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Singh S, Dehghani Firouzabadi F, Chaurasia A, Homayounieh F, Ball MW, Huda F, Turkbey EB, Linehan WM, Malayeri AA. CT-derived radiomics predict the growth rate of renal tumours in von Hippel-Lindau syndrome. Clin Radiol 2024; 79:e675-e681. [PMID: 38383255 PMCID: PMC11075775 DOI: 10.1016/j.crad.2024.01.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 12/26/2023] [Accepted: 01/22/2024] [Indexed: 02/23/2024]
Abstract
AIM To predict renal tumour growth patterns in von Hippel-Lindau syndrome by utilising radiomic features to assist in developing personalised surveillance plans leading to better patient outcomes. MATERIALS AND METHODS The study evaluated 78 renal tumours in 55 patients with histopathologically-confirmed clear cell renal cell carcinomas (ccRCCs), which were segmented and radiomics were extracted. Volumetric doubling time (VDT) classified the tumours into fast-growing (VDT <365 days) or slow-growing (VDT ≥365 days). Volumetric and diametric growth analyses were compared between the groups. Multiple logistic regression and random forest classifiers were used to select the best features and models based on their correlation and predictability of VDT. RESULTS Fifty-five patients (mean age 42.2 ± 12.2 years, 27 men) with a mean time difference of 3.8 ± 2 years between the baseline and preoperative scans were studied. Twenty-five tumours were fast-growing (low VDT, i.e., <365 days), and 53 tumours were slow-growing (high VDT, i.e., ≥365 days). The median volumetric and diametric growth rates were 1.71 cm3/year and 0.31 cm/year. The best feature using univariate analysis was wavelet-HLL_glcm_ldmn (area under the receiver operating characteristic [ROC] curve [AUC] of 0.80, p<0.0001), and with the random forest classifier, it was log-sigma-0-5-mm-3D_glszm_ZonePercentage (AUC: 79). The AUC of the ROC curves using multiple logistic regression was 0.74, and with the random forest classifier was 0.73. CONCLUSION Radiomic features correlated with VDT and were able to predict the growth pattern of renal tumours in patients with VHL syndrome.
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Affiliation(s)
- S Singh
- Radiology and Imaging Sciences, Warren Grant Magnuson Clinical Center, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - F Dehghani Firouzabadi
- Radiology and Imaging Sciences, Warren Grant Magnuson Clinical Center, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - A Chaurasia
- Urologic Oncology Branch, National Cancer Institute, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - F Homayounieh
- Radiology and Imaging Sciences, Warren Grant Magnuson Clinical Center, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - M W Ball
- Urologic Oncology Branch, National Cancer Institute, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - F Huda
- Radiology and Imaging Sciences, Warren Grant Magnuson Clinical Center, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - E B Turkbey
- Radiology and Imaging Sciences, Warren Grant Magnuson Clinical Center, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - W M Linehan
- Urologic Oncology Branch, National Cancer Institute, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - A A Malayeri
- Radiology and Imaging Sciences, Warren Grant Magnuson Clinical Center, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA.
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LeCompte MC, Vidal GS, Rivera A, Sim AJ, Chaurasia A, Pereira I, Tye KE, McVorran S, Franco I. Representation Matters: Expanding the Leadership Table for All Radiation Oncology Trainees. Int J Radiat Oncol Biol Phys 2023; 116:328-333. [PMID: 37179090 DOI: 10.1016/j.ijrobp.2023.01.051] [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] [Received: 08/31/2022] [Revised: 01/22/2023] [Accepted: 01/23/2023] [Indexed: 05/15/2023]
Affiliation(s)
- Michael C LeCompte
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland.
| | - Gabriel S Vidal
- Department of Radiation Oncology, University of Oklahoma Health Science Center, Oklahoma City, Oklahoma
| | - Amanda Rivera
- Department of Radiation Oncology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York
| | - Austin J Sim
- Department of Radiation Oncology, James Cancer Hospital and Solove Research Institute, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Avinash Chaurasia
- Department of Radiation Oncology, Brooke Army Medical Center, San Antonio, Texas
| | - Ian Pereira
- Department of Radiation Oncology, Queen's University, Kingston, Ontario, Canada
| | - Karen E Tye
- Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Shauna McVorran
- Department of Radiation Oncology, Dartmouth-Hitchcock's Dartmouth Cancer Center, Lebanon, New Hampshire
| | - Idalid Franco
- Department of Radiation Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Boston, Massachusetts
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Paradis KC, Franco I, Beltrán Ponce S, Chaurasia A, Laucis AM, Venkat P, Siker M, Suneja G, Deville C, Munbodh R, Mattes MD. The Current State of Departmental Diversity, Equity, and Inclusion Efforts Within US Academic Radiation Oncology Departments. Int J Radiat Oncol Biol Phys 2023; 116:219-228. [PMID: 36306980 DOI: 10.1016/j.ijrobp.2022.06.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/13/2022] [Accepted: 06/05/2022] [Indexed: 01/31/2023]
Abstract
PURPOSE Promoting a diverse workforce of health care professionals that delivers equitable patient care is an important goal in oncology, as in all of medicine. Although most medical schools have a diversity office and associated initiatives, little is known about radiation oncology (RO) department-level efforts to promote diversity, equity, and inclusion (DEI). We describe the current state of DEI leadership and initiatives in RO departments in the US to guide future policies and programs. METHODS AND MATERIALS A total of 124 US RO departments affiliated with a medical school were contacted to identify departmental DEI leadership. Identified DEI leaders were asked to complete an anonymous survey assessing characteristics of their departmental DEI leadership, committee/organizational structure, activities, and perceived barriers to, and effect of, their work. Descriptive statistics are reported. RESULTS Among 85 RO departments that responded (68.5% response rate), 48 (56.5%) reported having a departmental DEI leader. Thirty-four DEI leaders completed the survey (70.8%). Of those who answered each survey question, most DEI leaders were assistant or associate professors (n = 24, 82.8%), women (n = 19, 73.1%), and identified with at least one non-White race or Hispanic ethnicity (n = 15, 53.6%). Nineteen (57.6%) had an associated departmental DEI committee; with 10 of these starting in 2020 or later. Few DEI leaders had administrative support (38.2%), funding (29.4%), protected time (23.5%), or increased compensation for added duties Fifteen (50.0%) believed their DEI-focused efforts were considered for promotion. The most reported initiatives included offering programming/education, supporting students from backgrounds underrepresented in medicine, improving recruitment practices/hiring, and implementing pipeline/pathway projects. The perceived impact of DEI initiatives included an increased culture of respect (89.7%), improved health care disparity awareness (75.9%), and improved systemic/structural racism awareness (79.3%). CONCLUSIONS Departmental DEI efforts are increasingly common within RO, however, the structure, resources, and recognition associated with DEI work are variable. Additional dedicated resources and recognition for these efforts will help ensure a culture of inclusive excellence for the RO workforce and patients.
