Neuron-specific Enolase In Children Research Articles

NEURON-SPECIFIC ENOLASE AS A MARKER OF PERINATAL CENTRAL NERVOUS SYSTEM DAMAGE IN CHILDREN WITH BRONCHIAL ASTHMA

One of the most common childhood diseases that affects the quality of life of patients and their families, which in severe cases leads to disability, is bronchial asthma (BA). The results of recent studies show that the majority of children with bronchial asthma have a history of perinatal damage to the central nervous system (CNS), which increases the risk of developing bronchial asthma in children of preschool age by 3.4 times. Particular attention of researchers is drawn to the study of the diagnostic and prognostic significance of biochemical markers of neuronal damage in fetuses and newborns, in particular, neuron-specific enolases. In this regard, it is of interest to study the level of neuron-specific enolase in children with asthma who suffered perinatal damage to the central nervous system. KEYWORDS: bronchial asthma, perinatal damage, central nervous system, newborns, adolescents, neuron-specific enolase.

Neuron Specific Enolase in Children with Diabetic Ketoacidosis: Does it Correlate with Impaired Consciousness and Disease Severity?

Background: Diabetes ketoacidosis (DKA) is the leading cause of death in children with diabetes, especially when it is complicated by cerebral edema. The predictors of CNS dysfunction/injury are largely unknown. In many neurological disorders, neuron-specific enolase (NSE) is a marker of neuronal damage. Objective: This study aimed to investigate the role of serum neuron-specific enolase as a marker of neuronal damage in patients with DKA. Patients and methods: A cross-sectional study with 90 DKA patients (aged 9.58 ± 2.89 years) presenting to Pediatric Intensive Care Unit (PICU), Children Hospital Zagazig University. Patients subjected to clinical history and examination including Glasco coma scale (GCS), blood glucose, serum electrolytes, blood PH and computed tomography of the brain for children with disturbed consciousness. Blood NSE at admission (baseline point) and after 24 hours of starting treatment of DKA (2-time points). Results: There was a significant difference between NSE level on admission and NSE level 24 hours after start of treatment. Patients with low GCS scores had higher serum NSE at baseline and 2-time points than those with normal CGS (P=0.001; P=0.053). Patients with moderate and severe DKA had higher NSE at baseline and 2-time points in comparison with those with mild DKA (P=0.001; P=0.098). Conclusions: Children with moderate to severe DKA and impaired consciousness had higher serum NSE. The high levels of NSE in patients with abnormal GCS, in the absence of cerebral edema on brain imaging indicate that NSE is a reliable marker of neuronal injury.

Neuron-specific enolase as a diagnostic marker of chronic gastroduodenitis in children

Objective: to assess the nature of changes in the level of neuron-specific enolase (NSE) in children suffering from chronic gastroduodenitis, depending on the severity of the disease, gender and physical development indicators.Materials and methods. The study group included 154 children aged 8–15 years with chronic gastroduodenitis. The main group includes children with superficial gastroduodenitis (group I) and erosive gastroduodenitis (group II). The control group consisted of 56 healthy children. All children underwent an assessment of physical development. The serum NSE level was determined by enzyme-linked immunosorbent assay. It was revealed that the main parameters of the physical development of children from the control group exceeded the values of similar parameters of children of the main group. High NSE values were established in children with chronic gastroduodenitis in comparison with the control (p≤0.01). The NSE level in boys exceeded the value of the indicator in girls in the main group and in the control group. The level of NSE in girls of the main group exceeded the value of NSE in healthy girls (p≤0.05). Studying the level of NSE taking into account gender and the severity of the pathological process revealed higher rates in boys with erosive gastroduodenitis compared with the control group (p≤0.05). In the group of children with erosive gastroduodenitis, higher NSE rates were found in boys compared with girls (p<0.05).Conclusions: A high level of NSE in children with erosive gastroduodenitis and revealed gender differences in NSE concentrations in blood serum indicate the possible role of this indicator in the development of severe forms of the disease and do not exclude the possible association of the effects of this enzyme with the function of sex hormones. The quantitative values of NSE for predicting the development of chronic gastroduodenitis in children are established.

