Azul de cresil brilhante (BCB) foi eletropolimerizado sobre a superfície de um eletrodo de carbono líquido iônico (CILE) por voltametria cíclica de varredura na faixa de potencial de –0,5 a 1,0 V. CILE foi preparado usando o 1-etil-3-metil-imidazólio tetrafluoroborato ([EMIM]BF4) como modificador. Um filme polimerico estável de BCB foi obtido no CILE com aparecimento de um par de picos redox. A...

A 20-year-old splenectomizedwomanwith hemolytic anemia, diagnosed at the age of 3 years with congenital dyserythropoietic anemia type I, was referred to our institution for re-examination of 2 unusual features: high red blood cell (RBC) pyruvate kinase (PK) activity and methemoglobinemia. On examination, she showed 3.5% methemoglobin and unusually high PK activity (45.0 U/gHb). Other RBC enzyme...

UNLABELLED In fetal post-mortem examinations of the Central Nervous System, any lesions must be carefully detected and identified in order to determine their etiology. Common abnormalities found in a fetal brain can be ascribed to incomplete or defective neuronal migration, often correlated with genetic syndromes or exogenous etiological factors. Neuronal migration begins between the 7th and 8t...

The investigations reported here evolved from studies on a coupled aerobic reaction between cysteinesulfinic acid (CSA)’ and a substance obtained from yeast extracts, which was catalyzed by soluble preparations from Proteus vulgaris and a variety of animal tissue, and yielded equal amounts of aspartate, pyruvate, and sulfate as products (2, 3). The reaction required DPN and an autoxidizable dye...

With the increasing interest in the diagnosis of malignant cells in various exudates and body fluids, a method demonstrating certain nucleolar changes in considerable detail may be of value. I t is t he purpose of this paper to present such a method and to discuss briefly the nucleolar changes in benign and malignant tissues and also to point out the potential applicability of this method as an...

Hearing loss, vestibular disorders and damaged eyesight can be the result of axonal degeneration (Int Jour Ped Otrlaryn, 61:1-15; Inst Opthalm, 7:109-125). Improper functioning of the myelin sheath may be responsible for this degeneration, due to its role in conducting chemical and electrical neural signaling. Investigation of myelin degeneration requires understanding of normal myelinogenesis ...