Abstract：
:To improve standardization in analytical reagents we investigated Chloramine-T radioiodination (125I) of several biomolecules based on the use of a single amount of the oxidizing agent Chloramine-T as the limiting reagent being exhausted during the course of the reaction. Whenever the labeling yield resulted in less than one atom 125I/molecule, a second amount of the oxidizing agent was added. Thereafter, the integrity of the various biomolecules was assessed using radioimmunoassays, radioreceptor binding assays, or radioimmunometric assays. Purification yields were done by gel permeation (56% +/- 19%, n=230) or by precipitation with trichloroacetic acid (59% +/- 19%, n=230). Specific activity (117 +/- 61 MBq/nmol) and the degree of iodine incorporation (1.4 +/- 0.8 atoms of 125I/molecule) were achieved after 300 sec of incubation. A second addition of Chloramine-T resulted in an increased labeling yield of all biomolecules tested by a mean factor of 1.8 +/- 0.9. After the second addition of Chloramine-T, we observed for some biomolecules a significant (p<0.001) decreased effect in biological performance. In conclusion, the use of Chloramine-T as a limiting reagent resulted in molecules with appropriate immunological and biological performance. In general, tracers were minimally damaged and assessment of the shelf life as well as storing conditions showed the usefulness of the standardization of biomolecule labeling.
journal_name
Nucl Med Bioljournal_title
Nuclear medicine and biologyauthors
Robles AM,Balter HS,Oliver P,Welling MM,Pauwels EKdoi
10.1016/s0969-8051(01)00261-xkeywords:
subject
Has Abstractpub_date
2001-11-01 00:00:00pages
999-1008issue
8eissn
0969-8051issn
1872-9614pii
S096980510100261Xjournal_volume
28pub_type
杂志文章abstract：:Among the ways to deliver comparatively large amounts of boron to cells in vitro for boron neutron capture studies is the linkage of a boronated macromolecule such as polylysine to an antibody. In order to reduce interference with immunoreactivity, boronated polylysine (BPL) was linked to oligosaccharide moieties on t...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/s0969-8051(01)00297-9
更新日期：2002-02-01 00:00:00
abstract：:Error estimates for arteriovenous difference were calculated by two models, a lag time model and a compartmental model, using Tc99m-diethylenetriaminepentaacetic acid (DTPA) plasma clearance curves from 40 subjects and Tc99m-MAG3 (mercaptoacetyltriglycine) curves from 18 subjects. It was found that correcting for the ...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/s0969-8051(99)00029-3
更新日期：1999-08-01 00:00:00
abstract：:Fluorine-18 labeled 2beta-carbomethoxy-3beta-(4-chlorophenyl)-8-(2-fluoroethyl)nort ropane (FECNT) was synthesized in the development of a dopamine transporter (DAT) imaging ligand for positron emission tomography (PET). The methods of radiolabeling and ligand synthesis of FECNT, and the results of the in vitro charac...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/s0969-8051(99)00080-3
更新日期：2000-01-01 00:00:00
abstract：:[see text for equation] Nucleophilic [(18)F]fluorination of some halo- and mesyloxyalkanes to the corresponding [(18)F]fluoroalkanes with fluoride-18 obtained from an (18)O(p,n) [(18)F]F reaction, using an ionic liquid as a reaction medium, has been studied as a new method for fluorine-18 labeling. Of the various ioni...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/s0969-8051(03)00017-9
更新日期：2003-05-01 00:00:00
abstract：:The Cu(I)-assisted aromatic halogen exchange proved useful for preparation of macroscopic amounts of 2-iodophenyl-metyrapone as well as for the n.c.a. radioiodinated analogue. Semi-preparative HPLC-isolation provided the compound with high purity for use as chromatographic standard and for the determination of the inh...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/0969-8051(95)02033-0
更新日期：1995-11-01 00:00:00
abstract：INTRODUCTION:Noninvasive imaging of small animals to measure biodistributions and pharmacokinetics of radiolabeled agents is increasingly seen as an effective alternative to external counting of tissues obtained by sacrifice and dissection. However, we have observed important disagreements in measuring the accumulation...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2011.02.004
更新日期：2011-08-01 00:00:00
abstract：:We evaluated 99mTc-labeled mercaptoacetyltriglycine (99mTc-MAG3)-biocytin as a hepatobiliary imaging agent in the absence and presence of bilirubin in mice. We then compared its pharmacokinetic parameters; peak liver/heart activity ratio (rmax) and half clearance time (HCT) with those of 99mTc-labeled diisopropyl-imin...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/s0969-8051(98)00077-8
更新日期：1999-01-01 00:00:00
