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Puslapis 1 nuo 105 rezultatus
Macrocyclic triamine derived glucose analogues for 99m Tc(CO)3 labeling: synthesis and biological evaluation as potential tumor-imaging agents.
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[99m Tc(CO)3 (H2 O)3 ]+ has attracted great attention among 99m Tc-labeling techniques, due to its ease of preparation, readily substituted water molecules of the precursor fac-[99m Tc(CO)3 (H2 O)3 ]+ by a variety of functional groups, small size and inertness. Bifunctional chelator based on a
Decorated Superparamagnetic Iron Oxide Nanoparticles with Monoclonal Antibody and Diethylene-Triamine-Pentaacetic Acid Labeled with Thechnetium-99m and Galium-68 for Breast Cancer Imaging.
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In this study we developed and tested an iron oxide nanoparticle conjugated with DTPA and Trastuzumab, which can efficiently be radiolabeled with 99m-Tc and Ga-68, generating a nanoradiopharmaceutical agent to be used for SPECT and PET imaging.
The production of iron oxide nanoparticle conjugated
Anti-cancer characteristics and ototoxicity of platinum(II) amine complexes with only one leaving ligand.
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Unlike cisplatin, which forms bifunctional DNA adducts, monofunctional platinum(II) complexes bind only one strand of DNA and might target cancer without causing auditory side-effects associated with cisplatin treatment. We synthesized the monofunctional triamine-ligated platinum(II) complexes,
High-linear energy transfer (LET) alpha versus low-LET beta emitters in radioimmunotherapy of solid tumors: therapeutic efficacy and dose-limiting toxicity of 213Bi- versus 90Y-labeled CO17-1A Fab' fragments in a human colonic cancer model.
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Recent studies suggest that radioimmunotherapy (RIT) with high-linear energy transfer (LET) radiation may have therapeutic advantages over conventional low-LET (e.g., beta-) emissions. Furthermore, fragments may be more effective in controlling tumor growth than complete IgG. However, to the best of
Macromolecular dynamic contrast-enhanced (DCE)-MRI detects reduced vascular permeability in a prostate cancer bone metastasis model following anti-platelet-derived growth factor receptor (PDGFR) therapy, indicating a drop in vascular endothelial growth factor receptor (VEGFR) activation.
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The antivascular function of the platelet-derived growth factor receptor (PDGFR) inhibitor imatinib combined with paclitaxel has been demonstrated by invasive immunohistochemistry. The purpose of this study was to 1) noninvasively monitor the response to anti-PDGFR treatment, and 2) understand the
Exploitation of the size-exclusion effect of reversed-phase high performance liquid chromatography for the direct analysis of diethylene triamine pentaacetic acid in therapeutic monoclonal antibody formulations.
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Monoclonal antibodies (mAb) are being widely studied for the treatment of cancers and other diseases. The mAb is typically in a solution formulation and administered as an intravenous infusion. Ready-to-use solutions are favored for their clinical convenience but they can potentially suffer from a
Simultaneous MRI measurement of blood flow, blood volume, and capillary permeability in mammary tumors using two different contrast agents.
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A technique for the simultaneous measurement of three vascular parameters: blood flow (Frho), blood volume (v(b)), and the capillary permeability-surface area product (PSrho) in breast tumors using dynamic contrast-enhanced magnetic resonance imaging (MRI) is presented. Features of the technique
Investigation of longitudinal vascular changes in control and chemotherapy-treated tumors to serve as therapeutic efficacy predictors.
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The impact of chemotherapy on longitudinal vascular changes taking place during the growth of an animal tumor, R3230 AC adenocarcinoma, was investigated. Two contrast agents of different molecular weights, gadolinium-diethylene-triamine-pentaacetic acid (Gd-DTPA; < 1 kD) and gadomer-17 (35 kD), were
Accuracy of Tumor Perfusion Assessment in Rat C6 Gliomas Model with USPIO.
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Detailed characterization of the permeability and vascular volume of brain tumor vasculature can provide essential insights into tumor physiology. In this study, we evaluated the consistency of measurements in tumor blood volume and examined the feasibility of using ultrasmall superparamagnetic iron
[Magnetic resonance imaging in 38 cases of acoustic tumors].
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The value of magnetic resonance imaging (MRI) in the diagnosis of acoustic tumors was retrospectively assessed in 38 cases. A 0.15 Tesla permanent magnet and a 1.5 Tesla superconducting magnet were employed in 24 and 14 cases, respectively. Gadolinium diethylene triamine pentaacetic acid (Gd-DTPA),
Preoperative imaging of colorectal cancers. Targeting the epithelial membrane antigen with a radiation-labeled monoclonal antibody.
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The epithelial membrane antigen (EMA) is expressed by the majority of colorectal cancers but has not previously been investigated as a target for radiation-labeled monoclonal antibodies (MoAb) in the imaging of patients with colorectal cancer. A rat IgG2a MoAb that recognizes EMA, ICR2, was labeled
Dose individualization can minimize nephrotoxicity due to carboplatin therapy in patients with ovarian cancer.
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Carboplatin (Carbo-Pt), an alkylating agent cleared from the plasma through glomerular filtration, is commonly used for the treatment of ovarian cancer. When administered at high dosage or to patients with reduced renal function, Carbo-Pt may be nephrotoxic. The dose of Carbo-Pt is calculated with
Characterization of N-ethyl-N-nitrosourea-induced malignant and benign breast tumors in rats by using three MR contrast agents.
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A carcinogen (N-ethyl-N-nitrosourea)-induced animal tumor model was established to grow malignant and benign breast tumors. In each tumor the pharmacokinetic characteristics were measured by using three contrast agents, gadolinium-diethylene-triamine-pentaacetic acid (Gd-DTPA; <1 kD), Gadomer-17 (35
Magnetic resonance imaging of tumor necrosis.
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BACKGROUND
The prognostic and predictive value of magnetic resonance (MR) investigations in clinical oncology may be improved by implementing strategies for discriminating between viable and necrotic tissue in tumors. The purpose of this preclinical study was to investigate whether the extent of
Coupling Gd‑DTPA with a bispecific, recombinant protein anti‑EGFR‑iRGD complex improves tumor targeting in MRI.
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Recombinant anti‑epidermal growth factor receptor‑internalizing arginine‑glycine‑aspartic acid (anti‑EGFR single‑domain antibody fused with iRGD peptide) protein efficiently targets the EGFR extracellular domain and integrin αvβ/β5, and shows a high penetration into cells. Thus, this protein may
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