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Hamad M, Farhat N, Shafarin J, Mohammad J. P040 Estrogen-induced epigenetic regulation of matrisome-related genes in breast cancer. Breast 2023. [DOI: 10.1016/s0960-9776(23)00159-5] [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: 03/18/2023] Open
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2
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Hamza F, Hamza R, Farhat N, Maaloul M, Hachicha H, Masmoudi H, Mhiri C, Guermazi F. Correction non uniforme de l’atténuation dans la TEMP/TDM de perfusion cérébrale et corrélation avec les données cliniques et les dosages des biomarqueurs du LCR. Médecine Nucléaire 2023. [DOI: 10.1016/j.mednuc.2023.01.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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3
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Farhat N, Heying R, Rüffer A, Vazquez-Jimenez J, Beghetti M, Seghaye M. Influence of hemodynamic overload with or without pressure overload on myocardial remodeling in children with congenital cardiac defect: Implication of exosomes and intracellular fibrosis activation pathways. Archives of Cardiovascular Diseases Supplements 2022. [DOI: 10.1016/j.acvdsp.2022.07.023] [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: 10/14/2022]
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Ben Abdallah M, Baati I, Guermazi A, Guermazi F, Hentati S, Farhat N, Masmoudi J. Fatigue in multiple sclerosis and its relation with depression. Eur Psychiatry 2022. [PMCID: PMC9567434 DOI: 10.1192/j.eurpsy.2022.1170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Fatigue is one of the most common and disabling symptoms of multiple sclerosis (MS). It can be defined as a subjective lack of physical and mental energy. Objectives To study the prevalence of fatigue in patients with MS and to determine the factors related to it, including depression. Methods This was a cross-sectional, descriptive and analytical study, which took place in the neurology department in Sfax (Tunisia). It focused on patients with MS in remission phase. We used the Expanded Disability Status Scale (EDSS) to determine the degree of disability caused by MS, the Chalder Fatigue Scale to evaluate the fatigue, and the Hospital Anxiety and Depression Scale (HADS) to assess depressive symptoms. Results The 93 patients included in the study had a mean age of 36.59 ± 10.69 years. The socio-economic level was low to medium in 52.7% of cases. The EDSS score ranged from 0 to 8 (median = 3.5). The total number of relapses ranged from 1 to 30 (median = 3.5). MS patients had fatigue in 72.4% of cases and depression in 26.9% of cases. Patients with a low to medium socio-economic level were more fatigued (p=0.027). High number of MS relapses, severity of disability on the EDSS, and presence of depression were associated with fatigue (p=0.014, p<10-3 and p=0.001, respectively). Conclusions In MS patients, fatigue is a common symptom. Patients with reduced physical activity and greater MS-related disability have more severe fatigue, which negatively affects psychosocial functioning, increasing the risk of depression. Disclosure No significant relationships.
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Ben Abdallah M, Baati I, Zouari A, Guermazi F, Hentati S, Farhat N, Masmoudi J. Alexithymia In Multiple Sclerosis: Relationship With Depression. Eur Psychiatry 2022. [PMCID: PMC9564250 DOI: 10.1192/j.eurpsy.2022.1160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Introduction Alexithymia, the lack of words to express emotions, is a common problem in multiple sclerosis (MS) patients. Objectives To investigate the prevalence of alexithymia in patients with MS and to evaluate the factors related to it, including depression. Methods We conducted a cross-sectional, descriptive and analytical study, which took place in the neurology department in Sfax (Tunisia). It involved MS outpatients in remission phase. Data collection was done using a form exploring sociodemographic, clinical and radiological characteristics. We used the Expanded Disability Status Scale (EDSS) to evaluate neurological impairments, the Toronto Alexithymia Scale (TAS-20) to assess alexithymia, and the Hospital Anxiety and Depression Scale (HADS) to assess depressive symptoms. Results Our study included 93 patients. They were married in 57% of cases. The total number of relapses ranged from 1 to 30, with a median of 5. The EDSS score ranged from 0 to 8. A temporal lesion on brain imaging was found in 29% of cases. MS patients had alexithymia in 58.1% of cases and depression in 26.9% of cases. Alexithymia was more frequent in unmarried patients (p = 0.028). Among clinical and radiological factors, the number of relapses was higher (p = 0.035), and temporal lesion was more frequent in alexithymic patients (p = 0.045). In this study, alexithymic patients were more depressed (p < 10-3). Conclusions According to our results, depression and alexithymia were found to be significantly inter-related in MS. Future longitudinal studies might better clarify the nature of this relationship in MS patients. Disclosure No significant relationships.
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Safa K, Farhat N, Salma S, Nadia B, Mariem B, Chokri M. Quality of sleep in Tunisian patients with Multiple Sclerosis during the COVID-19 pandemic. Eur Psychiatry 2022. [PMCID: PMC9565436 DOI: 10.1192/j.eurpsy.2022.1369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction COVID-19 pandemic has affected human communities around the world, and there is fear that people with chronic diseases such as Multiple sclerosis(MS) are more vulnerable to negative psychological effects. Objectives The aim of the present study was to assess the quality of sleep in patients with (MS) in comparison with healthy controls(HCs), during the COVID-19 pandemic and to identify its associated factors. Methods This was a cross-sectional survey study conducted with patients followed at the neurology department of Hbib bourguiba university hospital in sfax(Tunisia), during the month of november2020. Sleep quality was evaluated using the Pittsburgh Sleep Quality Index(PSQI). The PSQI is a questionnaire assessing participants’ sleep quality, sleep duration, and sleep disturbances and their severity during the past month.Participants with a PSQI ≤5 are classified as ‘good sleepers’. Results Fifty two patients were included in the study. The mean age was 33.69 years(SD=9.21 years)and the sex ratio(F/H)was 4.77. Overall, our patients had higher scores of(PSQI)compared to HC and these différences were statistically significant(p < 0.05). The mean score of(PSQI)was 11.04(SD=3.003)and 11.53%were classified as ‘good sleepers’. Unemployment was related to a poor sleep quality(p=0.0001). Patients with high EDSS(r=0.7;p=0.0001), high number of relapses(r=0.58 ;p=0.0001)were more likely to have sleep disturbance. There was a positive correlation between a poor sleep quality and the duration of disease(r=0.38;p=0.005). Conclusions We identified that during the COVID-19pandemic patients with(MS)had a worse sleep quality. The COVID-19pandemic poses a challenge to psychological resilience. More studies are warranted to better understand the long-term consequences of the pandemic on mental health of vulnerable people. Disclosure No significant relationships.
