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1.
Rev. esp. cir. ortop. traumatol. (Ed. impr.) ; 68(1): 57-63, Ene-Feb, 2024. ilus, tab
Artículo en Inglés | IBECS | ID: ibc-229675

RESUMEN

Introduction and objectives: Children with cerebral palsy (CP) experience decreased health-related quality of life (HRQOL). This study aimed to assess the HRQOL of children with CP before versus after a combined program of minimally invasive selective percutaneous myofascial lengthening (SPML) and functional physiotherapy. Material and methods: A single-group pre–posttest design was used. Twenty-six middle childhood children with spastic CP, aged 5–7 years, with Gross Motor Function Classification System levels II–IV underwent SPML surgery and 9 months of postoperative functional strength training therapy. The proxy version of the DISABKIDS-Smiley questionnaire was completed by one parent of each child. Dependent t-tests were used to compare mean pre- and post-measurement scores. Results: After the 9-month intervention, the children with CP had significantly higher quality of life scores (mean difference, 11.06±9.05; 95% confidence interval [CI], 7.40–14.71; p<0.001). Conclusions: This study demonstrated that children with CP had better HRQOL after a combined program of minimally invasive SPML surgery and functional physiotherapy (ACTRN12618001535268).(AU)


Introducción y objetivos: Los niños con parálisis cerebral (PC) experimentan una disminución de la calidad de vida relacionada con la salud (CVRS). El objetivo de este estudio fue evaluar la CVRS de niños con PC antes y después de un programa combinado de alargamiento miofascial percutáneo selectivo (SPML) y fisioterapia funcional. Material y métodos: Se utilizó un diseño de un solo grupo con pretest y postest. Veintiséis niños de mediana edad (5 a 7 años) con PC espástica, niveles II-IV del sistema de la clasificación de la función motora gruesa se sometieron a cirugía SPML y fisioterapia de funcional posquirúrgica durante 9 meses. La versión proxy del cuestionario DISABKIDS-Smiley fue completada por uno de los padres de cada niño. Se realizaron pruebas t dependientes para comparar las puntuaciones medias previas y posteriores a la medición. Resultados: Después de 9 meses de intervención, los niños con PC tenían puntuaciones de calidad de vida significativamente más altas desde el punto de vista estadístico (diferencia de medias: 11,06±9,05; intervalo de confianza del 95%: 7,40-14,71; p <0,001). Conclusión: Este estudio demostró que los niños con PC presentaron una mejor CVRS después de un programa combinado de cirugía SPML y fisioterapia funcional.(AU)


Asunto(s)
Humanos , Masculino , Femenino , Niño , Parálisis Cerebral , Calidad de Vida , Alargamiento Óseo , Modalidades de Fisioterapia , Traumatología , Ortopedia , Procedimientos Ortopédicos , Pediatría
2.
Rev. esp. cir. ortop. traumatol. (Ed. impr.) ; 68(1): T57-T63, Ene-Feb, 2024. ilus, tab
Artículo en Español | IBECS | ID: ibc-229676

RESUMEN

Introduction and objectives: Children with cerebral palsy (CP) experience decreased health-related quality of life (HRQOL). This study aimed to assess the HRQOL of children with CP before versus after a combined program of minimally invasive selective percutaneous myofascial lengthening (SPML) and functional physiotherapy. Material and methods: A single-group pre–posttest design was used. Twenty-six middle childhood children with spastic CP, aged 5–7 years, with Gross Motor Function Classification System levels II–IV underwent SPML surgery and 9 months of postoperative functional strength training therapy. The proxy version of the DISABKIDS-Smiley questionnaire was completed by one parent of each child. Dependent t-tests were used to compare mean pre- and post-measurement scores. Results: After the 9-month intervention, the children with CP had significantly higher quality of life scores (mean difference, 11.06±9.05; 95% confidence interval [CI], 7.40–14.71; p<0.001). Conclusions: This study demonstrated that children with CP had better HRQOL after a combined program of minimally invasive SPML surgery and functional physiotherapy (ACTRN12618001535268).(AU)


