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Rani S, Das S, Siddiqui SA, Jain A, Rani D, Pahuja M, Chaudhary N, Afshan M, Ghosh R, Swadia D, Riyajuddin SK, Bera C, Ghosh K. Harnessing Environmental Sensitivity in SnSe-Based Metal-Semiconductor-Metal Devices: Unveiling Negative Photoconductivity for Enhanced Photodetector Performance and Humidity Sensing. ACS Appl Mater Interfaces 2024. [PMID: 38741334 DOI: 10.1021/acsami.4c02539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
The extreme sensitivity of 2D-layered materials to environmental adsorbates, which is typically seen as a challenge, is harnessed in this study to fine-tune the material properties. This work investigates the impact of environmental adsorbates on electrical properties by studying metal-semiconductor-metal (MSM) devices fabricated on CVD-synthesized SnSe flakes. The freshly prepared devices exhibit positive photoconductivity (PPC), whereas they gradually develop negative photoconductivity (NPC) after being exposed to an ambient environment for ∼1 day. While the photodetectors based on positive photoconductivity exhibit a responsivity and detectivity of 6.1 A/W and 5.06 × 108 Jones, the same for the negative photoconductivity-based photodetector reaches up to 36.3 A/W and 1.49 × 109 Jones, respectively. In addition, the noise-equivalent power of the NPC photodetector decreases by 300 times as compared to the PPC device, which implies a prominent detection capability of the NPC device against weak photo signals. To substantiate the hypothesis that negative photoconductivity stems from the photodesorption of water and oxygen molecules on the dangling bonds of SnSe flakes, the flakes are etched along the most active planes (010) with a focused laser beam in an inert environment, which enhances responsivity by 43%, supporting negative photoconductivity linked to photodesorption. Furthermore, the humidity-dependent dark current variation of the NPC photodetectors is used to design a humidity sensor for human respiration monitoring with faster response and recovery times of 0.72 and 0.68 s, respectively. These findings open up the possibility of tuning the photoelectrical response of layered materials in a facile manner to develop future sensors and optoelectronic multifunctional devices.
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Affiliation(s)
- Seema Rani
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
| | - Subhabrata Das
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
| | - Shumile Ahmed Siddiqui
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
| | - Ayushi Jain
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
| | - Daya Rani
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
| | - Mansi Pahuja
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
| | - Nikita Chaudhary
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
| | - Mohd Afshan
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
| | - Rishita Ghosh
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
| | - Devansh Swadia
- Indian Institute of Science Education and Research Mohali, Knowledge City-Sector 81, Mohali 140306, India
| | - S K Riyajuddin
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
| | - Chandan Bera
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
| | - Kaushik Ghosh
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Knowledge City-Sector 81, Mohali 140306, India
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Siddiqui SA, Das S, Rani S, Afshan M, Pahuja M, Jain A, Rani D, Chaudhary N, Jyoti, Ghosh R, Riyajuddin S, Bera C, Ghosh K. Phosphorus-Doped Nickel Oxide Micro-Supercapacitor: Unleashing the Power of Energy Storage for Miniaturized Electronic Devices. Small 2024; 20:e2306756. [PMID: 38126960 DOI: 10.1002/smll.202306756] [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: 08/07/2023] [Revised: 11/01/2023] [Indexed: 12/23/2023]
Abstract
For an uninterrupted self-powered network, the requirement of miniaturized energy storage device is of utmost importance. This study explores the potential utilization of phosphorus-doped nickel oxide (P-NiO) to design highly efficient durable micro-supercapacitors. The introduction of P as a dopant serves to enhance the electrical conductivity of bare NiO, leading to 11-fold augmentation in volumetric capacitance to 841.92 Fcm-3 followed by significant enhancement of energy and power density from 6.71 to 42.096 mWhcm-3 and 0.47 to 1.046 Wcm-3, respectively. Theoretical calculations used to determine the adsorption energy of OH- ions, revealing higher in case of bare NiO (1.52 eV) as compared to phosphorus-doped NiO (0.64 eV) leading to high electrochemical energy storage performance. The as-designed micro-supercapacitor (MSC) device demonstrates a facile integration with the photovoltaic system for renewable energy storage and smooth transfer to external loads for enlightening the blue LED for ≈1 min. The choice of P-NiO/Ni not only contributes to cost reduction but also ensures minimal lattice mismatch at the interface facilitating high durability up to 15 K cycles along with capacitive retention of ≈100% and coulombic efficiency of 93%. Thus, the heterostructure unveils the possibilities of exploring miniaturized energy storage devices for portable electronics.
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Affiliation(s)
- Shumile Ahmed Siddiqui
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Subhabrata Das
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Seema Rani
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Mohd Afshan
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Mansi Pahuja
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Ayushi Jain
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Daya Rani
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Nikita Chaudhary
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Jyoti
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Rishita Ghosh
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Sk Riyajuddin
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Chandan Bera
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Kaushik Ghosh
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
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Yedavalli V, Kihira S, Shahrouki P, Hamam O, Tavakkol E, McArthur M, Qiao J, Johanna F, Doshi A, Vagal A, Khatri P, Srinivasan A, Chaudhary N, Bahr-Hosseini M, Colby GP, Nour M, Jahan R, Duckwiler G, Arnold C, Saver JL, Mocco J, Liebeskind DS, Nael K. CTP-based estimated ischemic core: A comparative multicenter study between Olea and RAPID software. J Stroke Cerebrovasc Dis 2023; 32:107297. [PMID: 37738915 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107297] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 08/01/2023] [Accepted: 08/03/2023] [Indexed: 09/24/2023] Open
Abstract
BACKGROUND AND PURPOSE CTP is increasingly used to assess eligibility for endovascular therapy (EVT) in patients with large vessel occlusions (LVO). There remain variability and inconsistencies between software packages for estimation of ischemic core. We aimed to use heterogenous data from four stroke centers to perform a comparative analysis for CTP-estimated ischemic core between RAPID (iSchemaView) and Olea (Olea Medical). METHODS In this retrospective multicenter study, patients with anterior circulation LVO who underwent pretreatment CTP, successful EVT (defined TICI ≥ 2b), and follow-up MRI included. Automated CTP analysis was performed using Olea platform [rCBF < 25% and differential time-to-peak (dTTP)>5s] and RAPID (rCBF < 30%). The CTP estimated core volumes were compared against the final infarct volume (FIV) on post treatment MRI-DWI. RESULTS A total of 151 patients included. The CTP-estimated ischemic core volumes (mean ± SD) were 18.7 ± 18.9 mL on Olea and 10.5 ± 17.9 mL on RAPID significantly different (p < 0.01). The correlation between CTP estimated core and MRI final infarct volume was r = 0.38, p < 0.01 for RAPID and r = 0.39, p < 0.01 for Olea. Both software platforms demonstrated a strong correlation with each other (r = 0.864, p < 0.001). Both software overestimated the ischemic core volume above 70 mL in 4 patients (2.6%). CONCLUSIONS Substantial variation between Olea and RAPID CTP-estimated core volumes exists, though rates of overcalling of large core were low and identical. Both showed comparable core volume correlation to MRI infarct volume.
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Affiliation(s)
- V Yedavalli
- Johns Hopkins University School of Medicine, Baltimore, MD, United States.
| | - S Kihira
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - P Shahrouki
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - O Hamam
- Massachussetts General Hospital, Boston, MA, United States
| | - E Tavakkol
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - M McArthur
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - J Qiao
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - Fifi Johanna
- Mount Sinai School of Medicine, New York, NY, United States
| | - A Doshi
- Mount Sinai School of Medicine, New York, NY, United States
| | - A Vagal
- University of Cincinnati School of Medicine, Cincinnati, OH, United States
| | - P Khatri
- University of Cincinnati School of Medicine, Cincinnati, OH, United States
| | - A Srinivasan
- University of Michigan School of Medicine, Ann Arbor, MI, United States
| | - N Chaudhary
- University of Michigan School of Medicine, Ann Arbor, MI, United States
| | - M Bahr-Hosseini
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - G P Colby
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - M Nour
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - R Jahan
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - G Duckwiler
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - C Arnold
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - J L Saver
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - J Mocco
- Mount Sinai School of Medicine, New York, NY, United States
| | - D S Liebeskind
- David Geffen School of Medicine at the University of California - Los Angeles, United States
| | - K Nael
- David Geffen School of Medicine at the University of California - Los Angeles, United States
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Afshan M, Sachdeva PK, Rani D, Das S, Pahuja M, Siddiqui SA, Rani S, Ghosh R, Chaudhary N, Jyoti, Riyajuddin S, Bera C, Ghosh K. Porous Carbon Template Decorated with MOF-Driven Bimetallic Phosphide: A Suitable Heterostructure for the Production of Uninterrupted Green Hydrogen via Renewable Energy Storage Device. Small 2023:e2304399. [PMID: 37626463 DOI: 10.1002/smll.202304399] [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] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/25/2023] [Indexed: 08/27/2023]
Abstract
Water splitting via an uninterrupted electrochemical process through hybrid energy storage devices generating continuous hydrogen is cost-effective and green approach to address the looming energy and environmental crisis toward constant supply of hydrogen fuel in fuel cell driven automobile sector. The high surface area metal-organic framework (MOF) driven bimetallic phosphides (ZnP2 @CoP) on top of CNT-carbon cloth matrix is utilized as positive and negative electrodes in energy storage devices and overall water splitting. The as-prepared positive electrode exhibits excellent specific capacitances/capacity of 1600 F g-1 /800 C g-1 @ 1A g-1 and the corresponding hybrid device reveals an energy density of 83.03 Wh kg-1 at power density of 749.9 W kg-1 . Simultaneously, the electrocatalytic performance of heterostructure shows overpotentials of 90 mV@HER and 204 mV@OER at current density of 10 and 20 mA cm-2 , respectively in alkaline electrocatalyzer. Undoubtedly, it shows overall water splitting with low cell voltage of 1.53 V@10 mA cm-2 having faradic and solar-to-hydrogen conversion efficiency of 98.81% and 9.94%, respectively. In addition, the real phase demonstration of the overall water-splitting is performed where the electrocatalyzer is connected with a series of hybrid supercapacitor devices powered up by the 6 V standard silicon solar panel to produce uninterrupted green H2 .
