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Reiner J, Chung Y, Misha SH, Lehner C, Moehle C, Poulos D, Monir S, Charde KJ, Macha P, Kranz L, Thorvaldson I, Thorgrimsson B, Keith D, Hsueh YL, Rahman R, Gorman SK, Keizer JG, Simmons MY. High-fidelity initialization and control of electron and nuclear spins in a four-qubit register. Nat Nanotechnol 2024; 19:605-611. [PMID: 38326467 PMCID: PMC11106007 DOI: 10.1038/s41565-023-01596-9] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 12/20/2023] [Indexed: 02/09/2024]
Abstract
Single electron spins bound to multi-phosphorus nuclear spin registers in silicon have demonstrated fast (0.8 ns) two-qubitSWAP gates and long spin relaxation times (~30 s). In these spin registers, when the donors are ionized, the nuclear spins remain weakly coupled to their environment, allowing exceptionally long coherence times. When the electron is present, the hyperfine interaction allows coupling of the spin and charge degrees of freedom for fast qubit operation and control. Here we demonstrate the use of the hyperfine interaction to enact electric dipole spin resonance to realize high-fidelity ( F = 10 0 - 6 + 0 %) initialization of all the nuclear spins within a four-qubit nuclear spin register. By controllably initializing the nuclear spins to⇓ ⇓ ⇓ , we achieve single-electron qubit gate fidelities of F = 99.78 ± 0.07% (Clifford gate fidelities of 99.58 ± 0.14%), above the fault-tolerant threshold for the surface code with a coherence time ofT 2 * = 12 μ s .
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Affiliation(s)
- J Reiner
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - Y Chung
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - S H Misha
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - C Lehner
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - C Moehle
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - D Poulos
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - S Monir
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
- School of Physics, University of New South Wales, Sydney, New South Wales, Australia
| | - K J Charde
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - P Macha
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - L Kranz
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - I Thorvaldson
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - B Thorgrimsson
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - D Keith
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - Y L Hsueh
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
- School of Physics, University of New South Wales, Sydney, New South Wales, Australia
| | - R Rahman
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
- School of Physics, University of New South Wales, Sydney, New South Wales, Australia
| | - S K Gorman
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - J G Keizer
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia
| | - M Y Simmons
- Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales, Australia.
- Silicon Quantum Computing Pty Ltd., University of New South Wales, Sydney, New South Wales, Australia.
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Ali S, Athar M, Rahman R, Rehman F. Ceftriaxone-induced Kounis syndrome: A case report and review of the literature. Rev Esp Anestesiol Reanim (Engl Ed) 2024; 71:129-133. [PMID: 37683977 DOI: 10.1016/j.redare.2023.01.005] [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: 07/07/2022] [Accepted: 01/22/2023] [Indexed: 09/10/2023]
Abstract
Kounis syndrome is defined as cardiovascular symptoms that occur secondary to allergic or hypersensitivity insults, and is also called allergic angina and allergic myocardial infarction. We report a case of pre-operative ceftriaxone-induced Kounis syndrome with no evident dermatological manifestation, and describe our diagnostic dilemma. The patient was symptomatically managed and discharged in stable condition with a warning against future use of ceftriaxone.
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Affiliation(s)
- S Ali
- Department of Anaesthesiology and Critical Care, J.N. Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - M Athar
- Department of Anaesthesiology and Critical Care, J.N. Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India.
| | - R Rahman
- Department of Anaesthesiology and Critical Care, J.N. Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - F Rehman
- Department of Anaesthesiology and Critical Care, J.N. Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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Rahman R, Siddique T, Nipa FA, Sultana S, Devi P, Islam F, Nainu F, Obaidullah AJ, Emran TB, Khatun MR. Bark extract of Chaetocarpus castanocarpus (Roxb.) exhibits potent sedative, anxiolytic, and antidepressant effects through an in vivo approach in Swiss albino mice. Eur Rev Med Pharmacol Sci 2024; 28:1202-1212. [PMID: 38375725 DOI: 10.26355/eurrev_202402_35359] [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] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
OBJECTIVE Standard phytochemical investigations were performed to identify the secondary metabolites in the methanol extract of Chaetocarpus castanocarpus bark (MECC) and investigate the neuropharmacological potential of MECC in Swiss albino mice. MATERIALS AND METHODS Swiss albino mice were used in the forced swimming test (FST) and tail suspension test (TST) to evaluate the antidepressant effect of MECC. Also, the hole board test (HBT) and elevated plus maze (EPM) were conducted to examine anxiolytic activities. In contrast, the open field test (OFT) and hole cross test (HCT) were employed to evaluate sleeping disorders. RESULTS Alkaloids, glycosides, flavonoids, terpenoids, coumarins, and tannins are only a few secondary metabolites identified in MECC by qualitative and quantitative phytochemical investigations. The oral administration of MECC considerably shortened the immobility duration during FST and TST. Encouraging dose-dependent anxiolytic effects were also observed in all relevant experiments compared to the control. Additionally, during the OFT and HCT assessment, a noteworthy decline in the locomotor activities of the experimental animals was observed. CONCLUSIONS The results of this investigation suggest that the Chaetocarpus castanocarpus bark is a possible source of therapeutic candidates for treating neurological disorders.
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Affiliation(s)
- R Rahman
- Department of Pharmacy, International Islamic University Chittagong, Chittagong, Bangladesh.
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Bracegirdle L, Stubbs M, Rahman R, Jackson AIR, Burton-Papp HC, Chambers R, Gupta S, Grocott MPW, Dushianthan A. Organisation and delivery of a dedicated multidisciplinary prone ventilation team in the intensive care unit: Strategies and lessons from COVID-19. PLoS One 2023; 18:e0296379. [PMID: 38153940 PMCID: PMC10754430 DOI: 10.1371/journal.pone.0296379] [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: 08/01/2023] [Accepted: 12/11/2023] [Indexed: 12/30/2023] Open
Abstract
BACKGROUND COVID-19 placed immense strain on healthcare systems, necessitating innovative responses to the surge of critically ill patients, particularly those requiring mechanical ventilation. In this report, we detail the establishment of a dedicated critical care prone positioning team at University Hospital Southampton in response to escalating demand for prone positioning during the initial wave of the pandemic. METHODS The formation of a prone positioning team involved meticulous planning and collaboration across disciplines to ensure safe and efficient manoeuvrers. A comprehensive training strategy, aligned with national guidelines, was implemented for approximately 550 staff members from a diverse background. We surveyed team members to gain insight to the lived experience. RESULTS A total of 78 full-time team members were recruited and successfully executed over 1200 manoeuvres over an eight-week period. Our survey suggests the majority felt valued and expressed pride and willingness to participate again should the need arise. CONCLUSION The rapid establishment and deployment of a dedicated prone positioning team may have contributed to both patient care and staff well-being. We provide insight and lessons that may be of value for future respiratory pandemics. Future work should explore objective clinical outcomes and long-term sustainability of such services.
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Affiliation(s)
- Luke Bracegirdle
- Shackleton Department of Anaesthesia, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
- Southampton NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
- Faculty of Medicine, University of Southampton, University Hospital Southampton, Southampton, United Kingdom
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Matthew Stubbs
- Shackleton Department of Anaesthesia, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Rezaur Rahman
- Shackleton Department of Anaesthesia, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Alexander I. R. Jackson
- Shackleton Department of Anaesthesia, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
- Southampton NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
- Faculty of Medicine, University of Southampton, University Hospital Southampton, Southampton, United Kingdom
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Helmi C. Burton-Papp
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Robert Chambers
- Shackleton Department of Anaesthesia, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Sanjay Gupta
- Shackleton Department of Anaesthesia, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Michael P. W. Grocott
- Shackleton Department of Anaesthesia, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
- Southampton NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
- Faculty of Medicine, University of Southampton, University Hospital Southampton, Southampton, United Kingdom
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Ahilanandan Dushianthan
- Southampton NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
- Faculty of Medicine, University of Southampton, University Hospital Southampton, Southampton, United Kingdom
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
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Amirah N, Rahman R. Mental Health Status during COVID-19 Pandemic and its Relationship with Economic Hardship and Financial Threat among Rural Population in Sarawak, Malaysia. Kathmandu Univ Med J (KUMJ) 2023; 21:149-155. [PMID: 38628007] [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: 04/19/2024]
Abstract
Background During the COVID-19 pandemic, job and income loss, social isolation may aggravate mental health, particularly among the most vulnerable groups. Objective To assess the current mental health situation among the rural population in Samarahan district and determine the relationship between economic hardships, financial threats, and mental health status. Method This study was a cross-sectional study conducted among the 530 households in the Samarahan district. A multistage cluster sampling technique was used to select the participants in this study. Data were collected by face-to-face interview using a structured questionnaire. The mental health status was assessed by using a validated and translated DASS-21 scale. Data analysis was done by SPSS version 27.0. A p-value of ≤ .05 was considered statistically significant. Result Analysis showed that two-thirds of the respondents (66.6%) had no mental health problem. Meanwhile, 22.4% had anxiety, 1% had depression, and 0.19% had stress. Anxiety and depression accounted for 5.8% and stress and anxiety 1.3%. However, 2.64% had stress, anxiety, and depression. In bivariate analysis, age, monthly income, type of job, economic hardship, and expenditure difference appeared to be significant predictors of mental health problems (p < .05). Conclusion Depression, anxiety, and stress pose a significant threat to the rural population's health. Therefore, public health practitioners and policymakers need to address this to minimise the pandemic's impact on mental health and provide psychological support, particularly among the most affected group.
