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Oral findings and dental care in a patient with myelomeningocele: case report of a 3-year-old child

QUEIROZ, Alexandra Mussolino de; SAIANI, Regina Aparecida Segatto; ROSSI, Cristhiane Ristum Bagatin; GOMES-SILVA, Jaciara Miranda; NELSON-FILHO, Paulo
Fonte: Fundação Odontológica de Ribeirão Preto Publicador: Fundação Odontológica de Ribeirão Preto
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
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Myelomeningocele (MMC) is a congenital malformation of the neural tube that occurs in the first weeks of pregnancy. This malformation refers to the caudal non-closure of the neural tube and neural tissue exposure, which lead to neurological problems, such as hydrocephalus, motor disability, genitourinary tract and skeletal abnormalities and mental retardation. Patients with MMC have an acknowledged predisposition to latex allergy and are usually at a high caries risk and activity due to poor oral hygiene, fermentable carbon hydrate-rich diet and prolonged use of sugar-containing medications. This paper addresses the common oral findings in pediatric patients with MMC, discusses the strategies and precautions to deal with these individuals and reports the dental care to a young child diagnosed with this condition.; Mielomeningocele (MMC) representa uma malformação congênita do tubo neural que acontece nas primeiras semanas de gestação. Esta malformação refere-se ao não fechamento da coluna vertebral expondo a medula espinhal, que levará a problemas neurológicos, como hidrocefalia, dificuldades motoras, anomalias esqueléticas e do trato genito-urinário, além de retardo mental. Pacientes com MMC apresentam uma reconhecida predisposição à alergia ao latex e geralmente apresentam um alto risco e atividade de cárie dental decorrente de uma higiene oral deficiente...

Novel Treatment Immediately after Myelomeningocele Repair Applying Low-Level Laser Therapy in Newborns: A Pilot Study

PINTO, Fernando C.; CHAVANTES, M. Cristina; PINTO, Nathali C.; ALHO, Eduardo J. L.; YOSHIMURA, Elisabeth M.; MATUSHITA, Hamilton; KREBS, Vera L. J.; TEIXEIRA, Manoel J.
Fonte: KARGER; Basel Publicador: KARGER; Basel
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
37.31%
Background/Aims: The use of low-level laser therapy (LLLT) in neurosurgery is still hardly disseminated and there are situations in which the effects of this therapeutic tool would be extremely relevant in this medical field. The aim of the present study is to analyze the effect of LLLT on tissue repair after the corrective surgical incision in neonates with myelomeningocele, in an attempt to diminish the incidence of postoperative dehiscences following surgical repair performed immediately after birth. Materials and Methods: Prospective pilot study with 13 patients submitted to surgery at birth who received adjuvant treatment with LLLT (group A). A diode laser CW, lambda = 685 nm, p = 21 mW, was applied punctually along the surgical incision, with 0.19 J delivered per point, accounting for a total of 4-10 J delivered energy per patient, according to the surgical wound area and then compared with the results obtained in 23 patients who underwent surgery without laser therapy (group B). Results: This pilot study disclosed a significant decline in dehiscences of the surgical wounds in neonates who were submitted to LLLT (7.69 vs. 17.39%). Conclusion: This new adjuvant therapeutic modality with LLLT aided the healing of surgical wounds...

Surgical Treatment of Myelomeningocele Carried Out at `Time Zero` Immediately after Birth

