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Karametou M, Doulioglou V, Pavlidou E, Patoulias I, Prassopoulos P, Koletsa T, Ioannidou M, Palabougiouki M, Tragiannidis A, Sfougaris D, Papageorgiou T, Pavlou E, Hatzipantelis E. PO-49 CNS thrombosis as initial symptom of ALK+ALCL in a child. Thromb Res 2021. [DOI: 10.1016/s0049-3848(21)00222-x] [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: 10/21/2022]
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Fountoulakis P, Oikonomou E, Papaioannou T, Tsalamandris S, Papamikroulis G, Pallantza Z, Pavlou E, Milliou A, Assimakopoulou M, Barbaresos N, Giannarakis I, Siamata P, Tousoulis D. Implications of diesel exhaust fumes exposure on vascular wall properties, endothelial function and inflammatory process. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.690] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Fountoulakis P, Oikonomou E, Papaioannou T, Psaltopoulou T, Tsalamandris S, Papamikroulis GA, Kalampogias A, Pallantza Z, Pavlou E, Milliou A, Asimakopoulou MN, Barbaresos N, Giannarakis I, Siamata P, Tousoulis D. 405Acute and short-term effects of diesel exhaust fumes exposure on arterial wall properties, inflammatory process and fibrosis-fibrinolysis status. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0101] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Exhaust fumes from diesel engines are a complex mixture of toxic compounds with a wide variety of harmful effects. The acute effects of diesel exhaust fumes on the cardiovascular system are well-known. However, their short-term impact has not been thoroughly studied.
Purpose
To study the acute and short-term (24 h) effects of diesel exhaust particles (DEPs) on endothelial function, arterial wall properties, inflammatory process and fibrosis-fibrinolysis status.
Methods
In this blind cross over study, 40 healthy volunteers (median age 40 years old) have been exposed to diesel exhaust particles (DEPs) and then to filtered air (FA) over a 2-hour session with a wash out period of 4 weeks. Exposure to DEPs was calibrated based on the mass of microparticles less than 2,5 microns in diameter (PM 2,5). Flow-mediated-dilation (FMD) was used to estimate endothelial function. Pulse wave velocity (PWV) and augmentation index (AIx) assessed central aortic stiffness and arterial reflected waves respectively. C reactive protein (CRP) was measured to determine the inflammatory status, as well as fibrinogen and protein C levels to evaluate the impact on the coagulation cascade. All measurements were performed before each session (T0), at the end of the 2 hours exposure session (T2) and 24 hours after completion of each session (T24). Variables with normal distribution are presented as mean±SD otherwise as median±SEM.
Results
At T0 of DEP and FA exposure there was no significant difference in FMD, PWV, AIX, CRP, protein C and fibrinogen levels. Exposure to DEP decreased significantly FMD (T0: 11.97±4.61% vs T2: 7.71±3.36% vs. T24: 6.17±3.19%, p<0.001) and increased PWV (T0: 6.09±1.03m/sec vs T2: 7.22±1.31m/sec vs. T24: 6.90±1.03m/sec, p<0.001), AIx (T0: 8.17±3.19% vs T2: 12.71±3.36% vs. T24: 13.17±4.61%, p<0.001), CRP (T0: 1.41±0.18 mg/L vs T2: 1.99±0.21mg/L vs. T24: 2.08±0.24mg/L, p=0.04) and fibrinogen levels (T0: 269±44 mg/dL vs T2: 331±75 mg/dL vs. T24: 307±51 mg/dL, p=0.002). Protein C was significantly reduced (T0: 121±26% vs T2: 104±21% vs. T24: 105±20%, p=0.003). Exposure to FA had no significant impact on the study parameters.
Graph of results
Conclusion
Exposure to diesel exhaust fumes may have significant adverse effects on the cardiovascular system with impairment of endothelial function, arterial wall properties, inflammatory status and fibrosis-fibrinolysis parameters not only during the exposure period but as far as 24 hours after exposure.