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Affiliation(s)
- Kelly C Paradis
- Department of Radiation Oncology, Michigan Medicine, Ann Arbor, Michigan.
| | - Idalid Franco
- Department of Radiation Oncology, Brigham and Women's Hospital, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Sara Beltrán Ponce
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Avinash Chaurasia
- National Capital Consortium Radiation Oncology Residency, Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | | | - Puja Venkat
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, California
| | - Malika Siker
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Gita Suneja
- Department of Radiation Oncology, University of Utah, Salt Lake City, Utah
| | - Curtiland Deville
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University, Baltimore, Maryland
| | - Reshma Munbodh
- Department of Radiation Oncology, Alpert Medical School of Brown University, Providence, Rhode Island
| | - Malcolm D Mattes
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ
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Varshney N, Kashyap D, Behra SK, Saini V, Chaurasia A, Kumar S, Jha HC. Predictive profiling of gram-negative antibiotics in CagA oncoprotein inactivation: a molecular dynamics simulation approach. SAR QSAR Environ Res 2023; 34:501-521. [PMID: 37462112 DOI: 10.1080/1062936x.2023.2230876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/24/2023] [Indexed: 07/20/2023]
Abstract
Gastric cancer (GC) is the fifth most prevalent form of cancer worldwide. CagA - positive Helicobacter pylori infects more than 60% of the human population. Moreover, chronic infection of CagA-positive H. pylori can directly affect GC incidence. In the current study, we have repurposed FDA-approved antibiotics that are viable alternatives to current regimens and can potentially be used as combination therapy against the CagA of H. pylori. The 100 FDA-approved gram negative antibiotics were screened against CagA protein using the AutoDock 4.2 tool. Further, top nine compounds were selected based on higher binding affinity with CagA. The trajectory analysis of MD simulations reflected that binding of these drugs with CagA stabilizes the system. Nonetheless, atomic density map and principal component analysis also support the notion of stable binding of antibiotics to the protein. The residues ASP96, GLN100, PRO184, and THR185 of compound cefpiramide, doxycycline, delafloxacin, metacycline, oxytetracycline, and ertapenem were involved in the binding with CagA protein. These residues are crucial for the CagA that aids in entry or pathogenesis of the bacterium. The screened FDA-approved antibiotics have a potential druggability to inhibit CagA and reduce the progression of H. pylori borne diseases.
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Affiliation(s)
- N Varshney
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| | - D Kashyap
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| | - S K Behra
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Ahmedabad, Gandhinagar, India
| | - V Saini
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| | - A Chaurasia
- Division of Crop Protection, ICAR -Indian Institute of Vegetable Research, Varanasi, India
| | - S Kumar
- Division of Agricultural Bioinformatics (CABIN), ICAR-Indian Agricultural Statistics Research Institute (IASRI), Delhi, India
| | - H C Jha
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
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5
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Nagrale DT, Chaurasia A, Kumar S, Gawande SP, Hiremani NS, Shankar R, Gokte-Narkhedkar N, Renu, Prasad YG. PGPR: the treasure of multifarious beneficial microorganisms for nutrient mobilization, pest biocontrol and plant growth promotion in field crops. World J Microbiol Biotechnol 2023; 39:100. [PMID: 36792799 DOI: 10.1007/s11274-023-03536-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 01/30/2023] [Indexed: 02/17/2023]
Abstract
Plant growth-promoting rhizobacteria (PGPR) have multifarious beneficial activities for plant growth promotion; act as source of metabolites, enzymes, nutrient mobilization, biological control of pests, induction of disease resistance vis-a-vis bioremediation potentials by phytoextraction and detoxification of heavy metals, pollutants and pesticides. Agrochemicals and synthetic pesticides are currently being utilized widely in all major field crops, thereby adversely affecting human and animal health, and posing serious threats to the environments. Beneficial microorganisms like PGPR could potentially substitute and supplement the toxic chemicals and pesticides with promising application in organic farming leading to sustainable agriculture practices and bioremediation of heavy metal contaminated sites. Among field crops limited bio-formulations have been prepared till now by utilization of PGPR strains having plant growth promotion, metabolites, enzymes, nutrient mobilization and biocontrol activities. The present review contributes comprehensive description of PGPR applications in field crops including commercial, oilseeds, leguminous and cereal crops to further extend the utilization of these potent groups of beneficial microorganisms so that even higher level of crop productivity and quality produce of field crops could be achieved. PGPR and bacteria based commercialized bio-formulations available worldwide for its application in the field crops have been compiled in this review which can be a substitute for the harmful synthetic chemicals. The current knowledge gap and potential target areas for future research have also been projected.