PINTO, Fernando Campos Gomes; MATUSHITA, Hamilton; FURLAN, Andre Luiz Beer; ALHO, Eduardo Joaquim; GOLDENBERG, Dov Charles; BUNDUKI, Victor; KREBS, Vera Lucia Jornada; TEIXEIRA, Manoel Jacobsen
Fonte: KARGER Publicador: KARGER
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
37.31%
Background/Aims: To present a protocol of immediate surgical repair of myelomeningocele (MMC) after birth (`time zero`) and compare this surgical outcome with the surgery performed after the newborn`s admission to the nursery before the operation. Methods: Data from the medical files of 31 patients with MMC that underwent surgery after birth and after admission at the nursery ( group I) were compared with a group of 23 patients with MMC admitted and prospectively followed, who underwent surgery immediately after birth - `at time zero` ( group II). Results: The preoperative rupture of the MMC occurred more frequently in group I (67 vs. 39%, p < 0.05). The need for ventriculoperitoneal shunt was 84% in group I and 65% in group II and 4 of them were performed during the same anesthetic time as the immediate MMC repair, with no statistically significant difference. Group I had a higher incidence of small dehiscences when compared to group II ( 29 vs. 13%, p < 0.05); however, there was no statistically significant difference regarding infections. After 1 year of follow-up, 61% of group I showed neurodevelopmental delay, whereas only 35% of group II showed it. Conclusions: The surgical intervention carried out immediately after the birth showed benefits regarding a lower incidence of preoperative rupture of the MMC...

Respiratory muscular strength decrease in children with mylomeningocele

Ronchi, Carlos Fernando; de Oliveira Antunes, Leticia Claudia; Fioretto, Jose Roberto
Fonte: Lippincott Williams & Wilkins Publicador: Lippincott Williams & Wilkins
Tipo: Artigo de Revista Científica Formato: E73-E75
ENG
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Study Design. Case-control study.Objective. To evaluate respiratory muscle force in children with myelomeningocele. Summary of Background Data. Myelomeningocele is a common spinal cord malformation with limitations linked to central nervous system lesions and abnormalities in respiratory movements. Despite this, little attention has been given to evaluating respiratory muscle force in these patients.Methods. Children with myelomeningocele aged between 4 and 14 years ( myelomeningocele group; MG, n = 20) were studied and compared with healthy children ( control group; CG, n = 20) matched for age and gender. Respiratory muscular force was evaluated by maximum inspiratory ( Pimax) and expiratory ( Pemax) pressures.Results. Groups were similar for age [ CG = 8 ( 6 - 13) = MG = 8 ( 4 - 14), P > 0.05]; gender, and body mass index [ CG = 17.4 ( 14.1 - 24.7) x MG = 19.2 ( 12.6 - 31.9), P > 0.05]. The lumbosacral region was predominantly affected ( 45%). Maximum respiratory pressures were significantly higher in CG than MG ( Pimax = CG: similar to 83 +/- 21.75 > MG: -54.1 +/- 23.66; P < 0.001 and Pemax = CG: + 87.4 +/- 26.28 > MG: + 64.6 +/- 26.97; P = 0.01). Patients with upper spinal lesion ( UL) had lower maximum respiratory pressure values than those with lower spinal lesion ( LL)...

Avaliação da evolução neurocirurgica de crianças com diagnostico intrauterino de mielomeningocele e elaboração de protocolo de cirurgia fetal para prevenção de hidrocefalia; Assessment of neurosurgical outcomes in children prenatally diagnosed with myelomeningocele and developmento of a protocol for fetal surgery to prevent hydrocephalus

Helder Jose Lessa Zambelli
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 18/07/2006 PT
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O diagnóstico pré-natal da mielomeningocele permite melhor planejamento de sua abordagem e, mais recentemente, um possível reparo intra-útero. Este estudo analisa a evolução neurocirúrgica de 98 crianças com mielomeningocele, tratadas no período pós-natal através de cirurgia tradicional, de janeiro de 1994 a dezembro de 2002, no centro de referência em medicina fetal da Universidade Estadual de Campinas (UNICAMP). Desta avaliação retrospectiva, foi elaborado um protocolo próprio para cirurgia fetal para prevenção de hidrocefalia, identificando-se os fetos que se beneficiariam com a correção intra-útero da mielomeningocele. O estudo revelou uma realidade caracterizada pelo prognóstico ruim e pelo alto índice de complicações decorrentes da mielomeningocele, principalmente no que se diz respeito à hidrocefalia. Com isso, no protocolo foram incluídos somente fetos com um tamanho ventricular menor que 14 mm no momento da cirurgia, fetos entre 20 e 25 semanas de gestação, fetos com defeitos situados abaixo de L3-L4, fetos com mielomeningocele como malformação isolada e ausência de anomalias cromossômicas, tendo como critérios de exclusão: a primiparidade, fetos com lesão abaixo de S1 e a incapacidade de entendimento das gestantes dos riscos materno-fetais. Apesar da correção intra-útero para prevenção de hidrocefalia ter uma aplicação bastante restrita em nosso meio...

