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Coffin T, Wray J, Sah R, Maj M, Nath R, Nauhria S, Maity S, Nauhria S. A Review and Meta-Analysis of the Prevalence and Health Impact of Polycystic Ovary Syndrome Among Medical and Dental Students. Cureus 2023; 15:e40141. [PMID: 37304389 PMCID: PMC10256275 DOI: 10.7759/cureus.40141] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/06/2023] [Indexed: 06/13/2023] Open
Abstract
Women currently comprise the majority of students graduating from medical school and face unique stressors not seen with their male counterparts. In particular, during their medical education, women with polycystic ovary syndrome (PCOS) experience symptoms of the disorder, which strongly impact both their academic and social lives. This in turn influences their academic and professional future. Although women as medical professionals, in general, are happy with their careers, awareness, and understanding on the part of medical educators will definitely be helpful to women medical students in their path to being successful medical professionals. The first objective of our current study is to find the prevalence of PCOS in medical and dental students. The second objective is to find the academic and health impacts of PCOS and what type of interventions are being adopted to relieve the symptoms. Using the keywords such as "PCOS," "medical students," and "dental students", the search engines PubMed, Embase, and Scopus were used to retrieve relevant articles published from 2020 to 2022. After removing the duplicates, 11 prospective cross-sectional studies were utilized for qualitative and quantitative analysis. The pooled prevalence of 2,206 female medical students diagnosed with PCOS was 24.7%. The students in the various studies were aware of their PCOS diagnosis and were taking therapeutic medications. The most common associated complications reported were BMI abnormalities, abnormal hair growth, and acne, along with other complications such as stress and poor academic and social life. The majority also had significant family histories of concurrent clinical conditions such as diabetes, hypertension, and other menstrual abnormalities. Considering the huge impact of PCOS, medical educators, policymakers, and all stakeholders should take proactive measures to accommodate students' needs and bridge the social gap. Special awareness of needed lifestyle changes should be a part of the medical education curriculum for an inclusive educational environment, as it will minimize the gender discrepancy in academic satisfaction and professional life.
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Affiliation(s)
- Tamara Coffin
- Medicine, St. George's University School of Medicine, St. George's, GRD
| | - Jadzia Wray
- Medicine, St. George's University School of Medicine, St. George's, GRD
| | | | - Mary Maj
- Biochemistry, St. George's University School of Medicine, St. George's, GRD
| | - Reetuparna Nath
- Educational Services, St. George's University, St. George's, GRD
| | | | - Sabyasachi Maity
- Physiology, St. George's University School of Medicine, St. George's, GRD
| | - Samal Nauhria
- Pathology, St. Matthew's University, Georgetown, CYM
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Ma Chair CM, Coffey CW, DeWerd LA, Liu C, Nath R, Seltzer SM, Seuntjens JP. Erratum: "AAPM protocol for 40-300 kV x-ray beam dosimetry in radiotherapy and radiobiology". Med Phys 2023. [PMID: 36735148 DOI: 10.1002/mp.16239] [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: 11/02/2022] [Accepted: 01/19/2023] [Indexed: 02/04/2023] Open
Affiliation(s)
- C-M Ma Chair
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania, USA
| | - C W Coffey
- Department of Radiation Oncology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - L A DeWerd
- Medical Physics, University of Wisconsin, Madison, Wisconsin, USA
| | - C Liu
- Department of Radiation Oncology, University of Florida, Gainesville, Florida, USA
| | - R Nath
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - S M Seltzer
- Radiation Physics Division, National Institute of Standards and Technology, Gaithersburg, Maryland, USA
| | - J P Seuntjens
- Department of Medical Physics, Princess Margaret Cancer Centre, Toronto, ON, Canada
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Nain P, Nayak N, Maj MC, Singh RK, Kaur J, Jeong Y, Maity S, Nath R, Hilgers RH, Nauhria S, Nauhria S. Efficacy of Lanthanum Carbonate and Sevelamer Carbonate as Phosphate Binders in Chronic Kidney Disease-A Comparative Clinical Study. Pharmacy (Basel) 2023; 11:pharmacy11010027. [PMID: 36827665 PMCID: PMC9960578 DOI: 10.3390/pharmacy11010027] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023] Open
Abstract
(1) Background: Hyperphosphatemia is correlated with an increased rate of mortality and morbidity due to cardiovascular diseases in chronic kidney disease (CKD) patients. It can be improved by restricting dietary intake of phosphate and oral phosphate binders, such as lanthanum carbonate and sevelamer carbonate. (2) Objective: To evaluate the clinical efficacy of sevelamer carbonate in comparison to lanthanum carbonate as phosphate binders for the treatment of hyperphosphatemia in CKD patients. (3) Methods: A randomized control comparative clinical study was conducted for one year on 150 CKD patients associated with hyperphosphatemia, divided into two groups, i.e., Group 1 (n = 75) treated with sevelamer carbonate 800 mg thrice daily and Group 2 (n = 75) treated with lanthanum carbonate 500 mg thrice daily. The patients were assessed at the time of enrollment in the study, after three months and after six months from baseline for different parameters, i.e., complete blood count, liver function tests, renal function tests, electrolytes, and serum phosphate level. (4) Results: 150 CKD patients aged 51-60 participated in the study. The mean age of patients was 54 ± 4.6 years, and males (55.71%) were more common than females (44.29%). Hypertension was the common comorbidity in both groups with chronic kidney disease. After six months of treatment, the mean serum phosphate level was significantly decreased from 8.31 ± 0.09 mg/dL to 5.11 ± 0.18 (38%) in Group 1 and from 8.79 ± 0.28 mg/dl to 4.02 ± 0.12 (54%; p < 0.05) in Group 2, respectively. In both groups, no significant difference was found in other parameters such as parathyroid hormone, calcium, uric acid, LFT, RFT, CBC, etc. (5) Conclusion: Lanthanum carbonate is more efficacious in lowering serum phosphate concentrations and effectively managing hyperphosphatemia as compared to sevelamer carbonate.
