Optoacoustic tomography in preclinical research: in vivo distribution of highly purified PEG-coated gold nanorods

2011 ◽  
Author(s):  
Richard Su ◽  
Anton Liopo ◽  
Sergey A. Ermilov ◽  
Hans-Peter Brecht ◽  
Kirill Larin ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Preclinical Research ◽  
Optoacoustic Tomography ◽  
In Vivo Distribution

Optoacoustic tomography in preclinical research: in vivo distribution of highly purified PEG-coated gold nanorods

2011 ◽  
Author(s):  
Richard Su ◽  
Anton Liopo ◽  
Hans-Peter Brecht ◽  
Sergey Ermilov ◽  
Kirill Larin ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Preclinical Research ◽  
Optoacoustic Tomography ◽  
In Vivo Distribution

siRNA liposome-gold nanorod vectors for multispectral optoacoustic tomography theranostics

Nanoscale ◽  
2014 ◽  
Vol 6 (22) ◽  
pp. 13451-13456 ◽  
Author(s):  
Adrian Taruttis ◽  
Neus Lozano ◽  
Antonio Nunes ◽  
Dhifaf A. Jasim ◽  
Nicolas Beziere ◽  
...  
Keyword(s):  
Gene Silencing ◽  
Gold Nanorods ◽  
Gold Nanorod ◽  
Vector System ◽  
Optoacoustic Tomography

This study describes the simultaneous in vivo optoacousic imaging and siRNA-mediated gene silencing capabilities of a model theranostic vector system between liposomes and gold nanorods.

99mTc-Sn-Pyrophosphate Complexes, an Investigation of its Possible Structures

1974 ◽  
Vol 13 (03) ◽  
pp. 252-257 ◽  
Author(s):  
K. Rörvik - Schümichen ◽  
G. Hoffmann ◽  
C. Schümichen
Keyword(s):  
In Vivo Distribution ◽  
Low Concentrations ◽  
Distribution Studies

SummaryAt least two different 99mTc-Sn-pyrophosphate complexes are formed, as it is shown by comparative in vivo distribution studies: A 2 : 2 Sn : pyrophosphate complex is predominant at higher concentrations. Only this complex shows bone seeking properties. A 2 : 1 Sn : pyrophosphate complex exists only at low concentrations. This complex shows no deposition in bone but in the kidneys. Which complex is predominant depends on the pyrophosphate concentration in the equilibrium. Both complexes are rapidly excreted by the kidneys.

A Comparative Study of the in vivo Distribution of 32P-Polyphosphates and 32P-Orthophosphate

1972 ◽  
Vol 11 (01) ◽  
pp. 70-78
Author(s):  
Esther Miller ◽  
Leopoldo Anghileri
Keyword(s):  
Radiation Dose ◽  
Comparative Study ◽  
Soft Tissues ◽  
Tumor Bearing ◽  
In Vivo Distribution ◽  
The Cross ◽  
Total Body

SummaryThe distribution of 32P-polyphosphates (lineal and cross-linked) and 32Porthophosphate in normal and tumor bearing animals has been studied. Differences between the cross-linked and the lineal form are related to a different degree of susceptibility to the hydrolysis by the phosphatases. In contrast to orthophosphate, the polyphosphates showed a lower accumulation in soft tissues which gives an advantageous reduction of the total body radiation dose.

57Co-Hematoporphyrin Accumulation by Experimental Tumors

1976 ◽  
Vol 15 (04) ◽  
pp. 183-184 ◽  
Author(s):  
L. J. Anghileri ◽  
M. Heidbreder ◽  
R. Mathes
Keyword(s):  
Experimental Tumors ◽  
Potential Value ◽  
Tumor Bearing ◽  
In Vivo Distribution

SummaryThe in vivo distribution of 57Co-hematoporphyrin in adenocarcinoma BW10232-bearing mice has been studied. Tumor-bearing and normal animals exhibit similar patterns of radioactivity accumulation. Twenty-four hours after the administration of the radiocompound the ratios tumor to blood and tumor to muscle indicate a potential value of this radioactive porphyrin for the detection of some types of tumor.