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Affiliation(s)
- Mohd Afshan
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Parrydeep Kaur Sachdeva
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Daya Rani
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Subhabrata Das
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Mansi Pahuja
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Shumile Ahmed Siddiqui
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Seema Rani
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Rishita Ghosh
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Nikita Chaudhary
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Jyoti
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Sk Riyajuddin
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Chandan Bera
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Kaushik Ghosh
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, Mohali, Punjab, 140306, India
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Kumar A, Mishra G, De S, Yadav V, Chaudhary N, Yerge U, Mondal J, Thomas R. Measurements of continuous spectra of photons from 4/6 MeV dual energy e-LINAC. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2023.110930] [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: 03/31/2023]
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Singh S, Al-Imam A, Tirpude AP, Chaudhary N, Al-Alwany A, Konuri V. Past Myocardial Infarctions and Gender Predict the LVEF Regardless of the Status of Coronary Collaterals: An AI-Informed Research. Open Access Maced J Med Sci 2023. [DOI: 10.3889/oamjms.2023.10094] [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] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
BACKGROUND: The degree of the development of coronary collaterals is long considered an alternate – that is, a collateral – source of blood supply to an area of the myocardium threatened with vascular ischemia or insufficiency. Hence, the coronary collaterals are beneficial but can also promote harmful (adverse) effects. For instance, the coronary steal effect during the myocardial hyperemia phase and that of restenosis following coronary angioplasty.
OBJECTIVES: Our study explores the contribution of coronary collaterals – if any exist – while considering other potential predictors, including demographics and medical history, toward the left ventricular (LV) dysfunction measured through the LV ejection fraction (LVEF).
METHODS: Our cross-sectional design study used convenience sampling of 100 patients (n = 100; a male-to-female ratio of 4:1). We conducted frequentist inference statistics using IBM-SPSS version 24 and Microsoft Office Excel 2016 with the analysis ToolPak plugin; we ran parallel neural networks (supervised machine learning (ML)) and a two-step clustering (non-supervised ML) for robust conjoint inference with frequentist statistics.
RESULTS: The past incidents of myocardial infarction (p = 0.036) and gender (p = 0.072) influenced the LVEF; both are significant predictors at a 90% confidence interval. We found that gender and past incidents of MI influenced the LVEF regardless of the status of coronary collaterals. Our study did not yield any positive or significant findings concerning the status of coronary collaterals or the coronary circulation dominance patterns.
CONCLUSION: Regardless of the status of coronary collaterals, we verified that the female gender is protective of the LV function, contrary to the past infarction incidents that predispose to a deteriorated LV function. Our study’s innovation relates to its status as the first study from India to explore the coronary collaterals and the ejection fraction while incorporating frequentist statistics and narrow artificial intelligence to infer reliable results.
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Chaudhary N, Hirsch M, Andreeva T, Geiger J, Hoefel U, Rahbarnia K, Wurden GA, Wolf RC. Radial localization of electron temperature pedestal and ELM-like events using ECE measurements at Wendelstein 7-X. EPJ Web Conf 2023. [DOI: 10.1051/epjconf/202327703004] [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] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
A magnetic configuration scan was performed at Wendelstein 7-X stellarator by varying the rotational transform to analyze the plasma confinement for magnetic configurations with different edge magnetic island locations and sizes. For the magnetic configurations, where the 5/5 island chain was moved inside the last closed flux surface, it was observed with electron cyclotron emission measurements that an electron temperature, Te, pedestal develops in the plasma buildup phase and followed by the edge localized mode (ELM)-like crashes. From the mapping of the island to the plasma radius from HINT equilibrium, it was found that the Te pedestal is formed at the island location on the high field side of the plasma. The ELM-like crashes occur at the location of the pedestal and the transport barrier is broken typically with an energy loss of 3-4% during a single ELM-like event. The frequency and the amplitude of the ELM-like crashes were observed to be changing with island size, plasma heating power and density. Additionally during the plasma decay, after the heating was switched-off, a transition to degraded plasma confinement state was observed with changed Te profile gradients, faster decay rate of diamagnetic energy, and increased H-alpha levels.
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Mishra VK, Chaudhary N, Haldar C. Electronically Tuned Copper Porphyrins for the Selective Epoxidation of Alkenes. Top Catal 2022. [DOI: 10.1007/s11244-022-01764-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Georgiopoulos A, Smith B, Sher Y, Bruce A, He J, Kim J, Chaudhary N, Hardcastle M, Pollinger S, Polineni D, Mohabir P, Shea N, Roach C, Richards C, Miller C, Dvorak M, Quittner A, Friedman D. 312 Barriers to sustaining daily care in adults with cystic fibrosis with mild depression and anxiety. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)01002-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Georgiopoulos A, Smith B, Chaudhary N, Aliaj E, Birnbaum V, Hamilton T, Kirby K, Nowakowski A, Shiffman M, Tillman L, Quittner A. 315 Cystic fibrosis mental health research priorities: Qualitative content analysis of cystic fibrosis community and provider survey. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)01005-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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DiFiglia S, Georgiopoulos A, Portenoy R, Berdella M, Friedman D, Kier C, Linnemann R, Middour-Oxler B, Walker P, Wang J, Buehler B, Chaudhary N, Esposito C, Henthorne K, Hunter E, Plachta A, Pollinger S, Stables-Carney T, Trentacoste J, Dhingra L. 242 Palliative care needs in cystic fibrosis: Baseline data from the Improving Life with Cystic Fibrosis Multi-site Implementation Trial for Primary Palliative Care Intervention. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00932-8] [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: 11/05/2022]
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Kesharwani N, Chaudhary N, Haldar C. Synthesis and characterization of Merrifield resin and graphene oxide supported air stable oxidovanadium(IV) radical complexes for the catalytic oxidation of light aliphatic alcohols. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.06.005] [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: 11/02/2022]
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Middour-Oxler B, Dhingra L, Georgiopoulos A, DiFiglia S, Portenoy R, Chaudhary N, Linnemann R. P246 Improving assessment of palliative care needs among cystic fibrosis children: a Delphi study of the ADAPT-Cystic Fibrosis communication guide. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00575-6] [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: 10/18/2022]
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Liu Y, Gebrezgiabhier D, Zheng Y, Shih A, Chaudhary N, Pandey A, Larco J, Madhani S, Abbasi M, Shahid A, Quinton R, Kadirvel R, Brinjikji W, Kallmes D, Savastano L. Arterial Collapse during Thrombectomy for Stroke: Clinical Evidence and Experimental Findings in Human Brains and In Vivo Models. AJNR Am J Neuroradiol 2022; 43:251-257. [PMID: 35027348 PMCID: PMC8985669 DOI: 10.3174/ajnr.a7389] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 10/04/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND PURPOSE Aspiration thrombectomy has become a preferred approach to recanalize large-vessel occlusion in stroke with a growing trend toward using larger-bore catheters and stronger vacuum pumps. However, the mechanical response of the delicate cerebral arteries to aspiration force has not been evaluated. Here, we provide preclinical and clinical evidence of intracranial arterial collapse in aspiration thrombectomy. MATERIALS AND METHODS We presented a clinical case of arterial collapse with previously implanted flow diverters. We then evaluated the effect of vacuum with conventional aspiration catheters (with and without stent retrievers) in a rabbit model (n = 3) using fluoroscopy and intravascular optical coherence tomography. Then, in a validated human cadaveric brain model, we conducted 168 tests of direct aspiration thrombectomy following an experimental design modifying the catheter inner diameter (0.064 inch, 0.068 inch, and 0.070 inch), cerebral perfusion pressures (mean around 60 and 90 mm Hg), and anterior-versus-posterior circulation. Arterial wall response was recorded and graded via direct transluminal observation. RESULTS Arterial collapse was observed in both the patient and preclinical experimental models. In the human brain model, arterial collapse was observed in 98% of cases in the M2 and in all the cases with complete proximal flow arrest. A larger bore size of the aspiration catheter, a lower cerebral perfusion pressure, and the posterior circulation in comparison with the anterior circulation were associated with a higher probability of arterial collapse. CONCLUSIONS Arterial collapse does occur during aspiration thrombectomy and is more likely to happen with larger catheters, lower perfusion pressure, and smaller arteries.
