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Hida T, Tai K, Tokuhara N, Ishibashi A, Kikuchi K, Hibi S, Yoshimura H, Nagai M, Yamauchi T, Kobayashi S. Existence of retinoic acid-receptor-independent retinoid X-receptor-dependent pathway in myeloid cell function. JAPANESE JOURNAL OF PHARMACOLOGY 2001; 85:60-9. [PMID: 11243576 DOI: 10.1254/jjp.85.60] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We previously reported that ER-27191 (4-[4,5,7,8,9,10-hexahydro-7,7,10,10-tetramethyl-1-(3-pyridylmethyl)anthra[1,2-b]pyrrol-3-yl]benzoic acid) is a potent antagonist of retinoic acid receptor (RAR), and ER-35795 ((2E,4E,6E)-7-[1-(1-methylethyl)-8-chloro-1,2,3,4-tetrahydroquinolin-6-yl]-6-fluoro-3-methyl-2,4,6-nonatrienoic acid) is a novel retinoid X receptor (RXR)-specific agonist. By using these compounds, we investigated whether distinct RAR-dependent and RXR-dependent pathways operate to mediate the diverse activities of retinoids, particularly, the effects of the RXR pathway on cellular function. ER-27191 completely antagonized HL60 cell differentiation induced by all-trans-retinoic acid (atRA). However, the differentiation induced by the ER-35795 was not antagonized at all by the RAR antagonist, but was inhibited by an RXR homodimer antagonist (LGD100754, (2E,4E,6Z)-7-(3-n-propoxy-5,6,7,8-tetrahydro-5,5,8,8-tetramethylnaphthalen-2-yl)-3-methylocta-2,4,6-trienoic acid). Its agonistic action on RXR/RAR heterodimer, on the other hand, was neutralized by the RAR antagonist. During HL60 cell differentiation, atRA induced RARbeta mRNA, while the RXR had no effect. Interestingly, a functional RXR-pathway was also seen in lipopolysaccharide-induced inhibition of mouse splenocyte proliferation. These results strongly suggest the existence of a pharmacological RXR-dependent pathway that is activated by a ligand that can bind to RXR.
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Nomura M, Saeki S, Ogawa S, Tai K, Kajiwara K. [Preoperative questionnaire survey about anxiety of patients for scheduled operation]. MASUI. THE JAPANESE JOURNAL OF ANESTHESIOLOGY 2000; 49:913-9. [PMID: 10998892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Preoperative patients have various kinds of anxiety. However we do not know much about their psychological burden. Therefore, we investigated types of their anxiety with questionnaires prior to operation and analyzed them according to their anesthetic method, type of surgery and age. Concerning anesthetic methods, patients' anxiety varied depending on their histories of anesthesia, anesthetic method previously received and age. Concerning the type of surgery, patients scheduled to undergo abdominal and cardiac surgery had more intense anxiety. Patients scheduled for gynecological surgery were anxious about the accident which might be induced by anesthesia. A large number of patients scheduled for orthopedic surgery were anxious about postoperative pain. Concerning patients' age, patients whose ages ranged from 10s to 50s were anxious about pain. While, in patients over 60s, their anxiety was focussed on giving trouble to their surrounding people. Patients whose age was 10 to 19 had anxiety about their anesthetic method. Anesthesiologists should recognize that preoperative patients have various kinds of anxiety. It is important for us to examine the patients appropriately according to their psychological and physical condition.
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Yoshimura H, Kikuchi K, Hibi S, Tagami K, Satoh T, Yamauchi T, Ishibahi A, Tai K, Hida T, Tokuhara N, Nagai M. Discovery of novel and potent retinoic acid receptor alpha agonists: syntheses and evaluation of benzofuranyl-pyrrole and benzothiophenyl-pyrrole derivatives. J Med Chem 2000; 43:2929-37. [PMID: 10956201 DOI: 10.1021/jm000098s] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the course of our studies on retinoic acid receptor (RAR) agonists, we have designed and synthesized a series of benzofuran and benzothiophene derivatives. Some of these compounds (1a,b,e,f,j) markedly inhibited LPS-induced B-lymphocyte proliferation and exerted RARalpha selectivity. One of them, 4-[5-(4,7-dimethylbenzofuran-2-yl)pyrrol-2-yl]benzoic acid (1b), when orally administered significantly inhibited mouse antibody production and delayed type hypersensitivity (DTH) responses from a dose of 0.1 mg/kg.