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Affiliation(s)
- N Amirah
- Department of Community Medicine and Public Health, Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia
| | - R Rahman
- Department of Community Medicine and Public Health Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia
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MAHJABIN S, Rahman R, Haque E, Islam N. WCN23-0544 CLINICAL PROFILE, IMMUNOSUPPRESSIVE MANAGMENT AND OUTCOME IN ADULT RENAL ALLOGRAFT RECIPIENTS WITH COVID-19 INFECTION: A CASE SERIES FROM SINGLE CENTRE IN BANGLADESH. Kidney Int Rep 2023. [PMCID: PMC10025673 DOI: 10.1016/j.ekir.2023.02.1007] [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: 03/22/2023] Open
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Yousuf S, Mahmood S, Rahman R, Khatun R, Tanzin F, Arzoo S, Ferdous NE. Efficacy and Safety of Repeated Use of Ulipristal Acetate in Uterine Fibroids. Mymensingh Med J 2023; 32:168-176. [PMID: 36594317] [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: 06/17/2023]
Abstract
Uterine fibroids are benign tumor of the uterus that often appear during child bearing ages. Medical treatments are considered the first-line treatment to preserve fertility, avoid or delaying surgery. This randomized control study was carried out in OPD of Obstetrics and Gynecology Department of BSMMU, Dhaka, Bangladesh from May 2018 to March 2019 to evaluate the efficacy and safety of ulipristal acetate (5mg) once daily in reproductive women with three months treatment courses. Total 52 samples with symptomatic uterine fibroids for treatment course-1, among them 36 were needed for treatment course-2 which was slow or non-responding in treatment course-1. Main outcome measures were amenorrhea, controlled bleeding, fibroid volume, anaemia, quality of life. Sixty one percent (61.0%) of patients were achieved amenorrheic during both treatment courses. Ninety percent (90.0%) patients were control of bleeding during both treatment courses. In treatment course-1, reductions from baseline in fibroid volume were 62.70%, whereas in course-2, reductions in fibroid volume were 75.33%. Five percent (5.0%) of patients were discontinuing Ulipristal acetate due to adverse effects. Renal and liver function tests were performed before and after each course of treatment. The level of creatinine, SGPT in the blood for both treatment courses had no statistically significant effects. Ulipristal acetate may be an alternative to surgical treatment, the safety profiles and prolong effects with improvement of symptoms, quality of life after cessation of drugs. Repeated use of drugs reduces the size and also improves the patient's condition.
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Affiliation(s)
- S Yousuf
- Dr Shereen Yousuf, Medical Officer, Department of Obstetrics and Gynaecology, BSMMU, Dhaka, Bangladesh; E-mail:
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Pappu NI, Öberg I, Byrskog U, Raha P, Moni R, Akhtar S, Barua P, Das SR, De S, Jyoti HJ, Rahman R, Sinha GR, Erlandsson K. The commitment to a midwifery centre care model in Bangladesh: An interview study with midwives, educators and students. PLoS One 2023; 18:e0271867. [PMID: 37036838 PMCID: PMC10085017 DOI: 10.1371/journal.pone.0271867] [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] [Received: 07/09/2022] [Accepted: 03/24/2023] [Indexed: 04/11/2023] Open
Abstract
BACKGROUND Midwifery-led care is a key factor in reducing maternal and new-born mortality globally. In Bangladesh, only a third of births are attended by professionals and almost 70% of births occur outside healthcare facilities. Midwifery is a relatively new profession in Bangladesh and a midwifery centre care model has only recently been introduced. This study aims to explore the willingness within the healthcare system to support a greater role for midwifery centres in maternity services. METHODS Data were collected through individual semi-structured interviews with 55 midwives, midwifery educators and final year midwifery students. Two of the midwifery educators were principals of nursing institutes involved in the government's midwifery leadership and considered as experts in the midwifery care system. The data was analysed using qualitative content analysis. The transcribed interviews comprised 150 pages. The study received ethical approval from the Directorate General of Nursing and Midwifery in Bangladesh. RESULTS One main category emerged from the study: "The foundations of a midwifery centre care model need to be strengthened for the sustainable implementation of midwifery centres in Bangladesh to continue". Five additional categories were identified: 1) The midwifery centre care model is inaccessible for communities, 2) Striving for acceptable standards of care within a midwifery centre care model is not a priority 3) Respectful, woman-centred care is weak, 4) Community engagement with the midwifery centre care model is insufficient, and 5) The midwifery centre care model is not integrated into the healthcare system. These categories were supported by the identification of 11 sub-categories. CONCLUSION The willingness to commit to a midwifery centre care model is not yet in place in Bangladesh. Advocacy, information, and education about the benefits of normal birth assisted by professional midwives is needed at all levels of Bangladeshi society.
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Affiliation(s)
| | - Ida Öberg
- School of Health and Welfare, Dalarna University, Falun, Sweden
| | - Ulrika Byrskog
- School of Health and Welfare, Dalarna University, Falun, Sweden
| | - Pronita Raha
- School of Health and Welfare, Dalarna University, Falun, Sweden
| | - Ratna Moni
- School of Health and Welfare, Dalarna University, Falun, Sweden
| | - Shaheen Akhtar
- School of Health and Welfare, Dalarna University, Falun, Sweden
| | - Priti Barua
- School of Health and Welfare, Dalarna University, Falun, Sweden
| | - Sujata Rani Das
- School of Health and Welfare, Dalarna University, Falun, Sweden
| | - Shipra De
- School of Health and Welfare, Dalarna University, Falun, Sweden
| | | | - Rezaur Rahman
- School of Health and Welfare, Dalarna University, Falun, Sweden
| | - Gita Rani Sinha
- School of Health and Welfare, Dalarna University, Falun, Sweden
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Elhalawani H, Hammoudeh L, Cagney D, Qian J, Martin A, Zgrabik J, Meyers J, Pataki K, Martin K, Khouj Y, Verry C, Bi W, Arnaout O, Christ S, Alexander B, Tanguturi S, Rahman R, Haas-Kogan D, Aizer A. Leveraging Serial MRI Radiomics and Machine Learning to Predict Risk of Radiation Necrosis in Patients with Brain Metastases Managed with Stereotactic Radiation and Immunotherapy. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.954] [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: 10/31/2022]
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Dushianthan A, Griffiths M, Hall F, Nolan K, Richardson D, Skinner B, Matthews L, Charles D, Elsheikh R, Pignatari R, Rahman R, Theivendrampillai S, Egglestone R, Stokes A, Danibenvenutti G, Stewart M, Celinski M, Cusack R, Gupta S, Saeed K. Caring for COVID-19 patients through a pandemic in the intensive care setting: A narrative review. WIREs Mech Dis 2022; 14:e1577. [PMID: 35835688 PMCID: PMC9350295 DOI: 10.1002/wsbm.1577] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 01/30/2022] [Revised: 05/20/2022] [Accepted: 06/23/2022] [Indexed: 12/21/2022]
Abstract
Since the declaration of the novel SARS-CoV-2 virus pandemic, health systems/ health-care-workers globally have been overwhelmed by a vast number of COVID-19 related hospitalizations and intensive care unit (ICU) admissions. During the early stages of the pandemic, the lack of formalized evidence-based guidelines in all aspects of patient management was a significant challenge. Coupled with a lack of effective pharmacotherapies resulted in unsatisfactory outcomes in ICU patients. The anticipated increment in ICU surge capacity was staggering, with almost every ICU worldwide being advised to increase their capacity to allow adequate care provision in response to multiple waves of the pandemic. This increase in surge capacity required advanced planning and reassessments at every stage, taking advantage of experienced gained in combination with emerging evidence. In University Hospital Southampton General Intensive Care Unit (GICU), despite the initial lack of national and international guidance, we enhanced our ICU capacity and developed local guidance on all aspects of care to address the rapid demand from the increasing COVID-19 admissions. The main element of this success was a multidisciplinary team approach intertwined with equipment and infrastructural reorganization. This narrative review provides an insight into the approach adopted by our center to manage patients with COVID-19 critical illness, exploring the initial planning process, including contingency preparations to accommodate (360% capacity increment) and adaptation of our management pathways as more evidence emerged throughout the pandemic to provide the most appropriate levels of care to our patients. We hope our experience will benefit other intensive care units worldwide. This article is categorized under: Infectious Diseases > Genetics/Genomics/Epigenetics.
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Affiliation(s)
- Ahilanadan Dushianthan
- NIHR Southampton Clinical Research Facility and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK.,General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK.,Faculty of Medicine, University of Southampton, Southampton, UK
| | - Melanie Griffiths
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Fiona Hall
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Kathleen Nolan
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Dominic Richardson
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Benjamin Skinner
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Lewis Matthews
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - David Charles
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Razaz Elsheikh
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Renato Pignatari
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Rezaur Rahman
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | | | - Rebecca Egglestone
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Aaron Stokes
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Giovani Danibenvenutti
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Michael Stewart
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Michael Celinski
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Rebecca Cusack
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Sanjay Gupta
- General Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Kordo Saeed
- Faculty of Medicine, University of Southampton, Southampton, UK.,Department of Infection, Microbiology Laboratory, University Hospital Southampton NHS Foundation Trust, Southampton, UK
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Woon E, Rahman R, Ibeto L, MacLaran K, Norman-Taylor J, Nikolaou D. P-703 Developing individualized treatment strategies using detailed subgroup analysis to optimise pregnancy outcomes for women 40 and above. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.652] [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: 11/13/2022] Open
Abstract
Abstract
Study question
What are the prognostic factors and treatment strategies for women 40 and above within different ovarian reserve subgroups?
Summary answer
Women in each ovarian reserve subgroup have different prognostic factors of pregnancy success and specific treatment strategies are needed for each subgroup.
What is known already
The number of women 40 and above seeking subfertility treatment is increasing and many are willing to undergo treatment despite extremely poor prognosis. POSEIDON criteria suggested the usage of ovarian reserve and female age as a basis for the study of the management of women in different prognostic categories. However, this classification may not be detailed enough to lead to specific recommendations for individualised management in women 40 and above, as there is rapid decline of oocyte quality and quantity. Large observational studies may lack finer detail due to challenges in recruiting women within different ovarian reserve subgroups.
Study design, size, duration
We carried out a detailed retrospective analysis of 382 IVF/ICSI cycles for 253 women from January 2019 to December 2021 in a special clinical and academic program for reproductive ageing and fertility. Inclusion criteria were all women who had IVF/ICSI cycles aged 40 and over. Analysis was done for all fresh cycles including cancelled cycles, failed fertilization, no eggs collected and embryo arrest. Cycles resulting in freezing of all embryos were excluded in analysis.
Participants/materials, setting, methods
The participants were divided into three main subroups: Group A, “normal ovarian reserve” (AMH 2.5-29.9pmol/l, n = 271 cycles); Group B, “extremely poor ovarian reserve” (AMH <2.5pmol/l, n = 85 cycles); and Group C “extremely high ovarian reserve” (PCOS or AMH ≥30.0pmol/l, n = 26 cycles). Chi-square and Mann-Whitney U tests were used to compare pregnant and non-pregnant groups for nominal and continuous data respectively. Multi-variate logistic regression was performed when indicated. All descriptive statistics are stated in median and percentages.