Introducción y objetivos: Los niños con parálisis cerebral (PC) experimentan una disminución de la calidad de vida relacionada con la salud (CVRS). El objetivo de este estudio fue evaluar la CVRS de niños con PC antes y después de un programa combinado de alargamiento miofascial percutáneo selectivo (SPML) y fisioterapia funcional. Material y métodos: Se utilizó un diseño de un solo grupo con pretest y postest. Veintiséis niños de mediana edad (5 a 7 años) con PC espástica, niveles II-IV del sistema de la clasificación de la función motora gruesa se sometieron a cirugía SPML y fisioterapia de funcional posquirúrgica durante 9 meses. La versión proxy del cuestionario DISABKIDS-Smiley fue completada por uno de los padres de cada niño. Se realizaron pruebas t dependientes para comparar las puntuaciones medias previas y posteriores a la medición. Resultados: Después de 9 meses de intervención, los niños con PC tenían puntuaciones de calidad de vida significativamente más altas desde el punto de vista estadístico (diferencia de medias: 11,06±9,05; intervalo de confianza del 95%: 7,40-14,71; p <0,001). Conclusión: Este estudio demostró que los niños con PC presentaron una mejor CVRS después de un programa combinado de cirugía SPML y fisioterapia funcional.(AU)


Asunto(s)
Humanos , Masculino , Femenino , Niño , Parálisis Cerebral , Calidad de Vida , Alargamiento Óseo , Modalidades de Fisioterapia , Traumatología , Ortopedia , Procedimientos Ortopédicos , Pediatría
3.
Rev Esp Cir Ortop Traumatol ; 68(1): 57-63, 2024.
Artículo en Inglés, Español | MEDLINE | ID: mdl-37689354

RESUMEN

INTRODUCTION AND OBJECTIVES: Children with cerebral palsy (CP) experience decreased health-related quality of life (HRQOL). This study aimed to assess the HRQOL of children with CP before versus after a combined program of minimally invasive selective percutaneous myofascial lengthening (SPML) and functional physiotherapy. MATERIAL AND METHODS: A single-group pre-posttest design was used. Twenty-six middle childhood children with spastic CP, aged 5-7 years, with Gross Motor Function Classification System levels II-IV underwent SPML surgery and 9 months of postoperative functional strength training therapy. The proxy version of the DISABKIDS-Smiley questionnaire was completed by one parent of each child. Dependent t-tests were used to compare mean pre- and post-measurement scores. RESULTS: After the 9-month intervention, the children with CP had significantly higher quality of life scores (mean difference, 11.06±9.05; 95% confidence interval [CI], 7.40-14.71; p<0.001). CONCLUSIONS: This study demonstrated that children with CP had better HRQOL after a combined program of minimally invasive SPML surgery and functional physiotherapy (ACTRN12618001535268).

4.
Rev Esp Cir Ortop Traumatol ; 68(1): T57-T63, 2024.
Artículo en Inglés, Español | MEDLINE | ID: mdl-37995817

RESUMEN

INTRODUCTION AND OBJECTIVES: Children with cerebral palsy (CP) experience decreased health-related quality of life (HRQOL). This study aimed to assess the HRQOL of children with CP before versus after a combined program of minimally invasive selective percutaneous myofascial lengthening (SPML) and functional physiotherapy. MATERIAL AND METHODS: A single-group pre-posttest design was used. Twenty-six middle childhood children with spastic CP, aged 5-7 years, with Gross Motor Function Classification System levels II-IV underwent SPML surgery and 9 months of postoperative functional strength training therapy. The proxy version of the DISABKIDS-Smiley questionnaire was completed by one parent of each child. Dependent t-tests were used to compare mean pre- and post-measurement scores. RESULTS: After the 9-month intervention, the children with CP had significantly higher quality of life scores (mean difference, 11.06 ± 9.05; 95% confidence interval [CI], 7.40-14.71; p < 0.001). CONCLUSIONS: This study demonstrated that children with CP had better HRQOL after a combined program of minimally invasive SPML surgery and functional physiotherapy (ACTRN12618001535268).