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Affiliation(s)
- D T Nagrale
- ICAR-Central Institute for Cotton Research, Nagpur, Maharashtra, 440010, India.
| | - A Chaurasia
- ICAR-Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, 221305, India.
| | - S Kumar
- Division of Agricultural Bioinformatics, ICAR-Indian Agricultural Statistics Research Institute, Library Avenue, Pusa, New Delhi, 110012, India
| | - S P Gawande
- ICAR-Central Institute for Cotton Research, Nagpur, Maharashtra, 440010, India
| | - N S Hiremani
- ICAR-Central Institute for Cotton Research, Nagpur, Maharashtra, 440010, India
| | - Raja Shankar
- ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bengaluru, 560089, India
| | - N Gokte-Narkhedkar
- ICAR-Central Institute for Cotton Research, Nagpur, Maharashtra, 440010, India
| | - Renu
- Indian Council of Agricultural Research, Krishi Bhawan, New Delhi, 110001, India
| | - Y G Prasad
- ICAR-Central Institute for Cotton Research, Nagpur, Maharashtra, 440010, India
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6
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Borg-Bartolo R, Roccuzzo A, Molinero-Mourelle P, Schimmel M, Gambetta-Tessini K, Chaurasia A, Koca-Ünsal RB, Tennert C, Giacaman R, Campus G. Global prevalence of edentulism and dental caries in middle-aged and elderly persons: A systematic review and meta-analysis. J Dent 2022; 127:104335. [PMID: 36265526 DOI: 10.1016/j.jdent.2022.104335] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/16/2022] [Accepted: 10/14/2022] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE The aim of the study was to analyze data collected from studies worldwide on the prevalence of edentulism and dental caries, in community-dwellers aged ≥ 45 years. DATA Inclusion criteria; participants aged ≥ 45 years, community-dwellers. Exclusion criteria; participants aged < 45 years, in nursing homes, data obtained from dental clinics or pre-2005. The quality assessment tool by The National Heart, Lung and Blood Institute for Observational Cohort and Cross-sectional studies was used. Meta-analysis using the random-effects model (95% confidence interval) was done with data on participants who were edentulous and/or had active dental caries and stratified by regions of the world, age and Gross National Income per capita. Limitations in the data arose from several factors such as design of the studies included differences in socioeconomic status and access to health care among different countries. SOURCES Embase, MEDLINE via Pubmed and Scopus, manual searches, from January 2016, restricted to English. Experts from different countries were contacted to identify National oral health surveys (NOHS) conducted from 2010 onwards. STUDY SELECTION Eighty-six papers and seventeen NOHS were selected for data extraction. Majority of the studies (n = 69) were cross-sectional and of fair quality. 1.1%-70%, 4.9% - 98% prevalence of edentulism and dental caries, respectively. 22%, 45% estimated random-effects pooled prevalence of edentulism and dental caries, respectively. CONCLUSIONS Within the limitations of this study, the findings indicate that untreated dental caries and tooth loss are prevalent on a global level with wide variations among different countries, age groups and socioeconomic status. CLINICAL SIGNIFICANCE The findings demonstrate the reality of the new cohort of older adults, with higher tooth retention implying more dental caries incidence and the need for different care strategies to ensure better oral health. Large variations and difficulty in making comparisons among different countries highlight the need for more standardized, regular research.
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Affiliation(s)
- R Borg-Bartolo
- Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, Freiburgstrasse 7, Bern 3012, Switzerland.
| | - A Roccuzzo
- Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, Freiburgstrasse 7, Bern 3012, Switzerland; Department of Periodontology, School of Dental Medicine, University of Bern, Switzerland.
| | - P Molinero-Mourelle
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - M Schimmel
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland; Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - K Gambetta-Tessini
- Cariology Unit, Department of Oral Rehabilitation, University of Talca, Chile
| | - A Chaurasia
- Faculty of Dental Sciences, King George's Medical, India
| | - R B Koca-Ünsal
- Department of Periodontology, Faculty of Dentistry, University of Kyrenia, Cyprus
| | - C Tennert
- Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, Freiburgstrasse 7, Bern 3012, Switzerland
| | - R Giacaman
- Cariology Unit, Department of Oral Rehabilitation, University of Talca, Chile
| | - G Campus
- Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, Freiburgstrasse 7, Bern 3012, Switzerland; Department of Surgery, Microsurgery and Medicine Sciences, School of Dentistry, University of Sassari, Italy.