Surgical results of strabismus correction in patients with myelomeningocele

Issaho,Dayane Cristine; Tabuse,Marcia Keiko Uyeno; Kamida,Nilce Tiemi Shiwaku; Cronemberger,Monica Fialho
Fonte: Conselho Brasileiro de Oftalmologia Publicador: Conselho Brasileiro de Oftalmologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/02/2015 EN
Relevância na Pesquisa
27.61%
Purpose: Myelomeningocele is one of the most common birth defects. It is associated with severe neurological deficiencies, and ocular changes, such as strabismus, are very common. The purpose of this study was to describe indications for strabismus surgery in patients with myelomeningocele and to evaluate the results achieved with surgical correction. Methods: We retrospectively reviewed records of all patients with myelomeningocele who underwent surgery for strabismus correction in a 5-year period in an institution for disabled children. Results: The main indications for strabismus surgery were esotropia and A-pattern anisotropia. Excellent surgical results were achieved in 60.9% of patients, satisfactory in 12.2%, and unsatisfactory in 26.9%. Conclusion: Patients with myelomeningocele and strabismus had a high incidence of esotropia and A-pattern anisotropia. Strabismus surgery in these patients had an elevated percentage of excellent and satisfactory results, not only for the ocular deviation, but also for improvement of head posture.

Improvement of motor function and decreased need for postnatal shunting in children who had undergone intrauterine myelomeningocele repair

Faria,Tereza Cristina Carbonari de; Cavalheiro,Sergio; Hisaba,Wagner Jou; Moron,Antonio Fernandes; Torloni,Maria Regina; Oliveira,Ana Lucia Batista de; Borges,Carolina Peixoto
Fonte: Academia Brasileira de Neurologia - ABNEURO Publicador: Academia Brasileira de Neurologia - ABNEURO
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2013 EN
Relevância na Pesquisa
37.7%
Objective To compare neuromotor development between patients who did and those who did not undergo intrauterine myelomeningocele repair. Methods Children with myelomeningocele aged between 3.5 and 6 years who did undergo intrauterine repair (Group A, n=6) or not (Group B; n=7) were assessed for neuromotor development at both anatomical and functional levels, need for orthoses, and cognitive function. Results Intrauterine myelomeningocele repair significantly improved motor function. The functional level was higher than the anatomical level by 2 or more spinal segments in all children in Group A and 2 children in Group B, with a significant statistical difference between groups (p<0.05). Five children in Group A and one in Group B were community ambulators. Conclusion Despite the small sample, it was observed that an improvement of motor function and decreased need for postnatal shunting in the 6 children who had undergone intrauterine myelomeningocele repair.

