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47 results on '"Halatsch, M.-E."'

1. Glioblastoma treatment using perphenazine to block the subventricular zone’s tumor trophic functions

Author

Kast, RE, Ellingson, BM, Marosi, C, and Halatsch, M-E

Subjects
Brain Disorders, Brain Cancer, Cancer, Rare Diseases, Neurosciences, 6.1 Pharmaceuticals, Evaluation of treatments and therapeutic interventions, Brain Neoplasms, Cerebral Ventricles, Dopamine Antagonists, Glioblastoma, Humans, Neoplastic Stem Cells, Perphenazine, Dopamine receptor, Growth factors, Migration, Subventricular zone, Temozolomide, Trophic factors, Oncology and Carcinogenesis, Oncology & Carcinogenesis
Abstract

We present here a potential new treatment adjunct for glioblastoma. Building on murine studies, a series of papers appeared recently showing that therapeutic irradiation of the ipsilateral subventricular zone (SVZ) retards growth of more peripherally growing cortical glioblastomas in humans, suggesting a tumor trophic function for the SVZ. Further studies showed that SVZ cells migrate out towards a peripheral glioblastoma. Dopamine signaling through D3 subtype receptor indirectly drives this centrifugal migration in humans. Since psychiatry has several drugs with good D3 blocking attributes, such as fluphenazine, or perphenazine, we suggest that adding one of these D3 blocking drugs to current standard treatment of resection followed by temozolomide and irradiation might prolong survival by depriving glioblastoma of the trophic functions previously subserved by dopaminergic signaling on SVZ cells.

Published
2014

6. Procedures performed during neurosurgery residency in Europe

Author

Stienen, M. N., Freyschlag, C. F., Schaller, K., Meling, T., Al-Amin, A., Al-Mahfoudh, R., Amelot, A., Arvidsson, L., Athanasiou, A., Avellan, C. I. A., Bauchet, L., Berilazic, L., Bolger, C., Bourdillon, P., Boviatsis, S., Bozinov, O., Branco, P., Braunsdorf, W., Cahill, J., Clusmann, H., Conrad, J., Cordier, D., Cristino, N., Djilvesi, D., Duerinck, J., Dumot, C., Durak, M. A., Eisenring, C. V., Esposito, G., Finiels, P. -J., Flaskas, T., Fuentes, S., Ganau, M., Georgiadis, I., Georgiopoulos, M., Giakoumettis, D., Gilis, N., Gradil, C., Grau, S. J., Grin, A., Hadjigeorgiou, G., Halatsch, M. -E., Hecht, N., Holling, M., Ilic, R., Iken, L., Santos, N. I., Jacquesson, T., Jalloh, I., Jelaca, B., Kaestner, S., Kalasauskas, D., Kaliyev, A., Kleiber, J. -C., Konczalla, J., Kothbauer, K. F., Kovacevic, V., Krajcinovic, N., Krieg, S. M., Kamarainen, O. -P., Lapcic, M., Lapras, C., Ljungqvist, J., W. B., Lo, Lubrano, V., Majovsky, M., Manet, R., Marchi, F., Medetov, Y., Meling, T. R., Melloni, I., Melot, A., Mertens, P., Metcalfe, S., Moerkve, S. H., Mora, A. R., Musabelliu, E., Naushahi, M. J., Nurzhan, A., Omerhodzic, I., Paldor, I., Pallud, J., Papanastassiou, V., Papic, V., Paschalis, T., Payer, M., Peerdeman, S. M., Peruzzi, P., Segerlind, J. P., Posti, J. P., Proust, F., Regli, L., Rinne, J., Roche, P. -H., Rocka, S., Rotermund, R., Rutherford, S. A., Ratsep, T., Ruter, A., Saarenpaa, I. M., Samanci, M. Y., Samardzic, M., Sampron, N., Sandvik, U., Scerrati, A., Schneider, M., Schul, D. B., Sengul, G., Simon, E., Sinha, S., Solheim, O., Spatola, G., Spektor, S., Sundblom, J., Syrmos, N. C., Teo, M., Thomson, S., Tonchev, N., Tosic, L., Vandertop, W. P., von der Brelie, C., Vuk, A., Walkden, J., Wendel, C., Yaqout, M., Yusupova, M., Zollino, G., University of Zurich, Surgical clinical sciences, Neuroprotection & Neuromodulation, Neurosurgery, IOO, and ANS - Systems & Network Neuroscience

Subjects
Adult, Male, Neurosurgery/education, medicine.medical_specialty, Certification, Caseload, Europe, Neurosurgery, Residency, Training program, Working hour restriction, 610 Medicine & health, Neurosurgical Procedures, NO, 03 medical and health sciences, 10180 Clinic for Neurosurgery, 0302 clinical medicine, Surveys and Questionnaires, Germany, Medicine, Humans, Child, Greece, business.industry, Female sex, Internship and Residency, Mean age, Surgical procedures, Middle Aged, Current analysis, United Kingdom, Original Article - Neurosurgery Training, ddc:616.8, 030220 oncology & carcinogenesis, Surgery, Female, Neurology (clinical), France, business, 030217 neurology & neurosurgery, Switzerland, Demography
Abstract

