76
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Günther S, Kopatzki E, Bartelt MC, Evans JW, Behm RJ. Anisotropy in nucleation and growth of two-dimensional islands during homoepitaxy on "hex" reconstructed Au(100). PHYSICAL REVIEW LETTERS 1994; 73:553-556. [PMID: 10057476 DOI: 10.1103/physrevlett.73.553] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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77
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Evans JW, Bartelt MC. Kinetics of restricted solid-on-solid models of film growth. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1994; 49:1061-1069. [PMID: 9961313 DOI: 10.1103/physreve.49.1061] [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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78
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Potter JT, Evans JW, Nolt BH. Therapeutic horseback riding. J Am Vet Med Assoc 1994; 204:131-3. [PMID: 8125810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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79
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Kovacs MS, Evans JW, Johnstone IM, Brown JM. Radiation-induced damage, repair and exchange formation in different chromosomes of human fibroblasts determined by fluorescence in situ hybridization. Radiat Res 1994; 137:34-43. [PMID: 8265786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We have used fluorescence in situ hybridization with whole-chromosome probes for human chromosomes 1, 4, 8 and 13 to investigate the extent to which the induction of damage and its repair after exposure to ionizing radiation is distributed randomly among these chromosomes. All the studies were performed with AG1522 human fibroblasts irradiated with 6 Gy and maintained in a nondividing state for at least 6 h after irradiation except for the measurements of initial damage. The extent of initial damage was determined by fusion of the cells immediately after irradiation with metaphase HeLa cells to obtain premature chromosome condensation (PCC). Breaks and exchanges were also scored by PCC 24 h after irradiation and in metaphase spreads at the first division after irradiation. The data obtained were consistent with random breakage and repair in these chromosomes. Comparing PCC 24 h after irradiation with first metaphase, there was a deficit in aberrations at metaphase, particularly in unrejoined breaks, implying loss or slowing of cells containing aberrations prior to the first division. An analysis of dicentrics and translocations in chromosome 4 at first and in subsequent divisions showed that there was an equal number of dicentrics and translocations at first metaphase with loss of dicentrics, but no loss of translocations in subsequent divisions. These data are supportive of the hypothesis tht the total number of chromosome aberrations in cells can be estimated from a single chromosome pair.
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MESH Headings
- Chromosome Aberrations
- Chromosome Banding
- Chromosomes, Human/radiation effects
- Chromosomes, Human, Pair 1/radiation effects
- Chromosomes, Human, Pair 11/radiation effects
- Chromosomes, Human, Pair 4/radiation effects
- Chromosomes, Human, Pair 8/radiation effects
- DNA/radiation effects
- DNA Damage
- DNA Repair/radiation effects
- Dose-Response Relationship, Radiation
- Fibroblasts/cytology
- Fibroblasts/radiation effects
- Gene Deletion
- Genome, Human
- Humans
- In Situ Hybridization, Fluorescence
- Karyotyping
- Lymphocytes/cytology
- Lymphocytes/radiation effects
- Translocation, Genetic
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80
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Smith DJ, Handy FC, Evans JW, Falzon M, Chapple CR. Paget's disease of the glans penis: an unusual urological malignancy. Eur Urol 1994; 25:316-9. [PMID: 8056024 DOI: 10.1159/000475309] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Paget's disease of the male external genitalia is rare. We describe a case involving the glans penis, 2 years following total cysto-urethrectomy for invasive transitional cell carcinoma of the bladder and review the literature on this unusual malignancy.
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81
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Meng B, Weinberg WH, Evans JW. Transitions in the kinetics and steady states of irreversible A+BC surface-reaction models. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1993; 48:3577-3588. [PMID: 9961015 DOI: 10.1103/physreve.48.3577] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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82
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Alvarez L, Evans JW, Wilks R, Lucas JN, Brown JM, Giaccia AJ. Chromosomal radiosensitivity at intrachromosomal telomeric sites. Genes Chromosomes Cancer 1993; 8:8-14. [PMID: 7691162 DOI: 10.1002/gcc.2870080103] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Telomeric DNA is composed of highly conserved sequences which are present at the termini of chromosomes as well as at intrachromosomal locations. Here, we studied a Chinese hamster ovary (CHO) cell line, BL-10, with highly stable amplified telomeric DNA at the termini as well as at intrachromosomal locations. We show that intrachromosomal or interstitial telomeric sites in this cell line and in another CHO cell line, HA-I, are radiosensitive in that they are more prone to breakage than would be expected based on the percentage of the genome composed of telomeric sequences. The frequency of breakage at interstitial telomeric sites is 4.3 to 8.3 times higher than that in the CHO genome overall. These conclusions are reached by both conventional cytogenetic analysis of two CHO cell lines which have the same survival rates after exposure to ionizing radiation, and by use of double fluorescence in situ hybridization (FISH) with a pan-telomere-specific probe and a CHO chromosome-specific library in the same metaphase cells after irradiation.
