef
37.
Zurück zum Zitat Lu R, Yang P, O’Hare P, Misra V (1997) Luman, a new member of the CREB/ATF family, binds to herpes simplex virus VP16-associated host cellular factor. Mol Cell Biol 17:5117–5126PubMed Lu R, Yang P, O’Hare P, Misra V (1997) Luman, a new member of the CREB/ATF family, binds to herpes simplex virus VP16-associated host cellular factor. Mol Cell Biol 17:5117–5126PubMed
38.
Zurück zum Zitat Lu R, Yang P, Padmakumar S, Misra V (1998) The herpesvirus transactivator VP16 mimics a human basic domain leucine zipper protein, Luman, in its interaction with HCF. J Virol 72:6291–6297PubMed Lu R, Yang P, Padmakumar S, Misra V (1998) The herpesvirus transactivator VP16 mimics a human basic domain leucine zipper protein, Luman, in its interaction with HCF. J Virol 72:6291–6297PubMed
41.
Zurück zum Zitat Misra V, Rapin N, Akhova O, Bainbridge M, Korchinski P (2005) Zhangfei is a potent and specific inhibitor of the host cell factor-binding transcription factor Luman. J Biol Chem 280:15257–15266. doi:10.1074/jbc.M500728200 PubMedCrossRef Misra V, Rapin N, Akhova O, Bainbridge M, Korchinski P (2005) Zhangfei is a potent and specific inhibitor of the host cell factor-binding transcription factor Luman. J Biol Chem 280:15257–15266. doi:10.​1074/​jbc.​M500728200 PubMedCrossRef
44.
Zurück zum Zitat Yamada M, Shimizu K, Tamura K, Okamoto Y, Matsui Y, Moriuchi S et al (1989) Establishment and biological characterization of human medulloblastoma cell lines. No To Shinkei 41:695–702 Yamada M, Shimizu K, Tamura K, Okamoto Y, Matsui Y, Moriuchi S et al (1989) Establishment and biological characterization of human medulloblastoma cell lines. No To Shinkei 41:695–702
45.
Zurück zum Zitat Keles GE, Berger MS, Srinivasan J, Kolstoe DD, Bobola MS, Silber JR (1995) Establishment and characterization of four human medulloblastoma-derived cell lines. Oncol Res 7:493–503PubMed Keles GE, Berger MS, Srinivasan J, Kolstoe DD, Bobola MS, Silber JR (1995) Establishment and characterization of four human medulloblastoma-derived cell lines. Oncol Res 7:493–503PubMed
48.
Zurück zum Zitat Nicolini G, Rigolio R, Scuteri A, Miloso M, Saccomanno D, Cavaletti G et al (2003) Effect of trans-resveratrol on signal transduction pathways involved in paclitaxel-induced apoptosis in human neuroblastoma SH-SY5Y cells. Neurochem Int 42:419–429. doi:10.1016/S0197-0186(02)00132-8 PubMedCrossRef Nicolini G, Rigolio R, Scuteri A, Miloso M, Saccomanno D, Cavaletti G et al (2003) Effect of trans-resveratrol on signal transduction pathways involved in paclitaxel-induced apoptosis in human neuroblastoma SH-SY5Y cells. Neurochem Int 42:419–429. doi:10.​1016/​S0197-0186(02)00132-8 PubMedCrossRef
49.
Zurück zum Zitat Tredici G, Miloso M, Nicolini G, Galbiati S, Cavaletti G, Bertelli A (1999) Resveratrol, map kinases and neuronal cells: might wine be a neuroprotectant? Drugs Exp Clin Res 25:99–103PubMed Tredici G, Miloso M, Nicolini G, Galbiati S, Cavaletti G, Bertelli A (1999) Resveratrol, map kinases and neuronal cells: might wine be a neuroprotectant? Drugs Exp Clin Res 25:99–103PubMed
51.
Zurück zum Zitat Zhang P, Li H, Wu ML, Chen XY, Kong QY, Wang XW et al (2006) c-Myc downregulation: a critical molecular event in resveratrol-induced cell cycle arrest and apoptosis of human medulloblastoma cells. J Neurooncol 80:123–131. doi:10.1007/s11060-006-9172-7 PubMedCrossRef Zhang P, Li H, Wu ML, Chen XY, Kong QY, Wang XW et al (2006) c-Myc downregulation: a critical molecular event in resveratrol-induced cell cycle arrest and apoptosis of human medulloblastoma cells. J Neurooncol 80:123–131. doi:10.​1007/​s11060-006-9172-7 PubMedCrossRef
52.