Main results and the role of chance
In Group A, univariate analysis showed that pregnancies were associated with lower female (41 vs 42) and male age (40 vs 43.5), administering long agonist versus antagonist protocol (73% vs 27%), the absence of androgen pretreatment (12% vs 88%), higher oestradiol level (7681pmol/l vs 6114pmol/l), higher number of oocytes retrieved (8 vs 4) and normally fertilized (4 vs 3), and embryo transfer on day 3 compared to 2 or 5 (all p < 0.05). The use of combined FSH/LH vs FSH only for ovarian stimulation given for 12 days at 300IU daily, higher endometrial thickness (11.3mm vs 10.6mm), IVF versus ICSI (65% vs 35%), and addition of subcutaneous progesterone for luteal support versus vaginal progesterone only (51% vs 43%) were trending towards but were not significant (p > 0.05). Multivariate logistic regression analysis revealed lower female and male age, less number of IVF cycles, and higher number of embryos transferred as independent factors contributing to pregnancy. In Group B, significant predictors of pregnancy included younger female age, higher gravidity, previous successful IVF and higher number of eggs fertilized (p < 0.05). In Group C, factors that contributed to positive pregnancy outcome included antagonist cycles versus agonist and usage of FSH and LH versus FSH alone (p > 0.05).
Limitations, reasons for caution
The retrospective nature of the study design limits control of potential confounding variables. Although there were clear trends, in a few sub-categories there were insufficient numbers to reach statistical significance. Continuing data collection is necessary to achieve adequate power for smaller groups especially Group B and C.
Wider implications of the findings
This detailed analysis will allow us to better understand the prognostic factors in women 40 and above, especially for women with extremes of ovarian reserve, who may benefit substantially from individualised care. We recommend standardisation of data collection and development of artificial intelligence algorithms to streamline management in the future.
Trial registration number
N/A
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Affiliation(s)
- E.V Woon
- Chelsea and Westminster Hospital NHS Foundation Trust, Assisted Conception Unit , London, United Kingdom
- Imperial College London, Department of Metabolism- Digestion and Reproduction , London, United Kingdom
| | - R Rahman
- Chelsea and Westminster Hospital NHS Foundation Trust, Assisted Conception Unit , London, United Kingdom
| | - L Ibeto
- Chelsea and Westminster Hospital NHS Foundation Trust, Assisted Conception Unit , London, United Kingdom
| | - K MacLaran
- Chelsea and Westminster Hospital NHS Foundation Trust, Assisted Conception Unit , London, United Kingdom
| | - J Norman-Taylor
- Chelsea and Westminster Hospital NHS Foundation Trust, Assisted Conception Unit , London, United Kingdom
| | - D Nikolaou
- Chelsea and Westminster Hospital NHS Foundation Trust, Assisted Conception Unit , London, United Kingdom
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12
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Arora S, Singh GK, Das P, Rahman R, Bellad P, Shrivastav R, Bahuguna A, Sapra D, Gupta A. A study of COVID‐19 vaccine (Covishield) induced dermatological adverse effects from India. J Eur Acad Dermatol Venereol 2022; 36:e402-e404. [DOI: 10.1111/jdv.17951] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/25/2021] [Accepted: 01/19/2022] [Indexed: 11/26/2022]
Affiliation(s)
- S Arora
- Department of Dermatology Base Hospital Delhi Cantt & Army College of Medical Sciences New Delhi India
| | - G K Singh
- Department of Dermatology Base Hospital Delhi Cantt & Army College of Medical Sciences New Delhi India
| | - P Das
- Department of Dermatology Base Hospital Delhi Cantt & Army College of Medical Sciences New Delhi India
| | - R Rahman
- Department of Physiology Base Hospital Delhi Cantt & Army College of Medical Sciences New Delhi India
| | - P Bellad
- Department of Dermatology Base Hospital Delhi Cantt & Army College of Medical Sciences New Delhi India
| | | | - Amit Bahuguna
- Department of Dermatology Base Hospital Delhi Cantt & Army College of Medical Sciences New Delhi India
| | - Devyani Sapra
- Department of Dermatology Base Hospital Delhi Cantt & Army College of Medical Sciences New Delhi India
| | - Akanksha Gupta
- Department of Dermatology Base Hospital Delhi Cantt & Army College of Medical Sciences New Delhi India
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13
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Payne A, Alfa-Wali M, Rahman R, Bullingham R, Vamadeva S. 596 Redeployment of Surgical Trainees to Intensive Care During the COVID-19 Pandemic: Evaluation of the Impact on Training and Wellbeing. Br J Surg 2021. [PMCID: PMC8524572 DOI: 10.1093/bjs/znab259.860] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Aim The aim of this study was to evaluate the impact of redeployment of surgical trainees to intensive care units (ICUs) during the COVID-19 pandemic in terms of transferrable technical and nontechnical skills and wellbeing. Method This was a survey study consisting of a 23-point questionnaire. The study involved senior house officer level surgical trainees that had been redeployed to the (ICU) across all hospitals in London during the COVID-19 pandemic. The survey was sent to 90 surgical trainees. Thirty-two trainees responded to the questionnaire and were included in the study results. Results All respondents spent between 4 and 8 weeks working in ICU. Prior to redeployment, 78% of participants had previous experience of ICU or an affiliated specialty, and >90% had attended at least 1 educational course with relevance to ICU. There were statistically significant increases in confidence performing central venous cannulation and peripheral arterial catheterisation (p < 0.05). With regards to clinical skills, respondents reported feeling more confident managing ventilated patients, patients on noninvasive ventilation, dialysis, and circulatory failure patients after working in ICU. Respondents (97%) felt that the experience would be beneficial to their future careers but 53% felt the redeployment had a negative impact on their mental health. Conclusions Redeployment of surgical trainees to ICU led to increased confidence in a number of technical and nontechnical skills. However, proactive interventions are needed for training surgeons with regard to their psychological wellbeing in these extraordinary circumstances and to improve workforce planning for future pandemics.
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Affiliation(s)
- A Payne
- Barts Health NHS Trust, London, United Kingdom
| | - M Alfa-Wali
- Imperial Health NHS Trust, London, United Kingdom
| | - R Rahman
- Barts Health NHS Trust, London, United Kingdom
| | | | - S Vamadeva
- Guy's and St Thomas' NHS Trust, London, United Kingdom
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14
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Ortega Franco A, Adamson-Raieste A, Rahman R, Pihlak R, Peters N, Scott JA, Aruketty S, Thomson C, Dransfield S, Henshaw A, Ward A, Cutts T, Carter L, Thistlethwaite F, Cook N, Graham D, Stevenson J, Krebs M. 44P Value of comprehensive genomic profiling in pre-screening patients for NTRK fusion in STARTRK2 trial: Single centre experience. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.2040] [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] Open
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15
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Rahman R, Bhowmik T, Eluru N, Hasan S. Assessing the crash risks of evacuation: A matched case-control approach applied over data collected during Hurricane Irma. Accid Anal Prev 2021; 159:106260. [PMID: 34171632 DOI: 10.1016/j.aap.2021.106260] [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: 12/07/2020] [Revised: 06/06/2021] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
Recent hurricane experiences have created concerns for transportation agencies and policymakers to find better evacuation strategies, especially after Hurricane Irma-which forced about 6.5 million Floridians to evacuate and caused a significant amount of delay due to heavy congestion. A major concern for issuing an evacuation order is that it may involve a high number of crashes in highways. In this study, we present a matched case-control based approach to understand the factors contributing to the increase in the number of crashes during evacuation. We use traffic data for a period of 5 to 10 min just before the crash occurred. For each crash observation, traffic data are collected from two upstream and two downstream detectors of the crash location. We estimate models for three different conditions: regular period, evacuation period, and combining both evacuation and regular period data. Model results show that, if there exist a high volume of traffic at an upstream station and a high variation of speed at a downstream station, the likelihood of crash occurrence increases. Using a panel mixed binary logit model, we also estimate the effect of evacuation itself on crash risk and find that, after controlling for traffic characteristics, during evacuation the chance of a crash is higher than in a regular period. Our findings have implications for evacuation declarations and highlight the need for better traffic management strategies during evacuation. Future studies may develop advanced real-time crash prediction models which would allow us to deploy proactive countermeasures to reduce crash occurrences during evacuation.
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Affiliation(s)
- Rezaur Rahman
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, 12800 Pegasus Drive, Orlando, FL 32816, United States.
| | - Tanmoy Bhowmik
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, 12800 Pegasus Drive, Orlando, FL 32816, United States.
| | - Naveen Eluru
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, 12800 Pegasus Drive, Orlando, FL 32816, United States.
| | - Samiul Hasan
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, 12800 Pegasus Drive, Orlando, FL 32816, United States.
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16
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Banerjee S, Grochot R, Shinde R, Lima J, Krebs M, Rahman R, Little M, Tunariu N, Curcean A, Badham H, Mahmud M, Turner A, Parmar M, Yap C, Minchom A, Lopez J, de Bono J, Banerji U. 725MO Phase I study of the combination of the dual RAF/MEK inhibitor VS-6766 and the FAK inhibitor defactinib: Results of efficacy in low grade serous ovarian cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1168] [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: 11/30/2022] Open
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17
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Billy Graham Mariam N, Rahman R, Mistry H, Aruketty S, Adamson-Raieste A, Church M, Scott JA, Carter L, Thistlethwaite F, Krebs M, Cook N, Graham D. 1849P Ethnicity and socioeconomic deprivation in early phase clinical trials in a UK tertiary referral centre. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.737] [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] Open
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18
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Browne I, Chew S, Fennelly D, Crown J, Murray H, Rahman R, McCaffrey J, Kelly C, Osman N. 57P The efficacy and safety of pembrolizumab in advanced cervical cancer: A real-world treatment study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.544] [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: 11/29/2022] Open
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19
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Abstract
BACKGROUND Biomarkers that predict treatment response are the foundation of precision medicine in clinical decision-making and have the potential to significantly improve the efficiency of clinical trials. Such biomarkers may be identified before clinical testing but many trials enroll unselected populations. We hypothesized that time-varying treatment effects in unselected trials may result from identifiable responder subpopulations that may have associated biomarkers. MATERIALS AND METHODS We first simulated scenarios of clinical trials with biomarker populations of varying prevalence and prognostic and predictive associations to illustrate the impact of subgroup-specific effects on overall population estimates. To show a real-world example of time-dependent treatment effects resulting from a prognostic and predictive biomarker, we re-analyzed data from a published clinical trial (RTOG, Radiation Therapy Oncology Group, 9402). We then demonstrated a quantitative framework to fit survival data from clinical trials using statistical models incorporating known estimates of biomarker prevalence and prognostic value to prioritize predictive biomarker hypotheses. RESULTS Our simulation studies demonstrate how biomarker subgroups that are both predictive and prognostic can manifest as time-dependent treatment effects in overall populations. RTOG 9402 provides a representative example where 1p/19q co-deletion and IDH mutation biomarker-specific effects led to time-varying treatment effects and a considerable deviation from proportional hazards in the overall trial population. Finally, using biomarker data from The Cancer Genome Atlas, we were able to generate statistical models that correctly identified and prioritized a commonly used biomarker through retrospective analysis of published clinical trial data. CONCLUSIONS Biomarkers that are both predictive and prognostic can result in characteristic changes in survival results. Retrospectively analyzing survival data from clinical trials may highlight potential indications for which an underlying predictive biomarker may be found.