Acknowledgement/Funding
None
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Affiliation(s)
| | - E Oikonomou
- Hippokration General Hospital, Athens, Greece
| | | | | | | | | | | | - Z Pallantza
- Hippokration General Hospital, Athens, Greece
| | - E Pavlou
- Hippokration General Hospital, Athens, Greece
| | - A Milliou
- Hippokration General Hospital, Athens, Greece
| | - M N Asimakopoulou
- National and Kapodistrian University of Athens, Physics, Athens, Greece
| | - N Barbaresos
- National and Kapodistrian University of Athens, Physics, Athens, Greece
| | - I Giannarakis
- National and Kapodistrian University of Athens, Physics, Athens, Greece
| | - P Siamata
- National and Kapodistrian University of Athens, Physics, Athens, Greece
| | - D Tousoulis
- Hippokration General Hospital, Athens, Greece
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Lederer CW, Pavlou E, Tanteles GA, Evangelidou P, Sismani C, Kolnagou A, Sitarou M, Christou S, Hadjigavriel M, Kleanthous M. Hb A 2 Episkopi - a novel δ-globin chain variant [HBD:c.428C>T] in a family of mixed Cypriot-Lebanese descent. ACTA ACUST UNITED AC 2016; 22:304-309. [PMID: 28007020 DOI: 10.1080/10245332.2016.1265043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 10/20/2022]
Abstract
OBJECTIVES Thalassaemia is a potentially lethal inherited anaemia, caused by reduced or absent synthesis of globin chains. Measurement of the minor adult haemoglobin Hb A2, combining α- with δ-globin, is critical for the routine diagnosis of carrier status for α- or β-thalassaemia. Here, we aim to characterize a novel δ-globin variant, Hb A2 Episkopi, in a single family of mixed Lebanese and Cypriot ancestry with mild hypochromic anaemia and otherwise normal globin genotype, which also presents with a coincidental 0.78-Mb sequence duplication on chromosome 1 (1q44) and developmental abnormalities. METHODS Analyses included comprehensive haematological analyses, cation-exchange high-performance liquid chromatography (CE-HPLC), cellulose acetate electrophoresis (CAE), Sanger sequencing and structure-based stability predictions for Hb A2 Episkopi. RESULTS The GCT > GTT missense mutation, underlying Hb A2 Episkopi, HBD:c.428C > T, introduces a cd142 codon change in the mature protein, resulting in reduced normal Hb A2 amounts and a novel, less abundant Hb A2 variant (HGVS: HBD:p.A143V), detectable as a delayed peak by CE-HPLC. The latter was in line with structure-based stability predictions, which indicated that the substitution of a marginal, non-helical and non-interface residue, five amino acids from the δ-globin chain carboxy-terminus, was moderately destabilizing. DISCUSSION Detection of the new variant depends on the diagnostic set-up and had failed by CAE and on an independent CE-HPLC system, which, in unfavourable circumstances, may lead to misdiagnoses of β-thalassaemia as α-thalassaemia. Given the mixed background of the affected family, the ethnic origin of the mutation is unclear, and this study thus suggests awareness for possible detection of Hb A2 Episkopi in both the Cypriot and the Lebanese populations.
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Affiliation(s)
- Carsten W Lederer
- a Department of Molecular Genetics Thalassaemia , The Cyprus Institute of Neurology and Genetics, Cyprus & Cyprus School of Molecular Medicine , Nicosia , Cyprus
| | - Eleni Pavlou
- a Department of Molecular Genetics Thalassaemia , The Cyprus Institute of Neurology and Genetics, Cyprus & Cyprus School of Molecular Medicine , Nicosia , Cyprus
| | - George A Tanteles
- b Clinical Genetics Department , The Cyprus Institute of Neurology and Genetics , Nicosia , Cyprus
| | - Paola Evangelidou
- c Department of Cytogenetics and Genomics , The Cyprus Institute of Neurology and Genetics, Cyprus & Cyprus School of Molecular Medicine , Nicosia , Cyprus
| | - Carolina Sismani
