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Vaneckova M, Klempir J, Pelclova D, Bezdicek O, Liskova I, Brozova H, Polakova K, Diblik P, Miovsky M, Hubacek J, Hlusicka J, Kotikova K, Ruzicka E, Seidl Z, Marechal B, Kober T, Zacharov S. The spectrum of brain MRI findings of methanol intoxication after the methanol affair in the Czech Republic. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1525] [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: 11/30/2022]
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Bezdicek O, Michalec J, Vaneckova M, Klempir J, Liskova I, Seidl Z, Janikova B, Miovsky M, Hubacek J, Diblik P, Kuthan P, Pilin A, Kurcova I, Fenclova Z, Petrik V, Navratil T, Pelclova D, Zakharov S, Ruzicka E. Cognitive sequelae of methanol poisoning involve executive dysfunction and memory impairment in cross-sectional and long-term perspective. Alcohol 2017; 59:27-35. [PMID: 28262185 DOI: 10.1016/j.alcohol.2016.12.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 11/25/2016] [Accepted: 12/09/2016] [Indexed: 11/24/2022]
Abstract
Methanol poisoning leads to lesions in the basal ganglia and subcortical white matter, as well as to demyelination and atrophy of the optic nerve. However, information regarding cognitive deficits in a large methanol sample is lacking. The principal aim of the present study was to identify the cognitive sequelae of methanol poisoning and their morphological correlates. A sample of 50 patients (METH; age 48 ± 13 years), 3-8 months after methanol poisoning, and 57 control subjects (CS; age 49 ± 13 years) were administered a neuropsychological battery. Forty-six patients were followed in 2 years' perspective. Patients additionally underwent 1.5T magnetic resonance imaging (MRI). Three biochemical and toxicological metabolic markers and a questionnaire regarding alcohol abuse facilitated the classification of 24 patients with methanol poisoning without alcohol abuse (METHna) and 22 patients with methanol poisoning and alcohol abuse (METHa). All groups were compared to a control group of similar size, and matched for age, education, premorbid intelligence level, global cognitive performance, and level of depressive symptoms. Using hierarchical multiple regression we found significant differences between METH and CS, especially in executive and memory domains. METHa showed a similar pattern of cognitive impairment with generally more severe executive dysfunction. Moreover, all METH patients with extensive involvement on brain MRI (lesions in ≥2 anatomical regions) had a more severe cognitive impairment. From a longitudinal perspective, we did not find any changes in their cognitive functioning after 2 years' follow-up. Our findings suggest that methanol poisoning is associated with executive dysfunction and explicit memory impairment, supposedly due to basal ganglia dysfunction and disruption of frontostriatal circuitry proportional to the number of brain lesions, and that these changes are persistent after 2 years' follow-up.
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Macakova M, Bohuslavova B, Vochozkova P, Pavlok A, Sedlackova M, Vidinska D, Vochyanova K, Liskova I, Valekova I, Baxa M, Ellederova Z, Klima J, Juhas S, Juhasova J, Klouckova J, Haluzik M, Klempir J, Hansikova H, Spacilova J, Collins R, Blumenthal I, Talkowski M, Gusella JF, Howland DS, DiFiglia M, Motlik J. Mutated Huntingtin Causes Testicular Pathology in Transgenic Minipig Boars. NEURODEGENER DIS 2016; 16:245-59. [PMID: 26959244 DOI: 10.1159/000443665] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 12/23/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Huntington's disease is induced by CAG expansion in a single gene coding the huntingtin protein. The mutated huntingtin (mtHtt) primarily causes degeneration of neurons in the brain, but it also affects peripheral tissues, including testes. OBJECTIVE We studied sperm and testes of transgenic boars expressing the N-terminal region of human mtHtt. METHODS In this study, measures of reproductive parameters and electron microscopy (EM) images of spermatozoa and testes of transgenic (TgHD) and wild-type (WT) boars of F1 (24-48 months old) and F2 (12-36 months old) generations were compared. In addition, immunofluorescence, immunohistochemistry, Western blot, hormonal analysis and whole-genome sequencing were done in order to elucidate the effects of mtHtt. RESULTS Evidence for fertility failure of both TgHD generations was observed at the age of 13 months. Reproductive parameters declined and progressively worsened with age. EM revealed numerous pathological features in sperm tails and in testicular epithelium from 24- and 36-month-old TgHD boars. Moreover, immunohistochemistry confirmed significantly lower proliferation activity of spermatogonia in transgenic testes. mtHtt was highly expressed in spermatozoa and testes of TgHD boars and localized in all cells of seminiferous tubules. Levels of fertility-related hormones did not differ in TgHD and WT siblings. Genome analysis confirmed that insertion of the lentiviral construct did not interrupt any coding sequence in the pig genome. CONCLUSIONS The sperm and testicular degeneration of TgHD boars is caused by gain-of-function of the highly expressed mtHtt.