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Affiliation(s)
- Parminder Nain
- CT Institute of Pharmaceutical Sciences, Jalandhar 144020, Punjab, India
| | - Narendra Nayak
- Department of Microbiology, St. Matthew’s University School of Medicine, Georgetown P.O. Box 30992, Cayman Islands
| | - Mary C. Maj
- Department of Biochemistry, St. George’s University School of Medicine, St. George’s, Grenada
| | - Rohit Kumar Singh
- MM College of Pharmacy, Maharishi Markandeshwar University, Ambala 133207, Haryana, India
| | - Jaspreet Kaur
- CT Institute of Pharmaceutical Sciences, Jalandhar 144020, Punjab, India
| | - Yujin Jeong
- Medical Student Research Institute, Department of Clinical Medicine, American University of Antigua, St. John’s, Antigua and Barbuda
| | - Sabyasachi Maity
- Department of Physiology, Neuroscience and Behavioral Sciences, St. George’s University School of Medicine, St. George’s, Grenada
| | - Reetuparna Nath
- Department of Education Service, St. George’s University, St. George’s, Grenada
| | - Robert H. Hilgers
- Department of Pharmacology, St. Matthew’s University School of Medicine, Georgetown P.O. Box 30992, Cayman Islands
| | - Shreya Nauhria
- Department of Psychology, University of Leicester, Leicester LE1 7RH, UK
| | - Samal Nauhria
- Department of Pathology, St. Matthew’s University School of Medicine, Georgetown P.O. Box 30992, Cayman Islands
- Correspondence:
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Maity S, Nauhria S, Nayak N, Nauhria S, Coffin T, Wray J, Haerianardakani S, Sah R, Spruce A, Jeong Y, Maj MC, Sharma A, Okpara N, Ike CJ, Nath R, Nelson J, Parwani AV. Virtual Versus Light Microscopy Usage among Students: A Systematic Review and Meta-Analytic Evidence in Medical Education. Diagnostics (Basel) 2023; 13:diagnostics13030558. [PMID: 36766660 PMCID: PMC9914930 DOI: 10.3390/diagnostics13030558] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 01/26/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The usage of whole-slide images has recently been gaining a foothold in medical education, training, and diagnosis. OBJECTIVES The first objective of the current study was to compare academic performance on virtual microscopy (VM) and light microscopy (LM) for learning pathology, anatomy, and histology in medical and dental students during the COVID-19 period. The second objective was to gather insight into various applications and usage of such technology for medical education. MATERIALS AND METHODS Using the keywords "virtual microscopy" or "light microscopy" or "digital microscopy" and "medical" and "dental" students, databases (PubMed, Embase, Scopus, Cochrane, CINAHL, and Google Scholar) were searched. Hand searching and snowballing were also employed for article searching. After extracting the relevant data based on inclusion and execution criteria, the qualitative data were used for the systematic review and quantitative data were used for meta-analysis. The Newcastle Ottawa Scale (NOS) scale was used to assess the quality of the included studies. Additionally, we registered our systematic review protocol in the prospective register of systematic reviews (PROSPERO) with registration number CRD42020205583. RESULTS A total of 39 studies met the criteria to be included in the systematic review. Overall, results indicated a preference for this technology and better academic scores. Qualitative analyses reported improved academic scores, ease of use, and enhanced collaboration amongst students as the top advantages, whereas technical issues were a disadvantage. The performance comparison of virtual versus light microscopy meta-analysis included 19 studies. Most (10/39) studies were from medical universities in the USA. VM was mainly used for teaching pathology courses (25/39) at medical schools (30/39). Dental schools (10/39) have also reported using VM for teaching microscopy. The COVID-19 pandemic was responsible for the transition to VM use in 17/39 studies. The pooled effect size of 19 studies significantly demonstrated higher exam performance (SMD: 1.36 [95% CI: 0.75, 1.96], p < 0.001) among the students who used VM for their learning. Students in the VM group demonstrated significantly higher exam performance than LM in pathology (SMD: 0.85 [95% CI: 0.26, 1.44], p < 0.01) and histopathology (SMD: 1.25 [95% CI: 0.71, 1.78], p < 0.001). For histology (SMD: 1.67 [95% CI: -0.05, 3.40], p = 0.06), the result was insignificant. The overall analysis of 15 studies assessing exam performance showed significantly higher performance for both medical (SMD: 1.42 [95% CI: 0.59, 2.25], p < 0.001) and dental students (SMD: 0.58 [95% CI: 0.58, 0.79], p < 0.001). CONCLUSIONS The results of qualitative and quantitative analyses show that VM technology and digitization of glass slides enhance the teaching and learning of microscopic aspects of disease. Additionally, the COVID-19 global health crisis has produced many challenges to overcome from a macroscopic to microscopic scale, for which modern virtual technology is the solution. Therefore, medical educators worldwide should incorporate newer teaching technologies in the curriculum for the success of the coming generation of health-care professionals.
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Affiliation(s)
- Sabyasachi Maity
- Department of Physiology, Neuroscience, and Behavioral Sciences, St. George’s University School of Medicine, St. George’s, Grenada
| | - Samal Nauhria
- Department of Pathology, St. Matthews University School of Medicine, Georgetown P.O. Box 30992, Cayman Islands
- Correspondence:
| | - Narendra Nayak
- Department of Microbiology, St. Matthews University School of Medicine, Georgetown P.O. Box 30992, Cayman Islands
| | - Shreya Nauhria
- Department of Psychology, University of Leicester, Leicester LE1 7RH, UK
| | - Tamara Coffin
- Medical Student Research Institute, St. George’s University School of Medicine, St. George’s, Grenada
| | - Jadzia Wray
- Medical Student Research Institute, St. George’s University School of Medicine, St. George’s, Grenada
| | - Sepehr Haerianardakani
- Medical Student Research Institute, St. George’s University School of Medicine, St. George’s, Grenada
| | - Ramsagar Sah
- Department of Public Health, Torrens University, Ultimo, Sydney, NSW 2007, Australia
| | - Andrew Spruce
- Department of Pathology, St. Matthews University School of Medicine, Georgetown P.O. Box 30992, Cayman Islands
| | - Yujin Jeong
- Department of Clinical Medicine, American University of Antigua, St. John’s, Antigua and Barbuda
| | - Mary C. Maj
- Department of Biochemistry, St. George’s University School of Medicine, St. George’s, Grenada
| | - Abhimanyu Sharma
- Department of Pathology, Government Medical College, Jammu 180001, India
| | - Nicole Okpara
- Department of Pathology, St. Matthews University School of Medicine, Georgetown P.O. Box 30992, Cayman Islands
| | - Chidubem J. Ike
- Department of Clinical Medicine, American University of Antigua, St. John’s, Antigua and Barbuda
| | - Reetuparna Nath
- Department of Education Service, St. George’s University, St. George’s, Grenada
| | - Jack Nelson
- Medical Illustrator, The Centre for Biomedical Visualization, St. George’s University, St. George’s, Grenada
| | - Anil V. Parwani
- Department of Pathology, Wexner Medical Center, The Ohio State University, Cooperative Human Tissue Network (CHTN) Midwestern Division, Columbus, OH 43210, USA
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Maity S, Wray J, Coffin T, Nath R, Nauhria S, Sah R, Waechter R, Ramdass P, Nauhria S. Academic and Social Impact of Menstrual Disturbances in Female Medical Students: A Systematic Review and Meta-Analysis. Front Med (Lausanne) 2022; 9:821908. [PMID: 35242785 PMCID: PMC8886240 DOI: 10.3389/fmed.2022.821908] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 11/26/2021] [Accepted: 01/14/2022] [Indexed: 11/25/2022] Open
