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1 doses (50 mGy for gamma-rays and 25 mGy for alpha-particles).
2 isms because of the unique properties of the alpha-particle.
3 Auger or conversion electrons or beta(-) or alpha particles.
4 lls by either a single or an exact number of alpha particles.
5 as produced by fibroblasts after exposure to alpha particles.
6 al interactions were seen between X-rays and alpha particles.
7 elated energy resolution values of 2.4% with alpha particles.
8 gamma-rays and 5 MeV He(2+) ions to simulate alpha particles.
9 er, selectively targets bone metastases with alpha particles.
10 ear energy transfer (LET) radiation, such as alpha-particles.
11 ration of 3 new atoms, yielding a total of 4 alpha-particles.
12 i) that lead to the emission of a total of 4 alpha-particles.
13 ighting the higher intrinsic cytotoxicity of alpha-particles.
14 ast cultures exposed to very low fluences of alpha-particles.
15 oid fibroblasts irradiated with 0.3-3 cGy of alpha-particles.
16 es of human cells exposed to low fluences of alpha-particles.
17 in cultures exposed to very low fluences of alpha-particles.
18 cts as an in vivo generator of 4 high-energy alpha-particles.
19 -of-function mutant cells, were sensitive to alpha-particles.
20 one metastases with high-energy, short-range alpha-particles.
21 to the high LET (linear energy transfer) of alpha-particles.
22 optimal biological effectiveness of emitted alpha-particles.
23 ype damage induced by gamma-rays, but not by alpha-particles.
24 ated cells, fibroblasts that were exposed to alpha particles (0.4-19 cGy) had significant increases i
25 =50-80 mum) combined with the short range of alpha-particles (4-5 cell diameters) may result in only
27 opic resolution is achieved for both (241)Am alpha particles (5.49 MeV) and (241)Am gamma-rays (59.5
28 ne population of cells with a lethal dose of alpha-particles, a decreased bystander mutagenesis was u
32 ines (a) chord-based techniques for tracking alpha-particles across bone trabeculae, endosteum, and m
34 ted treatment approach as the short range of alpha-particles allows effective treatment of local lesi
36 ances were measured over this time period by alpha particle and thermal ionization mass spectrometry
37 inciples calculations of processes involving alpha particles and alpha-like nuclei have so far been i
38 ate calculation of the elastic scattering of alpha particles and alpha-like nuclei--nuclei with even
39 current study, AL cells were irradiated with alpha particles and responses of bystander cells were in
40 neighboring cells not directly traversed by alpha particles and that cell-cell communication process
42 nanotube conjugates were labelled with both alpha-particle and gamma-ray emitting isotopes, at high
44 etal bone are 0.81, 0.80, and 0.55 for 6-MeV alpha-particles and are 0.74, 0.72, and 0.43 for 9-MeV a
45 ormation was initiated using radon simulated alpha-particles and cells evaluated as primary, secondar
47 tors were calculated for electrons, photons, alpha-particles, and for (18)F, (90)Y, (99m)Tc, (111)In,
48 neighboring cells not directly traversed by alpha-particles, and that cell-cell communication proces
55 clinical trials emphasize the importance of alpha particles as a new therapeutic modality in patient
57 cell was irradiated with either 1,2,4, or 8 alpha particles at a linear energy transfer of 90 keV/mi
58 e investigated the precipitation kinetics of alpha' particles based on the sink density, using both t
61 rease the effectiveness corresponding to the alpha particles by more than 100% and also, potentially
62 rved in cell cultures exposed to fluences of alpha-particles by which only a very small fraction of t
64 outcomes, increasing evidence indicates that alpha particles can cause alterations in DNA in the abse
65 densely ionizing alpha-particles (mean of 1 alpha-particle/cell) and analyzed the chromosome aberrat
67 hondrial dynamics and functions triggered by alpha particle damage to the mitochondria in human small
68 served, but resistance to clustered, complex alpha-particle damage was substantially lower than to eq
70 a-particle-emitting radionuclides with 4 net alpha-particle decays that can be used therapeutically.