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7
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Schwendicke F, Cejudo Grano de Oro J, Garcia Cantu A, Meyer-Lueckel H, Chaurasia A, Krois J. Artificial Intelligence for Caries Detection: Value of Data and Information. J Dent Res 2022; 101:1350-1356. [PMID: 35996332 PMCID: PMC9516598 DOI: 10.1177/00220345221113756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
If increasing practitioners’ diagnostic accuracy, medical artificial intelligence (AI)
may lead to better treatment decisions at lower costs, while uncertainty remains around
the resulting cost-effectiveness. In the present study, we assessed how enlarging the data
set used for training an AI for caries detection on bitewings affects cost-effectiveness
and also determined the value of information by reducing the uncertainty around other
input parameters (namely, the costs of AI and the population’s caries risk profile). We
employed a convolutional neural network and trained it on 10%, 25%, 50%, or 100% of a
labeled data set containing 29,011 teeth without and 19,760 teeth with caries lesions
stemming from bitewing radiographs. We employed an established health economic modeling
and analytical framework to quantify cost-effectiveness and value of information. We
adopted a mixed public–private payer perspective in German health care; the health outcome
was tooth retention years. A Markov model, allowing to follow posterior teeth over the
lifetime of an initially 12-y-old individual, and Monte Carlo microsimulations were
employed. With an increasing amount of data used to train the AI sensitivity and
specificity increased nonlinearly, increasing the data set from 10% to 25% had the largest
impact on accuracy and, consequently, cost-effectiveness. In the base-case scenario, AI
was more effective (tooth retention for a mean [2.5%–97.5%] 62.8 [59.2–65.5] y) and less
costly (378 [284–499] euros) than dentists without AI (60.4 [55.8–64.4] y; 419 [270–593]
euros), with considerable uncertainty. The economic value of reducing the uncertainty
around AI’s accuracy or costs was limited, while information on the population’s risk
profile was more relevant. When developing dental AI, informed choices about the data set
size may be recommended, and research toward individualized application of AI for caries
detection seems warranted to optimize cost-effectiveness.
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Affiliation(s)
- F Schwendicke
- Department of Oral Diagnostics, Digital Health and Health Services Research, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - J Cejudo Grano de Oro
- Department of Oral Diagnostics, Digital Health and Health Services Research, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - A Garcia Cantu
- Department of Oral Diagnostics, Digital Health and Health Services Research, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - H Meyer-Lueckel
- Department of Restorative, Preventive and Pediatric Dentistry, zmk bern, University of Bern, Bern, Switzerland
| | - A Chaurasia
- Department of Oral Medicine and Radiology, King George's Medical University, Lucknow, India
| | - J Krois
- Department of Oral Diagnostics, Digital Health and Health Services Research, Charité-Universitätsmedizin Berlin, Berlin, Germany
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8
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Oehrlein N, Streicher SA, Kuo HC, Chaurasia A, McFadden J, Nousome D, Chen Y, Stroup SP, Musser J, Brand T, Porter C, Rosner IL, Chesnut GT, Onofaro KC, Rebbeck TR, D'Amico A, Lu-Yao G, Cullen J. Race-specific prostate cancer outcomes in a cohort of military health care beneficiaries undergoing surgery: 1990-2017. Cancer Med 2022; 11:4354-4365. [PMID: 35638719 PMCID: PMC9678085 DOI: 10.1002/cam4.4787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 03/31/2022] [Accepted: 04/21/2022] [Indexed: 12/24/2022] Open
Abstract
Background There is substantial variability in prostate cancer (PCa) mortality rates across Caucasian American (CA), African American (AA), Asian, and Hispanic men; however, these estimates are unable to disentangle race or ethnicity from confounding factors. The current study explores survival differences in long‐term PCa outcomes between self‐reported AA and CA men, and examines clinicopathologic features across self‐reported CA, AA, Asian, and Hispanic men. Methods This retrospective cohort study utilized the Center for Prostate Disease Research (CPDR) Multi‐center National Database from 1990 to 2017. Subjects were consented at military treatment facilities nationwide. AA, CA, Asian, or Hispanic men who underwent radical prostatectomy (RP) for localized PCa within the first year of diagnosis were included in the analyses. Time from RP to biochemical recurrence (BCR), BCR to metastasis, and metastasis to overall death were evaluated using Kaplan–Meier unadjusted estimation curves and adjusted Cox proportional hazards regression. Results This study included 7067 men, of whom 5155 (73%) were CA, 1468 (21%) were AA, 237 (3%) were Asian, and 207 (3%) were Hispanic. AA men had a significantly decreased time from RP to BCR compared to CA men (HR = 1.25, 95% CI = 1.06–1.48, p = 0.01); however, no difference was observed between AA and CA men for a time from BCR to metastasis (HR = 0.73, 95% CI = 0.39–1.33, p = 0.302) and time from metastasis to overall death (HR = 0.67, 95% CI = 0.36–1.26, p = 0.213). Conclusions In an equal access health care setting, AA men had a shorter survival time from RP to BCR, but comparable survival time from BCR to metastasis and metastasis to overall death.
