1
|
Kim DH, Choy T, Huang S, Green RM, Omary RA, Larson AC. Microfluidic fabrication of 6-methoxyethylamino numonafide-eluting magnetic microspheres. Acta Biomater 2014; 10:742-50. [PMID: 24161384 DOI: 10.1016/j.actbio.2013.10.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 09/17/2013] [Accepted: 10/16/2013] [Indexed: 11/18/2022]
Abstract
Recently, 6-methoxyethylamino numonafide (MEAN) exhibited potent inhibition of hepatocellular carcinoma (HCC) cell growth and less systemic toxicity than amonafide. MEAN may serve as an ideal candidate for the treatment of HCC; however, liver-directed, selective infusion methods may be critical to maximize the MEAN dose delivered to the targeted tumors. This study describes the microfluidic fabrication of MEAN-eluting ultrasmall superparamagnetic iron oxide (USPIO) nanocluster-containing alginate microspheres (MEAN-magnetic microspheres) intended for selective transcatheter delivery to HCC. The resulting drug delivery platform was mono-disperse, microsphere sizes were readily controlled based on channel flow rates during synthesis procedures, and drug release rates from the microspheres could be readily controlled with the introduction of USPIO nanoclusters. The MR relaxivity properties of the microspheres suggest the feasibility of in vivo imaging after administration, and these microspheres exhibited potent therapeutic effects significantly inhibiting cell growth inducing apoptosis in hepatoma cells.
Collapse
Affiliation(s)
- D-H Kim
- Department of Radiology, Northwestern University, Chicago, IL 60611, USA; Robert H. Lurie Comprehensive Cancer Center, Chicago, IL 60611, USA.
| | - T Choy
- Department of Radiology, Northwestern University, Chicago, IL 60611, USA
| | - S Huang
- Department of Cell and Molecular Biology, Northwestern University Feinberg School of Medicine Chicago, IL 60611, USA
| | - R M Green
- Division of Hepatology, Northwestern University Feinberg School of Medicine Chicago, IL 60611, USA
| | - R A Omary
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - A C Larson
- Department of Radiology, Northwestern University, Chicago, IL 60611, USA; Department of Bioengineering, University of Illinois at Chicago, Chicago, IL 60607, USA; Department of Electrical Engineering and Computer Science, Evanston, IL 60208, USA; Robert H. Lurie Comprehensive Cancer Center, Chicago, IL 60611, USA; Department of Biomedical Engineering, Northwestern University, Chicago, IL 60208, USA; International Institute of Nanotechnology (IIN), Northwestern University, Evanston, IL 60208, USA
| |
Collapse
|
2
|
|
3
|
Kubas GJ, Larson AC, Ryan RR. Reactions of quinuclidine N-oxide and other amine oxides with sulfur dioxide. Structure of quinuclidine sulfur trioxide. J Org Chem 2002. [DOI: 10.1021/jo01336a026] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
4
|
Abstract
Steady-state projection imaging with dynamic echo-train readout (SPIDER) is a multiecho radial k-space trajectory TrueFISP sequence developed for real-time cine imaging of the heart. This new pulse sequence combines the superior SNR and blood-to-myocardium contrast of TrueFISP with the increased scan time efficiency of EPI and undersampled projection reconstruction. SPIDER sequence RF repetition time (TR) was minimized by limiting the echo-train to a length of three while acquiring the first and third echoes asymmetrically. A temporal resolution of 45 ms was achieved with TR/TE1/TE2/TE3 of 3.24/0.6/1.6/2.6 ms and a factor of 2 view sharing scheme. Phantom experiments showed little difference between the weighting of the signals acquired at each of the echo times but did show considerable off-resonance modulation between them. In vivo experiments demonstrated the feasibility of using the SPIDER sequence for real-time imaging in the cardiac short axis orientation.
Collapse
Affiliation(s)
- A C Larson
- Department of Biomedical Engineering, Northwestern University, Chicago, Illinois,, USA.