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Affiliation(s)
- Y. Liu
- From the Departments of Radiology (Y.L., M.A., R.K., W.B., D.F.K.),Departments of Mechanical Engineering (Y.L., Y.Z., A.J.S.)
| | - D. Gebrezgiabhier
- Neurosurgery (D.G., A.S.P., L.E.S.),UCSF Graduate Program in Bioengineering (D.G.), University of California Berkeley, San Francisco, California
| | - Y. Zheng
- Departments of Mechanical Engineering (Y.L., Y.Z., A.J.S.),Department of Mechanical Engineering (Y.Z.), Worcester Polytechnic Institute, Worcester, Massachusetts
| | - A.J. Shih
- Departments of Mechanical Engineering (Y.L., Y.Z., A.J.S.)
| | - N. Chaudhary
- Radiology (N.C.), University of Michigan, Ann Arbor, Michigan
| | | | | | | | - M. Abbasi
- From the Departments of Radiology (Y.L., M.A., R.K., W.B., D.F.K.)
| | - A.H. Shahid
- Neurosurgery (J.L.A.L., S.I.M., A.H.S., L.E.S.)
| | - R.A. Quinton
- Division of Anatomic Pathology (R.A.Q.), Mayo Clinic, Rochester, Minnesota
| | - R. Kadirvel
- From the Departments of Radiology (Y.L., M.A., R.K., W.B., D.F.K.)
| | - W. Brinjikji
- From the Departments of Radiology (Y.L., M.A., R.K., W.B., D.F.K.)
| | - D.F. Kallmes
- From the Departments of Radiology (Y.L., M.A., R.K., W.B., D.F.K.)
| | - L.E. Savastano
- Neurosurgery (J.L.A.L., S.I.M., A.H.S., L.E.S.),Neurosurgery (D.G., A.S.P., L.E.S.)
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Kachhap P, Chaudhary N, Haldar C. Solvent‐free oxidation of straight‐chain aliphatic primary alcohols by polymer‐grafted vanadium complexes. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Payal Kachhap
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad India
| | - Nikita Chaudhary
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad India
| | - Chanchal Haldar
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad India
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16
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Friedman D, Smith B, Sher Y, Bruce A, Chaudhary N, Hardcastle M, Pollinger S, Polineni D, Mohabir P, Shea N, Roach C, Miller C, Richards C, Dvorak M, Quittner A, Georgiopoulos A. 302: Perceived stress and quality of life in adults with CF with mild depression and anxiety. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01727-6] [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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17
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Chikkabyrappa SM, Chaudhary N, Agarwal A, Rastogi D, Filipov P, Rastogi S. Outcomes among preterm infants with patent ductus arteriosus: Relationship with treatment, gestational age, hemodynamic status and timing of treatment. J Neonatal Perinatal Med 2021; 15:219-227. [PMID: 34719442 DOI: 10.3233/npm-210814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND There remains controversy regarding the outcomes resulting from treatment versus conservative management of patent ductus arteriosus (PDA) among preterm infants. The effects of extreme prematurity, hemodynamic status of the PDA, and age at treatment remain poorly defined. STUDY DESIGN This retrospective case-control study including infants < 1250 gm who were categorized into 3 groups: Group 1: without PDA, Group 2: with untreated PDA, and Group 3: treated PDA. Diagnosis and treatment of PDA extracted from the medical records. Demographics, clinical characteristics, and outcomes compared using chi-square and analysis of variance. Logistic regression used to estimate adjusted odds ratios. RESULTS The study included 734 infants, with 141(19%) in Group 1, 329 (45%) in 2, and 264 (36%) in 3. Group 3 had higher incidence of bronchopulmonary dysplasia (BPD) (aOR, 2.9; 95%CI 1.7-4.8). Infant treated for hemodynamically significant PDA (HSPDA) had higher incidence of BPD (aOR, 1.9; 95%CI 1.0-3.8) and retinopathy of prematurity (ROP) (aOR, 3.4; 95%CI 1.6-6.9). There were no differences in outcome associated with treatment among≤26 weeks gestation and the age when treated. CONCLUSION Infants with PDA who were treated had higher incidence of BPD. Among those who were treated, those with HSPDA had a higher incidence of BPD and ROP.
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Affiliation(s)
| | - N Chaudhary
- Beth Israel Deaconess Medical Center, Harvard University, Boston, MA
| | - A Agarwal
- The Children's Hospital of San Antonio, Baylor College of Medicine, San Antonio, TX
| | - D Rastogi
- Children's National Hospital, George Washington University, Washington, DC
| | - P Filipov
- Maimonides Medical Center, Brooklyn, NY
| | - S Rastogi
- Children's National Hospital, George Washington University, Washington, DC
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18
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Kesharwani N, Chaudhary N, Haldar C. Heterogeneous Catalytic Oxidative Bromination and Oxidation of Thioethers By Vanadium(IV) Oxido Complex of Benzoylacetone and Effect of Solid Supports. Catal Letters 2021. [DOI: 10.1007/s10562-021-03594-9] [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]
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19
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Daou BJ, Palmateer G, Wilkinson DA, Thompson BG, Maher CO, Chaudhary N, Gemmete JJ, Hayman JA, Lam K, Wahl DR, Kim M, Pandey AS. Radiation-Induced Imaging Changes and Cerebral Edema following Stereotactic Radiosurgery for Brain AVMs. AJNR Am J Neuroradiol 2020; 42:82-87. [PMID: 33214183 DOI: 10.3174/ajnr.a6880] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 08/17/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE T2 signal and FLAIR changes in patients undergoing stereotactic radiosurgery for brain AVMs may occur posttreatment and could result in adverse radiation effects. We aimed to evaluate outcomes in patients with these imaging changes, the frequency and degree of this response, and factors associated with it. MATERIALS AND METHODS Through this retrospective cohort study, consecutive patients treated with stereotactic radiosurgery for brain AVMs who had at least 1 year of follow-up MR imaging were identified. Logistic regression analysis was used to evaluate predictors of outcomes. RESULTS One-hundred-sixty AVMs were treated in 148 patients (mean, 35.6 years of age), including 42 (26.2%) pediatric AVMs. The mean MR imaging follow-up was 56.5 months. The median Spetzler-Martin grade was III. The mean maximal AVM diameter was 2.8 cm, and the mean AVM target volume was 7.4 mL. The median radiation dose was 16.5 Gy. New T2 signal and FLAIR hyperintensity were noted in 40% of AVMs. T2 FLAIR volumes at 3, 6, 12, 18, and 24 months were, respectively, 4.04, 55.47, 56.42, 48.06, and 29.38 mL Radiation-induced neurologic symptoms were encountered in 34.4%. In patients with radiation-induced imaging changes, 69.2% had new neurologic symptoms versus 9.5% of patients with no imaging changes (P = .0001). Imaging changes were significantly associated with new neurologic findings (P < .001). Larger AVM maximal diameter (P = .04) and the presence of multiple feeding arteries (P = .01) were associated with radiation-induced imaging changes. CONCLUSIONS Radiation-induced imaging changes are common following linear particle accelerator-based stereotactic radiosurgery for brain AVMs, appear to peak at 12 months, and are significantly associated with new neurologic findings.