Could the Implantation of Dextranomer/Hyaluronic Acid Cause the Elevation of Neuron-Specific Enolase in Children Treated for Vesicoureteral Reflux?

Background: Dextranomer/hyaluronic acid copolymer (Dx/HA) has been the most widely used bulking agent for the endoscopic treatment of vesicoureteral reflux. Case presentation: Here we report on a case of an 18-month-old male who underwent endoscopic treatment with Dx/HA for persistent high-grade unilateral vesicoureteral reflux (VUR). Three months later, due to the reappearance of contralateral VUR and indicated endoscopic treatment, a second cystoscopy was performed. A submucosal, well-vascularized mass localized on the left trigone and anteromedially to the left orifice was noted. Since it differed from the other similar implants previously detected on cystoscopy, it was misdiagnosed with a bladder tumor, indicating further evaluation. Extensive laboratory and imaging studies revealed normal findings, apart from high levels of neuron-specific enolase (NSE). A hypothesis made at that point was that the elevated level of NSE is due to the implantation of the Dx/HA. To test the hypothesis, two other healthy children previously treated with a Dx/HA implant were identified and their NSE levels measured. In both cases, the levels of NSE were elevated. Conclusion: The presented cases revealed that elevated levels of NSE are most likely due to a previous implantation of Dx/HA. This observation should be taken into consideration whenever there is a tentative diagnosis of bladder tumor following the endoscopic treatment of VUR with Dx/HA in a child.

Increase of plasma S100B and neuron-specific enolase in children following adenotonsillectomy: a prospective clinical trial.

S100B protein and neuron-specific enolase (NSE) can be considered the markers of cerebral injury. To our knowledge the association of general anesthesia for elective non-cardiac surgery in children with these markers has not been studied before. The goalof this study was to find out whether these markers change after adenotonsillectomy with general anesthesia. The secondary goal was to determine whether different types of anesthesia, gender, age and body mass index are associated with the change of S100B and NSE after adenotonsillectomy with general anesthesia. This study was designed as a prospective clinical trial. We did a simple pre-post experiment with no control group. In 59 children (aged 6-13, ASA I-II) undergoing adenotonsillectomy and randomized to TIVA or inhalational general anesthesia, plasma S100B and NSE were measured during anesthesia before and after the surgery which lasted a median (interquartile range) of 16.5 (13.0-20.0)min. S100B and NSE assays were performed using the electrochemiluminescence immunoassay. Significance of the differences was assessed by two-tailed asymptotic Wilcoxon signed rank test. Main outcome measures were differences in the levels of S100B and NSE before and after the general anesthesia and surgery. There were significant increases in S100B and NSE levels after the surgery. S100B was increased by 38% (P<0.001) and NSE was increased by 10% (P<0.001). Increase of S100B was significantly negatively associated with age (P=0.023). We have not found significant association of S100B and NSE with any other of the monitored variables. The values of neurological biomarkers S100B and NSE were significantly increased after general anesthesia for elective adenotonsillectomy in children.

Research of the serum level of neuron⁃specific enolase in children with various types of seizure