Intervening factors in the walking of children presenting myelomeningocele

Fujisawa,Dirce Shizuko; Gois,Marcia Larissa Cavallari da Costa; Dias,Josilainne Marcelino; Alves,Egle de Oliveira Netto Moreira; Tavares,Marcelo de Souza; Cardoso,Jefferson Rosa
Fonte: Pontifícia Universidade Católica do Paraná Publicador: Pontifícia Universidade Católica do Paraná
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2011 EN
Relevância na Pesquisa
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INTRODUCTION: All children presenting myelomeningocele are capable of walking. Certain interventions can influence the walking prognosis of these children: physical therapy, medication, and nutritional orientation. OBJECTIVES: The aim of this study was to verify the association between ability to walk in children with myelomeningocele and clinical, socioeconomic and therapeutic factors. METHOD: This cross-sectional study was conducted at the University Hospital. The participants were children aged two years-old or more, diagnosed with myelomeningocele. Data collection was conducted by physical therapy assessment and medical records. The dependent variable was walking and the independent variables were clinical, socioeconomic and therapeutic factors. RESULTS: Forty-one children were evaluated, with a median age of 5 years-old (2-9). The clinical factors that revealed an association with walking were neurological area (p < 0,0001) and fractures (p = 0,022). Socioeconomic factors showed not to be significant in relation to ability to walk. Surgery (p = 0,017) and the use of assistive devices (p = 0,023) were also associated with the ability to walk. Conclusion: The determinant clinical factor for walking prognosis was the neurological area. The use of assistive devices and surgical intervention were shown to be necessary for promoting walking activity.

Oral findings and dental care in a patient with myelomeningocele: case report of a 3-year-old child

Queiroz,Alexandra Mussolino de; Saiani,Regina Aparecida Segatto; Rossi,Cristhiane Ristum Bagatin; Gomes-Silva,Jaciara Miranda; Nelson-Filho,Paulo
Fonte: Fundação Odontológica de Ribeirão Preto Publicador: Fundação Odontológica de Ribeirão Preto
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2009 EN
Relevância na Pesquisa
37.31%
Myelomeningocele (MMC) is a congenital malformation of the neural tube that occurs in the first weeks of pregnancy. This malformation refers to the caudal non-closure of the neural tube and neural tissue exposure, which lead to neurological problems, such as hydrocephalus, motor disability, genitourinary tract and skeletal abnormalities and mental retardation. Patients with MMC have an acknowledged predisposition to latex allergy and are usually at a high caries risk and activity due to poor oral hygiene, fermentable carbon hydrate-rich diet and prolonged use of sugar-containing medications. This paper addresses the common oral findings in pediatric patients with MMC, discusses the strategies and precautions to deal with these individuals and reports the dental care to a young child diagnosed with this condition.

Prenatal intervention for urinary obstruction and myelomeningocele

Swana,Hubert S.; Sutherland,Ronald S.; Baskin,Laurence
Fonte: Sociedade Brasileira de Urologia Publicador: Sociedade Brasileira de Urologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/02/2004 EN
Relevância na Pesquisa
37.7%
Widespread use of ultrasonography has resulted in an increase in the recognition of fetal hydronephrosis. The enthusiasm that accompanied early interventions has been tempered by the experience and results obtained over the past 2 decades. The goal has remained the same: to identify patients with serious prenatal obstruction and to identify those which may benefit from intervention. Myelomeningocele remains a devastating congenital anomaly. Fetal and experimental studies suggested that patients with myelomeningocele could benefit from prenatal intervention. Advances in technology and perinatal management have made intervention for more complex malformations such as myelomeningocele possible. This article will review current knowledge and will detail rational management for the management of prenatal hydronephrosis. The current state of antenatal myelomeningocele repair and the urologic implications will be described as well.

Efficacy of transcutaneous functional electrical stimulation on urinary incontinence in myelomeningocele: results of a pilot study