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Affiliation(s)
- B J Daou
- Neurosurgery (B.J.D., G.P., D.A.W., B.G.T., C.O.M., N.C., J.J.G., A.S.P.)
| | - G Palmateer
- Neurosurgery (B.J.D., G.P., D.A.W., B.G.T., C.O.M., N.C., J.J.G., A.S.P.)
| | - D A Wilkinson
- Neurosurgery (B.J.D., G.P., D.A.W., B.G.T., C.O.M., N.C., J.J.G., A.S.P.)
| | - B G Thompson
- Neurosurgery (B.J.D., G.P., D.A.W., B.G.T., C.O.M., N.C., J.J.G., A.S.P.)
| | - C O Maher
- Neurosurgery (B.J.D., G.P., D.A.W., B.G.T., C.O.M., N.C., J.J.G., A.S.P.)
| | - N Chaudhary
- Neurosurgery (B.J.D., G.P., D.A.W., B.G.T., C.O.M., N.C., J.J.G., A.S.P.).,Radiology (N.C., J.J.G.)
| | - J J Gemmete
- Neurosurgery (B.J.D., G.P., D.A.W., B.G.T., C.O.M., N.C., J.J.G., A.S.P.).,Radiology (N.C., J.J.G.)
| | - J A Hayman
- From the Departments of Radiation Oncology (J.A.H., K.L., D.R.W., M.K.).,Radiation Oncology (J.A.H., K.L., D.R.W., M.K.), University of Michigan, Ann Arbor, Michigan
| | - K Lam
- From the Departments of Radiation Oncology (J.A.H., K.L., D.R.W., M.K.).,Radiation Oncology (J.A.H., K.L., D.R.W., M.K.), University of Michigan, Ann Arbor, Michigan
| | - D R Wahl
- From the Departments of Radiation Oncology (J.A.H., K.L., D.R.W., M.K.).,Radiation Oncology (J.A.H., K.L., D.R.W., M.K.), University of Michigan, Ann Arbor, Michigan
| | - M Kim
- From the Departments of Radiation Oncology (J.A.H., K.L., D.R.W., M.K.).,Radiation Oncology (J.A.H., K.L., D.R.W., M.K.), University of Michigan, Ann Arbor, Michigan
| | - A S Pandey
- Neurosurgery (B.J.D., G.P., D.A.W., B.G.T., C.O.M., N.C., J.J.G., A.S.P.)
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20
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Maurya A, Mahato AK, Chaudhary N, Kesharwani N, Kachhap P, Mishra VK, Haldar C. Synthesis and characterization of dimeric μ‐oxidovanadium complexes as the functional model of vanadium bromoperoxidase. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5508] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Abhishek Maurya
- Department of ChemistryIndian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India
| | - Arun Kumar Mahato
- Department of ChemistryIndian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India
| | - Nikita Chaudhary
- Department of Chemistry and Polymer ScienceStellenbosch University Matieland 7602 Stellenbosch South Africa
| | - Neha Kesharwani
- Department of ChemistryIndian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India
| | - Payal Kachhap
- Department of ChemistryIndian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India
| | - Vivek Kumar Mishra
- Department of ChemistryIndian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India
| | - Chanchal Haldar
- Department of ChemistryIndian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India
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21
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Linden‐Leibeszeit JBS, Eliseeva SV, Chaudhary N, Zeller M, Petoud S, Trivedi ER. Near‐Infrared Emitting Heterobimetallic Zn‐4f Schiff Base Complexes with Visible Excitation Wavelength. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201901042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | - Nikita Chaudhary
- Department of Chemistry Oakland University 48309 Rochester MI USA
| | - Matthias Zeller
- Department of Chemistry Purdue University 47907 West Lafayette IN USA
| | - Stéphane Petoud
- Centre de Biophysique Moléculaire CNRS UPR 4301 45071 Orléans Cedex 2 France
| | - Evan R. Trivedi
- Department of Chemistry Oakland University 48309 Rochester MI USA
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22
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Siddiqui AU, Gurudiwan R, Siddiqui AT, Chaudhary N, John MR, Gupta P. Morphometry of Glasscock’s Triangle Pertinent to the Exposure of Horizontal Intrapetrosal Segment of the Internal Carotid Artery. National Journal of Clinical Anatomy 2019. [DOI: 10.1055/s-0039-1697882] [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: 10/26/2022] Open
Abstract
Abstract
Background and Aim The specific anatomical triangles around the cavernous sinus are frequently explored areas in neurosurgeries and thus require a methodical approach keeping in mind the possibility of variational anatomy and morphometric differences. One of the most inconsistent triangles is the Glasscock’s (posterolateral) triangle (GT) in the middle cranial fossa.
Materials and Methods The present study was undertaken on 26 skull bases of the middle cranial fossa from cadavers and 42 dry adult skulls from the departmental collection to analyze parameters of the GT pertinent to the horizontal intrapetrosal segment of the internal carotid artery. The measurements of all sides of the GT were done and the mean surface area was calculated using Heron’s formula. The findings of the study were compared with earlier works where other methods of investigation were employed, such as, dry bones/computed tomography scans, cadaveric studies.
Observations The GT in the present study had a mean surface area of 43 mm2. The study presented with variable morphological and morphometric data as compared with earlier studies. The scientific attribute to the differences in parameters is presumably relevant to the racial differences as well as the pathophysiological condition of the subject.
Conclusions Surgical interventions to the base of the skull have evolved enormously over the years. Earlier studies have described the triangle on cadaveric specimen. We have attempted to revisit the area in cadaveric as well as dry skull base. Flawless information of the area under surgery augments safer procedures and reduction in the damage to brain tissue as well as the cranial nerves. The putative clinical implications of the present study are useful in helping in high precision surgeries and enhanced patient care. The highly variable GT needs to be understood properly for a desired culmination in ICA exposure in the intrapetrosal segment.
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Affiliation(s)
- Abu Ubaida Siddiqui
- Department of Anatomy, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Richa Gurudiwan
- Department of Anatomy, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Abu Talha Siddiqui
- Department of Cardiothoracic and Vascular Surgery, King Saud Medical City, Riyadh, Saudi Arabia
| | - Nikita Chaudhary
- Department of Anatomy, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Meryl Rachel John
- Department of Anatomy, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Paritosh Gupta
- Department of Anatomy, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
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Maurya A, Kesharwani N, Kachhap P, Mishra VK, Chaudhary N, Haldar C. Polymer‐anchored mononuclear and binuclear Cu
II
Schiff‐base complexes: Impact of heterogenization on liquid phase catalytic oxidation of a series of alkenes. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Abhishek Maurya
- Department of ChemistryIndian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India
| | - Neha Kesharwani
- Department of ChemistryIndian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India
| | - Payal Kachhap
- Department of ChemistryIndian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India
| | - Vivek Kumar Mishra
- Department of ChemistryIndian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India
| | - Nikita Chaudhary
- Department of Chemistry and Polymer ScienceStellenbosch University Matieland 7602 Stellenbosch South Africa
| | - Chanchal Haldar
- Department of ChemistryIndian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India
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24
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Downer M, Chaudhary N, Szafer-Glusman E, Breuleux M, Hsi E, Biondo J, Bazeos A, Jiang Y. REAL-WORLD PROGNOSTIC IMPACT OF BCL2 AND MYC EXPRESSION AND TRANSLOCATION AMONG DIFFUSE LARGE B-CELL LYMPHOMA PATIENTS TREATED WITH FIRST-LINE R-CHOP. Hematol Oncol 2019. [DOI: 10.1002/hon.14_2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- M.K. Downer
- Personalized Healthcare Data Science; Genentech Inc.; South San Francisco United States
| | - N. Chaudhary
- Personalized Healthcare Data Science; Genentech Inc.; South San Francisco United States
| | - E. Szafer-Glusman
