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Clinical calculator predictive of chemotherapy benefit in stage 1A uterine papillary serous cancers. Gynecol Oncol 2019; 156:77-84. [PMID: 31796203 DOI: 10.1016/j.ygyno.2019.10.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 10/14/2019] [Accepted: 10/15/2019] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Determine the utility of a clinical calculator to predict the benefit of chemotherapy in stage IA uterine papillary serous cancer (UPSC). PATIENTS AND METHODS Data were collected from NCDB from years 2010-2014. Based on demographic and surgical characteristics, a clinical score was developed using the random survival forest machine learning algorithm. RESULTS Of 1,751 patients with stage IA UPSC, 1,012 (58%) received chemotherapy and 739 (42%) did not. Older age (HR 1.06), comorbidities (HR 1.31), larger tumor size (HR 1.27), lymphovascular invasion (HR 1.86), positive peritoneal cytology (HR 2.62), no pelvic lymph node dissection (HR 1.51), and no chemotherapy (HR 2.16) were associated with poorer prognosis. Compared to no chemotherapy, patients who underwent chemotherapy had a 5-year overall survival of 80% vs. 67%. To better delineate those who may derive more benefit from chemotherapy, we designed a clinical calculator capable of dividing patients into low, moderate, and high-risk groups with associated 5-year OS of 86%, 73%, and 53%, respectively. Using the calculator to assess the relative benefit of chemotherapy in each risk group, chemotherapy improved the 5-year OS in the high (42% to 64%; p < 0.001) and moderate risk group (66% to 79%; p < 0.001) but did not benefit the low risk group (84% to 87%; p = 0.29). CONCLUSION Our results suggest a clinical calculator is useful for counseling and personalizing chemotherapy for stage IA UPSC.
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Male fertility in cystic fibrosis. IRISH MEDICAL JOURNAL 2009; 102:204-206. [PMID: 19771998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Infertility rates among males with cystic fibrosis (CF) approximate 97%. No information is currently available within Ireland determining an understanding of fertility issues and the best methods of information provision to this specialized group. This study aimed to determine understanding and preferred approaches to information provision on fertility issues to Irish CF males. A Descriptive Study utilizing prospective coded questionnaires was mailed to a male CF cohort (n=50). Sections included demographics, fertility knowledge & investigation. Response rate was 16/50 (32%). All were aware that CF affected their fertility. More than two-thirds (n=11) were able to provide explanations whilst only one-third (n=5) provided the correct explanation. Significant numbers stated thoughts of marriage and a future family. Half have discussed fertility with a healthcare professional (HCP). Mean age of discussion was 21.9 years. One third preferred an earlier discussion. The commonest first source for information was written material which was also the preferred source. Three-quarters requested further information preferring again, written material. Significant gaps in sex education of Irish CF males exist. Discussion should be initiated by HCPs and centre-directed written material devised to address deficiencies.
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Comments on the letter «Limits on the electromagnetic production of heavy leptons». ACTA ACUST UNITED AC 2008. [DOI: 10.1007/bf02784677] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Size-induced changes in optical and X-ray photoelectron spectra of GaN nanoparticles deposited at lower substrate temperature. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2005; 5:1858-63. [PMID: 16433422 DOI: 10.1166/jnn.2005.424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
This study reports the synthesis of GaN nanoparticles having hexagonal structure by a simple technique of activated reactive evaporation with substrates kept at comparatively lower temperatures than usually reported. By varying the substrate temperature from 30 degrees C to 350 degrees C, it is possible to vary nanoparticle sizes from 5-30 nm. X-ray diffraction and X-ray photoelectron spectroscopy analysis confirm the formation of GaN on quartz and silicon substrates at room temperature. The observed size dependent shift in energy position, large increase in full width at half maximum value of Ga 3d and N 1s X-ray photoelectron spectroscopy peaks and blue shift in the optical absorption edge are related to nanoparticle character.
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Measurement of the reaction 12C( nu micro, micro-)X near threshold. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1995; 51:R1065-R1069. [PMID: 9970223 DOI: 10.1103/physrevc.51.r1065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Atmospheric neutrino data and neutrino oscillations. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1993; 48:1140-1149. [PMID: 10016348 DOI: 10.1103/physrevd.48.1140] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Neutrino cross sections and the small atmospheric nu micro/ nu e ratio. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1993; 48:422-424. [PMID: 10016095 DOI: 10.1103/physrevd.48.422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Search for neutrino-induced low-energy-electron-event clusters in Kamiokande-II. Int J Clin Exp Med 1992; 45:3355-3360. [PMID: 10014233 DOI: 10.1103/physrevd.45.3355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Erratum: Real-time, directional measurement of 8B solar neutrinos in the Kamiokande II detector. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1992; 45:2170. [PMID: 10014599 DOI: 10.1103/physrevd.45.2170] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Mass limits for dark-matter particles derived from high-energy neutrinos from the Sun. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1991; 44:2220-2240. [PMID: 10014105 DOI: 10.1103/physrevd.44.2220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Real-time, directional measurement of 8B solar neutrinos in the Kamiokande II detector. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1991; 44:2241-2260. [PMID: 10014106 DOI: 10.1103/physrevd.44.2241] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Measurements of the charge ratio and polarization of 1.2-TeV/c cosmic-ray muons with the Kamiokande II detector. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1991; 44:617-621. [PMID: 10013917 DOI: 10.1103/physrevd.44.617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Search for fractionally charged particles in Kamiokande II. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1991; 43:2843-2846. [PMID: 10013681 DOI: 10.1103/physrevd.43.2843] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Search for day-night and semiannual variations in the solar neutrino flux observed in the Kamiokande-II detector. PHYSICAL REVIEW LETTERS 1991; 66:9-12. [PMID: 10043129 DOI: 10.1103/physrevlett.66.9] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Results from one thousand days of real-time, directional solar-neutrino data. PHYSICAL REVIEW LETTERS 1990; 65:1297-1300. [PMID: 10042228 DOI: 10.1103/physrevlett.65.1297] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Constraints on neutrino-oscillation parameters from the Kamiokande-II solar-neutrino data. PHYSICAL REVIEW LETTERS 1990; 65:1301-1304. [PMID: 10042229 DOI: 10.1103/physrevlett.65.1301] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Determination of electroweak parameters from the elastic scattering of muon neutrinos and antineutrinos on electrons. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1990; 41:3297-3316. [PMID: 10012268 DOI: 10.1103/physrevd.41.3297] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Observation of 8B solar neutrinos in the Kamiokande-II detector. PHYSICAL REVIEW LETTERS 1989; 63:16-19. [PMID: 10040421 DOI: 10.1103/physrevlett.63.16] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Determination of sin2 theta W from measurements of differential cross sections for muon-neutrino and -antineutrino scattering by electrons. PHYSICAL REVIEW LETTERS 1989; 62:1709-1712. [PMID: 10039747 DOI: 10.1103/physrevlett.62.1709] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Experimental study of upward-going muons in Kamiokande. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1989; 39:1481-1491. [PMID: 9959807 DOI: 10.1103/physrevd.39.1481] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Search for correlation of neutrino events with solar flares in Kamiokande. PHYSICAL REVIEW LETTERS 1988; 61:2653-2656. [PMID: 10039188 DOI: 10.1103/physrevlett.61.2653] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Experimental limit on the flux of relic antineutrinos from past supernovae. PHYSICAL REVIEW LETTERS 1988; 61:385-388. [PMID: 10039319 DOI: 10.1103/physrevlett.61.385] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Observation in the Kamiokande-II detector of the neutrino burst from supernova SN1987A. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1988; 38:448-458. [PMID: 9959161 DOI: 10.1103/physrevd.38.448] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Search for high-energy neutrinos from SN1987A: First six months. PHYSICAL REVIEW LETTERS 1987; 59:2604-2606. [PMID: 10035595 DOI: 10.1103/physrevlett.59.2604] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Comprehensive analysis of data pertaining to the weak neutral current and the intermediate-vector-boson masses. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1987; 36:1385-1407. [PMID: 9958313 DOI: 10.1103/physrevd.36.1385] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Comparison of narrow-band and wide-band neutrino beams in the search for nu micro--> nu e oscillations. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1987; 36:702-706. [PMID: 9958222 DOI: 10.1103/physrevd.36.702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Observation of a neutrino burst from the supernova SN1987A. PHYSICAL REVIEW LETTERS 1987; 58:1490-1493. [PMID: 10034450 DOI: 10.1103/physrevlett.58.1490] [Citation(s) in RCA: 252] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Measurement of the weak-neutral-current coupling constants of the electron and limits on the electromagnetic properties of the muon neutrino. PHYSICAL REVIEW LETTERS 1987; 58:636-639. [PMID: 10034996 DOI: 10.1103/physrevlett.58.636] [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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Measurement of neutrino-proton and antineutrino-proton elastic scattering. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1987; 35:785-809. [PMID: 9957724 DOI: 10.1103/physrevd.35.785] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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New limit on the strength of mixing between nu micro and nu e. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1985; 31:2732-2736. [PMID: 9955587 DOI: 10.1103/physrevd.31.2732] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Measurement of the ratio of cross sections for neutrino and antineutrino scattering from electrons. PHYSICAL REVIEW LETTERS 1985; 54:18-21. [PMID: 10030873 DOI: 10.1103/physrevlett.54.18] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Statistical fluctuation versus specific mechanism and the origin of the left-handed asymmetry of proteins. ORIGINS OF LIFE 1983; 13:113-8. [PMID: 6669373 DOI: 10.1007/bf00928889] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We point out an intrinsic weakness in the reasoning that adduces a statistical fluctuation as the origin of a left-handed, prebiotic stereoisomeric asymmetry which might have been the initial asymmetry that led to the left-handed asymmetry of proteins observed now on Earth. The argument in favor of a statistical fluctuation as the source of the asymmetry depends implicitly on the assumption of a very small number of terrestrial sites at which polymerization leading to protein formation took place. On the other hand, the probability that a left-handed prebiotic asymmetry produced by a specific mechanism was efficacious would have increased linearly with the number of terrestrial sites. Thus, on the basis of the greater likelihood of a large number of possible polymerization sites in the prebiotic era, a random fluctuation is deemed to be a much less probable source of a stereoisomeric asymmetry than a specific mechanism, particularly the mechanism that follows from the parity violating weak interaction.
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Chirality of electrons from beta-decay and the left-handed asymmetry of proteins. ORIGINS OF LIFE 1981; 11:255-65. [PMID: 7301349 DOI: 10.1007/bf00931391] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A simplified mathematical model of the origin of the left-handed asymmetry of proteins in living matter is presented. The model is based on the hypothesis of Vester and Ulbricht that the chirality of (left-handed) electrons from naturally beta-active elements, e.g. 14C, 40K, etc., was the specific source of the asymmetry; it requires for its application data on interaction of electrons having non-zero chirality with racemic mixtures of amino acids. This interaction is here treated theoretically in an order-of-magnitude calculation. Our analysis yields a very approximate value of the induced steady-state asymmetry in the amino acids at the beginning of protein synthesis and indicates that this asymmetry, though small, may have been sufficient to account for the dominant left-handedness of proteins now observed.
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Elementary Particle Physics. Science 1981; 212:656. [PMID: 17739396 DOI: 10.1126/science.212.4495.656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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