Background In a previous article (10.1007/s00701-019-03888-3), preliminary results of a survey, aiming to shed light on the number of surgical procedures performed and assisted during neurosurgery residency in Europe were reported. We here present the final results and extend the analyses. Methods Board-certified neurosurgeons of European Association of Neurosurgical Societies (EANS) member countries were asked to review their residency case logs and participate in a 31-question electronic survey (SurveyMonkey Inc., San Mateo, CA). The responses received between April 25, 2018, and April 25, 2020, were considered. We excluded responses that were incomplete, from non-EANS member countries, or from respondents that have not yet completed their residency. Results Of 430 responses, 168 were considered for analysis after checking in- and exclusion criteria. Survey responders had a mean age of 42.7 ± 8.8 years, and 88.8% were male. Responses mainly came from surgeons employed at university/teaching hospitals (85.1%) in Germany (22.0%), France (12.5%), the United Kingdom (UK; 8.3%), Switzerland (7.7%), and Greece (7.1%). Most responders graduated in the years between 2011 and 2019 (57.7%). Thirty-eight responders (22.6%) graduated before and 130 responders (77.4%) after the European WTD 2003/88/EC came into effect. The mean number of surgical procedures performed independently, supervised or assisted throughout residency was 540 (95% CI 424–657), 482 (95% CI 398–568), and 579 (95% CI 441–717), respectively. Detailed numbers for cranial, spinal, adult, and pediatric subgroups are presented in the article. There was an annual decrease of about 33 cases in total caseload between 1976 and 2019 (coeff. − 33, 95% CI − 62 to − 4, p = 0.025). Variables associated with lesser total caseload during residency were training abroad (1210 vs. 1747, p = 0.083) and female sex by trend (947 vs. 1671, p = 0.111), whereas case numbers were comparable across the EANS countries (p = 0.443). Conclusion The final results of this survey largely confirm the previously reported numbers. They provide an opportunity for current trainees to compare their own case logs with. Again, we confirm a significant decline in surgical exposure during training between 1976 and 2019. In addition, the current analysis reveals that female sex and training abroad may be variables associated with lesser case numbers during residency.

Published
2020
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15. Intracranial dermoid cysts: variations of radiological and clinical features

Author

Orakcioglu, B., Halatsch, M.-E, Fortunati, M., Unterberg, A., Yonekawa, Y., Orakcioglu, B., Halatsch, M.-E, Fortunati, M., Unterberg, A., and Yonekawa, Y.

Abstract

Background: Intracranial dermoid cysts are uncommon, and their clinical features as well as surgical management differ from patient to patient. Dermoids are generally benign lesions, but may cause spontaneous complications such as meningitis and/or hydrocephalus due to rupture and epileptic seizures depending on their location. Little has been reported about characteristic imaging findings with resulting therapeutic considerations, and only a few reports exist about associated hydrocephalus. Imaging modalities have changed and can facilitate differential diagnosis and follow-up if applied correctly. In this paper, we attempt to contribute our clinical experience with the management of dermoid cysts. Patients and methods: The charts of five men and two women with intracranial dermoid cysts were retrospectively reviewed. The patients were treated between September 1993 and September 2006. Selected patients are presented in detail. Results: Tumour location, size and radiographic characteristics varied in each patient. Clinical presentations comprised focal neurological deficits as well as epileptic seizures, persistent headache, mental changes and psycho-organic syndromes. One patient underwent delayed ventriculo-peritoneal shunting after ruptured fatty particles caused obstructive hydrocephalus. Despite dermoid rupture into the subarachnoid space, three patients never developed hydrocephalus. Diffuse vascular supra-tentorial lesions were seen in one patient as a result of aseptic meningitis. Diffusion-weighted imaging (DWI) hyperintensity in dermoids is related to decrease of water proton diffusion and should be used for both the diagnosis and follow-up of this lesion. Conclusion: Although dermoid cysts are known to be benign entities per se, their rupture can cause a wide range of symptoms including aseptic meningitis and/or hydrocephalus. This may be due to intraventricular obstruction and/or paraventricular compression. While rupture does not necessarily bring abou

Published
2018

17. Can the therapeutic effects of temozolomide be potentiated by stimulating AMP-activated protein kinase with olanzepine and metformin?

Author

Kast, RE, Karpel-Massler, G, and Halatsch, M-E

Subjects
Brain Neoplasms, Apoptosis, AMP-Activated Protein Kinases, Metformin, Dacarbazine, Enzyme Activation, Benzodiazepines, Viewpoint, Olanzapine, Cell Line, Tumor, Temozolomide, Animals, Humans, Energy Metabolism, Glioblastoma, Antineoplastic Agents, Alkylating
Abstract

As current treatments for glioblastoma commonly fail to cure, the need for more effective therapeutic options is overwhelming. Here, we summarize experimental evidence in support of the suggestion that metformin and olanzepine have potential to enhance the cytotoxic effects of temozolomide, an alkylating chemotherapeutic agent commonly used to treat glioblastoma. Although the primary path leading to temozolomide-induced cell death is formation of O-6-methylguanine and apoptotic signalling triggered by O-6-methyl G:T mispairs, that apoptotic signalling goes through a step mediated by AMP-activated protein kinase (AMPK). Metformin or olanzapine have been shown independently to enhance AMPK activation. Metformin to treat diabetes and olanzapine to treat psychiatric disorders are well tolerated and have been used clinically for many years. Thus it should be feasible to increase AMPK activation and add to the pro-apoptotic effects of temozolomide, by adding metformin and olanzapine to the therapeutic regimen. Clinical assessment of the potential benefit of such combined therapy against glioblastoma is warranted.

Published
2011

18. Candidate genes for sensitivity and resistance of human glioblastoma multiforme cell lines to erlotinib

Author

Halatsch, M.-E., Löw, S., Mursch, K., Orakcioglu, B., Vougioukas, V., and Unterberg, A.