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Ben Abdallah M, Baati I, Tabib F, Guermazi F, Hentati S, Farhat N, Masmoudi J. Dimensions of alexithymia and their links to anxiety and depression. Eur Psychiatry 2022. [PMCID: PMC9564165 DOI: 10.1192/j.eurpsy.2022.1168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
Anxiety and depression are among the most common psychiatric comorbidities in multiple sclerosis (MS) patients. These disorders could lead to significant emotional disturbances.
Objectives
To study the different dimensions of alexithymia in patients with MS and determine their relationship with anxiety and depression.
Methods
Our study, descriptive and analytical, focused on patients followed for MS at the neurology department in Sfax (Tunisia). In addition to collecting sociodemographic data, we used the Hospital Anxiety and Depression Scale (HADS) to assess anxiety and depressive symptoms and the Toronto Alexithymia Scale (TAS-20) to assess alexithymia and its three dimensions: difficulty identifying emotions (DIE), difficulty differentiating emotions (DDE), and externally oriented thinking (EOT).
Results
This study included 93 patients followed for MS. Our results showed a prevalence of 58.1% for alexithymia, 38.7% for anxiety and 26.9% for depression. The median score of the dimension DIE was 22. The median score of the dimension DDE was 17. The mean score for the dimension EOT was 26.96 ± 4.18. Alexithymic patients were more anxious and depressed (p = 0,002 and p < 10-3, respectively). Both dimensions DIE and DDE were associated with anxiety (p = 0.001 and p = 0.022, respectively) and depression (p < 10-3 and p < 10-3, respectively). Non-depressed patients had a higher score on the EOT dimension (p = 0.003).
Conclusions
Our results showed a relationship between depression, anxiety and alexithymia, hence the importance of looking for alexithymia in MS patients with anxiety or depressive symptoms.
Disclosure
No significant relationships.
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Mejdoub S, Feki S, Farhat N, Dammak M, Hachicha H, Sakka S, Ayedi A, Ayedi F, Mhiri C, Masmoudi H. Antinuclear antibodies positivity is not rare during multiple sclerosis and is associated with relapsing status and IgG oligoclonal bands positivity. Rev Neurol (Paris) 2022; 178:812-816. [DOI: 10.1016/j.neurol.2021.11.016] [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] [Received: 08/31/2021] [Revised: 11/13/2021] [Accepted: 11/17/2021] [Indexed: 11/25/2022]
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Jensen N, Terrell R, Ramoju S, Shilnikova N, Farhat N, Karyakina N, Cline BH, Momoli F, Mattison D, Krewski D. Magnetic resonance imaging T1 indices of the brain as biomarkers of inhaled manganese exposure. Crit Rev Toxicol 2022; 52:358-370. [PMID: 36412542 DOI: 10.1080/10408444.2022.2128719] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Excessive exposure to manganese (Mn) is linked to its accumulation in the brain and adverse neurological effects. Paramagnetic properties of Mn allow the use of magnetic resonance imaging (MRI) techniques to identify it in biological tissues. A critical review was conducted to evaluate whether MRI techniques could be used as a diagnostic tool to detect brain Mn accumulation as a quantitative biomarker of inhaled exposure. A comprehensive search was conducted in MEDLINE, EMBASE, and PubMed to identify potentially relevant studies published prior to 9 May 2022. Two reviewers independently screened identified references using a two-stage process. Of the 6452 unique references identified, 36 articles were retained for data abstraction. Eligible studies used T1-weighted MRI techniques and reported direct or indirect T1 measures to characterize Mn accumulation in the brain. Findings demonstrate that, in subjects exposed to high levels of Mn, deposition in the brain is widespread, accumulating both within and outside the basal ganglia. Available evidence indicates that T1 MRI techniques can be used to distinguish Mn-exposed individuals from unexposed. Additionally, T1 MRI may be useful for semi-quantitative evaluation of inhaled Mn exposure, particularly when interpreted along with other exposure indices. T1 MRI measures appear to have a nonlinear relationship to Mn exposure duration, with R1 signal only increasing after critical thresholds. The strength of the association varied depending on the regions of interest imaged and the method of exposure measurement. Overall, available evidence suggests potential for future clinical and risk assessment applications of MRI as a diagnostic tool.