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Affiliation(s)
- R Rahman
- Department of Radiation Oncology, Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston; Department of Radiation Oncology, Harvard Medical School, Boston
| | - S Ventz
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston; Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston
| | - G Fell
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston
| | - A M Vanderbeek
- Department of Biostatistics, Columbia University Mailman School of Public Health, New York, USA
| | - L Trippa
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston; Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston
| | - B M Alexander
- Department of Radiation Oncology, Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston; Department of Radiation Oncology, Harvard Medical School, Boston.
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20
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Uddin MJ, Rahman AF, Rahman S, Momenuzzaman NM, Rahman A, Majumder AS, Mohibullah AM, Chowdhury AH, Malik FN, Ahsan SA, Mohsin K, Haq MM, Chowdhury AW, Sohrabuzzaman AM, Rahman M, Chakraborty B, Rahman R, Khan SR, Khan KN, Reza AM, Hussain KS, Rashid M, Choudhury AK, Karmakar KK, Ali Z, Alam N, Rahman Z, Kabir CS, Banik D, Dutta A, Badiuzzaman M, Islam AW, Sium AH, Hossain MD, Ahmed N, Jahan J, Islam MS, Arefin MM, Cader FA, Banerjee SK, Hoque H, Shofiuddin M, Selim A, Das PK, Ahmed M, Dutto B, Alam S, Paul GK, Paul SK, Azam MG. National Clinical Guidance for the Management of Cardiovascular Intervention in the COVID-19 Pandemic: From Bangladesh Society of Cardiovascular Interventions (BSCI). Mymensingh Med J 2020; 29:488-494. [PMID: 32506111] [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: 06/11/2023]
Abstract
Since the first recorded case of SARS-CoV-2 in Bangladesh on 8th March 2020, COVID-19 has spread widely through different regions of the country, resulting in a necessity to re-evaluate the delivery of cardiovascular services, particularly procedures pertaining to interventional cardiology in resource-limited settings. Given its robust capacity for human-to-human transmission and potential of being a nosocomial source of infection, the disease has specific implications on healthcare systems and health care professionals faced with performing essential cardiac procedures in patients with a suspected or confirmed diagnosis of COVID-19. The limited resources in terms of cardiac catheterization laboratories that can be designated to treat only COVID positive patients are further compounded by the additional challenges of unavailability of widespread rapid testing on-site at tertiary cardiac hospitals in Bangladesh. This document prepared for our nation by the Bangladesh Society of Cardiovascular Interventions (BSCI) is intended to serve as a clinical practice guideline for cardiovascular health care professionals, with a focus on modifying standard practice of care during the COVID-19 pandemic, in order to ensure continuation of adequate and timely treatment of cardiovascular emergencies avoiding hospital-based transmission of SARS-COV-2 among healthcare professionals and the patients. This is an evolving document based on currently available global data and is tailored to healthcare systems in Bangladesh with particular focus on, but not limited to, invasive cardiology facilities (cardiac catheterization, electrophysiology & pacing labs). This guideline is limited to the provision of cardiovascular care, and it is expected that specific targeted pharmaco-therapeutics against SARS-CoV-2 be prescribed as stipulated by the National Guidelines on Clinical Management of Corona virus Disease 2019 (COVID-19) published by the Director General of Health Services, Ministry of Health and Family Welfare of Bangladesh.
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Affiliation(s)
- M J Uddin
- Professor MG Azam, National Institute of Cardiovascular Diseases, Dhaka, Bangladesh; E-mail:
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21
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Keihani S, Kluever V, Mandad S, Bansal V, Rahman R, Fritsch E, Gomes LC, Gärtner A, Kügler S, Urlaub H, Wren JD, Bonn S, Rizzoli SO, Fornasiero EF. The long noncoding RNA neuroLNC regulates presynaptic activity by interacting with the neurodegeneration-associated protein TDP-43. Sci Adv 2019; 5:eaay2670. [PMID: 31897430 PMCID: PMC6920028 DOI: 10.1126/sciadv.aay2670] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 10/23/2019] [Indexed: 05/26/2023]
Abstract
The cellular and the molecular mechanisms by which long noncoding RNAs (lncRNAs) may regulate presynaptic function and neuronal activity are largely unexplored. Here, we established an integrated screening strategy to discover lncRNAs implicated in neurotransmitter and synaptic vesicle release. With this approach, we identified neuroLNC, a neuron-specific nuclear lncRNA conserved from rodents to humans. NeuroLNC is tuned by synaptic activity and influences several other essential aspects of neuronal development including calcium influx, neuritogenesis, and neuronal migration in vivo. We defined the molecular interactors of neuroLNC in detail using chromatin isolation by RNA purification, RNA interactome analysis, and protein mass spectrometry. We found that the effects of neuroLNC on synaptic vesicle release require interaction with the RNA-binding protein TDP-43 (TAR DNA binding protein-43) and the selective stabilization of mRNAs encoding for presynaptic proteins. These results provide the first proof of an lncRNA that orchestrates neuronal excitability by influencing presynaptic function.
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Affiliation(s)
- S. Keihani
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Excellence Cluster Multiscale Bioimaging, 37073 Göttingen, Germany
| | - V. Kluever
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Excellence Cluster Multiscale Bioimaging, 37073 Göttingen, Germany
| | - S. Mandad
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Excellence Cluster Multiscale Bioimaging, 37073 Göttingen, Germany
- Department of Clinical Chemistry, University Medical Center Göttingen, 37077 Göttingen, Germany
| | - V. Bansal
- Institute of Medical Systems Biology, Center for Molecular Neurobiology (ZMNH), UKE, 20246 Hamburg, Germany
- German Center for Neurodegenerative Diseases (DZNE), 72076 Tübingen, Germany
| | - R. Rahman
- Institute of Medical Systems Biology, Center for Molecular Neurobiology (ZMNH), UKE, 20246 Hamburg, Germany
| | - E. Fritsch
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Excellence Cluster Multiscale Bioimaging, 37073 Göttingen, Germany
| | - L. Caldi Gomes
- Department of Neurology, University Medical Center Göttingen, 37073 Göttingen, Germany
- Center for Biostructural Imaging of Neurodegeneration (BIN), 37075 Göttingen, Germany
| | - A. Gärtner
- VIB Center for the Biology of Disease and Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - S. Kügler
- Department of Neurology, University Medical Center Göttingen, 37073 Göttingen, Germany
| | - H. Urlaub
- Department of Clinical Chemistry, University Medical Center Göttingen, 37077 Göttingen, Germany
- Bioanalytical Mass Spectrometry Group, Max Planck Institute of Biophysical Chemistry, 37077 Göttingen, Germany
| | - J. D. Wren
- Department of Genes and Human Disease, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - S. Bonn
- Institute of Medical Systems Biology, Center for Molecular Neurobiology (ZMNH), UKE, 20246 Hamburg, Germany
- German Center for Neurodegenerative Diseases (DZNE), 72076 Tübingen, Germany
| | - S. O. Rizzoli
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Excellence Cluster Multiscale Bioimaging, 37073 Göttingen, Germany
- Center for Biostructural Imaging of Neurodegeneration (BIN), 37075 Göttingen, Germany
| | - E. F. Fornasiero
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Excellence Cluster Multiscale Bioimaging, 37073 Göttingen, Germany
- Center for Biostructural Imaging of Neurodegeneration (BIN), 37075 Göttingen, Germany
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22
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Smith S, Serra R, Rowlinson J, Gorelick N, Veal G, Shakesheff K, Brem H, Grundy R, Tyler B, Rahman R. P11.60 Neurosurgical delivery of the poly ADP ribose polymerase-1 inhibitor olaparib from a thermo-responsive biodegradable paste potentiates radiotherapy and prolongs survival. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.206] [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: 11/14/2022] Open
Abstract
Abstract
BACKGROUND
There has been considerable interest in repurposing the poly ADP ribose polymerase inhibitor and purported radiosensitiser olaparib (Lynparza), with a recent dose escalation study of olaparib plus temozolomide in recurrent GBM showing good tolerance. Due to systemic therapy-associated caveats such as dose-limiting toxicities and blood-brain-barrier penetration, here we assess localised post-surgical delivery of olaparib from our previously developed PLGA/PEG thermo-sensitive biodegradable paste.
MATERIAL AND METHODS
Metabolic and clonogenic assays were used to assess effects on proliferation and clonal growth upon in vitro glioma exposure to olaparib. Flow cytometry and Annexin V/Propidium iodide were used to determine apoptosis. The 9L high-grade glioma orthotopic allograft model was utilised to assess survival upon intra-cavity olaparib delivery.
RESULTS
Metabolic and clonogenic assays revealed impaired proliferation and clonal growth respectively, upon acute exposure of high-grade glioma cells to olaparib (3–5µM), an effect dramatically potentiated with 3Gy radiation. Flow cytometry of Annexin V+/Propidium iodide+ rodent and human high-grade glioma cells, revealed a significant cell proportion increase at late stage apoptosis when exposed to 2–3µM olaparib and 3Gy radiation (relative to untreated, olaparib alone or radiation alone). A high-grade glioma orthotopic allograft study revealed a significant overall survival benefit of locally-delivered 10% and 20% w/w (drug:polymer ratio) olaparib via PLGA/PEG paste post-surgery with adjuvant radiotherapy, compared to surgery/oral temozolomide/radiotherapy (GBM standard-of-care) and surgery/systemic olaparib (95 vs. 44 vs. 30 days respectively). A more pronounced survival benefit, as measured by number of animals surviving long-term, was observed with combined PLGA/PEG/olaparib/temozolomide/radiotherapy or PLGA/PEG/olaparib/etoposide/radiotherapy, relative to standard-of-care (95 vs. 44 days). Clinical correlation was determined using RNAseq data from 10 GBM patients, showing significantly elevated levels of apoptosis-inducing factor-1 in 5-aminolevulinic acid (5ALA)+ fluorescence-activated cell sorted populations (i.e. purified tumour cells from the invasive margin), relative to 5ALA- cells, confirming PARP-1 activity in infiltrative tumour cells.