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83
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Bartelt MC, Tringides MC, Evans JW. Island-size scaling in surface deposition processes. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:13891-13894. [PMID: 10005717 DOI: 10.1103/physrevb.47.13891] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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84
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Evans JW, Ray TR. Kinetics of the monomer-monomer surface reaction model. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1993; 47:1018-1025. [PMID: 9960101 DOI: 10.1103/physreve.47.1018] [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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85
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Abella Columna E, Giaccia AJ, Evans JW, Yates BL, Morgan WF. Analysis of restriction enzyme-induced chromosomal aberrations by fluorescence in situ hybridization. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 1993; 22:26-33. [PMID: 8393403 DOI: 10.1002/em.2850220106] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Fluorescence in situ hybridization and Giemsa staining of metaphase chromosomes were used to determine the relative frequencies of symmetric exchange aberrations (translocations) and asymmetric exchange aberrations (rings, dicentrics, and polycentrics) after exposure of human lymphoblastoid cells to restriction enzymes or X-rays. The yield of symmetric exchanges was determined with the use of chromosome-specific probes for human chromosomes 2 or 4, which were hybridized to metaphase chromosomes from cells exposed to the enzymes PvuII, SacI, or XbaI or 3 or 5 Gy of X-rays. The yield of asymmetric exchanges was determined in Giemsa-stained metaphase chromosomes from the same enzyme-treated or irradiated cell population. About 1.5- to 3-fold more symmetric than asymmetric exchanges were induced after restriction enzyme treatment. However, after X-ray treatment the yield of dicentrics relative to the yield of reciprocal translocations was close to the expected 1:1 ratio.
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86
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Brown JM, Evans JW, Kovacs MS. Mechanism of chromosome exchange formation in human fibroblasts: insights from "chromosome painting". ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 1993; 22:218-224. [PMID: 8223502 DOI: 10.1002/em.2850220407] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We have used the techniques of premature chromosome condensation (PCC) and fluorescence in situ hybridization (FISH) with a library for human chromosome 4 to analyze the rate of rejoining of chromosome breaks and development of exchange aberrations in AG1522 human fibroblasts. AG1522 cells were irradiated in plateau phase with 10 Gy and fused with mitotic HeLa cells either immediately after irradiation or at intervals up to eight days later. The slides were then hybridized with the chromosome 4 library and unrejoined breaks and exchange events (visualized as bicolor chromosomes) scored in these cells. At the earliest time point after irradiation, the number of exchange events in the irradiated cells was low, but increased with kinetics similar to that of the joining of the breaks. Furthermore, when we analyzed those cells which had exchange events for their distribution, almost all of the cells initially contained one exchange event (1 bicolor chromosome). As time progressed, the number of cells containing exchanges with two exchange events per cell increased as the number with one exchange event per cell decreased. Extrapolation of the number of exchange events to zero time (with an estimate of 20 min for the fusion and condensation times) gave a value consistent with zero exchanges at zero time after irradiation. In a separate experiment, we also scored AG 1522 cells at the first metaphase after a dose of 6 Gy and were able to show that as many as 50% of the complete exchanges were non-reciprocal in nature, that is, the two broken ends of a single break in chromosome 4 joined to two different chromosomes. These data support the classical breakage-and-reunion model rather than the Revell Exchange Theory of exchange formation.
