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Moebius syndrome (MBS) is a congenital cranial dysinnervation disorder (CCDD) characterized by a bilateral palsy of abducens and facial cranial nerves, which may coexist with other cranial nerves palsies, mostly those found in the dorsal pons and medulla oblongata. MBS is considered a "rare" disease, occurring in only 1:50,000 to 1:500,000 live births, with no gender predominance. Three independent theories have been described to define its etiology: the vascular theory, which talks about a transient blood flow disruption; the genetic theory, which takes place due to mutations related to the facial motor nucleus neurodevelopment; and last, the teratogenic theory, associated with the consumption of agents such as misoprostol during the first trimester of pregnancy. Since the literature has suggested the existence of these theories independently, this review proposes establishing a theory by matching the MBS molecular bases. This review aims to associate the three etiopathogenic theories at a molecular level, thus submitting a combined postulation. MBS is most likely an underdiagnosed disease due to its low prevalence and challenging diagnosis. Researching other elements that may play a key role in the pathogenesis is essential. It is common to assume the difficulty that patients with MBS have in leading an everyday social life. Research by means of PubMed and Google Scholar databases was carried out, same in which 94 articles were collected by using keywords with the likes of "Moebius syndrome," "PLXND1 mutations," "REV3L mutations," "vascular disruption AND teratogens," and "congenital facial nerve palsy." No exclusion criteria were applied.
Assuntos
Paralisia Facial , Síndrome de Möbius , Humanos , Síndrome de Möbius/genética , Síndrome de Möbius/diagnóstico , Teratogênicos/toxicidade , Nervo Facial , Mutação , DNA Polimerase Dirigida por DNA/genética , Proteínas de Ligação a DNA/genéticaRESUMO
BACKGROUND: Moebius syndrome (MS) is a rare, non-progressive, neuromuscular, congenic disease involving the oral maxillofacial region. The present study aimed to describe the oral and extraoral findings in MS patients and their comprehensive dental management. METHODS: A digital search was carried out in PubMed/MEDLINE, Scopus, Web of Science, and Google Scholar, restricted to articles in English from Jan 01, 2000, to Apr 02, 2023, following PRISMA guidelines. The methodological quality of the studies was evaluated following the JBI guidelines. Qualitative analysis was carried out on the overall result, extraoral and intraoral manifestations, considering dental management as appropriate. RESULTS: Twenty-three studies were included, and a total of 124 cases of patients with MS were analyzed. The 82% of patients with MS were younger than 15 years of age. The most frequent extraoral manifestations were blinking and visual problems (78,22%), malformations of the upper and lower limbs (58,22%), bilateral facial paralysis (12,90%), lack of facial expression (12.09%), and unilateral facial paralysis (6,45%). On the other hand, the most frequent oral manifestations were tongue deformities (78,22%), micrognathia (37,90%), labial incompetence (36,29%), cleft palate (22,87%), gothic palate (16,12%), microstomia (15,32%), anterior open bite (15,32%), dental caries (8,87%), and periodontal disease (8,06%). The majority of MS patients were treated by pediatric dentistry (60,86%), using a surgical approach (56,52%), and orthodontic and orthopedic maxillary (43,47%) followed by restorative (39,13%), and periodontal treatments (21,73%). CONCLUSIONS: This systematic review demonstrates that patients with MS present a wide variety of oral and extraoral manifestations, for which dental treatments are planned and tailored to each patient in accordance with oral manifestations. These treatments encompass problem resolution and oral health maintenance, incorporating recent techniques in managing and treating patients with MS.
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Fissura Palatina , Cárie Dentária , Paralisia Facial , Síndrome de Möbius , Criança , Humanos , Assistência OdontológicaRESUMO
Resumen ANTECEDENTES: La exposición prenatal al misoprostol puede asociarse con un espectro de defectos congénitos que varían desde anomalías del sistema nervioso central, secuencia de Moebius, defectos en la pared abdominal, defectos transversales en las extremidades hasta alteraciones fetales. Esos defectos se observan más comúnmente con esquemas de solo misoprostol para inducción del aborto. Por esos antecedentes es importante que la historia clínica de toda paciente obstétrica sea exhaustiva para permitir identificar el antecedente de la exposición prenatal luego de un aborto fallido. CASO CLINICO: Paciente de 21 años, con 32 semanas de embarazo, con diagnóstico de feto con ventriculomegalia. En la evaluación ecográfica destacó la ventriculomegalia triventricular severa, simétrica y la angulación de ambas extremidades inferiores en varo. La resonancia magnética reportó: ventriculomegalia no comunicante severa, bilateral, simétrica, por probable estenosis del acueducto de Silvio. Cariotipo 46,XY y perfil TORCH negativo. El embarazo finalizó mediante cesárea, por indicación fetal a las 35 semanas. La evaluación al nacimiento reportó: parálisis facial bilateral, macrocefalia y pie equino varo bilateral. Al volver a interrogar a la paciente refirió haber sido tratada con misoprostol en el primer trimestre del embarazo, con fines abortivos. Al descartar las alteraciones cromosómicas e infecciosas se estableció el diagnóstico de secuencia Moebius. CONCLUSIONES: La exposición prenatal al misoprostol está relacionada con la aparición de defectos vasculares en algunos fetos expuestos. Aún no se ha determinado el espectro preciso ni la estimación potencial de teratogenicidad. La historia clínica es el pilar para la asociación en estos casos.
