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1.
Heliyon ; 10(13): e32983, 2024 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-39027543

RESUMO

Background: Violence in healthcare is a global issue that healthcare professionals experience. The concerning increase in violent incidents in Turkiye particularly makes it a significant problem to explore by examining the underlying psychological factors. In this sense, this study focuses on the concept of Schadenfreude, the malicious joy of someone else's misfortune, towards doctors, which is an under-researched topic in healthcare violence. Particularly, there is a lack of research on patients' and relatives' perceptions of doctors. Objective: This study aims to determine the level of schadenfreude in Turkish society towards the violence experienced by doctors and to develop a model revealing the underlying causes. Methods: Using a convenience sampling method, we recruited 402 participants, who are not first-degree relatives of healthcare professionals, for this quantitative study. For data collection, we developed a survey instrument to measure the level of schadenfreude and six different psychological factors including empathy, sympathy, anger, aggression, and deservingness. For data analysis, we used structural equation modeling. Results: The results showed that the lower the levels of empathy and sympathy towards doctors were, the higher the levels of both schadenfreude and aggression were. Envy had no significant effect on either schadenfreude or aggression, while deservingness directly affected aggression. The perceptions of participants regarding doctors that they deserve violence increased their aggression levels. Schadenfreude had a positive and significant effect on anger and aggression. Implications: The examination of underlying factors of violence towards doctors points to a lack of mutual understanding between patients and doctors. The results of this study indicate a need for increasing empathy towards health professionals by creating societal awareness of their experiences. Local authorities and healthcare organizations can create environments that bring together the public and health professionals to share their experiences with each other or conduct campaigns to draw public attention to the issue. Moreover, training sessions on effective communication can be offered for health professionals to help improve patient-doctor relationships and healthcare outcomes.

3.
J Coll Physicians Surg Pak ; 31(11): 1296-1302, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34689486

RESUMO

OBJECTIVE: To determine the diagnostic importance of using an exome-based multigene panel in childhood epilepsy. STUDY DESIGN: Observational study. PLACE AND DURATION OF STUDY: Department of Medical Genetics, Diskapi Yildirim Beyazid Training and Research Hospital, from January 2017 to May 2020. METHODOLOGY: The phenotype-genotype relationship was investigated in 35 pediatric patients (aged 18 years or younger) with epilepsy, using a large gene panel comprising 464 epilepsy-related genes. The exome-based panel was used to analyse secondary findings.   Results: The diagnostic yield of the targeted multi-gene panel used was 20% (7/35). The causative genes identified in seven patients (5 boys, 2 girls) were CACNA1E, RELN, PRRT2, TSC1, GABRG2, SCN2A, and SHH. Four of the detected disease-related variants were defined as the novel. Secondary findings in various genes were detected in 19 of the patients. Seven patients with causal genes and the remaining 28 patients were compared in terms of parameters such as gender, mental retardation, developmental retardation, autism, hypotonia, seizure phenotype (only), seizure phenotype (plus), magnetic resonance imaging, degree of kinship of their parents and number of relatives with epilepsy. In addition, patients were evaluated statistically in terms of the same parameters by grouping them according to their gender. There was no statistically significant difference in either study (p >0.05). CONCLUSION: Genetic testing is an important tool for clinicians in determining the diagnosis, management, and treatment strategies of epilepsy patients. Key Words: Epilepsy, Diagnostic yield, Exome-based multigene panel, Next-generation sequencing, Seconder findings.


Assuntos
Epilepsia , Criança , Epilepsia/genética , Feminino , Testes Genéticos , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Masculino , Mutação , Fenótipo , Proteína Reelina , Sequenciamento do Exoma
4.
Neuropediatrics ; 50(1): 51-53, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30440076