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Affiliation(s)
- Nathan Oehrlein
- Urology Service, Department of Surgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Samantha A Streicher
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
| | - Huai-Ching Kuo
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA.,Infectious Disease Clinical Research Program, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - Avinash Chaurasia
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,Department of Radiation Oncology, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Jacob McFadden
- Urology Service, Department of Surgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Darryl Nousome
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA.,Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, Maryland, USA
| | - Yongmei Chen
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA.,Eli Lilly and Company, Indianapolis, Indiana, USA
| | - Sean P Stroup
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,Department of Urology, Naval Medical Center San Diego, San Diego, California, USA
| | - John Musser
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,Tripler Army Medical Center, Honolulu, Hawaii, USA
| | - Timothy Brand
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,Madigan Army Medical Center, Tacoma, WA, USA
| | - Christopher Porter
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,Virginia Mason Medical Center, Seattle, WA, USA
| | - Inger L Rosner
- Urology Service, Department of Surgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA.,Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,Department of Medical Oncology, Sidney Kimmel Cancer Center at Jefferson, Sidney Kimmel Medical College, Philadelphia, Pennsylvania, USA
| | - Gregory T Chesnut
- Urology Service, Department of Surgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA.,Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - Kayla C Onofaro
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA.,Department of Urology, Naval Medical Center San Diego, San Diego, California, USA
| | | | - Anthony D'Amico
- Division of Population Sciences, Dana Farber Cancer Institute and Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, Massachusetts, USA
| | - Grace Lu-Yao
- Department of Radiation Oncology, Brigham and Women's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA.,Sidney Kimmel Cancer Center at Jefferson, Philadelphia, Pennsylvania, USA.,Jefferson College of Population Health, Philadelphia, Pennsylvania, USA
| | - Jennifer Cullen
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.,The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA.,Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, Ohio, USA.,Case Comprehensive Cancer Center, Cleveland, Ohio, USA
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Schwendicke F, Rossi JG, Göstemeyer G, Elhennawy K, Cantu AG, Gaudin R, Chaurasia A, Gehrung S, Krois J. Cost-effectiveness of Artificial Intelligence for Proximal Caries Detection. J Dent Res 2020; 100:369-376. [PMID: 33198554 PMCID: PMC7985854 DOI: 10.1177/0022034520972335] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Artificial intelligence (AI) can assist dentists in image assessment, for example, caries detection. The wider health and cost impact of employing AI for dental diagnostics has not yet been evaluated. We compared the cost-effectiveness of proximal caries detection on bitewing radiographs with versus without AI. U-Net, a fully convolutional neural network, had been trained, validated, and tested on 3,293, 252, and 141 bitewing radiographs, respectively, on which 4 experienced dentists had marked carious lesions (reference test). Lesions were stratified for initial lesions (E1/E2/D1, presumed noncavitated, receiving caries infiltration if detected) and advanced lesions (D2/D3, presumed cavitated, receiving restorative care if detected). A Markov model was used to simulate the consequences of true- and false-positive and true- and false-negative detections, as well as the subsequent decisions over the lifetime of patients. A German mixed-payers perspective was adopted. Our health outcome was tooth retention years. Costs were measured in 2020 euro. Monte-Carlo microsimulations and univariate and probabilistic sensitivity analyses were conducted. The incremental cost-effectiveness ratio (ICER) and the cost-effectiveness acceptability at different willingness-to-pay thresholds were quantified. AI showed an accuracy of 0.80; dentists’ mean accuracy was significantly lower at 0.71 (minimum–maximum: 0.61–0.78, P < 0.05). AI was significantly more sensitive than dentists (0.75 vs. 0.36 [0.19–0.65]; P = 0.006), while its specificity was not significantly lower (0.83 vs. 0.91 [0.69–0.98]; P > 0.05). In the base-case scenario, AI was more effective (tooth retention for a mean 64 [2.5%–97.5%: 61–65] y) and less costly (298 [244–367] euro) than assessment without AI (62 [59–64] y; 322 [257–394] euro). The ICER was −13.9 euro/y (i.e., AI saved money at higher effectiveness). In the majority (>77%) of all cases, AI was less costly and more effective. Applying AI for caries detection is likely to be cost-effective, mainly as fewer lesions remain undetected. Notably, this cost-effectiveness requires dentists to manage detected early lesions nonrestoratively.
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Affiliation(s)
- F Schwendicke
- Department of Oral Diagnostics, Digital Health and Health Services Research, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - J G Rossi
- Department of Oral Diagnostics, Digital Health and Health Services Research, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - G Göstemeyer
- Department of Operative and Preventive Dentistry, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - K Elhennawy
- Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - A G Cantu
- Department of Oral Diagnostics, Digital Health and Health Services Research, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - R Gaudin
- Department of Oral and Maxillofacial Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - A Chaurasia
- Department of Oral Medicine and Radiology, King George's Medical University, Lucknow, India
| | - S Gehrung
- Department of Oral Diagnostics, Digital Health and Health Services Research, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - J Krois
- Department of Oral Diagnostics, Digital Health and Health Services Research, Charité-Universitätsmedizin Berlin, Berlin, Germany
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Caumont F, Conti G, Hurwitz LM, Kuo C, Levie KE, Badiozamani K, Frankel JK, Flores JP, Brand TC, Chaurasia A, Rosner IL, Stroup SP, Musser JE, Cullen J, Porter CR. A prospective analysis of health-related quality of life in intermediate and high-risk prostate cancer patients managed with intensity modulated radiation therapy, with vs. without hormonal therapy. Urol Oncol 2020; 38:794.e1-794.e9. [PMID: 32139288 DOI: 10.1016/j.urolonc.2020.02.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 01/21/2020] [Accepted: 02/05/2020] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Combined radiotherapy and hormonal treatment are recommended for intermediate- and high-risk prostate cancer (CaP). This study compared the long-term effects on health-related quality of life (HRQoL) of intermediate- and high-risk CaP patients managed with radiation therapy (RT) with vs. without hormone therapy (HT). METHODS Patients with intermediate- and high-risk CaP enrolled in the Center for Prostate Disease Research diagnosed from 2007 to 2017 were included. EPIC and SF-36 questionnaires were completed and HRQoL scores were compared for patients receiving RT vs. RT + HT at baseline (pretreatment), 6, 12, 24, 36, 48, and 60 months after CaP diagnosis. Longitudinal patterns of change in HRQoL were modeled using linear regression models, adjusting for baseline HRQoL, age at CaP diagnosis, race, comorbidities, National Comprehensive Cancer Network (NCCN) risk stratum, time to treatment, and follow-up time. RESULTS Of 164 patients, 93 (56.7%) received RT alone and 71 (43.3%) received RT + HT. Both groups reported comparable baseline HRQoL. Patients receiving RT+HT were more likely to be NCCN high risk as compared to those receiving only RT. The RT + HT patients experienced worse sexual function, hormonal function, and hormonal bother than those who only received RT; however, HRQoL recovered over time for the RT + HT group. No significant differences were observed between groups in urinary and bowel domains or SF-36 mental and physical scores. CONCLUSION Combined RT + HT treatment was associated with temporary lower scores in sexual and hormonal HRQoL compared with RT only. Intermediate- and high-risk CaP patients should be counseled about the possible declines in HRQoL associated with HT.
