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Balázsfi M, Szappanos N, Lehelvári G, Kis D, Barzó P. [Our experience with minimally invasive decompression spine surgeries performed with microscopic and endoscopic visualization]. Orv Hetil 2023; 164:1926-1937. [PMID: 38071645 DOI: 10.1556/650.2023.32926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 09/26/2023] [Indexed: 12/18/2023]
Abstract
Bevezetés: A minimálisan invazív technikák ugrásszerű fejlődése
nem hagyta érintetlenül az idegsebészetet sem. Az új műtéti beavatkozások mind a
koponya-, mind a gerincsebészet vonatkozásában egyre szélesebb teret nyernek. Ez
utóbbi területen létjogosultságukat tovább fokozza az idősödő társadalom igénye,
mely szinte átrajzolva a műtéti statisztikát, korábban alig vagy kevés számban
végzett beavatkozások egyre növekvő számához vezetett. A degeneratív
elváltozások okozta gerinccsatorna-szűkületek ellátása során kezdetben
alkalmazott, kétoldali feltárással járó laminectomiát felváltotta az egy
oldalról elvégezhető „over-the-top” műtét, majd az utóbbi években, a feltárás
további minimalizálóját segítő, a lehető legkisebb járulékos szövetroncsolást
biztosító technikák, mint a tubusfeltáró, majd a gerincendoszkóp használata.
Célkitűzés: A jelen tanulmány célja, hogy az elmúlt évek
tapasztalatait felhasználva bemutassa a két, minimálisan invazív technikával,
azaz a tubusfeltáróval és az endoszkóppal végzett dekompressziós műtéteket, ezek
eredményeit, mintegy rálátást adva a nemzetközi gerincsebészeti trendekre.
Módszer: 2022. január 1. és 2022. december 31. között 43
beteget operáltunk ezen technikával gerinccsatorna-szűkület miatt. Ezek közül 27
esetben tubusfeltárót és mikroszkópot, míg 16 esetben endoszkópos technikát
alkalmaztunk. Az eredmények megítélésére a beavatkozás előtt és után vizuális
analóg skála értéket vettünk fel neurogen claudicatio, terhelésre fokozódó
derékfájdalom és a nyugalmi gyöki fájdalmak megítélésére. Ennek alapján a
betegeket négy csoportba osztottuk: „változatlan” (0–30%), „mérsékelt” (31–50%),
„jó” (51–75%) és „kiváló” (76–100%) minősítést alkalmazva. Külön elemeztük a
spondylolisthesissel kombinált szűkület miatt történt műtéteket. Rövid távú
eredményeinket a hospitalizációs napok átlagos értéke alapján értékeltük.
Eredmények: Mindhárom vizsgált tünet esetében „kiváló”
posztoperatív eredményt értünk el, azaz a neurogen claudicatio 95,3%-ban, a
derékfájdalom 72,4%-ban, míg a nyugalmi gyöki tünetek 86,9%-ban csaknem teljesen
megszűntek. „Jó” és „mérsékelt” eredményt ennek megfelelően jóval kisebb
arányokban tapasztaltunk. A spondylolisthesis talaján kialakult
gerinccsatorna-szűkület dekompressziós műtéte utáni eredményeket külön
értékeltük, melyek alapján szintén az esetek 92,8%-ában a neurogen caludicatio,
70%-ában a derékfájdalom és 100%-ában a nyugalmi fájdalom posztoperatív
eredménye bizonyult „kiválónak”. A kórházban töltött napok száma átlagosan 3,7
volt. Megbeszélés és következtetés: Tapasztalataink egybevágnak
azokkal a nemzetközi eredményekkel, amelyek szerint a tubusfeltáró és az
endoszkóp alkalmazásával a minimálisan invazív technikák eredményei tovább
javíthatók mind rövid, mind hosszú távon. Az új technikák bevezetésével nemcsak
jobb eredménnyel járó, kevésbé invazív megközelítést kínálhatunk a betegeknek,
de az eljárások hatékony volta miatt több beteg kerülhet műtétre, jelentősen
lerövidítve a várakozási időt. Orv Hetil. 2023; 164(49): 1926–1937.
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Affiliation(s)
- Márton Balázsfi
- 1 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Idegsebészeti Klinika Szeged, Semmelweis u. 6., 6725 Magyarország
| | - Norbert Szappanos
- 1 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Idegsebészeti Klinika Szeged, Semmelweis u. 6., 6725 Magyarország
| | - Gergely Lehelvári
- 1 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Idegsebészeti Klinika Szeged, Semmelweis u. 6., 6725 Magyarország
| | - Dávid Kis
- 1 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Idegsebészeti Klinika Szeged, Semmelweis u. 6., 6725 Magyarország
| | - Pál Barzó
- 1 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Idegsebészeti Klinika Szeged, Semmelweis u. 6., 6725 Magyarország
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Németh T, Márkos-Gergely G, Varga Á, Hausinger P, Majoros V, Barzó P. [The benefits of a hybrid operation room in neurosurgery.]. Orv Hetil 2023; 164:1701-1711. [PMID: 37898920 DOI: 10.1556/650.2023.32876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 07/15/2023] [Indexed: 10/31/2023]
Abstract
INTRODUCTION The hybrid operation room - with a robotic arm equipped angiographic device - started its operation in November 2019 at the Department of Neurosurgery, Szeged, Hungary. OBJECTIVE We report the benefits of the hybrid operation room in the neurosurgery practice based on our results and experiences of the last 1.5 years. METHOD 576 operations took place between 15. 11. 2019 and 01. 03. 2021, which include 332 neurointerventions amd 244 skull-brain and spine surgeries. By using Siemens ARTIS pheno®, we performed purely catheter only interventions or surgical only interventions, but combined treatments were also performed in several cases (catheter and surgical intervention). Thanks to ARTIS pheno® versatility, it is used as a modern imaging system in preoperative examination or as navigation system in spine surgery and control imaging for intra- and postoperative examinations. DISCUSSION We created three categories based on the results of the last months according to the need of using the hybrid operation room for the given operation: (1) strongly recommended, (2) recommended, (3) advantageous. Strongly recommended: if the two teams (surgical and interventional team) have to work together during the operation. Recommended: if the two teams are not participating together in the operation, but the other team is on standby and may join the operation if necessary. Advantageous: this category means the possibility of performing control imaging before the wound closure. CONCLUSION Based on our experience, the hybrid operation room provides significant help in neurosurgery. It has become part of our daily care, and we think it is indispensable in the work of a neurosurgery center. Orv Hetil. 2023; 164(43): 1701-1711.
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Affiliation(s)
- Tamás Németh
- 1 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Idegsebészeti Klinika Szeged, Semmelweis u. 6., 6725 Magyarország
| | - Gellérd Márkos-Gergely
- 1 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Idegsebészeti Klinika Szeged, Semmelweis u. 6., 6725 Magyarország
| | - Ádám Varga
- 1 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Idegsebészeti Klinika Szeged, Semmelweis u. 6., 6725 Magyarország
| | - Péter Hausinger
- 1 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Idegsebészeti Klinika Szeged, Semmelweis u. 6., 6725 Magyarország
- 2 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Belgyógyászati Klinika - Invazív Kardiológia Szeged Magyarország
| | - Valéria Majoros
- 3 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Aneszteziológiai és Intenzív Terápiás Intézet Szeged Magyarország
| | - Pál Barzó
- 1 Szegedi Tudományegyetem, Szent-Györgyi Albert Orvostudományi Kar, Idegsebészeti Klinika Szeged, Semmelweis u. 6., 6725 Magyarország
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3
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Rózsa M, Tóth M, Oláh G, Baka J, Lákovics R, Barzó P, Tamás G. Temporal disparity of action potentials triggered in axon initial segments and distal axons in the neocortex. Sci Adv 2023; 9:eade4511. [PMID: 37824608 PMCID: PMC10569705 DOI: 10.1126/sciadv.ade4511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 04/11/2023] [Indexed: 10/14/2023]
Abstract
Neural population activity determines the timing of synaptic inputs, which arrive to dendrites, cell bodies, and axon initial segments (AISs) of cortical neurons. Action potential initiation in the AIS (AIS-APs) is driven by input integration, and the phase preference of AIS-APs during network oscillations is characteristic to cell classes. Distal regions of cortical axons do not receive synaptic inputs, yet experimental induction protocols can trigger retroaxonal action potentials (RA-APs) in axons distal from the soma. We report spontaneously occurring RA-APs in human and rodent cortical interneurons that appear uncorrelated to inputs and population activity. Network-linked triggering of AIS-APs versus input-independent timing of RA-APs of the same interneurons results in disparate temporal contribution of a single cell to in vivo network operation through perisomatic and distal axonal firing.
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Affiliation(s)
- Márton Rózsa
- ELKH-SZTE Research Group for Cortical Microcircuits, University of Szeged, Szeged, Hungary
| | - Martin Tóth
- ELKH-SZTE Research Group for Cortical Microcircuits, University of Szeged, Szeged, Hungary
| | - Gáspár Oláh
- ELKH-SZTE Research Group for Cortical Microcircuits, University of Szeged, Szeged, Hungary
| | - Judith Baka
- ELKH-SZTE Research Group for Cortical Microcircuits, University of Szeged, Szeged, Hungary
| | - Rajmund Lákovics
- ELKH-SZTE Research Group for Cortical Microcircuits, University of Szeged, Szeged, Hungary
| | - Pál Barzó
- Department of Neurosurgery, University of Szeged, Szeged, Hungary
| | - Gábor Tamás
- ELKH-SZTE Research Group for Cortical Microcircuits, University of Szeged, Szeged, Hungary
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4
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Lee BR, Dalley R, Miller JA, Chartrand T, Close J, Mann R, Mukora A, Ng L, Alfiler L, Baker K, Bertagnolli D, Brouner K, Casper T, Csajbok E, Donadio N, Driessens SLW, Egdorf T, Enstrom R, Galakhova AA, Gary A, Gelfand E, Goldy J, Hadley K, Heistek TS, Hill D, Hou WH, Johansen N, Jorstad N, Kim L, Kocsis AK, Kruse L, Kunst M, León G, Long B, Mallory M, Maxwell M, McGraw M, McMillen D, Melief EJ, Molnar G, Mortrud MT, Newman D, Nyhus J, Opitz-Araya X, Ozsvár A, Pham T, Pom A, Potekhina L, Rajanbabu R, Ruiz A, Sunkin SM, Szöts I, Taskin N, Thyagarajan B, Tieu M, Trinh J, Vargas S, Vumbaco D, Waleboer F, Walling-Bell S, Weed N, Williams G, Wilson J, Yao S, Zhou T, Barzó P, Bakken T, Cobbs C, Dee N, Ellenbogen RG, Esposito L, Ferreira M, Gouwens NW, Grannan B, Gwinn RP, Hauptman JS, Hodge R, Jarsky T, Keene CD, Ko AL, Korshoej AR, Levi BP, Meier K, Ojemann JG, Patel A, Ruzevick J, Silbergeld DL, Smith K, Sørensen JC, Waters J, Zeng H, Berg J, Capogna M, Goriounova NA, Kalmbach B, de Kock CPJ, Mansvelder HD, Sorensen SA, Tamas G, Lein ES, Ting JT. Signature morphoelectric properties of diverse GABAergic interneurons in the human neocortex. Science 2023; 382:eadf6484. [PMID: 37824669 DOI: 10.1126/science.adf6484] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 09/08/2023] [Indexed: 10/14/2023]
Abstract
Human cortex transcriptomic studies have revealed a hierarchical organization of γ-aminobutyric acid-producing (GABAergic) neurons from subclasses to a high diversity of more granular types. Rapid GABAergic neuron viral genetic labeling plus Patch-seq (patch-clamp electrophysiology plus single-cell RNA sequencing) sampling in human brain slices was used to reliably target and analyze GABAergic neuron subclasses and individual transcriptomic types. This characterization elucidated transitions between PVALB and SST subclasses, revealed morphological heterogeneity within an abundant transcriptomic type, identified multiple spatially distinct types of the primate-specialized double bouquet cells (DBCs), and shed light on cellular differences between homologous mouse and human neocortical GABAergic neuron types. These results highlight the importance of multimodal phenotypic characterization for refinement of emerging transcriptomic cell type taxonomies and for understanding conserved and specialized cellular properties of human brain cell types.