Delivery Efficacy Differences of Intravenous and Intraperitoneal Injection of Exosomes: Perspectives from Tracking Dye Labeled and MiRNA Encapsulated Exosomes

2020 ◽  
Vol 17 (3) ◽  
pp. 186-194 ◽  
Author(s):  
Xueying Zhou ◽  
Zhelong Li ◽  
Wenqi Sun ◽  
Guodong Yang ◽  
Changyang Xing ◽  
...  
Keyword(s):  
Intraperitoneal Injection ◽  
Drug Delivery Vehicles ◽  
C Elegans ◽  
Administration Routes ◽  
In Vivo Distribution ◽  
Obesity Therapy ◽  
Delivery Vehicles ◽  
Visceral Adipose ◽  
Mirna Abundance

Background: Exosomes are cell-derived nanovesicles that play vital roles in intercellular communication. Recently, exosomes are recognized as promising drug delivery vehicles. Up till now, how the in vivo distribution of exosomes is affected by different administration routes has not been fully understood. Methods: In the present study, in vivo distribution of exosomes following intravenous and intraperitoneal injection approaches was systemically analyzed by tracking the fluorescence-labeled exosomes and qPCR analysis of C. elegans specific miRNA abundance delivered by exosomes in different organs. Results: The results showed that exosomes administered through tail vein were mostly taken up by the liver, spleen and lungs while exosomes injected intraperitoneally were more dispersedly distributed. Besides the liver, spleen, and lungs, intraperitoneal injection effectively delivered exosomes into the visceral adipose tissue, making it a promising strategy for obesity therapy. Moreover, the results from fluorescence tracking and qPCR were slightly different, which could be explained by systemic errors. Conclusion: Together, our study reveals that different administration routes cause a significant differential in vivo distribution of exosomes, suggesting that optimization of the delivery route is prerequisite to obtain rational delivery efficiency in detailed organs.

[18F]-florbetaben PET/CT Imaging in the Alzheimer’s Disease Mouse Model APPswe/PS1dE9

2018 ◽  
Vol 16 (1) ◽  
pp. 49-55 ◽  
Author(s):  
J. Stenzel ◽  
C. Rühlmann ◽  
T. Lindner ◽  
S. Polei ◽  
S. Teipel ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Mouse Model ◽  
New Drugs ◽  
Imaging Data ◽  
Wild Type ◽  
Preclinical Research ◽  
Standardized Uptake Values ◽  
Pet Ct

Background: Positron-emission-tomography (PET) using 18F labeled florbetaben allows noninvasive in vivo-assessment of amyloid-beta (Aβ), a pathological hallmark of Alzheimer’s disease (AD). In preclinical research, [<sup>18</sup>F]-florbetaben-PET has already been used to test the amyloid-lowering potential of new drugs, both in humans and in transgenic models of cerebral amyloidosis. The aim of this study was to characterize the spatial pattern of cerebral uptake of [<sup>18</sup>F]-florbetaben in the APPswe/ PS1dE9 mouse model of AD in comparison to histologically determined number and size of cerebral Aβ plaques. Methods: Both, APPswe/PS1dE9 and wild type mice at an age of 12 months were investigated by smallanimal PET/CT after intravenous injection of [<sup>18</sup>F]-florbetaben. High-resolution magnetic resonance imaging data were used for quantification of the PET data by volume of interest analysis. The standardized uptake values (SUVs) of [<sup>18</sup>F]-florbetaben in vivo as well as post mortem cerebral Aβ plaque load in cortex, hippocampus and cerebellum were analyzed. Results: Visual inspection and SUVs revealed an increased cerebral uptake of [<sup>18</sup>F]-florbetaben in APPswe/ PS1dE9 mice compared with wild type mice especially in the cortex, the hippocampus and the cerebellum. However, SUV ratios (SUVRs) relative to cerebellum revealed only significant differences in the hippocampus between the APPswe/PS1dE9 and wild type mice but not in cortex; this differential effect may reflect the lower plaque area in the cortex than in the hippocampus as found in the histological analysis. Conclusion: The findings suggest that histopathological characteristics of Aβ plaque size and spatial distribution can be depicted in vivo using [<sup>18</sup>F]-florbetaben in the APPswe/PS1dE9 mouse model.

scholarly journals Correction to Patchy Amphiphilic Dendrimers Bind Adenovirus and Control Its Host Interactions and in Vivo Distribution

ACS Nano ◽  
2021 ◽  
Author(s):  
Yuzhou Wu ◽  
Longjie Li ◽  
Larissa Frank ◽  
Jessica Wagner ◽  
Patrizia Andreozzi ◽  
...  
Keyword(s):  
Host Interactions ◽  
In Vivo Distribution ◽  
Amphiphilic Dendrimers ◽  
And Control

The Dynamic in vivo Distribution of Bone Marrow-Derived Mesenchymal Stem Cells after Infusion

2001 ◽  
Vol 169 (1) ◽  
pp. 12-20 ◽  
Author(s):  
Jizong Gao ◽  
James E. Dennis ◽  
Raymond F. Muzic ◽  
Magnus Lundberg ◽  
Arnold I. Caplan
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
In Vivo Distribution
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