Abstract

The objective of this project is to study the feasibility of using iodinated liposomes as CT blood pool agents in nonhuman primates. Iopromide-containing liposomes were investigated as blood pool contrast agents for computed tomography (CT) in five normal adult baboons (15-21 kg). Liposomes (mean diameter = 195 nm) were injected intravenously at doses of 300 mg total iodine/kg (46% encapsulation) to each of five anesthetized adult baboons. The animals tolerated the injections well without measurable ECG changes and recovered uneventfully from anesthesia. Sequential helical CT scans from the base of the skull to the symphysis pubis acquired up to 40 min postinjection showed persistent blood pool enhancement. The maximum mean blood pool enhancement level was 106 HU at 1 min. Mean blood pool enhancement was 76 HU, 72 HU, and 67 HU at 10, 20, and 40 min, respectively. Liver and spleen were enhanced by 40 HU and 41 HU, respectively, at 40 min. No significant enhancement was measured in the brain and pancreas. Thus, iopromide-carrying liposomes containing soy phosphatidyl glycerol demonstrate prolonged vascular enhancement and are effective as blood pool CT contrast agents for CT in primates.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Primate Research Center Grants (P51)
Project #
5P51RR000166-37
Application #
6277623
Study Section
Project Start
1998-05-01
Project End
1999-04-30
Budget Start
1997-10-01
Budget End
1998-09-30
Support Year
37
Fiscal Year
1998
Total Cost
Indirect Cost

  Institution

Name
University of Washington
Department
Type
DUNS #
135646524
City
Seattle
State
WA
Country
United States
Zip Code
98195

  Publications

Pham, Amelie; Carrasco, Marisa; Kiorpes, Lynne (2018) Endogenous attention improves perception in amblyopic macaques. J Vis 18:11
Zanos, Stavros; Rembado, Irene; Chen, Daofen et al. (2018) Phase-Locked Stimulation during Cortical Beta Oscillations Produces Bidirectional Synaptic Plasticity in Awake Monkeys. Curr Biol 28:2515-2526.e4
Choi, Hannah; Pasupathy, Anitha; Shea-Brown, Eric (2018) Predictive Coding in Area V4: Dynamic Shape Discrimination under Partial Occlusion. Neural Comput 30:1209-1257
Shushruth, S; Mazurek, Mark; Shadlen, Michael N (2018) Comparison of Decision-Related Signals in Sensory and Motor Preparatory Responses of Neurons in Area LIP. J Neurosci 38:6350-6365
Raghanti, Mary Ann; Edler, Melissa K; Stephenson, Alexa R et al. (2018) A neurochemical hypothesis for the origin of hominids. Proc Natl Acad Sci U S A 115:E1108-E1116
Wool, Lauren E; Crook, Joanna D; Troy, John B et al. (2018) Nonselective Wiring Accounts for Red-Green Opponency in Midget Ganglion Cells of the Primate Retina. J Neurosci 38:1520-1540
Hasegawa, Yu; Curtis, Britni; Yutuc, Vernon et al. (2018) Microbial structure and function in infant and juvenile rhesus macaques are primarily affected by age, not vaccination status. Sci Rep 8:15867
Oleskiw, Timothy D; Nowack, Amy; Pasupathy, Anitha (2018) Joint coding of shape and blur in area V4. Nat Commun 9:466
Eberle, R; Jones-Engel, L (2017) Understanding Primate Herpesviruses. J Emerg Dis Virol 3:
McAdams, Ryan M; McPherson, Ronald J; Kapur, Raj P et al. (2017) Focal Brain Injury Associated with a Model of Severe Hypoxic-Ischemic Encephalopathy in Nonhuman Primates. Dev Neurosci 39:107-123

Showing the most recent 10 out of 320 publications