Zurück zum Zitat Park KC, Shimizu K, Hayakawa T (1998) Interferon yield and MHC antigen expression of human medulloblastoma cells and its suppression during dibutyryl cyclic AMP-induced differentiation: do medulloblastoma cells derive from bipotent neuronal and glial progenitors? Cell Mol Neurobiol 18:497–507. doi:10.1023/A:1026327309345 PubMedCrossRef Park KC, Shimizu K, Hayakawa T (1998) Interferon yield and MHC antigen expression of human medulloblastoma cells and its suppression during dibutyryl cyclic AMP-induced differentiation: do medulloblastoma cells derive from bipotent neuronal and glial progenitors? Cell Mol Neurobiol 18:497–507. doi:10.​1023/​A:​1026327309345 PubMedCrossRef
53.
57.
Zurück zum Zitat Fogarty MP, Emmenegger BA, Grasfeder LL, Oliver TG, Wechsler-Reya RJ (2007) Fibroblast growth factor blocks Sonic hedgehog signaling in neuronal precursors and tumor cells. Proc Natl Acad Sci USA 104:2973–2978. doi:10.1073/pnas.0605770104 PubMedCrossRef Fogarty MP, Emmenegger BA, Grasfeder LL, Oliver TG, Wechsler-Reya RJ (2007) Fibroblast growth factor blocks Sonic hedgehog signaling in neuronal precursors and tumor cells. Proc Natl Acad Sci USA 104:2973–2978. doi:10.​1073/​pnas.​0605770104 PubMedCrossRef
58.
59.
Zurück zum Zitat Keles GE, Berger MS, Schofield D, Bothwell M (1993) Nerve growth factor receptor expression in medulloblastomas and the potential role of nerve growth factor as a differentiating agent in medulloblastoma cell lines. Neurosurgery 32:274–280 (discussion 280)PubMedCrossRef Keles GE, Berger MS, Schofield D, Bothwell M (1993) Nerve growth factor receptor expression in medulloblastomas and the potential role of nerve growth factor as a differentiating agent in medulloblastoma cell lines. Neurosurgery 32:274–280 (discussion 280)PubMedCrossRef
60.
62.
Zurück zum Zitat Lefort S, Soucy-Faulkner A, Grandvaux N, Flamand L (2007) Binding of Kaposi’s sarcoma-associated herpesvirus K-bZIP to interferon responsive factor 3 elements modulates antiviral genes expression. J Virol 81:10950–10960. doi:10.1128/JVI.00183-07 PubMedCrossRef Lefort S, Soucy-Faulkner A, Grandvaux N, Flamand L (2007) Binding of Kaposi’s sarcoma-associated herpesvirus K-bZIP to interferon responsive factor 3 elements modulates antiviral genes expression. J Virol 81:10950–10960. doi:10.​1128/​JVI.​00183-07 PubMedCrossRef
63.
Zurück zum Zitat Wu FY, Wang SE, Tang QQ, Fujimuro M, Chiou CJ, Zheng Q et al (2003) Cell cycle arrest by Kaposi’s sarcoma-associated herpesvirus replication-associated protein is mediated at both the transcriptional and posttranslational levels by binding to CCAAT/enhancer-binding protein alpha and p21(CIP-1). J Virol 77:8893–8914. doi:10.1128/JVI.77.16.8893-8914.2003 PubMedCrossRef Wu FY, Wang SE, Tang QQ, Fujimuro M, Chiou CJ, Zheng Q et al (2003) Cell cycle arrest by Kaposi’s sarcoma-associated herpesvirus replication-associated protein is mediated at both the transcriptional and posttranslational levels by binding to CCAAT/enhancer-binding protein alpha and p21(CIP-1). J Virol 77:8893–8914. doi:10.​1128/​JVI.​77.​16.​8893-8914.​2003 PubMedCrossRef
64.
65.
Zurück zum Zitat Serra JM, Gutierrez A, Alemany R, Navarro M, Ros T, Saus C et al (2008) Inhibition of c-Myc down-regulation by sustained ERK activation prevents the antimetabolite methotrexate- and gemcitabine-induced differentiation in non-small cell lung cancer cells. Mol Pharmacol 73:1679–1687. doi:10.1124/mol.107.043372 CrossRef Serra JM, Gutierrez A, Alemany R, Navarro M, Ros T, Saus C et al (2008) Inhibition of c-Myc down-regulation by sustained ERK activation prevents the antimetabolite methotrexate- and gemcitabine-induced differentiation in non-small cell lung cancer cells. Mol Pharmacol 73:1679–1687. doi:10.​1124/​mol.​107.​043372 CrossRef
Metadaten
Titel
Zhangfei induces the expression of the nerve growth factor receptor, trkA, in medulloblastoma cells and causes their differentiation or apoptosis
verfasst von
Ximena Valderrama
Noreen Rapin
Valerie M. K. Verge
Vikram Misra
Publikationsdatum
01.01.2009
Verlag
Springer US
Erschienen in
Journal of Neuro-Oncology / Ausgabe 1/2009
Print ISSN: 0167-594X
Elektronische ISSN: 1573-7373
DOI
https://doi.org/10.1007/s11060-008-9682-6