Abstract
Background The stressful academic schedule of medical students poses an obvious challenge to their daily lifestyle. Psychosomatic discomfort poses a significant risk for inaccurate self-medication for ameliorating menstrual complications and feeling better, thus directly impacting personal and academic wellbeing. Objective The impact of menstrual disturbances on academic life is not extensively explored. Therefore, the primary objective of this research was to probe the prevalence of menstrual disturbances and assess the academic and social impact. Finally, the authors provide an overview of pharmacological and other interventions students adopt to reduce clinical symptoms. Methods A database search was conducted from the year 2016 till September 2021 for the studies reporting the prevalence of menstrual disorders in all geographic locations of the world. Keywords used for searching databases included “menstrual disturbances” and “medical students,” “prevalence” OR “symptoms” of “Premenstrual syndrome” OR “Premenstrual dysphoric disorder” OR “Dysmenorrhea” in medical students. Prospero Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) and Meta-Analysis of Observational Studies in Epidemiology (MOOSE) protocols were followed. The protocol was registered in the International prospective register of systematic reviews (PROSPERO), the Center for Reviews and Dissemination, University of York (CRD42021277962). The quality of the methodologies used in selected studies was evaluated by a modified version of Newcastle Ottawa Scale (NOS). Results Initially, 1527 articles were available. After a review, 26 papers were selected for analysis. A total of 25 citations were identified for quantitative analyses, out of which 16 studies reported Pre-menstrual syndrome, 7 reported Pre-menstrual dysphoric disorder, and 13 articles reported dysmenorrhea. The pooled prevalence of Pre-menstrual syndrome was 51.30%, Pre-menstrual dysphoric disorder was 17.7%, and dysmenorrhea was 72.70%. Most common associated lifestyle factors were stress, excessive caffeine intake and lack of exercise. Painkillers, hot packs and hot beverages were amongst the common measures taken by the students to relieve their symptoms. Conclusions The current situation calls for action to accommodate students' needs and bridge the social gap regarding menstrual health. Proactive measures by medical educators and stakeholders are required for an inclusive, accommodating educational environment which will minimize the gender discrepancy in academic satisfaction and professional life.
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Affiliation(s)
- Sabyasachi Maity
- Department of Physiology, Neuroscience, and Behavioral Sciences, St. George's University School of Medicine, St. George's, Grenada
| | - Jadzia Wray
- Medical Student Research Institute, St. George's University School of Medicine, St. George's, Grenada
| | - Tamara Coffin
- Medical Student Research Institute, St. George's University School of Medicine, St. George's, Grenada
| | - Reetuparna Nath
- Department of Educational Services, St. George's University, St. George's, Grenada
| | - Shreya Nauhria
- Department of Psychology, University of Leicester, Leicester, United Kingdom
| | | | - Randall Waechter
- Department of Physiology, Neuroscience, and Behavioral Sciences, St. George's University School of Medicine, St. George's, Grenada
| | - Prakash Ramdass
- Department of Public Health and Preventive Medicine, St. George's University School of Medicine, St. George's, Grenada
| | - Samal Nauhria
- Department of Pathology, St. Matthew's University School of Medicine, Grand Cayman, Cayman Islands
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Kaur S, Gill KS, Manjari M, Kumar S, Nauhria S, Nath R, Patel C, Hamdan K, Jeong Y, Nayak NP, Maity S, Hilgers R, Nauhria S. Human Epidermal Growth Factor Receptor 2 (HER2) Expression in Colorectal Carcinoma: A Potential Area of Focus for Future Diagnostics. Cureus 2022; 14:e22811. [PMID: 35382213 PMCID: PMC8976506 DOI: 10.7759/cureus.22811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/03/2022] [Indexed: 11/05/2022] Open
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Haloi S, Borah L, Bhuyan R, Saikia B, Requib M, Nath R, Dixit C, Singh C. Comparative study of feeding complete feed block and total mixed ration as complete feed on nutrient utilization, blood biochemical profile and milk yield in crossbred cows. ANIM NUTR FEED TECHN 2022. [DOI: 10.5958/0974-181x.2022.00014.2] [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: 10/17/2022]
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Jimenez S, Bookless D, Nath R, Leong W, Kotaniemi J, Tikka P. Automated maintenance feasibility testing on the EU DEMO Automated Inspection and Maintenance Test Unit (AIM-TU). Fusion Engineering and Design 2021. [DOI: 10.1016/j.fusengdes.2021.112517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Liu W, Yan H, MacDonald C, Roberts K, Chen Z, Nath R. Focused kV X-ray Radiotherapy for Ocular Diseases. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.345] [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: 11/26/2022]
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Quaranta M, Mehra G, Nath R, Sayasneh A. Why a benign ovarian mass can still undergo surgery by a gynaecological cancer surgeon? Australas J Ultrasound Med 2019. [DOI: 10.1002/ajum.12147] [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] [Indexed: 11/12/2022] Open
Affiliation(s)
- M. Quaranta
- Department of Gynaecological Oncology Guy's and St Thomas’ NHS Foundation Trust
| | - G. Mehra
- Department of Gynaecological Oncology Guy's and St Thomas’ NHS Foundation Trust
- Faculty of Life Sciences and Medicine King's College London
| | - R. Nath
- Department of Gynaecological Oncology Guy's and St Thomas’ NHS Foundation Trust
| | - A. Sayasneh
- Department of Gynaecological Oncology Guy's and St Thomas’ NHS Foundation Trust
- Faculty of Life Sciences and Medicine King's College London
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Basher A, Rashid MM, Habibullah AM, Nath R, Akter D, Chowdhury IH, Azim A, Nath P, Faiz MA. Miltefosine Induced Reduced Male Fertility Capacity after Treatment of Post Kala-azar Dermal Leishmaniasis, Bangladesh. Mymensingh Med J 2019; 28:328-332. [PMID: 31086147] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Post Kala-azar Dermal Leishmaniasis (PKDL) is the sequel of visceral leishmaniasis in Indian subcontinent and may appear among patients with or without previous history of visceral leishmaniasis (VL). The aim of the study is to understand the male reproductive safety profile of miltefosine used for the treatment of Post Kala-azar Dermal Leishmaniasis (PKDL) in Bangladesh. From January 2017 to March 2017, an exploratory study was carried out on male fertility capacity in Bangladesh among male patients above 14 years old with PKDL treated with miltefosine. Twenty nine male patients were included to observe the effect of miltefosine on reproductive health. All PKDL patients had history of visceral leishmaniasis (VL) in different time periods. Among them three (10.3%) patients were unable to ejaculate semen. In semen analysis, 3 patients (10.3%) were found azoospermia (sperm count & motility- 0, viscosity- good, pH- 7 to 8), microscopically there was presence of RBC (5-15/HPF), WBC (8-15/HPF). Another 3 patients (10.3%) were found oligospermia (sperm count- 4.2 to 15.3 million/ml, motility- 20 to 50%, viscosity- good, pH- 6 to 9, RBC- 4 to 15/HPF, WBC- 4 to 15/HPF). The study documented some important findings in evaluating male infertility and selection of drug regimens in treating PKDL patients with miltefosine for 12 weeks.