71 h and 168 h post-injection for quantitative alpha -particle digital autoradiography and hematoxylin
72 ds of 130-microm diameter yielded an average alpha-particle dose of 3.7 Gy to the spheroids, resultin
74 The induction of cx43 was observed by mean alpha-particle doses as low as 0.16 cGy, and also in cel
75 tion of radiation-induced recovery caused by alpha-particles during alpha-decay events has not been p
77 20% of randomly selected A(L) cells with 20 alpha particles each results in a mutant fraction that i
84 h ionization-density radiations, such as the alpha-particles emitted by radon gas or the heavy-ions u
85 DTCs both within and beyond the range of the alpha-particles emitted from (223)Ra in bone for both MC
86 g of cellular survival following exposure to alpha-particles emitted from radium-223 ((223)Ra) using
87 tibody 81C6 labeled with the 7.2-h-half-life alpha-particle emitter (211)At might be a valuable endor
88 e rat variant of HER-2/neu, labeled with the alpha-particle emitter (213)Bi to treat widespread metas
90 (89)Zr, and (124)I; beta-emitter (131)I; and alpha-particle emitter (225)Ac for potential use in CLI.
91 s study, we investigated the efficacy of the alpha-particle emitter (225)Ac, parent of (213)Bi, in a
92 escalation study of HuM195, labeled with the alpha-particle emitter 213Bi (half-life = 45.6 min), wer
93 i-PSMA antibody, J591, radiolabeled with the alpha-particle emitter 213Bi (T(1/2), 45.6 min.) has bee
98 would be the case for a low-energy beta- or alpha-particle emitter localized on the bone surfaces.
100 of the field that are pertinent to targeted alpha-particle emitter therapy and to provide guidance a
101 ive targeting of hematopoietic cells with an alpha-particle emitter, bismuth-213 ((213)Bi)-labeled an
102 unotherapy using (225)Ac, a highly cytotoxic alpha-particle emitter, has potential for treating advan
103 tudy shows that patient imaging of 213Bi, an alpha-particle emitter, labeled to HuM195 is possible an
105 Targeted radiopharmaceutical therapy with alpha-particle emitters (alphaRPT) is advantageous in ca
107 al of PSMA-targeting liposomes encapsulating alpha-particle emitters for selective antivascular alpha
111 lication of radionuclides and, specifically, alpha-particle emitters in nuclear medicine has brought
112 guide the clinical incorporation of targeted alpha-particle emitters in the treatment of several canc
121 etriamine pentaacetic acid (DTPA)-HuM195, an alpha particle-emitting anti-CD33 antibody construct for
122 oride ([(223)Ra]RaCl2) is the first approved alpha particle-emitting therapy and is indicated for tre
123 SPECT is possible but challenging for alpha (alpha)-particle-emitting radiopharmaceutical therapy (al
124 to analyze the therapeutic effectiveness of alpha-particle-emitting (211)At and (213)Bi conjugated t
127 e), (203)Pb (a surrogate for the therapeutic alpha-particle-emitting (212)Pb), and theranostic (177)L
129 re, we leveraged that scaffold to synthesize alpha-particle-emitting analogs of L1, (213)Bi-L1 and (2
130 at specific ablation of BM-derived EPCs with alpha-particle-emitting anti-VE-cadherin antibody marked
133 the therapeutic efficacy and limitations of alpha-particle-emitting radiolabeled compounds by means
135 DOTATATE can chelate the clinically relevant alpha-particle-emitting radionuclide (225)Ac, the labeli
137 (TRT) using targeting moieties labeled with alpha-particle-emitting radionuclides (alpha-TRT) is an
140 ha-therapies selectively deliver high-energy alpha-particle-emitting radionuclides to tumor-associate
143 ng class of targeted cancer therapy in which alpha-particle-emitting radionuclides, such as (227)Th,
144 ting the use of beta-particle, electron, and alpha-particle-emitting radiopharmaceuticals is reviewed
145 en the production of high activity levels of alpha-particle-emitting radiotherapeutics is required.
