イオウ放射性同位体

WordNet

a radioactive isotope of an element; produced either naturally or artificially
an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions) (同)S, sulphur, atomic number 16

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放射性同位元素

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1. 脾腫およびその他の脾疾患を有する成人患者に対するアプローチ approach to the adult patient with splenomegaly and other splenic disorders
2. 頚部顔面の放線菌症 cervicofacial actinomycosis
3. 肝腺腫 hepatic adenoma
4. 尋常性ざ瘡のための光治療、補助化学療法、およびその他の治療法 light based adjunctive and other therapies for acne vulgaris
5. 腹部放線菌症 abdominal actinomycosis

English Journal

Translocation of (125)I, (75)Se and (36)Cl to edible parts of radish, potato and green bean following wet foliar contamination under field conditions.

Henner P, Hurtevent P, Thiry Y, Levchuk S, Yoschenko V, Kashparov V.Author information French Institute for Radiological Protection and Nuclear Safety (IRSN), PRP-ENV/SERIS/L2BT, CE Cadarache bt 186, BP 3, 13115 Saint-Paul-lez-Durance, France. pascale.henner@irsn.frAbstractSpecific translocation factor values (ftr) for (129)I, (79)Se and (36)Cl following foliar transfer are still missing from the IAEA reference databases. The translocation of the short-lived isotopes, (125)I, (75)Se, and (36)Cl, to radish, potato and green bean edible parts was measured under field conditions following acute and chronic wet foliar contamination at various plant growth stages in the absence of leaching caused by rain. The translocation factors obtained for (125)I ranged from 0.8 to 2.6% for radish, from 0.1 to 2.3% for potato and from 0.1 to 2.6% for bean. The translocation factors obtained for (75)Se ranged from 6.3 to 21% for radish, from 1.6 to 32.6% for potato and from 7.7 to 22.8% for bean (values similar to Cs or even higher). The translocation factors obtained for (36)Cl were close to those for (75)Se and ranged from 4.3 to 28.8% for radish, from 0.5 to 31.5% for potato and from 4.3 to 16.3% for bean. Iodide showed the lowest apparent mobility because of its preferential fixation in or on the leaves and a significant amount was probably volatilized. Selenite internal transfer was significant and possibly followed the sulfur metabolic pathway. Chloride was very mobile and quickly diffused throughout the plant. The translocation factors varied with the growth stage and depended on the development state of the edible tissue and its associated sink strength for nutrients and assimilates. For radish, translocation was high during the early vegetative stages. For potato, wheat and bean, a major peak in translocation was seen during the flowering growth stage and the concomitant growth of potato tubers. An additive effect of successive contamination events on translocated elements was shown in radish but not in bean and potato. The highest translocation value obtained for an acute contamination event was shown to be an adequate, conservative indicator of chronic contamination in absence of specific values. Due to the absence of rain leaching during the experiment this study probably provides translocation values among the highest that could be recorded.
Journal of environmental radioactivity.J Environ Radioact.2013 Oct;124:171-84. doi: 10.1016/j.jenvrad.2013.05.012. Epub 2013 Jun 26.
Specific translocation factor values (ftr) for (129)I, (79)Se and (36)Cl following foliar transfer are still missing from the IAEA reference databases. The translocation of the short-lived isotopes, (125)I, (75)Se, and (36)Cl, to radish, potato and green bean edible parts was measured under field co
PMID 23811127

Technical effects of adding 1 % lidocaine to technetium sulfur colloid for sentinel lymphatic mapping in early breast cancer: analysis of data from a double-blind randomized controlled trial.

Arciero CA, Henry LR, Howard RS, Peoples GE, Bilchik AJ, Avital I, Buckenmaier Iii CC, Stojadinovic A.Author information Department of Surgery, Dwight D. Eisenhower Army Medical Center, Fort Gordon, GA, USA.AbstractBACKGROUND: A practice standard in sentinel lymph node (SLN) mapping in breast cancer is intradermal injection of technetium-99m sulfur colloid (Tc-99m), resulting in significant patient discomfort and pain. A previous randomized controlled trial showed that adding lidocaine to Tc-99m significantly reduced radioisotope injection-related pain. We tested whether 1 % lidocaine admixed with Tc-99m affects feasibility of SLN mapping.
Annals of surgical oncology.Ann Surg Oncol.2013 Aug;20(8):2548-55. doi: 10.1245/s10434-013-2912-y. Epub 2013 Feb 27.
BACKGROUND: A practice standard in sentinel lymph node (SLN) mapping in breast cancer is intradermal injection of technetium-99m sulfur colloid (Tc-99m), resulting in significant patient discomfort and pain. A previous randomized controlled trial showed that adding lidocaine to Tc-99m significantly
PMID 23443947

Alterations in the striatal dopamine system during intravenous methamphetamine exposure: effects of contingent and noncontingent administration.