CONCLUSION
Collectively our data supports a clinical rationale for localised olaparib delivery with adjuvant radiotherapy.
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Affiliation(s)
- S Smith
- University of Nottingham, Nottingham, United Kingdom
| | - R Serra
- Johns Hopkins University, Baltimore, MD, United States
| | - J Rowlinson
- University of Nottingham, Nottingham, United Kingdom
| | - N Gorelick
- Johns Hopkins University, Baltimore, MD, United States
| | - G Veal
- Newcastle University, Newcastle, United Kingdom
| | - K Shakesheff
- University of Nottingham, Nottingham, United Kingdom
| | - H Brem
- Johns Hopkins University, Baltimore, MD, United States
| | - R Grundy
- University of Nottingham, Nottingham, United Kingdom
| | - B Tyler
- Johns Hopkins University, Baltimore, MD, United States
| | - R Rahman
- University of Nottingham, Nottingham, United Kingdom
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23
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Rowlinson J, McCrorie P, Smith S, Barrett D, Kim D, Grundy R, Scurr D, Rahman R. P11.62 Brain distribution models to select polymer-delivered drugs for the intra-cavity treatment of malignant glioma. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.208] [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: 11/13/2022] Open
Abstract
Abstract
BACKGROUND
Conventional oral or intravenous chemotherapy distributes drugs to the whole body whereby systemic toxicity to healthy parts of the body (e.g. bone marrow failure) limits the maximum dose that can be achieved in the brain. This presents a particular concern for CNS tumours where the blood-brain-barrier (BBB) restricts drug influx from the circulation. The ability to deliver chemotherapy locally at the tumour site offers the opportunity to target residual cancer cells post-surgery whilst minimising systemic toxicity. We have developed a poly(lactic-co-glycolic acid)/poly(ethylene glycol) (PLGA/PEG) polymer matrix that forms a porous paste at room temperature when mixed with chemotherapy-containing saline, solidifying only at body temperature, with close apposition to the irregular surgical cavity. It is important that we can observe whether the drugs released from PLGA/PEG can penetrate brain parenchyma beyond the surgical resection margin at therapeutic doses. Currently the only way to measure the distribution of drugs in the body is to inject radioactive drugs into an animal. We aim to establish drug distribution parameters using label-free mass spectrometry imaging methods, prior to selection of drug formulations for clinically-relevant in vivo models. Drugs that penetrate the brain the furthest will be identified as good candidates for localised brain cancer drug delivery using PLGA/PEG paste.
MATERIAL AND METHODS
Diffusion rates were measured by examining the proportion of olaparib, dasatnib, carboplatin, etoposide, paclitaxel and gemcitabine at 2mg/ml concentration, which passes through 1mm slices of rat brain tissue within Franz cell chambers over a 6 hour period. The spatio-temporal distribution of label-free olaparib and dasatinib within mouse brain homogenate was quantitatively measured using innovative 3D OrbiSIMS, a hybrid time-of-flight / OrbitrapTM secondary ion mass spectrometer.
RESULTS
Within the Franz cell model, carboplatin and gemcitabine showed the highest diffusion rate diffusion at 16.4 and 6.53 µg/cm2/h respectively whereas olaparib, etoposide and paclitaxel were relatively poorly diffused at 1.87, 3.82 and 2.27 µg/cm2/h respectively. The minimum threshold of OrbiSIMS detection for label-free olaparib and dasatinib ions was 0.025 mg/ml and 0.2 mg/ml respectively throughout brain homogenate.
CONCLUSION
This study demonstrates different diffusion rates through brain tissue, between label-free chemotherapy drugs of distinct chemistries, with highest diffusion rates observed for carboplatin and gemcitabine. We also demonstrate label-free detection of olaparib and dasatinib using the innovative 3D OrbiSIMS method. These models will facilitate the rapid identification of agents most amenable for localised biomaterial-based chemotherapy delivery with high brain penetrance.
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Affiliation(s)
- J Rowlinson
- University of Nottingham, UK, Nottingham, United Kingdom
| | - P McCrorie
- University of Nottingham, UK, Nottingham, United Kingdom
| | - S Smith
- University of Nottingham, UK, Nottingham, United Kingdom
| | - D Barrett
- University of Nottingham, UK, Nottingham, United Kingdom
| | - D Kim
- University of Nottingham, UK, Nottingham, United Kingdom
| | - R Grundy
- University of Nottingham, UK, Nottingham, United Kingdom
| | - D Scurr
- University of Nottingham, UK, Nottingham, United Kingdom
| | - R Rahman
- University of Nottingham, UK, Nottingham, United Kingdom
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Rahman R, Clark MD, Collins Z, Traore F, Dioukhane EM, Thiam H, Ndiaye Y, De Jesus EL, Danfakha N, Peters KE, Komarek T, Linn AM, Linn PE, Wallner KE, Charles M, Hasnain M, Peterson CE, Dykens JA. Cervical cancer screening decentralized policy adaptation: an African rural-context-specific systematic literature review. Glob Health Action 2019; 12:1587894. [PMID: 30938248 PMCID: PMC6450494 DOI: 10.1080/16549716.2019.1587894] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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] [Indexed: 01/27/2023] Open
Abstract
Background: Worldwide, nearly 570,000 women are diagnosed with cervical cancer each year, with 85% of new cases in low- and middle-income countries. The African continent is home to 35 of 40 countries with the highest cervical cancer mortality rates. In 2014, a partnership involving a rural region of Senegal, West Africa, was facing cervical cancer screening service sustainability barriers and began adapting regional-level policy to address implementation challenges. Objective: This manuscript reports the findings of a systematic literature review describing the implementation of decentralized cervical cancer prevention services in Africa, relevant in context to the Senegal partnership. We report barriers and policy-relevant recommendations through Levesque’s Patient-Centered Access to Healthcare Framework and discuss the impact of this information on the partnership’s approach to shaping Senegal’s regional cervical cancer screening policy. Methods: The systematic review search strategy comprised two complementary sub-searches. We conducted an initial search identifying 4272 articles, then applied inclusion criteria, and ultimately 19 studies were included. Data abstraction focused on implementation barriers categorized with the Levesque framework and by policy relevance. Results: Our findings identified specific demand-side (clients and community) and supply-side (health service-level) barriers to implementation of cervical cancer screening services. We identify the most commonly reported demand- and supply-side barriers and summarize salient policy recommendations discussed within the reviewed literature. Conclusions: Overall, there is a paucity of published literature regarding barriers to and best practices in implementation of cervical cancer screening services in rural Africa. Many articles in this literature review did describe findings with notable policy implications. The Senegal partnership has consulted this literature when faced with various similar barriers and has developed two principal initiatives to address contextual challenges. Other initiatives implementing cervical cancer visual screening services in decentralized areas may find this contextual reporting of a literature review helpful as a construct for identifying evidence for the purpose of guiding ongoing health service policy adaptation.
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Affiliation(s)
- R Rahman
- a University of Toledo College of Medicine and Life Sciences , Toledo , OH , USA
| | - M D Clark
- b Library of the Health Sciences , University Library, University of Illinois at Chicago , Chicago , IL , USA.,c Department of Medical Education, College of Medicine , University of Illinois at Chicago , Chicago , IL , USA
| | - Z Collins
- d Department of Family Medicine, Institute for Health Research and Policy , University of Illinois at Chicago (UIC) , Chicago , IL , USA
| | - F Traore
- e Region medical de Kedougou , Bureau de la santé de la reproduction, prevention transmission mere enfant du VIH-SIDA , Kedougou , Senegal
| | | | - H Thiam
- g Region medical de Kedougou , Bureau régional de la formation, de la supervision et de la recherche , Kedougou , Senegal
| | - Y Ndiaye
- h Département de Recherche , Sénégal Ministère de la Santé et l'Action Sociale , Dakar , Sénégal
| | - E L De Jesus
- i School of Public Health (SPH) , University of Illinois at Chicago (UIC) , Chicago , IL , USA
| | | | - K E Peters
- k School of Public Health, Division of Community Health Sciences, Illinois Prevention Research Center, Institute for Health Research and Policy , University of Illinois at Chicago (UIC) , Chicago , IL , USA
| | - T Komarek
- l Uniformed Services University , Bethesda , MD , USA
| | - A M Linn
- m School of Public Health, Center for Communications Programs , Johns Hopkins University , Baltimore , MD , USA
| | - P E Linn
- n Logistics Management Institute , Tysons , VA , USA
| | - K E Wallner
- o Elizabeth Glaser Pediatric AIDS Foundation , Washington , DC , USA
| | - M Charles
- p Department of Internal Medicine , University of Illinois at Chicago , Chicago , IL , USA
| | - M Hasnain
- q Department of Family Medicine , University of Illinois at Chicago College of Medicine , Chicago , IL , USA
| | - C E Peterson
- r School of Public Health, Division of Epidemiology & Biostatistics, UI Cancer Center , University of Illinois at Chicago (UIC) , Chicago , IL , USA
| | - J A Dykens
- s Department of Family Medicine, Center for Global Health, Institute for Health Research and Policy, Cancer Center , University of Illinois at Chicago (UIC) , Chicago , IL , USA
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Tabrizi S, Rahman R, Cagney D, Aizer A, Tanguturi S, Arvold N, Reardon D, Lee E, Nayak L, Rinne M, Ligon K, Wen P, Alexander B. Impact of Delay in Initiation of Radiation Therapy in Newly Diagnosed Glioblastoma Patients after Gross Total Resection. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2314] [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: 11/25/2022]
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Rahman R, Sridharan V, Hanna G, Chau N, Lorch J, Kass J, Annino D, Goguen L, Uppaluri R, Haddad R, Tishler R, Margalit D, Schoenfeld J, Huang R. Predicting PD-L1 Expression using Radiomics in Oropharyngeal Cancer Patients Treated with Definitive Radiation. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1054] [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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Golbek A, Reafsnyder S, Rancourt D, Kelly P, Rahman R, Weiss E. Peppermint Oil Fails to Improve Exercise Performance. J Acad Nutr Diet 2018. [DOI: 10.1016/j.jand.2018.06.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Weiss E, Wroble K, Trott M, Schweitzer G, Rahman R, Kelly P. Low-carbohydrate, Ketogenic Diet Impairs Anaerobic Exercise Performance. J Acad Nutr Diet 2018. [DOI: 10.1016/j.jand.2018.06.176] [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: 11/30/2022]
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Suckall N, Tompkins EL, Nicholls RJ, Kebede AS, Lázár AN, Hutton C, Vincent K, Allan A, Chapman A, Rahman R, Ghosh T, Mensah A. A framework for identifying and selecting long term adaptation policy directions for deltas. Sci Total Environ 2018; 633:946-957. [PMID: 29602126 DOI: 10.1016/j.scitotenv.2018.03.234] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/13/2018] [Accepted: 03/20/2018] [Indexed: 06/08/2023]
Abstract
Deltas are precarious environments experiencing significant biophysical, and socio-economic changes with the ebb and flow of seasons (including with floods and drought), with infrastructural developments (such as dikes and polders), with the movement of people, and as a result of climate and environmental variability and change. Decisions are being taken about the future of deltas and about the provision of adaptation investment to enable people and the environment to respond to the changing climate and related changes. The paper presents a framework to identify options for, and trade-offs between, long term adaptation strategies in deltas. Using a three step process, we: (1) identify current policy-led adaptations actions in deltas by conducting literature searches on current observable adaptations, potential transformational adaptations and government policy; (2) develop narratives of future adaptation policy directions that take into account investment cost of adaptation and the extent to which significant policy change/political effort is required; and (3) explore trade-offs that occur within each policy direction using a subjective weighting process developed during a collaborative expert workshop. We conclude that the process of developing policy directions for adaptation can assist policy makers in scoping the spectrum of options that exist, while enabling them to consider their own willingness to make significant policy changes within the delta and to initiate transformative change.
