Ultrafast LC method for purification and metabolite analysis of PET probes.

abstract：:The pituitary gonadotropins FSH and LH are secreted into blood as dimeric glycoproteins which display a wide heterogeneity when submitted to technique of separation based on electric charge. That supports the assumption of a major role of the carbohydrates moieties as a source of heterogeneity. No clear difference how...

journal_title：Nuclear medicine and biology

authors： Roger M,Lalhou N

更新日期：1994-04-01 00:00:00

abstract：INTRODUCTION:3'-Deoxy-3'-[(18)F]fluorothymidine ([(18)F]FLT) shows great potential as a tracer for proliferative studies with PET. However, its regular application is often limited by low radiochemical yields and the use of a troublesome HPLC separation. Moreover, a high content of ethanol, at least one-fold higher tha...

journal_title：Nuclear medicine and biology

authors： Pascali C,Bogni A,Fugazza L,Cucchi C,Crispu O,Laera L,Iwata R,Maiocchi G,Crippa F,Bombardieri E

更新日期：2012-05-01 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

authors： Cheng D,Rusckowski M,Pretorius PH,Chen L,Xiao N,Liu Y,Liu G,Liang M,Liu X,Dou S,Hnatowich DJ

更新日期：2011-08-01 00:00:00

abstract：:In this study we demonstrated that significant egress of FDG from myocardium occurs within the first hour after tracer injection leading to nonlinear Patlak plots. There are also significant amounts of acidic FDG metabolites present in the blood. However, the impact of these metabolites on the estimates of myocardial ...

journal_title：Nuclear medicine and biology

authors： Herrero P,Dence CS,Sharp TL,Welch MJ,Gropler RJ

更新日期：2004-10-01 00:00:00

abstract：:Metabolic studies of (111)In-DTPA-labeled polypeptides and peptides showed that the radiolabeled (poly)peptides generated (111)In-DTPA-adducts of amino acid that possess long residence times in the lysosomal compartment of the tissues where (poly)peptides accumulated. However, a recent study suggested that metal-chela...

journal_title：Nuclear medicine and biology

authors： Akizawa H,Arano Y,Mifune M,Iwado A,Saito Y,Uehara T,Ono M,Fujioka Y,Ogawa K,Kiso Y,Saji H

更新日期：2001-05-01 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

authors： Haberkorn U,Kinscherf R,Krammer PH,Mier W,Eisenhut M

更新日期：2001-10-01 00:00:00

abstract：:The specific binding of [(11)C]doxepin, which has been used as a radioligand for mapping histamine H(1) receptors in human brain by positron emission tomography, was evaluated in five animal species. In mice the [(11)C]doxepin uptake was reduced by treatment with cold doxepin and two H(1) receptor antagonists, but not...

journal_title：Nuclear medicine and biology

authors： Ishiwata K,Kawamura K,Wang WF,Tsukada H,Harada N,Mochizuki H,Kimura Y,Ishii K,Iwata R,Yanai K

更新日期：2004-05-01 00:00:00

abstract：:We report herein the preparation and biological evaluation of two radioastatinated biotin conjugates, (3-[211At]astatobenzoyl)norbiotinamide and ((5-[211At]astato-3-pyridinyl)carbonyl)norbiotinamide. Both conjugates were stable in the presence of human serum and cerebrospinal fluid as well as murine serum, indicating ...

journal_title：Nuclear medicine and biology

authors： Foulon CF,Alston KL,Zalutsky MR

更新日期：1998-02-01 00:00:00

abstract：:Liposomes encapsulating both glutathione and deferoxamine were labeled with 99mTc-HMPAO and 111In-oxine at the same time. These dual radiolabeled liposomes were intravenously injected in rats with S. aureus infection in thigh. The target-to-background ratio (T/BG) increased from 2.9 at 2 h to 4.4 at 8 h in 99mTc image...

journal_title：Nuclear medicine and biology

authors： Awasthi VD,Goins B,Klipper R,Phillips WT

更新日期：1998-02-01 00:00:00

abstract：INTRODUCTION:Pathological formation of fibrosis, is an important feature in many diseases. Fibrosis in liver and pancreas has been associated to metabolic disease including type 1 and 2 diabetes. The current methods for detecting and diagnosing fibrosis are either invasive, or their sensitivity to detect fibrosis in ea...

journal_title：Nuclear medicine and biology

authors： Rosestedt M,Velikyan I,Rosenström U,Estrada S,Åberg O,Weis J,Westerlund C,Ingvast S,Korsgren O,Nordeman P,Eriksson O