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87
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Bartelt MC, Evans JW. Scaling analysis of diffusion-mediated island growth in surface adsorption processes. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:12675-12687. [PMID: 10003187 DOI: 10.1103/physrevb.46.12675] [Citation(s) in RCA: 274] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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88
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Evans JW, Singer M, Chapple CR, Macartney N, Walker JM, Milroy EJ. Haemodynamic evidence for cardiac stress during transurethral prostatectomy. BMJ (CLINICAL RESEARCH ED.) 1992; 304:666-71. [PMID: 1571637 PMCID: PMC1881532 DOI: 10.1136/bmj.304.6828.666] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To compare haemodynamic performance during transurethral prostatectomy and non-endoscopic control procedures similar in duration and surgical trauma. DESIGN Controlled comparative study. SETTING London teaching hospital. PATIENTS 33 men aged 50-85 years in American Society of Anesthesiologists risk groups I and II undergoing transurethral prostatectomy (20), herniorrhaphy (eight), or testicular exploration (five). MAIN OUTCOME MEASURES Percentage change from baseline in mean arterial pressure, heart rate, Doppler indices of stroke volume and cardiac output, and index of systemic vascular resistance, and change from baseline in core temperature. RESULTS In the control group mean arterial pressure fell to 11% (95% confidence interval -17% to -5%) below baseline at two minutes into surgery and remained below baseline; there were no other overall changes in haemodynamic variables and the core temperature was stable. During transurethral prostatectomy mean arterial pressure increased by 16% (5% to 27%) at the two minute recording and remained raised throughout. Bradycardia reached -7% (-14% to 1%) by the end of the procedure. Doppler indices of stroke volume fell progressively to 15% (-24% to -6%) below baseline at the end of the procedure, and the index of cardiac output fell to 21% (-32% to -10%) below baseline by the end of the procedure. The index of systemic vascular resistance was increased by 28% (17% to 38%) at two minutes, and by 46.8% (28% to 66%) at the end of the procedure. Core temperature fell by a mean of 0.8 (-1.0 to -0.6) degrees C. Significant differences existed between the two groups in summary measures of mean arterial pressure (p less than 0.05), Doppler indices of stroke volume (p less than 0.005) and cardiac output (p less than 0.005), index of systemic vascular resistance (p less than 0.0005), and core temperature (p less than 0.0001). CONCLUSIONS Important haemodynamic disturbances were identified during routine apparently uneventful transurethral prostatectomy but not during control procedures. These responses may be related to the rapid central cooling observed during transurethral prostatectomy and require further study.
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89
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Smith LM, Evans JW, Mori M, Brown JM. The frequency of translocations after treatment for Hodgkin's disease. Int J Radiat Oncol Biol Phys 1992; 24:737-42. [PMID: 1429098 DOI: 10.1016/0360-3016(92)90722-t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We studied the frequency of translocations in peripheral blood lymphocytes of patients with Hodgkin's disease to determine the extent of chromosome changes induced by radiation or radiation and chemotherapy. Comparisons were made to patients with second cancers to determine if this population is more susceptible to the effects of treatment. Group one included six patients with newly diagnosed Hodgkin's disease who were treated with radiation only. Group two included Hodgkin's disease patients who were treated 12-24 years previously and have been continuously free of disease. Five of these patients were treated with radiation only and five patients received radiation and mechlorethaminehydrochloride, oncovin, procarbazine, prednisone (MOPP) chemotherapy for six cycles. Group three included three patients who developed a second cancer after successful treatment for Hodgkin's disease. Two of these patients had a sarcoma within the radiation field and one had breast cancer. Metaphase spreads were obtained from cultured lymphocytes and hybridized with a chromosome 4 specific probe. After fluorescein staining, approximately 1000 metaphases were scored per patient. In group one only one patient in six demonstrated translocations in chromosome 4 before treatment for a mean frequency of .0009. After treatment the frequency of translocations increased to a mean of .016 (p = .036) (range .006-.034). Group two patients treated with radiation only had a mean translocation frequency of .012 (range .004-.022) in comparison to the radiation/mechlorethaminehydrochloride, oncovin, procarbazine, prednisone chemotherapy treated patients who demonstrated a mean frequency of .016 (p = .425) (range .0009-.023). The third group of second cancer patients showed inconsistent translocation frequencies of .002, .020, and .035. Of these patients, the one who demonstrated the greatest frequency of translocations (.035) was treated with mechlorethaminehydrochloride, oncovin, procarbazine, prednisone/adriamycin, bleomycin, vinblastine, decadron) and radiation. Our data demonstrates a statistically significant increase in translocations detected after radiation. When compared to combined modality therapy a greater mean frequency of translocations is observed over radiation alone; however, this was not statistically significant. In the three patients who developed second cancers in our series we saw no consistent increase in translocation frequency compared to Hodgkin's disease patients who did not develop a second cancer.