Objective To explore the relevance between the level changes of serum neuron⁃specific enolase (NSE) and neuronal damage in various seizure types of children with epilepsy. Methods According to the classification criteria of seizure types formulated by International League Against Epilepsy (ILAE) in 1981, 190 children with epilepsy were enrolled including tonic⁃clonic seizure group (41 cases), tonic seizure group (34 cases), clonic seizure group (22 cases), myoclonic seizure group (12 cases), atonic seizure group (17 cases), absence seizure group (22 cases), simple partial seizure group (21 cases) and complex partial seizure group (21 cases), and 64 healthy children were enrolled as control group. The long⁃ range vedio⁃electroencephalogram (VEEG) was operated and the blood samples were collected from these cases within 72 h after their seizures. Results The serum NSE levels of epileptic children were significantly higher than control group (P = 0.000). Among these seizure groups, serum NSE in myoclonic seizure group [(32.42 ± 6.62) ng/ml] was significantly higher than the other types, except for tonic⁃clonic seizure group (P = 0.062). There was no significant difference among the other types (P > 0.05, for all). According to rank correlation analysis, there was positive corrlation between serum NSE levels and VEEG abnormal intensity (rs = 0.613, P = 0.000). Conclusion The serum NSE were markedly increased in children with epilepsy after seizures, suggesting that a certain degree of neuronal damage may result from seizures; the higher NSE levels were, the more serious neuronal damage caused by epileptiform discharges was. The serum NSE levels in myoclonic seizure group and tonic⁃clonic seizure group were significantly higher than other seizure types, indicating the two kinds of seizures may result in greater neuronal damage. DOI：10.3969/j.issn.1672⁃6731.2012.05.013

Prolonged Elevation of Serum Neuron-Specific Enolase in Children After Clinical Diagnosis of Brain Death

To elucidate the time course of neuronal cell death after the clinical criteria for brain death are met, the authors reviewed serial changes of serum neuron-specific enolase levels in 3 children (age range, 3-15 years) clinically diagnosed as brain dead due to cardiopulmonary arrest. All patients survived for more than 2 months after brain death. Children with brain death had higher peak neuron-specific enolase values (1069-2849 ng/mL) than did 3 control children (256-1800 ng/mL) who did not become brain dead but had poor neurological outcome (1 death, 2 vegetative state) after cardiopulmonary arrest. A major finding is that children with brain death showed persistent elevation of neuron-specific enolase at 4 weeks (>400 ng/mL) and 8 weeks (>50 ng/mL) after cardiopulmonary arrest, in comparison with 2 surviving patients without brain death (<50 ng/mL at 4 weeks). This prolonged elevation of neuron-specific enolase suggests that total brain necrosis might not be present at the time of clinical diagnosis of brain death.

Serum neuron-specific enolase in children's cancer.

To test its diagnostic potential and sensitivity in paediatric malignancy, serum NSE was measured at diagnosis in 191 children with solid tumours and 25 with acute leukaemia. In stages I + II, III + IV and IVs neuroblastoma median levels were 18.0, 91.0 and 24.0 ng ml-1 respectively. For Wilms' patients, median values for stages I, II, III and IV disease were 16.6, 18.0, 29.0 and 47.0 ng ml-1 respectively. High levels of NSE were also found in patients with other types of tumour. Children in clinical remission after treatment for neuroblastoma invariably had normal NSE levels (mean +/- s.d. = 9.2 +/- 3.0 ng ml-1) even though the majority had radiologically identifiable residual disease. The values rose when relapse was radiologically or clinically obvious. We conclude (a) that, though levels of greater than 100 ng ml-1 are highly suggestive of advanced neuroblastoma, caution should be exercised in using serum NSE as a diagnostic test in children with cancer and (b) that serum NSE levels are not a sensitive index of residual neuroblastoma in patients, with initially elevated levels, that are receiving treatment.

Serum neuron-specific enolase in children with neuroblastoma. (Relationship to stage and disease course): P.M. Zelter, P.J. Marangos, A.E. Evans, et al. Cancer 57:1230–1234, (March), 1986

Serum neuron-specific enolase in children with neuroblastoma. (Relationship to stage and disease course): P.M. Zelter, P.J. Marangos, A.E. Evans, et al. Cancer 57:1230–1234, (March), 1986

Serum neuron-specific enolase in children with neuroblastoma. Crelationship to stage and disease course

Serum neuron-specific enolase in children with neuroblastoma. Crelationship to stage and disease course