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Affiliation(s)
- N Jensen
- Risk Sciences International, Ottawa, Canada.,School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
| | - R Terrell
- Risk Sciences International, Ottawa, Canada.,School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
| | - S Ramoju
- Risk Sciences International, Ottawa, Canada
| | - N Shilnikova
- Risk Sciences International, Ottawa, Canada.,McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada
| | - N Farhat
- Risk Sciences International, Ottawa, Canada.,School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada.,School of Mathematics and Statistics, Carleton University, Ottawa, Canada
| | - N Karyakina
- Risk Sciences International, Ottawa, Canada.,McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada
| | - B H Cline
- International Manganese Institute, Paris, France
| | - F Momoli
- Risk Sciences International, Ottawa, Canada.,School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
| | - D Mattison
- Risk Sciences International, Ottawa, Canada.,School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada.,Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - D Krewski
- Risk Sciences International, Ottawa, Canada.,School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada.,McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada.,School of Mathematics and Statistics, Carleton University, Ottawa, Canada
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Chakroun S, Zouari H, Farhat N, Boukhdhir R, Dammak M, Mhiri C, Masmoudi K. HP40: Aging: An influencing factor in large fibers neuropathy during idiopathic Parkinson disease. Clin Neurophysiol 2022. [DOI: 10.1016/j.clinph.2021.11.038] [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: 11/27/2022]
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Laroussi S, Sakka S, Belghuith S, Farhat N, Hdiji O, Daoud S, Moalla K, Devaux J, Damak M, Mhiri C. Ritumixab efficacy in Treatment-resistant CIDP with tremor in an Antineurofascin155 seropositive pediatric case. Rev Neurol (Paris) 2021; 177:1310-1312. [PMID: 34256951 DOI: 10.1016/j.neurol.2021.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 02/28/2021] [Accepted: 03/03/2021] [Indexed: 10/20/2022]
Affiliation(s)
- S Laroussi
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia.
| | - S Sakka
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - S Belghuith
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - N Farhat
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - O Hdiji
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - S Daoud
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - K Moalla
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - J Devaux
- The Institute for Neurosciences of Montpellier, Saint Eloi Hospital, 34295 Montpellier, France
| | - M Damak
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - C Mhiri
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
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Belghuith S, Daoud S, Smaoui N, Farhat N, Sakka S, Hdiji O, Moalla K, Damak M, Bouali MM, Mhiri C. The bidirectional relationship between epilepsy and depression. Eur Psychiatry 2021. [PMCID: PMC9471149 DOI: 10.1192/j.eurpsy.2021.910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Introduction The relationship between epilepsy and depression has been recognized for a long time. In fact, the presence of depression could worsen the disease outcome. Objectives we aimed to study the prevalence of depression in patients with epilepsy and to assess the determinant factors of its genesis. Methods 54 patients with epilepsy, aged more than 18 years, attending the neurology department of Habib Bourguiba Hospital, Sfax, Tunisia, were enrolled for the study. All patients were administered Mini-International Neuropsychiatric Interview (MINI) for evalution of psychiatric comorbid disorders especially depression. Socio-demographic and clinical data were collected. Results A total of 54 patients were included, of whom 63% (n =34) were men. Mean duration of epilepsy was 20.13 years. The most frequent type of seizure was generalized 72.7%. Depression was present in 7.3 % of patients. Alcoholism (p=0.027) was significantly associated with occurrence of depression. Drug resistence (p = 0.03) and longer duration of epilepsy (p = 0.046) were significantly associated with occurrence of depression. No significant association was found between type of seizure, seizure frequency, medication compliance and depression. Depression wasn’t associated with anti-epileptic drug. We didn’t find any association between depression and other psychiatric comorbidities. Conclusions Depression wasn’t frequent in our study contrary to literature. The possible explanations are the reduced simple size and the sensitivity of the used tool to assess depression in epilepsy. Pursuant to literature, we found significant association between Alcoholism, drug resistance and long duration of epilepsy.
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Laroussi S, Moalla K, Hdiji O, Sakka S, Daoud S, Hadjkacem H, Farhat N, Mhiri C. Gayet wernicke encephalopathy: Don’t miss this neuropsychiatric emergency! Eur Psychiatry 2021. [PMCID: PMC9470825 DOI: 10.1192/j.eurpsy.2021.967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Gayet Wernicke Encephalopathy (GWE) is a diagnostic and therapeutic neuropsychiatric emergency due to thiamin deficiency (vitamin B1). Objectives The purpose of our work is to recall some clinical situations suspecting GWE, along with radiological and evolutionary profile. Methods We conducted a retrospective study concerning patients who were hospitalized in the neurology department of Habib Bourguiba Hospital between 2013 and 2020 for management of GWE. Results The median age of 7 patients was 39.57 years with sex ratio (H/F):1.33. The most common risk factor found is incoercible vomiting (5 patients), followed by chronic alcoholism (3 patients). Confusional state was the most frequent symptom found in 4 patients. The characteristic clinical triad of confusion, oculomotor disorders and ataxia was only found in 2 patients. Neuroimaging showed a typical aspect in 3 patients. The serum levels of thiamine were low in five patients and normal in two patients. After receiving parental than oral thiamin supplementation, three patients were independent after one month with a mRS score <3. Conclusions GWE is an acute neuropsychiatric emergency. Chronic alcoholism is recognized as its most common cause. The clinical triad is not constantly present. MRI shows typically bilateral symmetrical hyperintensities in periaqueductal area, periventricular region, thalami and mammillary bodies. Thiamin level can be normal since it does not accurately represent body thiamine status or in case of mutations in a thiamine-transporter gene. Thiamine therapy is warranted if any component of the GWE triad is present in an appropriate clinical setting to prevent irreversible neurological sequelae.