| | | |
Collapse
|
5
|
Pope CA, Verrier RL, Lovett EG, Larson AC, Raizenne ME, Kanner RE, Schwartz J, Villegas GM, Gold DR, Dockery DW. Heart rate variability associated with particulate air pollution. Am Heart J 1999; 138:890-9. [PMID: 10539820 DOI: 10.1016/s0002-8703(99)70014-1] [Citation(s) in RCA: 427] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Epidemiologic studies have linked fine particulate air pollution with cardiopulmonary mortality, yet underlying biologic mechanisms remain unknown. Changes in heart rate variability (HRV) may reflect changes in cardiac autonomic function and risk of sudden cardiac death. This study evaluated changes in mean heart rate and HRV in human beings associated with changes in exposure to particulate air pollution. METHODS Repeated ambulatory electrocardiographic monitoring was conducted on 7 subjects for a total of 29 person-days before, during, and after episodes of elevated pollution. Mean HR, the standard deviation of normal-to-normal (NN) intervals (SDNN), the standard deviation of the averages of NN intervals in all 5-minute segments of the recording (SDANN), and the square root of the mean of squared differences between adjacent NN intervals (r-MSSD) were calculated for 24-hour and 6-hour time segments. Associations of HRV with particulate pollution levels were evaluated with fixed-effects regression models. RESULTS After controlling for differences across patients, elevated particulate levels were associated with (1) increased mean HR, (2) decreased SDNN, a measure of overall HRV, (3) decreased SDANN, a measure that corresponds to ultralow frequency variability, and (4) increased r-MSSD, a measure that corresponds to high-frequency variability. The associations between HRV and particulates were small but persisted even after controlling for mean HR. CONCLUSIONS This study suggests that changes in cardiac autonomic function reflected by changes in mean HR and HRV may be part of the pathophysiologic mechanisms or pathways linking cardiovascular mortality and particulate air pollution.
Collapse
Affiliation(s)
- C A Pope
- Brigham Young University, Provo, Utah, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Pan S, Geller JM, Gullicks JN, Muus KJ, Larson AC. A comparative analysis of primary care nurse practitioners and physician assistants. Nurse Pract 1997; 22:14, 16-7. [PMID: 9004309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
7
|
Nakotte H, Purwanto A, Robinson RA, Tun Z, Prokes K, Larson AC, Havela L, Sechovsk V, Maletta H, Brück E. Commensurate and incommensurate magnetic structures of UNiGe. Phys Rev B Condens Matter 1996; 54:7201-7209. [PMID: 9984342 DOI: 10.1103/physrevb.54.7201] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
8
|
Kwei GH, Lawson AC, Larson AC, Morosin B, Larson EM, Canfield PC. Structure of Ce2Pt6Ga15: interplanar disorder from the Ce2Ga3 layers. Acta Crystallogr B Struct Sci 1996. [DOI: 10.1107/s0108768196000481] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The structure of the heavy fermion compound Ce2Pt6Ga15 has been determined from neutron powder and X-ray/neutron single-crystal diffraction. Examination of symmetry equivalence among the single-crystal data, as well as the good fit of the powder data to the final structural arrangement, with all the atoms on symmetry sites, suggests that the correct space group is P63/mmc. The structure is unusual in that Ce layers have 1/3 of the Ce atoms replaced by groups of three Ga atoms; distances between atoms in these planes suggest this substitution must occur in a concerted fashion. The refined occupancies lead to a stoichiometry near Ce2Pt6Ga15, consistent with such an arrangement. In addition, single-crystal neutron diffraction data show columns of weak diffuse scattering along the <001> axes, suggesting disorder arising from a lack of registration of successive Ce2Ga3 layers (lying half a cell length or 8.27 Å apart along z) and a 3 × 3 × 1 supercell. This disorder is very likely responsible for the low resistance ratio of approximately unity measured for single-crystal samples.