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Affiliation(s)
- Brian R Lee
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Rachel Dalley
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | | | - Thomas Chartrand
- Allen Institute for Brain Science, Seattle, WA 98109, USA
- Allen Institute for Neural Dynamics, Seattle, WA 98109, USA
| | - Jennie Close
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Rusty Mann
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Alice Mukora
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Lindsay Ng
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Lauren Alfiler
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | | | | | - Krissy Brouner
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Tamara Casper
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Eva Csajbok
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy, and Neuroscience, University of Szeged, 6726 Szeged, Hungary
| | | | - Stan L W Driessens
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research (CNCR), Vrije Universiteit, Amsterdam, 1081 HV, Netherlands
| | - Tom Egdorf
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Rachel Enstrom
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Anna A Galakhova
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research (CNCR), Vrije Universiteit, Amsterdam, 1081 HV, Netherlands
| | - Amanda Gary
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Emily Gelfand
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Jeff Goldy
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Kristen Hadley
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Tim S Heistek
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research (CNCR), Vrije Universiteit, Amsterdam, 1081 HV, Netherlands
| | - Dijon Hill
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Wen-Hsien Hou
- Department of Biomedicine, Aarhus University, 8000 Aarhus, Denmark
| | | | - Nik Jorstad
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Lisa Kim
- Allen Institute for Brain Science, Seattle, WA 98109, USA
- Allen Institute for Neural Dynamics, Seattle, WA 98109, USA
| | - Agnes Katalin Kocsis
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy, and Neuroscience, University of Szeged, 6726 Szeged, Hungary
| | - Lauren Kruse
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Michael Kunst
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Gabriela León
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Brian Long
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | | | | | - Medea McGraw
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | | | - Erica J Melief
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98195, USA
| | - Gabor Molnar
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy, and Neuroscience, University of Szeged, 6726 Szeged, Hungary
| | | | - Dakota Newman
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Julie Nyhus
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | | | - Attila Ozsvár
- Department of Biomedicine, Aarhus University, 8000 Aarhus, Denmark
| | | | - Alice Pom
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | | | - Ram Rajanbabu
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Augustin Ruiz
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Susan M Sunkin
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Ildikó Szöts
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy, and Neuroscience, University of Szeged, 6726 Szeged, Hungary
| | - Naz Taskin
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | | | - Michael Tieu
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Jessica Trinh
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Sara Vargas
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - David Vumbaco
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Femke Waleboer
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research (CNCR), Vrije Universiteit, Amsterdam, 1081 HV, Netherlands
| | | | - Natalie Weed
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Grace Williams
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Julia Wilson
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Shenqin Yao
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Thomas Zhou
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Pál Barzó
- Department of Neurosurgery, University of Szeged, 6725 Szeged, Hungary
| | - Trygve Bakken
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Charles Cobbs
- Swedish Neuroscience Institute, Seattle, WA 98122, USA
| | - Nick Dee
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Richard G Ellenbogen
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, USA
| | - Luke Esposito
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Manuel Ferreira
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, USA
| | | | - Benjamin Grannan
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, USA
| | - Ryder P Gwinn
- Swedish Neuroscience Institute, Seattle, WA 98122, USA
| | - Jason S Hauptman
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, USA
| | - Rebecca Hodge
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Tim Jarsky
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - C Dirk Keene
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98195, USA
| | - Andrew L Ko
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, USA
| | | | - Boaz P Levi
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Kaare Meier
- Department of Neurosurgery, Aarhus University Hospital, 8200 Aarhus, Denmark
- Department of Anesthesiology, Aarhus University Hospital, 8200 Aarhus, Denmark
| | - Jeffrey G Ojemann
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, USA
| | - Anoop Patel
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, USA
| | - Jacob Ruzevick
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, USA
| | - Daniel L Silbergeld
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, USA
| | - Kimberly Smith
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Jens Christian Sørensen
- Department of Neurosurgery, Aarhus University Hospital, 8200 Aarhus, Denmark
- Center for Experimental Neuroscience, Aarhus University Hospital, 8200 Aarhus, Denmark
| | - Jack Waters
- Allen Institute for Brain Science, Seattle, WA 98109, USA
- Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA
| | - Hongkui Zeng
- Allen Institute for Brain Science, Seattle, WA 98109, USA
| | - Jim Berg
- Allen Institute for Brain Science, Seattle, WA 98109, USA
- Allen Institute for Neural Dynamics, Seattle, WA 98109, USA
| | - Marco Capogna
- Department of Biomedicine, Aarhus University, 8000 Aarhus, Denmark
| | - Natalia A Goriounova
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research (CNCR), Vrije Universiteit, Amsterdam, 1081 HV, Netherlands
| | - Brian Kalmbach
- Allen Institute for Brain Science, Seattle, WA 98109, USA
- Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA
| | - Christiaan P J de Kock
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research (CNCR), Vrije Universiteit, Amsterdam, 1081 HV, Netherlands
| | - Huib D Mansvelder
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research (CNCR), Vrije Universiteit, Amsterdam, 1081 HV, Netherlands
| | | | - Gabor Tamas
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy, and Neuroscience, University of Szeged, 6726 Szeged, Hungary
| | - Ed S Lein
- Allen Institute for Brain Science, Seattle, WA 98109, USA
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, USA
| | - Jonathan T Ting
- Allen Institute for Brain Science, Seattle, WA 98109, USA
- Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA
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5
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Tóth T, Mencser Z, Veres R, Barzó P. [Techniques and indications of neurosurgical treatment of oligometastatic renal cell carcinomas in case of spinal metastases]. Magy Onkol 2023; 67:38-42. [PMID: 37086456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 03/29/2023] [Indexed: 04/24/2023]
Abstract
The treatment of spinal metastases is a huge challenge, but both oncological and surgical treatment have improved significantly. Spine surgeons use the experience of spine surgeries performed for an increased number of degenerative causes during spine surgeries performed for an increased number of tumors. Establishing an indication for surgery is at least as much of a challenge as the surgery itself, for which there are many objective point systems available. Renal cell carcinoma metastases are less sensitive to radiation, which is why careful surgery is even more important. In our short summary, we review the symptoms, the examination, the grading systems used and the surgical options.
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Affiliation(s)
- Tamás Tóth
- Idegsebészeti Klinika, Szegedi Tudományegyetem, Szeged, Hungary.
| | - Zoltán Mencser
- Idegsebészeti Klinika, Szegedi Tudományegyetem, Szeged, Hungary.
| | - Róbert Veres
- Idegsebészeti Klinika, Szegedi Tudományegyetem, Szeged, Hungary.
| | - Pál Barzó
- Idegsebészeti Klinika, Szegedi Tudományegyetem, Szeged, Hungary.
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6
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Mencser Z, Tóth T, Kis D, Varga Á, Tiszlavicz L, Barzó P. [Neurosurgical management for metastatic brain tumors in renal cell carcinoma]. Magy Onkol 2023; 67:32-37. [PMID: 37086455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 02/14/2023] [Indexed: 04/24/2023]
Abstract
The therapeutic approach to brain metastases has changed significantly in the last 30 years. The development of surgical technique, the use of new MRI techniques, preoperative surgical planning and the administration of intraoperative navigation reduced the risks of surgery and improved the results. In the case of aggressive renal cell carcinomas, we detect brain metastases relatively often, which are difficult to treat, but the improved surgical and radiosurgery techniques can also be used with success. In our report, we present the neurosurgical management of metastatic spreading of renal cell carcinoma to the brain. Modern surgical planning and more precise, tailored approach with modern radiosurgery techniques are able to improve the outcome and prolong survival even in aggressive types of renal cell carcinomas that give rise to brain metastases. In more severe cases and even in the case of multiple brain metastases, cranial surgery can be recommended.
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Affiliation(s)
- Zoltán Mencser
- Idegsebészeti Klinika, Szegedi Tudományegyetem, Szeged, Hungary.
| | - Tamás Tóth
- Idegsebészeti Klinika, Szegedi Tudományegyetem, Szeged, Hungary.
| | - Dávid Kis
- Idegsebészeti Klinika, Szegedi Tudományegyetem, Szeged, Hungary.
| | - Ádám Varga
- Idegsebészeti Klinika, Szegedi Tudományegyetem, Szeged, Hungary.
| | | | - Pál Barzó
- Idegsebészeti Klinika, Szegedi Tudományegyetem, Szeged, Hungary.
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Szegedi V, Bakos E, Furdan S, Kovács BH, Varga D, Erdélyi M, Barzó P, Szücs A, Tamás G, Lamsa K. HCN channels at the cell soma ensure the rapid electrical reactivity of fast-spiking interneurons in human neocortex. PLoS Biol 2023; 21:e3002001. [PMID: 36745683 PMCID: PMC9934405 DOI: 10.1371/journal.pbio.3002001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 02/16/2023] [Accepted: 01/17/2023] [Indexed: 02/07/2023] Open
Abstract
Accumulating evidence indicates that there are substantial species differences in the properties of mammalian neurons, yet theories on circuit activity and information processing in the human brain are based heavily on results obtained from rodents and other experimental animals. This knowledge gap may be particularly important for understanding the neocortex, the brain area responsible for the most complex neuronal operations and showing the greatest evolutionary divergence. Here, we examined differences in the electrophysiological properties of human and mouse fast-spiking GABAergic basket cells, among the most abundant inhibitory interneurons in cortex. Analyses of membrane potential responses to current input, pharmacologically isolated somatic leak currents, isolated soma outside-out patch recordings, and immunohistochemical staining revealed that human neocortical basket cells abundantly express hyperpolarization-activated cyclic nucleotide-gated cation (HCN) channel isoforms HCN1 and HCN2 at the cell soma membrane, whereas these channels are sparse at the rodent basket cell soma membrane. Antagonist experiments showed that HCN channels in human neurons contribute to the resting membrane potential and cell excitability at the cell soma, accelerate somatic membrane potential kinetics, and shorten the lag between excitatory postsynaptic potentials and action potential generation. These effects are important because the soma of human fast-spiking neurons without HCN channels exhibit low persistent ion leak and slow membrane potential kinetics, compared with mouse fast-spiking neurons. HCN channels speed up human cell membrane potential kinetics and help attain an input-output rate close to that of rodent cells. Computational modeling demonstrated that HCN channel activity at the human fast-spiking cell soma membrane is sufficient to accelerate the input-output function as observed in cell recordings. Thus, human and mouse fast-spiking neurons exhibit functionally significant differences in ion channel composition at the cell soma membrane to set the speed and fidelity of their input-output function. These HCN channels ensure fast electrical reactivity of fast-spiking cells in human neocortex.
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Affiliation(s)
- Viktor Szegedi
- Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
- Hungarian Centre of Excellence for Molecular Medicine Research Group for Human neuron physiology and therapy, Szeged, Hungary
| | - Emőke Bakos
- Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
- Hungarian Centre of Excellence for Molecular Medicine Research Group for Human neuron physiology and therapy, Szeged, Hungary
| | - Szabina Furdan
- Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
- Hungarian Centre of Excellence for Molecular Medicine Research Group for Human neuron physiology and therapy, Szeged, Hungary
| | - Bálint H. Kovács
- Department of Optics and Quantum Electronics, University of Szeged, Szeged, Hungary
| | - Dániel Varga
- Department of Optics and Quantum Electronics, University of Szeged, Szeged, Hungary
| | - Miklós Erdélyi
- Department of Optics and Quantum Electronics, University of Szeged, Szeged, Hungary
| | - Pál Barzó
- Department of Neurosurgery, University of Szeged, Szeged, Hungary
| | - Attila Szücs
- Hungarian Centre of Excellence for Molecular Medicine Research Group for Human neuron physiology and therapy, Szeged, Hungary
- Neuronal Cell Biology Research Group, Eötvös Loránd University, Budapest, Budapest, Hungary
| | - Gábor Tamás
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Karri Lamsa
- Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
- Hungarian Centre of Excellence for Molecular Medicine Research Group for Human neuron physiology and therapy, Szeged, Hungary
- * E-mail: ,
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8
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Nemes P, Reisz Z, Tiszlavicz L, Barzó P. Metastatic renal cell carcinoma in an olfactory meningioma. Interdisciplinary Neurosurgery 2022. [DOI: 10.1016/j.inat.2022.101655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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van Essen TA, Lingsma HF, Pisică D, Singh RD, Volovici V, den Boogert HF, Younsi A, Peppel LD, Heijenbrok-Kal MH, Ribbers GM, Walchenbach R, Menon DK, Hutchinson P, Depreitere B, Steyerberg EW, Maas AIR, de Ruiter GCW, Peul WC, Åkerlund C, Amrein K, Andelic N, Andreassen L, Anke A, Antoni A, Audibert G, Azouvi P, Azzolini ML, Bartels R, Barzó P, Beauvais R, Beer R, Bellander BM, Belli A, Benali H, Berardino M, Beretta L, Blaabjerg M, Bragge P, Brazinova A, Brinck V, Brooker J, Brorsson C, Buki A, Bullinger M, Cabeleira M, Caccioppola A, Calappi E, Calvi MR, Cameron P, Carbayo Lozano G, Carbonara M, Castaño-León AM, Cavallo S, Chevallard G, Chieregato A, Citerio G, Clusmann H, Coburn MS, Coles J, Cooper JD, Correia M, Čović A, Curry N, Czeiter E, Czosnyka M, Dahyot-Fizelier C, Dark P, Dawes H, De Keyser V, Degos V, Della Corte F, Đilvesi Đ, Dixit A, Donoghue E, Dreier J, Dulière GL, Ercole A, Esser P, Ezer E, Fabricius M, Feigin VL, Foks K, Frisvold S, Furmanov A, Gagliardo P, Galanaud D, Gantner D, Gao G, George P, Ghuysen A, Giga L, Glocker B, Golubović J, Gomez PA, Gratz J, Gravesteijn B, Grossi F, Gruen RL, Gupta D, Haagsma JA, Haitsma I, Helbok R, Helseth E, Horton L, Huijben J, Jacobs B, Jankowski S, Jarrett M, Jiang JY, Johnson F, Jones K, Karan M, Kolias AG, Kompanje E, Kondziella D, Kornaropoulos E, Koskinen LO, Kovács N, Lagares A, Lanyon L, Laureys S, Lecky F, Ledoux D, Lefering R, Legrand V, Lejeune A, Levi L, Lightfoot R, Maegele M, Majdan M, Manara A, Manley G, Maréchal H, Martino C, Mattern J, McMahon C, Melegh B, Menovsky T, Mikolic A, Misset B, Muraleedharan V, Murray L, Nair N, Negru A, Nelson D, Newcombe V, Nieboer D, Nyirádi J, Oresic M, Ortolano F, Otesile O, Palotie A, Parizel PM, Payen JF, Perera N, Perlbarg V, Persona P, Piippo-Karjalainen A, Pirinen M, Ples H, Polinder S, Pomposo I, Posti JP, Puybasset L, Rădoi A, Ragauskas A, Raj R, Rambadagalla M, Rehorčíková V, Retel Helmrich I, Rhodes J, Richardson S, Richter S, Ripatti S, Rocka S, Roe C, Roise O, Rosand J, Rosenfeld J, Rosenlund C, Rosenthal G, Rossaint R, Rossi S, Rueckert D, Rusnák M, Sahuquillo J, Sakowitz O, Sanchez-Porras R, Sandor J, Schäfer N, Schmidt S, Schoechl H, Schoonman G, Schou RF, Schwendenwein E, Sewalt C, Skandsen T, Smielewski P, Sorinola A, Stamatakis E, Stanworth S, Kowark A, Stevens R, Stewart W, Stocchetti N, Sundström N, Takala R, Tamás V, Tamosuitis T, Taylor MS, Te Ao B, Tenovuo O, Theadom A, Thomas M, Tibboel D, Timmers M, Tolias C, Trapani T, Tudora CM, Unterberg A, Vajkoczy P, Valeinis E, Vallance S, Vámos Z, Van der Jagt M, van der Naalt J, Van der Steen G, van Dijck JT, Van Hecke W, van Heugten C, Van Praag D, Van Veen E, van Wijk R, Vande Vyvere T, Vargiolu A, Vega E, Velt K, Verheyden J, Vespa PM, Vik A, Vilcinis R, von Steinbüchel N, Voormolen D, Vulekovic P, Wang KK, Wiegers E, Williams G, Wilson L, Winzeck S, Wolf S, Yang Z, Ylén P, Zeiler FA, Ziverte A, Zoerle T. Surgery versus conservative treatment for traumatic acute subdural haematoma: a prospective, multicentre, observational, comparative effectiveness study. Lancet Neurol 2022; 21:620-631. [DOI: 10.1016/s1474-4422(22)00166-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/04/2022] [Accepted: 04/06/2022] [Indexed: 01/05/2023]
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Horváth Z, Lukács M, Szívos L, Barzó P. Localization of macroscopically undetectable intramedullary hematoma by intraoperative epidural motor evoked potential. Clin Neurophysiol Pract 2022; 7:129-134. [PMID: 35586312 PMCID: PMC9108512 DOI: 10.1016/j.cnp.2022.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 04/07/2022] [Accepted: 04/14/2022] [Indexed: 11/28/2022] Open
Abstract
Introduction Intramedullary hematoma is an uncommon, serious neurological disease, representing a diagnostic challenge. The preferred treatment is surgical. In most of the cases the lesion can be identified macroscopically. Otherwise, finding the optimal place to perform myelotomy is demanding. Intraoperative neurophysiological monitoring plays an important role in preventing surgical complications, but its versatility for localization has not been studied so far. Case report The present case report describes a 17-year-old patient with flaccid right inferior monoparesis (later paraparesis), ipsilateral loss of proprioception and vibration sense, contralateral analgesia below the T10 dermatome level and urinary retention (Brown-Séquard syndrome). The MRI revealed an intramedullary hematoma at the level of T8-T9 vertebral bodies. Digital subtraction angiography did not identify any vascular malformation. Urgent surgical intervention was performed. In order to prevent any complication somatosensory-evoked potential (SSEP), transcranial and epidural motor-evoked potential (tcMEP, eMEP) recordings were planned. SSEP in response to right tibial nerve stimulation and tcMEP were absent bilaterally. From electrophysiological point of view, the eMEP revealed a total conduction block of the corticospinal tract. In the absence of typical macroscopic signs (discoloration, swelling, abnormal vascularization etc.), the small intramedullary hematoma could not be identified. Therefore, it was decided to adopt eMEP technique for mapping and localizing the conduction block intraoperatively by changing the distance between the two electrodes used for recording. The hematoma was precisely localized and successfully evacuated. Postoperatively, a slow but continuous improvement was noted. Conclusion Intraoperative neurophysiological monitoring has been suggested to play crucial role in spinal cord surgery. To our knowledge, this is the first case report using eMEP recording for guiding and localizing of an intramedullary hematoma. Beside the clear limitations of our study, it could result in a novel application of the aforementioned monitoring technique.