- Oncology Biomarker Development; Genentech Inc.; South San Francisco United States
| | - M. Breuleux
- Global Product Development/Medical Affairs Oncology; F. Hoffmann-La Roche Ltd; Basel Switzerland
| | - E.D. Hsi
- Department of Laboratory Medicine; Cleveland Clinic; Cleveland United States
| | - J.M. Biondo
- US Medical Affairs; Genentech Inc.; South San Francisco United States
| | - A. Bazeos
- PD Clinical Science; Oncology, Roche Products Ltd; Welwyn Garden City United Kingdom
| | - Y. Jiang
- Oncology Biomarker Development; Genentech Inc.; South San Francisco United States
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Beeler W, Jackson W, Gharzai L, Jairath N, Nycz D, Broderick M, Kim M, Owen D, Gemmete J, Chaudhary N, Smith S, Park P, Archer P, Szerlip N, Spratt D, Younge K. Safety, Efficacy, and Setup Accuracy of Patients Undergoing Multi-Level Spine Stereotactic Radiosurgery. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.784] [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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Redondo MJ, Geyer S, Steck AK, Sharp S, Wentworth JM, Weedon MN, Antinozzi P, Sosenko J, Atkinson M, Pugliese A, Oram RA, Antinozzi P, Atkinson M, Battaglia M, Becker D, Bingley P, Bosi E, Buckner J, Colman P, Gottlieb P, Herold K, Insel R, Kay T, Knip M, Marks J, Moran A, Palmer J, Peakman M, Philipson L, Pugliese A, Raskin P, Rodriguez H, Roep B, Russell W, Schatz D, Wherrett D, Wilson D, Winter W, Ziegler A, Benoist C, Blum J, Chase P, Clare-Salzler M, Clynes R, Eisenbarth G, Fathman C, Grave G, Hering B, Kaufman F, Leschek E, Mahon J, Nanto-Salonen K, Nepom G, Orban T, Parkman R, Pescovitz M, Peyman J, Roncarolo M, Simell O, Sherwin R, Siegelman M, Steck A, Thomas J, Trucco M, Wagner J, Greenbaum ,CJ, Bourcier K, Insel R, Krischer JP, Leschek E, Rafkin L, Spain L, Cowie C, Foulkes M, Krause-Steinrauf H, Lachin JM, Malozowski S, Peyman J, Ridge J, Savage P, Skyler JS, Zafonte SJ, Kenyon NS, Santiago I, Sosenko JM, Bundy B, Abbondondolo M, Adams T, Amado D, Asif I, Boonstra M, Bundy B, Burroughs C, Cuthbertson D, Deemer M, Eberhard C, Fiske S, Ford J, Garmeson J, Guillette H, Browning G, Coughenour T, Sulk M, Tsalikan E, Tansey M, Cabbage J, Dixit N, Pasha S, King M, Adcock K, Geyer S, Atterberry H, Fox L, Englert K, Mauras N, Permuy J, Sikes K, Berhe T, Guendling B, McLennan L, Paganessi L, Hays B, Murphy C, Draznin M, Kamboj M, Sheppard S, Lewis V, Coates L, Moore W, Babar G, Bedard J, Brenson-Hughes D, Henderson C, Cernich J, Clements M, Duprau R, Goodman S, Hester L, Huerta-Saenz L, Karmazin A, Letjen T, Raman S, Morin D, Henry M, Bestermann W, Morawski E, White J, Brockmyer A, Bays R, Campbell S, Stapleton A, Stone N, Donoho A, Everett H, Heyman K, Hensley H, Johnson M, Marshall C, Skirvin N, Taylor P, Williams R, Ray L, Wolverton C, Nickels D, Dothard C, Hsiao B, Speiser P, Pellizzari M, Bokor L, Izuora K, Abdelnour S, Cummings P, Paynor S, Leahy M, Riedl M, Shockley S, Karges C, Saad R, Briones T, Casella S, Herz C, Walsh K, Greening J, Hay F, Hunt S, Sikotra N, Simons L, Keaton N, Karounos D, Oremus R, Dye L, Myers L, Ballard D, Miers W, Sparks R, Thraikill K, Edwards K, Fowlkes J, Kinderman A, Kemp S, Morales A, Holland L, Johnson L, Paul P, Ghatak A, Phelen K, Leyland H, Henderson T, Brenner D, Law P, Oppenheimer E, Mamkin I, Moniz C, Clarson C, Lovell M, Peters A, Ruelas V, Borut D, Burt D, Jordan M, Leinbach A, Castilla S, Flores P, Ruiz M, Hanson L, Green-Blair J, Sheridan R, Wintergerst K, Pierce G, Omoruyi A, Foster M, Linton C, Kingery S, Lunsford A, Cervantes I, Parker T, Price P, Urben J, Doughty I, Haydock H, Parker V, Bergman P, Liu S, Duncum S, Rodda C, Thomas A, Ferry R, McCommon D, Cockroft J, Perelman A, Calendo R, Barrera C, Arce-Nunez E, Lloyd J, Martinez Y, De la Portilla M, Cardenas I, Garrido L, Villar M, Lorini R, Calandra E, D’Annuzio G, Perri K, Minuto N, Malloy J, Rebora C, Callegari R, Ali O, Kramer J, Auble B, Cabrera S, Donohoue P, Fiallo-Scharer R, Hessner M, Wolfgram P, Maddox K, Kansra A, Bettin N, McCuller R, Miller A, Accacha S, Corrigan J, Fiore E, Levine R, Mahoney T, Polychronakos C, Martin J, Gagne V, Starkman H, Fox M, Chin D, Melchionne F, Silverman L, Marshall I, Cerracchio L, Cruz J, Viswanathan A, Miller J, Wilson J, Chalew S, Valley S, Layburn S, Lala A, Clesi P, Genet M, Uwaifo G, Charron A, Allerton T, Milliot E, Cefalu W, Melendez-Ramirez L, Richards R, Alleyn C, Gustafson E, Lizanna M, Wahlen J, Aleiwe S, Hansen M, Wahlen H, Moore M, Levy C, Bonaccorso A, Rapaport R, Tomer Y, Chia D, Goldis M, Iazzetti L, Klein M, Levister C, Waldman L, Muller S, Wallach E, Regelmann M, Antal Z, Aranda M, Reynholds C, Leech N, Wake D, Owens C, Burns M, Wotherspoon J, Nguyen T, Murray A, Short K, Curry G, Kelsey S, Lawson J, Porter J, Stevens S, Thomson E, Winship S, Wynn L, O’Donnell R, Wiltshire E, Krebs J, Cresswell P, Faherty H, Ross C, Vinik A, Barlow P, Bourcier M, Nevoret M, Couper J, Oduah V, Beresford S, Thalagne N, Roper H, Gibbons J, Hill J, Balleaut S, Brennan C, Ellis-Gage J, Fear L, Gray T, Pilger J, Jones L, McNerney C, Pointer L, Price N, Few K, Tomlinson D, Denvir L, Drew J, Randell T, Mansell P, Roberts A, Bell S, Butler S, Hooton Y, Navarra H, Roper A, Babington G, Crate L, Cripps H, Ledlie A, Moulds C, Sadler K, Norton R, Petrova B, Silkstone O, Smith C, Ghai K, Murray M, Viswanathan V, Henegan M, Kawadry O, Olson J, Stavros T, Patterson L, Ahmad T, Flores B, Domek D, Domek S, Copeland K, George M, Less J, Davis T, Short M, Tamura R, Dwarakanathan A, O’Donnell P, Boerner B, Larson L, Phillips M, Rendell M, Larson K, Smith C, Zebrowski K, Kuechenmeister L, Wood K, Thevarayapillai M, Daniels M, Speer H, Forghani N, Quintana R, Reh C, Bhangoo A, Desrosiers P, Ireland L, Misla T, Xu P, Torres C, Wells S, Villar J, Yu M, Berry D, Cook D, Soder J, Powell A, Ng M, Morrison M, Young K, Haslam Z, Lawson M, Bradley B, Courtney J, Richardson C, Watson C, Keely E, DeCurtis D, Vaccarcello-Cruz M, Torres Z, Alies P, Sandberg K, Hsiang H, Joy B, McCormick D, Powell A, Jones H, Bell J, Hargadon S, Hudson S, Kummer M, Badias F, Sauder S, Sutton E, Gensel K, Aguirre-Castaneda R, Benavides Lopez V, Hemp D, Allen S, Stear J, Davis E, Jones T, Baker A, Roberts A, Dart J, Paramalingam N, Levitt Katz L, Chaudhary N, Murphy K, Willi S, Schwartzman B, Kapadia C, Larson D, Bassi M, McClellan D, Shaibai G, Kelley L, Villa G, Kelley C, Diamond R, Kabbani M, Dajani T, Hoekstra F, Magorno M, Beam C, Holst J, Chauhan V, Wilson N, Bononi P, Sperl M, Millward A, Eaton M, Dean L, Olshan J, Renna H, Boulware D, Milliard C, Snyder D, Beaman S, Burch K, Chester J, Ahmann A, Wollam B, DeFrang D, Fitch R, Jahnke K, Bounmananh L, Hanavan K, Klopfenstein B, Nicol L, Bergstrom R, Noland T, Brodksy J, Bacon L, Quintos J, Topor L, Bialo S, Bream S, Bancroft B, Soto A, Lagarde W, Lockemer H, Vanderploeg T, Ibrahim M, Huie M, Sanchez V, Edelen R, Marchiando R, Freeman D, Palmer J, Repas T, Wasson M, Auker P, Culbertson J, Kieffer T, Voorhees D, Borgwardt T, DeRaad L, Eckert K, Gough J, Isaacson E, Kuhn H, Carroll A, Schubert M, Francis G, Hagan S, Le T, Penn M, Wickham E, Leyva C, Ginem J, Rivera K, Padilla J, Rodriguez I, Jospe N, Czyzyk J, Johnson B, Nadgir U, Marlen N, Prakasam G, Rieger C, Granger M, Glaser N, Heiser E, Harris B, Foster C, Slater H, Wheeler K, Donaldson D, Murray M, Hale D, Tragus R, Holloway M, Word D, Lynch J, Pankratz L, Rogers W, Newfield R, Holland S, Hashiguchi M, Gottschalk M, Philis-Tsimikas A, Rosal R, Kieffer M, Franklin S, Guardado S, Bohannon N, Garcia M, Aguinaldo T, Phan J, Barraza V, Cohen D, Pinsker J, Khan U, Lane P, Wiley J, Jovanovic L, Misra P, Wright M, Cohen D, Huang K, Skiles M, Maxcy S, Pihoker C, Cochrane K, Nallamshetty L, Fosse J, Kearns S, Klingsheim M, Wright N, Viles L, Smith H, Heller S, Cunningham M, Daniels A, Zeiden L, Parrimon Y, Field J, Walker R, Griffin K, Bartholow L, Erickson C, Howard J, Krabbenhoft B, Sandman C, Vanveldhuizen A, Wurlger J, Paulus K, Zimmerman A, Hanisch K, 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Espinoza O, Frank E, Liu J, Perry J, Pyle R, Rigby A, Riley K, Soto A, Gitelman S, Adi S, Anderson M, Berhel A, Breen K, Fraser K, Gerard-Gonzalez A, Jossan P, Lustig R, Moassesfar S, Mugg A, Ng D, Prahalod P, Rangel-Lugo M, Sanda S, Tarkoff J, Torok C, Wesch R, Aslan I, Buchanan J, Cordier J, Hamilton C, Hawkins L, Ho T, Jain A, Ko K, Lee T, Phelps