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Affiliation(s)
- Monika Macakova
- Laboratory of Cell Regeneration and Plasticity, Institute of Animal Physiology and Genetics, Czech Academy of Science, Libechov, Czech Republic
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Vaneckova M, Zakharov S, Klempir J, Ruzicka E, Bezdicek O, Brozova H, Diblik P, Miovsky M, Hubacek JA, Urban P, Ridzon P, Pelclova D, Burgetova A, Masek M, Kotikova K, Peterova K, Liskova I, Hamplova L, Seidl Z. Imaging findings after methanol intoxication (cohort of 46 patients). Neuro Endocrinol Lett 2015; 36:737-744. [PMID: 26921573] [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] [Received: 10/28/2015] [Accepted: 11/18/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVES Our goal is to demonstrate the variability of imaging findings, primarily in the MRI, in 46 patients who survived acute methanol poisoning. This cohort of patients is the largest such sample group examined by MRI. METHODS Patients were examined by means of imaging methods (42 patients by MRI and 4 by CT). All had an identical protocol of MR examination (T2WI, FLAIR, T1WI with or without application of contrast medium and T2WI/FFE, DWI in the transversal plane of the scan, and with focus on the optic nerves in the coronal plane of the scan in T2WI-SPIR). RESULTS Imaging methods revealed a positive finding associated with methanol intoxication in 21 patients (46%). These consisted of symmetrical lesions in the putamen--13 patients (28%), haemorrhage--13 cases (28%), deposits in white matter with localization primarily subcortically--4 cases (9%), lesions in the region of the globus pallidus--7 cases (15%) (in 6 cases without combination with the lesions in the putamen), lesions in the brainstem afflicted 6 patients (13%), and lesion in the cerebellum was found in one case. A pathological finding was found only in the patients examined by MRI. CONCLUSION Almost half of the patients who survived acute methanol poisoning had pathological findings by MRI. The most common finding concerned an affliction of the putamen, which is a predilection area. An interesting finding was the relatively frequent occurrence of selective lesion of the globus pallidus, which is more usually associated with other types of intoxication.
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Affiliation(s)
- Manuela Vaneckova
- MR Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Sergey Zakharov
- Department of Occupational Medicine of the First Faculty of Medicine and General University Hospital, Charles University Prague, Czech Republic
| | - Jiri Klempir
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | - Evzen Ruzicka
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | - Ondrej Bezdicek
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | - Hana Brozova
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | - Pavel Diblik
- Department of Ophthalmology, Charles University in Prague, First Faculty of Medicine and General University Hospital, Czech Republic
| | - Michal Miovsky
- Department of Addictology, Charles University in Prague, First Faculty of Medicine and General University Hospital, Czech Republic
| | - Jaroslav Alois Hubacek
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Pavel Urban
- Department of Occupational Medicine of the First Faculty of Medicine and General University Hospital, Charles University Prague, Czech Republic
| | - Petr Ridzon
- Department of Occupational Medicine of the First Faculty of Medicine and General University Hospital, Charles University Prague, Czech Republic
| | - Daniela Pelclova
- Department of Occupational Medicine of the First Faculty of Medicine and General University Hospital, Charles University Prague, Czech Republic
| | - Andrea Burgetova
- MR Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Martin Masek
- MR Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Katerina Kotikova
- Department of Occupational Medicine of the First Faculty of Medicine and General University Hospital, Charles University Prague, Czech Republic
| | - Kamila Peterova
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | - Irena Liskova
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | | | - Zdenek Seidl
- MR Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
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