146 ty, toxicity and chemical characteristics of alpha-particle-emitting, 213Bi and 212Bi radiometal conj
148 (225)Ac, (213)Bi, (211)At, and (223)Ra, the alpha-particle--emitting radionuclides of interest in ra
149 rt range and high local energy deposition of alpha particles enable precise radiation delivery and ef
150 to this approach because the short range of alpha-particles enables localized irradiation of tumor c
152 actinium-225 ((225)Ac) in vivo generator of alpha particles exploits the extreme, selective cytotoxi
153 ent study that gamma-irradiation, as well as alpha-particle exposure, dramatically increases the susc
154 P1 foci yields were significantly reduced in alpha particle exposures compared to X-rays, but these f
155 an cells are exposed to very low fluences of alpha particles, fluences whereby only 1-3% of the cell
156 T) may have the same therapeutic efficacy as alpha-particles for oncologic small disease, with lower
157 that in the presence of a low sink density, alpha' particles form and grow faster due to the existen
160 carbons, (1.3 +/- 0.7) x 10(8) sr(-1) J(-1) alpha particles from laser-driven proton-boron fusion re
163 esponse for protons, carbon and helium ions (alpha particles) from 0.1 to above 10 MeV and measuremen
164 s independent of radiation quality, but that alpha particles generated substantially more sublethal d
166 evaluates targeted liposomes loaded with the alpha-particle generator (225)Ac to selectively kill pro
167 e of [(212)Pb]Pb-DOTAM-GRPR1, comprising the alpha-particle generator, (212)Pb, combined with a GRPR-
168 rtial confinement fusion that determines the alpha-particle heating expected to trigger a burn wave i
170 null functions are significantly reduced for alpha particles if >/=3 attributes are measured or for b
173 r than for a Poisson-distributed mean of one alpha particle, implying that cells traversed by multipl
175 a significant contribution of the secondary alpha particles in total effectiveness in proton therapy
176 We have found that a relatively low dose of alpha particles indeed results in the generation of extr
180 d to the in vivo condition in the context of alpha-particle-induced carcinogenesis in the respiratory
181 ructure" of each complex exchange we predict alpha-particle-induced damage to be repaired at specific
182 ults indicate that the initiating target for alpha-particle-induced genetic changes can be larger tha
183 novel solid tumor management strategy using alpha-particle interstitial brachytherapy, may address t
185 idemiologic data on lifelong detriment after alpha-particle irradiation and its dosimetry allowed cal
186 more robust to damage created by high-energy alpha-particle irradiation as compared to monolayer grap
187 fertilization (hpf) subjected to a low-dose alpha-particle irradiation can release a stress signal i
188 electronic excitations induced by proton and alpha-particle irradiation cause ionization of DNA, resu
189 tely measures cancer cellular sensitivity to alpha-particle irradiation could guide and accelerate cl
191 Methods: Baseline data for risk estimates of alpha-particle irradiation were collected from published
192 ompasses three populations: those exposed to alpha-particle irradiation, those with a cancer diagnosi
193 eatment procedure, not clearly linked to the alpha-particle irradiation, with no observed hematologic
194 e findings suggest that internally delivered alpha-particle irradiation-induced loss of tubular epith
197 f cancer cell survival following exposure to alpha-particle irradiation.See related commentary by Sgo
198 ous-to-crystalline transition process during alpha-particle irradiations using in situ transmission e
201 rmal human lung fibroblasts to a low dose of alpha particles like those emitted by radon/radon progen
207 oblasts, we investigated the hypothesis that alpha particles may induce DNA damage via the generation
208 tigated the hypothesis that densely ionizing alpha particles may induce the intracellular generation
209 ks (involving cellular traversal by multiple alpha particles) may overestimate low-level (involving o
210 e and HPRT mutations by very low fluences of alpha particles (mean doses 0.17-0.5 cGy) was measured.
211 ocytes in vitro with 0.5 Gy densely ionizing alpha-particles (mean of 1 alpha-particle/cell) and anal
212 gh activity levels, which can be hindered by alpha-particle-mediated radiolytic effects on labeling c
213 encies of cultured cell studies, we examined alpha-particle microbeam irradiation-induced bystander e
215 -nuclei therapy (with argon, carbon, helium [alpha particles], neon, nitrogen, and silicon) have been
219 cts of exposure to high and very low fluence alpha-particles on the G1 checkpoint were investigated i
220 effect may contribute to the prompt loss of alpha particles or to crashes and disruptions that are o
221 pRb, p34cdc2, and cyclin B1) was observed in alpha-particle or gamma-irradiated human fibroblasts.