RESUMO

Mutations in the human GLUL gene, which encodes the enzyme glutamine synthetase (GS), may cause congenital glutamine synthetase deficiency. The disease was first described in 2005 and only three patients have been reported to date. We report a fourth patient suffering from congenital GS deficiency who was found to have some distinctive clinical findings. The patient was a 30-month-old girl who was referred to us due to developmental delay and seizures which began at 5 months of age. She was seizure free for 5 months with valproic acid and vigabatrin. At presentation, she was found to have microcephaly and hypotonia. Her plasma glutamine concentration was near normal and she had mild hyperammonemia. Cranial magnetic resonance imaging (MRI) showed mild changes. Whole exome sequencing (WES) revealed a homozygous c.121C > T (p.R41C) (p.Arg41Cys) pathogenic variant of the GLUL gene. The diagnosis of this patient underlines the importance of careful evaluation of patients with borderline low glutamine levels. Treatment was begun with L-glutamine and nicotinamide and biochemical improvements have been observed at 6 months of follow-up. The outcome of this patient may provide important data about the effectiveness of glutamine and nicotinamide treatment in patients with congenital GS deficiency.


Assuntos
Erros Inatos do Metabolismo dos Aminoácidos/complicações , Erros Inatos do Metabolismo dos Aminoácidos/diagnóstico por imagem , Glutamato-Amônia Ligase/deficiência , Hipotonia Muscular/diagnóstico por imagem , Hipotonia Muscular/etiologia , Convulsões/diagnóstico por imagem , Convulsões/etiologia , Erros Inatos do Metabolismo dos Aminoácidos/genética , Pré-Escolar , Feminino , Glutamato-Amônia Ligase/genética , Humanos , Hipotonia Muscular/genética , Convulsões/genética
5.
J Clin Neurophysiol ; 31(1): 99-101, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24492453

RESUMO

PURPOSE: To evaluate possible contribution of maturational delay of brain stem in the etiology of breath-holding spells in children using brain stem auditory evoked potentials. METHODS: The study group included children who experienced breath-holding spells. The control group consisted of healthy age- and sex-matched children. Age, gender, type and frequency of spell, hemoglobin, and ferritin levels in study group and brain stem auditory evoked potentials results in both groups were recorded. Study group was statistically compared with control group for brain stem auditory evoked potentials. RESULTS: The mean age of study and control groups was 26.3 ± 14.6 and 28.9 ± 13.9 months, respectively. The III-V and I-V interpeak latencies were significantly prolonged in the study group compared with the control group (2.07 ± 0.2 milliseconds; 1.92 ± 0.13 milliseconds and 4.00 ± 0.27 milliseconds; 3.83 ± 0.19 milliseconds; P = 0.009 and P = 0.03, respectively). At the same time, III-V and I-V interpeak latencies of patients without anemia in the study group compared with those of control group were significantly prolonged (2.09 ± 0.24 milliseconds; 1.92 ± 0.13 milliseconds and 4.04 ± 0.28 milliseconds; 3.83 ± 0.19 milliseconds; P = 0.007 and P = 0.01, respectively). CONCLUSIONS: Our results consider that maturational delay in myelination of brain stem may have a role in the etiology of breath-holding spells in children.


Assuntos
Tronco Encefálico/patologia , Suspensão da Respiração , Potenciais Evocados Auditivos do Tronco Encefálico/fisiologia , Bainha de Mielina/patologia , Pré-Escolar , Feminino , Humanos , Lactente , Masculino
6.
Neural Regen Res ; 8(10): 955-8, 2013 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-25206388

RESUMO

Dravet syndrome is a rare epileptic encephalopathy characterized by frequent seizures beginning in the first year of life and behavioral disorders. Mutations in the sodium channel α1 subunit gene are the main cause of this disease. We report two patients with refractory seizures and psychomotor retardation in whom the final diagnosis was Dravet syndrome with confirmed mutations in the sodium channel α1 subunit gene. The mutation identified in the second patient was a novel frame shift mutation, which resulted from the deletion of five nucleotides in exon 24.

