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Bree K, Shan Y, Hensley P, Lobo N, Hu C, Tyler D, Chamie K, Kamat A, Williams S. Management, surveillance patterns, and costs associated with low-grade Papillary (Ta) non-muscle invasive bladder cancer. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00239-1] [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: 11/16/2022]
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Kamble R, Lobo N. 1284 Comparison of British Association of Urological Surgeons (BAUS) 2008 and NICE 2015 Guidelines for Patients with Suspected Urinary Tract Cancer: An Audit of Haematuria Referrals. Br J Surg 2021. [DOI: 10.1093/bjs/znab259.1106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Introduction
BAUS guidelines for the investigation of haematuria were replaced by NICE guidelines in 2015. However, both criteria are currently used to refer patients to our Haematuria Clinic. We audit the haematuria referrals made to our unit and compare cancer yield.
Method
A retrospective review of all two-week wait haematuria referrals to a single UK teaching hospital between October 2019 and April 2020 was performed. Referrals were stratified into two groups: BAUS 2008 and NICE 2015 referral criteria. The outcomes of haematuria investigations were analyzed and the incidence of urinary tract cancer (UTC) compared between groups.
Results
316 referrals were analyzed. Of these, 123 (39%) and 193 (61%) referrals were made using BAUS and NICE criteria respectively. 233 (74%) patients were investigated for visible haematuria of which 68 (29%) were referred using BAUS criteria and 165 (71%) using NICE. UTC was identified in 20% of patients referred using NICE criteria and 4.4% using BAUS criteria. 83 (26%) patients were referred with non-visible haematuria. Of these, 55 (66%) were referred using BAUS criteria and 28 (34%) using NICE. UTC was identified in 2.5% of patients referred using BAUS criteria. No UTC was identified in referrals using NICE criteria.
Conclusions
Despite BAUS haematuria guidelines being superseded by NICE guidelines in 2015, these older guidelines still account for 40% of our two-week wait referrals. Furthermore, NICE guidelines have a higher cancer yield for visible haematuria compared to BAUS guidelines and should therefore take precedence to avoid subjecting patients to unnecessary and costly investigations.
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Affiliation(s)
- R Kamble
- Brighton and Sussex University Hospitals NHS Trust, Brighton, United Kingdom
| | - N Lobo
- Brighton and Sussex University Hospitals NHS Trust, Brighton, United Kingdom
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3
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Spears M, Braunstein M, Liao L, Yao C, Lyttle N, Lobo N, Taylor KJ, Krzyzanowski PM, Kalatskaya I, Marcellus R, Stein L, Boutros P, Twelves CJ, Bartlett JMS. Abstract P3-06-03: Downregulation of histone H2A and H2B pathways is associated with anthracycline sensitivity in breast cancer. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p3-06-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Meta-analyses performed by the Early Breast Cancer Trialists Collaborative Group demonstrated a significant increase in disease free and overall survival through the addition of anthracyclines to polychemotherapy. Anthracyclines have, however, significant toxicities including cardiotoxicity and leukaemia. It is, therefore, imperative to identify those patients who will benefit from adjuvant anthracycline treatment; other patients could then be spared unnecessary toxicities and be considered for alternative adjuvant therapy. Several markers that may predict anthracycline benefit have been explored in patient cohorts (HER2, TOP2A, Ch17CEP and TIMP1) with limited success.
Methods: To identify markers that are clinically-relevant, we generated MDA-MB-231, MCF7, SKBR3 and ZR-75-1 breast cancer cell lines sensitive and resistant to epirubicin to identify pathways contributing to anthracycline resistance. A complementary approach including gene expression analyses to identify molecular pathways involved in resistance, and small-molecule inhibitors to reverse resistance were performed. RNA was extracted from patients in the BR9601 adjuvant trial evaluating the addition of epirubicin (E) to CMF and analysed through Nanostring technology. Log-rank analyses explored the predictive values of the signatures on distant relapse-free survival (DRFS). Cox-regression models tested independent predictive value on DRFS in the presence of treatment, age, tumour size, nodal status, ER status and grade, and treatment by marker interactions.