Abstract BACKGROUND: Prenatal misoprostol exposure can be associated with a spectrum of birth defects, ranging from central nervous system abnormalities, Moebius sequence, abdominal wall defects, as well as transverse limb defects, fetal abnormalities are more commonly seen with the use of the misoprostol-only regimen for induction of abortion, such that a thorough medical history is essential to detect a history of prenatal exposure after a failed abortion. CLINICAL CASE: A 21-year-old patient, with a 32-week pregnancy, who attended the institute with a diagnosis of a fetus with ventriculomegaly, the ultrasound evaluation highlighted severe symmetric triventricular ventriculomegaly and angulation of both lower extremities in varus, magnetic resonance imaging reported severe non-communicating ventriculomegaly Symmetric bilateral, due to probable stenosis of the aqueduct of Silvio, the karyotype reported 46, XY, as well as a negative TORCH profile, however, a cesarean section was performed for fetal indication at 35 weeks, the evaluation at birth showed bilateral facial paralysis, macrocephaly and foot Bilateral equinus varus, upon re-examination the patient referred the use of misoprostol in the first trimester of pregnancy for abortive purposes, so as there were no chromosomal or infectious alterations, a Moebius sequence was suggested. CONCLUSIONS : Prenatal exposure to misoprostol is related to the appearance of vascular disruption defects in some exposed fetuses, the precise spectrum and potential estimation of teratogenicity have not yet been determined, the clinical history is the mainstay for the association in these cases.
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BACKGROUND: Moebius syndrome is a disorder characterized by facial and abducens nerve paralysis. Patients can present a wide range of upper extremity malformations. Literature focused on orthopedic manifestations of Moebius syndrome shows variability in the prevalence and clinical presentation of upper extremity anomalies. The aim of this work is to evaluate the prevalence of upper extremity malformations in patients with Moebius syndrome, clarify its various clinical presentations, and present treatment strategies for their management. METHODS: This is a retrospective, cross-sectional study including patients with Moebius syndrome and upper extremity malformations between 2012 and 2019. Data include demographic characteristics, Moebius syndrome subtype, type of malformation, affected extremity, and surgical procedures underwent. Quantitative data were recorded as mean (standard deviation [SD]), and qualitative data were expressed in terms of totals and percentages. Statistical association between Moebius syndrome subtype and development of upper extremity anomalies was evaluated using binary logistic regression. RESULTS: Twenty-five out of 153 patients (16.3%) presented upper extremity malformations (48% male). Mean age of presentation was 9.08 ± 9.43 years. Sixty-eight percent of the malformations were unilateral. The most common presentations included Poland syndrome and simple syndactyly with 8 cases each (32%), followed by 5 cases of brachysyndactyly (20%), 3 cases of amniotic band syndrome (12%), and 1 case of cleft hand (4%). No statistical association was found between Moebius syndrome subtype and odds ratio for development of upper extremity anomalies. Thirteen patients (52%) underwent reconstructive procedures. CONCLUSION: Poland syndrome and syndactyly are the most common anomalies in patients with Moebius syndrome. Patients may present with a wide range of hand malformations, each patient should be carefully evaluated in order to determine whether surgical treatment is needed and to optimize rehabilitation protocols.
Assuntos
Deformidades da Mão , Síndrome de Möbius , Síndrome de Poland , Recém-Nascido , Humanos , Masculino , Criança , Adolescente , Feminino , Síndrome de Möbius/epidemiologia , Síndrome de Möbius/cirurgia , Síndrome de Möbius/complicações , Estudos Retrospectivos , Prevalência , Estudos TransversaisRESUMO
BACKGROUND: Facial paralysis is a frequent disabling entity that causes a negative impact on the cosmetic, functional, social, psychological and economic aspects of the patient. Surgical treatment aims to restore the patient to her previous life with the fewest possible sequelae. OBJECTIVE: Describe the experience of surgical management and propose a treatment algorithm. METHOD: A retrospective study was carried out from 2017 to 2019 of the records of patients with facial nerve involvement. The variables were age, sex, etiology, affected side and procedures performed. RESULTS: 108 patients were obtained. The most frequent cause was development facial paralysis (41,8%), followed by resection of intracranial tumors (29%). A total of 225 procedures were performed, average per patient of 2.7. The most performed dynamic procedure was the gracilis-free flap (59%). The most frequent static procedures were the placement of a gold weight (24%) and the recreation of the nasogenian sulcus (13%). CONCLUSIONS: The surgical treatment algorithm will depend on the evolution time, etiology, donor nerves and state of the facial musculature. The gracilis-free flap continues to be the gold standard procedure in facial paralysis reconstruction. Static procedures are additionally required to achieve a satisfactory aesthetic and functional result.