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Affiliation(s)
- A Basher
- Dr Ariful Basher, Registrar, Infectious and Tropical Medicine, Mymensingh Medical College & Hospital (MMCH), Mymensingh, Bangladesh; E-mail:
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Affiliation(s)
- O Veraitch
- St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, London, U.K
| | - F Lewis
- St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, London, U.K
| | - E Craythorne
- St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, London, U.K
| | - E Calonje
- St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, London, U.K.,Department of Dermatopathology, Guy's and St Thomas' NHS Foundation Trust, London, U.K
| | - R Nath
- Department of Gynaecology Oncology, Guy's and St Thomas' NHS Foundation Trust, London, U.K
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Nath R, Aldwin C, Choun S, Kurth M, Spiro A. DO PERSONALITY TRAITS PREDICT CHANGES IN OPTIMAL AGING? LONGITUDINAL FINDINGS FROM VA NORMATIVE AGING STUDY. Innov Aging 2018. [DOI: 10.1093/geroni/igy031.3444] [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] [Indexed: 11/14/2022] Open
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Quaranta M, Mehra G, Nath R, Culora G, Sayasneh A. A rare case of refractory disseminated leiomyomatosisperitonealis complicated by cauda equina compression. Eur J Obstet Gynecol Reprod Biol 2018; 229:205-207. [PMID: 30181024 DOI: 10.1016/j.ejogrb.2018.08.580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 05/11/2018] [Accepted: 08/26/2018] [Indexed: 11/17/2022]
Affiliation(s)
- M Quaranta
- Department of Obstetrics and Gynaecology, Guy's and St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, United Kingdom
| | - G Mehra
- Department of Obstetrics and Gynaecology, Guy's and St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, United Kingdom
| | - R Nath
- Department of Obstetrics and Gynaecology, Guy's and St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, United Kingdom
| | - G Culora
- Department of Histopathology, Guy's and St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, United Kingdom
| | - A Sayasneh
- Department of Obstetrics and Gynaecology, Guy's and St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, United Kingdom; Department of Surgery and Cancer, Imperial College London, Hammersmith Campus, Du Cane Road, London, W12 0HS, United Kingdom. c: School of Medical Education, Faculty of Life Sciences and Medicine, King's College, Guy's Campus, St Thomas Street, London, SE1 9RT, United Kingdom; School of Medical Education, Faculty of Life Sciences and Medicine, King's College, Guy's Campus, St Thomas Street, London, SE1 9RT, United Kingdom.
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Rajkumar S, Lewis F, Nath R. The importance of topical steroids after adhesiolysis in erosive lichen planus and graft versus host disease. J OBSTET GYNAECOL 2018; 39:82-85. [DOI: 10.1080/01443615.2018.1463207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- S. Rajkumar
- Department of Gynaecological Oncology, Guy’s and St Thomas NHS Trust, London, UK
| | - F. Lewis
- St John’s Institute of Dermatology, Guy’s and St Thomas NHS Trust, London, UK
| | - R. Nath
- Department of Gynaecological Oncology, Guy’s and St Thomas NHS Trust, London, UK
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Abstract
PURPOSE Ectopia lentis remains a therapeutic challenge for ophthalmologists. It classically presents with a preceding history of blunt or penetrating ocular trauma, or it may be associated with other ocular disorders such as congenital glaucoma and aniridia, or concomitant hereditary systemic diseases such as Marfan syndrome and homocystinuria. METHODS Case report. RESULTS The authors describe a previously unreported mechanism of ocular trauma associated with continuous eye rubbing, resulting in bilateral recurrent subluxation of both intraocular lens and crystalline lens. CONCLUSIONS It is useful for the ophthalmologist to be aware of this uncommon cause of ectopia lentis, since early advice and appropriate medical or surgical intervention may prevent more severe, sight-threatening complications.
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Affiliation(s)
- N M Peter
- Department of Ophthalmology, Worthing Hospital, Worthing, West Sussex, UK.
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Tippireddy S, Chetty R, Raut KK, Naik MH, Mukharjee PK, Jain M, Nath R, Wojciechowski K, Mallik RC. Electronic and thermoelectric properties of Zn and Se double substituted tetrahedrite. Phys Chem Chem Phys 2018; 20:28667-28677. [DOI: 10.1039/c8cp05479g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The influence of Zn and Se double substitution on the electronic and thermoelectric properties of tetrahedrite is investigated in this study.
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Affiliation(s)
- Sahil Tippireddy
- Thermoelectric Materials and Devices Laboratory
- Department of Physics
- Indian Institute of Science
- Bangalore
- India
| | - Raju Chetty
- Faculty of Materials Science and Ceramics
- AGH University of Science and Technology
- Cracow
- Poland
| | - Krushna Kumari Raut
- Faculty of Materials Science and Ceramics
- AGH University of Science and Technology
- Cracow
- Poland
| | - Mit H. Naik
- Department of Physics
- Indian Institute of Science
- Bangalore
- India
| | | | - Manish Jain
- Department of Physics
- Indian Institute of Science
- Bangalore
- India
| | - R. Nath
- Indian Institute of Science Education and Research
- Thiruvananthapuram
- India
| | - Krzysztof Wojciechowski
- Faculty of Materials Science and Ceramics
- AGH University of Science and Technology
- Cracow
- Poland
| | - Ramesh Chandra Mallik
- Thermoelectric Materials and Devices Laboratory
- Department of Physics
- Indian Institute of Science
- Bangalore
- India
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Edler D, Mishra C, Wächtler F, Nath R, Sinha S, Santos L. Quantum Fluctuations in Quasi-One-Dimensional Dipolar Bose-Einstein Condensates. Phys Rev Lett 2017; 119:050403. [PMID: 28949743 DOI: 10.1103/physrevlett.119.050403] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Indexed: 06/07/2023]
Abstract
Recent experiments have revealed that beyond-mean-field corrections are much more relevant in weakly interacting dipolar condensates than in their nondipolar counterparts. We show that in quasi-one-dimensional geometries quantum corrections in dipolar and nondipolar condensates are strikingly different due to the peculiar momentum dependence of the dipolar interactions. The energy correction of the condensate presents not only a modified density dependence, but it may even change from attractive to repulsive at a critical density due to the surprising role played by the transversal directions. The anomalous quantum correction translates into a strongly modified physics for quantum-stabilized droplets and dipolar solitons. Moreover, and for similar reasons, quantum corrections of three-body correlations, and hence of three-body losses, are strongly modified by the dipolar interactions. This intriguing physics can be readily probed in current experiments with magnetic atoms.
