Journal Article10.1007/BF02172188
A new puffing pattern induced by temperature shock and DNP in drosophila
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TL;DR: In this article, shocks di temperatura possono indurre una variazione di "puffing pattern" in ghiandole salivari di Drosophila, which is perfettamente reversibili and rappresentano zone di intensa sintesi di RNA.
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Abstract: Si e notato che shocks di temperatura possono indurre una variazione di «puffing pattern» in ghiandole salivari di Drosophila. Tali «puffing» sono perfettamente reversibili e rappresentano zone di intensa sintesi di RNA. Si e notato che DNP e Na salicilato portano a simili variazioni di «puffing pattern».
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Citations
Heat shock protein 70: correlation of expression with degree of graft-versus-host response and clinical graft-versus-host disease.
TL;DR: This investigation has demonstrated for the first time the expression of hsp70 in a human model of GVHD, suggesting involvement in the pathogenesis of the disease and providing the basis for further investigation.
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Polytene chromosome puffing and in situ hybridization measure different aspects of RNA metabolism.
J. Jose Bonner,Mary Lou Pardue +1 more
TL;DR: Direct autoradiography of Drosophila melanogaster polytene chromosomes which have incorporated 3H-uridine suggests that the chromosomal puffs are the most active sites of incorporation, and that the phenomenon of puffing may not be a simple reflection of transcription rate, since several puffs hybridize RNAs with quite different metabolic characteristics.
40
The induction of changes in chromosomal activity in different polytene types of cell in Drosophila hydei.
TL;DR: Not only do all puffs in the salivary gland and in the stomach attain the same level of activity following temperature shock, but the stomach cells show these changes at the same time or even later than the salIVary gland cells.
40
Thermal response of Heterorhabditis bacteriophora transformed with the Caenorhabditis elegans hsp70 encoding gene.
TL;DR: The observations establish that overexpression of hsp70 A gene resulted an enhanced thermotolerance in the transgenic nematodes, which displayed normal growth and development.
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Sodium arsenite induces heat shock protein 70 expression and protects against secretagogue-induced trypsinogen and NF-κB activation
TL;DR: It is concluded that, like thermal stress, chemical stressors such as sodium arsenite also induce HSP70 expression in the pancreas and protect against acute pancreatitis, thus, non‐thermal pharmacologically induced stress can help prevent or treat pancreatitis.
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References
Induktion von puff-veränderungen in den speicheldrüsenchromosomen von Chironomus t̆entans durch Ecdyson
U. Clever,P. Karlson +1 more
TL;DR: After the injection of “ecdysone”—the hormone of the prothoracic glands—into the last instar larvae of Chironomus tentans, a new puff in the first chromosome appears, while another one disappears, in normal development.
419
Behavior of polytene chromosomes of Rhynchosciara angelae at different stages of larval development.
M. E. Breuer,C. Pavan +1 more
TL;DR: Polytene chromosomes in cells of salivary gland, Malpighian tubules and intestine of Rhynchosciara angelae are very favorable for study and experimental evidence suggests that a gene is located within a band, which may be morphological evidence of gene activities.
287
Chromosomal synthesis of ribonucleic acid as shown by incorporation of uridine labelled with tritium.
TL;DR: None of these investigations provide information as to the precise localization of structures within the nucleus which synthesize this acid, except the nucleolus, nor has it been shown that it is the nucleolar organizer which synthesizes the nucleolars ribonucleic acid.
171
Cell sites of RNA and protein syntheses in the salivary gland of Smittia (Chironomidae).
TL;DR: The uptake of tritiated uridine, leucine and thymidine by salivary cell components of Smiftia appears to be a favourable one for cytochemical work on nuclear RNA's.
83
The induction of new puffing patterns by transplantation of salivary gland nuclei into egg cytoplasma of Drosophila.
TL;DR: Als Kontrolle wird die zweite Speicheldrüse der zur Gewinnung von Kernen benutzten Larven für 3 Std als Ganzes in Ringer-Lösung bzw.
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