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Affiliation(s)
- Zoltán Horváth
- Department of Neurosurgery, University of Szeged, Hungary
- Department of Neurology, University of Szeged, Hungary
| | - Melinda Lukács
- Department of Neurosurgery, University of Szeged, Hungary
- Department of Neurology, University of Szeged, Hungary
| | - László Szívos
- Department of Neurosurgery, University of Szeged, Hungary
| | - Pál Barzó
- Department of Neurosurgery, University of Szeged, Hungary
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11
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Van Praag DL, Wouters K, Van Den Eede F, Wilson L, Maas AI, Åkerlund C, Amrein K, Andelic N, Andreassen L, Anke A, Antoni A, Audibert G, Azouvi P, Azzolini ML, Bartels R, Barzó P, Beauvais R, Beer R, Bellander BM, Belli A, Benali H, Berardino M, Beretta L, Blaabjerg M, Bragge P, Brazinova A, Brinck V, Brooker J, Brorsson C, Buki A, Bullinger M, Cabeleira M, Caccioppola A, Calappi E, Calvi MR, Cameron P, Lozano GC, Carbonara M, Cavallo S, Chevallard G, Chieregato A, Citerio G, Ceyisakar I, Clusmann H, Coburn M, Coles J, Cooper JD, Correia M, Čović A, Curry N, Czeiter E, Czosnyka M, Dahyot-Fizelier C, Dark P, Dawes H, De Keyser V, Degos V, Della Corte F, Boogert HD, Depreitere B, Đilvesi Đ, Dixit A, Donoghue E, Dreier J, Dulière GL, Ercole A, Esser P, Ezer E, Fabricius M, Feigin VL, Foks K, Frisvold S, Furmanov A, Gagliardo P, Galanaud D, Gantner D, Gao G, George P, Ghuysen A, Giga L, Glocker B, Golubovic J, Gomez PA, Gratz J, Gravesteijn B, Grossi F, Gruen RL, Gupta D, Haagsma JA, Haitsma I, Helbok R, Helseth E, Horton L, Huijben J, Hutchinson PJ, Jacobs B, Jankowski S, Jarrett M, Jiang JY, Johnson F, Jones K, Karan M, Kolias AG, Kompanje E, Kondziella D, Koraropoulos E, Koskinen LO, Kovács N, Kowark A, Lagares A, Lanyon L, Laureys S, Lecky F, Ledoux D, Lefering R, Legrand V, Lejeune A, Levi L, Lightfoot R, Lingsma H, Maas AI, Castaño-León AM, Maegele M, Majdan M, Manara A, Manley G, Martino C, Maréchal H, Mattern J, McMahon C, Melegh B, Menon D, Menovsky T, Mikolic A, Misset B, Muraleedharan V, Murray L, Negru A, Nelson D, Newcombe V, Nieboer D, Nyirádi J, Olubukola O, Oresic M, Ortolano F, Palotie A, Parizel PM, Payen JF, Perera N, Perlbarg V, Persona P, Peul W, Piippo-Karjalainen A, Pirinen M, Ples H, Polinder S, Pomposo I, Posti JP, Puybasset L, Radoi A, Ragauskas A, Raj R, Rambadagalla M, Rhodes J, Richardson S, Richter S, Ripatti S, Rocka S, Roe C, Roise O, Rosand J, Rosenfeld JV, Rosenlund C, Rosenthal G, Rossaint R, Rossi S, Rueckert D, Rusnák M, Sahuquillo J, Sakowitz O, Sanchez-Porras R, Sandor J, Schäfer N, Schmidt S, Schoechl H, Schoonman G, Schou RF, Schwendenwein E, Sewalt C, Skandsen T, Smielewski P, Sorinola A, Stamatakis E, Stanworth S, Stevens R, Stewart W, Steyerberg EW, Stocchetti N, Sundström N, Synnot A, Takala R, Tamás V, Tamosuitis T, Taylor MS, Ao BT, Tenovuo O, Theadom A, Thomas M, Tibboel D, Timmers M, Tolias C, Trapani T, Tudora CM, Unterberg A, Vajkoczy P, Vallance S, Valeinis E, Vámos Z, van der Jagt M, Van der Steen G, van der Naalt J, van Dijck JT, van Essen TA, Van Hecke W, van Heugten C, Van Praag D, Vyvere TV, van Wijk RP, Vargiolu A, Vega E, Velt K, Verheyden J, Vespa PM, Vik A, Vilcinis R, Volovici V, von Steinbüchel N, Voormolen D, Vulekovic P, Wang KK, Wiegers E, Williams G, Wilson L, Winzeck S, Wolf S, Yang Z, Ylén P, Younsi A, Zeiler FA, Zelinkova V, Ziverte A, Zoerle T. Neurocognitive correlates of probable posttraumatic stress disorder following traumatic brain injury. Brain and Spine 2022; 2:100854. [PMID: 36248103 PMCID: PMC9560676 DOI: 10.1016/j.bas.2021.100854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 12/07/2021] [Accepted: 12/16/2021] [Indexed: 01/17/2023]
Abstract
Introduction Neurocognitive problems associated with posttraumatic stress disorder (PTSD) can interact with impairment resulting from traumatic brain injury (TBI). Research question We aimed to identify neurocognitive problems associated with probable PTSD following TBI in a civilian sample. Material and methods The study is part of the CENTER-TBI project (Collaborative European Neurotrauma Effectiveness Research) that aims to better characterize TBI. For this cross-sectional study, we included patients of all severities aged over 15, and a Glasgow Outcome Score Extended (GOSE) above 3. Participants were assessed at six months post-injury on the PTSD Checklist-5 (PCL-5), the Trail Making Test (TMT), the Rey Auditory Verbal Learning Test (RAVLT) and the Cambridge Neuropsychological Test Automated Battery (CANTAB). Primary analysis was a complete case analysis. Regression analyses were performed to investigate the association between the PCL-5 and cognition. Results Of the 1134 participants included in the complete case analysis, 13.5% screened positive for PTSD. Probable PTSD was significantly associated with higher TMT-(B-A) (OR = 1.35, 95% CI: 1.14–1.60, p < .001) and lower RAVLT-delayed recall scores (OR = 0.74, 95% CI: 0.61–0.91, p = .004) after controlling for age, sex, psychiatric history, baseline Glasgow Coma Scale and education. Discussion and conclusion Poorer performance on cognitive tests assessing task switching and, to a lesser extent, delayed verbal recall is associated with probable PTSD in civilians who have suffered TBI. Six months after traumatic brain injury 13.5% of people screen positive for PTSD. Task switching performance and verbal memory are related to probable PTSD. PTSD severity is related to processing speed and task switching performance.
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12
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Fischer-Szatmári T, Fülöp B, Szakács L, Gyura E, Bella Z, Barzó P. Combined Simultaneous Multiportal Approach via Minimally Invasive Transciliary and Endoscopic Endonasal Approaches for Tumors Invading Both the Skull Base and the Sinonasal Area. World Neurosurg 2021; 148:70-79. [PMID: 33418120 DOI: 10.1016/j.wneu.2020.12.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 12/27/2020] [Accepted: 12/28/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND A combined transcranial and transfacial approach has long been the gold standard for surgical management of large tumors with sinonasal and skull base involvement. The extended endoscopic endonasal approach for such pathologies has its advantages, but it has flaws as well, such as anatomic limitations and more ponderous skull base reconstruction and thus higher risk of postoperative complications. Our primary technique for surgical treatment of these pathologies has been a combination of transfacial and minimally invasive transciliary supraorbital keyhole approaches. With the aim to further minimize invasiveness, potential complications, and unsatisfactory aesthetic outcomes during surgical treatment of large tumors invading both the sinonasal area and the skull base, we abandoned the transfacial approach and simultaneously combined the transciliary supraorbital keyhole approach with the endoscopic endonasal approach. METHODS The well-known microscope-assisted minimally invasive approach via a transciliary supraorbital keyhole craniotomy was combined with the endoscopic endonasal approach. RESULTS Six patients with different histologic types of tumors affecting the sinonasal area and the skull base were operated on. The mean operative time was 3 hours, there were no unexpected intraoperative or postoperative complications, and total tumor removal was achieved in each patient. None of the patients experienced complications associated with the surgery during follow-up. CONCLUSIONS Our combined simultaneous multiportal approach enables total tumor eradication with reduced operative time and is associated with minimal intraoperative and postoperative complications, low mortality rate, and excellent cosmetic results.
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Affiliation(s)
- Tamás Fischer-Szatmári
- Department of Neurosurgery, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary.