- c Department of Cytogenetics and Genomics , The Cyprus Institute of Neurology and Genetics, Cyprus & Cyprus School of Molecular Medicine , Nicosia , Cyprus
| | | | | | | | | | - Marina Kleanthous
- a Department of Molecular Genetics Thalassaemia , The Cyprus Institute of Neurology and Genetics, Cyprus & Cyprus School of Molecular Medicine , Nicosia , Cyprus
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Papasavva T, Martin P, Legler TJ, Liasides M, Anastasiou G, Christofides A, Christodoulou T, Demetriou S, Kerimis P, Kontos C, Leontiades G, Papapetrou D, Patroclos T, Phylaktou M, Zottis N, Karitzie E, Pavlou E, Kountouris P, Veldhuisen B, van der Schoot E, Kleanthous M. Prevalence of RhD status and clinical application of non-invasive prenatal determination of fetal RHD in maternal plasma: a 5 year experience in Cyprus. BMC Res Notes 2016; 9:198. [PMID: 27036548 PMCID: PMC4818414 DOI: 10.1186/s13104-016-2002-x] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 03/22/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND After the discovery that cell-free fetal DNA (cffDNA) is circulating in the maternal plasma of pregnant women, non-invasive prenatal diagnosis for fetal RhD in maternal plasma in RhD negative women at risk for haemolytic disease of the newborn (HDN) was clinically established and used by many laboratories. The objectives of this study are: (a) to assess the feasibility and report our experiences of the routine implementation of fetal RHD genotyping by analysis of cffDNA extracted from maternal plasma of RhD negative women at risk of HDN, and (b) to estimate the RhD phenotype frequencies, the RHD genotype frequencies and the RhD zygosity in the Cypriot population. METHODS cffDNA was extracted from maternal plasma of 73 RhD negative pregnant women. Real-Time Multiplex-PCR was used to amplify regions of RHD gene in exons 4, 5 and 10. RhD phenotypes were determined on 445 random samples using conventional agglutination slide test. RESULTS The fetus was predicted to be positive in 53 cases and negative in 18 cases. Two of cases were identified as D-variants, weak D type-1 and 11. The frequency of RhD negative homozygosity in the Cypriot population was estimated to be 7.2%, while the frequencies of RHD hemizygosity and RhD positive homozygosity was calculated to be 39.2 and 53.6%, respectively. CONCLUSION Fetal RHD genotyping can be accurately determined using cffDNA from maternal plasma. The implementation of the test has eliminated all use of unnecessary anti-D and reduced the total use of anti-D by 25.3% while achieving appropriate management of the RhD negative pregnancies.
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Affiliation(s)
- Thessalia Papasavva
- Molecular Genetics Thalassaemia Department, The Cyprus Institute of Neurology and Genetics, 6 Internanional Airport Ave, Agios Dometios, 1683, Nicosia, Cyprus.
| | - Pete Martin
- International Blood Group Reference Laboratory, Bristol Institute for Transfusion Sciences, NHS Blood and Transport, North Bristol Park, Filton, Bristol, BS34 7QG, UK
| | - Tobias J Legler
- Department of Transfusion Medicine, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075, Göttingen, Germany
| | - Marios Liasides
- Zoodochou Pigis Clinic, 9 Antisthenous, Kapsalos, 3086, Limassol, Cyprus
| | - George Anastasiou
- Mother and Child Medical Center, 9-11 Penelopis Delta Str., 1076, Nicosia, Cyprus
| | | | - Tasos Christodoulou
- Apollonion Private Hospital, Lefkotheou 20, Strovolos, 2054, Nicosia, Cyprus
| | - Sotos Demetriou
- European Woman's Clinic, Vyzantiou 26, Strovolos, 2064, Nicosia, Cyprus
| | - Prokopis Kerimis
- Ygia Polyclinic Private Hospital, 21, Nafpliou str., 3305, Limassol, Cyprus
| | - Charis Kontos
- Iasis Hospital, 8 Voriou Ipirou str., 8069, Paphos, Cyprus
| | | | - Demetris Papapetrou
- Mother and Child Medical Center, 9-11 Penelopis Delta Str., 1076, Nicosia, Cyprus