5.
JIMD Rep ; 18: 85-92, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25256449

RESUMEN

Glutaric acidemia type I (GA-I) is a treatable autosomal recessive disorder of lysine, hydroxylysine, and tryptophan metabolism caused by glutaryl-CoA dehydrogenase (GCDH) deficiency. Presentation and progression of disease are variable ranging from asymptomatic carrier state to catastrophic encephalopathy. GA-I usually presents before age 18 months, usually triggered by childhood infection, with mild or severe acute encephalopathy, striatal degeneration, and movement disorder, most often acute dystonia. At a presymptomatic stage diagnosis is suggested clinically by macrocephaly, radiologically by widened Sylvian fissures and biochemically by the presence of excess 3-hydroxyglutaric acid and glutaric acid in urine. Treatment consists of lysine-restricted diet and carnitine supplementation, specific diet restrictions, as well as symptomatic and anticatabolic treatment of intercurrent illness. Presymptomatic diagnosis and treatment are essential to prognosis. We report the case of 16-year-old macrocephalic female with late-onset GA-I and unusual paucisymptomatic presentation with fainting after exercise and widespread white matter signal changes at MRI. She was compound heterozygote for a novel mutation (IVS10-2A>G) affecting splicing at GCDH and a common missense mutation (c. 1240C>T; p.Arg402Trp, R402W). Interestingly, the site of the novel mutation is the nucleotide position of a common mutation found almost exclusively in patients of Chinese/Taiwanese origin (IVS10-2A>C).

6.
Eur J Neurol ; 21(1): 118-23, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24118208

RESUMEN

BACKGROUND AND PURPOSE: To evaluate prospectively the changes and possible associations in lipid and thyroid profiles in children treated with oxcarbazepine (OXC) monotherapy. METHODS: Serum total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), triglycerides (TGs), lipoprotein (a) [Lp(a)], free thyroxine (FT4), free triiodothyronine (FT3), thyrotropin (TSH) and gamma-glutamyltransferase (GGT) concentrations were measured in 23 children with epilepsy, before and at 8 and 18 months of OXC monotherapy. RESULTS: Total cholesterol was significantly increased at 8 months (P = 0.033), whereas LDL-C was significantly increased at 8 and 18 months (P < 0.001 and P = 0.004, respectively) of treatment. Lp(a) was significantly increased at 8 months (P = 0.042) and borderline significantly increased at 18 months (P = 0.050) of treatment. FT4 was significantly decreased at 8 and 18 months (P < 0.001 and P = 0.002, respectively), and TSH levels were significantly increased at 8 and 18 months (P = 0.002 and P = 0.001, respectively) of OXC monotherapy. GGT levels were significantly increased at 8 and 18 months (P < 0.001) of treatment. There were no significant alterations in HDL-C, TGs and FT3 levels during the study. Significant positive correlations were found between GGT and LDL-C levels at 8 (r = 0.468, P = 0.024) and 18 months (r = 0.498, P = 0.016), and between TSH and TC at 18 months (r = 0.508, P = 0.013) of treatment. CONCLUSIONS: OXC monotherapy may cause significant and persistent alterations in lipid and thyroid profiles in children with epilepsy. The increase in LDL-C and TC levels may be associated with liver enzymes induction and thyroid dysfunction. Further long-term prospective studies are required to confirm these findings and to determine their clinical significance.


Asunto(s)
Anticonvulsivantes/efectos adversos , Carbamazepina/análogos & derivados , Epilepsia/sangre , Lípidos/sangre , Hormonas Tiroideas/sangre , Adolescente , Carbamazepina/efectos adversos , Niño , Preescolar , Femenino , Humanos , Inmunoensayo , Estudios Longitudinales , Mediciones Luminiscentes , Masculino , Oxcarbazepina , Estudios Prospectivos
7.
Clin Genet ; 84(6): 566-71, 2013 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-23347225

RESUMEN

Pelizaeus-Merzbacher disease (PMD) is caused in most cases by either duplications or point mutations in the PLP1 gene. This disease, a dysmyelinating disorder affecting mainly the central nervous system, has a wide clinical spectrum and its causing mutations act through different molecular mechanisms. Eighty-eight male patients with leukodystrophy were studied. PLP1 gene analysis was performed by the Multiplex Ligation-dependent Probe Amplification technique and DNA sequencing, and, in duplicated cases of PLP1, gene dosage was completed by using array-CGH. We have identified 21 patients with mutations in the PLP1 gene, including duplications, short and large deletions and several point mutations in our cohort. A customized array-CGH at the Xq22.2 area identified several complex rearrangements within the PLP1 gene region. Mutations found in the PLP1 gene are the cause of PMD in around 20% of the patients in this series.