7.
Epilepsy Behav ; 25(1): 50-3, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22980081

RESUMO

We report a five-year-old girl presenting with dysphagia, dysarthria, drooling, and generalized tonic convulsions in whom the final diagnosis was acquired epileptiform opercular syndrome. Levetiracetam monotherapy at a dosage of 40 mg/kg/day improved the clinical findings, and seizures were controlled at the end of the first month of treatment. Six months after the initial diagnosis, she presented with speech deterioration and dysarthria. At this time, although sleep and awake electroencephalography (EEG) were normal, FDG-PET showed hypometabolic and hypermetabolic regions in the anterior/inferior and anterior regions of the right frontal lobe, respectively. By increasing before levetiracetam dosage to 50 mg/kg/day, the clinical findings resolved and the patient is still seizure free. Acquired epileptiform opercular syndrome is a rare epileptic disorder in which the seizures are resistant to conventional antiepileptic drugs. Levetiracetam may be an effective antiepileptic drug in controlling seizures and other clinical findings in acquired opercular epileptiform syndrome. Hypometabolic and hypermetabolic regions in FDG-PET study may be due to ongoing seizure activity or impaired glucose metabolism in this disorder.


Assuntos
Anticonvulsivantes/uso terapêutico , Transtornos de Deglutição , Disartria , Epilepsia Generalizada , Piracetam/análogos & derivados , Sialorreia , Pré-Escolar , Transtornos de Deglutição/complicações , Transtornos de Deglutição/diagnóstico por imagem , Transtornos de Deglutição/tratamento farmacológico , Disartria/complicações , Disartria/diagnóstico por imagem , Disartria/tratamento farmacológico , Eletroencefalografia , Epilepsia Generalizada/complicações , Epilepsia Generalizada/diagnóstico por imagem , Epilepsia Generalizada/tratamento farmacológico , Feminino , Fluordesoxiglucose F18 , Humanos , Levetiracetam , Piracetam/uso terapêutico , Tomografia por Emissão de Pósitrons , Sialorreia/complicações , Sialorreia/diagnóstico por imagem , Sialorreia/tratamento farmacológico
8.
Brain Dev ; 34(9): 792-5, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22209335

RESUMO

Ring chromosome 21 syndrome is a rare clinical condition. Most of the patients have a recognizable phenotype and multisystem involvement is described. Structural neurologic anomalies have also been described, but waddling gait due to lower motor neuron involvement has not been previously reported in association with ring 21.


Assuntos
Transtornos Neurológicos da Marcha/complicações , Cromossomos em Anel , Transtornos Cromossômicos/complicações , Transtornos Cromossômicos/genética , Cromossomos Humanos Par 21 , Transtornos Neurológicos da Marcha/genética , Transtornos Neurológicos da Marcha/patologia , Humanos , Lactente , Cariotipagem , Masculino
9.
Childs Nerv Syst ; 28(2): 283-6, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21928064

RESUMO

PURPOSE: Cerebral palsy is one of the most common reasons of osteopenia in childhood. Patients have a significantly decreased bone mineral density, and painful fractures with minor traumas are common. Biphosphonates in the treatment of childhood osteoporosis are increasingly being used. This study aimed to evaluate the efficacy of oral alendronate treatment in children with cerebral palsy. METHODS: Twenty-six children (16 boys and 10 girls) aged 3 to 17 years who had quadriplegic cerebral palsy and osteopenia were included in the study. The patients received alendronate (1 mg/kg/week), calcium (600 mg/day), and vitamin D(3) (400 U/day) over a year. A complete blood count, kidney and liver functional tests, plasma calcium, phosphate and alkaline phosphatase levels, and lumbar vertebral bone mineral density were measured before and after treatment. RESULTS: Compared with pretreatment values, bone mineral density, serum calcium, and phosphate levels of the patients statistically increased and alkaline phosphatase levels decreased after treatment. No patient needed to interrupt treatment because of side effects. CONCLUSIONS: Oral alendronate at a dose of 1 mg/kg/week for the treatment of osteopenia in children with cerebral palsy was found to be safe and effective.