S, Rosenthal S, Sahakitrungruang T, Stehl L, Taylor L, Wertz M, Wong J, Philipson L, Briars R, Devine N, Littlejohn E, Grant T, Gottlieb P, Klingensmith G, Steck A, Alkanani A, Bautista K, Bedoy R, Blau A, Burke B, Cory L, Dang M, Fitzgerald-Miller L, Fouts A, Gage V, Garg S, Gesauldo P, Gutin R, Hayes C, Hoffman M, Ketchum K, Logsden-Sackett N, Maahs D, Messer L, Meyers L, Michels A, Peacock S, Rewers M, Rodriguez P, Sepulbeda F, Sippl R, Steck A, Taki I, Tran BK, Tran T, Wadwa RP, Zeitler P, Barker J, Barry S, Birks L, Bomsburger L, Bookert T, Briggs L, Burdick P, Cabrera R, Chase P, Cobry E, Conley A, Cook G, Daniels J, DiDomenico D, 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Trunnel S, Transue D, Surhigh J, Bezzaire D, Moltz K, Zacharski E, Henske J, Desai S, Frizelis K, Khan F, Sjoberg R, Allen K, Manning P, Hendry G, Taylor B, Jones S, Couch R, Danchak R, Lieberman D, Strader W, Bencomo M, Bailey T, Bedolla L, Roldan C, Moudiotis C, Vaidya B, Anning C, Bunce S, Estcourt S, Folland E, Gordon E, Harrill C, Ireland J, Piper J, Scaife L, Sutton K, Wilkins S, Costelloe M, Palmer J, Casas L, Miller C, Burgard M, Erickson C, Hallanger-Johnson J, Clark P, Taylor W, Galgani J, Banerjee S, Banda C, McEowen D, Kinman R, Lafferty A, Gillett S, Nolan C, Pathak M, Sondrol L, Hjelle T, Hafner S, Kotrba J, Hendrickson R, Cemeroglu A, Symington T, Daniel M, Appiagyei-Dankah Y, Postellon D, Racine M, Kleis L, Barnes K, Godwin S, McCullough H, Shaheen K, Buck G, Noel L, Warren M, Weber S, Parker S, Gillespie I, Nelson B, Frost C, Amrhein J, Moreland E, Hayes A, Peggram J, Aisenberg J, Riordan M, Zasa J, Cummings E, Scott K, Pinto T, Mokashi A, McAssey K, Helden E, Hammond P, Dinning L, Rahman S, Ray S, Dimicri C, Guppy S, Nielsen H, Vogel C, Ariza C, Morales L, Chang Y, Gabbay R, Ambrocio L, Manley L, Nemery R, Charlton W, Smith P, Kerr L, Steindel-Kopp B, Alamaguer M, Tabisola-Nuesca E, Pendersen A, Larson N, Cooper-Olviver H, Chan D, Fitz-Patrick D, Carreira T, Park Y, Ruhaak R, Liljenquist D. A Type 1 Diabetes Genetic Risk Score Predicts Progression of Islet Autoimmunity and Development of Type 1 Diabetes in Individuals at Risk. Diabetes Care 2018; 41:1887-1894. [PMID: 30002199 PMCID: PMC6105323 DOI: 10.2337/dc18-0087] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 06/06/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE We tested the ability of a type 1 diabetes (T1D) genetic risk score (GRS) to predict progression of islet autoimmunity and T1D in at-risk individuals. RESEARCH DESIGN AND METHODS We studied the 1,244 TrialNet Pathway to Prevention study participants (T1D patients' relatives without diabetes and with one or more positive autoantibodies) who were genotyped with Illumina ImmunoChip (median [range] age at initial autoantibody determination 11.1 years [1.2-51.8], 48% male, 80.5% non-Hispanic white, median follow-up 5.4 years). Of 291 participants with a single positive autoantibody at screening, 157 converted to multiple autoantibody positivity and 55 developed diabetes. Of 953 participants with multiple positive autoantibodies at screening, 419 developed diabetes. We calculated the T1D GRS from 30 T1D-associated single nucleotide polymorphisms. We used multivariable Cox regression models, time-dependent receiver operating characteristic curves, and area under the curve (AUC) measures to evaluate prognostic utility of T1D GRS, age, sex, Diabetes Prevention Trial-Type 1 (DPT-1) Risk Score, positive autoantibody number or type, HLA DR3/DR4-DQ8 status, and race/ethnicity. We used recursive partitioning analyses to identify cut points in continuous variables. RESULTS Higher T1D GRS significantly increased the rate of progression to T1D adjusting for DPT-1 Risk Score, age, number of positive autoantibodies, sex, and ethnicity (hazard ratio [HR] 1.29 for a 0.05 increase, 95% CI 1.06-1.6; P = 0.011). Progression to T1D was best predicted by a combined model with GRS, number of positive autoantibodies, DPT-1 Risk Score, and age (7-year time-integrated AUC = 0.79, 5-year AUC = 0.73). Higher GRS was significantly associated with increased progression rate from single to multiple positive autoantibodies after adjusting for age, autoantibody type, ethnicity, and sex (HR 2.27 for GRS >0.295, 95% CI 1.47-3.51; P = 0.0002). CONCLUSIONS The T1D GRS independently predicts progression to T1D and improves prediction along T1D stages in autoantibody-positive relatives.
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Affiliation(s)
- Maria J. Redondo
- Texas Children’s Hospital, Baylor College of Medicine, Houston, TX
| | | | - Andrea K. Steck
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Seth Sharp
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | - John M. Wentworth
- Walter and Eliza Hall Institute of Medical Research and Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Michael N. Weedon
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | | | | | | | | | - Richard A. Oram
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
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Hitchcock W, Younge K, Gemmete J, Chaudhary N, Smith S, Archer P, Matuszak M, Park P, Szerlip N, Spratt D. Superiority of CT Myelography over MRI in Delineating the Spinal Cord during Spine Stereotactic Radiosurgery. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Richa N, Singh A, Chaudhary N, Thomas S. Fusion of vertebrae at various sites: An embryological and clinical relevance. J ANAT SOC INDIA 2017. [DOI: 10.1016/j.jasi.2017.08.081] [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: 10/18/2022]
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Yuhasz M, Morris E, Merola J, Chaudhary N, Sigal S, Gross J, Aaltonen E. The prognostic utility of MELD-Na for early mortality following TIPS. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.1175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Xiang CL, Gong YZ, Zeng LJ, Wang R, Kea S, Chaudhary N, Tu RH, He Y. Efficacy and safety of oral direct factor Xa inhibitors versus warfarin in patients with atrial fibrillation: a meta-analysis of randomized controlled trials. Acta Cardiol 2016; 71:349-57. [PMID: 27594130 DOI: 10.2143/ac.71.3.3152095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Kumar G, Chaudhary N. INDUCED CYTOMICTIC VARIATIONS AND SYNCYTE FORMATION DURING MICROSPOROGENESIS IN PHASEOLUS VULGARIS L. Tsitol Genet 2016; 50:50-57. [PMID: 27281925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The intercellular translocation of chromatin material along with other cytoplasmic contents among the proximate meiocytes lying in close contact with each other commonly referred as cytomixis was reported during microsporogenesis in Phaseolus vulgaris L., a member of the family Fabaceae. The phenomenon of cytomixis was observed at three administered doses of gamma rays viz. 100, 200, 300 Gy respectively in the diploid plants of Phaseolus vulgaris L. The gamma rays irradiated plants showed the characteristic feature of inter-meiocyte chromatin/chromosomes transmigration through various means.such as channel formation, beak formation or by direct adhesion between the PMC's (Pollen mother cells). The present study also reports the first instance of syncyte formation induced via cytomictic transmigration in Phaseolus vulgaris L. Though the frequency of syncyteformation was rather low yet these could play a significant role in plant evolution. It is speculated that syncyte enhances the ploidy level of plants by forming 2n gametes and may lead to the production ofpolyploid plants. The phenomenon of cytomixis shows a gradual inclination along with the increasing treatment doses of gamma rays. The preponderance of cytomixis was more frequent during meiosis I as compared to meiosis II. An interesting feature noticed during the present study was the channel formation among the microspores and fusion among the tetrads due to cell wall dissolution. The impact of this phenomenon is also visible on the development of post-meiotic products. The formation of heterosized pollen grains; a deviation from the normal pollen grains has also been reported. The production of gametes with unbalanced chromosomes is of utmost importance and should be given more attention in future studies as they possess the capability of inducing variations at the genomic level and can be further utilized in the improvement of germplasm.