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Kikuchi K, Hibi S, Yoshimura H, Tai K, Hida T, Tokuhara N, Yamauchi T, Nagai M. Novel retinoic acid receptor alpha agonists: syntheses and evaluation of pyrazole derivatives. Bioorg Med Chem Lett 2000; 10:619-22. [PMID: 10762038 DOI: 10.1016/s0960-894x(00)00066-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We have designed and synthesized a series of pyrazole derivatives as candidate retinoic acid receptor (RAR) agonists. One of them, 4-[5-(1, 5-diisopropyl-1H-3-pyrazolyl)-1H-2-pyrrolyl]benzoic acid (11b), which possesses a 2,5-disubstituted pyrrole moiety, showed selective transactivation activity for the RAR alpha receptor, and had highly potent cell-differentiating activity on HL-60 cells.
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Hibi S, Tagami K, Kikuchi K, Yoshimura H, Tai K, Hida T, Tokuhara N, Yamauchi T, Nagai M. Syntheses and evaluation of naphthalenyl- and chromenyl-pyrrolyl-benzoic acids as potent and selective retinoic acid receptor alpha agonists. Bioorg Med Chem Lett 2000; 10:623-5. [PMID: 10762039 DOI: 10.1016/s0960-894x(00)00067-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Synthesis and structure activity relationships (SAR) of RAR alpha-selective agonists are discussed. 4-[5-(5,8-Dimethyl-2H-3-chromenyl)-1H-2-pyrrolyl]benzoic acid (12a), which possesses a flat structural moiety and an oxygen atom at the hydrophobic part, showed highly selective transactivation activity at the RAR alpha receptor.
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Kikuchi K, Hibi S, Yoshimura H, Tokuhara N, Tai K, Hida T, Yamauchi T, Nagai M. Syntheses and structure-activity relationships of 5,6,7, 8-tetrahydro-5,5,8,8-tetramethyl-2-quinoxaline derivatives with retinoic acid receptor alpha agonistic activity. J Med Chem 2000; 43:409-19. [PMID: 10669568 DOI: 10.1021/jm990063w] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the course of our studies on retinoic acid receptor (RAR) agonists, we have designed and synthesized a series of quinoxaline derivatives. One of them, 4-[5-(5,6,7,8-tetrahydro-5,5,8, 8-tetramethyl-2-quinoxalinyl)-1H-2-pyrrolyl]benzoic acid (3a), which possesses a 2,5-disubstituted pyrrole moiety, showed selectivity for the RARalpha receptor and exerted highly potent cell-differentiating activity on HL-60 cells.
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Simpson TB, Liu JM, Huang KF, Tai K. Nonlinear dynamics induced by external optical injection in semiconductor lasers. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/1355-5111/9/5/009] [Citation(s) in RCA: 216] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kilunga Kubata B, Eguchi N, Urade Y, Yamashita K, Mitamura T, Tai K, Hayaishi O, Horii T. Plasmodium falciparum produces prostaglandins that are pyrogenic, somnogenic, and immunosuppressive substances in humans. J Exp Med 1998; 188:1197-202. [PMID: 9743538 PMCID: PMC2212549 DOI: 10.1084/jem.188.6.1197] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Plasmodium falciparum causes the most severe form of human malaria, which kills approximately 1.5-2.7 million people every year, but the molecular mechanisms underlying the clinical symptoms and the host-parasite interaction remain unclear. We show here that P. falciparum produces prostaglandins (PGs) D2, E2, and F2alpha. After incubation with 1 mM arachidonic acid (AA), cell homogenates of P. falciparum produced PGs as determined by enzyme immunoassay and gas chromatography-selected ion monitoring. PG production in the parasite homogenate was not affected by the nonsteroidal antiinflammatory drugs aspirin and indomethacin, and was partially heat resistant, whereas PG biosynthesis by mammalian cyclooxygenase was completely inhibited by these chemicals and by heat treatment. Addition of AA to the parasite cell culture markedly increased an ability of the parasite cell homogenate to produce PGs and of parasitized red blood cells to accumulate PGs in the culture medium. PGD2 and PGE2 accumulated in the culture medium at the stages of trophozoites and schizonts more actively than at the ring stage. These findings are the first evidence of the direct involvement of a malaria parasite in the generation of substances that are pyrogenic and injurious to the host defenses. We will discuss a possible contribution of the parasite-produced PGs to pathogenesis and host-parasite interaction of P. falciparum.