Subjects
ddc: 610, 610 Medical sciences, Medicine, neoplasms, respiratory tract diseases
Abstract

Objective: Erlotinib, an EGFR tyrosine kinase inhibitor, exerts widely variable antiproliferative effects on human GBM cell lines in vitro and in vivo. As those effects are independent of EGFR baseline expression levels, more complex genetic properties may form the molecular basis of the erlotinib-sensitive[for full text, please go to the a.m. URL], 60. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit den Benelux-Ländern und Bulgarien

Published
2009

20. Intracranial dermoid cysts: variations of radiological and clinical features

Author

Orakcioglu, B, Halatsch, M E, Fortunati, M, Unterberg, A, Yonekawa, Y, Orakcioglu, B, Halatsch, M E, Fortunati, M, Unterberg, A, and Yonekawa, Y

Abstract

BACKGROUND: Intracranial dermoid cysts are uncommon, and their clinical features as well as surgical management differ from patient to patient. Dermoids are generally benign lesions, but may cause spontaneous complications such as meningitis and/or hydrocephalus due to rupture and epileptic seizures depending on their location. Little has been reported about characteristic imaging findings with resulting therapeutic considerations, and only a few reports exist about associated hydrocephalus. Imaging modalities have changed and can facilitate differential diagnosis and follow-up if applied correctly. In this paper, we attempt to contribute our clinical experience with the management of dermoid cysts. PATIENTS AND METHODS: The charts of five men and two women with intracranial dermoid cysts were retrospectively reviewed. The patients were treated between September 1993 and September 2006. Selected patients are presented in detail. RESULTS: Tumour location, size and radiographic characteristics varied in each patient. Clinical presentations comprised focal neurological deficits as well as epileptic seizures, persistent headache, mental changes and psycho-organic syndromes. One patient underwent delayed ventriculo-peritoneal shunting after ruptured fatty particles caused obstructive hydrocephalus. Despite dermoid rupture into the subarachnoid space, three patients never developed hydrocephalus. Diffuse vascular supra-tentorial lesions were seen in one patient as a result of aseptic meningitis. Diffusion-weighted imaging (DWI) hyperintensity in dermoids is related to decrease of water proton diffusion and should be used for both the diagnosis and follow-up of this lesion. CONCLUSION: Although dermoid cysts are known to be benign entities per se, their rupture can cause a wide range of symptoms including aseptic meningitis and/or hydrocephalus. This may be due to intraventricular obstruction and/or paraventricular compression. While rupture does not necessarily bring abou