Asunto(s)
Mutación , Proteína Proteolipídica de la Mielina/genética , Enfermedad de Pelizaeus-Merzbacher/genética , Niño , Preescolar , Hibridación Genómica Comparativa , Genotipo , Humanos , Lactante , Masculino , Enfermedad de Pelizaeus-Merzbacher/diagnóstico , Fenotipo
8.
Neurology ; 77(13): 1287-94, 2011 Sep 27.
Artículo en Inglés | MEDLINE | ID: mdl-21917775

RESUMEN

OBJECTIVE: To characterize Alexander disease (AxD) phenotypes and determine correlations with age at onset (AAO) and genetic mutation. AxD is an astrogliopathy usually characterized on MRI by leukodystrophy and caused by glial fibrillary acidic protein (GFAP) mutations. METHODS: We present 30 new cases of AxD and reviewed 185 previously reported cases. We conducted Wilcoxon rank sum tests to identify variables scaling with AAO, survival analysis to identify predictors of mortality, and χ(2) tests to assess the effects of common GFAP mutations. Finally, we performed latent class analysis (LCA) to statistically define AxD subtypes. RESULTS: LCA identified 2 classes of AxD. Type I is characterized by early onset, seizures, macrocephaly, motor delay, encephalopathy, failure to thrive, paroxysmal deterioration, and typical MRI features. Type II is characterized by later onset, autonomic dysfunction, ocular movement abnormalities, bulbar symptoms, and atypical MRI features. Survival analysis predicted a nearly 2-fold increase in mortality among patients with type I AxD relative to those with type II. R79 and R239 GFAP mutations were most common (16.6% and 20.3% of all cases, respectively). These common mutations predicted distinct clinical outcomes, with R239 predicting the most aggressive course. CONCLUSIONS: AAO and the GFAP mutation site are important clinical predictors in AxD, with clear correlations to defined patterns of phenotypic expression. We propose revised AxD subtypes, type I and type II, based on analysis of statistically defined patient groups.


Asunto(s)
Enfermedad de Alexander/clasificación , Enfermedad de Alexander/genética , Proteína Ácida Fibrilar de la Glía/genética , Mutación/genética , Adolescente , Adulto , Factores de Edad , Edad de Inicio , Enfermedad de Alexander/mortalidad , Teorema de Bayes , Análisis Mutacional de ADN , Exones/genética , Femenino , Humanos , Modelos Logísticos , Masculino , Estudios Retrospectivos , Análisis de Supervivencia , Adulto Joven
10.
Brain Res ; 1344: 62-76, 2010 Jul 16.
Artículo en Inglés | MEDLINE | ID: mdl-20471376

RESUMEN

We investigated natural and lesion-induced apoptosis in the developing rat dorsal lateral geniculate nucleus (dLGN). These lesions involved: i) monocular enucleation, and ii) unilateral ablation of the visual cortex at different postnatal ages before eye opening. We identified dying cells as apoptotic with light and electron microscopy, using terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling (TUNEL), and immunohistochemistry for active caspase-3. In the dLGN of normal animals, TUNEL+cells were detected during the first postnatal week, with a peak at postnatal day (P) 1. Following enucleation at birth or at P7, the frequency of apoptotic cells in the contralateral dLGN increased significantly at postlesion day (PLD) 1 and returned to normal values by PLD7. In contrast to early lesions, enucleation at P14 did not induce significant changes in apoptosis in the dLGN. Cortical lesions performed at P0, P7 or at P14 induced the death of the overwhelming majority of cells in the ipsilateral dLGN, which led to a severe reduction in size of the nucleus by PLD7 and its complete elimination by adulthood. Double labeling with TUNEL and immunofluorescence for neuronal nuclear protein (NeuN) showed that in both normal and lesioned animals, apoptotic cells were mainly neurons. We suggest that: i) apoptosis in the dLGN occurs during the precritical period of neuronal maturation; ii) developing neurons in the dLGN are more dependent on the integrity of their connections with the visual cortex than with the retina for survival; and iii) lesion-induced apoptosis in the dLGN during development depends on the type and extent of the connectivity affected.