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Hibi S, Kikuchi K, Yoshimura H, Nagai M, Tai K, Hida T. Syntheses and structure-activity relationships of novel retinoid X receptor agonists. J Med Chem 1998; 41:3245-52. [PMID: 9703470 DOI: 10.1021/jm980058c] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
As part of our studies to develop novel retinoids with increased affinity and selectivity for the retinoid X receptor (RXR) subfamily, we have designed and synthesized a series of (E,E,E)-7-(1,2,3, 4-tetrahydroquinolin-6-yl)-7-alkyl-6-fluoro-3-methylhepta-2, 4, 6-trienoic acid derivatives. These tetrahydroquinolines, generated by introducing a polar N atom into the hydrophobic part of the retinoid skeleton, showed high binding affinity to RXRs. Addition of fluorine at the 6-position of the 2,4,6-trienoic acid moiety afforded compounds which elicit potent and selective transactivation of the RXRs. Compound 14b (ER-35794), which possesses an ethyl substituent at the 7-position and fluorine at the 6-position of the triene moiety, is one of the most potent and selective RXR agonists reported to date.
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Tai K, Nakatogawa T, Hisada T, Noguchi H. Analytical study on dynamic buckling of reactor containment vessel. NUCLEAR ENGINEERING AND DESIGN 1997. [DOI: 10.1016/s0029-5493(97)00144-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jahnke F, Kira M, Koch SW, Khitrova G, Lindmark EK, Nelson TR, Wick DV, Berger JD, Lyngnes O, Gibbs HM, Tai K. Excitonic Nonlinearities of Semiconductor Microcavities in the Nonperturbative Regime. PHYSICAL REVIEW LETTERS 1996; 77:5257-5260. [PMID: 10062755 DOI: 10.1103/physrevlett.77.5257] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Sugiyama T, Suzue K, Okamoto M, Inselburg J, Tai K, Horii T. Production of recombinant SERA proteins of Plasmodium falciparum in Escherichia coli by using synthetic genes. Vaccine 1996; 14:1069-76. [PMID: 8879104 DOI: 10.1016/0264-410x(95)00238-v] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We expressed two regions of the serine repeat antigen (SERA) protein of Plasmodium falciparum in Escherichia coli by synthesizing the genes with a changed codon usage. One of the synthetic gene sequences encodes amino acid residues 17-382 (SE47') and the other encodes amino acid residues 586-802 (SE50A). The products produced by the synthetic gene sequences in E. coli accounted for 15-30% of the total bacterial protein. Antisera against both the purified gene products prepared in rats inhibited malaria parasite growth in vitro. The anti-SE47' serum was significantly more inhibitory than the anti-SE50A serum. The described methods provide a large scale preparation of recombinant antigens for improving and producing malaria vaccine.
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Simpson TB, Liu JM, Huang KF, Tai K, Clayton CM, Gavrielides A, Kovanis V. Cavity enhancement of resonant frequencies in semiconductor lasers subject to optical injection. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 52:R4348-R4351. [PMID: 9912856 DOI: 10.1103/physreva.52.r4348] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Suzuki T, Shiraishi H, Katsumata N, Saitoh H, Tai K, Ogawa S, Suzuki H. [The effects of diltiazem on neuromuscular transmission]. MASUI. THE JAPANESE JOURNAL OF ANESTHESIOLOGY 1994; 43:1004-7. [PMID: 7933465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The effects of intravenous diltiazem (0.5 and 1.0 mg.kg-1) on muscle compound action potential (CAP) elicited from gastrocnemius muscle by sciatic nerve stimulation in cats were investigated. Analysis was performed on the amplitude of CAP, recovery curve (RC) and train-of-four ratio (TOFR). There was no response in any parameter after administering 0.5 mg.kg-1. On the other hand, diltiazem 1.0 mg.kg-1 produced significant depression only in the amplitude of CAP, but no change was observed in both RC and TOFR. It is concluded that approximately ten times the therapeutic dose of diltiazem is necessary to modify the neuromuscular transmission.