| | - Béla Fülöp
- Department of Neurosurgery, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - László Szakács
- Department of Otorhinolaryngology and Head and Neck Surgery, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Erika Gyura
- Department of Anaesthesiology and Intensive Therapy, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Zsolt Bella
- Department of Otorhinolaryngology and Head and Neck Surgery, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Pál Barzó
- Department of Neurosurgery, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
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13
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Feng J, van Veen E, Yang C, Huijben JA, Lingsma HF, Gao G, Jiang J, Maas AI, Åkerlund C, Amrein K, Andelic N, Andreassen L, Anke A, Antoni A, Audibert G, Azouvi P, Azzolini ML, Bartels R, Barzó P, Beauvais R, Beer R, Bellander BM, Belli A, Benali H, Berardino M, Beretta L, Blaabjerg M, Bragge P, Brazinova A, Brinck V, Brooker J, Brorsson C, Buki A, Bullinger M, Cabeleira M, Caccioppola A, Calappi E, Calvi MR, Cameron P, Lozano GC, Carbonara M, Cavallo S, Chevallard G, Chieregato A, Citerio G, Care N, Ceyisakar I, Clusmann H, Coburn M, Coles J, Cooper JD, Correia M, Čović A, Curry N, Czeiter E, Czosnyka M, Dahyot-Fizelier C, Dark P, Dawes H, De Keyser V, Degos V, Corte FD, den Boogert H, Depreitere B, Đilvesi Đ, Dixit A, Donoghue E, Dreier J, Dulière GL, Ercole A, Esser P, Ezer E, Fabricius M, Feigin VL, Foks K, Frisvold S, Furmanov A, Gagliardo P, Galanaud, George P, Ghuysen A, Giga L, Glocker B, Golubovic J, Gomez PA, Gratz J, Gravesteijn B, Grossi F, Gruen RL, Gupta D, Haagsma JA, Haitsma I, Helbok R, Helseth E, Horton L, Hutchinson PJ, Jacobs B, Jankowski S, Jarrett M, Johnson F, Jones K, Karan M, Kolias AG, Kompanje E, Kondziella D, Koraropoulos E, Koskinen LO, Kovács N, Kowark A, Lagares A, Lanyon L, Laureys S, Lecky F, Department E, Ledoux D, Lefering R, Legrand V, Lejeune A, Levi L, Lightfoot R, Castaño-León AM, Maegele M, Majdan M, Manara A, Manley G, Martino C, Maréchal H, Mattern J, McMahon C, Melegh B, Menon D, Menovsky T, Mikolic A, Misset B, Muraleedharan V, Murray L, Negru A, Nelson D, Newcombe V, Nieboer D, Nyirádi J, Olubukola O, Oresic M, Ortolano F, Palotie A, Parizel PM, Payen JF, Perera N, Perlbarg V, Persona P, Peul W, Piippo-Karjalainen A, Pirinen M, Ples H, Polinder S, Pomposo I, Posti JP, Puybasset L, Radoi A, Ragauskas A, Raj R, Rambadagalla M, Rhodes J, Richardson S, Richter S, Ripatti S, Rocka S, Roe C, Roise O, Rosand J, Rosenfeld JV, Rosenlund C, Rosenthal G, Rossaint R, Rossi S, Rueckert D, Rusnák M, Sahuquillo J, Sakowitz O, Sanchez-Porras R, Sandor J, Schäfer N, Schmidt S, Schoechl H, Schoonman G, Schou RF, Schwendenwein E, Sewalt C, Skandsen T, Smielewski P, Sorinola A, Stamatakis E, Stanworth S, Stevens R, Stewart W, Steyerberg EW, Stocchetti N, Sundström N, Synnot A, Takala R, Tamás V, Tamosuitis T, Taylor MS, Ao BT, Tenovuo O, Theadom A, Thomas M, Tibboel D, Timmers M, Tolias C, Trapani T, Tudora CM, Vajkoczy P, Vallance S, Valeinis E, Vámos Z, van der Jagt M, Van der Steen G, van der Naalt J, van Dijck JT, van Essen TA, Van Hecke W, van Heugten C, Van Praag D, Vyvere TV, van Wijk RPJ, Vargiolu A, Vega E, Velt K, Verheyden J, Vespa PM, Vik A, Vilcinis R, Volovici V, von Steinbüchel N, Voormolen D, Vulekovic P, Wang KK, Wiegers E, Williams G, Wilson L, Winzeck S, Wolf S, Yang Z, Ylén P, Younsi A, Zeiler FA, Zelinkova V, Ziverte A, Zoerle T, Ma Y, Kang W, Fu S, Luan Y, Qin H, Sun Z, Guo H, Tian H, Ju S, Xu Y, Wei Q, Zhang S, Tu Y, Wang D, Zhang L, Long L, Jiang C, Yang X, Wen L, Liu K, Xu L, Liu J, Sun Z, Chen L, Jiang Y, Xu W, Gao Y, Jiang R, Guo Y, Gao L, Zeng T, Hou L, Zhao L, Zhu X, Lv S, Mou Z, Wu J, Xu Y, Dong B, Yang C, An Z, Wang X, Zhu X, Gu L, Ma C, Sun H, Li W, Huang X, Li L, Qiu B, Bao Y, Qian S, Bu X, Wang Y, Yang L, Fu X, Qian S, Zhang J, Fan S, Wang Y, Bao Y, Wang Y, Chen H, Cui G, Sun C, Guo Z, Li Y, Wang X, Zhou S, Wang X, Zhu X, Zheng G, Huang Q, Zhang Y, Feng H, Huang Y, Ren H, Hou B, Zhou C, Chen J, Hu J, Du Z, Wang S, Xiang P, Huang Y, Qu Y, Yu H, Wang R, Chen J, Chen J, Xu L, Kang P, Chen H, Wu G, Wang M, Li R, Zhang H, Li Y, Sun X, Tan X. Comparison of Care System and Treatment Approaches for Patients with Traumatic Brain Injury in China versus Europe: A CENTER-TBI Survey Study. J Neurotrauma 2020; 37:1806-1817. [PMID: 32174214 DOI: 10.1089/neu.2019.6900] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- Junfeng Feng
- Department of Neurosurgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- Shanghai Institute of Head Trauma, Shanghai, People's Republic of China
| | - Ernest van Veen
- Department of Public Health, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Intensive Care, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Chun Yang
- Department of Neurosurgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- Shanghai Institute of Head Trauma, Shanghai, People's Republic of China
| | - Jilske A. Huijben
- Department of Public Health, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Hester F. Lingsma
- Department of Public Health, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Guoyi Gao
- Department of Neurosurgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- Shanghai Institute of Head Trauma, Shanghai, People's Republic of China
| | - Jiyao Jiang
- Department of Neurosurgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- Shanghai Institute of Head Trauma, Shanghai, People's Republic of China
| | - Andrew I.R. Maas
- Department of Neurosurgery, Antwerp University Hospital and University of Antwerp, Edegem, Belgium
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14
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Dobi Á, Darázs B, Fodor E, Cserháti A, Együd Z, Maráz A, László S, Dodd L, Reisz Z, Barzó P, Oláh J, Hideghéty K. Low Fraction Size Re-irradiation for Large Volume Recurrence of Glial Tumours. Pathol Oncol Res 2020; 26:2651-2658. [PMID: 32648211 PMCID: PMC7471107 DOI: 10.1007/s12253-020-00868-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 06/30/2020] [Indexed: 11/26/2022]
Abstract
The aim of the present study was to evaluate the efficacy of re-irradiation (re-RT) in patients with advanced local relapses of glial tumours and to define the factors influencing the result of the hyper-fractionated external beam therapy on progression after primary management. We have analysed the data of 55 patients with brain tumours (GBM: 28) on progression, who were re-irradiated between January 2007 and December 2018. The mean volume of the recurrent tumour was 118 cm3, and the mean planning target volume (PTV) was 316 cm3, to which 32 Gy was delivered in 20 fractions at least 7.7 months after the first radiotherapy, using 3D conformal radiotherapy (CRT) or intensity modulated radiotherapy (IMRT). The median overall survival (mOS) from the re-RT was 8.4 months, and the 6-month and the 12-month OS rate was 64% and 31%, respectively. The most important factors by univariate analysis, which significantly improved the outcome of re-RT were the longer time interval between the diagnosis and second radiotherapy (p = 0.029), the lower histology grade (p = 0.034), volume of the recurrent tumour (p = 0.006) and Karnofsky performance status (KPS) (p = 0.009) at the re-irradiation. Our low fraction size re-irradiation ≥ 8 months after the first radiotherapy proved to be safe and beneficial for patients with large volume recurrent glial tumours.
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Affiliation(s)
- Ágnes Dobi
- Department of Oncotherapy, University of Szeged, Korányi fasor 12, Szeged, H-6720, Hungary.
| | - Barbara Darázs
- Department of Oncotherapy, University of Szeged, Korányi fasor 12, Szeged, H-6720, Hungary
| | - Emese Fodor
- Department of Oncotherapy, University of Szeged, Korányi fasor 12, Szeged, H-6720, Hungary
| | - Adrienne Cserháti
- Department of Oncotherapy, University of Szeged, Korányi fasor 12, Szeged, H-6720, Hungary
| | - Zsófia Együd
- Department of Oncotherapy, University of Szeged, Korányi fasor 12, Szeged, H-6720, Hungary
| | - Anikó Maráz
- Department of Oncotherapy, University of Szeged, Korányi fasor 12, Szeged, H-6720, Hungary
| | - Szilvia László
- Department of Oncotherapy, University of Szeged, Korányi fasor 12, Szeged, H-6720, Hungary
| | - Leopold Dodd
- Department of Oncotherapy, University of Szeged, Korányi fasor 12, Szeged, H-6720, Hungary
| | - Zita Reisz
- Department of Pathology, University of Szeged, Állomás utca 1, Szeged, H-6725, Hungary
| | - Pál Barzó
- Department of Neurosurgery, University of Szeged, Semmelweis utca 6, Szeged, H-6725, Hungary
| | - Judit Oláh
- Department of Oncotherapy, University of Szeged, Korányi fasor 12, Szeged, H-6720, Hungary
| | - Katalin Hideghéty
- Department of Oncotherapy, University of Szeged, Korányi fasor 12, Szeged, H-6720, Hungary
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15
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Márkos-Gergely G, Watfa K, Balázsfi M, Szegeti A, Barzó P. [Early experiences in surgical treatment of thoracic disc herniation from posterior transdural approach at Neurosurgery Clinic Szeged University]. Ideggyogy Sz 2020; 73:207-212. [PMID: 32579311 DOI: 10.18071/isz.73.0207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Background - Because of the rare occurrence of thoracic disc herniation and surgery needed treatment the used approaches and their efficiency are still subjects of discussions. In Hungarian practice, the most frequent explorations are costotransversectomy and laminectomy, but there are many other important methods available like thoracoscopic and posterior transdural approaches. This case report will present the benefits and the surgical procedure of posterior transdural sequesterectomy, carry out for the first time in Hungary at the Neurosurgical Department on Szeged University. Case presentation - A 50-year-old female patient with achondroplasic nanism has been operated several times since 2011. She suffered from a progressive, multi-segment affected degenerative discopathy and myelopathy. Finally in the background of the recurrent paraparesis was confirmed thoracic disc herniations at the levels of T8 and T9. The use of intraoperative electrophysiology was not feasable, because the earlier described cervical myelopathy. For this reason we used the posterior transdural approach, as the best and safest, visual control warranted technique. Conclusions - The posterior transdural approach offers an alternative option for experienced surgeons, furthermore in contrast with traditional, technically difficult to implement or special instrumentation demanding approaches this technique seems to be more efficient.
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Affiliation(s)
| | | | | | | | - Pál Barzó
- SZTE, SZAKK, Idegsebészeti Klinika, Szeged
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16
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Szegedi V, Paizs M, Baka J, Barzó P, Molnár G, Tamas G, Lamsa K. Robust perisomatic GABAergic self-innervation inhibits basket cells in the human and mouse supragranular neocortex. eLife 2020; 9:51691. [PMID: 31916939 PMCID: PMC6984819 DOI: 10.7554/elife.51691] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 01/08/2020] [Indexed: 01/08/2023] Open
Abstract
Inhibitory autapses are self-innervating synaptic connections in GABAergic interneurons in the brain. Autapses in neocortical layers have not been systematically investigated, and their function in different mammalian species and specific interneuron types is poorly known. We investigated GABAergic parvalbumin-expressing basket cells (pvBCs) in layer 2/3 (L2/3) in human neocortical tissue resected in deep-brain surgery, and in mice as control. Most pvBCs showed robust GABAAR-mediated self-innervation in both species, but autapses were rare in nonfast-spiking GABAergic interneurons. Light- and electron microscopy analyses revealed pvBC axons innervating their own soma and proximal dendrites. GABAergic self-inhibition conductance was similar in human and mouse pvBCs and comparable to that of synapses from pvBCs to other L2/3 neurons. Autaptic conductance prolonged somatic inhibition in pvBCs after a spike and inhibited repetitive firing. Perisomatic autaptic inhibition is common in both human and mouse pvBCs of supragranular neocortex, where they efficiently control discharge of the pvBCs.
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Affiliation(s)
- Viktor Szegedi
- MTA-NAP Research Group for Inhibitory Interneurons and Plasticity, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Melinda Paizs
- MTA-NAP Research Group for Inhibitory Interneurons and Plasticity, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Judith Baka
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Pál Barzó
- Department of Neurosurgery, University of Szeged, Szeged, Hungary
| | - Gábor Molnár
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Gabor Tamas
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Karri Lamsa
- MTA-NAP Research Group for Inhibitory Interneurons and Plasticity, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
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17
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Fejes I, Vörös E, Barzó P, Bajcsi D, Letoha A, Sonkodi S, Ábrahám G, Légrády P. P53 More than 2-Year Follow-up of Resistant Hypertensive Patients with Neurovascular Decompression of the Brain Stem on the Left Side. Artery Res 2020. [DOI: 10.2991/artres.k.191224.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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18
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Balázsfi M, Kis D, Tóth T, Zsoldos T, Barzó P. Radiofrequency facet joint denervation efficiency based on the severity of spondylarthrosis and in osteoporotic vertebral compression fractures. A retrospective study. Clin Neurol Neurosurg 2019; 186:105497. [PMID: 31563692 DOI: 10.1016/j.clineuro.2019.105497] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 08/16/2019] [Accepted: 08/17/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVES Radiofrequency denervation of the facet joints is performed via a well-established method. Its primary, direct indication is a positive response to a nerve block injection (MBB). Our study aimed to find other, effective but indirect indication signs through the retrospective analysis of our patients treated earlier. PATIENTS AND METHODS In our institute between 1 January, 2008 and 31 December, 2017 facet joint denervation has been performed in more than 2000 cases, and we included 529 patients in our retrospective study. We had separate groups for vertebral compression fractures and for spondylarthrosis of different severity (Grade 1; 2-3; 4), thus we assessed the postoperative condition of these patients using Visual Analoge Scale (VAS). The efficacy of the intervention was examined in every groups separately according to symptoms and previous spine surgeries. RESULTS In view of our results, chronic lumbago and dorsalgia that are attributable to osteoporotic vertebral compression fracture are obvious indications if they do not respond to conservative therapy, as 76.8% of such patients remained asymptomatic for minimum 6 months (p = 0,000). Another indication is Grade 2 or 3 chronic spondylarthrosis without radicular involvement, since these groups reported a 51.4% success rate (asymptomatic for minimum 6 months) (p = 0,015). Long term pain relief is obviously impaired by the presence of radicular compression, as we were not able to decrease the pain of 97% of such patients. Our findings also suggest that the vast majority of those who have previously undergone spine surgery cannot benefit from the intervention. CONCLUSION Based on this study, facet joint denervation can serve as an effective therapy supplement in a properly selected group of patients who do not respond to oral NSAIDs, exercise and physiotherapy. By this procedure we found we can reach long term benefit in the groups of osteoporotic vertebral fracture patients and patients with moderate spondylarthrosis. According to our results and the literature datas the properly patient selection for the indication of the RF ablation can be as effective as the controversial diagnostic nerve block injections.
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Affiliation(s)
- Márton Balázsfi
- Department of Neurosurgery, Faculty of Medicine, University of Szeged, Csongrad County, Hungary.
| | - Dávid Kis
- Department of Neurosurgery, Faculty of Medicine, University of Szeged, Csongrad County, Hungary
| | - Tamás Tóth
- Department of Neurosurgery, Faculty of Medicine, University of Szeged, Csongrad County, Hungary
| | - Tamás Zsoldos
- Department of Neurosurgery, Faculty of Medicine, University of Szeged, Csongrad County, Hungary
| | - Pál Barzó
- Department of Neurosurgery, Faculty of Medicine, University of Szeged, Csongrad County, Hungary
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19
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Büki A, Barzó P, Demeter B, Kanizsai P, Ezer E, Tóth P, Horváth P, Varga C. [Guidelines for the treatment of traumatic brain injury - 2017]. Ideggyogy Sz 2019; 70:223-245. [PMID: 29870638 DOI: 10.18071/isz.70.0223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Traumatic brain injury (TBI) is recognized to be the main cause of death and disability in the first four decades representing a major socio-economical problem worldwide. Recent communications revealed a particularly worrying image about the quality of care for TBI in Hungary. For any improvement a systematic approach characterized by utilization of scientific evidence based guidelines forming the basis for close monitoring of the actual care are considered a prerequisite. In Hungary the first evidence based guidelines in the field of TBI have been issued by the National Society for Anesthesiology and Intensive Care more than two decades ago followed by joint guidelines of the Hungarian Neurosurgical Society and the Hungarian College of Neurosurgeons. These publications were primarily based on the work of the European Brain Injury Consortium as well as guidelines issued by the Brain Trauma Foundation. Recent renewal of the latter and a need to refresh the outdated national guidelines was met by a call from regulatory authorities to issue the updated version of the Hungarian TBI-guidelines. The present review is aimed to briefly summarize the most fundamental elements of the national head injury guidelines that would hopefully be officially issued in a far more detailed format soon.