abstract：:In the last few years click chemistry reactions, and in particular copper-catalyzed cycloadditions have been used extensively for the preparation of new bioconjugated molecules such as (18)F-radiolabeled radiopharmaceuticals for positron emission tomography (PET). This study is focused on the synthesis of the Siemens ...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2013.04.003
更新日期：2013-07-01 00:00:00
abstract：PURPOSE:In previous in-vitro and ex-vivo studies we proved the specific uptake of (99m)Tc radiolabeled chondroitin sulfate (CS) in human articular cartilage. As a logical next step for the clinical use for imaging osteoarthritis we investigated in-vivo uptake of (99m)TcCS in dogs. PROCEDURES:The radiolabeling of CS Co...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2016.02.009
更新日期：2016-06-01 00:00:00
abstract：:The premise that, over the course of Alzheimer's disease (AD), changes in the levels of the vesicular acetylcholine transporter (VAChT) occur in parallel with changes to other cholinergic marker proteins provides the basis for the applicability of benzovesamicol derivatives as radioligands for AD studies by single pho...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2007.07.011
更新日期：2007-11-01 00:00:00
abstract：:Radiolabeled lipiodol has been used for targeting liver cancer. We developed a lipiodol solution of (188)Re-TDD (2,2,9,9-tetramethyl-4,7-diaza-1,10-decanedithiol) and investigated its feasibility for the treatment of liver cancer. The lipiodol solution of (188)Re-TDD was well-retained in the lipiodol phase in vitro. A...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/s0969-8051(00)00208-0
更新日期：2001-02-01 00:00:00
abstract：INTRODUCTION:[(18)F]Nifene is a novel radiotracer specific to the nicotinic acetylcholine α4β2 receptor class. In preparation for using this tracer in humans we have performed whole-body PET studies in mice to evaluate the in vivo biodistribution and dosimetry of [(18)F]Nifene. METHODS:Seven BALB/c mice (3 males, 4 fe...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2012.11.004
更新日期：2013-02-01 00:00:00
abstract：:A new positron emission tomography (PET) radioligand for the serotonin transporter (SERT), [(11)C]2-[2-[[(dimethylamino)methyl]phenyl]thio]-5-(2-fluoroethyl)phenylamine ([(11)C]AFE, 12), was synthesized and evaluated in vivo in rats and baboons. [(11)C]AFE (12) was prepared from its monomethylamino precursor 11 by rea...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2004.07.003
更新日期：2004-11-01 00:00:00
abstract：INTRODUCTION:HDAC6, a structural and functional distinct member of the HDAC-family, shows great promise as a target to treat several cancers and neurodegenerative diseases. Several clinical trials are evaluating HDAC6 inhibitors in solid tumours and haematological malignancies, but so far no HDAC6 inhibitor has receive...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2019.05.004
更新日期：2019-01-01 00:00:00
abstract：:Melanin, a natural biological pigment present in many organisms, has been found to exhibit multiple functions. An important property of melanin is its ability to chelate metal ions strongly, which might be developed as an iron chelator for iron overload therapy. Herein, we prepared the ultrasmall water-soluble melanin...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2016.05.014
更新日期：2016-09-01 00:00:00
abstract：INTRODUCTION:Positron emission tomography (PET) is extensively used in clinical oncology for tumor detection. This study aimed to explore the application of the radiotracers [18F]fluorodeoxyglucose ([18F]FDG), 3'-deoxy-3'- [18F]fluorothymidine ([18F]FLT), and [18F]fluoromisonidazole ([18F]FMISO) in the diagnosis and mo...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2019.07.004
更新日期：2019-01-01 00:00:00
abstract：:A positron-emitter labeled radioligand for the glycine-binding site of the N-methyl-D-aspartate (NMDA) receptor, [(11)C]L-703,717, was examined for its ability to penetrate the brain in animals by simultaneous use with drugs having high-affinity separate binding sites on human serum albumin. [(11)C]L-703,717 has poor ...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/s0969-8051(00)00096-2
更新日期：2000-05-01 00:00:00
abstract：:We are interested in imaging cell death in vivo using annexin V radiolabeled with (124)I. In this study, [(124)I]4IB-annexin V and [(124)I]4IB-ovalbumin were made using [(124)I]N-hydroxysuccinimidyl-4-iodobenzoate prepared by iododestannylation of N-hydroxysuccinimidyl-4-(tributylstannyl)benzoate. [(124)I]4IB-annexin ...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2005.02.002
更新日期：2005-05-01 00:00:00
abstract：:Liver accumulation of 99mTc-DL-homocysteine (99mTc-Hcy), which had been found to accumulate in several experimental tumors, was studied using experimental hepatitis models of rats. The distribution of this compound in liver of rats treated with CCl4 (25-100 microL/100 g body weight) was more than five times higher tha...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/0969-8051(93)90091-8