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Bouattour N, Farhat N, Sakka S, Hdiji O, Daoud S, Moalla K, Damak M, Mhiri C. An unusual case of acute myelopathy: Surfer's myelopathy in a teenage gymnast. Rev Neurol (Paris) 2021; 177:717-719. [PMID: 33478736 DOI: 10.1016/j.neurol.2020.09.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 08/29/2020] [Accepted: 09/01/2020] [Indexed: 10/22/2022]
Affiliation(s)
- N Bouattour
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia.
| | - N Farhat
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - S Sakka
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - O Hdiji
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - S Daoud
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - K Moalla
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - M Damak
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - C Mhiri
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
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Zouari R, Sakka S, Ketata S, Farhat N, Hdiji O, Hajkacem H, Dammak M, Mhiri C. Developmental venous anomalies and seizures: Coincidence or causation? Rev Neurol (Paris) 2020; 176:631-634. [DOI: 10.1016/j.neurol.2020.01.359] [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] [Received: 01/31/2019] [Revised: 01/26/2020] [Accepted: 01/28/2020] [Indexed: 11/30/2022]
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Mejdoub S, Feki S, Dammak M, Farhat N, Hdiji O, Boukthir S, Hachicha H, Mhiri C, Masmoudi H. Neuromyelitis optica spectrum disorders in South of Tunisia: A rare entity with low seroprevalence of anti-aquaporin 4 autoantibodies. Rev Neurol (Paris) 2020; 176:261-267. [DOI: 10.1016/j.neurol.2019.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 08/24/2019] [Accepted: 08/28/2019] [Indexed: 12/27/2022]
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Mguidich T, Sakka S, Saguem I, Kardoun N, Farhat N, Damak M, Mhiri C. An unusual presentation of secondary central nervous system T cell lymphoma. Rev Neurol (Paris) 2020; 176:877-878. [PMID: 32303343 DOI: 10.1016/j.neurol.2020.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/02/2020] [Accepted: 03/05/2020] [Indexed: 10/24/2022]
Affiliation(s)
- T Mguidich
- Department of neurology, Habib Bourguiba Hospital, Sfax, Tunisia.
| | - S Sakka
- Department of neurology, Habib Bourguiba Hospital, Sfax, Tunisia
| | - I Saguem
- Laboratory of anatomy and pathological cytology, Habib Bourguiba Hospital, Sfax, Tunisia
| | - N Kardoun
- Department of general surgery, Habib Bourguiba Hospital, Sfax, Tunisia
| | - N Farhat
- Department of neurology, Habib Bourguiba Hospital, Sfax, Tunisia
| | - M Damak
- Department of neurology, Habib Bourguiba Hospital, Sfax, Tunisia
| | - C Mhiri
- Department of neurology, Habib Bourguiba Hospital, Sfax, Tunisia
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Moalla K, Damak M, Chakroun O, Farhat N, Sakka S, Daoud S, Hdiji O, Kacem HH, Rekik N, Mhiri C. Predictive value of C-reactive protein for the outcome after stroke. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.651] [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: 11/26/2022]
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Mguidich T, Hdiji O, Kacem HH, Sakka S, Farhat N, Damak M, Chokri M. A case series of Lewis-Sumner syndrome. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1342] [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: 11/28/2022]
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Kharrat F, Hdiji O, Hajkacem H, Farhat N, Sakka S, Damak M, Chokri M. Multiple sclerosis with adrenal insufficiency mimicking adrenoleucodystrophy. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1352] [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: 10/25/2022]
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Moalla K, Damak M, Chakroun O, Farhat N, Hdiji O, Sakka S, Daoud S, Kacem HH, Rekik N, Mhiri C. Who is the target population for shortening prehospital delay in acute stroke? J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.654] [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: 10/25/2022]
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Kacem E, Sakka S, Farhat N, Hdiji O, Hajkacem H, Dammak M, Mhiri C. Myotonic dystrophy type 1 and endocrine system involvement. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1424] [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: 10/25/2022]
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Damak M, Farhat N, Mhiri C. The value of functional imaging and CSF biomarkers for the diagnosis of degenerative dementia. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.204] [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: 11/26/2022]
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Daoud S, Sakka S, Farhat N, Hdiji O, Kacem HH, Damak M, Mhiri C. Adult onset opsoclonus-myoclonus-ataxia syndrome, clinical features and diagnostic findings. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1305] [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: 11/28/2022]
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Moalla K, Damak M, Chakroun O, Farhat N, Daoud S, Hdiji O, Sakka S, Kacem HH, Rekik N, Mhiri C. Incidence and predictors of post‐stroke epilepsy. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.649] [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: 10/25/2022]
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Nadia B, Farhat N, Sakka S, Hdiji O, Dammak M, Mhiri C, Dhaker T. Secondary parkinsonian syndromes. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1363] [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: 10/25/2022]
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Turki D, Sakka S, Hdiji O, Farhat N, Dammak M, Mhiri C. Chorea-acanthocytosis: A Tunisian family. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1372] [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: 11/29/2022]
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Kharrat F, Hdiji O, Farhat N, Hajkacem H, Sakka S, Damak M, Mhiri C. Atypical course of Charcot-Marie-Tooth disease: what shall we be thinking of? J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1354] [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: 11/25/2022]
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Daoud S, Farhat N, Sakka S, Hdiji O, Moalla K, Kacem HH, Damak M, Mhiri C. Frontal presentation of Alzheimer’s Disease. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.976] [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: 10/25/2022]
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Hamza N, Hdiji O, Haj Kacem H, Farhat N, Sakka S, Dammak M, Mhiri C. Dyke Davidoff Masson syndrome a rare cause of schizoaffective disorder: A case report and review of the literature. Encephale 2019; 45:274-275. [PMID: 30879779 DOI: 10.1016/j.encep.2019.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 01/14/2019] [Accepted: 01/22/2019] [Indexed: 11/24/2022]
Affiliation(s)
- N Hamza
- Neurology department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia.