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Affiliation(s)
- D Edler
- Institut für Theoretische Physik, Leibniz Universität, 30167 Hannover, Germany
| | - C Mishra
- Institut für Theoretische Physik, Leibniz Universität, 30167 Hannover, Germany
- Indian Institute of Science Education and Research, Pune 411 008, India
| | - F Wächtler
- Institut für Theoretische Physik, Leibniz Universität, 30167 Hannover, Germany
| | - R Nath
- Indian Institute of Science Education and Research, Pune 411 008, India
| | - S Sinha
- Indian Institute of Science Education and Research-Kolkata, Mohanpur, Nadia 741246, India
| | - L Santos
- Institut für Theoretische Physik, Leibniz Universität, 30167 Hannover, Germany
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Lee H, Aldwin C, Choun S, Nath R, Spiro A. CHANGES IN DEPRESSIVE AND ANXIETY SYMPTOMS IN ADULTHOOD: FINDINGS FROM THE VA NORMATIVE AGING STUDY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2006] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- H. Lee
- School of Social and Behavioral Health Sciences, Oregon State University, Corvallis, Oregon,
| | - C.M. Aldwin
- School of Social and Behavioral Health Sciences, Oregon State University, Corvallis, Oregon,
| | - S. Choun
- School of Social and Behavioral Health Sciences, Oregon State University, Corvallis, Oregon,
| | - R. Nath
- School of Social and Behavioral Health Sciences, Oregon State University, Corvallis, Oregon,
| | - A. Spiro
- VA Boston Healthcare System & Schools of Public Health and Medicine, Boston University, Boston, Massachusetts
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Thamban S, Arjun U, Padmanabhan M, Nath R. Structural and magnetic properties of spin-1/2 dimer compound Cu 2(IPA) 2(DMF)(H 2O) with a large spin gap. J Phys Condens Matter 2017; 29:255801. [PMID: 28516898 DOI: 10.1088/1361-648x/aa6ecb] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We present the synthesis and a detailed investigation of structural and magnetic properties of metal-organic compound Cu2(IPA)2(DMF)(H2O) by means of x-ray diffraction, magnetization, and heat capacity measurements. Single crystals of the title compound were synthesized by judicious selection of organic ligand and employing a selective hydrothermal reaction route. It crystallizes in an orthorhombic structure with space group Cmca. The structural analysis revealed that two Cu2+ ions are held together by the organic component (-O-C-O-) in a square paddle-wheel to form spin dimers which are aligned perpendicular to each other and are further coupled through organic ligands (isophthalic acid) forming two-dimensional layers. Temperature dependent magnetic susceptibility [Formula: see text] could be described well using spin-1/2 dimer model. The spin susceptibility [Formula: see text] shows an exponential decrease in the low temperature region, below the broad maximum, confirming the singlet ground state with a large spin gap of [Formula: see text] K. The heat capacity C p measured as a function of temperature also confirms the absence of magnetic long-range-order down to 2 K.
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Affiliation(s)
- S Thamban
- School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram-695016, India
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21
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Ranjith KM, Brinda K, Arjun U, Hegde NG, Nath R. Double phase transition in the triangular antiferromagnet Ba 3CoTa 2O 9. J Phys Condens Matter 2017; 29:115804. [PMID: 28067634 DOI: 10.1088/1361-648x/aa57be] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Here, we report the synthesis and magnetic properties of a new triangular lattice antiferromagnet Ba3CoTa2O9. The effective spin of Co2+ is found to be J = 1/2 at low temperatures due to the combined effect of crystal field and spin-orbit coupling. Ba3CoTa2O9 undergoes two successive magnetic phase transitions at [Formula: see text] K and [Formula: see text] K in zero applied field, which is typical for triangular antiferromagnets with the easy-axis magnetic anisotropy. With increasing field, the transition anomalies are found to shift toward low temperatures, confirming the antiferromagnetic nature of the transitions. At higher fields, the transition peaks in the heat capacity data disappear and give way to a broad maximum, which can be ascribed to a Schottky anomaly due to the Zeeman splitting of spin levels. The H - T phase diagram of the compound shows three distinct phases. The possible nature of these phases is discussed.
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Affiliation(s)
- K M Ranjith
- School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram-695016, India
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22
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UrumesePalatty B, Nath R, Manjunath K. Morphology of extensor tendons of medial four fingers in adults and foetuses: A cadaveric study. J ANAT SOC INDIA 2016. [DOI: 10.1016/j.jasi.2016.08.111] [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: 10/20/2022]
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Yan H, Chen Z, Nath R, Liu W. SU-G-BRA-09: Estimation of Motion Tracking Uncertainty for Real-Time Adaptive Imaging. Med Phys 2016. [DOI: 10.1118/1.4956933] [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: 11/07/2022] Open
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24
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Nath R. MO-A-BRC-01: TG167 Report - Introduction. Med Phys 2016. [DOI: 10.1118/1.4957150] [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: 11/07/2022] Open
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Liu W, Zhu D, Trumpore S, Kenneth R, Higgins S, Nath R, Chen Z. SU-F-T-325: On the Use of Bolus in Dosimetry and Dose Reduction for Pacemaker and Defibrillator. Med Phys 2016. [DOI: 10.1118/1.4956510] [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: 11/07/2022] Open
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26
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Mondal D, Hasnain MG, Hossain MS, Ghosh D, Ghosh P, Hossain H, Baker J, Nath R, Haque R, Matlashewski G, Hamano S. Study on the safety and efficacy of miltefosine for the treatment of children and adolescents with post-kala-azar dermal leishmaniasis in Bangladesh, and an association of serum vitamin E and exposure to arsenic with post-kala-azar dermal leishmaniasis: an open clinical trial and case-control study protocol. BMJ Open 2016; 6:e010050. [PMID: 27188804 PMCID: PMC4874179 DOI: 10.1136/bmjopen-2015-010050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Revised: 03/17/2016] [Accepted: 04/08/2016] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION Post-kala-azar dermal leishmaniasis (PKDL) is a dermatological complication that occurs primarily among treated visceral leishmaniasis (VL) patients, and sporadically in a few without a history of VL. It mostly affects children and adolescents but is also common in adults. The conventional treatment with 120 intramuscular injections of sodium stibogluconate (SSG) is phasing out. Miltefosine (MF) is the only eventual alternative to SSG; however, its efficacy and safety profiles for treatment of children and adolescents with PKDL are lacking. In addition, risk factors for PKDL are poorly investigated. Host genetic, nutritional and environmental factors could be potential risk factors. As such, here we propose to evaluate the efficacy and safety of MF for 12 weeks at an allometric dose for children and adolescents with PKDL, and also to explore potential risk factors for PKDL. METHODS AND ANALYSIS A cross-sectional survey will look for suspected participants with PKDL among treated VL children and adolescents, a subsequent open clinical trial with MF at allometric dose, with a follow-up at 12 months. A case-control study will be carried out for PKDL risk factors. Assuming 95% cure rate, 95% CI and α=0.05, a sample size of 73 children with PKDL is needed. Considering an attrition rate of 10%, the final sample size is 80 children in each group. Descriptive and analytical analyses will be performed. Primary outcome is safety and cure rate of 12 weeks of treatment with MF. ETHICS AND DISSEMINATION International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B) Ethical Review Committee (ERC) approved the protocol (PR#013045). Written informed consent will be taken from all participants and their guardians (in case of minor). A Data and Safety Monitoring Board (DSMB) of ICDDR,B ERC will monitor all study activities to ensure the safety of the participants. TRIAL REGISTRATION NUMBER NCT02193022; Pre-results.