Laćan G, Hadamitzky M, Kuczenski R, Melega WP.Author information Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.AbstractThe continuing spread of methamphetamine (METH) abuse has stimulated research aimed at understanding consequences of its prolonged exposure. Alterations in nigrostriatal dopamine (DA) system parameters have been characterized in experimental studies after discontinuation of long-term METH but fewer studies have included similar assessments during METH exposure. Here, we report METH plasma pharmacokinetics and striatal DA system alterations in rat after noncontingent and contingent METH administration for 7.5 weeks. Escalating METH exposure was delivered by dynamic infusion (DI) that incorporated a "humanized" plasma METH half life or by intravenous self-administration (IVSA) that included binge intakes. Kinetic modeling of DI and IVSA for 24 h periods during the final week of METH exposure showed that plasma METH levels remained between 0.7 and 1.5 µM. Animals were sacrificed during their last METH administration for autoradiography assessment using [³H]ligands and D2 agonist-induced [³⁵S]GTPγS binding. DA transporter binding was decreased (DI, 34%; IVSA, 15%) while vesicular monoamine transporter binding and substantia nigra DA cell numbers were unchanged. Decreases were measured for D2 receptor (DI and IVSA, 15-20%) and [³⁵S]GTPγS binding (DI, 35%; IVSA, 18%). These similar patterns of DI and IVSA associated decreases in striatal DA markers reflect consequences of cumulative METH exposure and not the drug delivery method. For METH IVSA, individual differences were observed, yet each animal's total intake was similar within and across three 24-h binges. IVSA rodent models may be useful for identifying molecular mechanisms that are associated with METH binges in humans.
Synapse (New York, N.Y.).Synapse.2013 Aug;67(8):476-88. doi: 10.1002/syn.21654. Epub 2013 Mar 19.
The continuing spread of methamphetamine (METH) abuse has stimulated research aimed at understanding consequences of its prolonged exposure. Alterations in nigrostriatal dopamine (DA) system parameters have been characterized in experimental studies after discontinuation of long-term METH but fewer
PMID 23417852

Japanese Journal

沖縄県那覇市で採取されたエアロゾル中硫酸イオン濃度とその硫黄同位体比

只野沙千絵,赤田尚史,金井豊,上田晃,柳澤文孝
RADIOISOTOPES 63(4), 183-189, 2014
那覇市で採取した大気エアロゾルの分析を行い，以下のことが明らかとなった。・大気エアロゾル重量濃度には海塩粒子が寄与していた。・夏季の非海塩性硫酸イオン濃度には，揮発性硫黄酸化物起源の硫酸イオンが大きく寄与していた。・冬季の非海塩性硫酸イオン濃度には，大陸起源の硫黄化合物が寄与していた。
NAID 130004511700

チャコールシートを用いた細胞培養時の^<35>S標識アミノ酸安全取扱法

山下順助,五十嵐美枝子,武山久志
Radioisotopes 61(8), 411-414, 2012-08-15
家庭用プラスチック容器とチャコールシートを用いて，35S標識アミノ酸を用いた培養実験における周辺の汚染防止法を開発した。通常の培養では培養器内加湿用バット内の水及びガラス内扉から大量の汚染が検出されたが，チャコールシートを用いた容器内で培養した場合は全く汚染が検出されなかった。また，使用したチャコールシートからは極めて大量の35Sが検出され，シートが35Sの高い吸着能を有することが示された。
NAID 10030944497

硫黄同位体比と210Pb濃度を用いた大陸起源エアロゾルの検討

小谷卓,柳澤文孝,金井豊,宮岡明子,赤田尚史
RADIOISOTOPES 61(2), 65-70, 2012
大気エアロゾルの供給源を明らかにする手法の一つとして，大陸起源エアロゾルの指標として利用されてきた大気中210Pb濃度と非海塩性硫酸イオンの硫黄同位体比(nssδ34S)を組み合わせて利用することを試みた。その結果，両者には正の相関が認められ，両者を組み合わせた方が，より大陸起源エアロゾルの指標として有効であった。
NAID 130004511638