Reductions in Calcium Uptake Induced in Rat Brain Synaptosomes by Ionizing Radiation
Gamma irradiation (60 Co) reduced KCl-stimulated voltage-dependent 45 Ca2+ uptake in whole-brain, cortical, and striatal synaptosomes. The time course (3, 10, 30, and 60 s) of calcium uptake by irradiated (3 Gy) and nonirradiated synaptosomes, as well as the effect of KCl (15-65 mM), was measured in...
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| Veröffentlicht in: | Radiation research 1991-02, Vol.125 (2), p.158-162 |
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| creator | Kandasamy, Sathasiva B. Howerton, Thomas C. Hunt, Walter A. |
| description | Gamma irradiation (60 Co) reduced KCl-stimulated voltage-dependent 45 Ca2+ uptake in whole-brain, cortical, and striatal synaptosomes. The time course (3, 10, 30, and 60 s) of calcium uptake by irradiated (3 Gy) and nonirradiated synaptosomes, as well as the effect of KCl (15-65 mM), was measured in whole-brain synaptosomes. The fastest and highest rate of depolarization-dependent calcium uptake occurred at 3 s with 65 mM KCl. Irradiation reduced calcium uptake at all incubation times and KCl concentrations. Bay K 8644 enhancement of KCl-stimulated calcium influx was also reduced by radiation exposure. Nimodipine binding to dihydropyridine (DHP) L-type calcium channel receptors was not altered following radiation exposure. These results demonstrate an inhibitory effect of ionizing radiation on the voltage-sensitive calcium channels in rat brain synaptosomes that are not mediated by DHP receptors. |
| doi_str_mv | 10.2307/3577883 |
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The time course (3, 10, 30, and 60 s) of calcium uptake by irradiated (3 Gy) and nonirradiated synaptosomes, as well as the effect of KCl (15-65 mM), was measured in whole-brain synaptosomes. The fastest and highest rate of depolarization-dependent calcium uptake occurred at 3 s with 65 mM KCl. Irradiation reduced calcium uptake at all incubation times and KCl concentrations. Bay K 8644 enhancement of KCl-stimulated calcium influx was also reduced by radiation exposure. Nimodipine binding to dihydropyridine (DHP) L-type calcium channel receptors was not altered following radiation exposure. These results demonstrate an inhibitory effect of ionizing radiation on the voltage-sensitive calcium channels in rat brain synaptosomes that are not mediated by DHP receptors.</description><identifier>ISSN: 0033-7587</identifier><identifier>EISSN: 1938-5404</identifier><identifier>DOI: 10.2307/3577883</identifier><identifier>PMID: 1996373</identifier><identifier>CODEN: RAREAE</identifier><language>eng</language><publisher>Oak Brook, Il: Academic Press, Inc</publisher><subject>560152 - Radiation Effects on Animals- Animals ; ALKALINE EARTH ISOTOPES ; ALKALINE EARTH METAL COMPOUNDS ; ANIMAL CELLS ; ANIMALS ; BETA DECAY RADIOISOTOPES ; BETA-MINUS DECAY RADIOISOTOPES ; Biological and medical sciences ; BIOLOGICAL EFFECTS ; BIOLOGICAL RADIATION EFFECTS ; BODY ; BRAIN ; Brain - cytology ; Calcium ; Calcium - pharmacokinetics ; CALCIUM 45 ; Calcium channels ; CALCIUM COMPOUNDS ; CALCIUM ISOTOPES ; CENTRAL NERVOUS SYSTEM ; Cerebral Cortex - cytology ; COBALT 60 ; COBALT ISOTOPES ; Cobalt Radioisotopes ; Corpus Striatum - cytology ; DAYS LIVING RADIOISOTOPES ; Dihydropyridines ; Dosimetry ; ELECTROMAGNETIC RADIATION ; EVEN-ODD NUCLEI ; GAMMA RADIATION ; In Vitro Techniques ; INTERMEDIATE MASS NUCLEI ; INTERNAL CONVERSION RADIOISOTOPES ; Ionizing radiation ; IONIZING RADIATIONS ; Irradiation ; ISOMERIC TRANSITION ISOTOPES ; ISOTOPES ; Male ; MAMMALS ; Medical sciences ; MINUTES LIVING RADIOISOTOPES ; NERVE CELLS ; NERVOUS SYSTEM ; NUCLEI ; ODD-ODD NUCLEI ; ORGANS ; Potassium Chloride - pharmacology ; Radiation dosage ; RADIATION EFFECTS ; RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT ; RADIATIONS ; RADIOISOTOPES ; Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects) ; RATS ; Rats, Inbred Strains ; Receptors ; RODENTS ; SOMATIC CELLS ; Space life sciences ; Stimulation, Chemical ; Synaptosomes ; Synaptosomes - drug effects ; Synaptosomes - metabolism ; Synaptosomes - radiation effects ; Time Factors ; UPTAKE ; VERTEBRATES ; YEARS LIVING RADIOISOT</subject><ispartof>Radiation research, 1991-02, Vol.125 (2), p.158-162</ispartof><rights>Copyright 1991 Academic Press, Inc.