Results: Gene expression analysis identified upregulaton of a histone gene module in all four cell lines which was validated by qRT-PCR. Histone deacetylase small-molecule inhibitors reversed resistance and were cytotoxic for epirubicin-resistant cell lines, with IC50's ranging from 0.1-3.69µM, confirming that histone pathways are associated with epirubicin resistance. Gene expression analysis of the 18-gene histone module in the BR9601 clinical cohort revealed that patients whose tumour had low expression had an increased DRFS (HR: 0.35, 95%CI 0.17-0.73, p=0.005) when treated with E-CMF compared with patients treated with CMF alone. Conversely, there was no apparent benefit of E-CMF vs CMF in patients with high histone module expression (HR: 0.96, 95%CI 0.58-1.59, p=0.87). After multivariate analysis and adjustment for HER2 status, nodal status, age, grade and ER status, the treatment by marker interaction was 0.35 (95%CI 0.13-0.96, p=0.042) for DRFS.
Conclusion: Histone gene expression was an independent predictor of anthracycline benefit in terms of DRFS. In vitro data demonstrated that resistance could be reversed with histone deacetylase small-molecule inhibitors. The histone signature identified could be a potential theranostic candidate for patients with early breast cancer.
Citation Format: Spears M, Braunstein M, Liao L, Yao C, Lyttle N, Lobo N, Taylor KJ, Krzyzanowski PM, Kalatskaya I, Marcellus R, Stein L, Boutros P, Twelves CJ, Bartlett JMS. Downregulation of histone H2A and H2B pathways is associated with anthracycline sensitivity in breast cancer. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P3-06-03.
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Affiliation(s)
- M Spears
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - M Braunstein
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - L Liao
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - C Yao
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - N Lyttle
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - N Lobo
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - KJ Taylor
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - PM Krzyzanowski
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - I Kalatskaya
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - R Marcellus
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - L Stein
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - P Boutros
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - CJ Twelves
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
| | - JMS Bartlett
- Ontario Institute for Cancer Research, Toronto, ON, Canada; University of Edinburgh, Edinburgh, United Kingdom; Leeds Institute of Cancer and Pathology and Cancer Research Centre, Leeds, United Kingdom
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4
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Lobo N, Hall A, McIntyre C, Meacher R, Mace A. Optimising surgical tracheostomy provision for the intensive care unit: a multicycle audit of 36 cases. Clin Otolaryngol 2016; 41:612-4. [PMID: 26400149 DOI: 10.1111/coa.12544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2015] [Indexed: 11/27/2022]
Affiliation(s)
- N Lobo
- Department of ENT, Charing Cross Hospital, Imperial College Hospital NHS Trust, London, UK.
| | - A Hall
- Department of ENT, Charing Cross Hospital, Imperial College Hospital NHS Trust, London, UK
| | - C McIntyre
- Department of ENT, Charing Cross Hospital, Imperial College Hospital NHS Trust, London, UK
| | - R Meacher
- Department of Critical Care Medicine, Charing Cross Hospital, Imperial College Hospital NHS Trust, London, UK
| | - A Mace
- Department of ENT, Charing Cross Hospital, Imperial College Hospital NHS Trust, London, UK
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5
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Lobo N, Li X, Hua-Van A, Fraser MJ. Mobility of the piggyBac transposon in embryos of the vectors of Dengue fever (Aedes albopictus) and La Crosse encephalitis (Ae. triseriatus). Mol Genet Genomics 2014; 265:66-71. [PMID: 11370874 DOI: 10.1007/s004380000388] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The re-emergence of arboviral diseases such as Dengue Fever and La Crosse encephalitis is primarily due to the failure of insect vector control strategies. The development of a procedure capable of producing stable germ-line transformants in the insect vectors of these diseases would bridge the gap between gene expression systems being developed to curb vector transmission and the identification of important genes and regulatory sequences and their reintroduction back into the insect genome in the form of vector control strategies. The transposable element piggyBac is capable of transposition in a variety of insect species, and could serve as a versatile insect transformation vector. Using plasmid-based excision and transposition assays, we report that this short-ITR transposon undergoes precise, transposase-dependent excision and transposition in embryos of Aedes albopictus and Aedes triseriatus, the vectors of Dengue fever and LaCrosse encephalitis, respectively. These assays allow us easily and rapidly to confirm and assess the potential utility of piggyBac as a gene transfer tool in a given species. piggyBac is an exceptionally mobile and versatile genetic transformation vector, comparable to other transposons currently in use for the transformation of insects. The mobility of the piggyBac element seen in both Ae. albopictus and Ae. triseriatus is further evidence that it can be employed as a germ-line vector in important insect disease vectors.