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Affiliation(s)
- András Büki
- Pécsi Tudományegyetem, KK, Idegsebészeti Klinika, Pécs
| | - Pál Barzó
- Szent-Györgyi Albert Tudományegyetem, Idegsebészeti Klinika, Szeged
| | - Béla Demeter
- BAZ Megyei Kórház és Egyetemi Kórház, Idegsebészeti Osztály, Miskolc
| | - Péter Kanizsai
- Semmelweis Egyetem, KK, Sürgôsségi Betegellátó Osztály, Budapest
| | - Erzsébet Ezer
- Pécsi Tudományegyetem, KK, Idegsebészeti Klinika, Pécs.,Pécsi Tudományegyetem, KK, Aneszteziológiai és Intenzív Terápiás Intézet, Pécs
| | - Péter Tóth
- Pécsi Tudományegyetem, KK, Idegsebészeti Klinika, Pécs
| | - Péter Horváth
- Pécsi Tudományegyetem, KK, Idegsebészeti Klinika, Pécs
| | - Csaba Varga
- Somogy Megyei Kaposi Mór Oktató Kórház, Sürgôsségi Betegellátó Centrum, Kaposvár
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20
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Boldog E, Bakken TE, Hodge RD, Novotny M, Aevermann BD, Baka J, Bordé S, Close JL, Diez-Fuertes F, Ding SL, Faragó N, Kocsis ÁK, Kovács B, Maltzer Z, McCorrison JM, Miller JA, Molnár G, Oláh G, Ozsvár A, Rózsa M, Shehata SI, Smith KA, Sunkin SM, Tran DN, Venepally P, Wall A, Puskás LG, Barzó P, Steemers FJ, Schork NJ, Scheuermann RH, Lasken RS, Lein ES, Tamás G. Transcriptomic and morphophysiological evidence for a specialized human cortical GABAergic cell type. Nat Neurosci 2018; 21:1185-1195. [PMID: 30150662 PMCID: PMC6130849 DOI: 10.1038/s41593-018-0205-2] [Citation(s) in RCA: 153] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 06/14/2018] [Indexed: 11/29/2022]
Abstract
We describe convergent evidence from transcriptomics, morphology, and physiology for a specialized GABAergic neuron subtype in human cortex. Using unbiased single-nucleus RNA sequencing, we identify ten GABAergic interneuron subtypes with combinatorial gene signatures in human cortical layer 1 and characterize a group of human interneurons with anatomical features never described in rodents, having large 'rosehip'-like axonal boutons and compact arborization. These rosehip cells show an immunohistochemical profile (GAD1+CCK+, CNR1-SST-CALB2-PVALB-) matching a single transcriptomically defined cell type whose specific molecular marker signature is not seen in mouse cortex. Rosehip cells in layer 1 make homotypic gap junctions, predominantly target apical dendritic shafts of layer 3 pyramidal neurons, and inhibit backpropagating pyramidal action potentials in microdomains of the dendritic tuft. These cells are therefore positioned for potent local control of distal dendritic computation in cortical pyramidal neurons.
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Affiliation(s)
- Eszter Boldog
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Anatomy, Physiology and Neuroscience, University of Szeged, Szeged, Hungary
| | | | | | | | | | - Judith Baka
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Anatomy, Physiology and Neuroscience, University of Szeged, Szeged, Hungary
| | - Sándor Bordé
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Anatomy, Physiology and Neuroscience, University of Szeged, Szeged, Hungary
| | | | | | | | - Nóra Faragó
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Anatomy, Physiology and Neuroscience, University of Szeged, Szeged, Hungary
| | - Ágnes K Kocsis
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Anatomy, Physiology and Neuroscience, University of Szeged, Szeged, Hungary
| | - Balázs Kovács
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Anatomy, Physiology and Neuroscience, University of Szeged, Szeged, Hungary
| | - Zoe Maltzer
- Allen Institute for Brain Science, Seattle, WA, USA
| | | | | | - Gábor Molnár
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Anatomy, Physiology and Neuroscience, University of Szeged, Szeged, Hungary
| | - Gáspár Oláh
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Anatomy, Physiology and Neuroscience, University of Szeged, Szeged, Hungary
| | - Attila Ozsvár
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Anatomy, Physiology and Neuroscience, University of Szeged, Szeged, Hungary
| | - Márton Rózsa
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Anatomy, Physiology and Neuroscience, University of Szeged, Szeged, Hungary
| | | | | | | | | | | | - Abby Wall
- Allen Institute for Brain Science, Seattle, WA, USA
| | - László G Puskás
- Laboratory of Functional Genomics, Department of Genetics, Biological Research Center, Hungarian Academy of Sciences, Szeged, Hungary
| | | | - Frank J Steemers
- Department of Neurosurgery, University of Szeged, Szeged, Hungary
| | | | - Richard H Scheuermann
- J. Craig Venter Institute, La Jolla, CA, USA
- Department of Pathology, University of California, San Diego, CA, USA
| | | | - Ed S Lein
- Allen Institute for Brain Science, Seattle, WA, USA.
| | - Gábor Tamás
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Anatomy, Physiology and Neuroscience, University of Szeged, Szeged, Hungary.
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21
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Varga Á, Veres R, Elek P, Mencser Z, Rideg Z, Barzó P. [Early experience with minimal invasive treatment of thirty-one thoracolumbar injury cases]. Ideggyogy Sz 2018; 71:259-264. [PMID: 30113794 DOI: 10.18071/isz.71.0259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The authors report on their experience with minimal invasive treatment of thirtyone thoracolumbar injury cases. The medical charts, radiological documentation (preop CT and MRI scans, postop CT scans at 3 and 6 months) were analysed retrospectively. All pedicle screws were inserted appropriately, there was no neurological deterioration or surgical site infection postoperatively. There were three cases of radiological loss of correction, however, these were clinically irrelevant. There were no screw loosening or implant failure observed. According to our experience, which coincedes with literature data, this minimally invasive percutaneous pedicle screw technique can be recommended for the treatment of thoracolumbar injury.
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Affiliation(s)
- Ádám Varga
- Szegedi Tudományegyetem, SZAKK, Idegsebészeti Klinika, Szeged
| | - Róbert Veres
- Szegedi Tudományegyetem, SZAKK, Idegsebészeti Klinika, Szeged
| | - Péter Elek
- Szegedi Tudományegyetem, SZAKK, Idegsebészeti Klinika, Szeged
| | - Zoltán Mencser
- Szegedi Tudományegyetem, SZAKK, Idegsebészeti Klinika, Szeged
| | - Zoltán Rideg
- Szegedi Tudományegyetem, SZAKK, Idegsebészeti Klinika, Szeged
| | - Pál Barzó
- Szegedi Tudományegyetem, SZAKK, Idegsebészeti Klinika, Szeged
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22
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Máté A, Kis D, Czigner A, Fischer T, Halász L, Barzó P. Connectivity-based segmentation of the brainstem by probabilistic tractography. Brain Res 2018; 1690:74-88. [PMID: 29555236 DOI: 10.1016/j.brainres.2018.03.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 02/16/2018] [Accepted: 03/08/2018] [Indexed: 11/26/2022]
Abstract
Diffusion magnetic resonance imaging is a non-invasive tool increasingly used for the investigation of brain connectivity in vivo. In this paper we propose a method that allows segmentation of the brainstem to four subregions (frontopontine, motor, sensory and reticular) based on connections to supratentorial structures, thereby eliminating the need for using anatomical landmarks within the brainstem for the identification of these subregions. The feasibility of connectivity-based brainstem segmentation was investigated in a group of healthy subjects (n = 20). Multifiber probabilistic tractography was performed using the FMRIB Software Library, and connections between a pontomesencephalic seed mask and four supratentorial target regions (anterior and posterior limbs of the internal capsule, sensory and medial thalamus) were used to determine connectivity maps of the brainstem. Results were compared with a neuroanatomy atlas and histological sections, confirming good anatomic correspondence. The four subregions detected by the connectivity-based segmentation showed good intersubject reproducibility. The presented method may be a potential tool to investigate brainstem connectivity in diseases that distort normal anatomy, and quantitative analyses of the diffusion-related parameters may provide additional information on the involvement of brainstem pathways in certain disease states (e.g., traumatic brain injury, demyelinating disorders, brainstem tumors). The potential clinical applicability of the method is demonstrated in two cases of severe traumatic brain injury.
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Affiliation(s)
- Adrienn Máté
- Department of Neurosurgery, Albert Szent-Györgyi Clinical Center, University of Szeged, 6 Semmelweis Street, H-6725 Szeged, Hungary.
| | - Dávid Kis
- Department of Neurosurgery, Albert Szent-Györgyi Clinical Center, University of Szeged, 6 Semmelweis Street, H-6725 Szeged, Hungary
| | - Andrea Czigner
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Szeged, 40 Kossuth L. Boulevard, H-6724 Szeged, Hungary
| | - Tamás Fischer
- Department of Neurosurgery, Albert Szent-Györgyi Clinical Center, University of Szeged, 6 Semmelweis Street, H-6725 Szeged, Hungary
| | - László Halász
- National Institute of Clinical Neurosciences, 44-46 Laky Adolf Street, H-1145 Budapest, Hungary
| | - Pál Barzó
- Department of Neurosurgery, Albert Szent-Györgyi Clinical Center, University of Szeged, 6 Semmelweis Street, H-6725 Szeged, Hungary
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23
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Grünwald F, Barzó P, Ambrus E, Menzel C, Schomburg A, Borda L, Máté E, Bodosi L, Csernay L, Biersack HJ, Pàvics L. Evaluation of Cerebral Vasoreactivity by SPECT and Transcranial Doppler Sonography using the Acetazolamide Test. Nuklearmedizin 2018. [DOI: 10.1055/s-0038-1629709] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
ZusammenfassungBei 29 Patienten (3 Kontrollpersonen, 26 Patienten mit zerebrovaskulärer Erkrankung) wurde prospektiv die Hirn-SPECT mit 99mTC-HMPAO und bei 20 Patienten (3 Kontrollpersonen, 17 Patienten mit ZVK) die transkranielle Dopplersonographie (TCD) vor und nach i. v. Gabe von Azetazolamid durchgeführt. Die Sensitivität der Hirn-SPECT erhöhte sich mit Azetazolamid von 62% auf 77%. Bei Patienten mit reversiblem neurologischem Defizit wurde eine Verbesserung von 50% auf 71 %, bei Patienten mit persistierendem Defizit von 75% auf 83% beobachtet. Die Ergebnisse der Hirn-SPECT und der TCD stimmten in der Beurteilung der zerebro-vaskulären Reservekapazität in 91% der Hemisphären überein. Die Korrelation zwischen den beiden Methoden war statistisch signifikant.
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Németh T, Szakács L, Bella Z, Majoros V, Barzó P, Vörös E. The treatment of pseudoaneurysms with flow diverters after malignant otitis externa. Interv Neuroradiol 2017; 23:609-613. [PMID: 28992722 DOI: 10.1177/1591019917729804] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background We report a case of bilateral malignant otitis externa complicated with bilateral petrous internal carotid artery pseudoaneurysms and their successful treatment with a flow diverter. Case report A 68-year-old woman with serious complications of type II diabetes mellitus had malignant otitis externa on the right side. She was treated with combined antibiotic therapy and underwent mastoidectomy for mastoiditis. She presented at our hospital with acute hemorrhage from the right external auditory canal. The emergency computed tomography (CT) angiography revealed a multiobulated pseudoaneurysm at the petrous segment of the right internal carotid artery. The pseudoaneurysm was treated with a 5 × 40-mm Surpass flow diverter. Three months later, she developed a malignant external otitis on the left side. As the infection progressed, a left-sided mastoiditis, a brain abscess, and a pseudoaneurysm at the petrous segment of the left internal carotid artery developed. The pseudoaneurysm caused bleeding from the left ear, and was treated with a 5 × 50-mm Surpass flow diverter. No recurrent bleeding was observed. Four months later, a follow-up angiography showed complete occlusion of the pseudoaneurysm on the left side, but a residual aneurysm could be detected on the right side. One year after the first intervention, the follow-up CT and magnetic resonance angiography revealed the complete occlusion of the aneurysms bilaterally. Conclusion The use of a flow diverter appears to be an efficient and safe method to occlude carotid pseudoaneurysms even in an inflammatory milieu.
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Affiliation(s)
- Tamás Németh
- 1 Department of Neurosurgery, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - László Szakács
- 2 Department of Otorhinolaryngology and Head and Neck Surgery, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Zsolt Bella
- 2 Department of Otorhinolaryngology and Head and Neck Surgery, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Valéria Majoros
- 3 Department of Anaesthesiology and Intensive Therapy, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Pál Barzó
- 1 Department of Neurosurgery, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Erika Vörös
- 4 Department of Radiology, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary.,5 Affidea Hungary Ltd, Budapest, Hungary
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Halász L, Kis D, Entz L, Tamás G, Klivényi P, Fabó D, Barzó P, Ero˝ss L. EP 77. Target identification in deep brain stimulation for Parkinson’s disease: The role of probabilistic tractography. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2016.05.259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Molnár G, Rózsa M, Baka J, Holderith N, Barzó P, Nusser Z, Tamás G. Human pyramidal to interneuron synapses are mediated by multi-vesicular release and multiple docked vesicles. eLife 2016; 5. [PMID: 27536876 PMCID: PMC4999310 DOI: 10.7554/elife.18167] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 08/15/2016] [Indexed: 01/08/2023] Open
Abstract
Classic theories link cognitive abilities to synaptic properties and human-specific biophysical features of synapses might contribute to the unparalleled performance of the human cerebral cortex. Paired recordings and multiple probability fluctuation analysis revealed similar quantal sizes, but 4-times more functional release sites in human pyramidal cell to fast-spiking interneuron connections compared to rats. These connections were mediated on average by three synaptic contacts in both species. Each presynaptic active zone (AZ) contains 6.2 release sites in human, but only 1.6 in rats. Electron microscopy (EM) and EM tomography showed that an AZ harbors 4 docked vesicles in human, but only a single one in rats. Consequently, a Katz's functional release site occupies ~0.012 μm(2) in the human presynaptic AZ and ~0.025 μm(2) in the rat. Our results reveal a robust difference in the biophysical properties of a well-defined synaptic connection of the cortical microcircuit of human and rodents.