| | - O Hdiji
- Neurology department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - H Haj Kacem
- Neurology department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - N Farhat
- Neurology department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - S Sakka
- Neurology department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - M Dammak
- Neurology department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - C Mhiri
- Neurology department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
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Moalla K, Chakroun O, Hdiji O, Farhat N, Haj Kacem H, Damak M, Mhiri C. A study of clinical features, risk factors and short-term outcome of ischemic stroke in patients with and without atrial fibrillation in a North African population. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1760] [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: 10/18/2022]
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Kharrat F, Hdiji O, Haj Kacem H, Farhat N, Damak M, Mhiri C. Cervicocephalic arterial dissection. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1749] [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: 10/18/2022]
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33
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Hamza N, Hdiji O, Haj Kacem H, Farhat N, Dammak M, Mhiri C. Neuromyelitis optica: About 11 cases. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3451] [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: 10/18/2022]
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34
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Nadia B, Farhat N, Hadjkacem H, Hdiji O, Dammak M, Mhiri C. Normative data for verbal fluency task (VFT) in the adult Tunisian population. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3190] [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: 11/29/2022]
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35
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Hamza N, Hdiji O, Haj Kacem H, Farhat N, Dammak M, Mhiri C. Intracranial hypertension: A rare complication of Guillain Barre Syndrome. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.794] [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: 11/28/2022]
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Sawsan D, Farhat N, Zouari L, Omri S, Dammak M, Maalej M, Mhiri C. Behavioral and psychological symptoms of Alzheimer’s disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2195] [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: 11/17/2022]
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38
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Bouattour N, Farhat N, Hadjkacem H, Hdiji O, Dammak M, Mhiri C. Trail Making Test (TMT): Tunisian normative values from 339 normal adult controls. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2381] [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: 11/27/2022]
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39
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Charfi N, Daoud S, Farhat N, Bouali MM, Zouari L, Zouari N, Thabet JB, Damak M, Mhiri C, Maalej M. Prevalence of psychiatric comorbidities in epilepsy. Eur Psychiatry 2017. [DOI: 10.1016/j.eurpsy.2017.01.536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
IntroductionEpilepsy is a chronic disease defined as a brain disorder, characterized by a predisposition to present seizures, generating cognitive, psychological, and social consequences.ObjectiveTo determine the prevalence of psychiatric comorbid disorders in patients with epilepsy (PWEs) and its associated factors.MethodsWe conducted a cross-sectional study involving 30 PWEs who were treated in the neurology department of Habib Bourguiba Hospital in Sfax, Tunisia. We used the Mini International Neuropsychiatric Interview for the diagnosis of Axis I psychiatric disorders.ResultsThe half of patients had psychiatric comorbidities: 4 had major depressive disorder (MDD), 2 had MDD with generalized anxiety disorder, 4 had MDD with social phobia, 1 had bipolar disorder type I, 1 had panic disorder, 1 had agoraphobia and 2 had generalized anxiety disorder.Twenty-five PWEs had seizure-onset below 30 years old and among them, 40% had psychiatric comorbidities. Among patients who had seizure-onset above 30 years old, none had psychiatric comorbidities. Psychiatric comorbidities were found in 71.5% of patients with seizure frequency >2 per year. Psychiatric comorbidities were more common in patients with generalized seizures compared to whom with partial seizures (53% versus 45%). It was also more common in patients treated with polytherapy compared to whom with monotherapy (64% versus 37.5%).ConclusionThe prevalence of psychiatric comorbidities is relatively high among PWEs. The most frequent diagnoses found were mood and anxiety disorders. It is very important to identify them and treat them to enhance seizure control.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Farhat N, Smaoui A, Maurousset L, Porcheron B, Lemoine R, Abdelly C, Rabhi M. Sulla carnosa modulates root invertase activity in response to the inhibition of long-distance sucrose transport under magnesium deficiency. Plant Biol (Stuttg) 2016; 18:1031-1037. [PMID: 27488230 DOI: 10.1007/s11738-016-2165-z] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 07/30/2016] [Indexed: 05/27/2023]
Abstract
Being the principal product of photosynthesis, sucrose is involved in many metabolic processes in plants. As magnesium (Mg) is phloem mobile, an inverse relationship between Mg shortage and sugar accumulation in leaves is often observed. Mg deficiency effects on carbohydrate contents and invertase activities were determined in Sulla carnosa Desf. Plants were grown hydroponically at different Mg concentrations (0.00, 0.01, 0.05 and 1.50 mM Mg) for one month. Mineral analysis showed that Mg contents were drastically diminished in shoots and roots mainly at 0.01 and 0.00 mM Mg. This decline was adversely associated with a significant increase of sucrose, fructose and mainly glucose in shoots of plants exposed to severe deficiency. By contrast, sugar contents were severely reduced in roots of these plants indicating an alteration of carbohydrate partitioning between shoots and roots of Mg-deficient plants. Cell wall invertase activity was highly enhanced in roots of Mg-deficient plants, while the vacuolar invertase activity was reduced at 0.00 mM Mg. This decrease of vacuolar invertase activity may indicate the sensibility of roots to Mg starvation resulting from sucrose transport inhibition. 14 CO2 labeling experiments were in accordance with these findings showing an inhibition of sucrose transport from source leaves to sink tissues (roots) under Mg depletion. The obtained results confirm previous findings about Mg involvement in photosynthate loading into phloem and add new insights into mechanisms evolved by S. carnosa to cope with Mg shortage in particular the increase of the activity of cell wall invertase.