ANTECEDENTES: La parálisis facial es una afección incapacitante que con frecuencia causa un impacto negativo en los aspectos cosméticos, funcionales, sociales, psicológicos y económicos. El tratamiento quirúrgico tiene como objetivo mejorar la calidad de vida dejando la menor cantidad posible de secuelas. OBJETIVO: Describir la experiencia del manejo quirúrgico y proponer un algoritmo de tratamiento. MÉTODO: Se realizó un estudio retrospectivo, de 2017 a 2019, de los expedientes de pacientes con afección del nervio facial. Las variables consideradas fueron la edad, el sexo, la etiología, el lado afectado y los procedimientos quirúrgicos realizados. RESULTADOS: Se obtuvieron 108 pacientes y la causa más frecuente fue la parálisis facial del desarrollo sindrómica (42%), seguida de la resección de tumores intracraneales (29%). Se realizaron 225 procedimientos, con un promedio de 2.7 por paciente. El procedimiento dinámico más realizado fue el colgajo libre de gracilis (59%). Los procedimientos estáticos más frecuentes fueron la colocación de una pesa de oro (24%) y la recreación del surco nasogeniano (13%). CONCLUSIONES: La secuencia del tratamiento quirúrgico dependerá del tiempo de evolución, la etiología, los nervios disponibles y el estado de la musculatura facial. El colgajo libre de gracilis continúa siendo el procedimiento de elección en la reconstrucción de la parálisis facial. Adicionalmente se requieren procedimientos estáticos para lograr un resultado estético y funcional satisfactorio.
Assuntos
Paralisia Facial , Retalhos de Tecido Biológico , Procedimentos de Cirurgia Plástica , Paralisia Facial/etiologia , Paralisia Facial/cirurgia , Feminino , Humanos , México , Estudos Retrospectivos , Centros de Atenção TerciáriaRESUMO
The oromandibular limb hypogenesis syndromes (OLHS) represent a group of rare conditions characterized by congenital malformations involving the tongue, mandible, and limbs. In this report, we describe a newborn girl with paralysis of abducens and facial nerves, transverse agenesis of the distal segments of the limbs, micrognathia, cleft lip and palate, and ankyloglossia superior. This observation confirms an overlap between Moebius syndrome and ankyloglossia superior syndrome with severe limb defects. The etiology of the OLHS is not clearly understood. The intriguing link between facial and limb anomalies can result from their simultaneous development from the fourth to eighth week of gestation, making both areas susceptible to the same teratogenic stimuli. There is an overlap between OLHS conditions, supporting a clustering, rather than a divided nosology and requiring an appropriate classification of these conditions. Patients with OLHS can be successfully managed using a multidisciplinary approach.
Assuntos
Anormalidades Múltiplas , Anquiloglossia , Fenda Labial , Fissura Palatina , Deformidades Congênitas dos Membros , Feminino , Humanos , Recém-NascidoRESUMO
Resumen: El síndrome de Moebius es una entidad rara que puede acompañarse de alteraciones que dificulten la anestesia, tales como dificultad de venoclisis, mayor incidencia de depresión respiratoria o de vía aérea difícil. En ocasiones se presenta de forma atípica y puede tener alteraciones del gen RyR con susceptibilidad a hipertermia maligna. Nuestro objetivo en este caso clínico es revisar la preparación necesaria para estos pacientes previa al acto anestésico y quirúrgico, centrándonos en la hipertermia maligna.
Abstract. Moebius syndrome is an uncommon illness that can be associated with different alterations related to anesthesia such as difficult peripheral venous catheterization, more respiratory failure incidence or difficult airway. When this syndrome is accompanied by atypical presentation it can be associated with RyR gen alterations and malignant hyperthermia susceptibility. Our objective with this case is to review which is the preparation required in order to a general anesthesia, focusing on malignant hyperthermia.
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BACKGROUND: Moebius syndrome is a clinical entity characterized by bilateral facial and abducens nerve palsies; other cranial nerver might be affected as well. So far, no studies have reported the electromyographic responses of the facial musculature in this group of patients. OBJECTIVE: The objective of our study is to describe the electromyographic responses of the facial muscle and the main donor nerves for facial reanimation in patients with Moebius syndrome. METHOD: We analyzed electromyographies from the facial, hypoglossal, masseterine (trigeminal) and accessory nerves from patients with Moebius syndrome treated between 2010 and 2016. Results are presented as percentages and central tendency measures. RESULTS: 24 patients were included, mean age 11.79 ± 9.39 years. The facial nerve showed complete unilateral recruitment in 4 patients, partial bilaterally in 11, 7 showed no activity bilaterally and two had unilateral inactivity. The masseterine was normal in 14 patients, had partial recruitment bilaterally in 4 and unilaterally in 4 cases. The accessory nerve was normal in 20 patients, showed partial recruitment bilaterally in 3 and unilaterally in 1 patients. The hypoglossal was normal in 22 patients, and altered in 2 cases. CONCLUSION: Patients with Moebius syndrome show several degrees of alteration in electromyographic evaluation of the facial nerve. Electromyography is a useful tool in evaluating potential motor donor nerves for facial reanimation surgery.