更新日期：2020-11-28 00:00:00

abstract：INTRODUCTION:The myeloperoxidase inhibitor AZD3241 has been selected as a candidate drug currently being developed to delay progression in patients with neurodegenerative brain disorders. Part of the decision tree for translation of AZD3241 into clinical studies included the need for assessment of brain exposure in non...

journal_title：Nuclear medicine and biology

authors： Johnström P,Bergman L,Varnäs K,Malmquist J,Halldin C,Farde L

更新日期：2015-06-01 00:00:00

abstract：:A paired-label biodistribution was performed in athymic mice bearing SK-N-SH human neuroblastoma xenografts to compare the tissue uptake of meta-[211At]astatobenzylguanidine ([211At]MABG) and [131I]MIBG. Significantly higher (p < 0.05) uptake of [211At]MABG was seen in tumor (3.8 +/- 0.8% ID/g vs. 3.1 +/- 0.7% ID/g at...

journal_title：Nuclear medicine and biology

authors： Vaidyanathan G,Friedman HS,Keir ST,Zalutsky MR

更新日期：1996-08-01 00:00:00

abstract：:We have investigated whether [186Re]-labeled chimeric monoclonal antibody 323/A3 (MAb c-323/A3) is as effective as [186Re]-labeled mouse 323/A3 (m-323/A3) in the growth inhibition of human ovarian cancer xenografts OVCAR-3 and FMa. [186Re] was conjugated to MAbs with the use of the chelate S-benzoylmercaptoacetyltrigl...

journal_title：Nuclear medicine and biology

authors： Kievit E,van Gog FB,Schlüper HM,van Dongen GA,Pinedo HM,Boven E

更新日期：1998-01-01 00:00:00

abstract：:Using positron emission tomography (PET) and nitric oxide radiolabeled with nitrogen-13 (half-life 9.97 min) we probed the distribution and kinetics of inhaled nitric oxide in anesthetized dogs. The washout of this gas after inhalation was much slower than that observed for [13N]nitrogen gas, demonstrating its uptake ...

journal_title：Nuclear medicine and biology

authors： McCarthy TJ,Dence CS,Holmberg SW,Markham J,Schuster DP,Welch MJ

更新日期：1996-08-01 00:00:00

abstract：INTRODUCTION:This study investigated radiolabeled bacteriophages for specific detection of infection through gamma imaging. Previously, a (99m)Tc-labeled M13 phage demonstrated specific binding for its host Escherichia coli in vitro and in mice through imaging. METHODS:This study was extended to phages P22, E79, VD-13...

journal_title：Nuclear medicine and biology

authors： Rusckowski M,Gupta S,Liu G,Dou S,Hnatowich DJ

更新日期：2008-05-01 00:00:00

abstract：:Positron-emission tomography (PET) provides potential in neuropsychiatric drug development by expanding knowledge of drug action in the living human brain and reducing time consumption and costs. The 5-hydroxytryptamine(1A) (5-HT(1A)) receptor is of central interest as a target for the treatment of anxiety, depression...

journal_title：Nuclear medicine and biology

authors： Andrée B,Halldin C,Thorberg SO,Sandell J,Farde L

更新日期：2000-07-01 00:00:00

abstract：:A paired-label study was performed in athymic mice bearing subcutaneous D-54 MG human glioma xenografts to compare the localization of human/mouse anti-tenascin chimeric antibody 81C6 labeled by reaction with N-succinimidyl 3-[211At]astatobenzoate and N-succinimidyl 3-[131I]iodobenzoate. Over the 48-h observation peri...

journal_title：Nuclear medicine and biology

authors： Zalutsky MR,Stabin MG,Larsen RH,Bigner DD

更新日期：1997-04-01 00:00:00

abstract：:The aim of the study was to evaluate the diagnostic accuracy of scintimammography with Tc-99m MIBI for the detection of breast cancer. Patients with a suspicious lesion detected by palpation or mammography were included in the study. Excisional biopsy was performed on all patients. Mammography was performed within 3 w...

journal_title：Nuclear medicine and biology

authors： Palmedo H,Schomburg A,Grünwald F,Mallmann P,Boldt I,Biersack HJ

更新日期：1996-08-01 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

authors： Lazarova N,Causey PW,Lemon JA,Czorny SK,Forbes JR,Zlitni A,Genady A,Foster FS,Valliant JF

更新日期：2011-11-01 00:00:00

abstract：:The in vitro stability and animal pharmacokinetics of 99mTc bound to Sandoz and C110 IgG antibodies via a modified MAG3 has been compared with the hydrazino nicotinamide (SHNH) moiety as standard. For both antibodies, the stabilities of the label to challenge at up to 50:1 cysteine: IgG molar ratio were comparable, bu...