Weitere Artikel der Ausgabe 1/2009

Journal of Neuro-Oncology 1/2009 Zur Ausgabe

Leitlinien kompakt für die Neurologie

Mit medbee Pocketcards sicher entscheiden.

Seit 2022 gehört die medbee GmbH zum Springer Medizin Verlag

Akuter Schwindel: Wann lohnt sich eine MRT?

28.04.2024 Schwindel Nachrichten

Akuter Schwindel stellt oft eine diagnostische Herausforderung dar. Wie nützlich dabei eine MRT ist, hat eine Studie aus Finnland untersucht. Immerhin einer von sechs Patienten wurde mit akutem ischämischem Schlaganfall diagnostiziert.

Niedriger diastolischer Blutdruck erhöht Risiko für schwere kardiovaskuläre Komplikationen

25.04.2024 Hypotonie Nachrichten

Wenn unter einer medikamentösen Hochdrucktherapie der diastolische Blutdruck in den Keller geht, steigt das Risiko für schwere kardiovaskuläre Ereignisse: Darauf deutet eine Sekundäranalyse der SPRINT-Studie hin.

Frühe Alzheimertherapie lohnt sich

25.04.2024 AAN-Jahrestagung 2024 Nachrichten

Ist die Tau-Last noch gering, scheint der Vorteil von Lecanemab besonders groß zu sein. Und beginnen Erkrankte verzögert mit der Behandlung, erreichen sie nicht mehr die kognitive Leistung wie bei einem früheren Start. Darauf deuten neue Analysen der Phase-3-Studie Clarity AD.

Viel Bewegung in der Parkinsonforschung

25.04.2024 Parkinson-Krankheit Nachrichten

Neue arznei- und zellbasierte Ansätze, Frühdiagnose mit Bewegungssensoren, Rückenmarkstimulation gegen Gehblockaden – in der Parkinsonforschung tut sich einiges. Auf dem Deutschen Parkinsonkongress ging es auch viel um technische Innovationen.

Update Neurologie

Bestellen Sie unseren Fach-Newsletter und bleiben Sie gut informiert.