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Affiliation(s)
- N Farhat
- Laboratory of Extremophile Plants, Biotechnology Centre of Borj Cedria, Hammam-Lif, Tunisia.
| | - A Smaoui
- Laboratory of Extremophile Plants, Biotechnology Centre of Borj Cedria, Hammam-Lif, Tunisia
| | - L Maurousset
- UMR7267 - EBI - Equipe SEVE, CNRS/Université de Poitiers, Poitiers, France
| | - B Porcheron
- UMR7267 - EBI - Equipe SEVE, CNRS/Université de Poitiers, Poitiers, France
| | - R Lemoine
- UMR7267 - EBI - Equipe SEVE, CNRS/Université de Poitiers, Poitiers, France
| | - C Abdelly
- Laboratory of Extremophile Plants, Biotechnology Centre of Borj Cedria, Hammam-Lif, Tunisia
| | - M Rabhi
- Laboratory of Extremophile Plants, Biotechnology Centre of Borj Cedria, Hammam-Lif, Tunisia
- University of Hafr Al Batin, College of Science and Arts in Nairiyah, Nairiyah, Saudi Arabia
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41
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Farhat N, Smaoui A, Maurousset L, Porcheron B, Lemoine R, Abdelly C, Rabhi M. Sulla carnosa modulates root invertase activity in response to the inhibition of long-distance sucrose transport under magnesium deficiency. Plant Biol (Stuttg) 2016; 18:1031-1037. [PMID: 27488230 DOI: 10.1111/plb.12489] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 07/30/2016] [Indexed: 06/06/2023]
Abstract
Being the principal product of photosynthesis, sucrose is involved in many metabolic processes in plants. As magnesium (Mg) is phloem mobile, an inverse relationship between Mg shortage and sugar accumulation in leaves is often observed. Mg deficiency effects on carbohydrate contents and invertase activities were determined in Sulla carnosa Desf. Plants were grown hydroponically at different Mg concentrations (0.00, 0.01, 0.05 and 1.50 mM Mg) for one month. Mineral analysis showed that Mg contents were drastically diminished in shoots and roots mainly at 0.01 and 0.00 mM Mg. This decline was adversely associated with a significant increase of sucrose, fructose and mainly glucose in shoots of plants exposed to severe deficiency. By contrast, sugar contents were severely reduced in roots of these plants indicating an alteration of carbohydrate partitioning between shoots and roots of Mg-deficient plants. Cell wall invertase activity was highly enhanced in roots of Mg-deficient plants, while the vacuolar invertase activity was reduced at 0.00 mM Mg. This decrease of vacuolar invertase activity may indicate the sensibility of roots to Mg starvation resulting from sucrose transport inhibition. 14 CO2 labeling experiments were in accordance with these findings showing an inhibition of sucrose transport from source leaves to sink tissues (roots) under Mg depletion. The obtained results confirm previous findings about Mg involvement in photosynthate loading into phloem and add new insights into mechanisms evolved by S. carnosa to cope with Mg shortage in particular the increase of the activity of cell wall invertase.
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Affiliation(s)
- N Farhat
- Laboratory of Extremophile Plants, Biotechnology Centre of Borj Cedria, Hammam-Lif, Tunisia.
| | - A Smaoui
- Laboratory of Extremophile Plants, Biotechnology Centre of Borj Cedria, Hammam-Lif, Tunisia
| | - L Maurousset
- UMR7267 - EBI - Equipe SEVE, CNRS/Université de Poitiers, Poitiers, France
| | - B Porcheron
- UMR7267 - EBI - Equipe SEVE, CNRS/Université de Poitiers, Poitiers, France
| | - R Lemoine
- UMR7267 - EBI - Equipe SEVE, CNRS/Université de Poitiers, Poitiers, France
| | - C Abdelly
- Laboratory of Extremophile Plants, Biotechnology Centre of Borj Cedria, Hammam-Lif, Tunisia
| | - M Rabhi
- Laboratory of Extremophile Plants, Biotechnology Centre of Borj Cedria, Hammam-Lif, Tunisia
- University of Hafr Al Batin, College of Science and Arts in Nairiyah, Nairiyah, Saudi Arabia
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42
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Solowianiuk M, Soulatges C, Farhat N, Holzki J, Seghaye MC. [When an encircling aortic arch anomaly hides behind respiratory and digestive symptoms in children]. REVUE MEDICALE DE LIEGE 2016; 71:502-508. [PMID: 28387106] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Aortic arch anomalies are relatively frequent and account for 15 to 20 % of all congenital cardiovascular malformations. They can be discovered in case of symptoms of airway or esophageal compression such as dysphagia, chronic cough, stridor, wheezing and recurrent respiratory infections. We report the cases of two children with encircling aortic arch anomaly. The 3-year-old boy had complained of chronic respiratory symptoms such as laryngitis and asthma since the age of 4 months. The 20-month-old boy presented with inter-mittent stridor, dysphagia and frequent vomiting. In both patients, the cervico-thoracic CT-scan showed a right aortic arch with retro-esophageal left subclavian artery and Kommerell's diverticulum. Surgery was curative. The understanding of normal and abnormal embryologic development of the aortic arch, and the knowledge of the different types of vascular compression and their clinical signs are mandatory for the early diagnosis and adequate treatment of such malformations.
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Affiliation(s)
| | - C Soulatges
- Service de Cardio-Pédiatrie, CHU Montpellier, France
| | - N Farhat
- Service de Pédiatrie, CHU de Liège, Site NDB, Liège, Belgique
| | - J Holzki
- Service de Pédiatrie, CHU de Liège, Site NDB, Liège, Belgique
| | - M-C Seghaye
- Service de Pédiatrie, CHU de Liège, Site NDB, Liège, Belgique
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43
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Bragard I, Farhat N, Seghaye MC, Schumacher K. [High fidelity simulation : a new tool for learning and research in pediatrics]. Rev Med Liege 2016; 71:455-459. [PMID: 28383854] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Caring for a sick child represents a high risk activity that requires technical and non-technical skills related to several factors such as the rarity of certain events or the stress of caring for a child. As regard these conditions, medi¬cal simulation provides a learning environment without risk, the control of variables, the reproducibility of situations, and the confrontation with rare events. In this article, we des¬cribe the steps of a simulation session and outline the current knowledge of the use of simulation in paediatrics. A session of simulation includes seven phases following the model of Peter Dieckmann, particularly the scenario and the debriefing that form the heart of the learning experience. Several studies have shown the advantages of simulation for paediatric trai¬ning in terms of changes in attitudes, skills and knowledge. Some studies have demonstrated a beneficial transfer to prac¬tice. In conclusion, simulation provides great potential for training and research in paediatrics. The establishment of a collaborative research program by the whole simulation com¬munity would help ensure that this type of training improves the quality of care.