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Affiliation(s)
- Natalie Suckall
- Geography and Environment, University of Southampton, Southampton SO17 1BJ, UK.
| | - Emma L Tompkins
- Geography and Environment, University of Southampton, Southampton SO17 1BJ, UK
| | - Robert J Nicholls
- Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK
| | - Abiy S Kebede
- Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK
| | - Attila N Lázár
- Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK
| | - Craig Hutton
- Geography and Environment, University of Southampton, Southampton SO17 1BJ, UK
| | - Katharine Vincent
- Kulima Integrated Development Solutions (Pty) Ltd, Postnet Suite H79, Private Bag x9118, Pietermaritzburg 3200, South Africa
| | - Andrew Allan
- Centre for Water Law, Policy and Science, School of Law, University of Dundee, Dundee DD1 4HN, UK
| | - Alex Chapman
- Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK
| | - Rezaur Rahman
- Institute of Water and Flood Management at Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
| | - Tuhin Ghosh
- School of Oceanographic Studies, Jadavpur University, Kolkata, West Bengal, India
| | - Adelina Mensah
- Institute for Environment and Sanitation Studies (IESS), University of Ghana, Accra, Ghana
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Jaaks P, Vis D, Barthorpe A, Aben N, Van der Meer D, Lightfoot H, Michaut M, Rahman R, Wessels L, Garnett M. PO-023 A multi-step framework to analyse high-throughput drug combination screens. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.558] [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] Open
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Nasreen S, Nessa A, Islam F, Khanam A, Sultana R, Rahman R, Hossain M. Changes of Peak Expiratory Flow Rate in Adult Asthmatic Patient. Mymensingh Med J 2018; 27:245-250. [PMID: 29769485] [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: 06/08/2023]
Abstract
Asthma is a common pulmonary disorder characterizerized by airway inflammation, airway- hyper reactivity, and reversible airflow obstruction. The classic triad of symptoms is wheezing, chronic episodic dyspnea and chronic cough. The prevalence of asthma increased steadily over the latter part of the last century, first in the developed and then in the developing world. The number of people with asthma in the world may be as high as 334 million. Asthma in Bangladesh appears to be a substantial public health problem: an estimated 11.6 million people including 4.1 million children suffer from asthma-related symptoms. A cross sectional study was conducted from January 1999 to August 1999 on 5642 Bangladeshi people and another same study carried out from November 2009 to April 2010 on 8088 subjects. In 1999 the prevalence of asthma was 6.9% whereas in 2010 it is 6.96%. Airway resistance is always increased during the asthmatic attack. Airways obstruction, such as that caused by asthma, results in a reduced and variable Peak Expiratory Flow Rate (PEFR). PEFR is classically reduced in asthma. Recent asthma guidelines recommended the assessment of severity levels based on the most severe symptoms and peak expiratory flow rate. This descriptive type of cross-sectional study was done to find the changes of Peak expiratory flow rate in adult asthmatic patients and carried out in the Department of Physiology, Mymensingh Medical College, Mymensingh, Bangladesh from July 2014 to January 2016. Fifty (50) male and 50 (fifty) female adult asthmatic patients aged 18-60 years were included in the study group. They are enrolled from the Department of Medicine, Mymensingh Medical College, Mymensingh, Bangladesh and also from locality. For comparison age matched 50 male and 50 female apparently healthy persons were also studied as control. PEFR was estimated by Wright's Peak flow meter. For statistical analysis unpaired student's 't' test was used. Mean PEFR were significantly decreased in study group in comparison to control group and the result was statistically significant (p<0.001). From this study, it may be concluded that peak expiratory flow rate was decreased in asthmatic patient and there was a significant relation of decline lung function.
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Affiliation(s)
- S Nasreen
- Dr Shamima Nasreen, Assistant Professor, Department of Physiology, TMSS Medical College, Bogra, Bangladesh; E-mail:
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Arora R, Rahman R, Joe W, Bakhshi S, Dhawan D, Radhakrishnan V, Kalra M, Chinnaswamy G, Das A, Mudaliar S, Sangareddi S, Sharma S, Seth R, Singh A, De S, Scott J, Uppuluri R, Borker A, Sankaran H, Bagai P. Families Of Children Newly Diagnosed With Cancer Incur Significant Out-Of-Pocket Expenditure For Treatment – Report Of A Multi-Site Prospective Longitudinal Study From India (INPOG-ACC-16-01). Pediatric Hematology Oncology Journal 2018. [DOI: 10.1016/j.phoj.2018.11.038] [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: 11/29/2022] Open
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Nasreen S, Nessa A, Islam F, Khanam A, Sultana R, Alam K, Naznin R, Tajkia T, Rahman R, Hossain M, Sultana MA, Kamal ST. Interaction between Hypertension and Asthma in Adult. Mymensingh Med J 2018; 27:34-40. [PMID: 29459589] [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: 06/08/2023]
Abstract
Asthma has been defined as a chronic inflammatory disorder of the airways that is associated with recruitment of inflammatory cells and the clinical development of wheezing, shortness of breath, chest tightness, and cough. The prevalence of asthma increased steadily over the latter part of the last century, first in the developed and then in the developing world. Current estimates suggest that asthma affects 300 million people worldwide, with a predicted additional 100 million people affected by 2025. This cross sectional study was conducted from January 1999 to August 1999 on 5642 Bangladeshi people and another same study carried out from November 2009 to April 2010 on 8088 subjects. In 1999 the prevalence of asthma was 6.9% whereas in 2010 it is 6.96%. Both asthma and hypertension are spastic disorders of smooth muscle, there is the similarities between these two diseases may predispose the individuals with one disease to the other. This descriptive type of cross-sectional study was done to find the Interaction between hypertension and asthma in adult and carried out in the Department of Physiology, Mymensingh Medical College, Mymensingh, Bangladesh from July 2014 to January 2016. Fifty (50) male and fifty (50) female adult asthmatic patients aged 18-60 years were included in the study group. They are enrolled from the Department of Medicine, Mymensingh Medical College, Mymensingh and also from locality. For comparison age matched 50 male and 50 female apparently healthy persons were also studied as control. Blood pressure was estimated by auscultatory method by sphygmomanometer. For statistical analysis unpaired student's 't' test was used. Mean blood pressure were significantly increased in study group in comparison to control group and the result was statistically significant (p<0.001). The study findings showed a high prevalence of hypertension among asthmatic patients than non asthmatic healthy persons. From this study, it may be concluded that hypertension and asthma are closely connected.
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Affiliation(s)
- S Nasreen
- Dr Shamima Nasreen, Assistant Professor, Department of Physiology, TMSS Medical College, Bogra, Bangladesh; E-mail:
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Al-Emran M, Rahman R, Miah MI, Shahjahan M. Effects of stocking density on growth and production in monoculture of Thai sharpunti (Barbonymus gonionotus). Progress Agric 2017; 28:249-252. [DOI: 10.3329/pa.v28i3.34662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
An experiment was carried out to study the density dependent growth of Thai sharpunti (Barbonymusgonionotus) for two months period. Three stocking densities such as 50/decimal, 100/decimal and 150/decimal representing treatment one (T1), treatment two (T2) and treatment three (T3), respectively were tested in three replications. A commercial diet (25% crude protein) was supplied twice daily throughout the study period up to satiation level. The total production of sharpunti was found 14.67 ± 2.05, 27.06 ± 3.09 and 36.87 ± 2.16 kg/decimal in T1, T2 and T3, respectively and they were significantly different (p<0.05) from each other. A higher net benefit of BDT 1079.50 was obtained from T2 where the stocking density was 100/decimal. The present study indicated that the growth and production of Thai sharpunti was density dependent in monoculture systems.Progressive Agriculture 28 (3): 249-252, 2017
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Rahman R, Cortes A, Oh K, Flaherty K, Lawrence D, Sullivan R, Shih H. The Impact of Timing of Immunotherapy with Cranial Irradiation on Early Distant Brain Progression and Overall Survival in Patients with Melanoma Brain Metastases. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.833] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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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Khan MH, Islam MN, Aditya GP, Islam MZ, Bhuiyan AS, Saha B, Bhowmick K, Hassan M, Paul PK, Chowdhury S, Rahman R. Correlation of Troponin-I Level with Left Ventricular Ejection Fraction and In-hospital outcomes after First Attack of Non-ST Segment Elevation Myocardial Infarction. Mymensingh Med J 2017; 26:721-731. [PMID: 29208858] [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: 06/07/2023]
Abstract
Coronary heart disease (CHD) is the most common cause of heart disease and is the single most important cause of premature death in developed world. Recognizing a patient with ACS is important because the diagnosis triggers both triage and management. cTnI is 100% tissue-specific for the myocardium and it has been shown to be a very sensitive and specific marker for acute myocardial infarction (AMI). Ventricular function is the best predictor of death after an acute coronary syndrome. It serves as a marker of myocardial damage, provides information on systolic function as well as diagnosis and prognosis. The study aimed at investigating the impact of elevated Troponin-I level on LV ejection fraction and in-hospital outcomes in patients with first attack of Non ST-segment Elevation Myocardial Infarction (NSTEMI). This prospective analytical study was conducted in the Department of Cardiology in Mymensingh Medical College Hospital from December 2015 to November 2016. Total 130 first attack of NSTEMI patients were included considering inclusion and exclusion criteria. The sample population was divided into two groups: Group I - Patients with first attack of NSTEMI with good LV function (LVEF: ≥55%). Group II - Patients with first attack of NSTEMI with LV systolic dysfunction (LVEF: <55%). Then Troponin-I and LVEF levels were correlated using Pearson's correlation coefficient test. In this study mean Troponin-I of Group I and Group II were 5.53±7.43 and 16.46±15.79ng/ml respectively. It was statistically significant (p<0.05). Echocardiography showed that patients with high Troponin-I level had low ejection fraction (LVEF) and patients with low Troponin-I level had preserved ejection fraction (LVEF). Analysis showed that patients with severe left ventricular systolic dysfunction (LVEF <35%) had the highest level of Troponin-I with worse in-hospital outcomes and vice versa-the patients with the preserved systolic function (LVEF ≥55%) had the lowest levels of Troponin-I with better in-hospital outcomes. In our study, it also showed that the levels of Troponin-I had negative correlation with LV ejection fraction levels, with medium strength of association (r= -0.5394, p=0.001). The study enabled us to conclude that, the higher was the Troponin-I level, the lower was the LV ejection fraction level and thus worse in-hospital outcomes in first attack of NSTEMI patients.
