Abstract:
:Monoclonal antibody (MoAb) fragments are known to have advantages over intact immunoglobulins for radioimmunoscintigraphy. It is less clear whether they are as effective in the delivery of radioimmunotherapy. The imaging and dosimetric properties of an intact MoAb, K-1-21, reactive against human kappa light chains (LC) were compared with that of its F(ab')2 and Fab fragments using a normal rat model system. Two days after injection of 131I-K-1-21 into rats bearing antigen-sepharose implants, gamma camera images showed specific localization of the MoAb to the target (kappa LC) but not to the control (lambda LC) implant. Better images were obtained with K-1-21 F(ab')2 than with Fab or intact antibody. Mean kappa implant: blood ratios were 8.6 +/- 3.9 for Fab, 7.9 +/- 1.8 for F(ab')2 and 2.0 +/- 0.3 for intact K-1-21. The improvement associated with the use of 131I-K-1-21 fragments was, however, achieved at the expense of lower absolute values of activity at the target site. Thus the absorbed dose delivered to the implant by the intact K-1-21 was double that delivered with F(ab')2 and six times that delivered with Fab. As intact K-1-21 also delivered a greater radiation dose to normal tissues, F(ab')2 fragments may have the greatest overall advantages for therapy with radionuclide MoAb conjugates.
journal_name
Nucl Med Communjournal_title
Nuclear medicine communicationsauthors
Walker KZ,Seymour-Munn K,Towson JE,Axiak SM,Raison RL,Bautovitch GJ,Morris J,Basten Asubject
Has Abstractpub_date
1988-07-01 00:00:00pages
517-26issue
7eissn
0143-3636issn
1473-5628journal_volume
9pub_type
杂志文章abstract:OBJECTIVES:N staging is a key factor when considering the choice of treatment for non-small-lung cancer. It is possible that there is a correlation between N2 metastasis and some risk factors. The objective of the present study was to evaluate associations between several risk factors and N(2) metastasis using univaria...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0000000000000144
更新日期:2014-09-01 00:00:00
abstract::Radioiodinated meta-iodobenzylguanidine (MIBG) is used routinely for imaging and targeted radiotherapy of tumours derived from the neural crest. Since active uptake of MIBG by the noradrenaline transporter (NAT) makes a greater contribution to total drug accumulation than passive uptake when MIBG is present at low con...
journal_title:Nuclear medicine communications
pub_type: 临床试验,杂志文章
doi:10.1097/00006231-200005000-00005
更新日期:2000-05-01 00:00:00
abstract::Bone scintigraphy has been shown to be sensitive in determining bone involvement in patients with malignancy, but it does not allow the assessment of bone marrow lesions in early disease. The aim of this study was to detect bone marrow invasion using 99Tcm-labelled monoclonal antigranulocyte antibody (AgMoAb) in patie...
