Consulta: subjectFacets:"Gamma rays"
Registros recuperados: 5
Data/hora: 13/06/2024 05:22:41

DETOXIFICATION OF SNAKE VENOM USING IONIZING RADIATION
Provedor de dados: 79
Autores: ROGERO,J.R.; NASCIMENTO,N.
It is generally recognized that energy absorbed from ionizing radiation (gamma rays) can inactivate biological material in two ways. A direct effect occurs when the primary event, i. e., ionization, is produced in the molecule itself. This is the case when a compound is irradiated in dry state. When a compound is irradiated in a solution, the indirect effect joins the direct(9). Since water is the most abundant constituent of biological material, it is important to consider the species produced by excitation and ionization of water itself, and the reaction of these species with the target molecules of biological importance. This indirect effect results from the reactions among the studied molecules and the products of radiation interaction with water or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Detoxification of snake venom; Ionizing radiation; Gamma rays.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301995000100002

Study of irradiated bothropstoxin-1 with60Co gamma rays: immune system behavior
Provedor de dados: 80
Autores: Caproni,P; Baptista,JA; Almeida,TL de; Passos,LAC; Nascimento,N.
Ionizing radiation has been successfully employed to modify the immunological properties of biomolecules. Very promising results were obtained when crude animal venoms, as well as isolated toxins, were treated with 60Co gamma rays, yielding toxoids with good immunogenicity. The achievement of modified antigens with lower toxicity and preserved or improved immunogenicity can be very useful. Ionizing radiation has already been proven to be a powerful tool to attenuate snake venom toxicity without affecting, and even increasing, their immunogenic properties. However, little is known about the modifications that irradiated molecules undergo and even less about the immunological response that such antigens elicit. In the present work, we investigated the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Immunology; Ionizing radiation; Gamma rays; Bothropstoxin-1.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992009000200005

Fusion of protoplasts with irradiated microprotoplasts as a tool for radiation hybrid panel in citrus
Provedor de dados: 86
Autores: Bona,Claudine Maria de; Stelly,David; Miller Jr.,J. Creighton; Louzada,Eliezer Silva.
The objective of this work was to combine asymmetric somatic hybridization (donor-recipient fusion or gamma fusion) to microprotoplast-mediated chromosome transfer, as a tool to be used for chromosome mapping in Citrus. Swinglea glutinosa microprotoplasts were irradiated either with 50, 70, 100 or 200 gamma rays and fused to cv. Ruby Red grapefruit or Murcott tangor protoplasts. Cell colonies were successfully formed and AFLP analyses confirmed presence of S. glutinosa in both 'Murcott' tangor and 'Ruby Red' grapefruit genomes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus; Swinglea glutinosa; Asymmetric somatic hybridization; Gamma rays; Hybrid cell lines; Radiation hybrid mapping.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009001200008

Alterations in Biomarkers Associated with Sterility in Pectinophora gossypiella (Saunders) Induced by Gamma Irradiation
Provedor de dados: 52
Autores: Ali,Hanaa Mahmoud; Moustafa,Hemat Zakaria; Sayed,Rehab Mahmoud.
ABSTRACT Nowadays, radiation technology is widely used to produce changes in Biosystems. The goal of this work is to determine the variation induced male Pectinophora gossypiella in gamma-irradiated as pupae using 50Gy and 150Gy. Comparing elements composition and DNA (using RAPD-PCR) between substerile 50Gy and the sterile dose 150Gy in P. gossypiella showed variation between them. Potassium (K) was the most abundant elements in unirradiated and irradiated males followed by magnesium (Mg). The percentage of heavy metals as copper, zinc, and cadmium concurrent with K was directly proportional to the radiation dose. While the percentage of Mg, Phosphorous and calcium decreased as the radiation dose increased. The results also revealed that some extra bands...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pectinophora gossypiella; Gamma rays; RAPD-PCR; Elements; DNA.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100401

Alterations in Biomarkers Associated with Sterility in Pectinophora gossypiella (Saunders) Induced by Gamma Irradiation
Provedor de dados: 52
Autores: Ali,Hanaa Mahmoud; Moustafa,Hemat Zakaria; Sayed,Rehab Mahmoud.
ABSTRACT Nowadays, radiation technology is widely used to produce changes in Biosystems. The goal of this work is to determine the variation induced male Pectinophora gossypiella in gamma-irradiated as pupae using 50Gy and 150Gy. Comparing elements composition and DNA (using RAPD-PCR) between substerile 50Gy and the sterile dose 150Gy in P. gossypiella showed variation between them. Potassium (K) was the most abundant elements in unirradiated and irradiated males followed by magnesium (Mg). The percentage of heavy metals as copper, zinc, and cadmium concurrent with K was directly proportional to the radiation dose. While the percentage of Mg, Phosphorous and calcium decreased as the radiation dose increased. The results also revealed that some extra bands...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pectinophora gossypiella; Gamma rays; RAPD-PCR; Elements; DNA.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100436