Collapse
|
9
|
Purwanto A, Sechovsk V, Havela L, Robinson RA, Nakotte H, Larson AC, Prokes K, Brück E. Low-temperature magnetic structure of UNiGe. Phys Rev B Condens Matter 1996; 53:758-765. [PMID: 9983030 DOI: 10.1103/physrevb.53.758] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
10
|
|
11
|
|
12
|
Christoph GG, Larson AC, Eller PG, Purson JD, Zahrt JD, Penneman RA, Rinehart GH. Structure of barium plutonate by neutron powder diffraction. Acta Crystallogr B Struct Sci 1988. [DOI: 10.1107/s0108768188008316] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
13
|
Larson AC, Christoph GG, Eller PG, Purson JD, Zahrt JD, Penneman RA, Rinehart GH. Crystal structure determination of barium plutonate by neutron diffraction. Acta Crystallogr A 1987. [DOI: 10.1107/s0108767387079145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
14
|
Alkire RW, Larson AC, Vergamini PJ, Morosin B. The structures of trithallium tetraselenophosphate and trithallium tetrathioarsenate at 65 K. Acta Crystallogr C 1985. [DOI: 10.1107/s0108270185009167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
15
|
Alkire RW, Larson AC, Vergamini PJ, Schirber JE, Morosin B. High-pressure single-crystal neutron diffraction (to 20 kbar) using a pulsed source: preliminary investigation of Tl3PSe4. J Appl Crystallogr 1985. [DOI: 10.1107/s0021889885010007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
16
|
Alkire RW, Vergamini PJ, Larson AC, Morosin B. Trithallium tetraselenophosphate, Tl3PSe4, and trithallium tetrathioarsenate, Tl3AsS4, by neutron time-of-flight diffraction. Acta Crystallogr C 1984. [DOI: 10.1107/s0108270184008520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
17
|
|
18
|
|
19
|
Larson AC, Vergamini PJ. Single-crystal diffractometer at the Los Alamos pulsed neutron source. Acta Crystallogr A 1981. [DOI: 10.1107/s0108767381091034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
20
|
|
21
|
|
22
|
|
23
|
|
24
|
|
25
|
Cady HH, Larson AC. Pentaerythritol tetranitrate II: its crystal structure and transformation to PETN I; an algorithm for refinement of crystal structures with poor data. ACTA ACUST UNITED AC 1975. [DOI: 10.1107/s0567740875006383] [Citation(s) in RCA: 81] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
26
|
|
27
|
|
28
|
Allen FH, Kennard O, Motherwell WDS, Town WG, Watson DG, Scott TJ, Larson AC. The Cambridge Crystallographic Data Centre, part 3. The unique molecule program. J Appl Crystallogr 1974. [DOI: 10.1107/s0021889874008739] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
29
|
|
30
|
|
31
|
Cromer DT, Larson AC. The use of electron population parameters to distinguish between carbon and nitrogen in cyanide complexes. Acta Crystallogr B Struct Sci 1973. [DOI: 10.1107/s0567740873002293] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
32
|
Ahmed FR, Cruickshank DWJ, Larson AC, Stewart JM. International Union of Crystallography Commission on Crystallographic Computing. Standard tests for crystallographic computer programs. I. Calculations commonly used in crystal-structure analysis. ACTA ACUST UNITED AC 1972. [DOI: 10.1107/s0567739472001056] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
33
|
Cromer DT, Larson AC. The crystal structure of queen substance, 9-keto-trans-2-decenoic acid, the sex pheromone of the honeybee. Acta Crystallogr B Struct Sci 1972. [DOI: 10.1107/s0567740872005655] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
34
|
|
35
|
|
36
|
Williams RJ, Larson AC, Cromer DT. The crystal structure of the mixed valence copper cyanide ethylenediamine complex: aquobis(en)copper(II) di-[catena-di-μ-cyanocuprate(I)], Cu3(en)2(CN)4.H2O. ACTA ACUST UNITED AC 1972. [DOI: 10.1107/s0567740872003310] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
37
|
|
38
|
|
39
|
Kennard O, Wampler DL, Coppola JC, Motherwell WDS, Watson DG, Larson AC. The crystal and molecular structure of cis-trans-cis-cyclodeca-2,4,8-triene-1,6-dione. ACTA ACUST UNITED AC 1971. [DOI: 10.1107/s0567740871003625] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
40
|
Kennard O, Isaacs NW, Coppola JC, Kirby AJ, Warren S, Motherwell WD, Watson DG, Wampler DL, Chenery DH, Larson AC, Kerr KA, Di Sanseverino LR. Three dimensional structure of adenosine triphosphate. Nature 1970; 225:333-6. [PMID: 5410514 DOI: 10.1038/225333a0] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
41
|
|
42
|
|
43
|
|
44
|
|
45
|
|
46
|
Cromer DT, Kay MI, Larson AC. Refinement of the alum structures. II. X-ray and neutron diffraction of NaAl(SO4)2.12H2O, γ alum. ACTA ACUST UNITED AC 1967. [DOI: 10.1107/s0365110x67000313] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
47
|
Cromer DT, Kay MI, Larson AC. Refinement of the alum structures. I. X-ray and neutron diffraction study of CsAl(SO4)2.12H2O, a β alum. ACTA ACUST UNITED AC 1966. [DOI: 10.1107/s0365110x66002950] [Citation(s) in RCA: 40] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
|
48
|
Cowan RD, Larson AC, Liberman D, Mann JB, Waber J. Statistical Approximation for Exchange in Self-Consistent-Field Calculations of the Ground State of Neutral Argon. ACTA ACUST UNITED AC 1966. [DOI: 10.1103/physrev.144.5] [Citation(s) in RCA: 92] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
49
|
|
50
|
|