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Affiliation(s)
- M H Khan
- Dr Mahmood Hasan Khan, MD (Thesis) Student, Department of Cardiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh
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Khan KN, Khan MH, Rahman R, Rashid MA, Haque SZ, Zakia Z. Primary Angioplasty for the Treatment of Acute ST Elevated Myocardial Infarction: Single Centre Experience. Mymensingh Med J 2017; 26:351-355. [PMID: 28588172] [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: 06/07/2023]
Abstract
Worldwide primary angioplasty is a recommended strategy of reperfusion in patient with acute myocardial infarction as because it ensures reperfusion of the infarct-related vessels more than 90% whereas, with thrombolytics it is only 60-70%. This retrospective observational study includes all patients treated with primary angioplasty at United Hospital from Between March 2007 to January 2011. Total 114 consecutive patients with acute myocardial infarction were treated with primary angioplasty included. Those presented beyond 12 hours of onset of chest pain, in cardiogenic shock, resuscitate and intubated before the procedure were excluded from the study. Majority (89%) of the patient were male, age was minimum 30 years and maximum 90 years, 41.5% were diabetics, 58.4% were hypertensive, 43.5% were dyslipidaemic, 17% were smoker, 29.3% with positive family history. Fifty seven percent patients presented with anterior MI , 42 % with inferior MI and 1% with lateral MI. Left anterior descending (LAD) is the most common vessel involved (57%), followed by Right coronary artery (RCA) 31%, Left circumflex artery (LCX) 8 %, Ramus 1.3% and Graft vessel 2.7%. Our door to balloon time was minimum 23 min, maximum 184 min. We used drug eluting stents for most of the patients, GP IIb- IIIa receptor blockers used in 50% cases and thrombus suction device were used when indicated. We faced complications like arrhythmias in 24%, hypotension in18%, no flow or slow flow in 45%, cardiac arrest in 3% and coronary perforation in 1%. Our overall survival was 97.9%. Primary angioplasty is an emerging area in context of our country. Many of the new centers start this novel strategy which helps to save many lives Primary angioplasty is feasible and safe method of reperfusion in patient with acute myocardial infarction in our center. With the help of our initial experience we can perform PAMI with confidence to those who can afford and who need most.
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Affiliation(s)
- K N Khan
- Dr Kaisar Nasrullah Khan, Department of Cardiology, United Hospital Limited (UHL), Gulshan, Dhaka, Banglaldesh
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Movafagh S, Raj D, Sanaei-Ardekani M, Bhatia D, Vo K, Mahmoudieh M, Rahman R, Kim EH, Harralson AF. Hypoxia Inducible Factor 1: A Urinary Biomarker of Kidney Disease. Clin Transl Sci 2017; 10:201-207. [PMID: 28181420 PMCID: PMC5421733 DOI: 10.1111/cts.12445] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 01/03/2017] [Indexed: 01/22/2023] Open
Abstract
Identifying noninvasive biomarkers of kidney disease is valuable for diagnostic and therapeutic purposes. Hypoxia inducible factor 1 (HIF-1) expression is known to be elevated in the kidneys in several renal disease pathologies. We hypothesized that the urinary HIF-1a mRNA level may be a suitable biomarker for expression of this protein in chronic kidney disease (CKD). We compared HIF-1a mRNA levels from urine pellets of CKD and healthy subjects. To ensure that urinary HIF-1a mRNA is of kidney origin, we examined colocalization of HIF-1a mRNA with two kidney specific markers in urine cells. We found that HIF-1a mRNA is readily quantifiable in urine pellets and its expression was significantly higher in CKD patients compared with healthy adults. We also showed that the urinary HIF-1a mRNA comes primarily from cells of renal origin. Our data suggest that urinary HIF-1a mRNA is a potential biomarker in CKD and can be noninvasively assessed in patients.
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Affiliation(s)
- S Movafagh
- Department of Pharmacogenomics, Bernard J. Dunn School of Pharmacy, Shenandoah University, Ashburn, Virginia, USA
| | - D Raj
- Department of Nephrology, George Washington University Division of Kidney Diseases and Hypertension, Washington, DC, USA
| | | | - D Bhatia
- Department of Pharmacogenomics, Bernard J. Dunn School of Pharmacy, Shenandoah University, Ashburn, Virginia, USA
| | - K Vo
- Bernard J. Dunn School of Pharmacy, Shenandoah University, Ashburn, Virginia, USA
| | - M Mahmoudieh
- Bernard J. Dunn School of Pharmacy, Shenandoah University, Ashburn, Virginia, USA
| | - R Rahman
- Kidney and Hypertension Specialists, Manassas, Virginia, USA
| | - E H Kim
- Kidney and Hypertension Specialists, Manassas, Virginia, USA
| | - A F Harralson
- Department of Pharmacogenomics, Bernard J. Dunn School of Pharmacy, Shenandoah University, Ashburn, Virginia, USA
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Rayjada P, Vaghela N, Rahman R, Bhatnagar M, Ranjan M, Chauhan N, Sircar A, Manocha L, Raole P. Er 2 O 3 coating by reactive magnetron sputtering: Effect of oxygen supply and erbium pre-layer deposition. Nuclear Materials and Energy 2016. [DOI: 10.1016/j.nme.2016.05.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wood J, Kim D, Alqahtani S, Smith S, Barrett D, Grundy R, Rahman R. P01.04 Adult and paediatric GBM cells show differential phenotypic responses to external lipoprotein deprivation. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.061] [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: 11/13/2022] Open
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Wood J, Kim D, Smith S, Lourdusamy A, Ward J, Barrett D, Grundy R, Rahman R. P08.18 LC-MS-based genome-wide profiling of glioblastoma multiforme reveals distinct metabolism within the invasive region. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.151] [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: 11/12/2022] Open
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Ayodele O, Ali I, Konenko A, Duggan L, O'Mara N, Rahman R, Ged Y, Calvert P, Horgan A, O'Connor M. Menopausal status on tumour biology in early breast cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw364.18] [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: 11/12/2022] Open
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Usman M, Bocquel J, Salfi J, Voisin B, Tankasala A, Rahman R, Simmons MY, Rogge S, Hollenberg LCL. Spatial metrology of dopants in silicon with exact lattice site precision. Nat Nanotechnol 2016; 11:763-768. [PMID: 27271965 DOI: 10.1038/nnano.2016.83] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 04/18/2016] [Indexed: 06/06/2023]
Abstract
Scaling of Si-based nanoelectronics has reached the regime where device function is affected not only by the presence of individual dopants, but also by their positions in the crystal. Determination of the precise dopant location is an unsolved problem in applications from channel doping in ultrascaled transistors to quantum information processing. Here, we establish a metrology combining low-temperature scanning tunnelling microscopy (STM) imaging and a comprehensive quantum treatment of the dopant-STM system to pinpoint the exact coordinates of the dopant in the Si crystal. The technique is underpinned by the observation that STM images contain atomic-sized features in ordered patterns that are highly sensitive to the STM tip orbital and the absolute dopant lattice site. The demonstrated ability to determine the locations of P and As dopants to 5 nm depths will provide critical information for the design and optimization of nanoscale devices for classical and quantum computing applications.
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Affiliation(s)
- M Usman
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of Melbourne, Parkville, 3010 Victoria, Australia
| | - J Bocquel
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of New South Wales, Sydney, 2052 New South Wales, Australia
| | - J Salfi
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of New South Wales, Sydney, 2052 New South Wales, Australia
| | - B Voisin
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of New South Wales, Sydney, 2052 New South Wales, Australia
| | - A Tankasala
- Electrical and Computer Engineering Department, Purdue University, West Lafayette, Indiana 47907, USA
| | - R Rahman
- Electrical and Computer Engineering Department, Purdue University, West Lafayette, Indiana 47907, USA
| | - M Y Simmons
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of New South Wales, Sydney, 2052 New South Wales, Australia
| | - S Rogge
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of New South Wales, Sydney, 2052 New South Wales, Australia
| | - L C L Hollenberg
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of Melbourne, Parkville, 3010 Victoria, Australia
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Salfi J, Mol JA, Rahman R, Klimeck G, Simmons MY, Hollenberg LCL, Rogge S. Quantum simulation of the Hubbard model with dopant atoms in silicon. Nat Commun 2016; 7:11342. [PMID: 27094205 PMCID: PMC4842981 DOI: 10.1038/ncomms11342] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 03/16/2016] [Indexed: 11/08/2022] Open
Abstract
In quantum simulation, many-body phenomena are probed in controllable quantum systems. Recently, simulation of Bose-Hubbard Hamiltonians using cold atoms revealed previously hidden local correlations. However, fermionic many-body Hubbard phenomena such as unconventional superconductivity and spin liquids are more difficult to simulate using cold atoms. To date the required single-site measurements and cooling remain problematic, while only ensemble measurements have been achieved. Here we simulate a two-site Hubbard Hamiltonian at low effective temperatures with single-site resolution using subsurface dopants in silicon. We measure quasi-particle tunnelling maps of spin-resolved states with atomic resolution, finding interference processes from which the entanglement entropy and Hubbard interactions are quantified. Entanglement, determined by spin and orbital degrees of freedom, increases with increasing valence bond length. We find separation-tunable Hubbard interaction strengths that are suitable for simulating strongly correlated phenomena in larger arrays of dopants, establishing dopants as a platform for quantum simulation of the Hubbard model.