| | | | - Marios Phylaktou
- Apollonion Private Hospital, Lefkotheou 20, Strovolos, 2054, Nicosia, Cyprus
| | - Nikos Zottis
- Ledra Obstetrics Gynecology Clinic, 19 Pindarou, Ayios Antonios, 1060, Nicosia, Cyprus
| | - Eleni Karitzie
- Molecular Genetics Thalassaemia Department, The Cyprus Institute of Neurology and Genetics, 6 Internanional Airport Ave, Agios Dometios, 1683, Nicosia, Cyprus
| | - Eleni Pavlou
- Molecular Genetics Thalassaemia Department, The Cyprus Institute of Neurology and Genetics, 6 Internanional Airport Ave, Agios Dometios, 1683, Nicosia, Cyprus
| | - Petros Kountouris
- Molecular Genetics Thalassaemia Department, The Cyprus Institute of Neurology and Genetics, 6 Internanional Airport Ave, Agios Dometios, 1683, Nicosia, Cyprus
| | | | | | - Marina Kleanthous
- Molecular Genetics Thalassaemia Department, The Cyprus Institute of Neurology and Genetics, 6 Internanional Airport Ave, Agios Dometios, 1683, Nicosia, Cyprus
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Pavlou E, Gkampeta A, Kouskouras K, Evangeliou A, Athanasiadou-Piperopoulou F. Idiopathic acute transverse myelitis: Complete recovery after intravenous immunoglobulin. Hippokratia 2012; 16:283-285. [PMID: 23935301 PMCID: PMC3738741] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Idiopathic acute transverse myelitis is a focal inflammatory disorder of the spinal cord of unknown etiology diagnosed according to established criteria. As it occurs rarely in children herein we report a case of a 4 year old boy who developed clinical and radiological manifestations of myelitis, 10 days after a recent respiratory tract infection. Diagnostic workup failed to reveal a causative factor. After the administration of corticosteroids a clinical deterioration was observed and intravenous immunoglobulin was administered. Symptoms resolved within a 48-hour period, suggesting an immune-mediated pathogenetic mechanism.
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Affiliation(s)
- E Pavlou
- 2 Department of Pediatrics, Aristotle University of Thessaloniki, "AHEPA'' Hospital
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Pavlou E, Gkampeta A, Evangeliou A, Athanasiadou-Piperopoulou F. Benign epilepsy with centro-temporal spikes (BECTS): relationship between unilateral or bilateral localization of interictal stereotyped focal spikes on EEG and the effectiveness of anti-epileptic medication. Hippokratia 2012; 16:221-224. [PMID: 23935287 PMCID: PMC3738727] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND AND AIM Benign epilepsy with centro-temporal spikes (BECTS) is one of the most frequent epileptic syndromes in children. It is placed among the idiopathic localization-related epilepsies. However, the relationship between unilateral or bilateral localization of interictal stereotyped focal spikes on electroencephalogram (EEG) and the effectiveness of anti-epileptic drugs has not been studied yet. PATIENTS AND METHODS We studied 55 neurodevelopmentally normal children who had been diagnosed with BECTS. Children were subdivided into two groups, based on EEG findings: Group A comprised 30 children with unilateral findings on EEG and Group B 25 children with bilateral findings on EEG. All patients in the present study were started on an anti-epileptic medication after the third seizure (Sodium Valproate, Carbamazepine, Oxcarbazepine) and we studied the response to medications. RESULTS Children with bilateral findings on EEG had the same response to treatment with either Sodium Valproate or Carbamazepine or Oxcarbazepine. Other side, children with unilateral findings on EEG corresponded best to Carbamazepine or Oxcarbazepine. CONCLUSIONS Children diagnosed with BECTS and bilateral discharges on EEG have good response to treatment with either Sodium Valproate or Carbamazepine or Oxcarbazepine.