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Affiliation(s)
- I Bragard
- Département de Pédiatrie, CHU de Liège, site ND des Bruyères
- Unité de Psychologie de la Santé, Université de Liège, Belgique
| | - N Farhat
- Département de Pédiatrie, CHU de Liège, site ND des Bruyères, Liège, Belgique
| | - M-C Seghaye
- Département de Pédiatrie, CHU de Liège, site ND des Bruyères, Liège, Belgique
| | - K Schumacher
- Département de Pédiatrie, CHU de Liège, site ND des Bruyères, Liège, Belgique
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44
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Magotteaux S, Bulk S, Farhat N, Sakalihasan N, Defraigne JO, Seghaye MC. [Marfan syndrome in childhood and adolescence]. Rev Med Liege 2016; 71:342-348. [PMID: 28383843] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The Marfan syndrome is a systemic connective tissue disorder with autosomal dominant inheritance. A mutation of the fibrillin-1 gene, a glycoprotein which is the main constituent of the extracellular matrix, is the cause of the disease. The cardinal features involve the skeletal, ocular and cardiovascular systems. The expression of the Marfan syndrome varies from the severe neonatal presentation to the classical manifestations of the child and young adult, but also comprises isolated features. In children, phenotypical manifestations are age dependent. For these reasons, the diagnosis of Marfan syndrome might be lately revealed by its cardiovascular complications. We report the case of 2 siblings: it illustrates the phenotypic variability that might be observed in a same family, the phenotype evolution with age and the diagnosis challenge in childhood.
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Affiliation(s)
| | - S Bulk
- Service de Génétique, CHU de Liège, Belgique
| | - N Farhat
- Service de Pédiatrie, CHU de Liège, Site NDB, Chênée, Belgique
| | - N Sakalihasan
- Service de Chirurgie Cardiovasculaire, CHU de Liège, Belgique
| | - J-O Defraigne
- Service de Chirurgie Cardiovasculaire, CHU de Liège, Belgique
| | - M-Ch Seghaye
- Service de Pédiatrie, CHU de Liège, Site NDB, Chênée, Belgique
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45
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Ara JG, Naushaba H, Khan MH, Khan LF, Farhat N. Morphometric Study of Nutrient Foramen in Adult Human Dry Left Humerus. Mymensingh Med J 2016; 25:45-49. [PMID: 26931248] [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: 06/05/2023]
Abstract
The major blood supply to long bones occurs through the nutrient arteries, which enter through the nutrient foramen. The supply of nutrient artery starts during the early phases of ossification. It is essential in operative procedures such as bone graft, tumour resection, trauma healing and bone transplant techniques both in orthopedics and micro vascular surgery. The present study is an observational analytic type of study which was performed on two hundred (n=200; male=117 & female=83) left sided dry humerus bones. In this present study the majority of the bones had a single nutrient foramen which may represent a single source of blood supply. The location of the nutrient foramen is predominant on the antero-medial aspect of humerus. The position of the nutrient foramen is predominant on the middle 1/5th of the shaft humerus. There was no significant difference (p=0.319) in presence, absence, number, location and position of nutrient foramen in male and female left human humerus. This study and recorded data may help in surgical procedures in orthopedics and in micro vascular surgery.
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Affiliation(s)
- J G Ara
- Dr Jubaida Gulshan Ara, Assistant Professor, Department of Anatomy, Sir Salimullah Medical College, Dhaka, Bangladesh
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46
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Laplante P, Fuentes R, Salem D, Subang R, Gillis MA, Hachem A, Farhat N, Qureshi ST, Fletcher CA, Roubey RAS, Merhi Y, Thorin É, Levine JS, Mackman N, Rauch J. Antiphospholipid antibody-mediated effects in an arterial model of thrombosis are dependent on Toll-like receptor 4. Lupus 2015; 25:162-76. [PMID: 26391610 DOI: 10.1177/0961203315603146] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [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: 06/23/2015] [Accepted: 07/29/2015] [Indexed: 11/17/2022]
Abstract
Patients with antiphospholipid syndrome (APS) produce antiphospholipid antibodies (aPL) and develop vascular thrombosis that may occur in large or small vessels in the arterial or venous beds. On the other hand, many individuals produce aPL and yet never develop thrombotic events. Toll-like receptor 4 (TLR4) appears to be necessary for aPL-mediated prothrombotic effects in venous and microvascular models of thrombosis, but its role in arterial thrombosis has not been studied. Here, we propose that aPL alone are insufficient to cause thrombotic events in an arterial model of APS, and that a concomitant trigger of innate immunity (e.g. TLR4 activation) is required. We show specifically that anti-β2-glycoprotein I (anti-β2GPI) antibodies, a subset of aPL, accelerated thrombus formation in C57BL/6 wild-type, but not TLR4-deficient, mice in a ferric chloride-induced carotid artery injury model. These aPL bound to arterial and venous endothelial cells, particularly in the presence of β2GPI, and to human TLR4 by enzyme-linked immunoassay. Arterial endothelium from aPL-treated mice had enhanced leukocyte adhesion, compared to control IgG-treated mice. In addition, aPL treatment of mice enhanced expression of tissue factor (TF) in leukocytes induced by the TLR4 ligand lipopolysaccharide (LPS). aPL also enhanced LPS-induced TF expression in human leukocytes in vitro. Our findings support a mechanism in which aPL enhance TF expression by leukocytes, as well as augment adhesion of leukocytes to the arterial endothelium. The activation of TLR4 in aPL-positive individuals may be required to trigger thrombotic events.