Assuntos
Alendronato/uso terapêutico , Conservadores da Densidade Óssea/uso terapêutico , Doenças Ósseas Metabólicas/tratamento farmacológico , Doenças Ósseas Metabólicas/etiologia , Paralisia Cerebral/complicações , Absorciometria de Fóton , Adolescente , Densidade Óssea/efeitos dos fármacos , Cálcio/uso terapêutico , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Vitamina D/uso terapêutico
10.
Pediatr Neurol ; 41(6): 461-3, 2009 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19931172

RESUMO

Vincristine is a vinca alkaloid used in combination with other agents in the treatment of solid tumors, lymphoma, and leukemia, as well as for idiopathic thrombocytopenic purpura and autoimmune hemolytic anemia. A dose-limiting complication of vinca alkaloids is neurotoxicity. Vincristine is the oldest and also the most neurotoxic agent in this group. Described here is the case of a 4-year-old girl with unilateral palpebral ptosis. She has been diagnosed with precursor B-cell acute lymphoblastic leukemia. Ptosis was noted on the 45th day of therapy, and the last vincristine was administered on the 28th day of protocol 1. Vincristine-induced unilateral palpebral ptosis is a novel finding. Experience with this case suggests conservative treatment, with periodic examination, especially if ptosis is mild.


Assuntos
Antineoplásicos Fitogênicos/efeitos adversos , Blefaroptose/induzido quimicamente , Lateralidade Funcional , Vincristina/efeitos adversos , Antineoplásicos Fitogênicos/uso terapêutico , Blefaroptose/patologia , Pré-Escolar , Feminino , Humanos , Leucemia-Linfoma Linfoblástico de Células Precursoras B/tratamento farmacológico , Fatores de Tempo , Resultado do Tratamento , Vincristina/uso terapêutico
11.
J Natl Med Assoc ; 101(3): 273-5, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19331262

RESUMO

Joubert syndrome is a rare autosomal recessive disease characterized by hypotonia, ataxia, episodic hyperpnea, psychomotor retardation, abnormal ocular movements, cerebellar vermian hypoplasia, and molar tooth sign on magnetic resonance imaging. Neuroleptic malignant syndrome is an uncommon and potentially fatal idiosynchratic reaction of antipsychotic drugs, in which the clinical scenario encompass muscular rigidity, hyperthermia, autonomic dysfunction, altered consciousness, high creatinine phosphokinase levels, and leukocytosis. This report describes a case of neuroleptic malignant syndrome due to risperidone in a child with Joubert syndrome.


Assuntos
Anormalidades Múltiplas/tratamento farmacológico , Antipsicóticos/efeitos adversos , Antagonistas de Dopamina/efeitos adversos , Síndrome Maligna Neuroléptica , Risperidona/efeitos adversos , Antagonistas da Serotonina/efeitos adversos , Anormalidades Múltiplas/fisiopatologia , Acetaminofen/uso terapêutico , Adolescente , Analgésicos não Narcóticos/uso terapêutico , Biperideno/uso terapêutico , Crioterapia , Humanos , Masculino , Antagonistas Muscarínicos/uso terapêutico
12.
Artigo em Inglês | MEDLINE | ID: mdl-19213279

RESUMO

Benign recurrent abducens nerve palsy is rare. Twenty-three cases in children have been reported in the literature and many of these cases followed immunization or were associated with viral illness. Most of the reported patients share the following features: spontaneous recovery within 6 months, ipsilateral recurrence, and painless palsy. The authors describe a Turkish child with recurrent abducens nerve palsy with no obvious etiology.


Assuntos
Doenças do Nervo Abducente/complicações , Doenças do Nervo Abducente/diagnóstico , Doenças do Nervo Abducente/terapia , Esotropia/diagnóstico , Esotropia/etiologia , Esotropia/terapia , Feminino , Humanos , Lactente , Recidiva , Privação Sensorial
13.
Brain Dev ; 31(6): 405-10, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18814980