Asunto(s)
Apoptosis/fisiología , Cuerpos Geniculados/crecimiento & desarrollo , Cuerpos Geniculados/lesiones , Neuronas/fisiología , Técnicas de Ablación/métodos , Factores de Edad , Análisis de Varianza , Animales , Animales Recién Nacidos , Caspasa 3/metabolismo , Recuento de Células/métodos , Enucleación del Ojo/métodos , Lateralidad Funcional/fisiología , Regulación del Desarrollo de la Expresión Génica/fisiología , Cuerpos Geniculados/patología , Etiquetado Corte-Fin in Situ/métodos , Microscopía Electrónica de Transmisión/métodos , Neuronas/patología , Neuronas/ultraestructura , Ratas , Ratas Wistar , Técnicas Estereotáxicas , Vías Visuales/patología , Vías Visuales/fisiopatología , Vías Visuales/ultraestructura
11.
Brain Res ; 1252: 30-44, 2009 Feb 03.
Artículo en Inglés | MEDLINE | ID: mdl-19013438

RESUMEN

We evaluated the pattern of apoptosis in the rat striatum during normal development and in two models of lesion-induced cell death. Lesions included i) unilateral ablations of the cerebral cortex at different postnatal ages, and ii) early postnatal lesions of the catecholaminergic afferent systems of the striatum with 6-hydroxydopamine (6-OHDA). Dying cells were identified as apoptotic using the TUNEL (terminal deoxynucleotidyl-transferase-mediated dUTP-biotin nick end labeling) method at the light and electron microscopic levels. Moreover, we used immunohistochemistry for the apoptotic markers active caspase-3 and fractin. TUNEL+ cells were present in the striatum during the first four postnatal weeks. Their frequency was high during the first postnatal week and peaked at postnatal day (P)5. Cortical lesions at birth, in contrast to those performed at later stages, induced a significant increase in the frequency of TUNEL+ cells in the ipsilateral striatum, which peaked at seven days postlesion. 6-OHDA lesions resulted in a similar and significant increase in the frequency of TUNEL+ cells in the striatum, which also peaked at P7. We also showed that cortical lesions at P0 and 6-OHDA lesions resulted in a reduction in the frequency, as well as in alterations of the morphology of gamma-aminobutyric acid (GABA)-immunoreactive (ir) neurons in the striatum. We suggest that: i) apoptosis in the striatum is temporally coordinated with maturation events in this area and ii) early developmental lesions of major afferent pathways to the striatum affect both the survival and phenotype of striatal neurons.


Asunto(s)
Apoptosis , Cuerpo Estriado/crecimiento & desarrollo , Cuerpo Estriado/fisiología , Neuronas/fisiología , Animales , Encéfalo/efectos de los fármacos , Encéfalo/metabolismo , Encéfalo/cirugía , Caspasa 3/metabolismo , Cuerpo Estriado/citología , Citotoxinas/farmacología , Inmunohistoquímica , Etiquetado Corte-Fin in Situ , Microscopía Electrónica , Neuronas/metabolismo , Neuronas/ultraestructura , Oxidopamina/farmacología , Ratas , Ratas Wistar , Ácido gamma-Aminobutírico/metabolismo
12.
Neurology ; 69(2): 166-71, 2007 Jul 10.
Artículo en Inglés | MEDLINE | ID: mdl-17620549

RESUMEN

BACKGROUND AND OBJECTIVE: Hypomyelination with atrophy of the basal ganglia and cerebellum is a recently defined disorder. Only a few patients have been described. We report on 11 additional patients and new MRI findings and provide histopathologic confirmation of the MRI interpretation. METHODS: We reviewed the patients' clinical history and present findings. We scored the MRI abnormalities. The histopathology of one patient was re-examined. RESULTS: The patients' early psychomotor development was normal or delayed, followed by increasing extrapyramidal movement abnormalities, ataxia, and spasticity. Mental capacities were variably affected. MRI showed hypomyelination with, on follow-up, evidence of further myelin loss and variable white matter atrophy. The putamen was small or, more often, absent; the head of the caudate nucleus was decreased in size. In contrast, the thalamus and globus pallidus remained normal. Cerebellar atrophy was invariably present. Histopathology confirmed the myelin deficiency, probably related to both lack of deposition and low-grade further loss. The degeneration of putamen was subtotal. The cerebellar cortex was affected, particularly the granular layer. CONCLUSION: Hypomyelination with atrophy of the basal ganglia and cerebellum is a syndrome diagnosed by distinctive MRI findings. Histopathology confirms hypomyelination, low-grade further myelin loss, subtotal degeneration of the putamen, and cerebellar cortical atrophy. All known patients are sporadic, and the mode of inheritance is unclear.