Published
2008

22. EXPERIMENTAL THERAPEUTICS AND PHARMACOLOGY

Author

Aaberg-Jessen, C., primary, Fogh, L., additional, Halle, B., additional, Jensen, V., additional, Brunner, N., additional, Kristensen, B. W., additional, Abe, T., additional, Momii, Y., additional, Watanabe, J., additional, Morisaki, I., additional, Natsume, A., additional, Wakabayashi, T., additional, Fujiki, M., additional, Aldaz, B., additional, Fabius, A. W. M., additional, Silber, J., additional, Harinath, G., additional, Chan, T. A., additional, Huse, J. T., additional, Anai, S., additional, Hide, T., additional, Nakamura, H., additional, Makino, K., additional, Yano, S., additional, Kuratsu, J.-i., additional, Balyasnikova, I. V., additional, Prasol, M. S., additional, Kanoija, D. K., additional, Aboody, K. S., additional, Lesniak, M. S., additional, Barone, T., additional, Burkhart, C., additional, Purmal, A., additional, Gudkov, A., additional, Gurova, K., additional, Plunkett, R., additional, Barton, K., additional, Misuraca, K., additional, Cordero, F., additional, Dobrikova, E., additional, Min, H., additional, Gromeier, M., additional, Kirsch, D., additional, Becher, O., additional, Pont, L. B., additional, Kloezeman, J., additional, van den Bent, M., additional, Kanaar, R., additional, Kremer, A., additional, Swagemakers, S., additional, French, P., additional, Dirven, C., additional, Lamfers, M., additional, Leenstra, S., additional, Balvers, R., additional, Kleijn, A., additional, Lawler, S., additional, Gong, X., additional, Andres, A., additional, Hanson, J., additional, Delashaw, J., additional, Bota, D., additional, Chen, C.-C., additional, Yao, N.-W., additional, Chuang, W.-J., additional, Chang, C., additional, Chen, P.-Y., additional, Huang, C.-Y., additional, Wei, K.-C., additional, Cheng, Y., additional, Dai, Q., additional, Morshed, R., additional, Han, Y., additional, Auffinger, B., additional, Wainwright, D., additional, Zhang, L., additional, Tobias, A., additional, Rincon, E., additional, Thaci, B., additional, Ahmed, A., additional, He, C., additional, Lesniak, M., additional, Choi, Y. A., additional, Pandya, H., additional, Gibo, D. M., additional, Fokt, I., additional, Priebe, W., additional, Debinski, W., additional, Chornenkyy, Y., additional, Agnihotri, S., additional, Buczkowicz, P., additional, Rakopoulos, P., additional, Morrison, A., additional, Barszczyk, M., additional, Hawkins, C., additional, Chung, S., additional, Decollogne, S., additional, Luk, P., additional, Shen, H., additional, Ha, W., additional, Day, B., additional, Stringer, B., additional, Hogg, P., additional, Dilda, P., additional, McDonald, K., additional, Moore, S., additional, Hayden-Gephart, M., additional, Bergen, J., additional, Su, Y., additional, Rayburn, H., additional, Edwards, M., additional, Scott, M., additional, Cochran, J., additional, Das, A., additional, Varma, A. K., additional, Wallace, G. C., additional, Dixon-Mah, Y. N., additional, Vandergrift, W. A., additional, Giglio, P., additional, Ray, S. K., additional, Patel, S. J., additional, Banik, N. L., additional, Dasgupta, T., additional, Olow, A., additional, Yang, X., additional, Mueller, S., additional, Prados, M., additional, James, C. D., additional, Haas-Kogan, D., additional, Dave, N. D., additional, Desai, P. B., additional, Gudelsky, G. A., additional, Chow, L. M. L., additional, LaSance, K., additional, Qi, X., additional, Driscoll, J., additional, Ebsworth, K., additional, Walters, M. J., additional, Ertl, L. S., additional, Wang, Y., additional, Berahovic, R. D., additional, McMahon, J., additional, Powers, J. P., additional, Jaen, J. C., additional, Schall, T. J., additional, Eroglu, Z., additional, Portnow, J., additional, Sacramento, A., additional, Garcia, E., additional, Raubitschek, A., additional, Synold, T., additional, Esaki, S., additional, Rabkin, S., additional, Martuza, R., additional, Wakimoto, H., additional, Ferluga, S., additional, Tome, C. L., additional, Forde, H. E., additional, Netland, I. A., additional, Sleire, L., additional, Skeie, B., additional, Enger, P. O., additional, Goplen, D., additional, Giladi, M., additional, Tichon, A., additional, Schneiderman, R., additional, Porat, Y., additional, Munster, M., additional, Dishon, M., additional, Weinberg, U., additional, Kirson, E., additional, Wasserman, Y., additional, Palti, Y., additional, Gramatzki, D., additional, Staudinger, M., additional, Frei, K., additional, Peipp, M., additional, Weller, M., additional, Grasso, C., additional, Liu, L., additional, Berlow, N., additional, Davis, L., additional, Fouladi, M., additional, Gajjar, A., additional, Huang, E., additional, Hulleman, E., additional, Hutt, M., additional, Keller, C., additional, Li, X.-N., additional, Meltzer, P., additional, Quezado, M., additional, Quist, M., additional, Raabe, E., additional, Spellman, P., additional, Truffaux, N., additional, van Vurden, D., additional, Wang, N., additional, Warren, K., additional, Pal, R., additional, Grill, J., additional, Monje, M., additional, Green, A. L., additional, Ramkissoon, S., additional, McCauley, D., additional, Jones, K., additional, Perry, J. A., additional, Ramkissoon, L., additional, Maire, C., additional, Shacham, S., additional, Ligon, K. L., additional, Kung, A. L., additional, Zielinska-Chomej, K., additional, Grozman, V., additional, Tu, J., additional, Viktorsson, K., additional, Lewensohn, R., additional, Gupta, S., additional, Mladek, A., additional, Bakken, K., additional, Carlson, B., additional, Boakye-Agyeman, F., additional, Kizilbash, S., additional, Schroeder, M., additional, Reid, J., additional, Sarkaria, J., additional, Hadaczek, P., additional, Ozawa, T., additional, Soroceanu, L., additional, Yoshida, Y., additional, Matlaf, L., additional, Singer, E., additional, Fiallos, E., additional, Cobbs, C. S., additional, Hashizume, R., additional, Tom, M., additional, Ihara, Y., additional, Santos, R., additional, Torre, J. D. L., additional, Lepe, E., additional, Waldman, T., additional, James, D., additional, Huang, X., additional, Yu-Jen, L., additional, Gupta, N., additional, Solomon, D., additional, Zhang, Z., additional, Hayashi, T., additional, Adachi, K., additional, Nagahisa, S., additional, Hasegawa, M., additional, Hirose, Y., additional, Gephart, M. H., additional, Su, Y. S., additional, Hingtgen, S., additional, Kasmieh, R., additional, Nesterenko, I., additional, Figueiredo, J.-L., additional, Dash, R., additional, Sarkar, D., additional, Fisher, P., additional, Shah, K., additional, Horne, E., additional, Diaz, P., additional, Stella, N., additional, Huang, C., additional, Yang, H., additional, Wei, K., additional, Huang, T., additional, Hlavaty, J., additional, Ostertag, D., additional, Espinoza, F. L., additional, Martin, B., additional, Petznek, H., additional, Rodriguez-Aguirre, M., additional, Ibanez, C., additional, Kasahara, N., additional, Gunzburg, W., additional, Gruber, H., additional, Pertschuk, D., additional, Jolly, D., additional, Robbins, J., additional, Hurwitz, B., additional, Yoo, J. Y., additional, Bolyard, C., additional, Yu, J.