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Affiliation(s)
- D Mondal
- Centre for Nutrition and Food Security (CNFS), International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B),Dhaka, Bangladesh
| | - M G Hasnain
- Centre for Nutrition and Food Security (CNFS), International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B),Dhaka, Bangladesh
| | - M S Hossain
- Centre for Nutrition and Food Security (CNFS), International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B),Dhaka, Bangladesh
| | - D Ghosh
- Centre for Nutrition and Food Security (CNFS), International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B),Dhaka, Bangladesh
| | - P Ghosh
- Centre for Nutrition and Food Security (CNFS), International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B),Dhaka, Bangladesh
| | - H Hossain
- Centre for Nutrition and Food Security (CNFS), International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B),Dhaka, Bangladesh
| | - J Baker
- Centre for Nutrition and Food Security (CNFS), International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B),Dhaka, Bangladesh
| | - R Nath
- Centre for Nutrition and Food Security (CNFS), International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B),Dhaka, Bangladesh
| | - R Haque
- Centre for Nutrition and Food Security (CNFS), International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B),Dhaka, Bangladesh
| | - G Matlashewski
- Department of Microbiology and Immunology, McGill University, Montreal, Québec, Canada
| | - S Hamano
- Department of Parasitology, Nagasaki University, Nagasaki, Japan
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Liu W, MacDonald C, Abbas H, Nath R, Chen Z. Nanoparticle Enhanced Focused Kv X-ray Radiation Therapy. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.348] [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: 10/22/2022]
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Saikia L, Sharma A, Nath R, Choudhury G, Borah AK. Salmonella Weltevreden food poisoning in a tea garden of Assam: An outbreak investigation. Indian J Med Microbiol 2015; 33:503-6. [DOI: 10.4103/0255-0857.167347] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Attard NR, Orlowska D, Baker A, Nath R, Lewis F. Vulval melanoma: a patient's story and reflection by the multidisciplinary team. Clin Exp Dermatol 2015; 41:454-5. [PMID: 26411516 DOI: 10.1111/ced.12758] [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: 03/17/2015] [Indexed: 11/29/2022]
Affiliation(s)
| | - N R Attard
- St John's Institute of Dermatology, London, UK
| | - D Orlowska
- St John's Institute of Dermatology, London, UK
| | - A Baker
- St John's Institute of Dermatology, London, UK
| | - R Nath
- Department of Obstetrics and Gynaecology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - F Lewis
- St John's Institute of Dermatology, London, UK
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Liu W, Nath R. TH-AB-303-11: Automatic Prostate Intrafraction Motion Management. Med Phys 2015. [DOI: 10.1118/1.4926166] [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: 11/07/2022] Open
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31
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Chen H, Chen Z, Nath R, Guo F. SU-E-J-161: Quality Assurance of 4DCT Process Using ET Gating Phantom System. Med Phys 2015. [DOI: 10.1118/1.4924246] [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: 11/07/2022] Open
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Magnusson KR, Hauck L, Jeffrey BM, Elias V, Humphrey A, Nath R, Perrone A, Bermudez LE. Relationships between diet-related changes in the gut microbiome and cognitive flexibility. Neuroscience 2015; 300:128-40. [PMID: 25982560 DOI: 10.1016/j.neuroscience.2015.05.016] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [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: 01/28/2015] [Revised: 04/10/2015] [Accepted: 05/06/2015] [Indexed: 02/06/2023]
Abstract
Western diets are high in fat and sucrose and can influence behavior and gut microbiota. There is growing evidence that altering the microbiome can influence the brain and behavior. This study was designed to determine whether diet-induced changes in the gut microbiota could contribute to alterations in anxiety, memory or cognitive flexibility. Two-month-old, male C57BL/6 mice were randomly assigned high-fat (42% fat, 43% carbohydrate (CHO), high-sucrose (12% fat, 70% CHO (primarily sucrose) or normal chow (13% kcal fat, 62% CHO) diets. Fecal microbiome analysis, step-down latency, novel object and novel location tasks were performed prior to and 2weeks after diet change. Water maze testing for long- and short-term memory and cognitive flexibility was conducted during weeks 5-6 post-diet change. Some similarities in alterations in the microbiome were seen in both the high-fat and high-sucrose diets (e.g., increased Clostridiales), as compared to the normal diet, but the percentage decreases in Bacteroidales were greater in the high-sucrose diet mice. Lactobacillales was only significantly increased in the high-sucrose diet group and Erysipelotrichales was only significantly affected by the high-fat diet. The high-sucrose diet group was significantly impaired in early development of a spatial bias for long-term memory, short-term memory and reversal training, compared to mice on normal diet. An increased focus on the former platform position was seen in both high-sucrose and high-fat groups during the reversal probe trials. There was no significant effect of diet on step-down, exploration or novel recognitions. Higher percentages of Clostridiales and lower expression of Bacteroidales in high-energy diets were related to the poorer cognitive flexibility in the reversal trials. These results suggest that changes in the microbiome may contribute to cognitive changes associated with eating a Western diet.
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Affiliation(s)
- K R Magnusson
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331 USA; Linus Pauling Institute, Oregon State University, Corvallis, OR 97331 USA.
| | - L Hauck
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331 USA.
| | - B M Jeffrey
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331 USA.
| | - V Elias
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331 USA; Linus Pauling Institute, Oregon State University, Corvallis, OR 97331 USA.
| | - A Humphrey
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331 USA.
| | - R Nath
- Department of Human Development and Family Sciences, School of Social and Behavioral Health Sciences, Oregon State University, Corvallis, OR 97331 USA.
| | - A Perrone
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331 USA; Linus Pauling Institute, Oregon State University, Corvallis, OR 97331 USA.
| | - L E Bermudez
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331 USA.