Asunto(s)
Atrofia/patología , Ganglios Basales/patología , Cerebelo/patología , Enfermedades Desmielinizantes del Sistema Nervioso Central Hereditarias/patología , Trastornos Heredodegenerativos del Sistema Nervioso/patología , Atrofia/genética , Atrofia/fisiopatología , Ganglios Basales/fisiopatología , Enfermedades de los Ganglios Basales/genética , Enfermedades de los Ganglios Basales/patología , Enfermedades de los Ganglios Basales/fisiopatología , Enfermedades Cerebelosas/genética , Enfermedades Cerebelosas/patología , Enfermedades Cerebelosas/fisiopatología , Cerebelo/fisiopatología , Niño , Preescolar , Progresión de la Enfermedad , Femenino , Enfermedades Desmielinizantes del Sistema Nervioso Central Hereditarias/genética , Enfermedades Desmielinizantes del Sistema Nervioso Central Hereditarias/fisiopatología , Trastornos Heredodegenerativos del Sistema Nervioso/genética , Trastornos Heredodegenerativos del Sistema Nervioso/fisiopatología , Humanos , Patrón de Herencia/genética , Imagen por Resonancia Magnética , Masculino , Fibras Nerviosas Mielínicas/patología , Valor Predictivo de las Pruebas , Síndrome
13.
AJNR Am J Neuroradiol ; 27(10): 2088-92, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-17110673

RESUMEN

We present a case of infantile-onset Alexander disease (AD) with a novel glial fibrillary acidic protein mutation but without clinical evidence of neurologic deterioration. Brain MRI studies showed typical AD findings and increasing size of frontal cavitations. Serial proton MR spectroscopy demonstrated high levels of myo-inositol and lactic acid and decreasing levels of N-acetylaspartate. The degree of demyelination and the timing of the axonal degeneration may determine phenotypic severity of the disease. Conventional neuroimaging techniques cannot always predict the outcome.


Asunto(s)
Enfermedad de Alexander/diagnóstico , Enfermedad de Alexander/genética , Imagen por Resonancia Magnética , Preescolar , Femenino , Humanos , Fenotipo
14.
J Vet Med A Physiol Pathol Clin Med ; 53(2): 81-4, 2006 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-16466461

RESUMEN

A 3.5-year-old intact male American Pit Bull was presented because of urinary incontinence and dysuria. Constipation, followed by diarrhoea, ocular disturbances and finally regurgitation developed over the next 4 years. Autonomic dysfunction was evidenced by clinical presentation, as well as positive ophthalmic pilocarpine test and subnormal Schirmer tear test. Diagnosis, however, was established through histopathological and immunohistochemical examination. Lesions attributable to inflammatory degenerative neuropathy of the autonomic ganglia, which represents one of the various types of human autonomic failure, were detected.


Asunto(s)
Enfermedades del Sistema Nervioso Autónomo/veterinaria , Enfermedades de los Perros/patología , Animales , Enfermedades del Sistema Nervioso Autónomo/patología , Perros , Resultado Fatal , Masculino , Pronóstico , Factores de Tiempo
15.
Neuropediatrics ; 36(5): 290-301, 2005 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-16217703