-G., additional, Wojton, J., additional, Zhang, J., additional, Bailey, Z., additional, Eaves, D., additional, Cripe, T., additional, Old, M., additional, Kaur, B., additional, Serwer, L., additional, Le Moan, N., additional, Ng, S., additional, Butowski, N., additional, Krtolica, A., additional, Cary, S. P. L., additional, Johns, T., additional, Greenall, S., additional, Donoghue, J., additional, Adams, T., additional, Karpel-Massler, G., additional, Westhoff, M.-A., additional, Kast, R. E., additional, Dwucet, A., additional, Wirtz, C. R., additional, Debatin, K.-M., additional, Halatsch, M.-E., additional, Merkur, N., additional, Kievit, F., additional, Stephen, Z., additional, Wang, K., additional, Kolstoe, D., additional, Ellenbogen, R., additional, Zhang, M., additional, Kitange, G., additional, Haefner, E., additional, Knubel, K., additional, Pernu, B. M., additional, Sufit, A., additional, Pierce, A. M., additional, Nelson, S. K., additional, Keating, A. K., additional, Jensen, S. S., additional, Lachowicz, J., additional, Demeule, M., additional, Regina, A., additional, Tripathy, S., additional, Curry, J.-C., additional, Nguyen, T., additional, Castaigne, J.-P., additional, Davis, T., additional, Davis, A., additional, Tanaka, K., additional, Keating, T., additional, Getz, J., additional, Kapp, G. T., additional, Romero, J. M., additional, Lee, S., additional, Ramisetti, S., additional, Slagle-Webb, B., additional, Sharma, A., additional, Connor, J., additional, Lee, W.-S., additional, Kluk, M., additional, Aster, J. C., additional, Ligon, K., additional, Sun, S., additional, Lee, D., additional, Ho, A. S. W., additional, Pu, J. K. S., additional, Zhang, Z.-q., additional, Lee, N. P., additional, Day, P. J. R., additional, Leung, G. K. K., additional, Liu, Z., additional, Liu, X., additional, Madhankumar, A. B., additional, Miller, P., additional, Webb, B., additional, Connor, J. R., additional, Yang, Q. X., additional, Lobo, M., additional, Green, S., additional, Schabel, M., additional, Gillespie, Y., additional, Woltjer, R., additional, Pike, M., additional, Lu, Y.-J., additional, Luchman, H. A., additional, Stechishin, O., additional, Nguyen, S., additional, Cairncross, J. G., additional, Weiss, S., additional, Lun, X., additional, Wells, J. C., additional, Hao, X., additional, Grinshtein, N., additional, Kaplan, D., additional, Luchman, A., additional, Senger, D., additional, Robbins, S., additional, Madhankumar, A., additional, Rizk, E., additional, Payne, R., additional, Park, A., additional, Pang, M., additional, Harbaugh, K., additional, Wilisch-Neumann, A., additional, Pachow, D., additional, Kirches, E., additional, Mawrin, C., additional, McDonell, S., additional, Liang, J., additional, Piao, Y., additional, Nguyen, N., additional, Yung, A., additional, Verhaak, R., additional, Sulman, E., additional, Stephan, C., additional, Lang, F., additional, de Groot, J., additional, Mizobuchi, Y., additional, Okazaki, T., additional, Kageji, T., additional, Kuwayama, K., additional, Kitazato, K. T., additional, Mure, H., additional, Hara, K., additional, Morigaki, R., additional, Matsuzaki, K., additional, Nakajima, K., additional, Nagahiro, S., additional, Kumala, S., additional, Heravi, M., additional, Devic, S., additional, Muanza, T., additional, Knubel, K. H., additional, Neuwelt, A., additional, Wu, Y. J., additional, Donson, A., additional, Vibhakar, R., additional, Venkatamaran, S., additional, Amani, V., additional, Neuwelt, E., additional, Rapkin, L., additional, Foreman, N., additional, Ibrahim, F., additional, New, P., additional, Cui, K., additional, Zhao, H., additional, Chow, D., additional, Stephen, W., additional, Nozue-Okada, K., additional, Nagane, M., additional, McDonald, K. L., additional, Ogawa, D., additional, Chiocca, E., additional, Godlewski, J., additional, Patel, A., additional, Pasupuleti, N., additional, Gorin, F., additional, Valenzuela, A., additional, Leon, L., additional, Carraway, K., additional, Ramachandran, C., additional, Nair, S., additional, Quirrin, K.-W., additional, Khatib, Z., additional, Escalon, E., additional, Melnick, S., additional, Phillips, A., additional, Boghaert, E., additional, Vaidya, K., additional, Ansell, P., additional, Shalinsky, D., additional, Zhang, Y., additional, Voorbach, M., additional, Mudd, S., additional, Holen, K., additional, Humerickhouse, R., additional, Reilly, E., additional, Parab, S., additional, Diago, O., additional, Ryken, T., additional, Agarwal, S., additional, Al-Keilani, M., additional, Alqudah, M., additional, Sibenaller, Z., additional, Assemolt, M., additional, Sai, K., additional, Li, W.-y., additional, Li, W.-p., additional, Chen, Z.-p., additional, Saito, R., additional, Sonoda, Y., additional, Kanamori, M., additional, Yamashita, Y., additional, Kumabe, T., additional, Tominaga, T., additional, Sarkar, G., additional, Curran, G., additional, Jenkins, R., additional, Scharnweber, R., additional, Kato, Y., additional, Lin, J., additional, Everson, R., additional, Soto, H., additional, Kruse, C., additional, Liau, L., additional, Prins, R., additional, Semenkow, S., additional, Chu, Q., additional, Eberhart, C., additional, Sengupta, R., additional, Marassa, J., additional, Piwnica-Worms, D., additional, Rubin, J., additional, Shai, R., additional, Pismenyuk, T., additional, Moshe, I., additional, Fisher, T., additional, Freedman, S., additional, Simon, A., additional, Amariglio, N., additional, Rechavi, G., additional, Toren, A., additional, Yalon, M., additional, Shimazu, Y., additional, Kurozumi, K., additional, Ichikawa, T., additional, Fujii, K., additional, Onishi, M., additional, Ishida, J., additional, Oka, T., additional, Watanabe, M., additional, Nasu, Y., additional, Kumon, H., additional, Date, I., additional, Sirianni, R. W., additional, McCall, R. L., additional, Spoor, J., additional, van der Kaaij, M., additional, Geurtjens, M., additional, Veiseh, O., additional, Fang, C., additional, Leung, M., additional, Strohbehn, G., additional, Atsina, K.-K., additional, Patel, T., additional, Piepmeier, J., additional, Zhou, J., additional, Saltzman, W. M., additional, Takahashi, M., additional, Valdes, G., additional, Inagaki, A., additional, Kamijima, S., additional, Hiraoka, K., additional, Micewicz, E., additional, McBride, W. H., additional, Iwamoto, K. S., additional, Gruber, H. E., additional, Robbins, J. M., additional, Jolly, D. J., additional, McCully, C., additional, Bacher, J., additional, Thomas, T., additional, Murphy, R., additional, Steffen-Smith, E., additional, McAllister, R., additional, Pastakia, D., additional, Widemann, B., additional, Chen, P., additional, Hua, M., additional, Liu, H., additional, Woolf, E. C., additional, Abdelwahab, M. G., additional, Fenton, K. E., additional, Liu, Q., additional, Turner, G., additional, Preul, M. C., additional, Scheck, A. C., additional, Shen, W., additional, Brown, D., additional, Pedersen, H., additional, Hariono, S., additional, Yao, T.-W., additional, Sidhu, A., additional, Weiss, W. A., additional, Nicolaides, T. P., additional, and Olusanya, T., additional

