Abstract:
METHODS:Anesthetized pigs were studied with [(11)C]-labeled fatty acids (FAs) with carbon chain length ranging from 8 to 16 carbon atoms, during control conditions and during inhibition of carnitine-palmitoyl transferase I (CPT I) with oxfenicine. The myocardial uptake of [(11)C]-FAs from blood was measured together with the relative distribution of [(11)C]-acyl-CoA between rapid mitochondrial oxidation and incorporation into slow turnover lipid pools in the heart. RESULTS:During baseline conditions, the fractional oxidative utilization of palmitate was almost as high as that of carnitine-independent short-chain FAs, unless the carnitine shuttle was inhibited by high levels of lactate. Inhibition of CPT I almost completely blocked the oxidative pathway for palmitic acid and reduced the fractional oxidative utilization, while the rate of oxidative metabolism of acyl-CoA was unaffected. CONCLUSIONS:[(11)C]-Labeled FAs allow rapid oxidation to be well separated from esterification into slow turnover lipid pools in the heart of anaesthetized pigs. The fractional oxidative utilization of [(11)C]-palmitate serves well to characterize, in vivo, the carnitine-dependent transfer of long-chain FAs.
journal_name
Nucl Med Bioljournal_title
Nuclear medicine and biologyauthors
Angsten G,Valind S,Takalo R,Neu H,Meurling S,Långström Bdoi
10.1016/j.nucmedbio.2005.03.003keywords:
subject
Has Abstractpub_date
2005-07-01 00:00:00pages
495-503issue
5eissn
0969-8051issn
1872-9614pii
S0969-8051(05)00071-5journal_volume
32pub_type
杂志文章abstract::NCQ 115 ((+)-(R)-5-bromo-N-((1-(4-fluorobenzyl)-2-pyrrolidinyl)methyl)-2, 3-dimethoxybenzamide) is a selective dopamine D-2 receptor antagonist. NCQ 115 has a fluorine in a synthetically suitable position in the parent compound and was therefore suggested as a potential 18F-labelled radioligand for positron emission t...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/0969-8051(94)90028-0
更新日期:1994-05-01 00:00:00
abstract:INTRODUCTION:Several psychiatric and neurodegenerative diseases are associated with malfunction of brain norepinephrine transporter (NET). However, current clinical evaluations of NET function are limited by the lack of sufficiently sensitive methods of detection. To this end, we have synthesized exo-3-[(6-[18F]fluoro-...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2017.10.005
更新日期:2018-01-01 00:00:00
abstract::The imaging of the distribution of beta-amyloid (Abeta) plaques in the brain is becoming an important diagnostic modality in Alzheimer's disease (AD). Here, we synthesized novel benzothiophene derivatives and labeled them with (18)F for the potential diagnostic imaging of AD patients using positron emission tomography...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2006.06.006
更新日期:2006-08-01 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::We describe the synthesis of 2'-[(18)F]fluoroflumazenil (FFMZ), which differs from the typically used [(18)F]fluoroethylflumazenil (FEFMZ) for benzodiazepine receptor imaging. For one-pot one-step labeling, the precursors, 2'-tosyloxyflumazenil (TFMZ) and 2'-mesyloxyflumazenil (MFMZ), were synthesized in three steps. ...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/s0969-8051(03)00030-1
更新日期:2003-07-01 00:00:00
abstract::High-affinity iodine- and ethyl-C-5 substituted analogs of 4-hydroxy-3-(3-[11C]methoxyphenyl)-2(1H)-quinolone ([11C]4HQ) were synthesized as new positron emission tomography radioligands for the glycine-binding sites of the N-methyl-d-aspartate (NMDA) ion channel. Although both radioligands showed high in vitro specif...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2007.10.007
更新日期:2008-02-01 00:00:00
abstract::The imaging of apoptosis represents an attractive diagnostic goal in the area of tumor therapy, degenerative diseases and organ transplantation. Since caspases play a key role during the early period of the intracellular signal cascade of cells undergoing apoptosis we considered benzyloxycarbonyl-Val-Ala-DL-Asp(O-meth...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/s0969-8051(01)00247-5
更新日期:2001-10-01 00:00:00
abstract::The syntheses and radiolabelling of 27 new N-(alkylaminoalkyl)-4-methoxy-, -4-hydroxy-, and -4-aminobenzamides are described and evaluated in C57B1/6 mice with subcutaneously transplanted B16 melanoma in order to screen the optimal chemical structure for melanoma scintigraphy. Using T1(TFA)3 for 131I- labelling, a ser...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/s0969-8051(97)00024-3
更新日期:1997-07-01 00:00:00
abstract::A recently developed pinhole high-resolution SPECT system was used to measure striatal to non-specific binding ratios in rats (n = 9), after injection of the dopamine transporter ligand (123)I-FP-CIT, and to assess its test/retest reproducibility. For co-alignment purposes, the rat brain was imaged on a 1.5 Tesla clin...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/s0969-8051(03)00046-5
更新日期:2003-08-01 00:00:00
abstract::HeLa S-3 cells were treated with 195mPt-radiolabeled trans-diaminedichloroplatinum(II) (TDDP) under various conditions, and the relationship between lethal effect and the number of Pt atoms binding to DNA, RNA and proteins was examined. The mean lethal concentrations for the cells treated with TDDP at 37 degrees C for...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/0969-8051(93)90068-6
更新日期:1993-05-01 00:00:00
abstract:INTRODUCTION:Ultrasound (US) contrast agents based on microbubbles (MBs) are being investigated as platforms for drug and gene delivery. A methodology for determining the distribution and fate of modified MBs quantitatively in vivo can be achieved by tagging MBs directly with (99m)Tc. This creates the opportunity to em...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2011.04.008