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Affiliation(s)
| | - Galen Conti
- Department of Defense, Center for Prostate Disease Research, Bethesda, MD; Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD; Henry M. Jackson Foundation, Bethesda, MD
| | - Lauren M Hurwitz
- Department of Defense, Center for Prostate Disease Research, Bethesda, MD; Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD; Henry M. Jackson Foundation, Bethesda, MD
| | - Claire Kuo
- Department of Defense, Center for Prostate Disease Research, Bethesda, MD; Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD; Henry M. Jackson Foundation, Bethesda, MD
| | - Katherine E Levie
- Virginia Mason Medical Center, Seattle, WA; Department of Defense, Center for Prostate Disease Research, Bethesda, MD; Henry M. Jackson Foundation, Bethesda, MD
| | | | | | | | - Timothy C Brand
- Department of Defense, Center for Prostate Disease Research, Bethesda, MD; Madigan Army Medical Center, Tacoma, WA
| | - Avinash Chaurasia
- Department of Defense, Center for Prostate Disease Research, Bethesda, MD; Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD
| | - Inger L Rosner
- Department of Defense, Center for Prostate Disease Research, Bethesda, MD; Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD
| | - Sean P Stroup
- Department of Defense, Center for Prostate Disease Research, Bethesda, MD; Naval Medical Center, San Diego, CA
| | - John E Musser
- Department of Defense, Center for Prostate Disease Research, Bethesda, MD; Tripler Army Medical Center, Honolulu, HI
| | - Jennifer Cullen
- Department of Defense, Center for Prostate Disease Research, Bethesda, MD; Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD; Henry M. Jackson Foundation, Bethesda, MD.
| | - Christopher R Porter
- Virginia Mason Medical Center, Seattle, WA; Department of Defense, Center for Prostate Disease Research, Bethesda, MD
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Gilfoyle M, Garcia J, Chaurasia A, Oremus M. Perceived susceptibility to developing cancer and mammography screening behaviour: a cross-sectional analysis of Alberta's Tomorrow Project. Public Health 2019; 177:135-142. [DOI: 10.1016/j.puhe.2019.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 06/28/2019] [Accepted: 08/08/2019] [Indexed: 10/25/2022]
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Smith C, Chaurasia A, Harmon S, Rowe L, Greer M, Valle L, Choyke P, Citrin D, Turkbey B. Associations between MRI Findings and Urinary Tract Symptoms after IMRT for Prostate Cancer. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.274] [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: 10/28/2022]
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Chaudhuri S, Gupta S, Kumar N, Panda D, Radia A, Chaurasia A, Kumar N. Nonsmoked Tobacco Addiction Playing a Major Role in Oral Mucosal Changes in Northern Indian Population Over Smoked and Alcohol Use. J Glob Oncol 2018. [DOI: 10.1200/jgo.18.79000] [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: 11/20/2022] Open
Abstract
Background: Oral cavity is prone for myriad of changes with advancing age as well result of environmental and life style related factors like consumption of tobacco (smoke or smokeless) and alcohol. Aim: The aim of this study was to quantify and compare the association of oral mucosal changes (OMC) with nonsmoked tobacco over smoked tobacco and alcohol. Methods: Data of 11,145 subjects from 106 health screening camps, organized in Uttar Pradesh and Rajasthan between April 2015 to June 2017 was analyzed to unveil and determine the mode of addiction and prevalence of OMC. Bivariate and multivariable models were tested for comparison and identification of factors associated with an increasing risk of developing OMC. Results: The primary symptoms were mouth ulcer in 5.6% and trismus (1.0%). The overall proportions of tobacco chewing, smoking and alcohol addiction were 12.5%, 10.7% and 2.5% respectively. The highest prevalence of smoking noted in the age-group 55-64 years (14.4%), for tobacco chewing and alcohol consumption in the age-group 25-34 years was 15.6% and 4.2% respectively ( P < 0.001). The prevalence of mouth ulcers were 20.7% among smokers and 27.8% among tobacco chewers ( P < 0.001) while the percentage of trismus 26.1% among smokers and 53.0% among tobacco chewers ( P < 0.001). Conclusion: Results of this study can be used for creating awareness among the population regarding the hazards of tobacco use. More number of studies needs to be conducted all over India to understand the prevalence and the biologic behavior of these oral premalignant lesions and its progression to invasive diseases.