RESUMEN

OBJECTIVE: The aim of this study is to describe neuroimaging patterns in children with respiratory chain (RC) defects using magnetic resonance imaging (MRI) and proton magnetic resonance spectroscopy (MRS) and to assess their role in the diagnostic evaluation. METHOD: Neuroimaging studies of 49 children (newborn to 15 years old) with biochemical evidence of RC defect were reviewed. Patients were divided in 3 groups ("definite" = 24, "probable" = 14, "possible" = 11) according to Modified Adult Criteria for the diagnosis of RC defect. Eighty-one MRI studies were reviewed for deep gray and white matter changes, degree of myelination, cerebral and cerebellar atrophy, and 67 proton MRS studies were assessed for the presence or absence of lactate elevation, as well as NAA/Cr ratio. The findings were compared among the 3 groups with chi-square test. RESULTS: All patients with "pure" myopathy had normal imaging studies. In patients with CNS involvement, significant differences in the frequency of imaging abnormalities among groups were found for deep gray matter (43 %/8 %/0 %; p = 0.01) and for the presence of lactate elevation on proton MRS (81 %/31 %/0 %; p = 0.001). CONCLUSION: Brain MRI and proton MRS abnormalities were observed only in association with clinical CNS involvement. Deep gray matter signal abnormalities on structural imaging and lactate elevation on proton MRS were more frequently observed in the "definite" group and represent neuroimaging markers for RC mitochondriopathy.


Asunto(s)
Encéfalo/patología , Imagen por Resonancia Magnética , Espectroscopía de Resonancia Magnética , Enfermedades Mitocondriales/diagnóstico , Protones , Ácido Aspártico/análogos & derivados , Ácido Aspártico/metabolismo , Encéfalo/metabolismo , Química Encefálica/fisiología , Mapeo Encefálico , Niño , Preescolar , Femenino , Humanos , Lactante , Recién Nacido , Ácido Láctico/metabolismo , Masculino
16.
Neuropediatrics ; 36(3): 214-7, 2005 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-15944909

RESUMEN

Joubert syndrome is a genetically heterogeneous disorder. The diagnostic criteria include episodic hyperventilation, abnormal eye movements, psychomotor retardation, hypotonia, ataxia, and the characteristic neuro-imaging findings (molar-tooth sign). Many of these clinical features have been observed in new-borns with mitochondrial disorders as well. Congenital brain malformations, including cerebellar hypoplasia, have been described in pyruvate dehydrogenase deficiency. Malformations of the vermis and the cerebellar peduncles, with the lack of axonal decussations, however, are characteristic for Joubert syndrome but unique in patients with mitochondrial disorders. Here, we describe a child with Joubert syndrome presenting with primary lactic acidemia, decreased pyruvate oxidation rates, decreased ATP production, and a mildly decreased pyruvate dehydrogenase complex activity measured in a fresh muscle biopsy. Sequence analysis of the PDHc E1 alpha gene and the PDHX genes revealed no mutations. The patient received continuous feeding through a feeding tube for two years and showed a significant clinical improvement with a complete resolution of the chronic lactic acidemia. A second muscle biopsy revealed significantly decreased pyruvate oxidation rates and ATP production, but a normal pyruvate dehydrogenase complex activity. We suggest that the described mitochondrial dysfunction in our patient is secondary to an underlying mutation leading to Joubert syndrome.


Asunto(s)
Anomalías Múltiples , Cerebelo/anomalías , Oftalmopatías/patología , Síndrome de Marfan/patología , Enfermedades Mitocondriales/patología , Hipotonía Muscular/patología , Facies , Femenino , Estudios de Seguimiento , Humanos , Recién Nacido , Síndrome
18.
Neuroscience ; 110(2): 245-56, 2002.
Artículo en Inglés | MEDLINE | ID: mdl-11958867

RESUMEN

The dopaminergic innervation of the developing caudate-putamen (patches and matrix) and nucleus accumbens (shell and core) of the rat was examined with light and electron microscope immunocytochemistry, using antibodies against dopamine. Light microscopic analysis showed, in accordance with previous studies, that early in life, dopaminergic fibers were relatively thick and present throughout the striatum. Their distribution was heterogeneous, showing dense aggregations, the so-called dopamine islands. The pattern of innervation became more uniform during the third postnatal week with most of the dopamine islands no longer detectable. For electron microscopic analysis, parts of the caudate-putamen containing dopamine islands or matrix, and of the nucleus accumbens, from the shell and the core of the nucleus, were selected. This analysis revealed that symmetrical synapses between immunoreactive profiles and unlabeled dendritic shafts predominated throughout development but, at the late stages, symmetrical axospinous synapses also became a prominent feature. These findings indicate that: (1) although the caudate-putamen and the nucleus accumbens have different connections and functions, they exhibit similar types of dopaminergic synapses, and (2) the relatively late detection of dopaminergic axospinous synapses suggests that the development of the dopaminergic system in the striatum is an active process, which parallels the morphological changes of striatal neurons and may contribute to their maturation.


