Neurofilament proteins and human nervous system tumors.

1987 ◽  
Vol 35 (9) ◽  
pp. 999-1003 ◽  
Author(s):  
J Q Trojanowski
Keyword(s):  
Nervous System ◽  
Molecular Probes ◽  
Cytoskeletal Proteins ◽  
Diagnostic Assessment ◽  
Critical Examination ◽  
Specific Gene ◽  
Specific Class ◽  
Gene Products ◽  
Carotid Body Tumors ◽  
Human Nervous System

Neoplasms that arise in the peripheral (e.g., carotid body tumors, neuroblastomas, pheochromocytomas) or central (gangliocytomas, medulloblastomas) nervous system express a number of neuron-specific gene products. Presumably, these tumors are derived from precursor cells that are or have the potential to develop into neurons or neuron-like cells. This report provides a critical examination of the hypothesis that cytoskeletal proteins of normal neurons, in particular the neuron-specific class of intermediate filaments (neurofilaments), are present but are abnormal in neoplasms derived from neurons or neuron-like cells. The implications of these findings for understanding tumor promotion and progression, and for development of molecular probes for the diagnostic assessment of these neoplasms, are discussed.

scholarly journals Aconitine Neurotoxicity According to Administration Methods

2021 ◽  
Vol 10 (10) ◽  
pp. 2149
Author(s):  
Ji Yeon Chung ◽  
Seung Jae Lee ◽  
Hyuck Jin Lee ◽  
Jeong Bin Bong ◽  
Chan-Hyuk Lee ◽  
...  
Keyword(s):  
Nervous System ◽  
Pain Control ◽  
Associated Factors ◽  
Clinical Characteristics ◽  
Processing Method ◽  
Neurological Symptoms ◽  
Administration Method ◽  
Accompanying Symptoms ◽  
Administration Methods ◽  
Human Nervous System

We evaluated the toxic effects of aconitine on the human nervous system and its associated factors, and the general clinical characteristics of patients who visited the emergency room due to aconitine intoxication between 2008 and 2017. We also analyzed the differences related to aconitine processing and administration methods (oral pill, boiled in water, and alcohol-soaked), and the clinical characteristics of consciousness deterioration and neurological symptoms. Of the 41 patients who visited the hospital due to aconitine intoxication, 23 (56.1%) were female, and most were older. Aconitine was mainly used for pain control (28 patients, 68.3%) and taken as oral pills (19 patients, 46%). The patients showed a single symptom or a combination of symptoms; neurological symptoms were the most common (21 patients). All patients who took aconitine after processing with alcohol showed neurological symptoms and a higher prevalence of consciousness deterioration. Neurological symptoms occurred most frequently in patients with aconitine intoxication. Although aconitine intoxication presents with various symptoms, its prognosis may vary with the processing method and prevalence of consciousness deterioration during the early stages. Therefore, the administration method and accompanying symptoms should be comprehensively investigated in patients who have taken aconitine to facilitate prompt and effective treatment and better prognoses.

An X-ray diffraction comparison of myelins from the human nervous system

1978 ◽  
Vol 177 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Ronald J. Chandross ◽  
Richard S. Bear ◽  
Royce L. Montgomery
Keyword(s):  
Nervous System ◽  
X Ray Diffraction ◽  
X Ray ◽  
Human Nervous System

scholarly journals Trial-by-Trial Adaptation of Movements during Mental Practice under Force Field

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Muhammad Nabeel Anwar ◽  
Salman Hameed Khan
Keyword(s):  
Nervous System ◽  
Force Field ◽  
Motor Imagery ◽  
Internal Model ◽  
Human Movement ◽  
Mental Practice ◽  
Higher Learning ◽  
Reaching Movements ◽  
Adaptive Compensation ◽  
Human Nervous System

Human nervous system tries to minimize the effect of any external perturbing force by bringing modifications in the internal model. These modifications affect the subsequent motor commands generated by the nervous system. Adaptive compensation along with the appropriate modifications of internal model helps in reducing human movement errors. In the current study, we studied how motor imagery influences trial-to-trial learning in a robot-based adaptation task. Two groups of subjects performed reaching movements with or without motor imagery in a velocity-dependent force field. The results show that reaching movements performed with motor imagery have relatively a more focused generalization pattern and a higher learning rate in training direction.