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Affiliation(s)
- N Lobo
- Department of Biology, University of Notre Dame, IN 46556, USA
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6
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Lobo N, Yang B, Rizvi M, Ma D. Hypothermia and xenon: Novel noble guardians in hypoxic-ischemic encephalopathy? J Neurosci Res 2013; 91:473-8. [DOI: 10.1002/jnr.23178] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 09/25/2012] [Accepted: 10/19/2012] [Indexed: 01/13/2023]
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Ahuja BL, Dashora A, Heda NL, Priolkar KR, Vadkhiya L, Itou M, Lobo N, Sakurai Y, Chakrabarti A, Singh S, Barman SR. Temperature dependent spin momentum densities in Ni-Mn-In alloys. J Phys Condens Matter 2010; 22:446001. [PMID: 21403357 DOI: 10.1088/0953-8984/22/44/446001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The spin-dependent electron momentum densities in Ni(2)MnIn and Ni(2)Mn(1.4)In(0.6) shape memory alloy using magnetic Compton scattering with 182.2 keV circularly polarized synchrotron radiation are reported. The magnetic Compton profiles were measured at different temperatures ranging between 10 and 300 K. The profiles have been analyzed mainly in terms of Mn 3d electrons to determine their role in the formation of the total spin moment. We have also computed the spin polarized energy bands, partial and total density of states, Fermi surfaces and spin moments using full potential linearized augmented plane wave and spin polarized relativistic Korringa-Kohn-Rostoker methods. The total spin moments obtained from our magnetic Compton profile data are explained using both the band structure models. The present Compton scattering investigations are also compared with magnetization measurements.
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Affiliation(s)
- B L Ahuja
- Department of Physics, University College of Science, M L Sukhadia University, Udaipur, India.
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Abstract
The preferences of the deer mouse ( Peromyscus maniculatus (Wagner, 1845)), southern red-backed vole ( Myodes gapperi (Vigors, 1830)), heather vole ( Phenacomys intermedius Merriam, 1889), long-tailed vole ( Microtus longicaudus (Merriam, 1888)), and meadow vole ( Microtus pennsylvanicus (Ord, 1851)) for lodgepole pine ( Pinus contorta Dougl. ex Loud.), white spruce ( Picea glauca (Moench.) Voss), and subalpine fir ( Abies lasiocarpa (Hook.) Nutt.) seeds were investigated using cafeteria-style feeding experiments. Seed selection by P. maniculatus and M. gapperi in the field was also studied. Peromyscus maniculatus, M. gapperi, M. longicaudus, and M. pennsylvanicus showed a distinct preference for lodgepole pine seeds and avoidance of subalpine fir seeds, and consumed the different species of seeds in similar relative proportions. Phenacomys intermedius behaved very differently from the other rodent species in that it did not show a preference among seed species, and consumed very few seeds in total. Findings from the field seed selection trials were consistent with laboratory results. We suggest that postdispersal seed predation by small mammals could limit the recruitment success of lodgepole pine and white spruce, but would not be a major problem in the regeneration of subalpine fir stands. This could provide an advantage for subalpine fir over neighbouring competitive species.
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Affiliation(s)
- N. Lobo
- Department of Biology, University of Western Ontario, 1151 Richmond Street, London, ON N6A 5B7, Canada
| | - M. Duong
- Department of Biology, University of Western Ontario, 1151 Richmond Street, London, ON N6A 5B7, Canada
| | - J. S. Millar
- Department of Biology, University of Western Ontario, 1151 Richmond Street, London, ON N6A 5B7, Canada
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Cherney L, Small S, Wier H, Lobo N, Erickson R. Article 17. Arch Phys Med Rehabil 2006. [DOI: 10.1016/j.apmr.2006.07.020] [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: 11/28/2022]
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10
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Pedra JHF, Brandt A, Westerman R, Lobo N, Li HM, Romero-Severson J, Murdock LL, Pittendrigh BR. Transcriptome analysis of the cowpea weevil bruchid: identification of putative proteinases and alpha-amylases associated with food breakdown. Insect Mol Biol 2003; 12:405-12. [PMID: 12864920 DOI: 10.1046/j.1365-2583.2003.00425.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
We describe here the first systematic work to discover insect genes involved in food breakdown using a cDNA library enriched for gut-expressed transcripts from Callosobruchus maculatus. A total of 1056 clones were screened for cDNA insert-containing plasmids, and 503 nonredundant open reading frames were discovered. Twenty-three inferred genes potentially involved in digestive processes in cowpea weevil were identified, including proteinases and amylases. The predicted catalytic sites were identified in the inferred cysteine and aspartic acid proteinases, and in alpha-amylases. Transcriptome analysis of the cowpea bruchid will potentially permit gene discovery in other beetles, an insect order of major economic and ecological importance that is poorly represented in genomic databases.