222 of either high linear energy transfer (LET) alpha-particles or low-LET gamma-rays leads to stimulati
224 c response of DNA to irradiating protons and alpha-particles, our first-principles dynamics simulatio
227 E was deemed the superior agent for targeted alpha-particle peptide receptor radionuclide therapy.
228 uent mammalian cell population with a single alpha particle per cell results in a mutant yield simila
229 the short path lengths and high energies of alpha-particles produce optimal cytotoxicity at small ta
231 due to secondary reactions induced by alpha (alpha) particles produced in the primary reactions.
232 eted radiopharmaceutical therapy (TRT) using alpha-particle radiation is a promising approach for tre
233 liminating microscopic residual disease with alpha-particle radiation is theoretically appealing.
235 mbryo fibroblasts exposed to either gamma or alpha-particle radiation revealed a total lack of G1 arr
236 mode ESI have been subjected to polonium-210 alpha-particle radiation to reduce the average charge st
241 a significant contribution to the yield from alpha-particle self-heating and evidence for the 'bootst
243 is by exposing cells to very low fluences of alpha-particles, similar to those emitted by radon gas,
245 ilable alpha-particle spectrometer and 210Po alpha-particle source were used to determine the mass of
249 vels of telomerase activity were detected in alpha-particle survivors while robust telomerase activit
250 horter range and more potent cytotoxicity of alpha-particles than of beta-particles, (211)At-labeled
252 -induced DNA damage by energetic protons and alpha-particles, the chemistry and physics of which are
253 18 h coculture with cells irradiated with 20 alpha-particles, the fraction of bystander cells with mu
254 ns and neutrons; these later combine to form alpha particles, then (12)C nuclei via the triple-alpha
256 options and poor patient outcomes, targeted alpha-particle therapy (TAT) represents a promising deve
259 rformed a phase I trial with intraperitoneal alpha-particle therapy in epithelial ovarian cancer usin
260 afety, feasibility, and activity of targeted alpha-particle therapy in the treatment of small-volume
261 a-particle therapy, suggesting that targeted alpha-particle therapy may offer a promising treatment o
265 m) of alpha-emitting radioisotopes, targeted alpha-particle therapy offers the potential for more spe
269 mately, randomized trials comparing targeted alpha-particle therapy with standard approaches will be
270 ragments (sdAbs) are attractive for targeted alpha-particle therapy, particularly with (211)At, becau
275 targeted radiotherapies can deliver multiple alpha particles to a receptor site dramatically amplifyi
277 s been constructed that selectively delivers alpha-particles to prostate cancer cells for potent and
278 y (TAT) delivers high-linear-transfer-energy alpha-particles to tumors with the potential to generate
279 lones radioresistant to either gamma-rays or alpha-particles to understand possible mechanisms in rad
283 formation is a consequence of direct nuclear alpha-particle traversal and show that the likely produc
286 A technique to assess the effects of single alpha particles uses a charged-particle microbeam, which
288 , the measured oncogenicity from exactly one alpha particle was significantly lower than for a Poisso
290 oses as low as 2-mGy gamma-rays and 0.29-mGy alpha-particles were sufficient to produce an observable
291 icles and are 0.74, 0.72, and 0.43 for 9-MeV alpha-particles, where each is evaluated at ICRP referen
292 s are very rarely traversed by more than one alpha particle, whereas at higher radon levels-at which
293 loits the extreme, selective cytotoxicity of alpha particles, while providing a feasible half-life to
294 46 min) radionuclide that emits high energy alpha-particles with an effective range of 0.07-0.10 mm
295 uniform microdistributions of the delivered alpha-particles within established solid tumors improve
296 ncogenic transforming effects of exactly one alpha particle without the confounding effects of multip
297 toma with cytotoxic short-range, high-energy alpha-particles would be an effective therapeutic approa
300 "Jake_M," the first rock analyzed by the Alpha Particle X-ray Spectrometer instrument on the Curi