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Maurya MR, Kumar N, Chaudhary N. A polymer grafted oxidomethoxidovanadium(V) complex of an ONO donor ligand mimicking peroxidase activity. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.05.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Maurya MR, Uprety B, Chaudhary N, Avecilla F. Synthesis and characterization of di-μ-oxidovanadium(V), oxidoperoxido-vanadium(V) and polymer supported dioxidovanadium(V) complexes and catalytic oxidation of isoeugenol. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.05.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Mahato SK, Chaudhary N, Lama S, Agarwal KN, Bhatia BD. Relationship of Oxygen Saturation with Neonatal and Maternal factors in Vaginal and Cesarean Deliveries. JNMA J Nepal Med Assoc 2015; 53:184-187. [PMID: 27549502] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023] Open
Abstract
INTRODUCTION Hypoxemia is the major cause of neonatal morbidity and mortality. The study aims to determine the influence of birth weight, Apgar score, gestation age, body mass index and hemoglobin of mother on levels of SpO2 in healthy newborns born vaginally and through cesarean section. METHODS A hospital Based, observational study conducted in Department of Pediatrics, Universal College of Medical Sciences-Teaching Hospital, Bhairahawa, Lumbini, Nepal; on 49 vaginal and 49 cesarean deliveries with Apgar Score ≥ 6. SpO2 was estimated by pulse oximeter post-ductally between 1 to 30 minutes of birth. The observed SpO2 values were correlated with neonatal and maternal factors. RESULTS Vaginal and Cesarean deliveries SpO2 were comparable for birth weight, gestational age, Apgar score of neonates, body mass index and hemoglobin of the mother. Birth weight in vaginally delivered babies and Apgar score in cesarean births showed significant change in SpO2 (P<0.05). At all points of time the SpO2 values were higher in neonates, born by cesarean than those born out of spontaneous vaginal deliveries (P<0.001). CONCLUSIONS SpO2 levels in neonates born through cesarean section were higher in comparison to thoseborn by vaginal route. Birth weight and Apgar score had correlation with SpO2 in vaginal and cesarean births, respectively.
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Affiliation(s)
- S K Mahato
- Department of Pediatrics, Universal College of Medical Sciences-Teaching Hospital, Bhairahawa, Nepal
| | - N Chaudhary
- Department of Pediatrics, Universal College of Medical Sciences-Teaching Hospital, Bhairahawa, Nepal
| | - S Lama
- Department of Pediatrics, Universal College of Medical Sciences-Teaching Hospital, Bhairahawa, Nepal
| | - K N Agarwal
- Department of Pediatrics, Universal College of Medical Sciences-Teaching Hospital, Bhairahawa, Nepal
| | - B D Bhatia
- Department of Pediatrics, Universal College of Medical Sciences-Teaching Hospital, Bhairahawa, Nepal
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Shastri R, Pandey A, Wilson T, Stetler W, Giles D, Davis M, Chaudhary N, Gemmete J, Thompson B. E-047 hemorrhagic complications in patients with dual antiplatelet therapies. J Neurointerv Surg 2015. [DOI: 10.1136/neurintsurg-2015-011917.122] [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: 11/04/2022]
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Shastri R, Chaudhary N, Pandey A, Roark C, Thompson B, Gemmete J. E-048 moya moya syndrome: evaluation and treatment in patients with inflammatory conditions causing a puff of smoke. J Neurointerv Surg 2015. [DOI: 10.1136/neurintsurg-2015-011917.123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Griauzde J, Gemmete J, Pandey A, Chaudhary N. P-032 clinical presentation and outcomes of non-cavernous dural arteriovenous fistulas undergoing endovascular therapy as primary treatment modality. J Neurointerv Surg 2015. [DOI: 10.1136/neurintsurg-2015-011917.71] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Roark C, Savastano L, Wilkinson D, Shastri R, Vadlamudi V, Chaudhary N, Pandey A, Gemmete J. E-088 successful mechanical thrombectomy for basilar artery stroke in a 22-month old child. J Neurointerv Surg 2015. [DOI: 10.1136/neurintsurg-2015-011917.163] [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: 11/04/2022]
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Dyble M, Salali GD, Chaudhary N, Page A, Smith D, Thompson J, Vinicius L, Mace R, Migliano AB. Human behavior. Sex equality can explain the unique social structure of hunter-gatherer bands. Science 2015; 348:796-8. [PMID: 25977551 DOI: 10.1126/science.aaa5139] [Citation(s) in RCA: 168] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The social organization of mobile hunter-gatherers has several derived features, including low within-camp relatedness and fluid meta-groups. Although these features have been proposed to have provided the selective context for the evolution of human hypercooperation and cumulative culture, how such a distinctive social system may have emerged remains unclear. We present an agent-based model suggesting that, even if all individuals in a community seek to live with as many kin as possible, within-camp relatedness is reduced if men and women have equal influence in selecting camp members. Our model closely approximates observed patterns of co-residence among Agta and Mbendjele BaYaka hunter-gatherers. Our results suggest that pair-bonding and increased sex egalitarianism in human evolutionary history may have had a transformative effect on human social organization.
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Affiliation(s)
- M Dyble
- University College London (UCL) Anthropology, 14 Taviton Street, London WC1H 0BW, UK.
| | - G D Salali
- University College London (UCL) Anthropology, 14 Taviton Street, London WC1H 0BW, UK
| | - N Chaudhary
- University College London (UCL) Anthropology, 14 Taviton Street, London WC1H 0BW, UK
| | - A Page
- University College London (UCL) Anthropology, 14 Taviton Street, London WC1H 0BW, UK
| | - D Smith
- University College London (UCL) Anthropology, 14 Taviton Street, London WC1H 0BW, UK
| | - J Thompson
- University College London (UCL) Anthropology, 14 Taviton Street, London WC1H 0BW, UK
| | - L Vinicius
- University College London (UCL) Anthropology, 14 Taviton Street, London WC1H 0BW, UK
| | - R Mace
- University College London (UCL) Anthropology, 14 Taviton Street, London WC1H 0BW, UK
| | - A B Migliano
- University College London (UCL) Anthropology, 14 Taviton Street, London WC1H 0BW, UK
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Kumar R, Chaudhary N, Sankar M, Maurya MR. Electron deficient nonplanar β-octachlorovanadylporphyrin as a highly efficient and selective epoxidation catalyst for olefins. Dalton Trans 2015; 44:17720-9. [DOI: 10.1039/c5dt02349a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Highly electron deficient and nonplanar β-octachlorovanadylporphyrin (VOTPPCl8) was synthesized and utilized for selective epoxidation of olefins with very high TOF numbers (6566-9650 h−1).
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Nikita Chaudhary
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Muniappan Sankar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Mannar R. Maurya
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
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Maurya MR, Chaudhary N, Avecilla F, Adão P, Costa Pessoa J. Oxidovanadium(iv) and dioxidovanadium(v) complexes of hydrazones of 2-benzoylpyridine and their catalytic applications. Dalton Trans 2015; 44:1211-32. [DOI: 10.1039/c4dt02474e] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
VV-polymer-supported compounds, their neat analogues and the corresponding peroxido-complexes are prepared and applied as catalyst precursors for the oxidation of isoeugenol.