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Affiliation(s)
- J H F Pedra
- Indiana Center for Insect Genomics (ICIG), University of Notre Dame, Notre Dame, IN, USA
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Li X, Lobo N, Bauser CA, Fraser MJ. The minimum internal and external sequence requirements for transposition of the eukaryotic transformation vector piggyBac. Mol Genet Genomics 2001; 266:190-8. [PMID: 11683259 DOI: 10.1007/s004380100525] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The piggyBac element from Trichoplusia ni is recognized as a useful vector for transgenesis of a wide variety of species. This transposable element is 2472 bp in length, and has a complex repeat configuration consisting of an internal repeat (IR), spacer, and terminal repeat (TR) at both ends, and a single ORF encoding the transposase. Excision assays performed in microinjected T. ni embryos using plasmids deleted for progressively larger portions of the piggyBac internal sequence reveal that the 5' and 3' IR, spacer, and TR configuration is sufficient for precise excision of piggyBac when transposase is provided in trans. Interplasmid transposition assays using plasmids carrying varying lengths of intervening sequence between the piggyBac termini in T. ni demonstrate that a minimum of 55 bp of intervening sequence is required for optimal transposition, while lengths less than 40 bp result in a dramatic decrease in transposition frequency. These results suggest that the piggyBac transposase may bind both termini simultaneously before cleavage can occur, and/or that the formation of a transposition complex requires DNA bending between the two termini. Based on these results we constructed a 702-bp cartridge with minimal piggyBac 5' and 3' terminal regions separated by an intervening sequence of optimal length. Interplasmid transposition assays demonstrate that the minimal terminal configuration is sufficient to mediate transposition, and also verify that simply inserting this cartridge into an existing plasmid converts that plasmid into a non-autonomous piggyBac transposon. We also constructed a minimal piggyBac vector, pXL-Bac, that contains an internal multiple cloning site sequence between the minimal terminal regions. These vectors should greatly facilitate the utilization of the piggyBac transposon in a wide range of hosts.
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Affiliation(s)
- X Li
- Department of Biological Sciences, and Center for Tropical Diseases Research and Training, University of Notre Dame, IN 46556, USA
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12
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Lobo N, Li X, Fraser MJ. Transposition of the piggyBac element in embryos of Drosophila melanogaster, Aedes aegypti and Trichoplusia ni. Mol Gen Genet 1999; 261:803-10. [PMID: 10394918 DOI: 10.1007/s004380050024] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The Lepidopteran transposable element piggyBac is being recognized as a useful vector for genetic engineering in a variety of insect species. This transposon can mediate transformation in the Dipteran species Ceratitis capitata, and can potentially serve as a versatile vector for transformation of a wide variety of insect species. Using a plasmid-based interplasmid transposition assay, we have demonstrated that this transposon, of the short inverted terminal repeat type, is capable of transposition in embryos of three different insect species, Drosophila melanogaster, the yellow fever mosquito Aedes aegypti, and its host of origin, Trichoplusia ni. This assay can confirm the potential utility of piggyBac as a gene transfer tool in a given insect species, and provides an experimental model for assessing molecular mechanisms of transposon movement.