</rights><rights>1992 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c361t-fc8aa9b619504527e12b5295332be72774a446191ba4c68cf660e70efe7e83113</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/3577883$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/3577883$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>230,314,780,784,803,885,27924,27925,58017,58250</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=5396108$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/1996373$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/6140389$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Kandasamy, Sathasiva B.</creatorcontrib><creatorcontrib>Howerton, Thomas C.</creatorcontrib><creatorcontrib>Hunt, Walter A.</creatorcontrib><title>Reductions in Calcium Uptake Induced in Rat Brain Synaptosomes by Ionizing Radiation</title><title>Radiation research</title><addtitle>Radiat Res</addtitle><description>Gamma irradiation (60 Co) reduced KCl-stimulated voltage-dependent 45 Ca2+ uptake in whole-brain, cortical, and striatal synaptosomes. The time course (3, 10, 30, and 60 s) of calcium uptake by irradiated (3 Gy) and nonirradiated synaptosomes, as well as the effect of KCl (15-65 mM), was measured in whole-brain synaptosomes. The fastest and highest rate of depolarization-dependent calcium uptake occurred at 3 s with 65 mM KCl. Irradiation reduced calcium uptake at all incubation times and KCl concentrations. Bay K 8644 enhancement of KCl-stimulated calcium influx was also reduced by radiation exposure. Nimodipine binding to dihydropyridine (DHP) L-type calcium channel receptors was not altered following radiation exposure. These results demonstrate an inhibitory effect of ionizing radiation on the voltage-sensitive calcium channels in rat brain synaptosomes that are not mediated by DHP receptors.</description><subject>560152 - Radiation Effects on Animals- Animals</subject><subject>ALKALINE EARTH ISOTOPES</subject><subject>ALKALINE EARTH METAL COMPOUNDS</subject><subject>ANIMAL CELLS</subject><subject>ANIMALS</subject><subject>BETA DECAY RADIOISOTOPES</subject><subject>BETA-MINUS DECAY RADIOISOTOPES</subject><subject>Biological and medical sciences</subject><subject>BIOLOGICAL EFFECTS</subject><subject>BIOLOGICAL RADIATION EFFECTS</subject><subject>BODY</subject><subject>BRAIN</subject><subject>Brain - cytology</subject><subject>Calcium</subject><subject>Calcium - pharmacokinetics</subject><subject>CALCIUM 45</subject><subject>Calcium channels</subject><subject>CALCIUM COMPOUNDS</subject><subject>CALCIUM ISOTOPES</subject><subject>CENTRAL NERVOUS SYSTEM</subject><subject>Cerebral Cortex - cytology</subject><subject>COBALT 60</subject><subject>COBALT ISOTOPES</subject><subject>Cobalt Radioisotopes</subject><subject>Corpus Striatum - cytology</subject><subject>DAYS LIVING RADIOISOTOPES</subject><subject>Dihydropyridines</subject><subject>Dosimetry</subject><subject>ELECTROMAGNETIC RADIATION</subject><subject>EVEN-ODD NUCLEI</subject><subject>GAMMA RADIATION</subject><subject>In Vitro Techniques</subject><subject>INTERMEDIATE MASS NUCLEI</subject><subject>INTERNAL CONVERSION RADIOISOTOPES</subject><subject>Ionizing radiation</subject><subject>IONIZING RADIATIONS</subject><subject>Irradiation</subject><subject>ISOMERIC TRANSITION ISOTOPES</subject><subject>ISOTOPES</subject><subject>Male</subject><subject>MAMMALS</subject><subject>Medical sciences</subject><subject>MINUTES LIVING RADIOISOTOPES</subject><subject>NERVE CELLS</subject><subject>NERVOUS SYSTEM</subject><subject>NUCLEI</subject><subject>ODD-ODD NUCLEI</subject><subject>ORGANS</subject><subject>Potassium Chloride - pharmacology</subject><subject>Radiation dosage</subject><subject>RADIATION EFFECTS</subject><subject>RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT</subject><subject>RADIATIONS</subject><subject>RADIOISOTOPES</subject><subject>Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)</subject><subject>RATS</subject><subject>Rats, Inbred Strains</subject><subject>Receptors</subject><subject>RODENTS</subject><subject>SOMATIC CELLS</subject><subject>Space life sciences</subject><subject>Stimulation, Chemical</subject><subject>Synaptosomes</subject><subject>Synaptosomes - drug effects</subject><subject>Synaptosomes - metabolism</subject><subject>Synaptosomes - radiation effects</subject><subject>Time Factors</subject><subject>UPTAKE</subject><subject>VERTEBRATES</subject><subject>YEARS LIVING RADIOISOT</subject><issn>0033-7587</issn><issn>1938-5404</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kE1LxDAQhoMouq7iLxCKiJ6qSdN8HXXxY2FBWPVc0nSq0TZZm_Sw_npbdtGTp5nheXgHXoROCL7KKBbXlAkhJd1BE6KoTFmO8100wZjSVDApDtBhCB94uAlX-2ifKMWpoBP0soSqN9F6FxLrkplujO3b5HUV9SckczdAqEay1DG57fSwPa-dXkUffAshKdfJ3Dv7bd3boFRWj1FHaK_WTYDj7Zyi1_u7l9ljunh6mM9uFqmhnMS0NlJrVXKiGM5ZJoBkJcsUozQrQWRC5DrPB0pKnRsuTc05BoGhBgGSEkKn6GyT60O0RTA2gnk33jkwseAkx1SqQbrYSKvOf_UQYtHaYKBptAPfh0KOvykbxcuNaDofQgd1sepsq7t1QXAxllxsSx7M021kX7ZQ_XmbVgd-vuU6GN3UnXbGhl-NUcUJln_aR4i--_fbD82rjGI</recordid><startdate>19910201</startdate><enddate>19910201</enddate><creator>Kandasamy, Sathasiva B.</creator><creator>Howerton, Thomas C.</creator><creator>Hunt, Walter A.</creator><general>Academic Press, Inc</general><general>Radiation Research Society</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>19910201</creationdate><title>Reductions in Calcium Uptake Induced in Rat Brain Synaptosomes by Ionizing Radiation</title><author>Kandasamy, Sathasiva B. ; Howerton, Thomas C. ; Hunt, Walter A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c361t-fc8aa9b619504527e12b5295332be72774a446191ba4c68cf660e70efe7e83113</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>560152 - Radiation Effects on Animals- Animals</topic><topic>ALKALINE EARTH ISOTOPES</topic><topic>ALKALINE EARTH METAL COMPOUNDS</topic><topic>ANIMAL CELLS</topic><topic>ANIMALS</topic><topic>BETA DECAY RADIOISOTOPES</topic><topic>BETA-MINUS DECAY RADIOISOTOPES</topic><topic>Biological and medical sciences</topic><topic>BIOLOGICAL EFFECTS</topic><topic>BIOLOGICAL RADIATION EFFECTS</topic><topic>BODY</topic><topic>BRAIN</topic><topic>Brain - cytology</topic><topic>Calcium</topic><topic>Calcium - pharmacokinetics</topic><topic>CALCIUM 45</topic><topic>Calcium channels</topic><topic>CALCIUM COMPOUNDS</topic><topic>CALCIUM ISOTOPES</topic><topic>CENTRAL NERVOUS SYSTEM</topic><topic>Cerebral Cortex - cytology</topic><topic>COBALT 60</topic><topic>COBALT ISOTOPES</topic><topic>Cobalt Radioisotopes</topic><topic>Corpus Striatum - cytology</topic><topic>DAYS LIVING RADIOISOTOPES</topic><topic>Dihydropyridines</topic><topic>Dosimetry</topic><topic>ELECTROMAGNETIC RADIATION</topic><topic>EVEN-ODD NUCLEI</topic><topic>GAMMA RADIATION</topic><topic>In Vitro Techniques</topic><topic>INTERMEDIATE MASS NUCLEI</topic><topic>INTERNAL CONVERSION RADIOISOTOPES</topic><topic>Ionizing radiation</topic><topic>IONIZING RADIATIONS</topic><topic>Irradiation</topic><topic>ISOMERIC TRANSITION ISOTOPES</topic><topic>ISOTOPES</topic><topic>Male</topic><topic>MAMMALS</topic><topic>Medical sciences</topic><topic>MINUTES LIVING RADIOISOTOPES</topic><topic>NERVE CELLS</topic><topic>NERVOUS SYSTEM</topic><topic>NUCLEI</topic><topic>ODD-ODD NUCLEI</topic><topic>ORGANS</topic><topic>Potassium Chloride - pharmacology</topic><topic>Radiation dosage</topic><topic>RADIATION EFFECTS</topic><topic>RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT</topic><topic>RADIATIONS</topic><topic>RADIOISOTOPES</topic><topic>Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)</topic><topic>RATS</topic><topic>Rats, Inbred Strains</topic><topic>Receptors</topic><topic>RODENTS</topic><topic>SOMATIC CELLS</topic><topic>Space life sciences</topic><topic>Stimulation, Chemical</topic><topic>Synaptosomes</topic><topic>Synaptosomes - drug effects</topic><topic>Synaptosomes - metabolism</topic><topic>Synaptosomes - radiation effects</topic><topic>Time Factors</topic><topic>UPTAKE</topic><topic>VERTEBRATES</topic><topic>YEARS LIVING RADIOISOT</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kandasamy, Sathasiva B.