Monoclonal antibodies react with neuronal subpopulations in the human nervous system

1988 ◽  
Vol 267 (3) ◽  
pp. 398-408 ◽  
Author(s):  
David R. Hinton ◽  
Victor W. Henderson ◽  
Janet C. Blanks ◽  
Maria Rudnicka ◽  
Carol A. Miller
Keyword(s):  
Nervous System ◽  
Monoclonal Antibodies ◽  
Human Nervous System

LIPOPROTEIN PIGMENTS—THEIR RELATIONSHIP TO AGEING IN THE HUMAN NERVOUS SYSTEM

Brain ◽  
1974 ◽  
Vol 97 (1) ◽  
pp. 489-498 ◽  
Author(s):  
D. M. A. MANN ◽  
P. O. YATES
Keyword(s):  
Nervous System ◽  
Human Nervous System

scholarly journals Transcription of Candidate Virulence Genes ofHaemophilus ducreyi during Infection of Human Volunteers

2001 ◽  
Vol 69 (3) ◽  
pp. 1483-1487 ◽  
Author(s):  
Robert E. Throm ◽  
Stanley M. Spinola
Keyword(s):  
Experimental Infection ◽  
Virulence Genes ◽  
Human Model ◽  
Specific Gene ◽  
Gene Products ◽  
Virulence Determinants ◽  
Reverse Transcription Pcr ◽  
Human Volunteers

ABSTRACT Haemophilus ducreyi expresses several putative virulence factors in vitro. Isogenic mutant-to-parent comparisons have been performed in a human model of experimental infection to examine whether specific gene products are involved in pathogenesis. Several mutants (momp, ftpA, losB, lst, cdtC, and hhdB) were as virulent as the parent in the human model, suggesting that their gene products did not play a major role in pustule formation. However, we could not exclude the possibility that the gene of interest was not expressed during the initial stages of infection. Biopsies of pustules obtained from volunteers infected with H. ducreyiwere subjected to reverse transcription-PCR. Transcripts corresponding to momp, ftpA, losB, lst, cdtB, and hhdA were expressed in vivo. In addition, transcripts for other putative virulence determinants such as ompA2, tdhA, lspA1, andlspA2 were detected in the biopsies. These results indicate that although several candidate virulence determinants are expressed during experimental infection, they do not have a major role in the initial stages of pathogenesis.

Dimerization through the helix-loop-helix motif enhances phosphorylation of the transcription activation domains of myogenin

1994 ◽  
Vol 14 (9) ◽  
pp. 6232-6243
Author(s):  
J Zhou ◽  
E N Olson
Keyword(s):  
Transcriptional Activity ◽  
Transcription Activation ◽  
Bhlh Protein ◽  
Specific Gene ◽  
Phosphorylation Sites ◽  
Gene Products ◽  
Activation Domains ◽  
Helix Loop Helix ◽  
Carboxyl Terminal ◽  
Bhlh Proteins

The muscle-specific basic helix-loop-helix (bHLH) protein myogenin activates muscle transcription by binding to target sequences in muscle-specific promoters and enhancers as a heterodimer with ubiquitous bHLH proteins, such as the E2A gene products E12 and E47. We show that dimerization with E2A products potentiates phosphorylation of myogenin at sites within its amino- and carboxyl-terminal transcription activation domains. Phosphorylation of myogenin at these sites was mediated by the bHLH region of E2A products and was dependent on dimerization but not on DNA binding. Mutations of the dimerization-dependent phosphorylation sites resulted in enhanced transcriptional activity of myogenin, suggesting that their phosphorylation diminishes myogenin's transcriptional activity. The ability of E2A products to potentiate myogenin phosphorylation suggests that dimerization induces a conformational change in myogenin that unmasks otherwise cryptic phosphorylation sites or that E2A proteins recruit a kinase for which myogenin is a substrate. That phosphorylation of these dimerization-dependent sites diminished myogenin's transcriptional activity suggests that these sites are targets for a kinase that interferes with muscle-specific gene expression.

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