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Affiliation(s)
| | - S.K. Gupta
- Nayati Medicity, Oncology, Mathura, India
| | - N. Kumar
- Nayati Medicity, Oncology, Mathura, India
| | - D. Panda
- Nayati Medicity, Oncology, Mathura, India
| | - A. Radia
- Nayati Medicity, Oncology, Mathura, India
| | | | - N. Kumar
- Nayati Medicity, Oncology, Mathura, India
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Chaurasia A, Padmanabhana S, Das P, Aravind J. A rare case of synchronous association of chromophobe renal cell carcinoma with urothelial carcinoma of urinary bladder. African Journal of Urology 2017. [DOI: 10.1016/j.afju.2016.08.002] [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] Open
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15
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Wei R, Chaurasia A, Yu S, Lall C, Klempner SJ. Focal Hepatic Fluorodeoxyglucose Uptake Mimics Liver Metastasis Following External Beam Radiation for Gastroesophageal Cancers: A Case and Review of the Literature. J Clin Imaging Sci 2016; 6:30. [PMID: 27625896 PMCID: PMC4995847 DOI: 10.4103/2156-7514.188089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Accepted: 06/30/2016] [Indexed: 12/04/2022] Open
Abstract
Patients with locally advanced gastroesophageal cancers frequently undergo concurrent chemotherapy and radiation (CRT). 18-fluorodeoxyglucose-positron emission tomography (18FDG-PET) in combination with computed tomography is used for disease staging and assessing response to therapy. 18FDG-PET interpretation is subject to confounding influences including infectious/inflammatory conditions, serum glucose, and concurrent medications. Radiotherapy induces tissue damage, which may be associated with FDG-avidity; however, few reports have described the focal areas of hepatic uptake following concurrent chemoradiation (CRT). Distinguishing hepatic FDG uptake from disease progression represents an important clinical scenario. Here, we present two cases of unexpected FDG uptake in the liver after CRT and review the literature describing incidental liver uptake on FDG-PET.
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Affiliation(s)
- Randy Wei
- Department of Radiation Oncology, University of California, Irvine, Orange, USA
| | - Avinash Chaurasia
- Department of Radiation Oncology, University of California, Irvine, Orange, USA
| | - Suhong Yu
- Department of Radiation Oncology, University of California, Irvine, Orange, USA
| | - Chandana Lall
- Department of Radiological Sciences, University of California, Irvine, Orange, USA
| | - Samuel J Klempner
- The Angeles Clinic and Research Institute, Los Angeles, CA, USA; Cedars-Sinai Medical Center, Los Angeles, CA, USA
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16
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Schwarzkopf R, Bauer A, Chaurasia A, Hall AM, Zurakowski D, Scott RD. Distal femoral aspect ratios throughout childhood: an MRI study of normative data and sex comparisons. J Pediatr Orthop B 2016; 25:241-4. [PMID: 26895290 DOI: 10.1097/bpb.0000000000000279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The ratio of anteroposterior (AP) to medial-lateral (ML) dimensions of the distal femur in adults differs by sex. The average AP/ML dimension ratios are 0.82 for females and 0.79 for males. How and when this difference develops is not yet understood. In this study, the distal femoral dimensions and physeal development of 345 participants younger than 21 years of age were evaluated by MRI. Regression analysis indicated a significant increase in the AP/ML ratio with increasing age for both sexes. In girls, the ratio increased from 0.63 at ages 0-5 years to 0.76 at 15-20 years. In boys, the ratio increased from 0.61 to 0.73 over the same age groups. Female distal femur dimensions are narrower than that of males from birth. Throughout childhood, both sexes show gradual increases in AP/ML ratios. After closure of the physes, the AP/ML ratio in children approaches adult values, with females continuing to have relatively narrower dimensions than males.
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Affiliation(s)
- Ran Schwarzkopf
- aDepartment of Orthopaedic Surgery, NYU Langone Medical Center Hospital For Joint Diseases, Division of Adult Reconstruction, New York, New York bDepartment of Orthopaedic Surgery, Shriners Hospital for Children Northern California, Sacramento, California cBoston Children's Hospital dNew England Baptist Hospital, Boston, Massachusetts, USA
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Abstract
We present a case of tuberculosis of the cervix due to the rarity of this condition and its clinical resemblance to a dreadful disease, “carcinoma of cervix.”
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Affiliation(s)
- P K Garg
- Department of Surgery, University College of Medical Sciences and Guru Teg Bahadur Hospital, University of Delhi, Delhi, India.