Asunto(s)
Dopamina/metabolismo , Neostriado/crecimiento & desarrollo , Vías Nerviosas/crecimiento & desarrollo , Núcleo Accumbens/crecimiento & desarrollo , Terminales Presinápticos/ultraestructura , Sustancia Negra/crecimiento & desarrollo , Área Tegmental Ventral/crecimiento & desarrollo , Envejecimiento/metabolismo , Animales , Animales Recién Nacidos , Diferenciación Celular/fisiología , Dendritas/metabolismo , Dendritas/ultraestructura , Inmunohistoquímica , Microscopía Electrónica , Neostriado/metabolismo , Neostriado/ultraestructura , Vías Nerviosas/metabolismo , Vías Nerviosas/ultraestructura , Núcleo Accumbens/metabolismo , Núcleo Accumbens/ultraestructura , Terminales Presinápticos/metabolismo , Ratas , Ratas Wistar , Sustancia Negra/metabolismo , Sustancia Negra/ultraestructura , Membranas Sinápticas/metabolismo , Membranas Sinápticas/ultraestructura , Área Tegmental Ventral/metabolismo , Área Tegmental Ventral/ultraestructura
19.
Am J Hematol ; 68(4): 221-4, 2001 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-11754409

RESUMEN

We studied the changing pattern of the distribution of ferritin levels in 430 regularly-transfused patients with thalassemia in an attempt to evaluate compliance of chelation with deferoxamine. The study covered 15 years and was divided in three periods: 1981-1985, 1986-1990, and 1991-1995. The patients were stratified in age-groups. The mean ferritin levels of each period were calculated for each patient individually. The study showed that: (i) When all the patients were compared as a group, there was a significant decrease in mean ferritin between 1981-1985 and 1991-1995, despite a significant change in the patients' mean age; (ii) When patients of same age were compared between periods, there was a decrease in mean ferritin between 1981-1985 and 1991-1995, as well as a decrease in the proportion of patients with ferritin >4000 microg/L, with a parallel increase in the proportion of patients who had ferritin <2000 microg/L; (iii) When the same patients were followed longitudinally, they showed a decrease in their ferritin levels in all age groups with the exception of the late adolescence period. The decrease in iron overload observed in patients on close follow up implies that compliance with chelation therapy has improved with time and therefore, a favourable influence in survival could be expected.


Asunto(s)
Terapia por Quelación/psicología , Ferritinas/sangre , Quelantes del Hierro/uso terapéutico , Talasemia/tratamiento farmacológico , Adolescente , Adulto , Niño , Preescolar , Deferoxamina/uso terapéutico , Monitoreo de Drogas , Humanos , Sobrecarga de Hierro/sangre , Sobrecarga de Hierro/diagnóstico , Sobrecarga de Hierro/etiología , Estudios Longitudinales , Cooperación del Paciente , Estudios Retrospectivos , Talasemia/sangre , Talasemia/psicología
20.
Pediatr Hematol Oncol ; 17(5): 401-8, 2000.
Artículo en Inglés | MEDLINE | ID: mdl-10914051

RESUMEN

Bronchoscopy in a 4.5-year-old girl with recurrent pneumonia showed an exophytic endobronchial mass. Biopsy disclosed microscopic and ultrastructural features of a low-grade mucoepidermoid carcinoma. Complete cure was accomplished by surgical removal of the tumor and right lower lobe.


Asunto(s)
Neoplasias de los Bronquios/patología , Carcinoma Mucoepidermoide/patología , Adolescente , Neoplasias de los Bronquios/diagnóstico , Neoplasias de los Bronquios/cirugía , Carcinoma Mucoepidermoide/diagnóstico , Carcinoma Mucoepidermoide/cirugía , Niño , Preescolar , Femenino , Células Caliciformes/patología , Células Caliciformes/ultraestructura , Humanos , Masculino , Neumonía/etiología
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