ANTECEDENTES: El síndrome de Moebius es una entidad clínica caracterizada por parálisis bilateral congénita del nervio facial y el abducens. Adicionalmente se pueden encontrar afectados otros pares craneales. Actualmente no existen estudios que reporten la respuesta electromiográfica de la musculatura facial en esta población. OBJETIVO: Describir la respuesta electromiográfica de la musculatura facial y de los principales nervios donadores para reconstrucción facial dinámica en pacientes con síndrome de Moebius. MÉTODO: Se analizaron electromiografías de los nervios facial, hipogloso, maseterino (trigémino) y accesorio en pacientes con síndrome de Moebius atendidos entre 2010 y 2016. Los resultados se presentan en porcentajes y medidas de tendencia central y de dispersión. RESULTADOS: Se incluyeron 24 pacientes, con una edad promedio de 11.79 ± 9.39 años. El nervio facial presentó reclutamiento unilateral completo en 4 pacientes, parcial bilateral en 11 pacientes, en 7 pacientes ausencia de reclutamiento bilateral e inactividad unilateral en 2 pacientes. El maseterino tuvo reclutamiento completo en 14 pacientes, parcial bilateral en 4 pacientes y parcial unilateral en 4 pacientes. El nervio accesorio mostró reclutamiento completo en 20 pacientes, parcial bilateral en 3 pacientes y parcial unilateral en 1 paciente. El hipogloso mostró actividad normal en 22 pacientes, parcial bilateral en 1 paciente y parcial unilateral en 1 paciente. CONCLUSIÓN: Los pacientes con síndrome de Moebius presentan alteraciones en los registros electromiográficos del nervio facial. La electromiografía permite identificar los nervios donadores para realizar la reconstrucción dinámica.
Assuntos
Eletromiografia , Músculos Faciais/fisiopatologia , Nervo Facial/fisiopatologia , Síndrome de Möbius/fisiopatologia , Cuidados Pré-Operatórios/métodos , Doenças do Nervo Abducente , Nervo Acessório/fisiopatologia , Criança , Estudos Transversais , Nervo Facial/cirurgia , Feminino , Humanos , Nervo Hipoglosso/fisiopatologia , Masculino , Nervo Mandibular/fisiopatologia , Síndrome de Möbius/cirurgia , Estudos RetrospectivosRESUMO
RESUMEN El síndrome de Moebius es un trastorno polimalformativo no progresivo que se caracteriza por parálisis facial congénita. Se define como una "parálisis congénita de los núcleos de los pares craneales VI y VII, cuyo espectro clínico es variable y se asocia a múltiples malformaciones óseas y musculares. Es poco frecuente y de etiología vascular, genética o multifactorial. El trabajo, basándose en los fundamentos teóricos más actualizados, pretendió describir las manifestaciones clínicas del síndrome de Moebius y su posible etiología, a propósito de un caso. Se trató de un paciente de 11 años de edad, que al nacimiento presentó asimetría facial, desviación de la comisura labial hacia la izquierda, boca semiabierta, lagrimeo constante y pabellón auricular derecho malformado. Por ser una entidad clínica poco conocida, se expuso el presente caso, portador de un síndrome de Moebius incompleto de causa vascular y multifactorial (AU).
ABSTRACT Moebius syndrome is a non-progressive poli-formative disorder characterized by facial congenital paralysis. It is defined as a congenital paralysis of the VI and VII cranial nerves nuclei, the clinical spectrum of which is variable and associated to several bone and muscular malformations. It is few frequent and has vascular, genetic or multifactorial etiology. This work, based on more updated theoretical fundaments, pretended to describe the clinical manifestations of the Moebius syndrome and its possible etiology on the purpose of a case. It is the case of a patient, aged 11 years, who presented facial asymmetry, lips commissure deviation to the left, semi-opened mouth, constant lagrimeo and deformed right auricular pavilion (pabellon auricular). Because it is a little known clinical entity, this case of a patient having an incomplete Moebius syndrome of vascular and multifactorial cause was presented (AU).
Assuntos
Humanos , Masculino , Criança , Oftalmologia , Astigmatismo/diagnóstico , Anormalidades Congênitas , Síndrome de Möbius/diagnóstico , Paralisia Facial/diagnóstico , Hiperopia/diagnóstico , Astigmatismo/genética , Modalidades de Fisioterapia , Síndrome de Möbius/complicações , Síndrome de Möbius/etiologia , Síndrome de Möbius/genética , Síndrome de Möbius/epidemiologiaRESUMO
Resumen: Introducción: el síndrome de Moebius es una parálisis congénita del VII par craneal que puede asociarse a la afectación de otros nervios craneales. Se presenta como trastorno del desarrollo con debilidad facial congénita, no progresiva y estrabismo convergente con limitación de la abducción de uno o ambos ojos, estas características se atribuyen a la aplasia del sexto y séptimo par craneal. La prevalencia se estima en 1/250.000 nacidos vivos con igual incidencia en ambos sexos. Objetivo: documentar el diagnóstico y la evolución de un paciente con síndrome de Moebius. Caso clínico: paciente masculino de 14 meses de edad, hondureño, al examen físico presentó: fascies no expresivas, estrabismo convergente, escaso parpadeo, baja implantación de pabellones auriculares, micrognatia, labio superior en carpa, intenta sonreír con leve contracción de la comisura labial, pie equino varo bilateral. Se diagnosticó síndrome de Moebius y brindó consejería genética a padres y terapia de rehabilitación y estimulación del lenguaje. Discusión: el síndrome de Moebius es una enfermedad poco común, el reconocimiento de esta es importante debido a que su etiología, complicaciones y tratamiento se encuentran en constante estudio. Por sus secuelas cognitivas es una enfermedad que precisa manejo multidisciplinario.