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19
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Lahoti S, Gokhale S, Chaurasia A, Caplan L. Thrombolysis in Ischemic Stroke with No Arterial Occlusions (P03.001). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p03.001] [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: 11/15/2022] Open
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20
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Lahoti S, Siddiqi N, Gokhale S, Chaurasia A, Hastak S. A Study of Factors Causing Delay in Hospital Arrival after Acute Stroke (P03.008). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p03.008] [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: 11/15/2022] Open
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21
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Chattopadhyay P, Pandey A, Goyary D, Chaurasia A, Singh L, Veer V. Technetium-99m-labeled deoxynivalenol from Fusarium mycotoxin alters organ toxicity in BALB/c mice by oral and intravenous route. J Venom Anim Toxins Incl Trop Dis 2012. [DOI: 10.1590/s1678-91992012000300002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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22
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Kane GR, Mundra P, Chaurasia A, Kaneria V, Pahlajani DB, Mehta AB. Coronary artery perforation during coronary angioplasty. Indian Heart J 1997; 49:73-5. [PMID: 9130430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- G R Kane
- Department of Cardiology, LTMMC & LTMG Hospital, Mumbai
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23
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Chaurasia A. Informing, educating and communicating with people iodine deficiency disorders elimination drive in Madhya Pradesh. Indian J Public Health 1995; 39:160-3. [PMID: 8690504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- A Chaurasia
- Rajiv Gandhi Mission For Elimination of Iodine Deficiency Disorders, Government of Madhya Pradesh, Bhopal
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Abstract
By introducing the lubrication theory to the squeezing flow of the plasma between the cell and the vessel wall, an analysis of the flow and the nutritional transport within the tissue has been presented in this paper. Cells are assumed to flow in a single file, with axi-symmetric shapes. The concentration profiles of the dissolved nutrients within the tissue have been drawn under the assumption of the uniform distribution in the capillary due to continuous mixing in bolus flows between the 2 adjacent cells in the capillary. The analysis concludes that, in diseased state, the penetration depth for the substance in the tissue decreases and the cells in the deeper region do not get sufficient nutrition for their survival and they die out.
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Affiliation(s)
- P N Tandon
- Department of Mathematics, University Brunei Darussalam
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25
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Chaurasia A. A parametric investigation of mortality transition in India: 1970-89. J Inst Econ Res 1993; 28:11-21. [PMID: 12347599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
"This paper attempts to analyze mortality transition in India during [the] 1970s and 1980s through the modelling of the age pattern of mortality by applying the Heligman-Pollard model mortality schedule. The analysis reveals that mortality transition in India has not been uniform in all the age [or sex] groups....Middle-life mortality has been found to be more or less unchanged during the period under reference. Implications of the age pattern of mortality transition [on] health policy [are also] discussed."
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Chaurasia A. Regional variations in age pattern of mortality in India. J Inst Econ Res 1992; 27:1-11. [PMID: 12319424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
"Using the cluster analysis technique and Heligman-Pollard mortality model, the present paper analyses the regional variations in age pattern of mortality in India around 1986-88. The paper identifies three broad patterns of age-specific mortality rates in the country--the Central-India Pattern; the South-India Pattern; and the North-West India Pattern. In addition, Kerala has its own typical pattern of age-specific mortality. Similarly, Assam (Males) and Jammu and Kashmir (Males) have their own typical pattern of age-specific mortality rates while the same is also true for Rajasthan (Females). The implications of age patterns of mortality identified in this analysis have also been discussed."
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Porwar S, Chaurasia A, Agrawal BM. Family welfare programme in India--the child survival context. Indian J Public Health 1992; 36:68-72. [PMID: 1303992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- S Porwar
- PSM Dept. G.R. Medical College, Gwalior
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Abstract
A study of the lubrication mechanism occurring in knee joint replacement is presented. The idealized model has been shown to produce results consistent with those in normal situations. In the present problem viscoelastic fluid has been considered to represent the synovial fluid in the fluid-film region and purely viscous Newtonian fluid in the porous layer due to filtration. Because of exact solution not being possible for the governing non-linear partial differential equations, the perturbation method has been used to obtain approximate solutions. The effect of an increase in the viscoelastic parameter of the lubricant is similar to that of an increase in concentration of hyaluronic acid molecules in synovial fluid. Important deductions are made for load carrying capacity and coefficient of friction and it has been shown that the slip velocity plays an important role in maintaining the self-adjusting nature of human joints.
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Affiliation(s)
- P N Tandon
- Department of Mathematics, Harcourt Butler Technological Institute, Kanpur, India
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Verma KK, Jain A, Verma A, Chaurasia A. Spectrophotometric determination of ascorbic acid in pharmaceuticals by background correction and flow injection. Analyst 1991; 116:641-5. [PMID: 1928730 DOI: 10.1039/an9911600641] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [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: 12/29/2022]
Abstract
Background correction has been shown to be an effective and indispensable modification in the spectrophotometric determination of ascorbic acid. The decomposition of ascorbic acid in pharmaceutical samples was carried out by incubation with sodium hydroxide to give products that were insensitive to ultraviolet light. The rapid oxidation in air of ascorbic acid, especially in dilute solutions, was avoided by the use of the flow injection principle for spectrophotometric determination and by employing a carrier stream of an anti-oxidizing nature consisting of 6 micrograms ml(-1) of 2-mercaptoethanol in 0.25% sulphuric acid. The optimized method with a single channel manifold made use of a carrier stream flow rate of 1.1 ml min(-1), an injection volume of 50 microl, a delay coil of 50 cm (0.5 mm i.d.) and detection at 245 nm. The throughput was at least 180 injections h(-1). The proposed flow injection method yielded results for the analysis of 0-20 micrograms ml(-1) of ascorbic acid that were 99-102% (relative standard deviation 0.6% or better) in agreement with those produced by comparable methods involving titration with iodine, chloranil or 2,6-dichlorophenolindophenol [4-(2,6-dichloro-4-hydroxyphenylimino)cyclohexa-2,5-dieno ne], and high-performance liquid chromatography. When the agreement was not good (as low as 14% with respect to the method being compared), this was traced to the presence of substances which are known to interfere in one or other of the methods of comparison.
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Affiliation(s)
- K K Verma
- Department of Chemistry, Rani Durgavati University, Madhya Pradesh, India
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