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Affiliation(s)
- Gábor Molnár
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Márton Rózsa
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Judith Baka
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Noémi Holderith
- Institute of Experimental Medicine, Hungarian Academy of Sciences, Budapest, Hungary
| | - Pál Barzó
- Department of Neurosurgery, University of Szeged, Szeged, Hungary
| | - Zoltan Nusser
- Institute of Experimental Medicine, Hungarian Academy of Sciences, Budapest, Hungary
| | - Gábor Tamás
- MTA-SZTE Research Group for Cortical Microcircuits, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
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Faragó N, Kocsis ÁK, Braskó C, Lovas S, Rózsa M, Baka J, Kovács B, Mikite K, Szemenyei V, Molnár G, Ozsvár A, Oláh G, Piszár I, Zvara Á, Patócs A, Barzó P, Puskás LG, Tamás G. Human neuronal changes in brain edema and increased intracranial pressure. Acta Neuropathol Commun 2016; 4:78. [PMID: 27487831 PMCID: PMC4972952 DOI: 10.1186/s40478-016-0356-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 07/28/2016] [Indexed: 12/19/2022] Open
Abstract
Functional and molecular changes associated with pathophysiological conditions are relatively easily detected based on tissue samples collected from patients. Population specific cellular responses to disease might remain undiscovered in samples taken from organs formed by a multitude of cell types. This is particularly apparent in the human cerebral cortex composed of a yet undefined number of neuron types with a potentially different involvement in disease processes. We combined cellular electrophysiology, anatomy and single cell digital PCR in human neurons identified in situ for the first time to assess mRNA expression and corresponding functional changes in response to edema and increased intracranial pressure. In single pyramidal cells, mRNA copy numbers of AQP1, AQP3, HMOX1, KCNN4, SCN3B and SOD2 increased, while CACNA1B, CRH decreased in edema. In addition, single pyramidal cells increased the copy number of AQP1, HTR5A and KCNS1 mRNAs in response to increased intracranial pressure. In contrast to pyramidal cells, AQP1, HMOX1and KCNN4 remained unchanged in single cell digital PCR performed on fast spiking cells in edema. Corroborating single cell digital PCR results, pharmacological and immunohistochemical results also suggested the presence of KCNN4 encoding the α-subunit of KCa3.1 channels in edema on pyramidal cells, but not on interneurons. We measured the frequency of spontaneous EPSPs on pyramidal cells in both pathophysiological conditions and on fast spiking interneurons in edema and found a significant decrease in each case, which was accompanied by an increase in input resistances on both cell types and by a drop in dendritic spine density on pyramidal cells consistent with a loss of excitatory synapses. Our results identify anatomical and/or physiological changes in human pyramidal and fast spiking cells in edema and increased intracranial pressure revealing cell type specific quantitative changes in gene expression. Some of the edema/increased intracranial pressure modulated and single human pyramidal cell verified gene products identified here might be considered as novel pharmacological targets in cell type specific neuroprotection.
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Kuncz A, Vörös E, Barzó P, Tajti J, Milassin P, Mucsi Z, Elek P, Benedek K, Tarjányi J, Bodosi M. Comparison of Clinical Symptoms and Magnetic Resonance Angiographic (MRA) Results in Patients with Trigeminal Neuralgia and Persistent Idiopathic Facial Pain. Medium-Term Outcome after Microvascular Decompression of Cases with Positive MRA Findings. Cephalalgia 2016; 26:266-76. [PMID: 16472332 DOI: 10.1111/j.1468-2982.2005.01030.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To evaluate whether NC could be demonstrated preoperatively, high-resolution magnetic resonance angiography (MRA) was performed in 287 consecutive patients with TN and persistent idiopathic facial pain (PIFP) on a 0.5-T and a 1-T MR unit. Depending on the clinical symptoms, the TN cases were divided into typical TN and trigeminal neuralgia with non-neuralgic interparoxysmal pain (TNWIP) groups. Microvascular decompression (MVD) was performed in 103 of the MRA-positive cases. The patients were followed up postoperatively for from 1 to 10 years. The clinical symptoms were compared with the imaging results. The value of MRA was assessed on the basis of the clinical symptoms and surgical findings. The outcome of MVD was graded as excellent, good or poor. The clinical symptoms were compared with the type of vascular compression and the outcome of MVD. The MRA image was positive in 161 (56%) of the 287 cases. There were significant differences between the clinical groups: 66.5% of the typical TN group, 47.5% of the TNWIP group and 3.4% of the PIFP group were positive. The quality of the MR unit significantly determined the ratio of positive/negative MRA results. The surgical findings corresponded with the MRA images. Six patients from the MRA-negative group were operated on for selective rhizotomy and no NC was found. Venous compression of the trigeminal nerve was observed in a significantly higher proportion in the background of TNWIP than in that of typical TN on MRA imaging (24.1% and 0.8%, respectively) and also during MVD (31.2% and 1.2%, respectively). Four years following the MVD, 69% of the patients gave an excellent, 23% a good and 8% a poor result. The rate of some kind of recurrence of pain was 20% in the typical TN and 44% in TNWIP group. The rate of recurrence was 57% when pure venous compression was present. The only patient who was operated on from the PIFP group did not react to the MVD. The clinical symptoms and preoperative MRA performed by at least a 1-T MR unit furnish considerable information, which can play a role in the planning of the treatment of TN.
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Affiliation(s)
- A Kuncz
- Department of Neurosurgery, Faculty of Medicine, University of Szeged, Szeged, Hungary.
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Fülöp B, Bella Z, Palágyi P, Barzó P. [ENDOSCOPIC REMOVAL OF TUBERCULUM SELLAE MENINGEOMA THROUGH ENDONASAL TRANSSPHENOIDAL APPROACH]. Ideggyogy Sz 2016; 69:133-138. [PMID: 27188006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Experiences acquired in our department with endoscope assisted microsurgical transsphenoidal pituitary surgery encouraged us to expanded the endoscopic approach to skull base lesions. The endoscopic endonasal transsphenoidal approach proved to be less traumatic to the traditional microsurgical approaches, yet very effective. The endoscopic transsphenoidal technique was applied in a patient havin anterior skull base tumor. The patient was a 49-year-old woman with several months history of left visual defect. The magnetic resonance (MR) scans of the skull revealed a midline anterior fossa space-occupying lesion measuring 21 x 16 x 22 mm located on planum sphenoidale, tuberculum sellae and intrasellar. The tumor compressed both optic nerves and optic chiasm. Total resection of the tumor was achieved by use of endoscopic transnasal, transsphenoidal technique. This is the first reported case of an anterior fossa meningeoma being treated by an endoscopic transsphenoidal technique in Hungary.
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Szikra P, Boda K, Rarosi F, Thury A, Barzó P, Németh T, Vörös E. Aortic arch and common carotid artery plaques with soft components pose a substantial risk of cerebral embolization during carotid stenting. Interv Neuroradiol 2016; 22:438-44. [PMID: 26921167 DOI: 10.1177/1591019916633242] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Accepted: 01/25/2016] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES A higher rate of embolization is considered a disadvantage of carotid stenting (CAS), when compared with carotid endarterectomy. Plaques in the aortic arch (AA) and the common carotid artery (CCA) may be additional sources of embolization to stented internal carotid plaques during CAS. In this study, we aimed to investigate the relationship between these plaques and intracerebral embolization. METHODS We analyzed the occurrence and composition of plaques in the AA and CCA by computed tomography angiography (CTA) in 101 consecutive cases of CAS. Cases of peri-procedural embolization were detected on diffusion-weighted imaging as lesions demonstrating diffusion restriction. We applied the χ(2) and Fisher's exact tests, as well as logistic regression models. RESULTS The occurrence of plaques in the AA and CCA was significantly related to the appearance of new diffusion-weighted imaging lesions (p = 0.013 and p = 0.004, respectively). Patients with soft plaques in the AA or CCA had a significantly higher risk of embolization than those without plaques (p = 0.012 and p = 0.006, respectively). In contrast, homogeneously calcified plaques did not pose significantly higher risks. CONCLUSIONS Soft plaques in the AA and CCA result in a substantial risk of embolization during CAS. Use of a CTA examination of the AA and the CCA in patients with carotid stenosis may help to select lower-risk patients for CAS.
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Affiliation(s)
- Péter Szikra
- Department of Radiology, Medical University Center, University of Szeged, Szeged, Hungary
| | - Krisztina Boda
- Department of Medical Physics and Informatics, Medical University Center, University of Szeged, Szeged, Hungary
| | - Ferenc Rarosi
- Department of Medical Physics and Informatics, Medical University Center, University of Szeged, Szeged, Hungary
| | - Attila Thury
- Department of Cardiology, Medical University Center, University of Szeged, Szeged, Hungary
| | - Pál Barzó
- Department of Neurosurgery, University of Szeged, Medical University Center, Szeged, Hungary
| | - Tamás Németh
- Department of Neurosurgery, University of Szeged, Medical University Center, Szeged, Hungary
| | - Erika Vörös
- Department of Radiology, Medical University Center, University of Szeged, Szeged, Hungary
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Fülöp B, Bella Z, Palágyi P, Barzó P. Tuberculum sellae meningeoma endoszkópos eltávolítása endonasalis transsphenoidalis feltárásból. Ideggyogy Sz 2016. [DOI: 10.18071/isz.69.0133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Dobi A, Cserhati A, Maráz A, Mózes P, Fodor E, Együd Z, Szabó C, Kószó R, Varga Z, Gróh F, Kahán S, Csenki M, Barzó P, Tiszlavicz L, Hideghéty K. EP-1299: Simultaneous integrated boost, a novel approach in the management of brain metastases. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41291-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kis D, Máté A, Kincses ZT, Vörös E, Barzó P. The role of probabilistic tractography in the surgical treatment of thalamic gliomas. Neurosurgery 2015; 10 Suppl 2:262-72; discussion 272. [PMID: 24594925 DOI: 10.1227/neu.0000000000000333] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Thalamic gliomas represent a great challenge for neurosurgeons because of the high surgical risk of damaging the surrounding anatomy. Preoperative planning may considerably help the surgeon find the most ideal operative trajectory, avoiding thalamic nuclei and important white matter pathways adjacent to the tumor tissue. Thalamic segmentation is a promising imaging tool based on diffusion tensor magnetic resonance imaging. It provides the possibility to predict the relationship of the tumor to thalamic nuclei. OBJECTIVE To propose a new tool in thalamic glioma surgery that may help to differentiate between normal thalamus and tumor tissue, making preoperative planning possible and facilitating the choice of the optimal surgical approach and trajectory for neuronavigation-assisted surgery. METHODS Four patients with thalamic gliomas preoperatively underwent conventional and diffusion-weighted magnetic resonance imaging conducted on 1.5 T. Subsequently, probabilistic tractography and thalamic segmentation were performed with the FSL Software as preoperative planning. We also present a case when thalamic segmentation was applied retrospectively using preoperative images. All patients went through neuronavigation-assisted surgery (1 partial, 4 subtotal resections). RESULTS Surgery performed based on the output of thalamic segmentation caused no deterioration in the neurological symptoms of our patients. Indeed, we noticed improvement in the neurological condition in 3 cases; furthermore, in 2 patients, a concern-free state was achieved. CONCLUSION We suggest that thalamic segmentation may be applied successfully and routinely in the surgical treatment of thalamic gliomas.
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Affiliation(s)
- Dávid Kis
- *Department of Neurosurgery, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary; ‡Department of Neurology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary; §International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic; ‖Diagnoscan Hungary Ltd., Budapest, Hungary; ¶Department of Radiology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
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Daróczi B, Szántó E, Tóth J, Barzó P, Bognár L, Bakó G, Szántó J, Mózes P, Hideghéty K. Post-operative management of primary glioblastoma multiforme in patients over 60 years of age. Ideggyogy Sz 2013; 66:391-398. [PMID: 24555238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND AND PURPOSE Optimal treatment for elderly patients with glioblastoma multiforme is not well defined. We evaluated the efficacy of post-operative radiotherapy with or without concomitant and/or adjuvant temozolomide in patient, aged > or = 60 years to assess survival and identify prognostic factors of survival. METHODS A retrospective analysis of overall survival and progression-free survival in patients with newly diagnosed glioblastoma multiforme aged > or = 60 years treated with post-operative radiotherapy with or without temozolomide chemotherapy was conducted at our institutions. Prognostic factors were determined by univariate and multivariate analyses. RESULTS Of 75 study participants (54.7% male; median age at first diagnosis, 65.1 years), 29 (38.7%) underwent gross total resection, whereas others underwent partial resection or biopsy only. All but 1 patient received radiotherapy. Twenty patients received concomitant temozolomic e only. Adjuvant temozolomide (1-50 cycles) was administered in 42 patients; 16 received > or = 6 cycles. Median overall survival was 10.3 months. One- and 2-year overall survival rates were 42.6% and 6.7%, respectively. Median progression-free survival was 4.1 months. Radiochemotherapy was generally well tolerated. Median overall survival was 15.3 and 29.6 months for patients who received 6-12 cycles and >12 cycles of adjuvant temozolomide, respectively. There were no significant differences in overall survival between age groups (60-64, 65-69, and > or = 70 years). Adjuvant temozolomide, Karnofsky performance status > or = 70, and additional surgery after progression were significant prognostic factors of longer overall survival (p<0.05). CONCLUSIONS Radiochemotherapy, including > or = 6 cycles of adjuvant temozolomide, was safe and prolonged survival of glioblastoma patients aged > or = 60 years. Aggressive therapy should not be withheld from patients aged > or = 60 years with good performance status because of age.