Published
2013
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36. Intracranial dermoid cysts: variations of radiological and clinical features

Author

Orakcioglu, B., Halatsch, M.-E, Fortunati, M., Unterberg, A., Yonekawa, Y., Orakcioglu, B., Halatsch, M.-E, Fortunati, M., Unterberg, A., and Yonekawa, Y.

Abstract

Background: Intracranial dermoid cysts are uncommon, and their clinical features as well as surgical management differ from patient to patient. Dermoids are generally benign lesions, but may cause spontaneous complications such as meningitis and/or hydrocephalus due to rupture and epileptic seizures depending on their location. Little has been reported about characteristic imaging findings with resulting therapeutic considerations, and only a few reports exist about associated hydrocephalus. Imaging modalities have changed and can facilitate differential diagnosis and follow-up if applied correctly. In this paper, we attempt to contribute our clinical experience with the management of dermoid cysts. Patients and methods: The charts of five men and two women with intracranial dermoid cysts were retrospectively reviewed. The patients were treated between September 1993 and September 2006. Selected patients are presented in detail. Results: Tumour location, size and radiographic characteristics varied in each patient. Clinical presentations comprised focal neurological deficits as well as epileptic seizures, persistent headache, mental changes and psycho-organic syndromes. One patient underwent delayed ventriculo-peritoneal shunting after ruptured fatty particles caused obstructive hydrocephalus. Despite dermoid rupture into the subarachnoid space, three patients never developed hydrocephalus. Diffuse vascular supra-tentorial lesions were seen in one patient as a result of aseptic meningitis. Diffusion-weighted imaging (DWI) hyperintensity in dermoids is related to decrease of water proton diffusion and should be used for both the diagnosis and follow-up of this lesion. Conclusion: Although dermoid cysts are known to be benign entities per se, their rupture can cause a wide range of symptoms including aseptic meningitis and/or hydrocephalus. This may be due to intraventricular obstruction and/or paraventricular compression. While rupture does not necessarily bring abou

39. [Utility of coronal oblique slices in cervical spine MRI: Improved detection of the neuroforamina].

Author

Freund W, Klessinger S, Mueller M, Halatsch ME, Hoepner G, Weber F, and Schmitz B

Subjects
Adult, Aged, Female, Humans, Male, Middle Aged, Observer Variation, Radiculopathy etiology, Reproducibility of Results, Retrospective Studies, Sensitivity and Specificity, Spinal Stenosis complications, Cervical Vertebrae pathology, Image Enhancement methods, Patient Positioning methods, Radiculopathy pathology, Spinal Nerve Roots pathology, Spinal Stenosis pathology
Abstract

Background and Objectives: Angulated projections are standard in conventional radiography of the cervical spine, but rarely used in magnetic resonance imaging (MRI). As neuroforaminal pathology plays an important role in the etiology of radicular syndromes and may influence an operative approach, the utility of coronal oblique slices in MRI is explored., Materials and Methods: In a retrospective setting, 25 consecutive patients with neurologically diagnosed cervical monoradiculopathy were identified. T2-weighted sagittal, coronal oblique, and transversal slice orientations were anonymized. Two radiologists and two neurosurgeons independently assessed the cases. Criteria were site, cause, and grading of the neuroforaminal stenosis and the level of confidence on a 100-point visual analog scale (VAS). We computed interrater agreement, sensitivity, and t tests., Results: Using only one slice orientation, the sensitivity in detecting the relevant neuroforamen was 0.40 for transversal, 0.68 for sagittal, and 0.64 for coronal oblique scans. A combination of the different angulations increased sensitivity and in 4 cases only the coronal oblique scans proved diagnostic. The readers felt significantly more confident in attributing the cause of the pathology on coronal oblique planes (a mean of 72 VAS points, p = 0.0003 vs 58 (sagittal) vs 64 (transversal)). Interrater agreement was significantly better for experienced (kappa 0. 48) than for inexperienced readers (0.32, p = 0.02)., Conclusions: Adding coronal oblique planes in cervical spine MRI increases sensitivity and confidence in attributing the cause of neuroforaminal pathology. They are regarded as useful by all the readers.

Published
2015
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40. Vertebroplasty combined with image-guided percutaneous cement augmented transpedicular fixation for the treatment of complex vertebral fractures in osteoporotic patients.

Author

Vougioukas V, Hubbe U, Kogias E, Psarras N, and Halatsch ME

Subjects
Aged, Aged, 80 and over, Blood Loss, Surgical, Feasibility Studies, Follow-Up Studies, Fracture Fixation, Internal instrumentation, Fracture Fixation, Internal methods, Humans, Kyphosis diagnostic imaging, Kyphosis surgery, Lumbar Vertebrae diagnostic imaging, Lumbar Vertebrae surgery, Middle Aged, Osteoporotic Fractures diagnostic imaging, Radiography, Retrospective Studies, Spinal Fractures diagnostic imaging, Thoracic Vertebrae diagnostic imaging, Thoracic Vertebrae surgery, Time Factors, Treatment Outcome, Vertebroplasty instrumentation, Bone Cements, Bone Screws, Lumbar Vertebrae injuries, Osteoporotic Fractures surgery, Spinal Fractures surgery, Thoracic Vertebrae injuries, Vertebroplasty methods
Abstract

Aim: Surgical management of osteoporotic fractures constitutes a clinical challenge. The aim of this study was to evaluate feasibility and efficacy of navigated percutaneous screw fixation combined with multisegmental vertebroplasty for the treatment of osteoporotic fractures not suitable for monosegmental cement augmentation in patients with severe osteoporotic changes of the vertebral column and/or progressive kyphotic deformation., Methods: Navigated percutaneous screw fixation and simultaneous augmentation with vertebroplasty was performed in 6 patients with lumbar and 4 patients with thoracic osteoporotic fractures. In all cases, significant vertebral body collapse, destruction of the endplates and multisegmental osteoporotic changes were radiologically confirmed. Postoperative images were obtained in all cases to analyze the position of each screw and to assess further deformity progression. Follow-up ranged between 12 and 18 months., Results: There was no additional morbidity associated with screw or cement insertion. Cement leakage lateral to the vertebral body was observed in 4 cases. Mean total operation time (142 minutes) was prolonged due to intraoperative data acquisition for 15±6 minutes. In 2 cases a second data set had to be acquired due to poor image quality. Finally, mean intraoperative blood loss was 100ml. Clinical outcome was satisfactory in all cases. Radiological follow-up demonstrated loss of initial kyphosis correction in 8 cases., Conclusion: Navigated percutaneous screw fixation combined with multisegmental vertebroplasty is a technically feasible procedure. Despite the additional time needed for intraoperative data acquisition, total operation time was acceptable and intraoperative blood loss as well as muscle trauma were minimized compared to a standard open procedure. Despite good clinical outcome, the described construct failed to prevent further kyphotic deformation during the reported follow-up period.