Summary Introduction: Moebius syndrome is a congenital paralysis of the VII cranial nerve and may be associated with the involvement of other cranial nerves. It presents as a developmental disorder with congenital, non-progressive facial weakness and convergent strabismus with limited abduction of one or both eyes, these characteristics are attributed to the aplasia of the sixth and seventh cranial nerves. Prevalence is estimated at 1 / 250,000 live births with equal incidence in both sexes. Objective: to document the diagnosis and evolution of a patient with Moebius Syndrome. Case report : a 14-month-old patient, male, Honduran, on physical examination presented: non-expressive facies, convergent strabismus, poor blinking, low implantation of auricular pavilions, micrognathia, upper lip in carp, while trying to smile presented slight contraction of the labial commissure and bilateral varus equine foot. He was diagnosed with Moebius Syndrome, genetic counseling was provided to the parents and the patient received rehabilitation therapy and speech stimulation. Discussion: Moebius syndrome is an uncommon disease, recognition of this syndrome is important because its ethiology, complications and treatment are in constant study. Due to the cognitive sequelae, it is a disease that requires multidisciplinary management.
RESUMO
Anomalía congénita caracterizada por afectación del VI y VII par craneano que determina una parálisis facial, uni o bilateral, aunque el compromiso puede ser más extenso. Se describe paciente masculino de 4 años de edad, obtenido por cesárea, con antecedentes de amenaza de aborto en cuatro oportunidades a partir de la décima semana de gestación; en el período de lactancia presentó dificultad para la succión y deglución. Al examen físico, facies inexpresiva, boca en carpa, parálisis facial bilateral, estrabismo, nistagmos, puente nasal ancho, micronagtia, paladar hendido, pie equino varo bilateral y sindactilia en mano derecha. Se relaciona con eventos y fármacos (misoprostol) que puedan producir una disrupción vascular e insuficiencia placentaria. Se sugiere como causa, la afección hipóxico/isquémica transitoria del feto debido a alteraciones en la circulación materno-fetal durante primer trimestre de embarazo, por amenaza de aborto y probablemente exposición a teratógenos como el misoprostol.
Congenital anomaly characterized by involvement of the VI and VII cranial nerve that causes a bilateral facial paralysis, or uni, but the commitment may be longer. Is described, male patient aged 4, obtained by cesarean section with a history of threatened abortion four times from the tenth week of pregnancy; in lactancy, presented difficulty in sucking and swallowing. On physical examination, expressionless face, mouth in tents, bilateral facial paralysis, strabismus, nystagmus, broad nasal bridge, micrognathia, cleft palate, clubfoot and bilateral syndactyly in right hand. It relates to events and drug (misoprostol) that produce vascular disruption and placental insufficiency. In this patient had been suggested as a cause transient hypoxic / ischemic disease of the fetus due to alterations in maternal-fetal circulation during early pregnancy, threatened abortion and likely exposure to teratogens such as misoprostol.
Assuntos
Humanos , Masculino , Pré-Escolar , Síndrome de Möbius , Anormalidades Congênitas , Paralisia FacialRESUMO
Introducción: La secuencia Moebius se caracteriza por el compromiso congénito de los nervios motor ocular externo y facial, y se puede asociar al compromiso de otros pares craneales y a otros defectos congénitos. Su etiología es multifactorial y no bien definida, actualmente la teoría más aceptada es la disrupción vascular durante el desarrollo del romboencéfalo. Su incidencia exacta se desconoce, pero impresiona estar en aumento y asociada a la exposición prenatal a teratógenos. Objetivos: Analizar las historias clínicas de 30 pacientes con secuencia Moebius y las características de su compromiso ocular. Materiales y métodos: Estudio retrospectivo, transversal, observacional y descriptivo. Se analizaron 30 historias clínicas de pacientes con secuencia Moebius atendidos por vez primera entre el mes de Julio de 1999 y Junio de 2012 por el servicio de Oftalmología del Hospital Garrahan. Resultados: Se estudiaron 30 pacientes 15 de sexo femenino y 15 de sexo masculino, dentro de los antecedentes maternos 7 madres refirieron ingesta de misoprostol y 4 tuvieron metrorragias durante el primer trimestre de embarazo. Todos los pacientes tuvieron compromiso del VII nervio; en 20 pacientes fue bilateral y simétrico; y en los restantes asimétrico. Todos los pacientes tuvieron compromiso del VI nervio bilateral, a algunos de los cuáles se les efectuó cirugía de estrabismo otros están en plan de cirugía y unos pocos no la requirieron por presentar fijación de ambos ojos en posición primaria de la mirada. Conclusión: la secuencia Moebius es una rara patología genética y congénita multifactorial y de compromiso multisistémico que ha visto incrementada su frecuencia desde el uso de ciertos fármacos teratógenos y que obliga a una intervención quirúrgica precoz de neuroortopedistas, oftalmólogos, cirujanos plásticos y control clínico multidisciplinario para brindarles a estos niños las mejores posibilidades de desarrollo funcional y estético reparador (AU)