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Affiliation(s)
- Mannar R. Maurya
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Nikita Chaudhary
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Fernando Avecilla
- Departamento de Química Fundamental
- Universidade da Coruña
- 15071 A Coruña
- Spain
| | - Pedro Adão
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisboa 1049-001
- Portugal
| | - João Costa Pessoa
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisboa 1049-001
- Portugal
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Chaudhary N, Bhatia BD, Mahato SK, Agrawal KK. Multiple Choice Questions-Part II (Classification, Item Preparation, Analysis and Banking). ACTA ACUST UNITED AC 2014. [DOI: 10.3126/jucms.v2i3.11830] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
No Abstract Available DOI: http://dx.doi.org/10.3126/jucms.v2i3.11830 Journal of Universal College of Medical Sciences Vol.2(3) 2014: 54-59
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Chaudhary N, Nakka KK, Chavali PL, Bhat J, Chatterjee S, Chattopadhyay S. SMAR1 coordinates HDAC6-induced deacetylation of Ku70 and dictates cell fate upon irradiation. Cell Death Dis 2014; 5:e1447. [PMID: 25299772 PMCID: PMC4237237 DOI: 10.1038/cddis.2014.397] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [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: 05/21/2014] [Revised: 08/11/2014] [Accepted: 08/14/2014] [Indexed: 11/30/2022]
Abstract
Acetylation status of DNA end joining protein Ku70 dictates its function in DNA repair and Bax-mediated apoptosis. Despite the knowledge of HDACs and HATs that are reported to modulate the acetylation dynamics of Ku70, very little is known about proteins that critically coordinate these key modifications. Here, we demonstrate that nuclear matrix-associated protein scaffold/matrix-associated region-binding protein 1 (SMAR1) is a novel interacting partner of Ku70 and coordinates with HDAC6 to maintain Ku70 in a deacetylated state. Our studies revealed that knockdown of SMAR1 results in enhanced acetylation of Ku70, which leads to impaired recruitment of Ku70 in the chromatin fractions. Interestingly, ionizing radiation (IR) induces the expression of SMAR1 and its redistribution as distinct nuclear foci upon ATM-mediated phosphorylation at serine 370. Furthermore, SMAR1 regulates IR-induced G2/M cell cycle arrest by facilitating Chk2 phosphorylation. Alternatively, SMAR1 provides radioresistance by modulating the association of deacetylated Ku70 with Bax, abrogating the mitochondrial translocation of Bax. Thus, we provide mechanistic insights of SMAR1-mediated regulation of repair and apoptosis via a complex crosstalk involving Ku70, HDAC6 and Bax.
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Affiliation(s)
- N Chaudhary
- Chromatin and Disease Biology Laboratory, National Centre for Cell Science, Pune University Campus, Pune, India
| | - K K Nakka
- Chromatin and Disease Biology Laboratory, National Centre for Cell Science, Pune University Campus, Pune, India
| | - P L Chavali
- Chromatin and Disease Biology Laboratory, National Centre for Cell Science, Pune University Campus, Pune, India
| | - J Bhat
- Department of Biophysics, Bose Institute, Kolkata, India
| | - S Chatterjee
- Department of Biophysics, Bose Institute, Kolkata, India
| | - S Chattopadhyay
- Chromatin and Disease Biology Laboratory, National Centre for Cell Science, Pune University Campus, Pune, India
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Maurya MR, Chaudhary N, Kumar A, Avecilla F, Costa Pessoa J. Polystyrene bound dioxidovanadium(V) complexes of 2-acetylpyridine derived ligands for catalytic oxidations. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.11.021] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Griauzde J, Gemmete JJ, Chaudhary N, Wilson TJ, Pandey AS. Large-volume blood patch to multiple sites in the epidural space through a single-catheter access site for treatment of spontaneous intracranial hypotension. AJNR Am J Neuroradiol 2014; 35:1841-6. [PMID: 24788127 DOI: 10.3174/ajnr.a3945] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Spontaneous intracranial hypotension can be a therapeutic challenge to the treating physician. In this study, we present our experience with the administration of a large-volume blood patch to multiple sites in the epidural space through a single-catheter access site. MATERIALS AND METHODS A retrospective review was conducted of patients with spontaneous intracranial hypotension who underwent a large-volume blood patch to multiple sites in the epidural space through a single-catheter access site from 2010 to 2012. Patient demographic data, clinical charts, indications for treatment, radiographic images, procedure notes, and postprocedure hospital course were reviewed. RESULTS Overall, 9 patients were identified who underwent 20 blood patch procedures. Patients were selected to undergo the large-volume procedure either because they had a failed site-directed epidural blood patch or if imaging demonstrated multiple possible leak sites. There were 6 women and 3 men, with an average age of 33.5 years. The mean volume of blood injected per procedure was 54.1 mL (median=55 mL; range=38-70 mL). All patients had an orthostatic headache as one of their presenting symptoms; 22% also presented with neurocognitive decline and behavioral changes; 89% of patients had improvement or resolution of their symptoms; and 80% of patients who had a previously failed site-directed epidural blood or fibrin glue patch improved with a large volume catheter-directed blood patch. CONCLUSIONS Our experience supports the use of a large-volume blood patch to multiple sites in the epidural space through a single-catheter access site for the treatment of spontaneous intracranial hypotension. Additionally, our results indicate a role for this procedure in refractory cases of spontaneous intracranial hypotension.
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Affiliation(s)
- J Griauzde
- From the Departments of Radiology (J.G., J.J.G., N.C.)
| | - J J Gemmete
- From the Departments of Radiology (J.G., J.J.G., N.C.) Neurosurgery (J.J.G., N.C., T.J.W., A.S.P.) Otolaryngology (J.J.G.), University of Michigan Hospitals, Ann Arbor, Michigan.
| | - N Chaudhary
- From the Departments of Radiology (J.G., J.J.G., N.C.) Neurosurgery (J.J.G., N.C., T.J.W., A.S.P.)
| | - T J Wilson
- Neurosurgery (J.J.G., N.C., T.J.W., A.S.P.)
| | - A S Pandey
- Neurosurgery (J.J.G., N.C., T.J.W., A.S.P.)
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Abstract
Lymphoblastic lymphoma (LL) of the B cell type is uncommon, and extranodal presentation is even rarer. It is difficult to suspect this diagnosis without clinically obvious lymph nodal mass or bone marrow involvement. A 3-year-old girl presented with progressive pain and swelling of the right knee joint of 3 months duration. Radiograph revealed expansile lytic lesion at the supracondylar area of the right femur; with pathological fracture and multiple lytic areas in both femora. She neither had lymphadenopathy nor organomegaly. Her blood counts, peripheral smear examination and bone marrow examination were normal. Right supracondylar biopsy revealed diagnosis of a precursor B cell LL. Computerized tomography scan revealed a hypodense, poorly enhancing lesion in the left adnexal region. Although rare, precursor B-cell LL may present with extensive bone lesions. Early and accurate diagnosis of this entity is very important due to its high cure rates.
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Affiliation(s)
- N Chaudhary
- Department of Child Health, Christian Medical College, Vellore, India
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Honarmand A, Gemmete J, Soltanolkotabi M, Hurley M, Chaudhary N, Pandey A, Shaibani A, Ansari S. P-025 Qualitative Assessment of Intra-Arterial Cone Beam CT Angiography in Precise Anatomic Localisation and Treatment Planning of Intracranial and Spinal Arteriovenous Fistulas. J Neurointerv Surg 2013. [DOI: 10.1136/neurintsurg-2013-010870.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Labby ZE, Roberts DA, Chaudhary N, Gemmete JJ, Pandey AS. SU-E-T-415: Dosimetric Measurements of An N-Butyl Cyanoacrylate Embolization Material for Arteriovenous Malformations. Med Phys 2013. [DOI: 10.1118/1.4814849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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50
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Gemmete JJ, Chaudhary N, Elias AE, Toma AK, Pandey AS, Parker RA, Davagnanam I, Maher CO, Brew S, Robertson F. Spinal dural arteriovenous fistulas: clinical experience with endovascular treatment as a primary therapy at 2 academic referral centers. AJNR Am J Neuroradiol 2013; 34:1974-9. [PMID: 23620076 DOI: 10.3174/ajnr.a3522] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Spinal dural arteriovenous fistulas are a rare entity that, if left untreated, can lead to considerable morbidity with progressive spinal cord symptoms. The aim of this study was to evaluate the clinical outcome of patients with spinal dural arteriovenous fistulas that were primarily treated with endovascular embolization. MATERIALS AND METHODS A retrospective review was performed of all patients from 1997-2010 who underwent treatment at 2 academic referral centers for a spinal dural arteriovenous fistula. Follow-up was performed by clinical examination, and functional status was measured by use of the Aminoff-Logue Disability Scale, McCormick classification grading, and mRS scores. The nonparametric Wilcoxon signed rank test was used to compare pretreatment and posttreatment Aminoff-Logue Disability Scale gait and micturition scores, McCormick classification grading, and mRS scores. P values < .05 were considered significant. RESULTS A total of 38 patients were included. Five patients (2 endovascular, 3 surgical) were lost to follow-up and therefore were excluded from the analysis, 29 patients were initially treated from an endovascular approach (9 Onyx, 20 cyanoacrylate), and 4 patients were treated from a standard surgical approach. Five patients in the endovascular group subsequently underwent surgery for various reasons. The clinical improvements in the Aminoff-Logue Disability Scale gait and micturition scores, McCormick classification grading, and the mRS scores were statistically significant (P < .05, Wilcoxon signed rank test). CONCLUSIONS We conclude that endovascular treatment of spinal dural arteriovenous fistulas can result in good clinical outcomes. Surgery remains the treatment of choice when safe embolization of the proximal radicular draining vein cannot be obtained or because the shunting artery of the spinal dural arteriovenous fistula also supplies the anterior spinal, posterior spinal, or a radiculomedullary artery.
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