RESUMO

Valproic acid (VPA) is a widely used and well-tolerable antiepileptic drug in epileptic patients. However, VPA has many side effects dose-dependent or non-dose-dependent. It is reported that VPA treatment may lead to biotin deficiency and low serum and liver tissue biotinidase enzyme activity (BEA). Major clinical manifestations in biotin deficiency are seborrheic dermatitis, dry skin, fine and brittle hair, and alopecia. We aimed to investigate the effects of biotin supplementation on serum and liver tissue BEA and alopecia during VPA therapy. Rats were randomly divided into 4 groups, each consisted of 15 rats (VPA-B1, VPA-B2, VPA, and control). Except the control group, all groups were administrated VPA dose of 600 mg/kg/d per oral (PO) for 60 days with 12h intervals two divided doses. VPA-B1 was administrated biotin dose of 6 mg/kg/d and VPA-B2 was administrated biotin dose of 0.6 mg/kg/d. In the third week of the study, we determined alopecia in the study groups. Alopecia was seen in the subjects of 13.3% of VPA-B1 (n=2), 13.3% of VPA-B2 (n=2), and 40% of VPA (n=6). But statistical significant effect on alopecia by biotin supplementation was not able to be determined between the study groups. In the control group, alopecia was not observed. The ratios of alopecia in the study groups were statistically higher than the control group (p=0.028). Itchiness was more obvious in the study groups compared with the control group. Serum biotin levels of the biotin supplemented groups (VPA-B1 and VPA-B2) were higher than the other groups (VPA and control group). Serum biotin levels of the VPA group were lower than the control group. There were significant decreases in the levels of serum and liver tissue BEA of the study groups compared with the control group. In conclusion we showed that VPA usage reduced the serum and liver tissue BEA and impaired the biotin utilization by affecting the liver. Partial biotinidase deficiency may lead to alopecia. It might be prevented by biotin supplementation in the patients receiving VPA therapy. We considered that further studies are necessary to find out the effective and safe biotin dose.


Assuntos
Alopecia/tratamento farmacológico , Deficiência de Vitaminas/tratamento farmacológico , Biotina/deficiência , Biotina/farmacologia , Deficiência de Biotinidase/tratamento farmacológico , Ácido Valproico/toxicidade , Alopecia/induzido quimicamente , Alopecia/metabolismo , Animais , Anticonvulsivantes/toxicidade , Deficiência de Vitaminas/induzido quimicamente , Deficiência de Vitaminas/complicações , Biotina/uso terapêutico , Biotinidase/sangue , Biotinidase/efeitos dos fármacos , Deficiência de Biotinidase/induzido quimicamente , Deficiência de Biotinidase/complicações , Suplementos Nutricionais , Relação Dose-Resposta a Droga , Regulação para Baixo/efeitos dos fármacos , Regulação para Baixo/fisiologia , Esquema de Medicação , Epilepsia/tratamento farmacológico , Fígado/efeitos dos fármacos , Fígado/enzimologia , Fígado/fisiopatologia , Masculino , Ratos , Ratos Wistar , Resultado do Tratamento
15.
Prog Neuropsychopharmacol Biol Psychiatry ; 32(3): 844-8, 2008 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-18234410

RESUMO

Homocysteine (Hcy) is a sulfur-containing amino acid involved in methionine metabolism. Elevated plasma Hcy concentration is a possible risk factor for vascular disease. Folate and vitamin B-12 are vitamins that are necessary for remethylization of Hcy to methionine. The methylenetetrahydrofolate reductase (MTHFR) is the key enzyme in remethylation of Hcy to methionine and supplies the required 5-methyltetrahydrofolate as the methyl donor for this reaction. It is well known that some antiepileptic drugs (AED) can lead to hyperhomocysteinemia by affecting the levels of folate and vitamin B-12. The C677T variant of MTHFR gene can also lead to hyperhomocysteinemia particularly when serum folate level is decreased. In this study, we investigated the levels of serum folate, vitamin B-12 and Hcy in epileptic patients receiving carbamazepine (CBZ) or valproic acid (VPA) as monotherapy, and we also evaluated the probable contribution of the C677T variant of MTHFR gene in hyperhomocysteinemia. A total of 93 patients with idiopathic epilepsy receiving CBZ or VPA as monotherapy were included in this study. CBZ and VPA groups consisted of 29 and 64 patients, respectively. The control group comprised 62 healthy children. We measured serum folate, vitamin B-12 and Hcy levels in each group. We found that mean serum folate level was statistically lower and mean Hcy level was higher in epileptic patients receiving CBZ or VPA when compared with those of controls'. We also determined the C677T variants of MTHFR gene (as normal, heterozygote or homozygote) in epileptic patients. We compared the variant groups for serum folate, vitamin B-12 and Hcy levels and found no significant differences among them. In conclusion, C677T variants of MTHFR gene have no contribution in hyperhomocysteinemia in epileptic patients receiving CBZ or VPA.