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Affiliation(s)
- Borbála Daróczi
- University of Debrecen, Division of Geriatrics, 3rd Department of Internal Medicine, Debrecen.
| | - Erika Szántó
- University of Szeged, Department of Oncotherapy, Szeged
| | - Judit Tóth
- University of Debrecen, Department of Oncology, Debrecen
| | - Pál Barzó
- University of Szeged, Department of Neurosurgery, Szeged
| | - László Bognár
- University of Debrecen, Department of Neurosurgery, Debrecen
| | - Gyula Bakó
- University of Debrecen, Division of Geriatrics, 3rd Department of Internal Medicine, Debrecen
| | - János Szántó
- University of Debrecen, Department of Oncology, Debrecen
| | - Petra Mózes
- University of Szeged, Department of Oncotherapy, Szeged
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Kincses ZT, Szabó N, Valálik I, Kopniczky Z, Dézsi L, Klivényi P, Jenkinson M, Király A, Babos M, Vörös E, Barzó P, Vécsei L. Target identification for stereotactic thalamotomy using diffusion tractography. PLoS One 2012; 7:e29969. [PMID: 22238685 PMCID: PMC3251609 DOI: 10.1371/journal.pone.0029969] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Accepted: 12/10/2011] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Stereotactic targets for thalamotomy are usually derived from population-based coordinates. Individual anatomy is used only to scale the coordinates based on the location of some internal guide points. While on conventional MR imaging the thalamic nuclei are indistinguishable, recently it has become possible to identify individual thalamic nuclei using different connectivity profiles, as defined by MR diffusion tractography. METHODOLOGY AND PRINCIPAL FINDINGS Here we investigated the inter-individual variation of the location of target nuclei for thalamotomy: the putative ventralis oralis posterior (Vop) and the ventral intermedius (Vim) nucleus as defined by probabilistic tractography. We showed that the mean inter-individual distance of the peak Vop location is 7.33 mm and 7.42 mm for Vim. The mean overlap between individual Vop nuclei was 40.2% and it was 31.8% for Vim nuclei. As a proof of concept, we also present a patient who underwent Vop thalamotomy for untreatable tremor caused by traumatic brain injury and another patient who underwent Vim thalamotomy for essential tremor. The probabilistic tractography indicated that the successful tremor control was achieved with lesions in the Vop and Vim respectively. CONCLUSIONS Our data call attention to the need for a better appreciation of the individual anatomy when planning stereotactic functional neurosurgery.
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Affiliation(s)
- Zsigmond Tamás Kincses
- Department of Neurology, Albert Szent-György Clinical Center, University of Szeged, Szeged, Hungary.
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Kuncz A, Vörös E, Barzó P. [Vascular compression syndromes of the cranial nerves]. Ideggyogy Sz 2011; 64:6-13. [PMID: 21428033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The blood vessels which are running nearby the cranial nerves and the brainstem can be elongated; curves and loops of the vessels may develop mostly due to the degenerative alterations of ageing and these vessels can compress the surrounding neural elements. The authors report a review of vascular compression syndromes based on the literature and their own experience. The typical clinical symptoms of the syndromes subserving the proper diagnosis, the pathomechanism, the significance of imaging especially the magnetic resonance angiography, the experience with the surgical technique of microvascular decompression which is the only causal treatment of the syndromes are discussed. In cases of non-responsible medical treatment the microvascular decompression should be the eligible treatment in certain syndromes (trigeminal and glossopharyngeal neuralgia, hemifacial spasm) for it is a highly effective and low risk method.
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Affiliation(s)
- Adám Kuncz
- Szegedi Tudományegyetem, Idegsebészeti Klinika, Szeged.
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Pazdernyik S, Sándor L, Elek P, Barzó P. [Anterior cervical fusion on the lower cervical spine: own clinical experience]. Ideggyogy Sz 2010; 63:25-37. [PMID: 20420121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Both acute and chronic instability of the cervical spine can be succesfully treated by anterior crevical fusion. The main goal is to create a spondylodesis through which the instable motion segments are fixed in the position defined by the surgeon. The spondylodesis is realised by the bone healing of the intervertebral space. The consolidation itself is facilitated by the operative stabilisation of the segments involved, and also by the implantation/transplantation of the osteoproductive/osteoinductive materials. The sooner consolidation is achieved, the more likely it is to be able to avoid the material dependent complications and/or that of dislocation. So as to support this theory a retrospective clinical/radiological study was performed. During this the length and the safety of the consolidation was measured by applying various anterior cervical plating systems. A total of 485 patients having cervical injuries or degenerative disc disease were treated by anterior cervical plating. For bone transplantation partly pure autolog spongious partly autolog cortico-spongious morsalised bone chips, furthermore autolog tricortical bone block were applied. A standard protocoll was used for data collection, evaluation and also follow-up. The patients treated with plate systems were divided into 3 groups: Group 1: Non-locked H-plate system with autogeneous cancellous bone (155 trauma patients, for a total of 210 cervical motion segments, 1.35 segments/patients). Group 2: Non-locked H-plate system with tricortical autograft (167 patients, for a total of 290 cervical motion segments, 1.73 segments/patients). Group 3: Locked cervical plate system with tricortical autograft (73 patients, for a total of 110 cervical motion segments, 1.5 segments/patients). Patients treated with standalone cage belong to group 4. These cages were filled with autogenous cortico-spongiosus bone chips (90 patients, for a total of 90 cervical motion segments, 1.0 segments/patients). Evaluations included postoperative clinical, X-ray and CT examination, and follow-ups at 6, 16, 52, and 104 weeks. We established three grades, and classified the degree of bony fusion between the graft and vertebra: not-yet-fused, fused or non-union. When evaluating the results the following statements/observations were made: a) There is a fast and safe consolidation in the case of those patients that underwent dinamic disc osteosynthesis (p = 0.00001). b) Whereas performing fixation with non-locked or locked screw plate systems and strutgrafted with tricortical autograft created prolonged healing requiring months and developed non-unions more often (non-locked screw-plate system versus locked screw-plate system) (p > 0.05). c) Using locked screw-plate fixation systems non-union rate in our study was 21%, suggesting that this form of fixation has only a limited use. d) In our study complete consolidation without pseudoarthrosis was achieved by using standalone cages filled with autolog cortico-spongiosus bone chips, but bony healing was delayed due to cage coating and the substitution of pure autogenous spongiosa for cortico-spongiosus bone chips. It is recommended to treat acute/chronic instability of the cervical spine both by using non-fixed plate system with autolog cancellosus bone and by standalone cage filled with cortico-spongiosus bone chips as well. It is worth keeping in mind that by applying this lattest an extra surgery to harvest the graft will be avoided.
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Affiliation(s)
- Szilárd Pazdernyik
- Szegedi Tudományegyetem, Altalános Orvostudományi Kar, Idegsebészeti Klinika, Szeged.
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Oláh S, Füle M, Komlósi G, Varga C, Báldi R, Barzó P, Tamás G. Regulation of cortical microcircuits by unitary GABA-mediated volume transmission. Nature 2009; 461:1278-81. [PMID: 19865171 PMCID: PMC2771344 DOI: 10.1038/nature08503] [Citation(s) in RCA: 266] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Accepted: 09/16/2009] [Indexed: 11/21/2022]
Abstract
Gamma-aminobutyric acid (GABA) is predominantly released by local interneurons in the cerebral cortex to particular subcellular domains of the target cells1,2. This suggests that compartmentalized, synapse specific action of GABA is required in cortical networks for phasic inhibition2–4. However, GABA released at the synaptic cleft diffuses to receptors outside the postsynaptic density and thus tonically activates extrasynaptic GABAA and GABAB receptors, which include subtypes of both receptor families especially sensitive to low concentrations of GABA3–7. The synaptic and extrasynaptic action of GABA is in line with idea that neurons of the brain use synaptic (or wiring) transmission and nonsynaptic (or volume) transmission for communication8,9. However, reuptake mechanisms restrict the spatial extent of extrasynaptic GABAergic effects10,11 and it was proposed that concerted action of several presynaptic interneurons or sustained firing of individual cells or increased release site density is required to reach ambient GABA levels sufficient to activate extrasynaptic receptors4,9,11–13. Here we show that individual neurogliaform cells release GABA sufficient for volume transmission within the axonal cloud and thus neurogliaform cells do not require synapses to produce inhibitory responses in the overwhelming majority of nearby neurons. Neurogliaform cells suppress connections between other neurons acting on presynaptic terminals which do not receive synapses at all in the cerebral cortex and, moreover, reach extrasynaptic, δ subunit containing GABAA (GABAAδ) receptors responsible for tonic inhibition. We reveal that GABAAδ receptors are localized to neurogliaform cells preferentially among cortical interneurons. Neurosteroids, which are modulators of GABAAδ receptors, alter unitary GABAergic effects between neurogliaform cells. In contrast to the specifically placed synapses formed by other interneurons, the output of neurosteroid sensitive neurogliaform cells represents the ultimate form of spatial unspecificity in GABAergic systems leading to long lasting network hyperpolarization combined with widespread suppression of communication in the local circuit.
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Affiliation(s)
- Szabolcs Oláh
- Research Group for Cortical Microcircuits of the Hungarian Academy of Sciences, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Közép fasor 52, Szeged H-6726, Hungary
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Barzó P. Bronchographische Veränderungen der chronischen Bronchitis. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1228019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Fülöp B, Deak G, Mencser Z, Kuncz A, Barzó P. [Factors affecting the development of chronic hydrocephalus following subarachnoid hemorrhage, with special emphasis on the role of ventricular and lumbar drainage]. Ideggyogy Sz 2009; 62:255-261. [PMID: 19685703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Hydrocephalus is a common complication of aneurysmal subarachnoid hemorrhage. Numerous studies have dealt so far with the triggering cause of the chronic cerebrospinal fluid (CSF) absorptional and circulatory disorders. Despite the fact that these studies gave several different explanations, most of them agreed on the fact that the obstruction of CSF pathway has a crucial role in the development of the clinical feature. By examining three years' clinical cases, the authors were trying to find out which are the factors that influence the development of the late hydrocephalus which follows the subarachnoid hemorrhage; moreover to find out if the incidence of the latter may be decreased by a continuous drainage of CSF which advances its purification. One hundred and seventy-one patients (one hundred and twenty-seven females) were treated by aneurysmal SAH at Department of Neurosurgery, University of Szeged between 2002 and 2005. The following parameters were recorded: gender, clinical state, risk factors (smoking, consuming alcohol and hypertension), the method and the time of surgical treatment as well as CSF drainage. The studies have shown that the risk of incidence of chronic hydrocephalus were higher in men and in case of severe clinical state with severe SAH. The disturbed CSF circulation and/or absorption were positively correlated with consuming alcohol and hypertension, while smoking did not affect it. The rate of the incidence of chronic hydrocephalus among our patients was lower (5.8%) compared to the results of other studies (7-40%) suggests that disturbance of CSF circulation and/or absorption may be avoided in the majority of cases by continuous external ventricular or lumbar CSF drainage, which is applied routinly.
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Affiliation(s)
- Béla Fülöp
- Szegedi Tudományegyetem, Altalános Orvostudományi Kar, Idegsebészeti Klinika, Szeged.
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Bereg E, Tiszlavicz L, Vörös E, Papp T, Barzó P. [Non-obstructive hydrocephalus internus with a rare pathogenesis--mucormycosis]. Ideggyogy Sz 2009; 62:271-275. [PMID: 19685706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The case of a 9-year-old boy is presented in this article who developed a rare fungal infection of central nervous system. The histopathologic examination has revealed mucormycosis. The diagnosis wasn't confirmed microbiologically as the culture and PCR were negativ. After the iv administered Amphotericin B lipid complex the MR images of the brain have improved. The mucormycosis classically develops in immunodeficient patients and presents an acute, fulminant, mostly lethal infection. This case is very unusual, because the chronic, isolated CNS mucormycosis has slowly developed in immuncompetent patient and only one symptom was the long existing headache. The aim of this paper is reporting the case history and to find out the possible way of infection.
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Affiliation(s)
- Edit Bereg
- Szegedi Tudományegyetem, Szent-Györgyi Albert Klinikai Központ, Gyermekgyógyászati Klinika, Szeged.
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Zsoldos T, Molnár A, Jánossy A, Kuncz A, Nagy E, Deák G, Barzó P. [Successful surgical removal of a mesencephalic cavernous angioma, which was responsible for progressive neurological deficits]. Ideggyogy Sz 2008; 61:244-249. [PMID: 18763480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Cavernous angiomas comprise 5-10% of all vascular malformations in the central nervous system, occurring most frequently in the supratentorial region, and 20% of them in the brain stem. According to literature, brain stem cavernous angiomas occur most frequently in the pons (60%), and equally in the mesencephalon (20%) and in medulla oblongata. In clinical evaluation the authors describe the successful removal of a mesencephalic cavernous angioma causing progressive neurological deficits and symptoms. The authors present a case of a 51 year old female, who had developed 1 year prior to her admittance: fatigue, weakness in the right upper limb and fingers, right lower limb ataxia. One month later, her lower right limb developed sensory deficits. The first neurological exploration indicated dysarthria, moderate facial and right hemiparesis, hemihypaesthesia and ataxia. CT and MR imaging indicated multilobulated cavernomas in the mesencephalon. After conservative treatment the patient became almost symptom free, and thus neurosurgical treatment was not discussed. Later on her symptoms fluctuated, but after 6 month she suddenly developed progressive right hemiparesis, right facial weakness, serious dysphasia, and emotional incontinence combined with continuous spastic sobbings. The control MRI showed enlargement of the cavernomas and new extravasation. Surgery was indicated for removing the cavernomas. The left infratentorial, supracerebellar approach revealed a blood engorged cavernoma in the center of the mesencephalon, almost dividing it. The cavernomas and accompanying haematoma was extirpated. The patient's neurological symptoms rapidly improved after surgery, her dysphasia as well as motor weakness have disappeared. Six days after surgery, we discharged a neurologically symptomless and self-supporting patient. The literature and the presented case indicates that the correct timing and proper surgery allows brain stem cavernomas to be safely removed, or significantly bated, which results in the massive regression of neurological symptoms.
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Affiliation(s)
- Tamás Zsoldos
- Szegedi Tudományegyetem, Szent-Györgyi Albert Klinikai Központ, Idegsebészeti Klinika, Szeged.
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Oláh S, Komlósi G, Szabadics J, Varga C, Tóth É, Barzó P, Tamás G. Output of neurogliaform cells to various neuron types in the human and rat cerebral cortex. Front Neural Circuits 2007; 1:4. [PMID: 18946546 PMCID: PMC2526278 DOI: 10.3389/neuro.04.004.2007] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2007] [Accepted: 10/15/2007] [Indexed: 12/04/2022] Open
Abstract
Neurogliaform cells in the rat elicit combined GABAA and GABAB receptor-mediated postsynaptic responses on cortical pyramidal cells and establish electrical synapses with various interneuron types. However, the involvement of GABAB receptors in postsynaptic effects of neurogliaform cells on other GABAergic interneurons is not clear. We measured the postsynaptic effects of neurogliaform cells in vitro applying simultaneous whole-cell recordings in human and rat cortex. Single action potentials of human neurogliaform cells evoked unitary IPSPs composed of GABAA and GABAB receptor-mediated components in various types of inteneuron and in pyramidal cells. Slow IPSPs were combined with homologous and heterologous electrical coupling between neurogliaform cells and several human interneuron types. In the rat, single action potentials in neurogliaform cells elicited GABAB receptor-mediated component in responses of neurogliaform, regular spiking, and fast spiking interneurons following the GABAA receptor-mediated component in postsynaptic responses. In conclusion, human and rat neurogliaform cells elicit slow IPSPs and reach GABAA and GABAB receptors on several interneuron types with a connection-specific involvement of GABAB receptors. The electrical synapses recorded between human neurogliaform cells and various interneuron types represent the first electrical synapses recorded in the human cortex.