Published
2010

41. [Occipital giant encephalocele].

Author

Lettau M, Halatsch ME, and Hähnel S

Subjects
Age Factors, Angiography, Female, Humans, Infant, Magnetic Resonance Angiography, Magnetic Resonance Imaging, Occipital Bone, Pregnancy, Prognosis, Tomography, X-Ray Computed, Ultrasonography, Prenatal, Cerebellum abnormalities, Encephalocele diagnosis, Encephalocele diagnostic imaging, Encephalocele surgery
Published
2007
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42. Minimally invasive approach for the treatment of lateral lumbar disc herniations. Technique and results.

Author

Kogias E, Vougioukas VI, Hubbe U, and Halatsch ME

Subjects
Humans, Intervertebral Disc Displacement physiopathology, Leg, Middle Aged, Pain physiopathology, Pain Measurement, Postoperative Period, Reoperation, Retrospective Studies, Treatment Outcome, Diskectomy methods, Intervertebral Disc Displacement surgery, Lumbar Vertebrae surgery, Minimally Invasive Surgical Procedures methods
Abstract

Objective: This paper aims to demonstrate the feasibility and efficacy of a minimal invasive approach by using a muscle dilator system for the treatment of lateral lumbar disc herniations., Methods: A retrospective analysis of 38 cases with lateral lumbar disc herniations that were treated the METRx-System was performed. Patients were assessed preoperatively and postoperatively with the visual analogue scale (VAS) for leg pain. Follow up ranged from 6 to 24 months., Results: No intraoperative complications were observed. Operation time and intraoperative blood loss were minimized. In 37 cases VAS scores were significantly lower after the procedure. A single patient had to be reoperated due to insufficient removal of the herniated disc material., Conclusion: The reported minimal invasive technique is a safe and efficient alternative to conventional methods for the treatment of lateral lumbar disc herniations.

Published
2007
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43. Overexpression of deletion-mutant epidermal growth factor receptor is associated with altered genotoxic stress-provoked p53 mRNA induction in a human glioblastoma cell line.

Author

Halatsch ME, Schmidt U, Bötefür IC, Holland JF, and Ohnuma T

Subjects
ErbB Receptors biosynthesis, Gene Expression Regulation, Neoplastic radiation effects, Glioblastoma metabolism, Humans, Neoplasm Proteins biosynthesis, Neoplasm Proteins genetics, Proto-Oncogene Proteins biosynthesis, Proto-Oncogene Proteins genetics, Proto-Oncogene Proteins c-mdm2, RNA, Messenger biosynthesis, RNA, Messenger radiation effects, Reverse Transcriptase Polymerase Chain Reaction, Transcriptional Activation radiation effects, Tumor Cells, Cultured, Tumor Suppressor Protein p53 biosynthesis, ErbB Receptors genetics, Glioblastoma genetics, Nuclear Proteins, Sequence Deletion, Tumor Suppressor Protein p53 genetics, Ultraviolet Rays
Abstract

A distinct 801-bp deletion mutation of the epidermal growth factor receptor (EGFR) gene is frequently present in primary glioblastoma multiforme (GBM), confers enhanced tumorigenicity in vivo and is prognostic of a shorter interval to clinical relapse. This study sought to investigate whether overexpression of deletion-mutant (delta) EGFR affects genotoxic stress-provoked mRNA inductions of p53 and murine double minute 2 (MDM2), two other genes strongly involved in the pathogenesis of GBM. In a set of human wild-type (wt) p53 GBM cell lines (U-87MG and U-87MG.delta EGFR) that exclusively differ in EGFR expression (endogenous wt EGFR expression and exogenous delta EGFR overexpression, respectively), ultraviolet (UV) light irradiation-mediated EGFR, p53 and MDM2 genotoxic stress-provoked mRNA inductions were assessed by semiquantitative reverse transcription-polymerase chain reaction (RT-PCR) and densitometry of electrophoretically separated and stained RT-PCR products. Although baseline (at 0 J/m2) p53 mRNA expression in U-87MG.delta EGFR was 42-fold reduced, maximum p53 induction (at 8 J/m2) amounted to 130% compared to U-87MG. Thus, ultimate UV light-mediated p53 mRNA induction was 131.5-fold in U-87MG.delta EGFR and 2.8-fold in U-87MG. In contrast, neither wt/delta EGFR nor MDM2 mRNA expressions were significantly inducible, and MDM2 mRNA profiles were essentially the same among U-87MG and U-87MG.delta EGFR. These data suggest that in human GBM overexpression of delta EGFR is associated with differential genotoxic stress-provoked p53 mRNA induction whereas MDM2 mRNA expression is apparently not directly affected by EGFR status.

Published
2001

44. Marked inhibition of glioblastoma target cell tumorigenicity in vitro by retrovirus-mediated transfer of a hairpin ribozyme against deletion-mutant epidermal growth factor receptor messenger RNA.