更新日期:2011-11-01 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::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::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::Copper offers a unique selection of radioisotopes ((60)Cu, (61)Cu, (62)Cu, (64)Cu, and (67)Cu) with half-lives ranging from 9.8 min to 61.9 h suitable for imaging and/or radiotherapy. In peptide/antibody targeted radiotherapy one of the most studied chelating agents for copper, 1,4,8,11-tetraazacyclotetradecane-1,4,8,...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章,评审
doi:10.1016/s0969-8051(01)00287-6
更新日期:2002-01-01 00:00:00
abstract::[¹⁸F]FMISO is the most widely validated PET radiotracer for imaging hypoxic tissue. However, as a result of the pharmacokinetics of [¹⁸F]FMISO a 2h wait between tracer administration and patient scanning is required for optimal image acquisition. In order to develop hypoxia imaging agents with faster kinetics, we have...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2014.03.001
更新日期:2014-05-01 00:00:00
abstract::The properties of two prospective positron emission tomography (PET) ligands for the delta-opioid receptor, N1'-fluoroethyl-naltrindole (BU97001) and N1'-fluoroethyl-(14-formylamino)-naltrindole (BU97018) were investigated. Both were antagonists in the mouse vas deferens, and showed high affinity and selectivity, 1.81...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/s0969-8051(02)00300-1
更新日期:2002-05-01 00:00:00
abstract::The serotonin2A (5-HT2A) receptor is implicated in the pathophysiology of schizophrenia and mood disorders, and in vivo studies of this receptor would be of value in studying the pathophysiology of these disorders and in measuring the relationship of clinical response to receptor occupancy for 5-HT2A antagonists such ...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2006.02.001
更新日期:2006-05-01 00:00:00
abstract:OBJECTIVE:(99m)Tc-MDP (technetium-99(m)-labeled methylene diphosphonate) has been widely used as a radiopharmaceutical for bone scintigraphy in cases of metastatic bone disease. (177)Lu is presently considered as an excellent radionuclide for developing bone pain palliation agents. No study on preparing a complex of (1...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2010.09.013
更新日期:2011-04-01 00:00:00
abstract:OBJECTIVES:Serotonin transporters (SERT) play an important role in controlling serotonin concentration in the synaptic cleft and in managing postsynaptic signal transduction. Inhibitors of SERT binding are well known as selective serotonin reuptake inhibitors (SSRIs) such as fluoxetine, sertraline, paroxetine, and esci...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2018.06.008
更新日期:2018-11-01 00:00:00
abstract:UNLABELLED:Gastrin-releasing peptide receptors (GRPr) are a member of the bombesin (BBN) receptor family. GRPr are expressed in high numbers on specific human cancers, including human prostate cancer. Therefore, copper-64 ((64)Cu) radiolabeled BBN(7-14)NH(2) conjugates could have potential for diagnosis of human prosta...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2010.04.016
更新日期:2010-10-01 00:00:00
abstract::Cocaine was initially labeled with carbon-11 in order to track the distribution and pharmacokinetics of this powerful stimulant and drug of abuse in the human brain and body. It was soon discovered that [(11)C]cocaine was not only useful for measuring cocaine pharmacokinetics and its relationship to behavior but that ...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章,评审
doi:10.1016/s0969-8051(01)00211-6
更新日期:2001-07-01 00:00:00
abstract:UNLABELLED:The purpose of this study is to reveal characteristics of (64)Cu-labeled diacetyl-bis(N(4)-methylthiosemicarbazone) ([(64)Cu]Cu-ATSM) during cell proliferation and hypoxia by autoradiography imaging and immunohistochemical staining. METHODS:The intratumoral distributions of [(64)Cu]Cu-ATSM and [(18)F]-2-flu...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2009.01.016
更新日期:2009-05-01 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:INTRODUCTION:Nuclear and optical imaging are complementary in many aspects and there would be many advantages when optical imaging probes are prepared using radionuclides rather than classic fluorophores, and when nuclear and optical dual images are obtained using single imaging probe. METHODS:The luminescence intensi...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2010.09.003
更新日期:2011-04-01 00:00:00
abstract::An ultrafast and efficient high-performance liquid chromatographic (LC) method was developed to purify positron emission tomography (PET) radiopharmaceuticals as well as for metabolite analysis of the plasma sample. Chromatographic separation was achieved on a short (60 mm length) semipreparative (10 mm I.D.) column p...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2009.08.002
更新日期:2010-01-01 00:00:00
abstract::Brofaromine (4-5(-methoxy-7-bromobenzofuranyl)-2-piperidine-HCl) is a potent and selective inhibitor of monoamine oxidase (MAO) A. Two methods for its synthesis and a preliminary positron emission tomography (PET) evaluation in monkey brain are described. The first method, at low carrier concentration of CO2, consiste...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/0969-8051(95)02051-9
更新日期:1996-04-01 00:00:00
abstract::Positron emission tomography (PET), which requires a compound labeled with a positron emitter radioisotope as an imaging probe, is one of the most useful and valuable imaging modalities in molecular imaging. It has several advantages over other imaging modalities, particularly in sensitive and quantitative investigati...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2011.07.005
更新日期:2012-01-01 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:INTRODUCTION:The α(V)β(3) integrin is a well-known transmembrane receptor involved in tumor invasion, angiogenesis and metastasis. Our aim was to evaluate a novel positron emission tomography (PET) probe, (64)Cu-cyclam-RAFT-c(-RGDfK-)(4), for noninvasive visualization and quantification of α(V)β(3) integrin expression....
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2010.11.008
更新日期:2011-05-01 00:00:00