Assuntos
Anticonvulsivantes/efeitos adversos , Carbamazepina/efeitos adversos , Hiper-Homocisteinemia/induzido quimicamente , Hiper-Homocisteinemia/genética , Metilenotetra-Hidrofolato Redutase (NADPH2)/genética , Polimorfismo Genético/genética , Ácido Valproico/efeitos adversos , Adolescente , Análise de Variância , Criança , Cromatografia Líquida de Alta Pressão , Eletroquímica , Epilepsia/tratamento farmacológico , Feminino , Ácido Fólico/sangue , Homocisteína/sangue , Humanos , Hiper-Homocisteinemia/sangue , Masculino , Vitamina B 12/sangue
16.
Pediatr Int ; 50(5): 620-3, 2008 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19261106

RESUMO

BACKGROUND: Headache is a common problem in the pediatric population. The purpose of the present study was to evaluate visual evoked potentials (VEP) and brainstem auditory evoked potentials (BAEP) in children with headache. METHODS: Thirty-seven children fulfilling the International Headache Society Criteria for a diagnosis of migraine, 35 children with tension-type headache and 40 healthy children (control group) were enrolled in the study. RESULTS: The mean age of patients and controls was 10.4 years. P100 latency and amplitudes of migraine patients were significantly higher than children with tension-type headache and control subjects. Children with tension-type headache also had higher P100 latency and amplitude values than control subjects but there was no statistical difference. BAEP responses were similar between all groups. CONCLUSION: Measurement of VEP latency and amplitude is a valuable and reliable test for the diagnosis of migraine and can be used safely in childhood.


Assuntos
Potenciais Evocados Auditivos do Tronco Encefálico , Potenciais Evocados Visuais , Transtornos de Enxaqueca/diagnóstico , Cefaleia do Tipo Tensional/diagnóstico , Adolescente , Biomarcadores , Estudos de Casos e Controles , Criança , Diagnóstico Diferencial , Feminino , Humanos , Masculino
17.
Pediatr Transplant ; 11(7): 792-5, 2007 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17910659

RESUMO

GS is an uncommon autosomal recessive disorder characterized by pigmentary dilution of the skin and hair and in most patients by abnormal regulation of the immune system. Childhood melanoma is rare in the pediatric population. The best prognosis is achieved with early diagnosis and definitive surgical excision of melanoma. We report a case of a patient with GS type II and melanoma who was successfully treated by allogeneic bone marrow transplantation and surgical excision of the melanoma.


Assuntos
Transplante de Medula Óssea/efeitos adversos , Síndromes de Imunodeficiência/cirurgia , Melanoma/patologia , Neoplasias Cutâneas/patologia , Adolescente , Feminino , Humanos , Melanoma/cirurgia , Transtornos da Pigmentação/cirurgia , Neoplasias Cutâneas/cirurgia , Transplante Homólogo , Resultado do Tratamento
18.
J Child Neurol ; 21(12): 1082-4, 2006 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-17156705

RESUMO

Aicardi syndrome is a cerebroretinal disorder consisting of a heterogeneous spectrum of clinical findings that includes the triad of infantile spasms, agenesis of the corpus callosum, and chorioretinal lacunae. This report describes a 6-month-old girl who has all of the essential features suggestive of Aicardi syndrome, as well as a pineal gland cyst and ventricular septal defect. Although the characteristic features of Aicardi syndrome have been described, its association with pineal gland cyst and ventricular septal defect has not been reported in the literature.


Assuntos
Cistos do Sistema Nervoso Central/patologia , Comunicação Interventricular/patologia , Malformações do Sistema Nervoso/complicações , Malformações do Sistema Nervoso/patologia , Glândula Pineal/patologia , Agenesia do Corpo Caloso , Cistos do Sistema Nervoso Central/complicações , Cistos do Sistema Nervoso Central/fisiopatologia , Corioide/anormalidades , Comorbidade , Anormalidades do Olho/complicações , Anormalidades do Olho/patologia , Anormalidades do Olho/fisiopatologia , Feminino , Comunicação Interventricular/complicações , Comunicação Interventricular/fisiopatologia , Humanos , Lactente , Imageamento por Ressonância Magnética , Malformações do Sistema Nervoso/fisiopatologia , Glândula Pineal/fisiopatologia , Retina/anormalidades , Espasmos Infantis/complicações , Espasmos Infantis/patologia , Espasmos Infantis/fisiopatologia , Síndrome
19.
Brain Dev ; 28(8): 515-20, 2006 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-16682156