Kajbafzadeh,Abdol-Mohammad; Sharifi-Rad,Lida; Dianat,Seyedsaeid
Fonte: Sociedade Brasileira de Urologia Publicador: Sociedade Brasileira de Urologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2010 EN
Relevância na Pesquisa
37.31%
PURPOSE: To investigate the efficacy of transcutaneous functional electrical stimulation (FES) on voiding symptoms in children with myelomeningocele (MMC) suffering from neuropathic urinary incontinence. MATERIALS AND METHODS: Six girls and 6 boys with moderate to severe urinary incontinence secondary to MMC were included. Median age of children was 5.04 (range: 3-11) years. They underwent a urodynamic study (UDS) before and 3 months after FES with special attention to detrusor leak point pressure (DLPP) and maximal bladder capacity (MBC). Daily incontinence score, frequency of pad changing, and enuresis were also assessed before and three months after treatment. Fifteen courses of FES for 15 minutes 3 times per week were performed with low frequency (40 Hz) electrical current, duration of 250µs, with hold and rest time of 2 seconds. RESULTS: Nine children had improvement on urinary incontinence score, while three children had no improvement. Median DLPP was significantly increased from 38.5 (range: 12-50) cm H2O to 59.5 (range: 18-83) cm H2O (P = 0.003). MBC was significantly increased from median value of 155 (range: 60-250) mL to 200 (range: 110-300) mL (P = 0.007). CONCLUSIONS: This is a pilot study showing that FES therapy might have positive effects on improvement of voiding symptoms of MMC children with neurogenic urinary incontinence in terms of daily incontinence score and UDS parameters.

Folate Metabolism Gene 5,10-Methylenetetrahydrofolate Reductase (MTHFR) Is Associated with ADHD in Myelomeningocele Patients

Spellicy, Catherine J.; Northrup, Hope; Fletcher, Jack M.; Cirino, Paul T.; Dennis, Maureen; Morrison, Alanna C.; Martinez, Carla A.; Au, Kit Sing
Fonte: Public Library of Science Publicador: Public Library of Science
Tipo: Artigo de Revista Científica
Publicado em 05/12/2012 EN
Relevância na Pesquisa
27.86%
The objective of this study was to examine the relation between the 5, 10-methylenetetrahydrofolate reductase (MTHFR) gene and behaviors related to attention- deficit/hyperactivity disorder (ADHD) in individuals with myelomeningocele. The rationale for the study was twofold: folate metabolizing genes, (e.g. MTHFR), are important not only in the etiology of neural tube defects but are also critical to cognitive function; and individuals with myelomeningocele have an elevated incidence of ADHD. Here, we tested 478 individuals with myelomeningocele for attention-deficit hyperactivity disorder behavior using the Swanson Nolan Achenbach Pelham-IV ADHD rating scale. Myelomeningocele participants in this group for whom DNAs were available were genotyped for seven single nucleotide polymorphisms (SNPs) in the MTHFR gene. The SNPs were evaluated for an association with manifestation of the ADHD phenotype in children with myelomeningocele. The data show that 28.7% of myelomeningocele participants exhibit rating scale elevations consistent with ADHD; of these 70.1% had scores consistent with the predominantly inattentive subtype. In addition, we also show a positive association between the SNP rs4846049 in the 3′-untranslated region of the MTHFR gene and the attention-deficit hyperactivity disorder phenotype in myelomeningocele participants. These results lend further support to the finding that behavior related to ADHD is more prevalent in patients with myelomeningocele than in the general population. These data also indicate the potential importance of the MTHFR gene in the etiology of the ADHD phenotype.

Anesthesia For In Utero Repair of Myelomeningocele

Ferschl, Marla; Ball, Robert; Lee, Hanmin; Rollins, Mark D.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /05/2013 EN
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Recently published results suggest that prenatal repair of fetal myelomeningocele is a potentially preferable alternative when compared to postnatal repair. In this article, the pathology of myelomeningocele, unique physiologic considerations, perioperative anesthetic management, and ethical considerations of open fetal surgery for prenatal myelomeningocele repair are discussed. Open fetal surgeries have many unique anesthetic issues such as inducing profound uterine relaxation, vigilance for maternal or fetal blood loss, fetal monitoring, and possible fetal resuscitation. Postoperative management, including the requirement for postoperative tocolysis and maternal analgesia are also reviewed. The success of intrauterine myelomeningocele repair relies on a well-coordinated multidisciplinary approach. Fetal surgery is an important topic for anesthesiologists to understand, as the number of fetal procedures is likely to increase as new fetal treatment centers are opened across the United States.