journal_title:Nuclear medicine communications
pub_type: 临床试验,杂志文章
doi:10.1097/00006231-199710000-00013
更新日期:1997-10-01 00:00:00
abstract::Radioiodine therapy using oral administration of Iodine-131 (I) is a widespread employed strategy for the treatment of hyperthyroidism and thyroid cancer. Such a therapy requires well-trained staff, equipment and procedures regarding radiation safety. The aims of this work are to report an incidental experience of rad...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0000000000001276
更新日期:2020-11-01 00:00:00
abstract::The aim of the study was to evaluate pulmonary nodules (PNs) by incorporating time sensitivity (S) factor in the retention index (RI) and compare with the traditional fixed interval method. After obtaining approval from the Human Investigations Committee, 97 PNs from 81 patients (age=70±11) referred for dual-time fluo...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0000000000000190
更新日期:2014-12-01 00:00:00
abstract:OBJECTIVE:The aim of the study was to determine the fraction of administered activity that was excreted and retained by a small cohort of patients who each received treatment with radium-223 dichloride (Ra). Ra is an α-emitting radionuclide that has been approved for use in the treatment of bone metastases that are sec...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0000000000000783
更新日期:2018-02-01 00:00:00
abstract::To evaluate the clinical utility of 123I-labelled 15-(p-iodophenyl)-3-R, S-methylpentadecanoic acid (123I-BMIPP), myocardial scintigraphy using 123I-BMIPP was performed in 13 patients with hypertrophic cardiomyopathy (HCM), and the findings were compared with those of 201Tl. The uptake of each tracer was scored visual...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/00006231-199406000-00008
更新日期:1994-06-01 00:00:00
abstract::To evaluate the incidence, severity and clinical course of right ventricular (RV) involvement after acute inferior myocardial infarction (IMI), 78 patients (pts) with IMI were investigated by both 99Tcm-pyrophosphate (PYP) scan and gated blood pool scan (GBPS). GBPS was performed at admission and 10 days, whereas 99Tc...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/00006231-198612000-00007
更新日期:1986-12-01 00:00:00
abstract:AIM:In patients with differentiated thyroid carcinoma (DTC), metastases can either show iodine-131 (I) uptake on whole-body scintigraphy or F-2-fluoro-2-deoxy-D-glucose (F-FDG) uptake on combined PET and X-ray computed tomography (PET/CT), or a mix of both. The present study investigates the relationship between uptake...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0000000000000025
更新日期:2014-02-01 00:00:00
abstract::In this cross-sectional study, the relative importance of anthropometric factors and that of biological parameters on bone mineralization were evaluated and their practical implications inferred on the choice of the parameter to be used for the estimation of bone mineralization. A close relationship between anthropome...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/00006231-199103000-00003
更新日期:1991-03-01 00:00:00
abstract:OBJECTIVE:A lack of response to cardiac resynchronization therapy (CRT) has been reported in 20-40% of heart failure patients with left ventricular (LV) dyssynchrony who underwent treatment based on the established guidelines. The study aimed to investigate the relationship between (99m)Tc-tetrofosmin ((99m)Tc-TF) myoc...
journal_title:Nuclear medicine communications
pub_type: 临床试验,杂志文章
doi:10.1097/MNM.0000000000000150
更新日期:2014-09-01 00:00:00
abstract:OBJECTIVE:Paragangliomas are rare tumours of neural crest origin that express high levels of somatostatin receptor. Ga-68 DOTATATE PET/CT is a widely accepted method for imaging of neuroendocrine tumours. This study was performed to review a Ga-68 DOTATATE PET/CT patient database and to establish the impact of the moda...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0000000000001130
更新日期:2020-02-01 00:00:00
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journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0000000000001022
更新日期:2019-07-01 00:00:00
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journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0000000000000460
更新日期:2016-04-01 00:00:00
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journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0b013e328360d8ec
更新日期:2013-06-01 00:00:00
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journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0000000000000340
更新日期:2015-09-01 00:00:00
abstract::In normal adults, the maintenance of phosphate balance involves the reabsorption of 85-90% of filtered phosphate by the proximal tubule. At a glomerular filtration rate (GFR) of 125 ml min-1 and a plasma phosphate concentration of 1.3 mmol l-1, the filtered phosphate is approximately 235 mmol day-1. Following intraven...
journal_title:Nuclear medicine communications
pub_type: 临床试验,杂志文章
doi:10.1097/00006231-199807000-00011
更新日期:1998-07-01 00:00:00
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journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/00006231-200207000-00012
更新日期:2002-07-01 00:00:00
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journal_title:Nuclear medicine communications
pub_type: 临床试验,杂志文章
doi:10.1097/MNM.0000000000001086
更新日期:2019-11-01 00:00:00
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journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/00006231-198511000-00009
更新日期:1985-11-01 00:00:00
abstract::Mammography is the screening test of choice for breast cancer. Its low specificity leads to a large number of unnecessary biopsies. Scintimammography, with either Tc-sestamibi (MIBI) or Tc-anti-carcinoembryonic antigen (CEA) Fab', has been proposed as a non-invasive test to lower the high false positive rate of mammog...