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Affiliation(s)
- E Pavlou
- 2 Department of Pediatrics, Aristotle University of Thessaloniki, "AHEPA" Hospital
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8
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Hatzipantelis E, Pana Z, Pavlou E, Balakou E, Tsotoulidou V, Papageorgiou T, Tragiannidis A, Athanassiadou F. Epileptic Seizures after Octreotide Administration in a 6.5-Year-Old Female With ALL and L-Asparaginase Associated Pancreatitis: A Possible Drug Interaction. Klin Padiatr 2011; 223:360-3. [DOI: 10.1055/s-0031-1287827] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Pavlou E, Gkampeta A, Tsaleras G, Tsotoulidou V, Athanassiadou F. Chronic inflammatory demyelynating polyradiculoneuropathy in childhood and response to IVIg. Hippokratia 2011; 15:384. [PMID: 24391437 PMCID: PMC3876871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- E Pavlou
- 2 Department of Pediatrics, Aristotle University of Thessaloniki, 'AHEPA' Hospital, Thessaloniki
| | - A Gkampeta
- 2 Department of Pediatrics, Aristotle University of Thessaloniki, 'AHEPA' Hospital, Thessaloniki
| | - G Tsaleras
- 1 Department of Neurology, Clinical Neurophysiology Laboratory, Aristotle University of Thessaloniki, 'AHEPA' Hospital, Thessaloniki
| | - V Tsotoulidou
- 2 Department of Pediatrics, Aristotle University of Thessaloniki, 'AHEPA' Hospital, Thessaloniki
| | - F Athanassiadou
- 2 Department of Pediatrics, Aristotle University of Thessaloniki, 'AHEPA' Hospital, Thessaloniki
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Abstract
To help clarify the hematological picture of patients who may be positive for beta- and delta-globin gene mutations, the following study was carried out. Our aim was to identify the delta-globin gene mutations found in the Greek Cypriot population, their frequencies and the Hb A2 values associated with them. Seventy-four samples were selected from a random sample of 5,030 individuals, and the database of the Molecular Genetics Thalassaemia Department containing diagnostic analyses data was also mined for relevant information. Four novel for Cyprus delta-globin gene mutations: -30 (T-->C), Hb A2-Wrens [delta98(FG5)Val-->Met, GTG-->ATG], IVS-I-2 (T-->C) and Hb A2-Yokoshima [delta25(B7)Gly-->Asp (GGT-->GAT)] were identified. Hb A2-Yialousa [delta27(B9)Ala-->Ser, GCC-->TCC], Hb A2-Yokoshima, Hb A2-Troodos [delta116(G18)Arg-->Cys, CGC-->TGC], Hb A2-Pelendri [delta141(H19)Leu-->Pro, CTG-->CCG], codon 4 [delta4(A1)Thr-->Ile], codon 59 (-A), Hb A2-Wrens, IVS-II-897 (A-->G), IVS-I-2, -55 (T-->C) and -30 bring the total to 11 delta-globin alleles found in the Greek Cypriot population. Hb A2-Yialousa is the most common mutation followed by codon 4, with frequencies of 60.7 and 17.8%, respectively.Hb A2 levels above 1.9% have been found to indicate a significantly reduced possibility for the presence of a delta-globin gene mutation in this population. For Hb A2 levels of 1.7 and 1.8% the possibility of a delta-globin gene mutation rises to 90.9% and reaches 100% for lower Hb A2 levels. The frequency of all the mutant delta-globin chromosomes in the sample is 0.0067 and the carrier frequency is 1.26%.
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Affiliation(s)
- Eleni Pavlou
- Molecular Genetics Thalassaemia Department, The Cyprus Institute of Neurology and Genetics, Nicosia, Cyprus
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Pavlou E, Makris K, Palaiologou A, Tsimpoukidou O, Sarafidou P, Kotouzas A, Stavropoulou M, Katsioula E, Drakopoulos I, Ioannidou E. Biochemical markers of the iron metabolism and their relationship with the inflammatory status in multiple trauma patients. Crit Care 2008. [PMCID: PMC4088563 DOI: 10.1186/cc6413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Pavlou E, Makris K, Palaiologou A, Kaldis B, Vrioni G, Economou E, Eforakopoulou M, Zerva L, Drakopoulos I, Ioannidou E. Decreased apolipoprotein A1 levels correlate with sepsis and adverse outcome among ICU patients. Crit Care 2008. [PMCID: PMC4088572 DOI: 10.1186/cc6422] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Abstract
Children with epilepsy, especially those facing intractable seizures, experience a great impact on the quality of their lives. Effective treatment is essential, and although new anti-epileptic drugs have shown an improved profile of action, still a substantial number of children look for more efficacious ways of treatment that are far away from potential toxicity and ineffectiveness. The ketogenic diet is a dietary therapy for epileptic children based on manipulation of metabolism principles and brain energetics. This regimen aims to produce a controlled ketonaemia through excessive dietary fat intake, little carbohydrates and adequate (for growth) protein. The present paper is a review of previous and current papers regarding the proposed mechanisms of the ketogenic diet’s action, and the efficacy of the regimen on epileptic children. Unfortunately, a few small studies in sample size and duration tried to evaluate the potential risks of this regimen and their results were rather inconclusive. Further research needs to be done in order for the exact mechanism of the ketogenic diet to be clarified which will help to improve the diet’s application, especially for vulnerable epileptic children as far as their growth is concerned.