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Tanner C, Gans D, White J, Nath R, Pohl J. Electronic health records and patient safety: co-occurrence of early EHR implementation with patient safety practices in primary care settings. Appl Clin Inform 2015; 6:136-47. [PMID: 25848419 DOI: 10.4338/aci-2014-11-ra-0099] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [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: 11/06/2014] [Accepted: 01/23/2015] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The role of electronic health records (EHR) in enhancing patient safety, while substantiated in many studies, is still debated. OBJECTIVE This paper examines early EHR adopters in primary care to understand the extent to which EHR implementation is associated with the workflows, policies and practices that promote patient safety, as compared to practices with paper records. Early adoption is defined as those who were using EHR prior to implementation of the Meaningful Use program. METHODS We utilized the Physician Practice Patient Safety Assessment (PPPSA) to compare primary care practices with fully implemented EHR to those utilizing paper records. The PPPSA measures the extent of adoption of patient safety practices in the domains: medication management, handoffs and transition, personnel qualifications and competencies, practice management and culture, and patient communication. RESULTS Data from 209 primary care practices responding between 2006-2010 were included in the analysis: 117 practices used paper medical records and 92 used an EHR. Results showed that, within all domains, EHR settings showed significantly higher rates of having workflows, policies and practices that promote patient safety than paper record settings. While these results were expected in the area of medication management, EHR use was also associated with adoption of patient safety practices in areas in which the researchers had no a priori expectations of association. CONCLUSIONS Sociotechnical models of EHR use point to complex interactions between technology and other aspects of the environment related to human resources, workflow, policy, culture, among others. This study identifies that among primary care practices in the national PPPSA database, having an EHR was strongly empirically associated with the workflow, policy, communication and cultural practices recommended for safe patient care in ambulatory settings.
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Affiliation(s)
- C Tanner
- Michigan Public Health Institute , Okemos, Michigan, United States
| | - D Gans
- Medical Group Management Association , Englewood, Colorado, United States
| | - J White
- Michigan Public Health Institute , Okemos, Michigan, United States
| | - R Nath
- Colorado Hospital Association, Center for Health Information and Data Analytics , Greenwood Village, Colorado, United States
| | - J Pohl
- The University of Michigan, School of Nursing , Ann Arbor, Michigan, United States
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Nath R, Shannon H, Kabali C, Oremus M. DEVELOPING A SHELTER EVALUATION INSTRUMENT THAT PROMOTES POST-DISASTER POPULATION HEALTH. Br J Soc Med 2015. [DOI: 10.1136/jech-2014-205217.14] [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: 11/03/2022]
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Abstract
Magnetic susceptibility and heat capacity of three manganese based structures are measured and modeled with one-dimensional antiferromagnetic chains.
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Affiliation(s)
- K. S. Asha
- School of Chemistry
- Indian Institute Science Education and Research
- Thiruvananthapuram
- India
| | - K. M. Ranjith
- School of Physics
- Indian Institute of Science Education and Research
- Thiruvananthapuram
- India
| | - Arvind Yogi
- School of Physics
- Indian Institute of Science Education and Research
- Thiruvananthapuram
- India
| | - R. Nath
- School of Physics
- Indian Institute of Science Education and Research
- Thiruvananthapuram
- India
| | - Sukhendu Mandal
- School of Chemistry
- Indian Institute Science Education and Research
- Thiruvananthapuram
- India
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Zhang Y, Wu H, Chen Z, Knisely J, Nath R, Yue H, Feng Z, Bao S, Deng J. Personalized Quantification of Imaging Doses to Children and Adults Scanned by Standard Thoracic Cone Beam CT in Radiation Therapy. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.08.337] [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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Nath R, Mahanta N, Islam M, Deka SS. Biochemical characterization of preovulatory and cystic ovarian follicular fluid of sow. Vet World 2014. [DOI: 10.14202/vetworld.2014.895-898] [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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Abramson JS, Feldman T, Kroll-Desrosiers AR, Muffly LS, Winer E, Flowers CR, Lansigan F, Nabhan C, Nastoupil LJ, Nath R, Goy A, Castillo JJ, Jagadeesh D, Woda B, Rosen ST, Smith SM, Evens AM. Peripheral T-cell lymphomas in a large US multicenter cohort: prognostication in the modern era including impact of frontline therapy. Ann Oncol 2014; 25:2211-2217. [PMID: 25193992 DOI: 10.1093/annonc/mdu443] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Optimal frontline therapy for peripheral T-cell lymphoma (PTCL) in the modern era remains unclear. PATIENTS AND METHODS We examined patient characteristics, treatment, and outcomes among 341 newly diagnosed PTCL patients from 2000 to 2011. Outcome was compared with a matched cohort of diffuse large B-cell lymphoma (DLBCL) patients, and prognostic factors were assessed using univariate and multivariate analyses. RESULTS PTCL subtypes included PTCL, not otherwise specified (PTCL-NOS) (31%), anaplastic large T-cell lymphoma (ALCL) (26%), angioimmunoblastic T-cell lymphoma (23%), NK/T-cell lymphoma (7%), acute T-cell leukemia/lymphoma (6%), and other (7%). Median age was 62 years (range 18-95 years), and 74% had stage III-IV disease. Twenty-three (7%) patients received only palliative care whereas 318 received chemotherapy: CHOP-like regimens (70%), hyperCVAD/MA (6%), or other (18%). Thirty-three patients (10%) underwent stem-cell transplantation (SCT) in first remission. The overall response rate was 73% (61% complete); 24% had primary refractory disease. With 39-month median follow-up, 3-year progression-free survival (PFS) and overall survival (OS) were 32% and 52%. PFS and OS for PTCL patients were significantly inferior to matched patients with DLBCL. On multivariate analysis, stage I-II disease was the only significant pretreatment prognostic factor [PFS: hazard ratio (HR) 0.54, 95% confidence interval (CI) 0.34-0.85, P = 0.007; OS: HR 0.42, 95% CI 0.22-0.78, P = 0.006]. ALK positivity in ALCL was prognostic on univariate analysis, but lost significance on multivariate analysis. The most dominant prognostic factor was response to initial therapy (complete response versus other), including adjustment for stage and SCT [PFS: HR 0.19, 95% CI 0.14-0.28, P < 0.0001; OS: HR 0.26, 95% CI 0.17-0.40, P < 0.0001]. No overall survival difference was observed based on choice of upfront regimen or SCT in first remission. CONCLUSIONS This analysis identifies early-stage disease and initial treatment response as dominant prognostic factors in PTCL. No clear benefit was observed for patients undergoing consolidative SCT. Novel therapeutic approaches for PTCL are critically needed.