</creatorcontrib><creatorcontrib>Howerton, Thomas C.</creatorcontrib><creatorcontrib>Hunt, Walter A.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Radiation research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kandasamy, Sathasiva B.</au><au>Howerton, Thomas C.</au><au>Hunt, Walter A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reductions in Calcium Uptake Induced in Rat Brain Synaptosomes by Ionizing Radiation</atitle><jtitle>Radiation research</jtitle><addtitle>Radiat Res</addtitle><date>1991-02-01</date><risdate>1991</risdate><volume>125</volume><issue>2</issue><spage>158</spage><epage>162</epage><pages>158-162</pages><issn>0033-7587</issn><eissn>1938-5404</eissn><coden>RAREAE</coden><abstract>Gamma irradiation (60 Co) reduced KCl-stimulated voltage-dependent 45 Ca2+ uptake in whole-brain, cortical, and striatal synaptosomes. The time course (3, 10, 30, and 60 s) of calcium uptake by irradiated (3 Gy) and nonirradiated synaptosomes, as well as the effect of KCl (15-65 mM), was measured in whole-brain synaptosomes. The fastest and highest rate of depolarization-dependent calcium uptake occurred at 3 s with 65 mM KCl. Irradiation reduced calcium uptake at all incubation times and KCl concentrations. Bay K 8644 enhancement of KCl-stimulated calcium influx was also reduced by radiation exposure. Nimodipine binding to dihydropyridine (DHP) L-type calcium channel receptors was not altered following radiation exposure. These results demonstrate an inhibitory effect of ionizing radiation on the voltage-sensitive calcium channels in rat brain synaptosomes that are not mediated by DHP receptors.</abstract><cop>Oak Brook, Il</cop><pub>Academic Press, Inc</pub><pmid>1996373</pmid><doi>10.2307/3577883</doi><tpages>5</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Radiation research, 1991-02, Vol.125 (2), p.158-162 |
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| language | eng |
| recordid | cdi_osti_scitechconnect_6140389 |
| source | MEDLINE; Jstor Complete Legacy |
| subjects | 560152 - Radiation Effects on Animals- Animals ALKALINE EARTH ISOTOPES ALKALINE EARTH METAL COMPOUNDS ANIMAL CELLS ANIMALS BETA DECAY RADIOISOTOPES BETA-MINUS DECAY RADIOISOTOPES Biological and medical sciences BIOLOGICAL EFFECTS BIOLOGICAL RADIATION EFFECTS BODY BRAIN Brain - cytology Calcium Calcium - pharmacokinetics CALCIUM 45 Calcium channels CALCIUM COMPOUNDS CALCIUM ISOTOPES CENTRAL NERVOUS SYSTEM Cerebral Cortex - cytology COBALT 60 COBALT ISOTOPES Cobalt Radioisotopes Corpus Striatum - cytology DAYS LIVING RADIOISOTOPES Dihydropyridines Dosimetry ELECTROMAGNETIC RADIATION EVEN-ODD NUCLEI GAMMA RADIATION In Vitro Techniques INTERMEDIATE MASS NUCLEI INTERNAL CONVERSION RADIOISOTOPES Ionizing radiation IONIZING RADIATIONS Irradiation ISOMERIC TRANSITION ISOTOPES ISOTOPES Male MAMMALS Medical sciences MINUTES LIVING RADIOISOTOPES NERVE CELLS NERVOUS SYSTEM NUCLEI ODD-ODD NUCLEI ORGANS Potassium Chloride - pharmacology Radiation dosage RADIATION EFFECTS RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT RADIATIONS RADIOISOTOPES Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects) RATS Rats, Inbred Strains Receptors RODENTS SOMATIC CELLS Space life sciences Stimulation, Chemical Synaptosomes Synaptosomes - drug effects Synaptosomes - metabolism Synaptosomes - radiation effects Time Factors UPTAKE VERTEBRATES YEARS LIVING RADIOISOT |
| title | Reductions in Calcium Uptake Induced in Rat Brain Synaptosomes by Ionizing Radiation |
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