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Affiliation(s)
- D Papandreou
- Neurology Department, 2nd Pediatric Clinic, Medical School of Aristotelion University of Thessaloniki, Greece.
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14
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Sarafidou P, Stamopoulou S, Demetriou M, Eforakopoulou M, Pavlou E, Stavropoulou M, Ioannidou E. Crit Care 2006; 10:P76. [DOI: 10.1186/cc4423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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15
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Eforakopoulou M, Demetriou M, Palaiologou A, Pavlou E, Stavropoulou M, Katsioula E, Botsis P, Ioannidou E. Crit Care 2006; 10:P129. [DOI: 10.1186/cc4476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Sarafidou P, Pavlou E, Economou E, Demetriou M, Palaiologou A, Stamopoulou S, Eforakopoulou M, Drakopoulos J, Ioannidou E. Crit Care 2006; 10:P467. [DOI: 10.1186/cc4814] [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: 11/10/2022] Open
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Abstract
This study concerns the determination of beta-thalassemia alleles and other hemoglobin variants in 82 patients from Syria. We have characterized 146 chromosomes and found 17 different beta-thalassemia mutations, and one beta-globin chain variant that gives rise to the abnormal Hb S. The eight most common beta-thalassemia mutations were the IVS-I-110 (G-->A), IVS-I-1 (G-->A), codon 5 (-CT), -30 (T-->A), codon 39 (C-->T), IVS-I-6 (T-->C), IVS-II-1 (G-->A), and codon 15 (TGG-->TAG). These mutations accounted for almost 75% of the total beta-thalassemia chromosomes. We identified 34 different genotypes with a high level of homozygosity. The various beta-thalassemia mutations were characterized using gene amplification with specific oligonucleotide primers, restriction enzyme analysis, denaturing gradient gel electrophoresis and direct sequencing. By combining these three approaches we were able to detect mutations in almost 90% of the chromosomes studied. Our findings provide a sound foundation on which to base a preventive program for thalassemia and we believe that the data that we present will facilitate the improvement of medical services such as carrier screening, genetic counseling, and prenatal diagnosis. Furthermore a detailed knowledge of the molecular pathology of beta-thalassemia will strongly improve the prenatal diagnosis services in Syria.
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Affiliation(s)
- K Kyriacou
- The Thalassaemia Laboratory, The Cyprus Institute of Neurology and Genetics Nicosia
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18
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Melissaki A, Paparrigopoulos T, Efthymiou A, Vadala C, Kribeni G, Pavlou E. Acute psychological reactions in relatives of patients treated in the intensive care unit (ICU). Crit Care 2000. [PMCID: PMC3333157 DOI: 10.1186/cc954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wilhelmsen KC, Lynch T, Pavlou E, Higgins M, Nygaard TG. Localization of disinhibition-dementia-parkinsonism-amyotrophy complex to 17q21-22. Am J Hum Genet 1994; 55:1159-65. [PMID: 7977375 PMCID: PMC1918447] [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: 01/28/2023] Open
Abstract
Disinhibition-dementia-parkinsonism-amyotrophy complex (DDPAC) is defined by familial adult-onset behavioral disturbance, followed by frontal lobe dementia, parkinsonism, and amyotrophy in variable proportions. A genetic etiology of DDPAC was suspected because of the familial clustering in family Mo, despite their wide geographic distribution. We have mapped the DDPAC locus to a 12-cM (sex averaged) region between D17S800 and D17S787 on chromosome 17q21-22. The basis for the variability of the clinical findings and pathology in DDPAC is unknown but suggests that the DDPAC locus should be screened as a candidate locus in family studies of conditions with behavioral abnormalities and neurological degeneration.
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Affiliation(s)
- K C Wilhelmsen
- Department of Neurology, Columbia-Presbyterian Medical Center, New York, NY 10032
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