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Affiliation(s)
- J. Salfi
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - J. A. Mol
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - R. Rahman
- Department of Electrical Engineering, Purdue University, West Lafayette, Indiana 47906, USA
| | - G. Klimeck
- Department of Electrical Engineering, Purdue University, West Lafayette, Indiana 47906, USA
| | - M. Y. Simmons
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - L. C. L. Hollenberg
- Centre for Quantum Computation and Communication Technology, School of Physics, University of Melbourne, Parkville, Victoria 3010, Australia
| | - S. Rogge
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of New South Wales, Sydney, New South Wales 2052, Australia
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Husain M, Tayyeba K, Husain M, Fatima B, Ansari S, Rahman R, Chaudhry I, Husain N. Depression and quality of life in hospitalised patients with congestive heart failure (CHF): A cross-sectional study from Karachi, Pakistan. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.1405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
IntroductionThere is strong association between depression and mortality rates among patients with CHF. Despite the massive burden of cardiac disease as well as that of depression in Pakistan, there is limited data regarding the prevalence of depression in patients suffering from CHF. The aim of this study was to assess prevalence of depression in patients with CHF and to compare the health related quality of life of depressed and non-depressed patients with CHF.MethodsA total of 1009 patients diagnosed with CHF were recruited from different public hospitals in Karachi, Pakistan. Depression was assessed at baseline using the Beck Depression Inventory (BDI) and health related quality of life was assessed using Euro Qol (EQ-5D).ResultsOf the 1009 participants recruited to the study, 66.4% (n = 670) met the threshold for depression using the BDI measure. Of the depressed patients, 66.7% (n = 447) were male. Preliminary results indicate that participants who were depressed at baseline had poorer health related quality of life on EQ-5D measures as compared to those who were non-depressed (mean EQ-5D descriptive score 10.45 in depressed patients vs 7.37 in non-depressed patients and mean EQ-5D visual scale score 35.09 in depressed patients vs 52.19 in non-depressed patients).ConclusionConsidering the high prevalence of depression and its serious negative impact on quality of life of patients suffering from chronic physical illness, it is important to design and test culturally adapted psychosocial interventions to reduce depression and improve quality of life for these patients.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Lim W, Amar-Singh H, Jeganathan N, Rahmat H, Mustafa N, Mohd Yusof FS, Rahman R, Itam S, Chan C, N-Julia M. Exploring immunisation refusal by parents in the Malaysian context. Cogent Medicine 2016. [DOI: 10.1080/2331205x.2016.1142410] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- W.Y. Lim
- Clinical Research Centre Perak, 4th floor, Ambulatory Care Centre, Raja Permaisuri Bainun Hospital, Jalan Hospital, 30990 Ipoh, Perak, Malaysia
| | - H.S.S. Amar-Singh
- Clinical Research Centre Perak, 4th floor, Ambulatory Care Centre, Raja Permaisuri Bainun Hospital, Jalan Hospital, 30990 Ipoh, Perak, Malaysia
- Paediatric Department, Raja Permaisuri Bainun Hospital, Jalan Raja Ashman Shah, 30450 Ipoh, Perak, Malaysia
| | - Netia Jeganathan
- Clinical Research Centre Perak, 4th floor, Ambulatory Care Centre, Raja Permaisuri Bainun Hospital, Jalan Hospital, 30990 Ipoh, Perak, Malaysia
| | - H. Rahmat
- Sultan Azlan Shah Allied Health Science College, Tanjong Rambutan, 31250 Ulu Kinta, Perak, Malaysia
| | - N.A. Mustafa
- Sultan Azlan Shah Allied Health Science College, Tanjong Rambutan, 31250 Ulu Kinta, Perak, Malaysia
| | - Fatimah-Sham Mohd Yusof
- Sultan Azlan Shah Allied Health Science College, Tanjong Rambutan, 31250 Ulu Kinta, Perak, Malaysia
| | - R. Rahman
- Sultan Azlan Shah Allied Health Science College, Tanjong Rambutan, 31250 Ulu Kinta, Perak, Malaysia
| | - S. Itam
- Sultan Azlan Shah Allied Health Science College, Tanjong Rambutan, 31250 Ulu Kinta, Perak, Malaysia
| | - C.H. Chan
- Sultan Azlan Shah Allied Health Science College, Tanjong Rambutan, 31250 Ulu Kinta, Perak, Malaysia
| | - M.S. N-Julia
- Sultan Azlan Shah Allied Health Science College, Tanjong Rambutan, 31250 Ulu Kinta, Perak, Malaysia
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Wood J, Ward J, Smith S, Kim D, Barrett D, Grundy R, Rahman R. PO48CHARACTERISING INTRATUMOUR HETEROGENEITY IN PAEDIATRIC GLIOBLASTOMA MULTIFORME USING A NOVEL ADVANCED MASS SPECTROMETRY TECHNIQUE. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov284.44] [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: 11/13/2022] Open
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Khan MH, Ashrafuzzaman SM, Taib AN, Alam MT, Khan SH, Goldstein SK, Rahman R. Ambras Syndrome: First Reported Case in Bangladesh and its Oral Rehabilitation. Mymensingh Med J 2015; 24:859-863. [PMID: 26620032] [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: 06/05/2023]
Abstract
People with rare hypertrichosis syndromes became crowd-drawing money-making phenomena in many 19th century sideshow acts. These individuals have been referred to as dog-men, hair-men, and werewolves. In 1993, Baumister et al. described congenital hypertrichosis lanuginose or Ambras syndrome: a distinct form of congenital hypertrichosis characterized by excessive hair growth over the body and face associated with facial and occasional dental anomalies. Much is not known about this syndrome since fewer than 50 cases have been documented worldwide. In this case report, a nine year old girl presented with excessive hair growth throughout her body that was denser along her midline. Furthermore, her face displayed the typical dysmorphic features characteristic of Ambras syndrome: a round tip nose, thickened nasal cartilage, antiverted nares, prominent philtrum with deep groove, and a trapezoid mouth. Oral examination revealed normal oral mucosa with completely missing and unerupted decidious and permanent teeth. Panoramic radiographs confirmed unerupted deciduous teeth. Previous case reports have mentioned the presence of occasional dental anomalies such as retarded first and second dentition and absence of some teeth. However, this is the first reported case of Ambras syndrome presenting with complete anodontia. Prior cytogenetic studies performed on persons with Ambras syndrome have implicated a balanced pericentric inversion of chromosome 8. However, it is likely that dental anomalies are likely a result of a different genetic rearrangement. Further studies are needed to explore the cause of this rare phenotype of Ambras syndrome with complete unerupted dentition.
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Affiliation(s)
- M H Khan
- Dr Mahfujul Haq Khan, Professor and Head, Department of Dentistry, Bangladesh Institute of Research & Rehabilitation in Diabetes, Endocrine & Metabolic Disorder (BIRDEM) and Ibrahim Medical College, Dhaka, Bangladesh
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Manna FN, Khanam NN, Chowdhury KA, Das SN, Kabir MA, Zubyra SJ, Rahman R, Akhter K. Study on Association of Maternal Serum Triglyceride with Pre-eclampsia. Mymensingh Med J 2015; 24:578-584. [PMID: 26329958] [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: 06/05/2023]
Abstract
Till now pre-eclampsia is a disease of multiple theories. This case control study was carried out in the department of Obstetrics and Gynaecology of Bangabandhu Sheikh Mujib Medical University Hospital and Dhaka Medical College Hospital, from January 2006 to December 2007 to determine the association of maternal serum triglyceride with pre-eclampsia. Ninety pregnant women were studied, among them 45 patients were pre-eclamptic and served as case and 45 normal healthy pregnant women served as control. Estimation of serum triglyceride levels of all study patients was done with the help of enzymatic method. The mean (± SD) systolic blood pressure was 152.4 ± 19.8 mmHg in study group and 112.0 ± 8.9 mmHg in control group (p<0.05). Similarly the mean (± SD) diastolic blood pressure was 103.1 ± 12.2 mmHg in case group and 75.5 ± 6.6 mmHg in control group (p<0.05). Serum triglyceride level was more than the normal reference value in pre-eclamptic group. The mean (± SD) serum triglyceride level was 242.9 ± 36.8 mg/dl in case group and 184.6 ± 12.5mg/dl in control group. Statistically the difference was significant (p<0.05). The level of serum triglyceride positively correlated with the rise of blood pressure and degree of albuminuria. Thus serum triglyceride level increase in pre-eclampsia and the level correlate with the severity of the disease.
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Affiliation(s)
- F N Manna
- Dr Fakhrun Nessa Manna, Consultant, Saphena Women's Dental College & General Hospital, Malibag, Dhaka, Bangladesh; E-mail:
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Abstract
The ability to control single dopants in solid-state devices has opened the way towards reliable quantum computation schemes. In this perspective it is essential to understand the impact of interfaces and electric fields, inherent to address coherent electronic manipulation, on the dopants atomic scale properties. This requires both fine energetic and spatial resolution of the energy spectrum and wave-function, respectively. Here we present an experiment fulfilling both conditions: we perform transport on single donors in silicon close to a vacuum interface using a scanning tunneling microscope (STM) in the single electron tunneling regime. The spatial degrees of freedom of the STM tip provide a versatility allowing a unique understanding of electrostatics. We obtain the absolute energy scale from the thermal broadening of the resonant peaks, allowing us to deduce the charging energies of the donors. Finally we use a rate equations model to derive the current in presence of an excited state, highlighting the benefits of the highly tunable vacuum tunnel rates which should be exploited in further experiments. This work provides a general framework to investigate dopant-based systems at the atomic scale.
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Affiliation(s)
- B Voisin
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of New South Wales, Sydney, NSW 2052, Australia
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