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Affiliation(s)
- J S Abramson
- Center for Lymphoma, Massachusetts General Hospital Cancer Center, Boston
| | - T Feldman
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack
| | - A R Kroll-Desrosiers
- Department of Hematology/Oncology, University of Massachusetts Medical School, Worcester
| | - L S Muffly
- Department of Hematology/Oncology, University of Chicago, Chicago
| | - E Winer
- Department of Hematology/Oncology, Rhode Island Hospital, Providence
| | - C R Flowers
- Department of Hematology/Oncology, Emory University School of Medicine, Atlanta
| | - F Lansigan
- Department of Hematology/Oncology, Dartmouth-Hitchcock Medical Center, Lebanon
| | - C Nabhan
- Department of Hematology/Oncology, University of Chicago, Chicago
| | - L J Nastoupil
- Department of Hematology/Oncology, Emory University School of Medicine, Atlanta
| | - R Nath
- Department of Hematology/Oncology, University of Massachusetts Medical School, Worcester
| | - A Goy
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack
| | - J J Castillo
- Department of Hematology/Oncology, Miriam Hospital, Providence
| | - D Jagadeesh
- Department of Hematology/Oncology, University of Massachusetts Medical School, Worcester
| | - B Woda
- Department of Hematology/Oncology, University of Massachusetts Medical School, Worcester
| | - S T Rosen
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago
| | - S M Smith
- Department of Hematology/Oncology, University of Chicago, Chicago
| | - A M Evens
- Department of Hematology/Oncology, Tufts Medical Center, Boston, USA.
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Zhang Y, Wu H, Chen Z, Knisely J, Nath R, Yue H, Feng Z, Bao S, Deng J. Personalized Quantification of Imaging Doses to Children and Adults Scanned by Standard Thoracic Cone Beam CT in Radiation Therapy. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Guo F, Chen Z, Nath R. SU-E-T-570: Management of Radiation Oncology Patients with Cochlear Implant and Other Bionic Devices in the Brain and Head and Neck Regions. Med Phys 2014. [DOI: 10.1118/1.4888905] [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: 11/07/2022] Open
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41
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Ahmad M, Chu A, Lincoln H, Chen Z, Deng J, Nath R. SU-E-T-431: Vertically-Oriented Farmer-Type Chamber for Small-Field Applications. Med Phys 2014. [DOI: 10.1118/1.4888764] [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: 11/07/2022] Open
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42
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Abbas H, Abolfath R, Nath R, Chen Z. SU-E-T-518: Dosiemtric Impact of Patient Positioning Uncertainty in SBRT Treatments. Med Phys 2014. [DOI: 10.1118/1.4888851] [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: 11/07/2022] Open
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Abolfath R, Guo F, Chen Z, Nath R. SU-E-T-191: First Principle Calculation of Quantum Yield in Photodynamic Therapy. Med Phys 2014. [DOI: 10.1118/1.4888521] [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: 11/07/2022] Open
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Chen Z, Nath R. SU-F-19A-06: Experimental Investigation of the Energy Dependence of TLD Sensitivity in Low-Energy Photon Beams. Med Phys 2014. [DOI: 10.1118/1.4889032] [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: 11/07/2022] Open
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45
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Chu A, Feng W, Ahmad M, Chen Z, Nath R. SU-E-J-85: Leave-One-Out Perturbation (LOOP) Fitting Algorithm for Absolute Dose Film Calibration. Med Phys 2014. [DOI: 10.1118/1.4888137] [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: 11/07/2022] Open
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46
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Zhang Y, Wu H, Chen Z, Knisely J, Nath R, Feng Z, Bao S, Deng J. EP-1744: Personalized organ dose assessment of cone-beam CT imaging forimage-guided thoracic radiotherapy. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31862-4] [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: 11/26/2022]
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47
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Kumar N, Srivastava AK, Nath R, Gupta BK, Varma GD. Probing the highly efficient room temperature ammonia gas sensing properties of a luminescent ZnO nanowire array prepared via an AAO-assisted template route. Dalton Trans 2014; 43:5713-20. [DOI: 10.1039/c3dt53305k] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly ordered luminescent ZnO nanowire array was synthesized which has excellent sensitivity and fast response to NH3 gas.
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Affiliation(s)
- Nagesh Kumar
- Department of Physics and Centre of Nanotechnology
- Indian Institute of Technology Roorkee
- Roorkee-247667, India
| | - A. K. Srivastava
- Indus Synchrotrons Utilization Division
- Raja Ramanna Centre for Advanced Technology
- Indore-452013, India
| | - R. Nath
- Department of Physics and Centre of Nanotechnology
- Indian Institute of Technology Roorkee
- Roorkee-247667, India
| | | | - G. D. Varma
- Department of Physics and Centre of Nanotechnology
- Indian Institute of Technology Roorkee
- Roorkee-247667, India
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Nath R, Prasad R, Sarma S. Oxidative stress biomarkers in cross bred cows affected with foot and mouth disease. INDIAN J ANIM RES 2014. [DOI: 10.5958/0976-0555.2014.00045.4] [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: 10/24/2022]
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Ginsberg G, Sonawane B, Nath R, Lewandowski P. Methylmercury-induced inhibition of paraoxonase-1 (PON1)-implications for cardiovascular risk. J Toxicol Environ Health A 2014; 77:1004-1023. [PMID: 25072822 DOI: 10.1080/15287394.2014.919837] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Methylmercury (MeHg) has been associated with increased risk for cardiovascular disease in some but not all epidemiology studies. These inconsistent results may stem from the fact that exposure typically occurs in the context of fish consumption, which is also associated with cardioprotective factors such as omega-3 fatty acids. Mechanistic information may help to understand whether MeHg represents a risk to cardiovascular health. MeHg is a pro-oxidant that inactivates protein sulfhydryls. These biochemical effects may diminish critical antioxidant defense mechanism(s) involved in protecting against atherosclerosis. One such defense mechanism is paraoxonase-1 (PON1), an enzyme present on high-density lipoproteins and that prevents the oxidation of blood lipids and their deposition in vascular endothelium. PON1 is potentially useful as a clinical biomarker of cardiovascular risk, as well as a critical enzyme in the detoxification of certain organophosphate oxons. MeHg and other metals are known to inhibit PON1 activity in vitro. MeHg is associated with lowered serum PON1 activity in a fish-eating population. The implications of lowering PON1 are evaluated by predicting the shift in PON1 population distribution induced by various doses of MeHg. An MeHg dose of 0.3 μg/kg/d is estimated to decrease the population average PON1 level by 6.1% and to increase population risk of acute cardiovascular events by 9.7%. This evaluation provides a plausible mechanism for MeHg-induced cardiovascular risk and suggests means to quantify the risk. This case study exemplifies the use of upstream disease biomarkers to evaluate the additive effect of chemical toxicity with background disease processes in assessing human risk.
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Affiliation(s)
- G Ginsberg
- a Connecticut Department of Public Health , Hartford , Connecticut , USA
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50
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Liu W, Nath R. Continuous Threshold-Based Monitoring Versus Periodic Surveillance for Prostate Intrafraction Motion Management. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.955] [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: 12/01/2022]
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