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Affiliation(s)
- P Laplante
- Division of Rheumatology, Department of Medicine, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada Current affiliation: Centre Hospitalier de l'Université de Montréal (CHUM) Research Center, Montreal, Quebec, Canada
| | - R Fuentes
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA Current affiliation: Cato Research Ltd., Durham, NC
| | - D Salem
- Division of Rheumatology, Department of Medicine, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - R Subang
- Division of Rheumatology, Department of Medicine, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - M-A Gillis
- Montreal Heart Institute, Université de Montréal, Montreal Heart Institute, Montreal, Quebec, Canada
| | - A Hachem
- Montreal Heart Institute, Université de Montréal, Montreal Heart Institute, Montreal, Quebec, Canada
| | - N Farhat
- Montreal Heart Institute, Université de Montréal, Montreal Heart Institute, Montreal, Quebec, Canada Current affiliation: Pharsight, a Certara™ Company, Montreal, Quebec, Canada
| | - S T Qureshi
- Department of Critical Care and Department of Medicine, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - C A Fletcher
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - R A S Roubey
- Division of Rheumatology, Allergy, and Immunology, Department of Medicine and Thurston Arthritis Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Y Merhi
- Montreal Heart Institute, Université de Montréal, Montreal Heart Institute, Montreal, Quebec, Canada
| | - É Thorin
- Montreal Heart Institute, Université de Montréal, Montreal Heart Institute, Montreal, Quebec, Canada
| | - J S Levine
- Section of Nephrology, Department of Medicine, University of Illinois at Chicago, and Section of Nephrology, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, IL, USA
| | - N Mackman
- Division of Hematology/Oncology, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - J Rauch
- Division of Rheumatology, Department of Medicine, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
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47
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Rhouma FIH, Dhahri A, Farhat N, Dhahri J, Khirouni K. Study of the La 0.2235Pr 0.2235Nd 0.2235Sr 0.33MnO 3ceramic by X ray diffraction and impedance spectroscopy. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20122900023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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48
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Farhat N, Matouk CC, Mamarbachi AM, Marsden PA, Allen BG, Thorin E. Activation of ETB receptors regulates the abundance of ET-1 mRNA in vascular endothelial cells. Br J Pharmacol 2008; 153:1420-31. [PMID: 18278064 DOI: 10.1038/bjp.2008.25] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND AND PURPOSE The factors that influence the cellular levels of endothelin-1 (ET-1) include transcription, mRNA localization, stability and translation, post-translational maturation of preproET-1 and degradation of ET-1. We investigated the regulation of ET-1 mRNA abundance by extracellular ET-1 in porcine aortic endothelial cells (PAECs). EXPERIMENTAL APPROACH Passsage one cultures of PAECs were incubated in starving medium in the presence or absence of ET-1 and antagonists or pharmacological inhibitors. PreproET-1 mRNA, endothelin-1 promoter activity, Erk and p38 MAPK activation were determined. KEY RESULTS Exogenous ET-1 reduced cellular ET-1 mRNA content: a reduction of 10 000-fold was observed after 4 h. ET-1 simultaneously reduced the stability of ET-1 mRNA and increased the loading of RNA Polymerase II at the endothelin-1 promoter. In the absence of exogenous ET-1, the ETB-selective antagonist, BQ788, increased ET-1 mRNA. An ETA-selective antagonist had no effect. ET-1 mRNA returned to control levels within 24 h. Whereas activation of p38 MAPK induced by ET-1 peaked at 30 min and returned to control levels within 90 min, Erk1/2 remained active after 4 h of stimulation. Inhibition of p38 MAPK prevented the ET-1-induced decrease in ET-1 mRNA. In contrast, Erk1/2 inhibition increased ET-1 mRNA. Similarly, inhibition of receptor internalization increased ET-1 mRNA in the presence or absence of exogenous ET-1. CONCLUSIONS AND IMPLICATIONS These results suggest that extracellular ET-1 regulates the abundance of ET-1 mRNA in PAECs, in an ETB receptor-dependent manner, by modulating both mRNA stability and transcription via mechanisms involving receptor endocytosis and both ERK and p38 MAPK pathways.
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Affiliation(s)
- N Farhat
- Department of Biochemistry, University of Montreal, Montreal, Quebec, Canada
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Farhat N, Thorin-Trescases N, Perrault L, Thorin E. Reversal of mRNA misexpression by a chronic antioxidant treatment in endothelial cells cultured from atherosclerotic patients. Vascul Pharmacol 2006. [DOI: 10.1016/j.vph.2006.08.197] [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: 10/24/2022]
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Tower JR, Farhat N. The transversal imager: a photonic neurochip with programmable synaptic weights. IEEE Trans Neural Netw 1995; 6:248-251. [PMID: 18263304 DOI: 10.1109/72.363431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A photonic neural processor implemented in NMOS/CCD integrated circuit technology is described. The processor performs outer-product processing utilizing optical input of the synaptic weights and electrical input of the state vector, or, visa versa. The performance of the 32-neuron, 1024-synapse processor is presented.
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Affiliation(s)
- J R Tower
- David Sarnoff Res. Center, Princeton, NJ
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