Author

Halatsch ME, Schmidt U, Bötefür IC, Holland JF, and Ohnuma T

Subjects
Base Sequence, Brain Neoplasms therapy, Chromosome Deletion, DNA Mutational Analysis, Glioblastoma therapy, Humans, In Vitro Techniques, Molecular Sequence Data, Moloney murine leukemia virus genetics, Polymerase Chain Reaction, RNA, Catalytic genetics, Tumor Cells, Cultured, Brain Neoplasms genetics, Cell Transformation, Neoplastic genetics, ErbB Receptors genetics, Genetic Therapy methods, Genetic Vectors genetics, Glioblastoma genetics, RNA, Messenger genetics, Tumor Stem Cell Assay
Abstract

Object: The goal of this study was to evaluate the activity of certain hairpin ribozymes against deletion-mutant epidermal growth factor receptor (deltaEGFR) messenger (m)RNA in glioblastomas multiforme (GBMs). A distinct 801-bp deletion mutation associated with amplification of the EGFR gene is present in a large subgroup of primary GBMs and confers enhanced tumorigenicity in vivo. As a result of the deletion mutation, the fusion junction of the gene is created directly upstream of a GTA triplet, which is subsequently transcribed into a ribozyme target codon (GUA)., Methods: In attempts to intercept deltaEGFR gene expression at the mRNA level, the authors designed three different hairpin ribozymes derived from the negative strands of satellite RNAs in tobacco ringspot virus, chicory yellow mottle virus (sCYMV1), and arabis mosaic virus against this target and evaluated their efficiency and specificity in a cell-free system. The sCYMV1, identified as the most active anti-deltaEGFR hairpin ribozyme motif, was cloned into the retroviral plasmid N2A+tRNAi(met). High-titer recombinant retrovirus-containing supernatants (> 10(5) colony-forming units/ml) derived from an amphotropic GP+envAM 12 packaging cell line transfected with the N2A+tRNAi(met)-anti-deltaEGFR-sCYMV1 construct were used to introduce the sCYMV1 hairpin ribozyme into U-87MG.deltaEGFR glioblastoma cells, which overexpress exogenous deltaEGFR. Using a virus/target cell ratio of 40:1 in the absence of drug selection, the ribozyme transfer resulted in a greater than 90% reduction of deltaEGFR mRNA levels, a 69% inhibition of deltaEGFR-mediated proliferation advantage, and a greater than 95% decrease of colony formation in soft agar under relative serum starvation conditions in vitro; transfer of a control mutant ribozyme that was rendered incapable of cleaving its target yielded none of these effects., Conclusions: These findings indicate that the anti-deltaEGFR-sCYMV1 hairpin ribozyme is capable of specifically inhibiting the expression of deltaEGFR and reversing the deltaEGFR-associated malignant phenotype of GBM cells. This strategy may constitute a promising gene therapy approach for a molecularly defined subgroup of GBMs.

Published
2000
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45. Phenoprocoumon, head trauma and delayed intracerebral haemorrhage.

Author

Halatsch ME and Markakis E

Subjects
Anticoagulants administration & dosage, Humans, International Normalized Ratio, Intracranial Hemorrhage, Traumatic diagnosis, Male, Middle Aged, Myocardial Infarction drug therapy, Neurologic Examination drug effects, Phenprocoumon administration & dosage, Skull Fractures diagnosis, Temporal Bone injuries, Tomography, X-Ray Computed, Anticoagulants adverse effects, Head Injuries, Closed diagnosis, Intracranial Hemorrhage, Traumatic chemically induced, Phenprocoumon adverse effects
Abstract

Delayed traumatic intracerebral haemorrhage (DTICH) constitutes a serious complication of head injury, and several studies have set out to identify predisposing clinical variables and appropriate management strategies. Here we report a distinct and particularly malignant course of DTICH associated with oral anticoagulant therapy.

Published
1999

46. Differential activation of the c-Ki-ras-2 proto-oncogene in human colorectal carcinoma.

Author

Halatsch ME, Hirsch-Ernst KI, Weinel RJ, and Kahl GF

Subjects
Codon, Colorectal Neoplasms metabolism, Colorectal Neoplasms pathology, DNA, Neoplasm analysis, Humans, Pancreatic Neoplasms genetics, Pancreatic Neoplasms metabolism, Pancreatic Neoplasms pathology, Polymerase Chain Reaction, Proto-Oncogene Mas, Tumor Cells, Cultured, Colorectal Neoplasms genetics, Gene Expression Regulation, Neoplastic, Genes, ras, Point Mutation, Proto-Oncogene Proteins p21(ras) biosynthesis
Abstract

In colorectal carcinoma, c-Ki-ras-2 mutations predominantly occur in codon 12 and, to a considerably lesser extent, in codon 13. To our knowledge, involvement of codon 61 in c-Ki-ras-2 has been reported only once among the large number of colon cancers investigated altogether. In this study, five human primary colorectal carcinomas were analyzed for the presence of activating c-Ki-ras-2 point mutations in codon 12, 13, and 61. Tumor DNAs were amplified by PCR and subsequently hybridized to a panel of synthetic oligonucleotides representing the complete spectrum of possible mutations. In two of the five tumors, mutations involving codons 13 and 61, respectively, were detected. These data extend previous findings that point mutation of codon 61 may be an improbable yet possible event leading to activation of c-Ki-ras-2 in colorectal carcinoma.

Published
1998

47. Frequent loss of expression of the potential tumor suppressor gene DCC in ductal pancreatic adenocarcinoma.

Author

Höhne MW, Halatsch ME, Kahl GF, and Weinel RJ

Subjects
Humans, Nucleic Acid Amplification Techniques, Carcinoma, Intraductal, Noninfiltrating genetics, Chromosome Deletion, Chromosomes, Human, Pair 18, Gene Expression Regulation, Neoplastic genetics, Genes, Tumor Suppressor genetics, Genes, ras genetics, Pancreatic Neoplasms genetics
Abstract

The development of colon carcinomas is associated with allelic deletions on chromosomes 5q, 17p, and 18q. The DCC gene located on chromosome 18q21.3 codes for a potential tumor suppressor gene related to cellular adhesion receptors. We investigated the expression of this gene in several pancreatic carcinoma cell lines and in patients with ductal adenocarcinomas of the pancreas. In 8 of 11 cell lines and in 4 of 8 primary tumors a complete extinction of DCC gene expression was observed, whereas the c-Ki-ras gene was mutated at codon 12 in 7 of 8 tumors. A highly reduced or absent expression of DCC was found in all low or undifferentiated pancreatic tumor cell lines, whereas in the more differentiated ones DCC expression was conserved. These data suggest that loss of DCC gene expression is an important factor in the development or progress of pancreatic adenocarcinoma and may be linked to the differentiated phenotype of the pancreatic tumor cell.

Published
1992

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