RESUMO

Valproic acid (VPA) is an antiepileptic drug widely used and well-tolerated by most of patients. Its non-dose-dependent side effects seen mostly are the temporary gastrointestinal disturbances including anorexia and nausea, and hepatoxicity. As to its dose-dependent side effects are the weight loss, tremor, skin eruption and the alopecia. In this study we aimed to put forward the biotinidase deficiency considered as a possible cause of alopecia in the rats administered with valproic acid, and the correlation between liver and serum biotinidase enzyme activities (BEA) and transaminases, albumin and serum valproic acid levels. In our study, 4 groups of which one of them was a control group, each consisting of 15 male Wistar rats was organized. 200, 400, and 600 mg/kg/day of VPA, and distilled water, two divided doses per day, were administered per orally to VPA-1, VPA-2, VPA-3, and control group, respectively, in 60 days. Their serum and liver biotinidase enzyme activities, serum AST, ALT, albumin, and valproic acid levels were measured. Alopecia was seen in the subjects of 6.6% of VPA-1, 13.3% of VPA-2, and 26.6% of VPA-3. Significant difference in the liver tissues BEA was noted only between VPA-3 and the control group. Reductions were observed both in the liver tissues BEA and the serum BEA levels, which are inversely proportional to the VPA doses. A positive correlation between the liver biotinidase enzyme activities and the serum valproic acid levels, and the negative correlation between the liver tissues biotinidase activities and the serum valproic acid levels were noted, respectively. As a conclusion, the partial alopecia which is an initial symptom of reduced biotinidase activity may also be created depending on the reduction of biotinidase activity during valproic acid therapy. The alopecia which may further be observed in the patients receiving valproic acid therapy may be prevented by means of administration of biotin in a dose of 10 mg/day.


Assuntos
Anticonvulsivantes/administração & dosagem , Biotinidase/metabolismo , Fígado/efeitos dos fármacos , Soro/efeitos dos fármacos , Ácido Valproico/administração & dosagem , Alopecia/induzido quimicamente , Análise de Variância , Animais , Relação Dose-Resposta a Droga , Esquema de Medicação , Fígado/enzimologia , Masculino , Ratos , Ratos Wistar , Soro/enzimologia , Transaminases/metabolismo , Ácido Valproico/sangue
20.
Prenat Diagn ; 26(5): 449-53, 2006 May.
Artigo em Inglês | MEDLINE | ID: mdl-16532515

RESUMO

BACKGROUND: Prenatal diagnosis of autosomal recessive primary microcephaly (MCPH) is hampered by the fact that fetal head size is normal until late in the pregnancy, and by the vast genetic heterogeneity and impractically large size of the currently known genes for the disorder. OBJECTIVE: Combine DNA and morphometric approaches into earlier prenatal diagnosis of MCPH. METHODS: We evaluated two consanguineous families affected with MCPH with an ongoing, second-trimester pregnancy. Fetal heads were evaluated by serial ultrasound scannings, and DNA was sampled from parents, probands, and fetal cells, for a focused mutation search and linkage analysis. RESULTS: DNA linkage analysis and fetal head morphometry were concordant in one family and probably concordant in the second, showing a healthy fetus and an affected fetus, respectively. CONCLUSIONS: Cautious confrontation of linkage and morphometric data in selected cases of MCPH from consanguineous families may decrease false-positive and false-negative errors of second-trimester prenatal diagnosis.


Assuntos
Consanguinidade , Ligação Genética , Microcefalia/diagnóstico por imagem , Microcefalia/genética , Ultrassonografia Pré-Natal , Adulto , Criança , Saúde da Família , Feminino , Humanos , Masculino , Repetições de Microssatélites , Linhagem , Gravidez , Segundo Trimestre da Gravidez
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