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The polypeptide patterns obtained by sodium dodecylsulphate-polyacrylamide gel electrophoresis of undigested and autodigested extracts from pea (Pisum sativum L.) ovaries at the early stages of development or degeneration have been studied. Development of unpollinated ovaries was stimulated by
A further case of pyruvate carboxylase deficiency, French type, with a particular clinical presentation and evolution is described. The initial neonatal symptoms started with respiratory distress, severe metabolic acidosis and a tendency to hypoglycemia. However, the clinical course was not rapidly
Isolated partial 3-methylcrotonyl-CoA carboxylase (MCC) deficiency has been described to be the cause for a distinct relatively mild clinical picture in a single patient. We describe another patient with isolated partial MCC deficiency who suffered from failure to thrive, muscular hypotonia and
Inactivity is known to induce muscle atrophy, which is associated with insulin and insulin-like growth factor-1 (IGF-1) resistance, but the associated mechanisms remain poorly defined. The hindlimb unloading model has been used to reduce muscle activity. The objective of this study was to show the
Three siblings presented in early childhood with central-nervous-system (CNS) dysfunction, candida dermatitis, keratoconjunctivitis, and alopecia. Two were studied immunologically and had absent delayed-hypersensitivity skin-test responses and absent in-vitro lymphocyte responses to candida antigen.
A 15-year-old girl with a former clinical diagnosis of cerebral palsy was found to have isolated deficiency of 3-methylcrotonyl-CoA carboxylase (MCC) on gas chromatography-mass spectrometry (GC/MS) analysis and enzyme determination. Her symptoms included marked growth retardation from birth,
Coagulation factor IX is a serine protease for which high-level expression of biologically active protein in heterologous cells is limited due to inefficient proteolytic removal of the propeptide as well as vitamin K-dependent carboxylation of multiple amino-terminal glutamic acid residues. We have
A new patient with neonatal lactic acidosis due to pyruvate carboxylase deficiency is described. Since birth he developed vomiting, hypothermia, lethargy, irritability, hypoglycemia and severe metabolic acidosis. During admission a progressive deterioration was observed. Despite different attempted
Pyruvate carboxylase (PC) has been quantified in rat liver and kidney cortex under experimental conditions that modify the gluconeogenic response in both organs: fasting, carbon tetrachloride-induced liver degeneration and alloxan-induced diabetes. Enzymatic activity has been assayed by a
A six-month-old girl with chronic lactic acidosis and neurological deterioration is described, who underwent a sudden severe decompensation during her initial neurological investigations. She responded dramatically to biotin therapy. The diagnosis of late onset multiple carboxylase deficiency due to
A patient with a severe neonatal variant of 3-methylcrotonyl-CoA carboxylase (MCC) deficiency is reported. The first child of healthy consanguineous Turkish parents presented on the second day of life with dehydration, cyanosis, no sucking, generalized muscular hypotonia, encephalopathy, respiratory
A small group of inborn errors of metabolism are manifested by intermittent cerebellar ataxia. We have previously reported a family with an inherited metabolic defect resulting in multiple carboxylase deficiencies which were responsive to pharmacological doses of biotin. Affected children presented
Two children are described who suffered from episodes of metabolic acidosis and progressive mental and motor deterioration. The patients showed periodic elevation of blood lactate, pyruvate and alanine, which was accompanied by vomiting, hypotonia or convulsions. The concentrations of lactate and
Infants with subacute necrotizing encephalopathy or Leigh's encephalopathy usually are first examined before the age of 2 years with degenerative neurologic disease with variable clinical appearance. Necrotizing lesions of the CNS occur with special predilection of the gray matter. Biochemical
A 16-month-old female infant with severe mental and motor retardation, clinically diagnosed as Leigh's encephalomyelopathy, forms the basis of this study. This infant was found to have lactic acidosis, low cerebrospinal fluid glucose, hyperalaninemia, and increased levels of urine lactate, pyruvate