Arsenic is associated with reduced effect of folic acid in myelomeningocele prevention: a case control study in Bangladesh

Mazumdar, Maitreyi; Ibne Hasan, Md Omar Sharif; Hamid, Rezina; Valeri, Linda; Paul, Ligi; Selhub, Jacob; Rodrigues, Ema G; Silva, Fareesa; Mia, Selim; Mostofa, Md Golam; Quamruzzaman, Quazi; Rahman, Mahmuder; Christiani, David C
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
EN_US
Relevância na Pesquisa
37.76%
Background: Arsenic induces neural tube defects in several animal models, but its potential to cause neural tube defects in humans is unknown. Our objective was to investigate the associations between maternal arsenic exposure, periconceptional folic acid supplementation, and risk of posterior neural tube defect (myelomeningocele) among a highly exposed population in rural Bangladesh. Methods: We performed a case–control study that recruited physician-confirmed cases from community health clinics served by Dhaka Community Hospital in Bangladesh, as well as local health facilities that treat children with myelomeningocele. Controls were selected from pregnancy registries in the same areas. Maternal arsenic exposure was estimated from drinking water samples taken from wells used during the first trimester of pregnancy. Periconceptional folic acid use was ascertained by self-report, and maternal folate status was further assessed by plasma folate levels measured at the time of the study visit. Results: Fifty-seven cases of myelomeningocele were identified along with 55 controls. A significant interaction was observed between drinking water inorganic arsenic and periconceptional folic acid use. As drinking water inorganic arsenic concentrations increased from 1 to 25 μg/L...

Qualidade de vida relacionada à saúde em mães de crianças e adolescentes com mielomeningocele; Health-related quality of life of mothers of children and adolescents with myelomeningocele

Morais, Danielle Moretti
Fonte: Universidade Federal de Uberlândia Publicador: Universidade Federal de Uberlândia
Tipo: Dissertação
POR
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37.31%
A Mielomeningocele (MM) ocasiona dificuldades motoras e sensitivas. Os diversos problemas de saúde associados a essa condição podem gerar na mãe, principal cuidador, estresse, ansiedade, preocupação excessiva, depressão e impactar sua qualidade de vida relacionada à saúde (QVRS). Diante disso, este estudo teve como objetivo avaliar a QVRS de mães de crianças/adolescentes com MM em relação às mães de crianças/adolescentes saudáveis, e verificar a sua associação com variáveis clínicas e demográficas dos pacientes e das mães. Participaram do estudo 50 mães de crianças e adolescentes até 18 anos de idade e diagnóstico de MM, em acompanhamento na Associação de Assistência à Criança Deficiente (AACD-MG) e mães de crianças e adolescentes saudáveis, pareadas por sexo e idade dos pacientes na proporção de 2:1. Os pacientes foram classificados em grupos segundo o nível de lesão neurológica e padrão de deambulação. Os dados demográficos e clínicos foram obtidos por entrevista e completados com informações contidas no prontuário médico. A QVRS das mães foi avaliada por meio de entrevista pelo Medical Outcomes Study 36-Item Short Form Health Survey (SF-36) e a confiabilidade foi verificada pelo coeficiente de alfa Cronbach. O Inventário de Depressão de Beck (IDB) foi respondido de maneira auto-aplicada para verificar os sintomas depressivos. Os escores do SF-36 foram comparados entre os grupos de mães de pacientes com MM e controle (teste de Mann-Whitney)...