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Affiliation(s)
- Szabolcs Oláh
- HAS Research Group for Cortical Microcircuits, Department of Comparative Physiology, University of SzegedHungary
| | - Gergely Komlósi
- HAS Research Group for Cortical Microcircuits, Department of Comparative Physiology, University of SzegedHungary
| | - János Szabadics
- HAS Research Group for Cortical Microcircuits, Department of Comparative Physiology, University of SzegedHungary
| | - Csaba Varga
- HAS Research Group for Cortical Microcircuits, Department of Comparative Physiology, University of SzegedHungary
| | - Éva Tóth
- HAS Research Group for Cortical Microcircuits, Department of Comparative Physiology, University of SzegedHungary
| | - Pál Barzó
- Department of Neurosurgery, University of SzegedHungary
| | - Gábor Tamás
- HAS Research Group for Cortical Microcircuits, Department of Comparative Physiology, University of SzegedHungary
- *Correspondence: Gábor Tamás, HAS Research Group for Cortical Microcircuits, Department of Comparative Physiology, University of Szeged, Közép fasor 52., Szeged, H-6726, Hungary. e-mail:
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Czigner A, Mihály A, Farkas O, Büki A, Krisztin-Péva B, Dobó E, Barzó P. Kinetics of the cellular immune response following closed head injury. Acta Neurochir (Wien) 2007; 149:281-9. [PMID: 17288002 DOI: 10.1007/s00701-006-1095-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2006] [Accepted: 12/08/2006] [Indexed: 12/22/2022]
Abstract
BACKGROUND The contribution of brain edema to brain swelling in cases of traumatic brain injury (TBI) remains a critical problem. We believe that inflammatory reactions may play a fundamental role in brain swelling following a head injury. Although possible roles of microglia activation and the release of mediators have been suggested, direct evidence of cellular immune reactivity in diffuse brain injury following closed head trauma is lacking. Accordingly, the objective of this study was to assess the temporal pattern of microglia activation and lymphocyte migration in an experimental model of TBI. METHOD An impact acceleration TBI model was utilized to induce diffuse brain damage in adult Wistar rats. The animals were separated into three groups: unoperated controls, sham-operated controls and trauma group. At various times after TBI induction (5 min-24 h), rats were perfused transcardially. Sagittal brain sections were analyzed with immunohistochemical markers of CD3 to reveal the presence of T-lymphocytes, and by immunochemistry for the detection of CD11b to reveal microglia activation within the brain parenchyma. FINDINGS In the control groups, scattered T-cells were found in the brain parenchyma. In the trauma group, TBI induced microglia activation and a transient biphasic T-cell infiltration of the brain parenchyma in all regions was found, beginning as early as 30 min post injury and reaching its maximum values at 45 min and 3 h after trauma induction. CONCLUSION These results lead us to suggest that the acute response to severe head trauma with early edema formation is likely to be associated with inflammatory events which might be triggered by activated microglia and infiltrating lymphocytes. It is difficult to overestimate the clinical significance of these observations, as the early and targeted treatment of patients with severe head injuries with immunosuppressive medication may result in a far more favorable outcome.
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Affiliation(s)
- A Czigner
- Department of Anatomy, Faculty of Medicine, University of Szeged, Szeged, Hungary
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Szakács R, Kálmán J, Barzó P, Sas K, Janka Z. [Amnesic syndrome following lesion of the fornix or does reversible Korsakow's syndrome exist?]. Neuropsychopharmacol Hung 2007; 9:39-43. [PMID: 17879564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The 53-year-old female patient had suffered massive subarachnoid bleeding due to rupture of left-localized aneurysm of the anterior communicant artery. Following the neurosurgical intervention, deterioration of consciousness related to strong vasospasm occurred. Cerebral CT examination was performed, showing a 0.5 cm ischaemic lesion of the left hippocampal fornix. Due to intensive therapy, the patient recovered gradually, however considerable short-time memory deficit and severe anterograde amnesia remained. Admission of the patient in psychiatric care 5 weeks after the operation was necessary since acute deterioration had been added to memory disturbance and anterograde amnesia. Clinical features included severe short-time memory deficit, continuous and severe anterograde amnesia, disorientation, alterations of verbal fluency and abstraction. The amnesic syndrome was probably related to the hippocampal damage, but considering the development of cognitive deficits, cerebral CT was performed again, which verified internal hydrocephalus. A ventriculo-peritoneal shunt has been implanted and the patient was re-admitted in psychiatry care because of her memory deficit, anterograde amnesia and disorientation. Thereafter, low doses of citalopram and donepezil therapy was started together with temporarily used antipsychotic medication (risperidone). Gradual, but continuous improvement of memory and cognitive function could be detected, with total recovery after one year. The deficits in long- and short-term memory, orientation and cognition were totally restored.
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Affiliation(s)
- Réka Szakács
- Szegedi Tudományegyetem Altalános Orvostudományi Kar, Pszichiátriai Klinika, Szeged.
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Abstract
Axons in the cerebral cortex receive synaptic input at the axon initial segment almost exclusively from gamma-aminobutyric acid-releasing (GABAergic) axo-axonic cells (AACs). The axon has the lowest threshold for action potential generation in neurons; thus, AACs are considered to be strategically placed inhibitory neurons controlling neuronal output. However, we found that AACs can depolarize pyramidal cells and can initiate stereotyped series of synaptic events in rat and human cortical networks because of a depolarized reversal potential for axonal relative to perisomatic GABAergic inputs. Excitation and signal propagation initiated by AACs is supported by the absence of the potassium chloride cotransporter 2 in the axon.
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Affiliation(s)
- János Szabadics
- Department of Comparative Physiology, University of Szeged, Közèp fasor 52, Szeged, H-6726, Hungary
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Kuncz A, Vörös E, Barzó P, Tajti J, Milassin P, Bodosi M. [The role of MR angiography in predicting operative results of microvascular decompression in patients with trigeminal neuralgia]. Orv Hetil 2005; 146:2595-602. [PMID: 16468614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
INTRODUCTION AND OBJECTIVES The results of medium-term outcome of microvascular decompression (MVD) for trigeminal neuralgia are presented. The authors compare the preoperative 3-dimension magnetic resonance angiography (MRA) results with the surgical findings during MVD. Information, provided by MRA, are evaluated regarding to the prognostic significance in typical TN, atypical TN and persistent idiopathic facial pain (PIFP). The significance of clinical symptoms and the type of neurovascular compression (NC) are investigated in respect of the postoperative success and recurrent symptoms. METHODS AND RESULTS MRA was performed in 310 consecutive patients with TN and PIFP. The MRA image was positive in 179 (58%) of the 310 cases. 68.2% of the typical TN group, 49.2% of the atypical TN group and 3.2% of the PIFP group were positive. MVD was performed in 116 of the MRA positive cases. Four years following the MVD, 69% of the patients gave an excellent and 23% a good result. The surgical findings corresponded with the MRA images. NC could be ruled out in the background of PIFP. The rate of recurrent symptoms following MVD is 21% in the typical TN group while it is 41% in the atypical TN group. The pure venous compression showed 57% pain-recurrence rate following MVD. CONCLUSIONS The clinical symptoms and preoperative MRA carry considerable information, which can predict the outcome of the MVD and the rate of recurrent symptoms. Atypical TN and venous compression are bad prognostic factors.
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Affiliation(s)
- Adám Kuncz
- Szegedi Tudományegyetem, Szent-Györgyi Albert Orvos-és Gyógyszerésztudományi Centrum, Altalános Orvostudományi Kar, Idegsebészeti Klinika.
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Barzó P, Czigner A, Marmarou A, Beaumont A, Deák G, Fatouros P, Corwin F. [Increasing cerebral perfusion pressure in serious cranial injury--contradictory effects of dopamine]. Ideggyogy Sz 2005; 58:233-44. [PMID: 16173272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
BACKGROUND Management of cerebral perfusion pressure is an important element of the treatment of traumatic brain injury. Vasopressors are accepted as a method of choice to increase mean arterial blood pressure and thus cerebral perfusion pressure in the face of rising intracranial pressure. There are, however, some unresolved issues and potential risks to this therapy. MATERIAL AND METHODS This study therefore examines the effects of dopamine on physiological changes as well as on brain edema and water content that can be readily assessed by MRI/MRS in (1) a rodent model of rapidly rising intracranial pressure, caused by diffuse injury with secondary insult and (2) a model of cortical contusion. RESULTS Dopamine was capable of restoring cerebral perfusion pressure in the model of rapidly rising intracranial pressure. However, this was associated with only a partial restoration of cerebral blood flow. In the brain tissue two profiles of change in the apparent diffusion coefficient of water (ADCw) were seen; one in which ADCw recovered to baseline, and one in which ADCw remained persistently low. Despite that dopamine did not alter these profiles, MRI-assessed tissue water content was increased four hours after injury and dopamine increased cerebral water content in both subgroups of injury, especially in the subgroup with a persistently low ADCw (p < 0.01). In the contusion group dopamine significantly worsened the edema both in the injured and in the contralateral area of hippocampus and temporal cortex even though the ADCw values did not change, except for the contralateral hippocampus, where both water content and ADC, values rose with treatment, suggesting extracellular accumulation of water. CONCLUSION The results suggest that dopamine has a double effect--while it temporarily and partially restores cerebral blood perfusion, at the same time it induces an increase in brain swelling and thus an increase in intracranial pressure in some cases. It is possible that in a subgroup of patients vasopressor treatment leads to an opposite effect several hours later. Vasopressor therapy in the clinical setting therefore should be cautiously applied.
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Affiliation(s)
- Pál Barzó
- Szent-Györgyi Albert Orvostudományi Egyetem, Idegsebészeti Klinika, Szeged.
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Tömösvári A, Mencser Z, Futó J, Hortobágyi A, Bodosi M, Barzó P. [Preliminary experience with controlled lumbar drainage in medically refractory intracranial hypertension]. Orv Hetil 2005; 146:159-64. [PMID: 15751510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
INTRODUCTION The contribution of brain edema to brain swelling in cases of traumatic brain injury remains a critical problem. In head injury, the swelling and eventual rise in intracranial pressure is a frequent cause of death, and in survivors the poor prognosis with sustained elevation of ICP has been well documented. OBJECTIVE The objective this study was to evaluate the effect of controlled lumbar cerebrospinal fluid drainage in adult patients with refractory intracranial hypertension following severe brain injury. METHOD The study involved 10 head injured patients (GCS < or = 8) with medically refractory intracranial hypertension. Aggressive treatment included the repeated steps of the Brain Trauma Foundation's guidelines, barbiturate coma and in many cases decompressive craniectomy as well. After institution of a lumbar drain, cerebrospinal fluid drainage was maintained under control of intracranial pressure (ICP) and neurological status. ICP and cerebral perfusion pressure before and after initiation of lumbar cerebrospinal fluid drainage and related complications were documented. RESULTS All patients demonstrated an immediate decrease of ICP (from 30.6 +/- 4.7 mm Hg to 11.5 +/- 3.9 mm Hg, mean +/- SD) and a concomitant increase of cerebral perfusion pressure. In seven patients the decrease of ICP was long lasting and 5 of them had a favourable outcome. Two patients survived with a severe permanent neurologic deficit and only three patients died because of the progressive brain edema, which developed despite of the maximum therapy. CONCLUSION In conclusion we may consider, that controlled lumbar cerebrospinal fluid drainage is a potentially useful treatment in cases of severe traumatic brain injury when maximal medical therapy and ventricular cerebrospinal fluid evacuation have failed to control high intracranial hypertension. The danger of herniation is minimized by considering lumbar drainage in the presence of discernible basilar cisterns only.
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Affiliation(s)
- Adrienn Tömösvári
- Szegedi Tudományegyetem, Altalános Orvostudományi Kar, Aneszteziológiai és Intenzív Terápiás Intézet, Szeged
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Sztriha LK, Vörös E, Sas K, Szentgyörgyi R, Pócsik A, Barzó P, Szikra P, Makai A, Szólics A, Elek P, Rudas L, Vécsei L. Favorable Early Outcome of Carotid Artery Stenting Without Protection Devices. Stroke 2004; 35:2862-6. [PMID: 15514173 DOI: 10.1161/01.str.0000147714.19871.45] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background and Purpose—
Protection devices are increasingly used in carotid artery stenting. However, no randomized trial has been conducted to evaluate the efficacy of such devices, and arguments have also been formulated against their routine use. We set out to investigate the complication rates associated with carotid artery stenting performed without protection devices. Applicability of covered stents in the carotid system was also evaluated.
Methods—
Between January 2001 and July 2003, 245 consecutive patients (260 hemispheres) underwent carotid artery stenting. No protection devices were applied. Covered stents were implanted in 31 (12.1%) cases. The incidence of complications during the intervention and the subsequent 30-day follow-up period was recorded.
Results—
The technical success rate was 98.8%. One postprocedural nonneurological death (0.4%) occurred. Neurological complications (inclusive of transient ischemic attacks) were observed in 14 cases (5.4%). The rate of major complications (death, major stroke, and myocardial infarction) was 1.6% among the symptomatic and 1.5% among the asymptomatic cases. The rate of minor strokes was 3.2% in the symptomatic and 1.5% in the asymptomatic group. Of the neurological complications, 64.3% occurred postprocedurally. No ipsilateral neurological complications were detected in the subgroup treated with covered stents.
Conclusions—
Carotid artery stenting without protection devices appears to be safe. Most of the neurological complications could not have been prevented with protection devices, because they occurred after the intervention. The application of covered stents may reduce the rate of embolization-related complications in the periprocedural period.
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Affiliation(s)
- László K Sztriha
- Department of Neurology, Albert Szent-Györgyi Medical and Pharmaceutical Center, University of Szeged, Semmelweis u. 6, H-6725 Szeged, Hungary.
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