Introduction: Moebius syndrome is characterized by congenital palsy of the external and facial oculomotpr nerves, and may be associated with involvement of other cranial nerves and congenital defects. The etiology is multifactorial and not well defined. Currently, the most widely accepted theory is a rhombencephalic maldevelopment. The true incidence of Moebius syndrome is unknown, but it seems to be increasing associated with prenatal exposure to teratogenic factors. Objectives: To analyze the clinical charts of 30 patients with Moebius syndrome assessing ocular involvement. Material and methods: A retrospective, cross-sectional, observational study. Thirty clinical charts of patients with Moebius syndrome that were first seen at the Department of Ophthalmology of Hospital Garrahan between July 1999 and June 2012 were assessed. Results: Of the 30 patients 15 were female and 15 male. Maternal history showed seven mothers that received misoprostol and four that had metrorrhagia in the first trimester of pregnancy. All patients had VII cranial nerve involvement; the involvement was bilateral and symmetric in 20 and asymmetric in the remaining patients. All patients had bilateral VI nerve involvement, some of whom underwent surgery for strabismus, others are on the list for surgery, and a few do not require surgery because of fixation of both eyes in primary gaze position. Conclusion: Moebius syndrome is a rare multifactorial genetic and congenital pathology with multisystemic involvement and increased incidence because of the use of teratogenic drugs requiring early surgical intervention by neuroorthopedic and plastic surgeons, and ophthalmologists, and a multidisciplinary follow-up to provide these children with the best possibilities for functional development and aesthetic repair (AU)
Assuntos
Humanos , Lactente , Pré-Escolar , Criança , Exotropia , Oftalmopatias/etiologia , Paralisia Facial , Misoprostol/efeitos adversos , Síndrome de Möbius/complicações , Síndrome de Möbius/etiologia , Estudos Transversais , Estudos Observacionais como Assunto , Estudos RetrospectivosRESUMO
El misoprostol, un análogo sintético de la prostaglandina E1, se ha asociado a un aumento en el riesgo de ocurrencia del síndrome de Moebius (parálisis congénita del VII par craneal que puede estar asociada a compromiso de otros pares craneales o incluso de otros sistemas) y defectos de las extremidades de tipo transversal-terminal en embarazos en que las madres utilizan este medicamento durante el primer trimestre de gestación. Se ha propuesto la perturbación vascular como mecanismo teratogénico del misoprostol. La asociación VACTERL es la coocurrencia estadísticamente no aleatoria de defectos vertebrales, anomalías vasculares, atresia anal, anomalías cardíacas, fístula traqueoesofágica con atresia esofágica, displasia renal y radial y anomalías de las extremidades diferentes a las radiales. No existe evidencia de una causa unificadora de la coocurrencia de las malformaciones VACTERL, por lo que esta condición se sigue denominando asociación y no síndrome. Se presenta el caso de una niña recién nacida con asociación VACTERL y síndrome de Moebius asociados a exposición prenatal a misoprostol en el primer trimestre del embarazo y, dado el mecanismo teratogénico del misoprostol, se propone un origen vascular de la asociación VACTERL.
Misoprostol, a synthetic analogue of prostaglandin E1, has been associated with an increased risk of occurrence of the Moebius syndrome (congenital paralysis of the seventh cranial nerve that may be associated with involvement of other cranial nerves or of other systems) and crossterminal limb defects in pregnancies in which mothers used this drug during the first trimester of pregnancy. Vascular disruption has been proposed as a teratogenic mechanism of misoprostol. The VACTERL association is the statistically non-random co-occurrence of vertebral defects, vascular anomalies, anal atresia, cardiac abnormalities, tracheo-esophageal fistula with esophageal atresia, radial and renal dysplasia, and other limb anomalies. There is no evidence for a unifying cause for the co-occurrence of VACTERL malformations, so this condition is still called an association and not a syndrome. We report the case of a newborn girl with VACTERL association and Moebius syndrome associated with prenatal exposure to misoprostol in the first trimester of pregnancy. Given the teratogenic mechanism of misoprostol, we propose a vascular origin for VACTERL association.
Assuntos
Feminino , Recém-Nascido , Anormalidades Congênitas , Recém-Nascido , Misoprostol , Síndrome de Möbius , Cuidado Pré-NatalRESUMO
Moebius syndrome (MS) is a congenital syndrome characterized by unilateral or bilateral aplasia of the VI and VII cranial nerves, with consequent convergent strabismus and bilateral peripheral facial paralysis. This syndrome might be associated with diurnal excessive sleepiness and muscular hypotony, mimetizing in this manner, narcolepsy. The diagnostic criteria for narcolepsy depend on the presence of REM sleep during the day. As with patients with MS we do not have ocular movements due to the VI nerve paralysis, the absence of horizontal ocular movements might make it difficult to confirm narcolepsy in these patients. The common clinical characteristics of these patients are due to a possible impairment of the same structures that are affected in the central nervous system. However, the mechanism by which it occurs remains to be fully understood. Further electrophysiological researches are necessary to better clarify the association of these two diseases. The objective of this dissertation is to describe and discuss a case of Moebius syndrome with diurnal excessive sleepiness as a differential diagnosis for narcolepsy.