Clinical and ultrasonographic criteria for using ventriculoperitoneal shunts in newborns with myelomeningocele

Melo,Jose Roberto Tude; Pacheco,Pollyana; Melo,Emília Nunes de; Vasconcellos,Ângela; Passos,Rosane Klein
Fonte: Academia Brasileira de Neurologia - ABNEURO Publicador: Academia Brasileira de Neurologia - ABNEURO
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2015 EN
Relevância na Pesquisa
37.31%
Objective Hydrocephalus is one of the main complications associated with myelomeningocele (MM). This study aimed to identify clinical and ultrasonographic criteria for using ventriculoperitoneal (VP) shunts in this group of patients.Method A retrospective cohort study, based on established protocol for VP shunt implant in hydrocephalic children with MM. Parameters used to guide the indication of VP shunts included measurement of head circumference (HC), evaluation of fontanels, and measurement of lateral ventricular atrium (LVA) width by transcranial ultrasonography.Results 43 children were included in the analysis, of which 74% had hydrocephalus and required a VP shunt. These children had LVA width ≥ 15 mm, showed increased HC, or had bulging fontanels.Conclusion VP shunt is required in children with increased HC (≥ 2 standard deviation regarding age group), bulging fontanels, or LVA width of ≥ 15 mm after the closure of MM.

In utero meconium exposure increases spinal cord necrosis in a rat model of myelomeningocele

Correia-Pinto, J.; Reis, J.; Hutchins, G.; Baptista, M.; Estevão-Costa, J.; Flake, A.; Leite-Moreira, A.
Fonte: Saunders Publicador: Saunders
Tipo: Artigo de Revista Científica
Publicado em /03/2002 ENG
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Abstract BACKGROUND/PURPOSE: The rationale for in utero repair of myelomeningocele has been supported experimentally by the observation of preserved neural function after prenatal closure of surgically created defects compared with nonrepaired controls. The mechanism of injury to the exposed neural elements is unknown. Postulated mechanisms include trauma to the herniated neural elements or progressive injury from amniotic fluid exposure as gestation proceeds. A component of amniotic fluid that may contribute to neural injury is meconium. In the current study the effect of human meconium on the exposed spinal cord in a fetal rat model of myelomeningocele was examined. METHODS: Twenty time-dated pregnant rats underwent laparotomy at 181/2 days of gestation. The exposed uterus was bathed in ritrodrine for tocolysis. The amniotic cavity was opened over the dorsal midline of the fetal rat, and, under a dissecting microscope (x25), a 2- to 3-level laminectomy was performed. Under magnification (x40), the translucent dura was opened using a 25-gauge needle as a knife. Two fetuses per dam were operated on. In the control group, the amniotic fluid was restored with saline solution, whereas in the experimental group a solution of Human meconium diluted (10%) in saline was used to restore the amniotic fluid. Fetuses were harvested by cesarean section at 211/2 days' gestational age. The liveborn pups were then killed and fixed in 10% formaline. Sections 10 micrometer thick were stained with H&E and studied by light microscopy for evidence of spinal cord injury. RESULTS: Seven of 20 (35%) experimental rat pups and 6 of 20 (30%) control rat pups were liveborn. All liveborn pups had severe paralysis of the hindlimbs and tail...

Estudio de asociación de base familiar entre polimorfismos de MTHFR y mielomeningocele en Chile; Methylenetetrahydrofolate reductase polymorphisms as risk factors for myelomeningocele

Suazo, José; Vargas, Marcela; Castillo Taucher, Silvia Amelia; Zalavaria, Andrea; Blanco Castillo, Rafael Luis; Tapia, Eva; Santos, José Luis; Solar, Margarita; Rotter, Karin; Pardo, Rosa
Fonte: Universidad de Chile Publicador: Universidad de Chile
Tipo: Artículo de revista
ES
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37.31%
Artículo de publicación SciELO; Background: Mandatory fortification with folic acid (FA) was implemented in Chile in 2000. Thereafter, the rate of spina bifida decreased by 52 to 55%. Genetic abnormalities in folate metabolism may be involved in the etiology of spina bifida. Aim: To evaluate the association between myelomeningocele (MM) and c.A1298C and c.C677T polymorphisms within the coding gene for 5,10-methylenetetrahydrofolate reductase (MTHFR) in the Chilean population. Material and Methods: These polymorphisms were genotyped in 105 patients showing isolated MM, born after the onset of FA fortification, and in their parents. The transmission disequilibrium test (TDT) was performed to evaluate alterations in the transmission of both alleles and haplotypes MTHFR polymorphism. We also evaluated the presence of parent-origin-effect (POE) of alleles using the Clayton’s extension of the TDT. Results: TDT analysis showed no significant distortions in the transmission of alleles or haplotypes. Moreover, although the POE showed increased risk for maternally derived allele, this risk was not statistically significant. Conclusions: The studied variants in the MTHFR gene (c.C677T and c.A1298C) do not constitute risk factors for MM in this sample of Chilean patients and their parents.