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Tomeno I, Machi T, Tai K, Koshizuka N, Kambe S, Hayashi A, Ueda Y, Yasuoka H. NMR study of spin dynamics at planar oxygen and copper sites in YBa2Cu4O8. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:15327-15334. [PMID: 10010647 DOI: 10.1103/physrevb.49.15327] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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41
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Yaguchi H, Tai K, Takemasa K, Onabe K, Ito R, Shiraki Y. Characterization of Ge/SiGe strained-barrier quantum-well structures using photoreflectance spectroscopy. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:7394-7399. [PMID: 10009477 DOI: 10.1103/physrevb.49.7394] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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42
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Matsuura I, Kimura E, Tai K, Yazawa M. Mutagenesis of the fourth calcium-binding domain of yeast calmodulin. J Biol Chem 1993; 268:13267-73. [PMID: 8390460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The fourth calcium-binding domain (domain IV) of the yeast (Saccharomyces cerevisiae) calmodulin is unable to bind Ca2+ (Matsuura, I., Ishihara, K., Nakai, Y., Yazawa, M., Toda, H., and Yagi, K. (1991) J. Biochem. (Tokyo) 109, 190-197). The functional significance of Ca2+ binding to domain IV was investigated by site-directed mutagenesis or recombinant DNA techniques. A recognition site for the restriction enzyme ClaI was introduced at the homologous position of Ile130 in the nucleotide sequence of chicken and yeast calmodulin cDNA, and chimeric proteins of the yeast and the vertebrate calmodulin were prepared. One of the resulting mutants named C4Y consisted of Ala1-Ile130 of chicken calmodulin and Asp131-Lys148 of yeast calmodulin. The mutant C4Y showed the yeast-type feature, and its enzyme activation profiles were similar to those of yeast calmodulin. A single substitution of Glu for Gln140 was carried out in the mutant C4Y. The resulting mutant (C4Y140E) bound 4 mol of Ca2+ and showed the vertebrate-type enzyme activation. Therefore, the alterations of 3 residues in the Ca(2+)-binding loop of the yeast-type domain IV, Ser129-->Asp, insertion of Ile130, and Gln140-->Glu, were enough for the recovery of Ca2+ binding and enzyme activation. Ca2+ binding to domain IV may induce the active conformation of the C-terminal half-molecular domain.
