Lactic dehydrogenase isoenzyme in cerebrospinal fluid of children with febrile convulsions. 2003

M Nussinovitch, and Y Avitzur, and Y Finkelstein, and J Amir, and D Harel, and B Volovitz
Department of Pediatrics "C", Schneider Children's Medical Center of Israel, Sackler School of Medicine, Tel Aviv University, Petach Tikva, Israel. moshen@post.tau.ac.il

OBJECTIVE To study the lactic dehydrogenase isoenzyme values in children with simple and complex febrile convulsions. METHODS Cerebrospinal fluid samples were collected from 115 children, 57 with simple febrile convulsions, 27 with complex febrile convulsions and 31 with no neurological or intracranial pathology (controls). Lactic dehydrogenase activity and isoenzyme levels were measured on a Hitachi analyser. RESULTS Mean total lactic dehydrogenase activity was similar in the three groups. In the control group, lactic dehydrogenase-1 was the main fraction, followed by lactic dehydrogenase-2 and lactic dehydrogenase-3; only small percentages of lactic dehydrogenase-4 and lactic dehydrogenase-5 were detected. In the febrile convulsion group, the lactic dehydrogenase-1 fraction percentage was lower and lactic dehydrogenase-2, lactic dehydrogenase-3 percentages were higher than those in the control group; and the differences were statistically significant between the control and study groups (p < 0.01). Values of lactic dehydrogenase-4 and lactic dehydrogenase-5 were similar in all three groups. CONCLUSIONS This is the first report on the lactic dehydrogenase isoenzyme pattern in the cerebrospinal fluid of patients with simple and complex febrile convulsions. The important finding that focal and general febrile convulsions are not associated with cell damage and changes in aerobic and anaerobic metabolism as lactic dehydrogenase remained unchanged. Analysis of cerebrospinal fluid lactic dehydrogenase isoenzyme levels can assist clinicians in differentiating febrile convulsions from clinical situations that might mimic them.

UI MeSH Term Description Entries
D007527 Isoenzymes Structurally related forms of an enzyme. Each isoenzyme has the same mechanism and classification, but differs in its chemical, physical, or immunological characteristics. Alloenzyme,Allozyme,Isoenzyme,Isozyme,Isozymes,Alloenzymes,Allozymes
D007770 L-Lactate Dehydrogenase A tetrameric enzyme that, along with the coenzyme NAD+, catalyzes the interconversion of LACTATE and PYRUVATE. In vertebrates, genes for three different subunits (LDH-A, LDH-B and LDH-C) exist. Lactate Dehydrogenase,Dehydrogenase, L-Lactate,Dehydrogenase, Lactate,L Lactate Dehydrogenase
D008297 Male Males
D011237 Predictive Value of Tests In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test. Negative Predictive Value,Positive Predictive Value,Predictive Value Of Test,Predictive Values Of Tests,Negative Predictive Values,Positive Predictive Values,Predictive Value, Negative,Predictive Value, Positive
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D003294 Seizures, Febrile Seizures that occur during a febrile episode. It is a common condition, affecting 2-5% of children aged 3 months to five years. An autosomal dominant pattern of inheritance has been identified in some families. The majority are simple febrile seizures (generally defined as generalized onset, single seizures with a duration of less than 30 minutes). Complex febrile seizures are characterized by focal onset, duration greater than 30 minutes, and/or more than one seizure in a 24 hour period. The likelihood of developing epilepsy (i.e., a nonfebrile seizure disorder) following simple febrile seizures is low. Complex febrile seizures are associated with a moderately increased incidence of epilepsy. (From Menkes, Textbook of Child Neurology, 5th ed, p784) Convulsions, Febrile,Febrile Seizures,Pyrexial Seizure,Febrile Convulsion Seizure,Febrile Fit,Fever Convulsion,Fever Seizure,Pyrexial Convulsion,Seizure, Febrile, Complex,Seizure, Febrile, Simple,Convulsion, Febrile,Convulsion, Fever,Convulsion, Pyrexial,Convulsions, Fever,Convulsions, Pyrexial,Febrile Convulsion,Febrile Convulsion Seizures,Febrile Convulsions,Febrile Fits,Febrile Seizure,Fever Convulsions,Fever Seizures,Fit, Febrile,Fits, Febrile,Pyrexial Convulsions,Pyrexial Seizures,Seizure, Febrile,Seizure, Febrile Convulsion,Seizure, Fever,Seizure, Pyrexial,Seizures, Febrile Convulsion,Seizures, Fever,Seizures, Pyrexial
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000080864 Lactate Dehydrogenase 5 A member of the LACTATE DEHYDROGENASES isozyme family, Lactate Dehydrogenase 5 is localized to liver and skeletal muscle cells where its expression increases in liver disease and striated muscle trauma respectively. Lactate Dehydrogenase A,Lactate Dehydrogenase-M,LDH 5,LDH-A,LDH-A4,LDH-M,LDH-M4,M4-LDH,5, LDH,LDH A,LDH A4,LDH M4,LDHA4,LDHM4,Lactate Dehydrogenase M,M4 LDH,M4LDH
D012720 Severity of Illness Index Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder. Illness Index Severities,Illness Index Severity

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