journal_title:Nuclear medicine communications
pub_type: 临床试验,杂志文章
doi:10.1097/00006231-200303000-00009
更新日期:2003-03-01 00:00:00
abstract:OBJECTIVES:Single-photon emission computed tomography ventilation/perfusion (SPECT V/Q) imaging is recommended both by the Society of Nuclear Medicine and by the European Association of Nuclear Medicine for the diagnosis of pulmonary embolism. However, respiratory motion produces image blurring and degradation of detai...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0000000000000015
更新日期:2014-02-01 00:00:00
abstract::The aim of this study was to ascertain whether knee SPET can localize lesion sites in patients with internal derangements of the knee. We performed knee SPET as a pre-arthroscopic examination in 63 consecutive patients. SPET imaging was performed with a triple-headed SPET camera 4 h after the injection of 99Tcm-methyl...
journal_title:Nuclear medicine communications
pub_type: 临床试验,杂志文章
doi:10.1097/00006231-200001000-00017
更新日期:2000-01-01 00:00:00
abstract::A method is described for studying protein kinetics in pleural effusions in humans. In 15 patients with pleural effusions from a variety of causes, protein inflow was monitored by measuring the rate of appearance in the effusion of the plasma protein transferrin, radiolabelled in vivo by intravenous injection of 113In...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/00006231-199206000-00043
更新日期:1992-06-01 00:00:00
abstract::The application of a Well-type germanium semiconductor detector creates new possibilities in erythrocyte survival studies. Using 51Cr, the effective dose equivalent in a standard procedure can be reduced from approximately 780 to 2 microSv. The properties of the detector, namely, high efficiency and high energy resolu...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/00006231-199105000-00010
更新日期:1991-05-01 00:00:00
abstract:AIM:The aim of this study was to assess ablation outcome after a second ablation dose and compare the ablation rate after low and high reablation doses of iodine-131 ((131)I) after failure of the first ablation with 3700 MBq. PATIENTS AND METHODS:The study included 81 patients with papillary thyroid cancer; they faile...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0000000000000233
更新日期:2015-02-01 00:00:00
abstract:OBJECTIVE:To evaluate the potential of (99m)Tc-pamidronate ((99m)Tc-APD) against (99m)Tc-medronate ((99m)Tc-MDP) as a new bone-seeking agent using intact bone and fractured femur in a rat model. METHODS:(99m)Tc-APD was prepared by the stannous reduction method. Scintigraphic images were obtained at 2 h and 24 h after ...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0b013e328013eb74
更新日期:2007-02-01 00:00:00
abstract::Medullary thyroid carcinoma (MTC) is a neuroendocrine tumour characterized by the production and secretion of calcitonin. MTC tumours may express functional somatostatin receptors (hSSTR). A significant proportion of hSSTR receptor-positive MTC tumours, including metastatic disease, may be visualized in vivo through 1...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/00006231-199609000-00013
更新日期:1996-09-01 00:00:00
abstract:AIM:To report our data concerning the changes in post-stress and at-rest left ventricular ejection fraction and ventricular volumes in patients with thallium gated SPECT. METHODS:Post-stress and at-rest thallium gated SPECT was performed in 629 consecutive patients; left ventricular ejection fraction (LVEF), left vent...
journal_title:Nuclear medicine communications
pub_type: 临床试验,杂志文章
doi:10.1097/01.mnm.0000167648.29853.93
更新日期:2005-07-01 00:00:00
abstract:INTRODUCTION:Bispecific monoclonal antibodies (bsMAbs) have been developed as a pretargeting tool to reduce background activity, thereby increasing target to background (T : B) ratios. To enhance visualization of small lesions in vivo, we have used the pretargeting approach of bsMAb and negatively charged polymers radi...
journal_title:Nuclear medicine communications
pub_type: 杂志文章
doi:10.1097/MNM.0b013e32834af77b
更新日期:2011-12-01 00:00:00