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Matsuura I, Kimura E, Tai K, Yazawa M. Mutagenesis of the fourth calcium-binding domain of yeast calmodulin. J Biol Chem 1993. [DOI: 10.1016/s0021-9258(19)38647-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Tomeno I, Yoshida M, Ikeda K, Tai K, Takamuku K, Koshizuka N, Tanaka S, Oka K, Unoki H. Raman scattering from spin fluctuations in Pr2-xCexCuO4-y, Nd2-xCexCuO4-y, and Sm2-xCexCuO4-y. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:3009-3019. [PMID: 9997603 DOI: 10.1103/physrevb.43.3009] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Itti R, Tomeno I, Ikeda K, Tai K, Koshizuka N, Tanaka S. Photoelectron spectroscopic study of Ba1-xRbxBiO3. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:435-440. [PMID: 9996229 DOI: 10.1103/physrevb.43.435] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Katsumata N, Shiraishi H, Itagaki T, Tai K, Suzuki H. [Study of neuromuscular transmission with evoked electromyography--10. Comparison of the responses during partial blockade by bungarotoxin and non-depolarizing relaxants]. MASUI. THE JAPANESE JOURNAL OF ANESTHESIOLOGY 1990; 39:1178-87. [PMID: 1978865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Effects of alpha-bungarotoxin (alpha BuTX) on muscle compound action potentials (CAPs) which were elicited from gastrocnemius muscle by sciatic nerve stimulation in cats were studied, and the results were compared with those of non-depolarizing relaxants including d-tubocurarine, pancuronium and vecuronium. The amplitude of CAP by the second member of the paired stimuli (test response) was compared with that evoked by the first component (conditioning response). The interval between the two components of the paired stimuli (the pair interval) was increased stepwise from 7 to 1,000 msec and a curve (recovery curve, RC) was obtained by relating the changes in pair interval to the difference in amplitude of the test and conditioning responses. The following results were obtained. (1) A progressive and irreversible neuromuscular block was observed after intravenous administration of alpha BuTX. During the progress of the blockade, RC of CAPs showed a pattern which was characterized by profound potentiations of test responses at shorter intervals of paired stimuli, followed by gradual recovery to similar amplitude with conditioning responses at 500 msec or over of pair interval. (2) With non-depolarizing relaxants, RC changed to the pattern of slight potentiation at a very short interval of stimuli, followed by a notable depression at longer intervals. (3) The mechanism of the development of these difference of RCs between alpha BuTX and the relaxants was discussed, and it is concluded that the notable depression of RCs derived from muscle relaxants may be caused by inhibitory effect on nerve terminals of these relaxants, and the inhibition was more prominent with d-tubocurarine than with other two relaxants.
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Hasegawa A, Tai K. Effects of modulational instability on coherent transmission systems. OPTICS LETTERS 1989; 14:512-513. [PMID: 19749969 DOI: 10.1364/ol.14.000512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The modulational instability of light waves in fibers with anomalous dispersion produces growth of initial sidebands generated in coherent transmission systems. Since the growth rate is proportional to the carrier intensity, the repeated amplification of the carrier degrades the signal-to-noise ratio in proportion to the product of the number of amplifications and the initial carrier intensity. With nominal parameters in a system of a few milliwatts of power, the e folding distance of the signal-to-noise ratio becomes of the order of a few hundred kilometers.
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Tai K, Mysyrowicz A, Fischer RJ, Slusher RE, Cho AY. Two-photon absorption spectroscopy in GaAs quantum wells. PHYSICAL REVIEW LETTERS 1989; 62:1784-1787. [PMID: 10039767 DOI: 10.1103/physrevlett.62.1784] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Wadler S, Tai K, Chervu LR, Rafii S, Landau L, Blaufox MD, Wiernik PH. Iodine-131 MIBG scintigraphy in small cell lung cancer. EUROPEAN JOURNAL OF NUCLEAR MEDICINE 1989; 15:108-10. [PMID: 2563970 DOI: 10.1007/bf00702629] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
There is a well documented relationship between small cell carcinoma of the lung and the amine precursor uptake and decarboxylation system of endocrine cells (APUD). We attempted to exploit this association by employing the unique radiopharmaceutical, 131I-MIBG, which is recognized and taken up by the APUD system to monitor disease activity in patients with small cell carcinoma of the lung. A total of eight patients with biopsy proven, metastatic small cell carcinoma of the lung were studied. 131I-MIBG was synthesized in our laboratory by reacting metaiodobenzylamine hydrochloride with cyanamide with subsequent solid phase radioiodination. A dose of 0.5 mCi radiopharmaceutical was injected and images obtained on a large field of view gamma camera with a high energy parallel hole collimator at 2, 24, and either 48 or 72 h. Images were compared with known focal areas of metastatic disease demonstrable on computed tomographic scan, chest roentgenogram or bone scan. We were unable to detect reproducible correlations between the images produced by conventional radiographic techniques and the images produced by our radiopharmaceutical. We conclude that this agent will probably not be useful for localization of metastatic small cell lung carcinoma.
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Hegarty J, Tai K, Tsang WT. Enhanced inelastic scattering and localization of excitons in In0.53Ga0.47As/InP alloy quantum wells. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 38:7843-7845. [PMID: 9945524 DOI: 10.1103/physrevb.38.7843] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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