RESUMO
BACKGROUND: Moebius syndrome (MS) is a rare congenital condition that is characterised by facial hypomimia and congenital strabismus caused by complete or partial impairment of the 6th and 7th cranial nerves. MS may be further associated with other nerves or malformations, mainly involving the extremities. The objective of this study was to quantify the decrease in oral motor performance in people with MS compared with normoreactive individuals using the Oral Motor Assessment Scale (OMAS). METHODS: The study group comprised 33 subjects between the ages of 2 and 20 years (average age: 10 ± 5 years) with MS along with 46 age- and gender-matched control subjects. RESULTS: The study group displayed a lower average functional score than the control group (P < 0.0001). A significant lack of lip closure (P = 0.03) and anterior lingual seal during swallowing (P = 0.03) occurred in the study group; in most cases, the individuals with MS were classified as 'subfunctional'. In addition, individuals with MS in the older age group displayed better functional scores than those in the younger group (P = 0.05). CONCLUSIONS: Functional damage to oral motor function in individuals with MS is evident, but differs among patients with respect to severity and the movements that are compromised. However, overall, improvements in the functional patterns of these individuals can be observed as they mature in age.
Assuntos
Músculos da Mastigação/fisiopatologia , Síndrome de Möbius/fisiopatologia , Boca/fisiopatologia , Desempenho Psicomotor/fisiologia , Adolescente , Fatores Etários , Estudos de Casos e Controles , Criança , Pré-Escolar , Deglutição/fisiologia , Feminino , Humanos , Lábio/fisiopatologia , Masculino , Mandíbula/fisiopatologia , Mastigação/fisiologia , Movimento , Comportamento de Sucção/fisiologia , Língua/fisiopatologia , Adulto JovemRESUMO
BACKGROUND: Moebius syndrome (MBS) is an infrequent disease, having an incidence of 1 in 10,000 births, mainly characterized by a congenital bilateral facial paralysis due to an agenesia of the sixth and seventh cranial nerves. In addition, orofacial and limb anomalies are frequently found in these patients. The diagnosis is fundamentally based on different clinical manifestations of the disorder. CLINICAL CASE: a female newborn with the clinical picture of Moebius syndrome is presented, and genetic or environmental aspects are discussed. Since the use of misoprostol for abortion and inducing uterine activity in combination with NSAIDs, the number of newborns with MBS associated with this drug has increased. Nowadays, either genetic or environmental factors are associated with MBS. CONCLUSIONS: it is necessary that the general and medical community be aware of the risk of teratogenic effects of misoprostol, and the usefulness of genetic counseling whenever there is a newborn with Moebius syndrome.
Introducción: el síndrome de Moebius (MBS) es una enfermedad poco frecuente que tiene una incidencia de 1 por cada 10 000 nacimientos. Se caracteriza principalmente por parálisis facial bilateral congénita debido a una agenesia de los núcleos de los nervios craneales del VI y VII par. Además, es frecuente encontrar anomalías orofaciales y de extremidades torácicas y pélvicas en estos pacientes. El diagnóstico se basa fundamentalmente en las distintas manifestaciones clínicas del trastorno. Caso clínico: niña recién nacida con el cuadro clínico de síndrome de Moebius. Se discuten los aspectos genéticos y medioambientales asociados a esta patología. Desde la introducción del misoprostol y su uso inadecuado como agente abortivo e inductor de actividad uterina, y en combinación con antiinflamatorios no esteroideos, se ha observado un incremento en la frecuencia de recién nacidos con síndrome de Moebius asociados al uso de este medicamento. Actualmente, el factor genético y el medioambiental se encuentran asociados a este síndrome. Conclusiones: es importante alertar a la comunidad médica y a la población en general acerca del riesgo teratogénico del misoprostol y de la importancia del consejo de los genetistas cuando nace un paciente con síndrome de Moebius.
Assuntos
Síndrome de Möbius/diagnóstico , Feminino , Humanos , Recém-NascidoRESUMO
Introducción: El síndrome o secuencia de Moebius se caracteriza por la afectación del nervio facial y nervio abducens y puede estar asociado a defectos congênitos orofaciales y de las extremidades. Adicionalmente en las dos últimas décadas se han reortada una posible asociación con exposición prenatal a misoprostol. Objetivo: Presentar un caso de síndrome de Moebius con cardiopatía compleja (comunicación interventricular y pseudocoartación de aorta) asociado a exposición prenatal a misoprostol. Caso clínico: Paciente de 5 años quien consulta por antecedente de retardo en el desarrollo psicomotor, anomalías craneofaciales, cardiacas y de las extremidades, con antecedente de exposición prenatal a misoprostol, a quien se le diagnóstica síndrome de Moebius. Conclusiones: Aunque la etiología de este síndrome no es clara, un mecanismo fisiopatológico involucrado es el de la hipoxia que puede ser secundario a la exposición prenatal a misoprostol.