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90
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Kang HC, Evans JW. Scaling behavior of deposition models with limited downward mobility. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:2335-2344. [PMID: 9906214 DOI: 10.1103/physreva.44.2335] [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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91
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Giaccia AJ, Lewis AD, Denko NC, Cholon A, Evans JW, Waldren CA, Stamato TD, Brown JM. The hypersensitivity of the Chinese hamster ovary variant BL-10 to bleomycin killing is due to a lack of glutathione S-transferase-alpha activity. Cancer Res 1991; 51:4463-9. [PMID: 1714344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
As a means to understand the fundamental mechanisms of bleomycin cell killing, we previously isolated 19 bleomycin-sensitive mutants which represent at least six genetically distinct complementation groups (T.D. Stamato, B. Peters, P. Patil, N. Denko, R. Weinstein, and A. Giaccia. Cancer Res., 47: 1588-1592, 1987). One class of mutants represented by the cell line BL-10 displays only hypersensitivity to killing by bleomycin in both acute (16 h) and chronic treatments but no sensitivity to killing by other DNA-damaging agents. Complementation studies between this mutant and human fibroblasts suggested that the human gene which corrects the defect of BL-10 rested on human chromosome 6. It has been reported that the gene for human glutathione S-transferase (GST) alpha also resides on chromosome 6. Measurements of selenium-independent peroxidase (alpha-GST + glutathione peroxidase) activity in wild-type Chinese hamster ovary (CHO) cells, using cumene hydrogen peroxide as a substrate, gave a value of 112 nmol of glutathione oxidized/min/mg protein compared with 88.1 nmol of glutathione oxidized/min/mg protein for BL-10. Measurement of the selenium-dependent peroxidase activity, using H2O2 as a substrate, resulted in 65.9 nmol of reduced glutathione oxidized/min/mg protein in CHO and 81.5 nmol of reduced glutathione oxidized/min/mg protein for BL-10. In other words, BL-10 cells did not exhibit a difference in their ability to metabolize both substrates in contrast to CHO cells. This indicates that BL-10 possesses little alpha-GST activity. Transfection of BL-10 cells with a mammalian expression vector containing the alpha-GST gene increases the survival of BL-10 to bleomycin and does not increase the bleomycin resistance of two other bleomycin mutants which lie in different genetic complementation groups. These data strongly implicate a role for alpha-GST in the resistance of cells to bleomycin.
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92
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Ralph DJ, Chapple CR, Evans JW. Seeding of transitional cell carcinoma within the vagina. BRITISH JOURNAL OF UROLOGY 1991; 67:660-1. [PMID: 2070221 DOI: 10.1111/j.1464-410x.1991.tb15241.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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93
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Anderson RL, Fong KJ, Gabriele T, Lavagnini P, Hahn GM, Evans JW, Waldren CA, Stamato TD, Giaccia AJ. Loss of the intrinsic heat resistance of human cells and changes in Mr 70,000 heat shock protein expression in human x hamster hybrids. Cancer Res 1991; 51:2636-41. [PMID: 2021941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Since mammalian cells vary widely in their intrinsic thermoresistance, we have investigated the genetic basis underlying this phenomenon in human and rodent cell lines. Typically, human cells are considerably more resistant to killing by heat than rodent cell lines. To determine whether the heat-resistant phenotype is dominant or recessive and to locate the chromosome(s) bearing determinants for heat resistance, we have prepared hybrids of heat-resistant human HT1080 cells and heat-sensitive Chinese hamster ovary (CHO) cells to test their response to heat. For both mass hybrid cultures and individual clones, the heat response of the hybrids was similar to that of the CHO parent. Analysis by in situ hybridization revealed the presence of five to 20 human chromosomes per cell in the mass hybrids and four to eight intact chromosomes plus some fragments in individual clones isolated from the hybrid cell population. A similar result was obtained using a different human cell line, AG1522. These data suggest that heat resistance is a recessive trait. Consistent with this conclusion are the results from a study of a fusion of HT1080 to a CHO mutant, BL-10, which was found to be hypersensitive to heat-induced killing. These hybrids had a normal CHO heat response and not the more heat-resistant phenotype of HT1080 cells. Two hybrid clones, H2 and H4, from the HT1080/BL-10 fusion were studied in more detail. Both clones possess similar amounts of Mr 70,000 heat shock protein (HSP70), despite the fact that H4 contains three human chromosomes (Nos. 6, 14, and 21) which carry HSP70 genes while H2 contains only one (chromosome 6). Both hybrid cell lines have the same response to heat. Although we found a wide range of sensitivities to heat, all cell lines contained a similar amount of constitutive HSP70, suggesting that HSP70 levels per se are not the critical determinant of intrinsic heat resistance.