journal_title：Nuclear medicine and biology

authors： Lei K,Rusckowski M,Chang F,Qu T,Mardirossian G,Hnatowich DJ

更新日期：1996-10-01 00:00:00

abstract：:meta-[18F]Fluorobenzylguanidine ([18F]MFBG) and para-[18F]fluorobenzylguanidine ([18F]PFBG) were synthesized in three steps beginning with a fluoro for nitro exchange reaction on 3- and 4-nitrobenzonitrile, respectively. Overall radiochemical yields were 10-15% for [18F]MFBG and 50-55% for [18F]PFBG in a total synthes...

journal_title：Nuclear medicine and biology

authors： Garg PK,Garg S,Zalutsky MR

更新日期：1994-01-01 00:00:00

abstract：:A simple, rapid, and reproducible micromethod for quantification of sulfhydryl (SH) groups generated after reduction of monoclonal antibody (MAb) disulfide bonds with 2-mercaptoethanol (2-ME) is described. The number of SH groups per molecule of antibody in the 2-ME and in the other reducing agents was calculated from...

journal_title：Nuclear medicine and biology

authors： Iznaga Escobar N,Morales A,Núñez G

更新日期：1996-07-01 00:00:00

abstract：UNLABELLED:In recent years, several PET and SPECT studies have shown loss of striatal dopamine transporter (DAT) binding in amphetamine (AMPH) users. However, the use of DAT SPECT tracers to detect AMPH-induced changes in DAT binding has not been validated. We therefore examined if repeated administration of D-AMPH or ...

journal_title：Nuclear medicine and biology

authors： Booij J,de Bruin K,Gunning WB

更新日期：2006-04-01 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

authors： Tyacke RJ,Robinson ES,Schnabel R,Lewis JW,Husbands SM,Nutt DJ,Hudson AL

更新日期：2002-05-01 00:00:00

abstract：:Mild hydrochloric acid was introduced to a caudal lung section in each of eight dogs to induce injury. Transits of 99mTc-labeled red blood cells (RBC) and [123I]iodoantipyrine (IAP) injected intravenously were recorded by a scintillation camera. Lungs and blood samples were analyzed post-mortem. Peak-to-equilibrium ra...

journal_title：Nuclear medicine and biology

authors： Chu RY,Sidhu N,Basmadjian G,Burow R,Allen EW

更新日期：1993-10-01 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

authors： Jin ZH,Furukawa T,Galibert M,Boturyn D,Coll JL,Fukumura T,Saga T,Dumy P,Fujibayashi Y

更新日期：2011-05-01 00:00:00

abstract：:Synthesis and preliminary biological evaluation of 9-(4-[18F]-fluoro-3-hydroxymethylbutyl)-guanine ([18F]FHBG) is reported. 9-(4-Hydroxy-3-hydroxymethylbutyl)-guanine (penciclovir) 4 was converted to 9-[N2, O-bis-(methoxytrityl)-3-(tosylmethybutyl)]guanine 7 by treatment with methoxytrityl chloride followed by tosylat...

journal_title：Nuclear medicine and biology

authors： Alauddin MM,Conti PS

更新日期：1998-04-01 00:00:00

abstract：INTRODUCTION:⁶⁸Ga-labeled RGD peptides in combination with PET allow non-invasive determination of α(v)β₃ integrin expression which is highly increased during tumor-induced angiogenesis. The aim of this study was to synthesize and evaluate two RGD peptides containing alternative chelating systems, namely [⁶⁸Ga]NS₃-RGD-...

journal_title：Nuclear medicine and biology

authors： Knetsch PA,Petrik M,Rangger C,Seidel G,Pietzsch HJ,Virgolini I,Decristoforo C,Haubner R

更新日期：2013-01-01 00:00:00

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

authors： Halldin C,Högberg T,Farde L

更新日期：1994-05-01 00:00:00

abstract：INTRODUCTION:The cardinal pathological feature of Parkinson's disease (PD) is progressive loss of dopaminergic neurons. Since dopamine transporter (DAT) is a protein located presynaptically on dopaminergic nerve terminals, radioligands that bind to these sites are promising radiopharmaceuticals for evaluation of the in...

journal_title：Nuclear medicine and biology

authors： Liu L,Wang Y,Li B,Jia J,Sun Z,Zhang J,Tian J,Wang X

更新日期：2009-11-01 00:00:00