Family-Based Association Study Between SLC2A1, HK1, and LEPR Polymorphisms With Myelomeningocele in Chile

Pardo, Rosa; Rotter, Karin; Castillo, Silvia; Rojas, Francisca; Solar, Margarita; Santos, Jose´ Luis; Tapia, Eva; Martin, Luz Maria; Suazo, Jose
Fonte: SAGE Publicador: SAGE
Tipo: Artículo de revista
EN
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37.31%
Artículo de publicación ISI; Obese/diabetic mothers present a higher risk to develop offspring with myelomeningocele (MM), evidence supporting the role of energy homeostasis-related genes in neural tube defects. Using polymerase chain reaction–restriction fragment length polymorphism, we have genotyped SLC2A1, HK1, and LEPR single-nucleotide polymorphisms in 105 Chilean patients with MM and their parents in order to evaluate allele–phenotype associations by means of allele/haplotype transmission test (TDT) and parent-of-origin effects. We detected an undertransmission for the SLC2A1 haplotype T-A (rs710218-rs2229682; P ¼ .040), which was not significant when only lower MM (90% of the cases) was analyzed. In addition, the leptin receptor rs1137100 G allele showed a significant increase in the risk of MM for maternal-derived alleles in the whole sample (2.43-fold; P ¼ .038) and in lower MM (3.20-fold; P ¼ .014). Our results support the role of genes involved in energy homeostasis in the risk of developing MM, thus sustaining the hypothesis of diverse pathways and genetic mechanisms acting in the expression of such birth defect.

Diagnosis of central nervous system infection by CSF sampling of the myelomeningocele sac as an alternative to ventricular tap

Kaplan,M.; Ucler,N.; Bayrakli,F.; Duz,B.; Erol,F.S.
Fonte: Neurocirugía Publicador: Neurocirugía
Tipo: info:eu-repo/semantics/article; journal article; info:eu-repo/semantics/publishedVersion Formato: text/html; application/pdf
Publicado em 01/06/2010 ENG
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Background. Infection significantly affects mortality and morbidity in myelomeningocele cases. Ventricular tap is the most common method performed to diagnose central nervous system (CNS) infection in myelomeningocele patients. However, the ventricular tap can cause serious trauma to the baby and to the family. Here we discuss the technique of taking a cerebrospinal fluid (CSF) sample from the sac in myelomeningocele cases. Methods. The study comprised 24 myelomeningocele patients undergoing sac repair; 7 patients in the early period and 17 in the late period (after the first 24 hours). CSF samples were taken from the sac and via ventricular tap. In all patients' samples, cell count and cultures were compared. Results. In patients who underwent early meningomyelocele repair there was no significant difference between sac and ventricular CSF. There were also no positive cultures in samples taken from both areas. In comparison, in the group submitted to late repair, the number of cells in the sac and ventricle CSF samples was over 10 in 4 of the 17 patients. The cultures from CSF samples taken from both areas were positive for E. coli. In 13 of 17 patients who were admitted to our clinic for late repair, there was no significant difference between the number of cells in the sac and in ventricular samples. Cultures taken from these patients were negative. Conclusion. Puncture of the sac represents a quicker and more convenient way to obtain CSF in myelomeningocele cases. In addition...