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94
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Evans JW, Christmas TJ. Detrusor instability following colchicine therapy. BRITISH JOURNAL OF UROLOGY 1991; 67:552-4. [PMID: 2039931 DOI: 10.1111/j.1464-410x.1991.tb15209.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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95
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Evans JW, Singer M, Chapple CR, Macartney N, Coppinger SW, Milroy EJ. Haemodynamic evidence for per-operative cardiac stress during transurethral prostatectomy. Preliminary communication. BRITISH JOURNAL OF UROLOGY 1991; 67:376-80. [PMID: 1709578 DOI: 10.1111/j.1464-410x.1991.tb15165.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Haemodynamic changes were measured during routine transurethral prostatectomy (TURP). The heart rate and stroke volume fell progressively over the first 30 min of surgery, resulting in a steady reduction in cardiac output. There was a significant increase in left ventricular afterload from commencement of the procedure. These findings demonstrate that haemodynamic responses, which are not detectable using conventional methods of monitoring, occur during TURP. Increased left ventricular afterload indicates increased myocardial work and oxygen demand which could result in myocardial ischaemia. This may contribute to the increased cardiovascular morbidity and mortality which have been reported to occur after TURP. The possible underlying mechanisms are discussed.
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96
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Evans JW, Chang JA, Giaccia AJ, Pinkel D, Brown JM. The use of fluorescence in situ hybridisation combined with premature chromosome condensation for the identification of chromosome damage. Br J Cancer 1991; 63:517-21. [PMID: 2021536 PMCID: PMC1972339 DOI: 10.1038/bjc.1991.123] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The technique of fusing mitotic cells to interphase cells, thereby producing condensation of the chromosomes of the interphase cell (so-called 'premature chromosome condensation' or PCC), has allowed detection of the initial number of chromosome breaks and their repair following ionising radiation. However, the difficulty and tedium of scoring all the chromosome fragments, as well as the inability to readily detect exchange aberrations, has limited the use of PCC. We describe here the use of the recently developed technique of fluorescence in situ hybridisation with whole chromosome libraries to stain individual human chromosomes (also called 'chromosome painting') with the PCC's and show that this overcomes most of the limitations with the analysis of PCC's. First, by focusing on a single chromosome, scoring of breaks in the target chromosome is easy and rapid and greatly expands the radiation dose range over which the PCC technique can be used. Second, it allows the easy recognition of exchange type aberrations. A number of new applications of this technology, such as predicting the radiosensitivity of human tumours in situ, are feasible.
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97
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Evans JW. Factors mediating smoothness in epitaxial thin-film growth. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:3897-3905. [PMID: 9997733 DOI: 10.1103/physrevb.43.3897] [Citation(s) in RCA: 63] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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98
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Evans JW, Miesch MS. Characterizing kinetics near a first-order catalytic-poisoning transition. PHYSICAL REVIEW LETTERS 1991; 66:833-836. [PMID: 10043912 DOI: 10.1103/physrevlett.66.833] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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99
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Elliott JP, Gordon JO, Evans JW, Platt LO, Milam WH. Post prostatectomy bladder neck contractures. JOURNAL OF THE MISSISSIPPI STATE MEDICAL ASSOCIATION 1991; 32:41-3. [PMID: 2041040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
An 8% and 7% incidence of bladder neck contractures (BNC) requiring relief by transurethral incisions (TUI), (124) was found after review of 1471 TURP's and 71 retropubic prostatectomies. Prevention of BNC was attempted by leaving a one centimeter strip at the time of TURP (62), incising the bladder neck alone (42), or incising the bladder neck and interureteric ridge (65). Bladder neck obstruction occurred in 4.8% of the strips, 14% of the incised bladder necks only, and 3% of the incised bladder neck and contiguous interureteric ridges. A significant cost savings is possible.
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100
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Evans JW, Ralph DJ. Removal of ureteric stents with a flexible cystoscope. BRITISH JOURNAL OF UROLOGY 1991; 67:109. [PMID: 1993269 DOI: 10.1111/j.1464-410x.1991.tb15088.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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