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Affiliation(s)
- N Lobo
- Department of Biology, University of Notre Dame, IN 46556-0369, USA
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Passos LC, Lopes AA, Costa U, Lobo N, Rabelo Júnior A. Difference in the in-hospital mortality of unstable angina pectoris between men and women. Arq Bras Cardiol 1999; 72:669-76. [PMID: 10752173 DOI: 10.1590/s0066-782x1999000600002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To assess differences in the in-hospital mortality (HM) rate between men and women with unstable angina pectoris (UA) according to age, depression of the ST segment, history of previous acute myocardial infarction (AMI), and risk factors for coronary heart disease. METHODS From October 96 to March 98, 261 patients with UA were selected. Logistic regression models were developed to adjust the association between sex and HM for possible influence of covariables, such as hypertension, diabetes mellitus, dyslipidemia, sedentary lifestyle, smoking, and familial history of early coronary heart disease. RESULTS HM due to UA was approximately three times higher in women (9.3%; 12/129) than in men (3.0%; 4/132) accounting for a relative risk of 3.07; 95% confidence interval (CI) = 1.02-9.27. In logistic regression models, the association between sex and death was not significantly altered when the following parameters were considered: age, depression of the ST segment, history of previous AMI and risk factors for coronary heart disease. The nonadjusted and adjusted odds ratio (OR) for the distinct covariables were 3.28 (CI 95% = 1.03-10.45) and 3.14 (CI = 95% = 0.88-11.20), respectively. CONCLUSION Similarly to AMI, HM in UA is higher in women than in men. Age, risk factors for coronary heart disease, and depression of the ST segment in the electrocardiogram on patients' admission to the hospital did not significantly influence the association between sex and death.
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Affiliation(s)
- L C Passos
- Fundação Bahiana de Cardiologia, Hospital Universitário Prof. Edgar Santos, Salvador, Brazil
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14
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Abstract
The terminal DNA sequence requirements for piggyBac transposable element excision were explored using a plasmid-based assay in transfected, cultured insect cells. A donor plasmid containing duplicate 3' piggyBac terminal inverted repeats was constructed that allowed individual nucleotides or groups of nucleotides within one of the 3' repeats to be mutated. The relative extent of excision using the mutated end versus the wild-type end was then assayed. Removal of even one of the terminal 3' G nucleotides from the piggyBac inverted repeat, or removal of the dinucleotide AA from the flanking TTAA target site prevents excision of piggyBac at the mutated terminus. Incorporation of an asymmetric TTAC target site at the 3' end does not prevent excision from the mutated end. Thus, both piggyBac DNA and flanking host DNA appear to play crucial roles in the excision process.
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Affiliation(s)
- T A Elick
- University of Notre Dame, Department of Biological Sciences, IN 46556, USA
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Rabelo Júnior A, Rocha AR, Oliveira K, Souza A, Ximenes A, Andrade C, Onnis D, Olivaes I, Lobo N, Ferreira N, Werneck V. An expert system for diagnosis of acute myocardial infarction with ECG analysis. Artif Intell Med 1997; 10:75-92. [PMID: 9177817 DOI: 10.1016/s0933-3657(97)00385-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Coronary heart disease is one of the most prevalent and costly health care problems in the world. The early and accurate diagnosis of coronary heart disease is a major problem in emergency settings. However, many primary and secondary hospitals and primary emergency units lack cardiologists on call which makes the diagnosis difficult. This paper describes an expert system for diagnosis of acute myocardial infarction developed to aid physicians without cardiology specialization. Our main goal was to develop an expert system that assists in the diagnosis and indicates the need of hospitalization in a coronary unit.
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Affiliation(s)
- A Rabelo Júnior
- Federal University of Bahia, Cardiology and Cardiovascular Surgery Unit (UCCV) Fundação Bahiana de Cardiologia (FBC), Salvador, Brazil
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Abstract
Renal cysts are common lesions especially in the older population. Although the occurrence of a tumor within the wall of an otherwise benign cyst is rare, its accurate diagnosis is difficult. We present such a case, diagnosed preoperatively by computed tomography.
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Berlin L, Novetsky GJ, Epstein AJ, Miller SH, Lobo N. Efficacy of computed tomography in the diagnosis of herniated intervertebral disc. IMJ Ill Med J 1983; 163:101-5. [PMID: 6132899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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18
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Epstein AJ, Russell EJ, Berlin L, Novetsky GJ, Lobo N, Miller SH, Britt W. Suture granuloma: an unusual cause of an enhancing ring lesion in the postoperative brain. J Comput Assist Tomogr 1982; 6:815-7. [PMID: 7119205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Ring lesions are not infrequently noted at the operative site of intracranial tumors at varying intervals of time after surgery. We present a suture granuloma as an unusual cause of such a lesion. Two guidelines that help in the diagnosis and management of these lesions are discussed with emphasis on the value of the precontrast scan.
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Novetsky GJ, Berlin L, Epstein AJ, Lobo N, Miller SH. The extraforaminal herniated disk: detection by computed tomography. AJNR Am J Neuroradiol 1982; 3:653-5. [PMID: 6816042 PMCID: PMC8333795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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