更新日期：1993-11-01 00:00:00
abstract：INTRODUCTION:Molecular imaging of the earliest events related to the development of acute lung injury (ALI)/acute respiratory distress syndrome (ARDS) could facilitate therapeutic development and patient management. We previously reported that 18F-fluoro-2-deoxyglucose (18F-FDG) PET identifies ALI/ARDS prior to radiogr...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2017.01.005
更新日期：2017-05-01 00:00:00
abstract：:A no-carrier-added, high specific activity synthesis of [11C-methyl]-thymidine is reported. Reaction of 3'. 5'-O-bis-(tetrahydropyramyl)-5-bromo-2'-deoxyuridine with n-butylithium produced a diamion which was alkylated with [11C]-methyl iodide, and on subsequent hydrolysis, yielded [IIC-methyl]-thymidine. The labeled ...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/0969-8051(95)00027-u
更新日期：1995-08-01 00:00:00
abstract：INTRODUCTION:After its intravenous injection, [18F]fluorocholine is oxidized by choline-oxidase into its main plasma metabolite, [18F]fluorobetaine. If PET kinetic modeling quantification of [18F]fluorocholine uptake is intended, the plasma input time-activity-curve of the parent tracer must be obtained, i.e., the frac...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2019.08.003
更新日期：2019-01-01 00:00:00
abstract：:A new tetrahydrazido-germanium (GeTH) ligand was synthesized, characterized and complexed with 99mTc. The negatively charged 99mTc-chelate was shown to form in high yields at neutral pH in the absence of other reducing agents and exhibits high in vitro and in vivo stability. ...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/0969-8051(94)90184-8
更新日期：1994-11-01 00:00:00
abstract：:Since elevated levels of gelatinases [matrix metalloproteinase (MMP)-2 and MMP-9] are associated with a poor prognosis in cancer patients, these enzymes are potential targets for tumor imaging. In the present study, a cyclic decapeptide, cCTTHWGFTLC (CTT), was selected as a mother compound because of its selective inh...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2007.04.002
更新日期：2007-07-01 00:00:00
abstract：:An iodinated analog of PK11195, 1-(2-chlorophenyl)-N-methyl-N-(1-methylpropyl)isoquinoline-3-carboxamide , a specific antagonist of the peripheral-type benzodiazepine receptor (omega 3), has been synthesized in three steps with an overall chemical yield of 40%. Both [123I]- and [125I]-Iodo-PK11195 have been synthesize...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/0969-8051(95)02007-1
更新日期：1996-01-01 00:00:00
abstract：:Three new radiolabeled compounds, [(11)C]SNC80 ((+)-4-[(αR)-α-{(2S,5R)-4-allyl-2,5-dimethyl-1-piperazinyl}-3-[(11)C]methoxybenzyl-N,N-diethylbenzamide), N,N-diethyl-4-[3-methoxyphenyl-1-[(11)C]methylpiperidin-4-ylidenemethyl)benzamide and N,N-diethyl-4-[(1-[(11)C]methylpiperidin-4-ylidene)phenylmethyl]benzamide, were ...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2010.06.002
更新日期：2010-11-01 00:00:00
abstract：INTRODUCTION:The use of α-emitting isotopes for radionuclide therapy is a promising treatment strategy for small micro-metastatic disease. The radioisotope (213)Bi is a nuclide that has found substantial use for targeted α-therapy (TAT). The relatively unexplored aqueous chemistry of Bi(3+), however, hinders the develo...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2014.12.007
更新日期：2015-05-01 00:00:00
abstract：:The aim of this work was to develop a method to produce 18F-labeled fluorine gas ([18F]F2) with high specific radioactivity (SA, radioactivity/mass-ratio). 18F-Labeled methyl fluoride ([18F]CH3F) was synthesized from [18F]F-aq and mixed with carrier F2 in an inert neon matrix. The constituents were atomized in an elec...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/s0969-8051(97)00078-4
更新日期：1997-10-01 00:00:00
abstract：:L-2,4-Diamino[4-11C]butyric acid (DAB) was synthesized by an enzyme catalysed carrier added (0.1 micromol KCN) reaction of hydrogen [11C]cyanide with O-acetyl-L-serine followed by reduction. L-[11C]DAB was obtained with a radiochemical purity higher than 96% and with a decay corrected radiochemical yield of 30-40% wit...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/s0969-8051(97)00032-2
更新日期：1997-08-01 00:00:00
abstract：:In this study, we present the evaluation of two new ternary ligand (99m)Tc complexes [(99m)Tc(HYNIC tetramer)(tricine)(L)] [L=isonicotinic acid (ISONIC) and 2,5-pyridinedicarboxylic acid (PDA)] as potential radiotracers for tumor imaging. Athymic nude mice bearing MDA-MB-435 human breast cancer xenografts were used to...
journal_title：Nuclear medicine and biology
pub_type： 杂志文章
doi：10.1016/j.nucmedbio.2007.08.006
更新日期：2008-01-01 00:00:00