Introduction: Moebius syndrome/sequence is characterized by facial and abducens nerve damage and may be associated with congenital orofacial and limb defects. Additionally, in the last two decades, a possible association with prenatal exposure to misoprostol has been reported. Objective: To present a case of Moebius Syndrome with complex heart disease (ventricular septal defect and pseudocoarctation of the aorta) associated with prenatal exposure to misoprostol. Case report: A 5 year old patient diagnosed with Moebius Syndrome who consulted specialists due to psychomotor retardation, craniofacial, heart and limb defects, and with a history of prenatal exposure to misoprostol is presented. Conclusions: Although the etiology of this syndrome is not clear, hypoxia is a pathophysiological mechanism involved, which can be secondary to prenatal exposure to misoprostol.
Assuntos
Humanos , Feminino , Pré-Escolar , Abortivos não Esteroides/efeitos adversos , Comunicação Interventricular/induzido quimicamente , Misoprostol/efeitos adversos , Síndrome de Möbius/induzido quimicamente , Coartação Aórtica/induzido quimicamente , Sindactilia/induzido quimicamente , TeratogênicosRESUMO
La parálisis facial y del nervio abducens congénita fue descrita como entidad clínica en 1888. Esta definición se amplió a parálisis facial unilateral o bilateral completa o incompleta, limitación de abducción ocular, disfunción de otros pares craneales, defectos oro-faciales, músculoesqueléticos y del desarrollo. Los criterios de diagnóstico varían y la entidad sigue siendo subdiagnosticada. El objetivo de este trabajo es caracterizar el cuadro clínico de pacientes con diagnóstico de Síndrome de Moebius, a través de la revisión de seis casos en control en dos Policlínicos de Neurología Infantil. En este grupo, fueron motivo de consulta: falta de esfuerzo respiratorio, hipomimiafacial, trastorno de alimentación. En dos casos hubo uso de misoprostrol durante el embarazo. Los hallazgos del examen incluyeron parálisis facial bilateral (5), unilateral (1), alteración bilateral de abducción ocular (6). Otras malformaciones asociadas fueron: paladar alto, microretrognatia, fisurapalatina, criptorquidia, polidactilia bilateral y pie bot. El conocimiento extendido de las características mínimas para el diagnóstico y de la variedad de manifestaciones de el Síndrome de Moebius, facilitan su reconocimiento y tratamiento oportuno.
Congenital facial and abducens nerves palsy were first described as a clinical entity in 1888. Later the definition was expanded to unilateral or bilateral facial palsy, limitation of ocular abduction, other cranial nerves involvement, orofacial, musculoskeletal or developmental defects. Diagnostic criteria vary among authors and the condition remains probably underdiagnosed. The aim of this study is to characterize the clinical features of Moebius Syndrome in a group of six patients diagnosed and controlled at two Child Neurology Outpatients Clinics. In this group, the main complaint at first consultation was: lack of respiratory effort, facial hypomimia, eating disorder. The use of misoprostol during pregnancy was identified in two cases. Findings on physical examination included bilateral (5) and unilateral (1) facial palsy, bilaterally impaired conjugate gaze (6).Other associated findings were: high palate, microretrognathia, cleft palate, polydactyly, bilateral cryptorchidism and clubfoot. The extended knowledge of minimal criteria required for Moebius Syndrome diagnosis, as well as other associated features, will facilitate recognition and timely treatment.
Assuntos
Humanos , Masculino , Feminino , Recém-Nascido , Lactente , Pré-Escolar , Criança , Síndrome de Möbius/diagnóstico , Síndrome de Möbius/fisiopatologia , Paralisia Facial , Misoprostol/efeitos adversos , Nervos Cranianos/anormalidades , Estudos Retrospectivos , Síndrome de Möbius/etiologiaRESUMO
Este artigo coloca em perspectiva a controvérsia entre a associação do uso de misoprostol para aborto e teratogenicidade, encontrada em estudos do tipo relato de caso, e a consagração do uso de medicamentos à base do fármaco na área médico-obstétrica e em documentos normativos nacionais e internacionais que regulam o registro e a circulação de produtos farmacêuticos. Através do método monográfico, foram revisados, sistematizados e analisados documentos oficiais da Anvisa, Ministério da Saúde e Organização Mundial da Saúde sobre o uso do misoprostol, bem como 68 artigos do tipo relato de casos clínicos, publicados em periódicos científicos nacionais, que associam aborto, misoprostol e teratogenicidade. A interdição legal do aborto impede a prescrição e o uso adequados de uma droga que produz efeitos eficazes e seguros como o misoprostol. Assim, o grande malefício à saúde de mulheres está ligado não a características intrínsecas ao fármaco, mas a argumentos morais que representam descaso e desrespeito aos direitos fundamentais de mulheres.
This article puts into perspective the controversy between the association of the use of misoprostol for abortion and teratogenicity studies of the type found in a case report. The use of herbal medicinal drugs and the medical-obstetric and national and international norms governing the registration and circulation of pharmaceutical products were examined. Official documents of ANVISA, the Ministry of Health and the World Health Organization on the use of misoprostol, as well as 68 articles such as case reports published in national journals, linking abortion, misoprostol and teratogenicity were reviewed, systematically filed and analyzed using the monographic method. The legal prohibition of abortion prevents the proper prescription and use of a drug such as misoprostol that is both safe and effective. Thus, the danger for the health of women is linked not to the intrinsic characteristics of the drug, but to the moral arguments that constitute negligence and disregard for the fundamental rights of women.